Mercurial > vim
view src/mbyte.c @ 20566:37ba6d4a9455
Added tag v8.2.0836 for changeset 5788b78a1af0e2e57108c66a1ef595ecc9a63c09
| author | Bram Moolenaar <Bram@vim.org> |
|---|---|
| date | Thu, 28 May 2020 21:45:04 +0200 |
| parents | 22f0dda71638 |
| children | 6c5b11458f31 |
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/* vi:set ts=8 sts=4 sw=4 noet: * * VIM - Vi IMproved by Bram Moolenaar * Multibyte extensions partly by Sung-Hoon Baek * * Do ":help uganda" in Vim to read copying and usage conditions. * Do ":help credits" in Vim to see a list of people who contributed. * See README.txt for an overview of the Vim source code. */ /* * mbyte.c: Code specifically for handling multi-byte characters. * * The encoding used in the core is set with 'encoding'. When 'encoding' is * changed, the following four variables are set (for speed). * Currently these types of character encodings are supported: * * "enc_dbcs" When non-zero it tells the type of double byte character * encoding (Chinese, Korean, Japanese, etc.). * The cell width on the display is equal to the number of * bytes. (exception: DBCS_JPNU with first byte 0x8e) * Recognizing the first or second byte is difficult, it * requires checking a byte sequence from the start. * "enc_utf8" When TRUE use Unicode characters in UTF-8 encoding. * The cell width on the display needs to be determined from * the character value. * Recognizing bytes is easy: 0xxx.xxxx is a single-byte * char, 10xx.xxxx is a trailing byte, 11xx.xxxx is a leading * byte of a multi-byte character. * To make things complicated, up to six composing characters * are allowed. These are drawn on top of the first char. * For most editing the sequence of bytes with composing * characters included is considered to be one character. * "enc_unicode" When 2 use 16-bit Unicode characters (or UTF-16). * When 4 use 32-but Unicode characters. * Internally characters are stored in UTF-8 encoding to * avoid NUL bytes. Conversion happens when doing I/O. * "enc_utf8" will also be TRUE. * * "has_mbyte" is set when "enc_dbcs" or "enc_utf8" is non-zero. * * If none of these is TRUE, 8-bit bytes are used for a character. The * encoding isn't currently specified (TODO). * * 'encoding' specifies the encoding used in the core. This is in registers, * text manipulation, buffers, etc. Conversion has to be done when characters * in another encoding are received or send: * * clipboard * ^ * | (2) * V * +---------------+ * (1) | | (3) * keyboard ----->| core |-----> display * | | * +---------------+ * ^ * | (4) * V * file * * (1) Typed characters arrive in the current locale. Conversion is to be * done when 'encoding' is different from 'termencoding'. * (2) Text will be made available with the encoding specified with * 'encoding'. If this is not sufficient, system-specific conversion * might be required. * (3) For the GUI the correct font must be selected, no conversion done. * Otherwise, conversion is to be done when 'encoding' differs from * 'termencoding'. (Different in the GTK+ 2 port -- 'termencoding' * is always used for both input and output and must always be set to * "utf-8". gui_mch_init() does this automatically.) * (4) The encoding of the file is specified with 'fileencoding'. Conversion * is to be done when it's different from 'encoding'. * * The viminfo file is a special case: Only text is converted, not file names. * Vim scripts may contain an ":encoding" command. This has an effect for * some commands, like ":menutrans" */ #include "vim.h" #ifdef WIN32UNIX # ifndef WIN32_LEAN_AND_MEAN # define WIN32_LEAN_AND_MEAN # endif # if defined(FEAT_GUI) || defined(FEAT_XCLIPBOARD) # include <X11/Xwindows.h> # define WINBYTE wBYTE # else # include <windows.h> # define WINBYTE BYTE # endif # ifdef WIN32 # undef WIN32 // Some windows.h define WIN32, we don't want that here. # endif #else # define WINBYTE BYTE #endif #if (defined(MSWIN) || defined(WIN32UNIX)) && !defined(__MINGW32__) # include <winnls.h> #endif #ifdef FEAT_GUI_X11 # include <X11/Intrinsic.h> #endif #ifdef X_LOCALE # include <X11/Xlocale.h> # if !defined(HAVE_MBLEN) && !defined(mblen) # define mblen _Xmblen # endif #endif #if defined(FEAT_GUI_GTK) && defined(FEAT_XIM) # if GTK_CHECK_VERSION(3,0,0) # include <gdk/gdkkeysyms-compat.h> # else # include <gdk/gdkkeysyms.h> # endif # ifdef MSWIN # include <gdk/gdkwin32.h> # else # include <gdk/gdkx.h> # endif #endif #ifdef HAVE_WCHAR_H # include <wchar.h> #endif #if 0 // This has been disabled, because several people reported problems with the // wcwidth() and iswprint() library functions, esp. for Hebrew. # ifdef __STDC_ISO_10646__ # define USE_WCHAR_FUNCTIONS # endif #endif static int dbcs_char2len(int c); static int dbcs_char2bytes(int c, char_u *buf); static int dbcs_ptr2len(char_u *p); static int dbcs_ptr2len_len(char_u *p, int size); static int utf_ptr2cells_len(char_u *p, int size); static int dbcs_char2cells(int c); static int dbcs_ptr2cells_len(char_u *p, int size); static int dbcs_ptr2char(char_u *p); static int dbcs_head_off(char_u *base, char_u *p); /* * Lookup table to quickly get the length in bytes of a UTF-8 character from * the first byte of a UTF-8 string. * Bytes which are illegal when used as the first byte have a 1. * The NUL byte has length 1. */ static char utf8len_tab[256] = { 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,5,5,5,5,6,6,1,1, }; /* * Like utf8len_tab above, but using a zero for illegal lead bytes. */ static char utf8len_tab_zero[256] = { 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,5,5,5,5,6,6,0,0, }; /* * XIM often causes trouble. Define XIM_DEBUG to get a log of XIM callbacks * in the "xim.log" file. */ // #define XIM_DEBUG #ifdef XIM_DEBUG static void xim_log(char *s, ...) { va_list arglist; static FILE *fd = NULL; if (fd == (FILE *)-1) return; if (fd == NULL) { fd = mch_fopen("xim.log", "w"); if (fd == NULL) { emsg("Cannot open xim.log"); fd = (FILE *)-1; return; } } va_start(arglist, s); vfprintf(fd, s, arglist); va_end(arglist); } #endif /* * Canonical encoding names and their properties. * "iso-8859-n" is handled by enc_canonize() directly. */ static struct { char *name; int prop; int codepage;} enc_canon_table[] = { #define IDX_LATIN_1 0 {"latin1", ENC_8BIT + ENC_LATIN1, 1252}, #define IDX_ISO_2 1 {"iso-8859-2", ENC_8BIT, 0}, #define IDX_ISO_3 2 {"iso-8859-3", ENC_8BIT, 0}, #define IDX_ISO_4 3 {"iso-8859-4", ENC_8BIT, 0}, #define IDX_ISO_5 4 {"iso-8859-5", ENC_8BIT, 0}, #define IDX_ISO_6 5 {"iso-8859-6", ENC_8BIT, 0}, #define IDX_ISO_7 6 {"iso-8859-7", ENC_8BIT, 0}, #define IDX_ISO_8 7 {"iso-8859-8", ENC_8BIT, 0}, #define IDX_ISO_9 8 {"iso-8859-9", ENC_8BIT, 0}, #define IDX_ISO_10 9 {"iso-8859-10", ENC_8BIT, 0}, #define IDX_ISO_11 10 {"iso-8859-11", ENC_8BIT, 0}, #define IDX_ISO_13 11 {"iso-8859-13", ENC_8BIT, 0}, #define IDX_ISO_14 12 {"iso-8859-14", ENC_8BIT, 0}, #define IDX_ISO_15 13 {"iso-8859-15", ENC_8BIT + ENC_LATIN9, 0}, #define IDX_KOI8_R 14 {"koi8-r", ENC_8BIT, 0}, #define IDX_KOI8_U 15 {"koi8-u", ENC_8BIT, 0}, #define IDX_UTF8 16 {"utf-8", ENC_UNICODE, 0}, #define IDX_UCS2 17 {"ucs-2", ENC_UNICODE + ENC_ENDIAN_B + ENC_2BYTE, 0}, #define IDX_UCS2LE 18 {"ucs-2le", ENC_UNICODE + ENC_ENDIAN_L + ENC_2BYTE, 0}, #define IDX_UTF16 19 {"utf-16", ENC_UNICODE + ENC_ENDIAN_B + ENC_2WORD, 0}, #define IDX_UTF16LE 20 {"utf-16le", ENC_UNICODE + ENC_ENDIAN_L + ENC_2WORD, 0}, #define IDX_UCS4 21 {"ucs-4", ENC_UNICODE + ENC_ENDIAN_B + ENC_4BYTE, 0}, #define IDX_UCS4LE 22 {"ucs-4le", ENC_UNICODE + ENC_ENDIAN_L + ENC_4BYTE, 0}, // For debugging DBCS encoding on Unix. #define IDX_DEBUG 23 {"debug", ENC_DBCS, DBCS_DEBUG}, #define IDX_EUC_JP 24 {"euc-jp", ENC_DBCS, DBCS_JPNU}, #define IDX_SJIS 25 {"sjis", ENC_DBCS, DBCS_JPN}, #define IDX_EUC_KR 26 {"euc-kr", ENC_DBCS, DBCS_KORU}, #define IDX_EUC_CN 27 {"euc-cn", ENC_DBCS, DBCS_CHSU}, #define IDX_EUC_TW 28 {"euc-tw", ENC_DBCS, DBCS_CHTU}, #define IDX_BIG5 29 {"big5", ENC_DBCS, DBCS_CHT}, // MS-DOS and MS-Windows codepages are included here, so that they can be // used on Unix too. Most of them are similar to ISO-8859 encodings, but // not exactly the same. #define IDX_CP437 30 {"cp437", ENC_8BIT, 437}, // like iso-8859-1 #define IDX_CP737 31 {"cp737", ENC_8BIT, 737}, // like iso-8859-7 #define IDX_CP775 32 {"cp775", ENC_8BIT, 775}, // Baltic #define IDX_CP850 33 {"cp850", ENC_8BIT, 850}, // like iso-8859-4 #define IDX_CP852 34 {"cp852", ENC_8BIT, 852}, // like iso-8859-1 #define IDX_CP855 35 {"cp855", ENC_8BIT, 855}, // like iso-8859-2 #define IDX_CP857 36 {"cp857", ENC_8BIT, 857}, // like iso-8859-5 #define IDX_CP860 37 {"cp860", ENC_8BIT, 860}, // like iso-8859-9 #define IDX_CP861 38 {"cp861", ENC_8BIT, 861}, // like iso-8859-1 #define IDX_CP862 39 {"cp862", ENC_8BIT, 862}, // like iso-8859-1 #define IDX_CP863 40 {"cp863", ENC_8BIT, 863}, // like iso-8859-8 #define IDX_CP865 41 {"cp865", ENC_8BIT, 865}, // like iso-8859-1 #define IDX_CP866 42 {"cp866", ENC_8BIT, 866}, // like iso-8859-5 #define IDX_CP869 43 {"cp869", ENC_8BIT, 869}, // like iso-8859-7 #define IDX_CP874 44 {"cp874", ENC_8BIT, 874}, // Thai #define IDX_CP932 45 {"cp932", ENC_DBCS, DBCS_JPN}, #define IDX_CP936 46 {"cp936", ENC_DBCS, DBCS_CHS}, #define IDX_CP949 47 {"cp949", ENC_DBCS, DBCS_KOR}, #define IDX_CP950 48 {"cp950", ENC_DBCS, DBCS_CHT}, #define IDX_CP1250 49 {"cp1250", ENC_8BIT, 1250}, // Czech, Polish, etc. #define IDX_CP1251 50 {"cp1251", ENC_8BIT, 1251}, // Cyrillic // cp1252 is considered to be equal to latin1 #define IDX_CP1253 51 {"cp1253", ENC_8BIT, 1253}, // Greek #define IDX_CP1254 52 {"cp1254", ENC_8BIT, 1254}, // Turkish #define IDX_CP1255 53 {"cp1255", ENC_8BIT, 1255}, // Hebrew #define IDX_CP1256 54 {"cp1256", ENC_8BIT, 1256}, // Arabic #define IDX_CP1257 55 {"cp1257", ENC_8BIT, 1257}, // Baltic #define IDX_CP1258 56 {"cp1258", ENC_8BIT, 1258}, // Vietnamese #define IDX_MACROMAN 57 {"macroman", ENC_8BIT + ENC_MACROMAN, 0}, // Mac OS #define IDX_DECMCS 58 {"dec-mcs", ENC_8BIT, 0}, // DEC MCS #define IDX_HPROMAN8 59 {"hp-roman8", ENC_8BIT, 0}, // HP Roman8 #define IDX_COUNT 60 }; /* * Aliases for encoding names. */ static struct { char *name; int canon;} enc_alias_table[] = { {"ansi", IDX_LATIN_1}, {"iso-8859-1", IDX_LATIN_1}, {"latin2", IDX_ISO_2}, {"latin3", IDX_ISO_3}, {"latin4", IDX_ISO_4}, {"cyrillic", IDX_ISO_5}, {"arabic", IDX_ISO_6}, {"greek", IDX_ISO_7}, #ifdef MSWIN {"hebrew", IDX_CP1255}, #else {"hebrew", IDX_ISO_8}, #endif {"latin5", IDX_ISO_9}, {"turkish", IDX_ISO_9}, // ? {"latin6", IDX_ISO_10}, {"nordic", IDX_ISO_10}, // ? {"thai", IDX_ISO_11}, // ? {"latin7", IDX_ISO_13}, {"latin8", IDX_ISO_14}, {"latin9", IDX_ISO_15}, {"utf8", IDX_UTF8}, {"unicode", IDX_UCS2}, {"ucs2", IDX_UCS2}, {"ucs2be", IDX_UCS2}, {"ucs-2be", IDX_UCS2}, {"ucs2le", IDX_UCS2LE}, {"utf16", IDX_UTF16}, {"utf16be", IDX_UTF16}, {"utf-16be", IDX_UTF16}, {"utf16le", IDX_UTF16LE}, {"ucs4", IDX_UCS4}, {"ucs4be", IDX_UCS4}, {"ucs-4be", IDX_UCS4}, {"ucs4le", IDX_UCS4LE}, {"utf32", IDX_UCS4}, {"utf-32", IDX_UCS4}, {"utf32be", IDX_UCS4}, {"utf-32be", IDX_UCS4}, {"utf32le", IDX_UCS4LE}, {"utf-32le", IDX_UCS4LE}, {"932", IDX_CP932}, {"949", IDX_CP949}, {"936", IDX_CP936}, {"gbk", IDX_CP936}, {"950", IDX_CP950}, {"eucjp", IDX_EUC_JP}, {"unix-jis", IDX_EUC_JP}, {"ujis", IDX_EUC_JP}, {"shift-jis", IDX_SJIS}, {"pck", IDX_SJIS}, // Sun: PCK {"euckr", IDX_EUC_KR}, {"5601", IDX_EUC_KR}, // Sun: KS C 5601 {"euccn", IDX_EUC_CN}, {"gb2312", IDX_EUC_CN}, {"euctw", IDX_EUC_TW}, #if defined(MSWIN) || defined(WIN32UNIX) || defined(MACOS_X) {"japan", IDX_CP932}, {"korea", IDX_CP949}, {"prc", IDX_CP936}, {"chinese", IDX_CP936}, {"taiwan", IDX_CP950}, {"big5", IDX_CP950}, #else {"japan", IDX_EUC_JP}, {"korea", IDX_EUC_KR}, {"prc", IDX_EUC_CN}, {"chinese", IDX_EUC_CN}, {"taiwan", IDX_EUC_TW}, {"cp950", IDX_BIG5}, {"950", IDX_BIG5}, #endif {"mac", IDX_MACROMAN}, {"mac-roman", IDX_MACROMAN}, {NULL, 0} }; #ifndef CP_UTF8 # define CP_UTF8 65001 // magic number from winnls.h #endif /* * Find encoding "name" in the list of canonical encoding names. * Returns -1 if not found. */ static int enc_canon_search(char_u *name) { int i; for (i = 0; i < IDX_COUNT; ++i) if (STRCMP(name, enc_canon_table[i].name) == 0) return i; return -1; } /* * Find canonical encoding "name" in the list and return its properties. * Returns 0 if not found. */ int enc_canon_props(char_u *name) { int i; i = enc_canon_search(name); if (i >= 0) return enc_canon_table[i].prop; #ifdef MSWIN if (name[0] == 'c' && name[1] == 'p' && VIM_ISDIGIT(name[2])) { CPINFO cpinfo; // Get info on this codepage to find out what it is. if (GetCPInfo(atoi((char *)name + 2), &cpinfo) != 0) { if (cpinfo.MaxCharSize == 1) // some single-byte encoding return ENC_8BIT; if (cpinfo.MaxCharSize == 2 && (cpinfo.LeadByte[0] != 0 || cpinfo.LeadByte[1] != 0)) // must be a DBCS encoding return ENC_DBCS; } return 0; } #endif if (STRNCMP(name, "2byte-", 6) == 0) return ENC_DBCS; if (STRNCMP(name, "8bit-", 5) == 0 || STRNCMP(name, "iso-8859-", 9) == 0) return ENC_8BIT; return 0; } /* * Set up for using multi-byte characters. * Called in three cases: * - by main() to initialize (p_enc == NULL) * - by set_init_1() after 'encoding' was set to its default. * - by do_set() when 'encoding' has been set. * p_enc must have been passed through enc_canonize() already. * Sets the "enc_unicode", "enc_utf8", "enc_dbcs" and "has_mbyte" flags. * Fills mb_bytelen_tab[] and returns NULL when there are no problems. * When there is something wrong: Returns an error message and doesn't change * anything. */ char * mb_init(void) { int i; int idx; int n; int enc_dbcs_new = 0; #if defined(USE_ICONV) && !defined(MSWIN) && !defined(WIN32UNIX) \ && !defined(MACOS_CONVERT) # define LEN_FROM_CONV vimconv_T vimconv; char_u *p; #endif if (p_enc == NULL) { // Just starting up: set the whole table to one's. for (i = 0; i < 256; ++i) mb_bytelen_tab[i] = 1; input_conv.vc_type = CONV_NONE; input_conv.vc_factor = 1; output_conv.vc_type = CONV_NONE; return NULL; } #ifdef MSWIN if (p_enc[0] == 'c' && p_enc[1] == 'p' && VIM_ISDIGIT(p_enc[2])) { CPINFO cpinfo; // Get info on this codepage to find out what it is. if (GetCPInfo(atoi((char *)p_enc + 2), &cpinfo) != 0) { if (cpinfo.MaxCharSize == 1) { // some single-byte encoding enc_unicode = 0; enc_utf8 = FALSE; } else if (cpinfo.MaxCharSize == 2 && (cpinfo.LeadByte[0] != 0 || cpinfo.LeadByte[1] != 0)) { // must be a DBCS encoding, check below enc_dbcs_new = atoi((char *)p_enc + 2); } else goto codepage_invalid; } else if (GetLastError() == ERROR_INVALID_PARAMETER) { codepage_invalid: return N_("E543: Not a valid codepage"); } } #endif else if (STRNCMP(p_enc, "8bit-", 5) == 0 || STRNCMP(p_enc, "iso-8859-", 9) == 0) { // Accept any "8bit-" or "iso-8859-" name. enc_unicode = 0; enc_utf8 = FALSE; } else if (STRNCMP(p_enc, "2byte-", 6) == 0) { #ifdef MSWIN // Windows: accept only valid codepage numbers, check below. if (p_enc[6] != 'c' || p_enc[7] != 'p' || (enc_dbcs_new = atoi((char *)p_enc + 8)) == 0) return e_invarg; #else // Unix: accept any "2byte-" name, assume current locale. enc_dbcs_new = DBCS_2BYTE; #endif } else if ((idx = enc_canon_search(p_enc)) >= 0) { i = enc_canon_table[idx].prop; if (i & ENC_UNICODE) { // Unicode enc_utf8 = TRUE; if (i & (ENC_2BYTE | ENC_2WORD)) enc_unicode = 2; else if (i & ENC_4BYTE) enc_unicode = 4; else enc_unicode = 0; } else if (i & ENC_DBCS) { // 2byte, handle below enc_dbcs_new = enc_canon_table[idx].codepage; } else { // Must be 8-bit. enc_unicode = 0; enc_utf8 = FALSE; } } else // Don't know what encoding this is, reject it. return e_invarg; if (enc_dbcs_new != 0) { #ifdef MSWIN // Check if the DBCS code page is OK. if (!IsValidCodePage(enc_dbcs_new)) goto codepage_invalid; #endif enc_unicode = 0; enc_utf8 = FALSE; } enc_dbcs = enc_dbcs_new; has_mbyte = (enc_dbcs != 0 || enc_utf8); #if defined(MSWIN) || defined(FEAT_CYGWIN_WIN32_CLIPBOARD) enc_codepage = encname2codepage(p_enc); enc_latin9 = (STRCMP(p_enc, "iso-8859-15") == 0); #endif // Detect an encoding that uses latin1 characters. enc_latin1like = (enc_utf8 || STRCMP(p_enc, "latin1") == 0 || STRCMP(p_enc, "iso-8859-15") == 0); /* * Set the function pointers. */ if (enc_utf8) { mb_ptr2len = utfc_ptr2len; mb_ptr2len_len = utfc_ptr2len_len; mb_char2len = utf_char2len; mb_char2bytes = utf_char2bytes; mb_ptr2cells = utf_ptr2cells; mb_ptr2cells_len = utf_ptr2cells_len; mb_char2cells = utf_char2cells; mb_off2cells = utf_off2cells; mb_ptr2char = utf_ptr2char; mb_head_off = utf_head_off; } else if (enc_dbcs != 0) { mb_ptr2len = dbcs_ptr2len; mb_ptr2len_len = dbcs_ptr2len_len; mb_char2len = dbcs_char2len; mb_char2bytes = dbcs_char2bytes; mb_ptr2cells = dbcs_ptr2cells; mb_ptr2cells_len = dbcs_ptr2cells_len; mb_char2cells = dbcs_char2cells; mb_off2cells = dbcs_off2cells; mb_ptr2char = dbcs_ptr2char; mb_head_off = dbcs_head_off; } else { mb_ptr2len = latin_ptr2len; mb_ptr2len_len = latin_ptr2len_len; mb_char2len = latin_char2len; mb_char2bytes = latin_char2bytes; mb_ptr2cells = latin_ptr2cells; mb_ptr2cells_len = latin_ptr2cells_len; mb_char2cells = latin_char2cells; mb_off2cells = latin_off2cells; mb_ptr2char = latin_ptr2char; mb_head_off = latin_head_off; } /* * Fill the mb_bytelen_tab[] for MB_BYTE2LEN(). */ #ifdef LEN_FROM_CONV // When 'encoding' is different from the current locale mblen() won't // work. Use conversion to "utf-8" instead. vimconv.vc_type = CONV_NONE; if (enc_dbcs) { p = enc_locale(); if (p == NULL || STRCMP(p, p_enc) != 0) { convert_setup(&vimconv, p_enc, (char_u *)"utf-8"); vimconv.vc_fail = TRUE; } vim_free(p); } #endif for (i = 0; i < 256; ++i) { // Our own function to reliably check the length of UTF-8 characters, // independent of mblen(). if (enc_utf8) n = utf8len_tab[i]; else if (enc_dbcs == 0) n = 1; else { #if defined(MSWIN) || defined(WIN32UNIX) // enc_dbcs is set by setting 'fileencoding'. It becomes a Windows // CodePage identifier, which we can pass directly in to Windows // API n = IsDBCSLeadByteEx(enc_dbcs, (WINBYTE)i) ? 2 : 1; #else # if defined(__amigaos4__) || defined(__ANDROID__) || \ !(defined(HAVE_MBLEN) || defined(X_LOCALE)) /* * if mblen() is not available, character which MSB is turned on * are treated as leading byte character. (note : This assumption * is not always true.) */ n = (i & 0x80) ? 2 : 1; # else char buf[MB_MAXBYTES + 1]; if (i == NUL) // just in case mblen() can't handle "" n = 1; else { buf[0] = i; buf[1] = 0; # ifdef LEN_FROM_CONV if (vimconv.vc_type != CONV_NONE) { /* * string_convert() should fail when converting the first * byte of a double-byte character. */ p = string_convert(&vimconv, (char_u *)buf, NULL); if (p != NULL) { vim_free(p); n = 1; } else n = 2; } else # endif { /* * mblen() should return -1 for invalid (means the leading * multibyte) character. However there are some platforms * where mblen() returns 0 for invalid character. * Therefore, following condition includes 0. */ vim_ignored = mblen(NULL, 0); // First reset the state. if (mblen(buf, (size_t)1) <= 0) n = 2; else n = 1; } } # endif #endif } mb_bytelen_tab[i] = n; } #ifdef LEN_FROM_CONV convert_setup(&vimconv, NULL, NULL); #endif // The cell width depends on the type of multi-byte characters. (void)init_chartab(); // When enc_utf8 is set or reset, (de)allocate ScreenLinesUC[] screenalloc(FALSE); // When using Unicode, set default for 'fileencodings'. if (enc_utf8 && !option_was_set((char_u *)"fencs")) set_string_option_direct((char_u *)"fencs", -1, (char_u *)"ucs-bom,utf-8,default,latin1", OPT_FREE, 0); #if defined(HAVE_BIND_TEXTDOMAIN_CODESET) && defined(FEAT_GETTEXT) // GNU gettext 0.10.37 supports this feature: set the codeset used for // translated messages independently from the current locale. (void)bind_textdomain_codeset(VIMPACKAGE, enc_utf8 ? "utf-8" : (char *)p_enc); #endif #ifdef MSWIN // When changing 'encoding' while starting up, then convert the command // line arguments from the active codepage to 'encoding'. if (starting != 0) fix_arg_enc(); #endif // Fire an autocommand to let people do custom font setup. This must be // after Vim has been setup for the new encoding. apply_autocmds(EVENT_ENCODINGCHANGED, NULL, (char_u *)"", FALSE, curbuf); #ifdef FEAT_SPELL // Need to reload spell dictionaries spell_reload(); #endif return NULL; } /* * Return the size of the BOM for the current buffer: * 0 - no BOM * 2 - UCS-2 or UTF-16 BOM * 4 - UCS-4 BOM * 3 - UTF-8 BOM */ int bomb_size(void) { int n = 0; if (curbuf->b_p_bomb && !curbuf->b_p_bin) { if (*curbuf->b_p_fenc == NUL) { if (enc_utf8) { if (enc_unicode != 0) n = enc_unicode; else n = 3; } } else if (STRCMP(curbuf->b_p_fenc, "utf-8") == 0) n = 3; else if (STRNCMP(curbuf->b_p_fenc, "ucs-2", 5) == 0 || STRNCMP(curbuf->b_p_fenc, "utf-16", 6) == 0) n = 2; else if (STRNCMP(curbuf->b_p_fenc, "ucs-4", 5) == 0) n = 4; } return n; } #if defined(FEAT_QUICKFIX) || defined(PROTO) /* * Remove all BOM from "s" by moving remaining text. */ void remove_bom(char_u *s) { if (enc_utf8) { char_u *p = s; while ((p = vim_strbyte(p, 0xef)) != NULL) { if (p[1] == 0xbb && p[2] == 0xbf) STRMOVE(p, p + 3); else ++p; } } } #endif /* * Get class of pointer: * 0 for blank or NUL * 1 for punctuation * 2 for an (ASCII) word character * >2 for other word characters */ int mb_get_class(char_u *p) { return mb_get_class_buf(p, curbuf); } int mb_get_class_buf(char_u *p, buf_T *buf) { if (MB_BYTE2LEN(p[0]) == 1) { if (p[0] == NUL || VIM_ISWHITE(p[0])) return 0; if (vim_iswordc_buf(p[0], buf)) return 2; return 1; } if (enc_dbcs != 0 && p[0] != NUL && p[1] != NUL) return dbcs_class(p[0], p[1]); if (enc_utf8) return utf_class_buf(utf_ptr2char(p), buf); return 0; } /* * Get class of a double-byte character. This always returns 3 or bigger. * TODO: Should return 1 for punctuation. */ int dbcs_class(unsigned lead, unsigned trail) { switch (enc_dbcs) { // please add classify routine for your language in here case DBCS_JPNU: // ? case DBCS_JPN: { // JIS code classification unsigned char lb = lead; unsigned char tb = trail; // convert process code to JIS # if defined(MSWIN) || defined(WIN32UNIX) || defined(MACOS_X) // process code is SJIS if (lb <= 0x9f) lb = (lb - 0x81) * 2 + 0x21; else lb = (lb - 0xc1) * 2 + 0x21; if (tb <= 0x7e) tb -= 0x1f; else if (tb <= 0x9e) tb -= 0x20; else { tb -= 0x7e; lb += 1; } # else /* * XXX: Code page identification can not use with all * system! So, some other encoding information * will be needed. * In japanese: SJIS,EUC,UNICODE,(JIS) * Note that JIS-code system don't use as * process code in most system because it uses * escape sequences(JIS is context depend encoding). */ // assume process code is JAPANESE-EUC lb &= 0x7f; tb &= 0x7f; # endif // exceptions switch (lb << 8 | tb) { case 0x2121: // ZENKAKU space return 0; case 0x2122: // TOU-TEN (Japanese comma) case 0x2123: // KU-TEN (Japanese period) case 0x2124: // ZENKAKU comma case 0x2125: // ZENKAKU period return 1; case 0x213c: // prolongedsound handled as KATAKANA return 13; } // sieved by KU code switch (lb) { case 0x21: case 0x22: // special symbols return 10; case 0x23: // alphanumeric return 11; case 0x24: // hiragana return 12; case 0x25: // katakana return 13; case 0x26: // greek return 14; case 0x27: // russian return 15; case 0x28: // lines return 16; default: // kanji return 17; } } case DBCS_KORU: // ? case DBCS_KOR: { // KS code classification unsigned char c1 = lead; unsigned char c2 = trail; /* * 20 : Hangul * 21 : Hanja * 22 : Symbols * 23 : Alphanumeric/Roman Letter (Full width) * 24 : Hangul Letter(Alphabet) * 25 : Roman Numeral/Greek Letter * 26 : Box Drawings * 27 : Unit Symbols * 28 : Circled/Parenthesized Letter * 29 : Hiragana/Katakana * 30 : Cyrillic Letter */ if (c1 >= 0xB0 && c1 <= 0xC8) // Hangul return 20; #if defined(MSWIN) || defined(WIN32UNIX) else if (c1 <= 0xA0 || c2 <= 0xA0) // Extended Hangul Region : MS UHC(Unified Hangul Code) // c1: 0x81-0xA0 with c2: 0x41-0x5A, 0x61-0x7A, 0x81-0xFE // c1: 0xA1-0xC6 with c2: 0x41-0x5A, 0x61-0x7A, 0x81-0xA0 return 20; #endif else if (c1 >= 0xCA && c1 <= 0xFD) // Hanja return 21; else switch (c1) { case 0xA1: case 0xA2: // Symbols return 22; case 0xA3: // Alphanumeric return 23; case 0xA4: // Hangul Letter(Alphabet) return 24; case 0xA5: // Roman Numeral/Greek Letter return 25; case 0xA6: // Box Drawings return 26; case 0xA7: // Unit Symbols return 27; case 0xA8: case 0xA9: if (c2 <= 0xAF) return 25; // Roman Letter else if (c2 >= 0xF6) return 22; // Symbols else // Circled/Parenthesized Letter return 28; case 0xAA: case 0xAB: // Hiragana/Katakana return 29; case 0xAC: // Cyrillic Letter return 30; } } default: break; } return 3; } /* * mb_char2len() function pointer. * Return length in bytes of character "c". * Returns 1 for a single-byte character. */ int latin_char2len(int c UNUSED) { return 1; } static int dbcs_char2len( int c) { if (c >= 0x100) return 2; return 1; } /* * mb_char2bytes() function pointer. * Convert a character to its bytes. * Returns the length in bytes. */ int latin_char2bytes(int c, char_u *buf) { buf[0] = c; return 1; } static int dbcs_char2bytes(int c, char_u *buf) { if (c >= 0x100) { buf[0] = (unsigned)c >> 8; buf[1] = c; // Never use a NUL byte, it causes lots of trouble. It's an invalid // character anyway. if (buf[1] == NUL) buf[1] = '\n'; return 2; } buf[0] = c; return 1; } /* * mb_ptr2len() function pointer. * Get byte length of character at "*p" but stop at a NUL. * For UTF-8 this includes following composing characters. * Returns 0 when *p is NUL. */ int latin_ptr2len(char_u *p) { return MB_BYTE2LEN(*p); } static int dbcs_ptr2len( char_u *p) { int len; // Check if second byte is not missing. len = MB_BYTE2LEN(*p); if (len == 2 && p[1] == NUL) len = 1; return len; } /* * mb_ptr2len_len() function pointer. * Like mb_ptr2len(), but limit to read "size" bytes. * Returns 0 for an empty string. * Returns 1 for an illegal char or an incomplete byte sequence. */ int latin_ptr2len_len(char_u *p, int size) { if (size < 1 || *p == NUL) return 0; return 1; } static int dbcs_ptr2len_len(char_u *p, int size) { int len; if (size < 1 || *p == NUL) return 0; if (size == 1) return 1; // Check that second byte is not missing. len = MB_BYTE2LEN(*p); if (len == 2 && p[1] == NUL) len = 1; return len; } struct interval { long first; long last; }; /* * Return TRUE if "c" is in "table[size / sizeof(struct interval)]". */ static int intable(struct interval *table, size_t size, int c) { int mid, bot, top; // first quick check for Latin1 etc. characters if (c < table[0].first) return FALSE; // binary search in table bot = 0; top = (int)(size / sizeof(struct interval) - 1); while (top >= bot) { mid = (bot + top) / 2; if (table[mid].last < c) bot = mid + 1; else if (table[mid].first > c) top = mid - 1; else return TRUE; } return FALSE; } // Sorted list of non-overlapping intervals of East Asian Ambiguous // characters, generated with ../runtime/tools/unicode.vim. static struct interval ambiguous[] = { {0x00a1, 0x00a1}, {0x00a4, 0x00a4}, {0x00a7, 0x00a8}, {0x00aa, 0x00aa}, {0x00ad, 0x00ae}, {0x00b0, 0x00b4}, {0x00b6, 0x00ba}, {0x00bc, 0x00bf}, {0x00c6, 0x00c6}, {0x00d0, 0x00d0}, {0x00d7, 0x00d8}, {0x00de, 0x00e1}, {0x00e6, 0x00e6}, {0x00e8, 0x00ea}, {0x00ec, 0x00ed}, {0x00f0, 0x00f0}, {0x00f2, 0x00f3}, {0x00f7, 0x00fa}, {0x00fc, 0x00fc}, {0x00fe, 0x00fe}, {0x0101, 0x0101}, {0x0111, 0x0111}, {0x0113, 0x0113}, {0x011b, 0x011b}, {0x0126, 0x0127}, {0x012b, 0x012b}, {0x0131, 0x0133}, {0x0138, 0x0138}, {0x013f, 0x0142}, {0x0144, 0x0144}, {0x0148, 0x014b}, {0x014d, 0x014d}, {0x0152, 0x0153}, {0x0166, 0x0167}, {0x016b, 0x016b}, {0x01ce, 0x01ce}, {0x01d0, 0x01d0}, {0x01d2, 0x01d2}, {0x01d4, 0x01d4}, {0x01d6, 0x01d6}, {0x01d8, 0x01d8}, {0x01da, 0x01da}, {0x01dc, 0x01dc}, {0x0251, 0x0251}, {0x0261, 0x0261}, {0x02c4, 0x02c4}, {0x02c7, 0x02c7}, {0x02c9, 0x02cb}, {0x02cd, 0x02cd}, {0x02d0, 0x02d0}, {0x02d8, 0x02db}, {0x02dd, 0x02dd}, {0x02df, 0x02df}, {0x0300, 0x036f}, {0x0391, 0x03a1}, {0x03a3, 0x03a9}, {0x03b1, 0x03c1}, {0x03c3, 0x03c9}, {0x0401, 0x0401}, {0x0410, 0x044f}, {0x0451, 0x0451}, {0x2010, 0x2010}, {0x2013, 0x2016}, {0x2018, 0x2019}, {0x201c, 0x201d}, {0x2020, 0x2022}, {0x2024, 0x2027}, {0x2030, 0x2030}, {0x2032, 0x2033}, {0x2035, 0x2035}, {0x203b, 0x203b}, {0x203e, 0x203e}, {0x2074, 0x2074}, {0x207f, 0x207f}, {0x2081, 0x2084}, {0x20ac, 0x20ac}, {0x2103, 0x2103}, {0x2105, 0x2105}, {0x2109, 0x2109}, {0x2113, 0x2113}, {0x2116, 0x2116}, {0x2121, 0x2122}, {0x2126, 0x2126}, {0x212b, 0x212b}, {0x2153, 0x2154}, {0x215b, 0x215e}, {0x2160, 0x216b}, {0x2170, 0x2179}, {0x2189, 0x2189}, {0x2190, 0x2199}, {0x21b8, 0x21b9}, {0x21d2, 0x21d2}, {0x21d4, 0x21d4}, {0x21e7, 0x21e7}, {0x2200, 0x2200}, {0x2202, 0x2203}, {0x2207, 0x2208}, {0x220b, 0x220b}, {0x220f, 0x220f}, {0x2211, 0x2211}, {0x2215, 0x2215}, {0x221a, 0x221a}, {0x221d, 0x2220}, {0x2223, 0x2223}, {0x2225, 0x2225}, {0x2227, 0x222c}, {0x222e, 0x222e}, {0x2234, 0x2237}, {0x223c, 0x223d}, {0x2248, 0x2248}, {0x224c, 0x224c}, {0x2252, 0x2252}, {0x2260, 0x2261}, {0x2264, 0x2267}, {0x226a, 0x226b}, {0x226e, 0x226f}, {0x2282, 0x2283}, {0x2286, 0x2287}, {0x2295, 0x2295}, {0x2299, 0x2299}, {0x22a5, 0x22a5}, {0x22bf, 0x22bf}, {0x2312, 0x2312}, {0x2460, 0x24e9}, {0x24eb, 0x254b}, {0x2550, 0x2573}, {0x2580, 0x258f}, {0x2592, 0x2595}, {0x25a0, 0x25a1}, {0x25a3, 0x25a9}, {0x25b2, 0x25b3}, {0x25b6, 0x25b7}, {0x25bc, 0x25bd}, {0x25c0, 0x25c1}, {0x25c6, 0x25c8}, {0x25cb, 0x25cb}, {0x25ce, 0x25d1}, {0x25e2, 0x25e5}, {0x25ef, 0x25ef}, {0x2605, 0x2606}, {0x2609, 0x2609}, {0x260e, 0x260f}, {0x261c, 0x261c}, {0x261e, 0x261e}, {0x2640, 0x2640}, {0x2642, 0x2642}, {0x2660, 0x2661}, {0x2663, 0x2665}, {0x2667, 0x266a}, {0x266c, 0x266d}, {0x266f, 0x266f}, {0x269e, 0x269f}, {0x26bf, 0x26bf}, {0x26c6, 0x26cd}, {0x26cf, 0x26d3}, {0x26d5, 0x26e1}, {0x26e3, 0x26e3}, {0x26e8, 0x26e9}, {0x26eb, 0x26f1}, {0x26f4, 0x26f4}, {0x26f6, 0x26f9}, {0x26fb, 0x26fc}, {0x26fe, 0x26ff}, {0x273d, 0x273d}, {0x2776, 0x277f}, {0x2b56, 0x2b59}, {0x3248, 0x324f}, {0xe000, 0xf8ff}, {0xfe00, 0xfe0f}, {0xfffd, 0xfffd}, {0x1f100, 0x1f10a}, {0x1f110, 0x1f12d}, {0x1f130, 0x1f169}, {0x1f170, 0x1f18d}, {0x1f18f, 0x1f190}, {0x1f19b, 0x1f1ac}, {0xe0100, 0xe01ef}, {0xf0000, 0xffffd}, {0x100000, 0x10fffd} }; #if defined(FEAT_TERMINAL) || defined(PROTO) /* * utf_char2cells() with different argument type for libvterm. */ int utf_uint2cells(UINT32_T c) { if (c >= 0x100 && utf_iscomposing((int)c)) return 0; return utf_char2cells((int)c); } #endif /* * For UTF-8 character "c" return 2 for a double-width character, 1 for others. * Returns 4 or 6 for an unprintable character. * Is only correct for characters >= 0x80. * When p_ambw is "double", return 2 for a character with East Asian Width * class 'A'(mbiguous). */ int utf_char2cells(int c) { // Sorted list of non-overlapping intervals of East Asian double width // characters, generated with ../runtime/tools/unicode.vim. static struct interval doublewidth[] = { {0x1100, 0x115f}, {0x231a, 0x231b}, {0x2329, 0x232a}, {0x23e9, 0x23ec}, {0x23f0, 0x23f0}, {0x23f3, 0x23f3}, {0x25fd, 0x25fe}, {0x2614, 0x2615}, {0x2648, 0x2653}, {0x267f, 0x267f}, {0x2693, 0x2693}, {0x26a1, 0x26a1}, {0x26aa, 0x26ab}, {0x26bd, 0x26be}, {0x26c4, 0x26c5}, {0x26ce, 0x26ce}, {0x26d4, 0x26d4}, {0x26ea, 0x26ea}, {0x26f2, 0x26f3}, {0x26f5, 0x26f5}, {0x26fa, 0x26fa}, {0x26fd, 0x26fd}, {0x2705, 0x2705}, {0x270a, 0x270b}, {0x2728, 0x2728}, {0x274c, 0x274c}, {0x274e, 0x274e}, {0x2753, 0x2755}, {0x2757, 0x2757}, {0x2795, 0x2797}, {0x27b0, 0x27b0}, {0x27bf, 0x27bf}, {0x2b1b, 0x2b1c}, {0x2b50, 0x2b50}, {0x2b55, 0x2b55}, {0x2e80, 0x2e99}, {0x2e9b, 0x2ef3}, {0x2f00, 0x2fd5}, {0x2ff0, 0x2ffb}, {0x3000, 0x303e}, {0x3041, 0x3096}, {0x3099, 0x30ff}, {0x3105, 0x312f}, {0x3131, 0x318e}, {0x3190, 0x31ba}, {0x31c0, 0x31e3}, {0x31f0, 0x321e}, {0x3220, 0x3247}, {0x3250, 0x4dbf}, {0x4e00, 0xa48c}, {0xa490, 0xa4c6}, {0xa960, 0xa97c}, {0xac00, 0xd7a3}, {0xf900, 0xfaff}, {0xfe10, 0xfe19}, {0xfe30, 0xfe52}, {0xfe54, 0xfe66}, {0xfe68, 0xfe6b}, {0xff01, 0xff60}, {0xffe0, 0xffe6}, {0x16fe0, 0x16fe3}, {0x17000, 0x187f7}, {0x18800, 0x18af2}, {0x1b000, 0x1b11e}, {0x1b150, 0x1b152}, {0x1b164, 0x1b167}, {0x1b170, 0x1b2fb}, {0x1f004, 0x1f004}, {0x1f0cf, 0x1f0cf}, {0x1f18e, 0x1f18e}, {0x1f191, 0x1f19a}, {0x1f200, 0x1f202}, {0x1f210, 0x1f23b}, {0x1f240, 0x1f248}, {0x1f250, 0x1f251}, {0x1f260, 0x1f265}, {0x1f300, 0x1f320}, {0x1f32d, 0x1f335}, {0x1f337, 0x1f37c}, {0x1f37e, 0x1f393}, {0x1f3a0, 0x1f3ca}, {0x1f3cf, 0x1f3d3}, {0x1f3e0, 0x1f3f0}, {0x1f3f4, 0x1f3f4}, {0x1f3f8, 0x1f43e}, {0x1f440, 0x1f440}, {0x1f442, 0x1f4fc}, {0x1f4ff, 0x1f53d}, {0x1f54b, 0x1f54e}, {0x1f550, 0x1f567}, {0x1f57a, 0x1f57a}, {0x1f595, 0x1f596}, {0x1f5a4, 0x1f5a4}, {0x1f5fb, 0x1f64f}, {0x1f680, 0x1f6c5}, {0x1f6cc, 0x1f6cc}, {0x1f6d0, 0x1f6d2}, {0x1f6d5, 0x1f6d5}, {0x1f6eb, 0x1f6ec}, {0x1f6f4, 0x1f6fa}, {0x1f7e0, 0x1f7eb}, {0x1f90d, 0x1f971}, {0x1f973, 0x1f976}, {0x1f97a, 0x1f9a2}, {0x1f9a5, 0x1f9aa}, {0x1f9ae, 0x1f9ca}, {0x1f9cd, 0x1f9ff}, {0x1fa70, 0x1fa73}, {0x1fa78, 0x1fa7a}, {0x1fa80, 0x1fa82}, {0x1fa90, 0x1fa95}, {0x20000, 0x2fffd}, {0x30000, 0x3fffd} }; // Sorted list of non-overlapping intervals of Emoji characters that don't // have ambiguous or double width, // based on http://unicode.org/emoji/charts/emoji-list.html static struct interval emoji_width[] = { {0x1f1e6, 0x1f1ff}, {0x1f321, 0x1f321}, {0x1f324, 0x1f32c}, {0x1f336, 0x1f336}, {0x1f37d, 0x1f37d}, {0x1f396, 0x1f397}, {0x1f399, 0x1f39b}, {0x1f39e, 0x1f39f}, {0x1f3cb, 0x1f3ce}, {0x1f3d4, 0x1f3df}, {0x1f3f3, 0x1f3f5}, {0x1f3f7, 0x1f3f7}, {0x1f43f, 0x1f43f}, {0x1f441, 0x1f441}, {0x1f4fd, 0x1f4fd}, {0x1f549, 0x1f54a}, {0x1f56f, 0x1f570}, {0x1f573, 0x1f579}, {0x1f587, 0x1f587}, {0x1f58a, 0x1f58d}, {0x1f590, 0x1f590}, {0x1f5a5, 0x1f5a5}, {0x1f5a8, 0x1f5a8}, {0x1f5b1, 0x1f5b2}, {0x1f5bc, 0x1f5bc}, {0x1f5c2, 0x1f5c4}, {0x1f5d1, 0x1f5d3}, {0x1f5dc, 0x1f5de}, {0x1f5e1, 0x1f5e1}, {0x1f5e3, 0x1f5e3}, {0x1f5e8, 0x1f5e8}, {0x1f5ef, 0x1f5ef}, {0x1f5f3, 0x1f5f3}, {0x1f5fa, 0x1f5fa}, {0x1f6cb, 0x1f6cf}, {0x1f6e0, 0x1f6e5}, {0x1f6e9, 0x1f6e9}, {0x1f6f0, 0x1f6f0}, {0x1f6f3, 0x1f6f3} }; if (c >= 0x100) { #ifdef USE_WCHAR_FUNCTIONS /* * Assume the library function wcwidth() works better than our own * stuff. It should return 1 for ambiguous width chars! */ int n = wcwidth(c); if (n < 0) return 6; // unprintable, displays <xxxx> if (n > 1) return n; #else if (!utf_printable(c)) return 6; // unprintable, displays <xxxx> if (intable(doublewidth, sizeof(doublewidth), c)) return 2; #endif if (p_emoji && intable(emoji_width, sizeof(emoji_width), c)) return 2; } // Characters below 0x100 are influenced by 'isprint' option else if (c >= 0x80 && !vim_isprintc(c)) return 4; // unprintable, displays <xx> if (c >= 0x80 && *p_ambw == 'd' && intable(ambiguous, sizeof(ambiguous), c)) return 2; return 1; } /* * mb_ptr2cells() function pointer. * Return the number of display cells character at "*p" occupies. * This doesn't take care of unprintable characters, use ptr2cells() for that. */ int latin_ptr2cells(char_u *p UNUSED) { return 1; } int utf_ptr2cells( char_u *p) { int c; // Need to convert to a wide character. if (*p >= 0x80) { c = utf_ptr2char(p); // An illegal byte is displayed as <xx>. if (utf_ptr2len(p) == 1 || c == NUL) return 4; // If the char is ASCII it must be an overlong sequence. if (c < 0x80) return char2cells(c); return utf_char2cells(c); } return 1; } int dbcs_ptr2cells(char_u *p) { // Number of cells is equal to number of bytes, except for euc-jp when // the first byte is 0x8e. if (enc_dbcs == DBCS_JPNU && *p == 0x8e) return 1; return MB_BYTE2LEN(*p); } /* * mb_ptr2cells_len() function pointer. * Like mb_ptr2cells(), but limit string length to "size". * For an empty string or truncated character returns 1. */ int latin_ptr2cells_len(char_u *p UNUSED, int size UNUSED) { return 1; } static int utf_ptr2cells_len(char_u *p, int size) { int c; // Need to convert to a wide character. if (size > 0 && *p >= 0x80) { if (utf_ptr2len_len(p, size) < utf8len_tab[*p]) return 1; // truncated c = utf_ptr2char(p); // An illegal byte is displayed as <xx>. if (utf_ptr2len(p) == 1 || c == NUL) return 4; // If the char is ASCII it must be an overlong sequence. if (c < 0x80) return char2cells(c); return utf_char2cells(c); } return 1; } static int dbcs_ptr2cells_len(char_u *p, int size) { // Number of cells is equal to number of bytes, except for euc-jp when // the first byte is 0x8e. if (size <= 1 || (enc_dbcs == DBCS_JPNU && *p == 0x8e)) return 1; return MB_BYTE2LEN(*p); } /* * mb_char2cells() function pointer. * Return the number of display cells character "c" occupies. * Only takes care of multi-byte chars, not "^C" and such. */ int latin_char2cells(int c UNUSED) { return 1; } static int dbcs_char2cells(int c) { // Number of cells is equal to number of bytes, except for euc-jp when // the first byte is 0x8e. if (enc_dbcs == DBCS_JPNU && ((unsigned)c >> 8) == 0x8e) return 1; // use the first byte return MB_BYTE2LEN((unsigned)c >> 8); } /* * Return the number of cells occupied by string "p". * Stop at a NUL character. When "len" >= 0 stop at character "p[len]". */ int mb_string2cells(char_u *p, int len) { int i; int clen = 0; for (i = 0; (len < 0 || i < len) && p[i] != NUL; i += (*mb_ptr2len)(p + i)) clen += (*mb_ptr2cells)(p + i); return clen; } /* * mb_off2cells() function pointer. * Return number of display cells for char at ScreenLines[off]. * We make sure that the offset used is less than "max_off". */ int latin_off2cells(unsigned off UNUSED, unsigned max_off UNUSED) { return 1; } int dbcs_off2cells(unsigned off, unsigned max_off) { // never check beyond end of the line if (off >= max_off) return 1; // Number of cells is equal to number of bytes, except for euc-jp when // the first byte is 0x8e. if (enc_dbcs == DBCS_JPNU && ScreenLines[off] == 0x8e) return 1; return MB_BYTE2LEN(ScreenLines[off]); } int utf_off2cells(unsigned off, unsigned max_off) { return (off + 1 < max_off && ScreenLines[off + 1] == 0) ? 2 : 1; } /* * mb_ptr2char() function pointer. * Convert a byte sequence into a character. */ int latin_ptr2char(char_u *p) { return *p; } static int dbcs_ptr2char(char_u *p) { if (MB_BYTE2LEN(*p) > 1 && p[1] != NUL) return (p[0] << 8) + p[1]; return *p; } /* * Convert a UTF-8 byte sequence to a wide character. * If the sequence is illegal or truncated by a NUL the first byte is * returned. * For an overlong sequence this may return zero. * Does not include composing characters, of course. */ int utf_ptr2char(char_u *p) { int len; if (p[0] < 0x80) // be quick for ASCII return p[0]; len = utf8len_tab_zero[p[0]]; if (len > 1 && (p[1] & 0xc0) == 0x80) { if (len == 2) return ((p[0] & 0x1f) << 6) + (p[1] & 0x3f); if ((p[2] & 0xc0) == 0x80) { if (len == 3) return ((p[0] & 0x0f) << 12) + ((p[1] & 0x3f) << 6) + (p[2] & 0x3f); if ((p[3] & 0xc0) == 0x80) { if (len == 4) return ((p[0] & 0x07) << 18) + ((p[1] & 0x3f) << 12) + ((p[2] & 0x3f) << 6) + (p[3] & 0x3f); if ((p[4] & 0xc0) == 0x80) { if (len == 5) return ((p[0] & 0x03) << 24) + ((p[1] & 0x3f) << 18) + ((p[2] & 0x3f) << 12) + ((p[3] & 0x3f) << 6) + (p[4] & 0x3f); if ((p[5] & 0xc0) == 0x80 && len == 6) return ((p[0] & 0x01) << 30) + ((p[1] & 0x3f) << 24) + ((p[2] & 0x3f) << 18) + ((p[3] & 0x3f) << 12) + ((p[4] & 0x3f) << 6) + (p[5] & 0x3f); } } } } // Illegal value, just return the first byte return p[0]; } /* * Convert a UTF-8 byte sequence to a wide character. * String is assumed to be terminated by NUL or after "n" bytes, whichever * comes first. * The function is safe in the sense that it never accesses memory beyond the * first "n" bytes of "s". * * On success, returns decoded codepoint, advances "s" to the beginning of * next character and decreases "n" accordingly. * * If end of string was reached, returns 0 and, if "n" > 0, advances "s" past * NUL byte. * * If byte sequence is illegal or incomplete, returns -1 and does not advance * "s". */ static int utf_safe_read_char_adv(char_u **s, size_t *n) { int c, k; if (*n == 0) // end of buffer return 0; k = utf8len_tab_zero[**s]; if (k == 1) { // ASCII character or NUL (*n)--; return *(*s)++; } if ((size_t)k <= *n) { // We have a multibyte sequence and it isn't truncated by buffer // limits so utf_ptr2char() is safe to use. Or the first byte is // illegal (k=0), and it's also safe to use utf_ptr2char(). c = utf_ptr2char(*s); // On failure, utf_ptr2char() returns the first byte, so here we // check equality with the first byte. The only non-ASCII character // which equals the first byte of its own UTF-8 representation is // U+00C3 (UTF-8: 0xC3 0x83), so need to check that special case too. // It's safe even if n=1, else we would have k=2 > n. if (c != (int)(**s) || (c == 0xC3 && (*s)[1] == 0x83)) { // byte sequence was successfully decoded *s += k; *n -= k; return c; } } // byte sequence is incomplete or illegal return -1; } /* * Get character at **pp and advance *pp to the next character. * Note: composing characters are skipped! */ int mb_ptr2char_adv(char_u **pp) { int c; c = (*mb_ptr2char)(*pp); *pp += (*mb_ptr2len)(*pp); return c; } /* * Get character at **pp and advance *pp to the next character. * Note: composing characters are returned as separate characters. */ int mb_cptr2char_adv(char_u **pp) { int c; c = (*mb_ptr2char)(*pp); if (enc_utf8) *pp += utf_ptr2len(*pp); else *pp += (*mb_ptr2len)(*pp); return c; } #if defined(FEAT_ARABIC) || defined(PROTO) /* * Check if the character pointed to by "p2" is a composing character when it * comes after "p1". For Arabic sometimes "ab" is replaced with "c", which * behaves like a composing character. */ int utf_composinglike(char_u *p1, char_u *p2) { int c2; c2 = utf_ptr2char(p2); if (utf_iscomposing(c2)) return TRUE; if (!arabic_maycombine(c2)) return FALSE; return arabic_combine(utf_ptr2char(p1), c2); } #endif /* * Convert a UTF-8 byte string to a wide character. Also get up to MAX_MCO * composing characters. */ int utfc_ptr2char( char_u *p, int *pcc) // return: composing chars, last one is 0 { int len; int c; int cc; int i = 0; c = utf_ptr2char(p); len = utf_ptr2len(p); // Only accept a composing char when the first char isn't illegal. if ((len > 1 || *p < 0x80) && p[len] >= 0x80 && UTF_COMPOSINGLIKE(p, p + len)) { cc = utf_ptr2char(p + len); for (;;) { pcc[i++] = cc; if (i == MAX_MCO) break; len += utf_ptr2len(p + len); if (p[len] < 0x80 || !utf_iscomposing(cc = utf_ptr2char(p + len))) break; } } if (i < MAX_MCO) // last composing char must be 0 pcc[i] = 0; return c; } /* * Convert a UTF-8 byte string to a wide character. Also get up to MAX_MCO * composing characters. Use no more than p[maxlen]. */ int utfc_ptr2char_len( char_u *p, int *pcc, // return: composing chars, last one is 0 int maxlen) { int len; int c; int cc; int i = 0; c = utf_ptr2char(p); len = utf_ptr2len_len(p, maxlen); // Only accept a composing char when the first char isn't illegal. if ((len > 1 || *p < 0x80) && len < maxlen && p[len] >= 0x80 && UTF_COMPOSINGLIKE(p, p + len)) { cc = utf_ptr2char(p + len); for (;;) { pcc[i++] = cc; if (i == MAX_MCO) break; len += utf_ptr2len_len(p + len, maxlen - len); if (len >= maxlen || p[len] < 0x80 || !utf_iscomposing(cc = utf_ptr2char(p + len))) break; } } if (i < MAX_MCO) // last composing char must be 0 pcc[i] = 0; return c; } /* * Convert the character at screen position "off" to a sequence of bytes. * Includes the composing characters. * "buf" must at least have the length MB_MAXBYTES + 1. * Only to be used when ScreenLinesUC[off] != 0. * Returns the produced number of bytes. */ int utfc_char2bytes(int off, char_u *buf) { int len; int i; len = utf_char2bytes(ScreenLinesUC[off], buf); for (i = 0; i < Screen_mco; ++i) { if (ScreenLinesC[i][off] == 0) break; len += utf_char2bytes(ScreenLinesC[i][off], buf + len); } return len; } /* * Get the length of a UTF-8 byte sequence, not including any following * composing characters. * Returns 0 for "". * Returns 1 for an illegal byte sequence. */ int utf_ptr2len(char_u *p) { int len; int i; if (*p == NUL) return 0; len = utf8len_tab[*p]; for (i = 1; i < len; ++i) if ((p[i] & 0xc0) != 0x80) return 1; return len; } /* * Return length of UTF-8 character, obtained from the first byte. * "b" must be between 0 and 255! * Returns 1 for an invalid first byte value. */ int utf_byte2len(int b) { return utf8len_tab[b]; } /* * Get the length of UTF-8 byte sequence "p[size]". Does not include any * following composing characters. * Returns 1 for "". * Returns 1 for an illegal byte sequence (also in incomplete byte seq.). * Returns number > "size" for an incomplete byte sequence. * Never returns zero. */ int utf_ptr2len_len(char_u *p, int size) { int len; int i; int m; len = utf8len_tab[*p]; if (len == 1) return 1; // NUL, ascii or illegal lead byte if (len > size) m = size; // incomplete byte sequence. else m = len; for (i = 1; i < m; ++i) if ((p[i] & 0xc0) != 0x80) return 1; return len; } /* * Return the number of bytes the UTF-8 encoding of the character at "p" takes. * This includes following composing characters. */ int utfc_ptr2len(char_u *p) { int len; int b0 = *p; #ifdef FEAT_ARABIC int prevlen; #endif if (b0 == NUL) return 0; if (b0 < 0x80 && p[1] < 0x80) // be quick for ASCII return 1; // Skip over first UTF-8 char, stopping at a NUL byte. len = utf_ptr2len(p); // Check for illegal byte. if (len == 1 && b0 >= 0x80) return 1; /* * Check for composing characters. We can handle only the first six, but * skip all of them (otherwise the cursor would get stuck). */ #ifdef FEAT_ARABIC prevlen = 0; #endif for (;;) { if (p[len] < 0x80 || !UTF_COMPOSINGLIKE(p + prevlen, p + len)) return len; // Skip over composing char #ifdef FEAT_ARABIC prevlen = len; #endif len += utf_ptr2len(p + len); } } /* * Return the number of bytes the UTF-8 encoding of the character at "p[size]" * takes. This includes following composing characters. * Returns 0 for an empty string. * Returns 1 for an illegal char or an incomplete byte sequence. */ int utfc_ptr2len_len(char_u *p, int size) { int len; #ifdef FEAT_ARABIC int prevlen; #endif if (size < 1 || *p == NUL) return 0; if (p[0] < 0x80 && (size == 1 || p[1] < 0x80)) // be quick for ASCII return 1; // Skip over first UTF-8 char, stopping at a NUL byte. len = utf_ptr2len_len(p, size); // Check for illegal byte and incomplete byte sequence. if ((len == 1 && p[0] >= 0x80) || len > size) return 1; /* * Check for composing characters. We can handle only the first six, but * skip all of them (otherwise the cursor would get stuck). */ #ifdef FEAT_ARABIC prevlen = 0; #endif while (len < size) { int len_next_char; if (p[len] < 0x80) break; /* * Next character length should not go beyond size to ensure that * UTF_COMPOSINGLIKE(...) does not read beyond size. */ len_next_char = utf_ptr2len_len(p + len, size - len); if (len_next_char > size - len) break; if (!UTF_COMPOSINGLIKE(p + prevlen, p + len)) break; // Skip over composing char #ifdef FEAT_ARABIC prevlen = len; #endif len += len_next_char; } return len; } /* * Return the number of bytes the UTF-8 encoding of character "c" takes. * This does not include composing characters. */ int utf_char2len(int c) { if (c < 0x80) return 1; if (c < 0x800) return 2; if (c < 0x10000) return 3; if (c < 0x200000) return 4; if (c < 0x4000000) return 5; return 6; } /* * Convert Unicode character "c" to UTF-8 string in "buf[]". * Returns the number of bytes. */ int utf_char2bytes(int c, char_u *buf) { if (c < 0x80) // 7 bits { buf[0] = c; return 1; } if (c < 0x800) // 11 bits { buf[0] = 0xc0 + ((unsigned)c >> 6); buf[1] = 0x80 + (c & 0x3f); return 2; } if (c < 0x10000) // 16 bits { buf[0] = 0xe0 + ((unsigned)c >> 12); buf[1] = 0x80 + (((unsigned)c >> 6) & 0x3f); buf[2] = 0x80 + (c & 0x3f); return 3; } if (c < 0x200000) // 21 bits { buf[0] = 0xf0 + ((unsigned)c >> 18); buf[1] = 0x80 + (((unsigned)c >> 12) & 0x3f); buf[2] = 0x80 + (((unsigned)c >> 6) & 0x3f); buf[3] = 0x80 + (c & 0x3f); return 4; } if (c < 0x4000000) // 26 bits { buf[0] = 0xf8 + ((unsigned)c >> 24); buf[1] = 0x80 + (((unsigned)c >> 18) & 0x3f); buf[2] = 0x80 + (((unsigned)c >> 12) & 0x3f); buf[3] = 0x80 + (((unsigned)c >> 6) & 0x3f); buf[4] = 0x80 + (c & 0x3f); return 5; } // 31 bits buf[0] = 0xfc + ((unsigned)c >> 30); buf[1] = 0x80 + (((unsigned)c >> 24) & 0x3f); buf[2] = 0x80 + (((unsigned)c >> 18) & 0x3f); buf[3] = 0x80 + (((unsigned)c >> 12) & 0x3f); buf[4] = 0x80 + (((unsigned)c >> 6) & 0x3f); buf[5] = 0x80 + (c & 0x3f); return 6; } #if defined(FEAT_TERMINAL) || defined(PROTO) /* * utf_iscomposing() with different argument type for libvterm. */ int utf_iscomposing_uint(UINT32_T c) { return utf_iscomposing((int)c); } #endif /* * Return TRUE if "c" is a composing UTF-8 character. This means it will be * drawn on top of the preceding character. * Based on code from Markus Kuhn. */ int utf_iscomposing(int c) { // Sorted list of non-overlapping intervals. // Generated by ../runtime/tools/unicode.vim. static struct interval combining[] = { {0x0300, 0x036f}, {0x0483, 0x0489}, {0x0591, 0x05bd}, {0x05bf, 0x05bf}, {0x05c1, 0x05c2}, {0x05c4, 0x05c5}, {0x05c7, 0x05c7}, {0x0610, 0x061a}, {0x064b, 0x065f}, {0x0670, 0x0670}, {0x06d6, 0x06dc}, {0x06df, 0x06e4}, {0x06e7, 0x06e8}, {0x06ea, 0x06ed}, {0x0711, 0x0711}, {0x0730, 0x074a}, {0x07a6, 0x07b0}, {0x07eb, 0x07f3}, {0x07fd, 0x07fd}, {0x0816, 0x0819}, {0x081b, 0x0823}, {0x0825, 0x0827}, {0x0829, 0x082d}, {0x0859, 0x085b}, {0x08d3, 0x08e1}, {0x08e3, 0x0903}, {0x093a, 0x093c}, {0x093e, 0x094f}, {0x0951, 0x0957}, {0x0962, 0x0963}, {0x0981, 0x0983}, {0x09bc, 0x09bc}, {0x09be, 0x09c4}, {0x09c7, 0x09c8}, {0x09cb, 0x09cd}, {0x09d7, 0x09d7}, {0x09e2, 0x09e3}, {0x09fe, 0x09fe}, {0x0a01, 0x0a03}, {0x0a3c, 0x0a3c}, {0x0a3e, 0x0a42}, {0x0a47, 0x0a48}, {0x0a4b, 0x0a4d}, {0x0a51, 0x0a51}, {0x0a70, 0x0a71}, {0x0a75, 0x0a75}, {0x0a81, 0x0a83}, {0x0abc, 0x0abc}, {0x0abe, 0x0ac5}, {0x0ac7, 0x0ac9}, {0x0acb, 0x0acd}, {0x0ae2, 0x0ae3}, {0x0afa, 0x0aff}, {0x0b01, 0x0b03}, {0x0b3c, 0x0b3c}, {0x0b3e, 0x0b44}, {0x0b47, 0x0b48}, {0x0b4b, 0x0b4d}, {0x0b56, 0x0b57}, {0x0b62, 0x0b63}, {0x0b82, 0x0b82}, {0x0bbe, 0x0bc2}, {0x0bc6, 0x0bc8}, {0x0bca, 0x0bcd}, {0x0bd7, 0x0bd7}, {0x0c00, 0x0c04}, {0x0c3e, 0x0c44}, {0x0c46, 0x0c48}, {0x0c4a, 0x0c4d}, {0x0c55, 0x0c56}, {0x0c62, 0x0c63}, {0x0c81, 0x0c83}, {0x0cbc, 0x0cbc}, {0x0cbe, 0x0cc4}, {0x0cc6, 0x0cc8}, {0x0cca, 0x0ccd}, {0x0cd5, 0x0cd6}, {0x0ce2, 0x0ce3}, {0x0d00, 0x0d03}, {0x0d3b, 0x0d3c}, {0x0d3e, 0x0d44}, {0x0d46, 0x0d48}, {0x0d4a, 0x0d4d}, {0x0d57, 0x0d57}, {0x0d62, 0x0d63}, {0x0d82, 0x0d83}, {0x0dca, 0x0dca}, {0x0dcf, 0x0dd4}, {0x0dd6, 0x0dd6}, {0x0dd8, 0x0ddf}, {0x0df2, 0x0df3}, {0x0e31, 0x0e31}, {0x0e34, 0x0e3a}, {0x0e47, 0x0e4e}, {0x0eb1, 0x0eb1}, {0x0eb4, 0x0ebc}, {0x0ec8, 0x0ecd}, {0x0f18, 0x0f19}, {0x0f35, 0x0f35}, {0x0f37, 0x0f37}, {0x0f39, 0x0f39}, {0x0f3e, 0x0f3f}, {0x0f71, 0x0f84}, {0x0f86, 0x0f87}, {0x0f8d, 0x0f97}, {0x0f99, 0x0fbc}, {0x0fc6, 0x0fc6}, {0x102b, 0x103e}, {0x1056, 0x1059}, {0x105e, 0x1060}, {0x1062, 0x1064}, {0x1067, 0x106d}, {0x1071, 0x1074}, {0x1082, 0x108d}, {0x108f, 0x108f}, {0x109a, 0x109d}, {0x135d, 0x135f}, {0x1712, 0x1714}, {0x1732, 0x1734}, {0x1752, 0x1753}, {0x1772, 0x1773}, {0x17b4, 0x17d3}, {0x17dd, 0x17dd}, {0x180b, 0x180d}, {0x1885, 0x1886}, {0x18a9, 0x18a9}, {0x1920, 0x192b}, {0x1930, 0x193b}, {0x1a17, 0x1a1b}, {0x1a55, 0x1a5e}, {0x1a60, 0x1a7c}, {0x1a7f, 0x1a7f}, {0x1ab0, 0x1abe}, {0x1b00, 0x1b04}, {0x1b34, 0x1b44}, {0x1b6b, 0x1b73}, {0x1b80, 0x1b82}, {0x1ba1, 0x1bad}, {0x1be6, 0x1bf3}, {0x1c24, 0x1c37}, {0x1cd0, 0x1cd2}, {0x1cd4, 0x1ce8}, {0x1ced, 0x1ced}, {0x1cf4, 0x1cf4}, {0x1cf7, 0x1cf9}, {0x1dc0, 0x1df9}, {0x1dfb, 0x1dff}, {0x20d0, 0x20f0}, {0x2cef, 0x2cf1}, {0x2d7f, 0x2d7f}, {0x2de0, 0x2dff}, {0x302a, 0x302f}, {0x3099, 0x309a}, {0xa66f, 0xa672}, {0xa674, 0xa67d}, {0xa69e, 0xa69f}, {0xa6f0, 0xa6f1}, {0xa802, 0xa802}, {0xa806, 0xa806}, {0xa80b, 0xa80b}, {0xa823, 0xa827}, {0xa880, 0xa881}, {0xa8b4, 0xa8c5}, {0xa8e0, 0xa8f1}, {0xa8ff, 0xa8ff}, {0xa926, 0xa92d}, {0xa947, 0xa953}, {0xa980, 0xa983}, {0xa9b3, 0xa9c0}, {0xa9e5, 0xa9e5}, {0xaa29, 0xaa36}, {0xaa43, 0xaa43}, {0xaa4c, 0xaa4d}, {0xaa7b, 0xaa7d}, {0xaab0, 0xaab0}, {0xaab2, 0xaab4}, {0xaab7, 0xaab8}, {0xaabe, 0xaabf}, {0xaac1, 0xaac1}, {0xaaeb, 0xaaef}, {0xaaf5, 0xaaf6}, {0xabe3, 0xabea}, {0xabec, 0xabed}, {0xfb1e, 0xfb1e}, {0xfe00, 0xfe0f}, {0xfe20, 0xfe2f}, {0x101fd, 0x101fd}, {0x102e0, 0x102e0}, {0x10376, 0x1037a}, {0x10a01, 0x10a03}, {0x10a05, 0x10a06}, {0x10a0c, 0x10a0f}, {0x10a38, 0x10a3a}, {0x10a3f, 0x10a3f}, {0x10ae5, 0x10ae6}, {0x10d24, 0x10d27}, {0x10f46, 0x10f50}, {0x11000, 0x11002}, {0x11038, 0x11046}, {0x1107f, 0x11082}, {0x110b0, 0x110ba}, {0x11100, 0x11102}, {0x11127, 0x11134}, {0x11145, 0x11146}, {0x11173, 0x11173}, {0x11180, 0x11182}, {0x111b3, 0x111c0}, {0x111c9, 0x111cc}, {0x1122c, 0x11237}, {0x1123e, 0x1123e}, {0x112df, 0x112ea}, {0x11300, 0x11303}, {0x1133b, 0x1133c}, {0x1133e, 0x11344}, {0x11347, 0x11348}, {0x1134b, 0x1134d}, {0x11357, 0x11357}, {0x11362, 0x11363}, {0x11366, 0x1136c}, {0x11370, 0x11374}, {0x11435, 0x11446}, {0x1145e, 0x1145e}, {0x114b0, 0x114c3}, {0x115af, 0x115b5}, {0x115b8, 0x115c0}, {0x115dc, 0x115dd}, {0x11630, 0x11640}, {0x116ab, 0x116b7}, {0x1171d, 0x1172b}, {0x1182c, 0x1183a}, {0x119d1, 0x119d7}, {0x119da, 0x119e0}, {0x119e4, 0x119e4}, {0x11a01, 0x11a0a}, {0x11a33, 0x11a39}, {0x11a3b, 0x11a3e}, {0x11a47, 0x11a47}, {0x11a51, 0x11a5b}, {0x11a8a, 0x11a99}, {0x11c2f, 0x11c36}, {0x11c38, 0x11c3f}, {0x11c92, 0x11ca7}, {0x11ca9, 0x11cb6}, {0x11d31, 0x11d36}, {0x11d3a, 0x11d3a}, {0x11d3c, 0x11d3d}, {0x11d3f, 0x11d45}, {0x11d47, 0x11d47}, {0x11d8a, 0x11d8e}, {0x11d90, 0x11d91}, {0x11d93, 0x11d97}, {0x11ef3, 0x11ef6}, {0x16af0, 0x16af4}, {0x16b30, 0x16b36}, {0x16f4f, 0x16f4f}, {0x16f51, 0x16f87}, {0x16f8f, 0x16f92}, {0x1bc9d, 0x1bc9e}, {0x1d165, 0x1d169}, {0x1d16d, 0x1d172}, {0x1d17b, 0x1d182}, {0x1d185, 0x1d18b}, {0x1d1aa, 0x1d1ad}, {0x1d242, 0x1d244}, {0x1da00, 0x1da36}, {0x1da3b, 0x1da6c}, {0x1da75, 0x1da75}, {0x1da84, 0x1da84}, {0x1da9b, 0x1da9f}, {0x1daa1, 0x1daaf}, {0x1e000, 0x1e006}, {0x1e008, 0x1e018}, {0x1e01b, 0x1e021}, {0x1e023, 0x1e024}, {0x1e026, 0x1e02a}, {0x1e130, 0x1e136}, {0x1e2ec, 0x1e2ef}, {0x1e8d0, 0x1e8d6}, {0x1e944, 0x1e94a}, {0xe0100, 0xe01ef} }; return intable(combining, sizeof(combining), c); } /* * Return TRUE for characters that can be displayed in a normal way. * Only for characters of 0x100 and above! */ int utf_printable(int c) { #ifdef USE_WCHAR_FUNCTIONS /* * Assume the iswprint() library function works better than our own stuff. */ return iswprint(c); #else // Sorted list of non-overlapping intervals. // 0xd800-0xdfff is reserved for UTF-16, actually illegal. static struct interval nonprint[] = { {0x070f, 0x070f}, {0x180b, 0x180e}, {0x200b, 0x200f}, {0x202a, 0x202e}, {0x206a, 0x206f}, {0xd800, 0xdfff}, {0xfeff, 0xfeff}, {0xfff9, 0xfffb}, {0xfffe, 0xffff} }; return !intable(nonprint, sizeof(nonprint), c); #endif } // Sorted list of non-overlapping intervals of all Emoji characters, // based on http://unicode.org/emoji/charts/emoji-list.html static struct interval emoji_all[] = { {0x203c, 0x203c}, {0x2049, 0x2049}, {0x2122, 0x2122}, {0x2139, 0x2139}, {0x2194, 0x2199}, {0x21a9, 0x21aa}, {0x231a, 0x231b}, {0x2328, 0x2328}, {0x23cf, 0x23cf}, {0x23e9, 0x23f3}, {0x23f8, 0x23fa}, {0x24c2, 0x24c2}, {0x25aa, 0x25ab}, {0x25b6, 0x25b6}, {0x25c0, 0x25c0}, {0x25fb, 0x25fe}, {0x2600, 0x2604}, {0x260e, 0x260e}, {0x2611, 0x2611}, {0x2614, 0x2615}, {0x2618, 0x2618}, {0x261d, 0x261d}, {0x2620, 0x2620}, {0x2622, 0x2623}, {0x2626, 0x2626}, {0x262a, 0x262a}, {0x262e, 0x262f}, {0x2638, 0x263a}, {0x2640, 0x2640}, {0x2642, 0x2642}, {0x2648, 0x2653}, {0x265f, 0x2660}, {0x2663, 0x2663}, {0x2665, 0x2666}, {0x2668, 0x2668}, {0x267b, 0x267b}, {0x267e, 0x267f}, {0x2692, 0x2697}, {0x2699, 0x2699}, {0x269b, 0x269c}, {0x26a0, 0x26a1}, {0x26aa, 0x26ab}, {0x26b0, 0x26b1}, {0x26bd, 0x26be}, {0x26c4, 0x26c5}, {0x26c8, 0x26c8}, {0x26ce, 0x26cf}, {0x26d1, 0x26d1}, {0x26d3, 0x26d4}, {0x26e9, 0x26ea}, {0x26f0, 0x26f5}, {0x26f7, 0x26fa}, {0x26fd, 0x26fd}, {0x2702, 0x2702}, {0x2705, 0x2705}, {0x2708, 0x270d}, {0x270f, 0x270f}, {0x2712, 0x2712}, {0x2714, 0x2714}, {0x2716, 0x2716}, {0x271d, 0x271d}, {0x2721, 0x2721}, {0x2728, 0x2728}, {0x2733, 0x2734}, {0x2744, 0x2744}, {0x2747, 0x2747}, {0x274c, 0x274c}, {0x274e, 0x274e}, {0x2753, 0x2755}, {0x2757, 0x2757}, {0x2763, 0x2764}, {0x2795, 0x2797}, {0x27a1, 0x27a1}, {0x27b0, 0x27b0}, {0x27bf, 0x27bf}, {0x2934, 0x2935}, {0x2b05, 0x2b07}, {0x2b1b, 0x2b1c}, {0x2b50, 0x2b50}, {0x2b55, 0x2b55}, {0x3030, 0x3030}, {0x303d, 0x303d}, {0x3297, 0x3297}, {0x3299, 0x3299}, {0x1f004, 0x1f004}, {0x1f0cf, 0x1f0cf}, {0x1f170, 0x1f171}, {0x1f17e, 0x1f17f}, {0x1f18e, 0x1f18e}, {0x1f191, 0x1f19a}, {0x1f1e6, 0x1f1ff}, {0x1f201, 0x1f202}, {0x1f21a, 0x1f21a}, {0x1f22f, 0x1f22f}, {0x1f232, 0x1f23a}, {0x1f250, 0x1f251}, {0x1f300, 0x1f321}, {0x1f324, 0x1f393}, {0x1f396, 0x1f397}, {0x1f399, 0x1f39b}, {0x1f39e, 0x1f3f0}, {0x1f3f3, 0x1f3f5}, {0x1f3f7, 0x1f4fd}, {0x1f4ff, 0x1f53d}, {0x1f549, 0x1f54e}, {0x1f550, 0x1f567}, {0x1f56f, 0x1f570}, {0x1f573, 0x1f57a}, {0x1f587, 0x1f587}, {0x1f58a, 0x1f58d}, {0x1f590, 0x1f590}, {0x1f595, 0x1f596}, {0x1f5a4, 0x1f5a5}, {0x1f5a8, 0x1f5a8}, {0x1f5b1, 0x1f5b2}, {0x1f5bc, 0x1f5bc}, {0x1f5c2, 0x1f5c4}, {0x1f5d1, 0x1f5d3}, {0x1f5dc, 0x1f5de}, {0x1f5e1, 0x1f5e1}, {0x1f5e3, 0x1f5e3}, {0x1f5e8, 0x1f5e8}, {0x1f5ef, 0x1f5ef}, {0x1f5f3, 0x1f5f3}, {0x1f5fa, 0x1f64f}, {0x1f680, 0x1f6c5}, {0x1f6cb, 0x1f6d2}, {0x1f6e0, 0x1f6e5}, {0x1f6e9, 0x1f6e9}, {0x1f6eb, 0x1f6ec}, {0x1f6f0, 0x1f6f0}, {0x1f6f3, 0x1f6f9}, {0x1f910, 0x1f93a}, {0x1f93c, 0x1f93e}, {0x1f940, 0x1f945}, {0x1f947, 0x1f970}, {0x1f973, 0x1f976}, {0x1f97a, 0x1f97a}, {0x1f97c, 0x1f9a2}, {0x1f9b0, 0x1f9b9}, {0x1f9c0, 0x1f9c2}, {0x1f9d0, 0x1f9ff} }; /* * Get class of a Unicode character. * 0: white space * 1: punctuation * 2 or bigger: some class of word character. */ int utf_class(int c) { return utf_class_buf(c, curbuf); } int utf_class_buf(int c, buf_T *buf) { // sorted list of non-overlapping intervals static struct clinterval { unsigned int first; unsigned int last; unsigned int class; } classes[] = { {0x037e, 0x037e, 1}, // Greek question mark {0x0387, 0x0387, 1}, // Greek ano teleia {0x055a, 0x055f, 1}, // Armenian punctuation {0x0589, 0x0589, 1}, // Armenian full stop {0x05be, 0x05be, 1}, {0x05c0, 0x05c0, 1}, {0x05c3, 0x05c3, 1}, {0x05f3, 0x05f4, 1}, {0x060c, 0x060c, 1}, {0x061b, 0x061b, 1}, {0x061f, 0x061f, 1}, {0x066a, 0x066d, 1}, {0x06d4, 0x06d4, 1}, {0x0700, 0x070d, 1}, // Syriac punctuation {0x0964, 0x0965, 1}, {0x0970, 0x0970, 1}, {0x0df4, 0x0df4, 1}, {0x0e4f, 0x0e4f, 1}, {0x0e5a, 0x0e5b, 1}, {0x0f04, 0x0f12, 1}, {0x0f3a, 0x0f3d, 1}, {0x0f85, 0x0f85, 1}, {0x104a, 0x104f, 1}, // Myanmar punctuation {0x10fb, 0x10fb, 1}, // Georgian punctuation {0x1361, 0x1368, 1}, // Ethiopic punctuation {0x166d, 0x166e, 1}, // Canadian Syl. punctuation {0x1680, 0x1680, 0}, {0x169b, 0x169c, 1}, {0x16eb, 0x16ed, 1}, {0x1735, 0x1736, 1}, {0x17d4, 0x17dc, 1}, // Khmer punctuation {0x1800, 0x180a, 1}, // Mongolian punctuation {0x2000, 0x200b, 0}, // spaces {0x200c, 0x2027, 1}, // punctuation and symbols {0x2028, 0x2029, 0}, {0x202a, 0x202e, 1}, // punctuation and symbols {0x202f, 0x202f, 0}, {0x2030, 0x205e, 1}, // punctuation and symbols {0x205f, 0x205f, 0}, {0x2060, 0x27ff, 1}, // punctuation and symbols {0x2070, 0x207f, 0x2070}, // superscript {0x2080, 0x2094, 0x2080}, // subscript {0x20a0, 0x27ff, 1}, // all kinds of symbols {0x2800, 0x28ff, 0x2800}, // braille {0x2900, 0x2998, 1}, // arrows, brackets, etc. {0x29d8, 0x29db, 1}, {0x29fc, 0x29fd, 1}, {0x2e00, 0x2e7f, 1}, // supplemental punctuation {0x3000, 0x3000, 0}, // ideographic space {0x3001, 0x3020, 1}, // ideographic punctuation {0x3030, 0x3030, 1}, {0x303d, 0x303d, 1}, {0x3040, 0x309f, 0x3040}, // Hiragana {0x30a0, 0x30ff, 0x30a0}, // Katakana {0x3300, 0x9fff, 0x4e00}, // CJK Ideographs {0xac00, 0xd7a3, 0xac00}, // Hangul Syllables {0xf900, 0xfaff, 0x4e00}, // CJK Ideographs {0xfd3e, 0xfd3f, 1}, {0xfe30, 0xfe6b, 1}, // punctuation forms {0xff00, 0xff0f, 1}, // half/fullwidth ASCII {0xff1a, 0xff20, 1}, // half/fullwidth ASCII {0xff3b, 0xff40, 1}, // half/fullwidth ASCII {0xff5b, 0xff65, 1}, // half/fullwidth ASCII {0x1d000, 0x1d24f, 1}, // Musical notation {0x1d400, 0x1d7ff, 1}, // Mathematical Alphanumeric Symbols {0x1f000, 0x1f2ff, 1}, // Game pieces; enclosed characters {0x1f300, 0x1f9ff, 1}, // Many symbol blocks {0x20000, 0x2a6df, 0x4e00}, // CJK Ideographs {0x2a700, 0x2b73f, 0x4e00}, // CJK Ideographs {0x2b740, 0x2b81f, 0x4e00}, // CJK Ideographs {0x2f800, 0x2fa1f, 0x4e00}, // CJK Ideographs }; int bot = 0; int top = sizeof(classes) / sizeof(struct clinterval) - 1; int mid; // First quick check for Latin1 characters, use 'iskeyword'. if (c < 0x100) { if (c == ' ' || c == '\t' || c == NUL || c == 0xa0) return 0; // blank if (vim_iswordc_buf(c, buf)) return 2; // word character return 1; // punctuation } // binary search in table while (top >= bot) { mid = (bot + top) / 2; if (classes[mid].last < (unsigned int)c) bot = mid + 1; else if (classes[mid].first > (unsigned int)c) top = mid - 1; else return (int)classes[mid].class; } // emoji if (intable(emoji_all, sizeof(emoji_all), c)) return 3; // most other characters are "word" characters return 2; } int utf_ambiguous_width(int c) { return c >= 0x80 && (intable(ambiguous, sizeof(ambiguous), c) || intable(emoji_all, sizeof(emoji_all), c)); } /* * Code for Unicode case-dependent operations. Based on notes in * http://www.unicode.org/Public/UNIDATA/CaseFolding.txt * This code uses simple case folding, not full case folding. * Last updated for Unicode 5.2. */ /* * The following tables are built by ../runtime/tools/unicode.vim. * They must be in numeric order, because we use binary search. * An entry such as {0x41,0x5a,1,32} means that Unicode characters in the * range from 0x41 to 0x5a inclusive, stepping by 1, are changed to * folded/upper/lower by adding 32. */ typedef struct { int rangeStart; int rangeEnd; int step; int offset; } convertStruct; static convertStruct foldCase[] = { {0x41,0x5a,1,32}, {0xb5,0xb5,-1,775}, {0xc0,0xd6,1,32}, {0xd8,0xde,1,32}, {0x100,0x12e,2,1}, {0x132,0x136,2,1}, {0x139,0x147,2,1}, {0x14a,0x176,2,1}, {0x178,0x178,-1,-121}, {0x179,0x17d,2,1}, {0x17f,0x17f,-1,-268}, {0x181,0x181,-1,210}, {0x182,0x184,2,1}, {0x186,0x186,-1,206}, {0x187,0x187,-1,1}, {0x189,0x18a,1,205}, {0x18b,0x18b,-1,1}, {0x18e,0x18e,-1,79}, {0x18f,0x18f,-1,202}, {0x190,0x190,-1,203}, {0x191,0x191,-1,1}, {0x193,0x193,-1,205}, {0x194,0x194,-1,207}, {0x196,0x196,-1,211}, {0x197,0x197,-1,209}, {0x198,0x198,-1,1}, {0x19c,0x19c,-1,211}, {0x19d,0x19d,-1,213}, {0x19f,0x19f,-1,214}, {0x1a0,0x1a4,2,1}, {0x1a6,0x1a6,-1,218}, {0x1a7,0x1a7,-1,1}, {0x1a9,0x1a9,-1,218}, {0x1ac,0x1ac,-1,1}, {0x1ae,0x1ae,-1,218}, {0x1af,0x1af,-1,1}, {0x1b1,0x1b2,1,217}, {0x1b3,0x1b5,2,1}, {0x1b7,0x1b7,-1,219}, {0x1b8,0x1bc,4,1}, {0x1c4,0x1c4,-1,2}, {0x1c5,0x1c5,-1,1}, {0x1c7,0x1c7,-1,2}, {0x1c8,0x1c8,-1,1}, {0x1ca,0x1ca,-1,2}, {0x1cb,0x1db,2,1}, {0x1de,0x1ee,2,1}, {0x1f1,0x1f1,-1,2}, {0x1f2,0x1f4,2,1}, {0x1f6,0x1f6,-1,-97}, {0x1f7,0x1f7,-1,-56}, {0x1f8,0x21e,2,1}, {0x220,0x220,-1,-130}, {0x222,0x232,2,1}, {0x23a,0x23a,-1,10795}, {0x23b,0x23b,-1,1}, {0x23d,0x23d,-1,-163}, {0x23e,0x23e,-1,10792}, {0x241,0x241,-1,1}, {0x243,0x243,-1,-195}, {0x244,0x244,-1,69}, {0x245,0x245,-1,71}, {0x246,0x24e,2,1}, {0x345,0x345,-1,116}, {0x370,0x372,2,1}, {0x376,0x376,-1,1}, {0x37f,0x37f,-1,116}, {0x386,0x386,-1,38}, {0x388,0x38a,1,37}, {0x38c,0x38c,-1,64}, {0x38e,0x38f,1,63}, {0x391,0x3a1,1,32}, {0x3a3,0x3ab,1,32}, {0x3c2,0x3c2,-1,1}, {0x3cf,0x3cf,-1,8}, {0x3d0,0x3d0,-1,-30}, {0x3d1,0x3d1,-1,-25}, {0x3d5,0x3d5,-1,-15}, {0x3d6,0x3d6,-1,-22}, {0x3d8,0x3ee,2,1}, {0x3f0,0x3f0,-1,-54}, {0x3f1,0x3f1,-1,-48}, {0x3f4,0x3f4,-1,-60}, {0x3f5,0x3f5,-1,-64}, {0x3f7,0x3f7,-1,1}, {0x3f9,0x3f9,-1,-7}, {0x3fa,0x3fa,-1,1}, {0x3fd,0x3ff,1,-130}, {0x400,0x40f,1,80}, {0x410,0x42f,1,32}, {0x460,0x480,2,1}, {0x48a,0x4be,2,1}, {0x4c0,0x4c0,-1,15}, {0x4c1,0x4cd,2,1}, {0x4d0,0x52e,2,1}, {0x531,0x556,1,48}, {0x10a0,0x10c5,1,7264}, {0x10c7,0x10cd,6,7264}, {0x13f8,0x13fd,1,-8}, {0x1c80,0x1c80,-1,-6222}, {0x1c81,0x1c81,-1,-6221}, {0x1c82,0x1c82,-1,-6212}, {0x1c83,0x1c84,1,-6210}, {0x1c85,0x1c85,-1,-6211}, {0x1c86,0x1c86,-1,-6204}, {0x1c87,0x1c87,-1,-6180}, {0x1c88,0x1c88,-1,35267}, {0x1c90,0x1cba,1,-3008}, {0x1cbd,0x1cbf,1,-3008}, {0x1e00,0x1e94,2,1}, {0x1e9b,0x1e9b,-1,-58}, {0x1e9e,0x1e9e,-1,-7615}, {0x1ea0,0x1efe,2,1}, {0x1f08,0x1f0f,1,-8}, {0x1f18,0x1f1d,1,-8}, {0x1f28,0x1f2f,1,-8}, {0x1f38,0x1f3f,1,-8}, {0x1f48,0x1f4d,1,-8}, {0x1f59,0x1f5f,2,-8}, {0x1f68,0x1f6f,1,-8}, {0x1f88,0x1f8f,1,-8}, {0x1f98,0x1f9f,1,-8}, {0x1fa8,0x1faf,1,-8}, {0x1fb8,0x1fb9,1,-8}, {0x1fba,0x1fbb,1,-74}, {0x1fbc,0x1fbc,-1,-9}, {0x1fbe,0x1fbe,-1,-7173}, {0x1fc8,0x1fcb,1,-86}, {0x1fcc,0x1fcc,-1,-9}, {0x1fd8,0x1fd9,1,-8}, {0x1fda,0x1fdb,1,-100}, {0x1fe8,0x1fe9,1,-8}, {0x1fea,0x1feb,1,-112}, {0x1fec,0x1fec,-1,-7}, {0x1ff8,0x1ff9,1,-128}, {0x1ffa,0x1ffb,1,-126}, {0x1ffc,0x1ffc,-1,-9}, {0x2126,0x2126,-1,-7517}, {0x212a,0x212a,-1,-8383}, {0x212b,0x212b,-1,-8262}, {0x2132,0x2132,-1,28}, {0x2160,0x216f,1,16}, {0x2183,0x2183,-1,1}, {0x24b6,0x24cf,1,26}, {0x2c00,0x2c2e,1,48}, {0x2c60,0x2c60,-1,1}, {0x2c62,0x2c62,-1,-10743}, {0x2c63,0x2c63,-1,-3814}, {0x2c64,0x2c64,-1,-10727}, {0x2c67,0x2c6b,2,1}, {0x2c6d,0x2c6d,-1,-10780}, {0x2c6e,0x2c6e,-1,-10749}, {0x2c6f,0x2c6f,-1,-10783}, {0x2c70,0x2c70,-1,-10782}, {0x2c72,0x2c75,3,1}, {0x2c7e,0x2c7f,1,-10815}, {0x2c80,0x2ce2,2,1}, {0x2ceb,0x2ced,2,1}, {0x2cf2,0xa640,31054,1}, {0xa642,0xa66c,2,1}, {0xa680,0xa69a,2,1}, {0xa722,0xa72e,2,1}, {0xa732,0xa76e,2,1}, {0xa779,0xa77b,2,1}, {0xa77d,0xa77d,-1,-35332}, {0xa77e,0xa786,2,1}, {0xa78b,0xa78b,-1,1}, {0xa78d,0xa78d,-1,-42280}, {0xa790,0xa792,2,1}, {0xa796,0xa7a8,2,1}, {0xa7aa,0xa7aa,-1,-42308}, {0xa7ab,0xa7ab,-1,-42319}, {0xa7ac,0xa7ac,-1,-42315}, {0xa7ad,0xa7ad,-1,-42305}, {0xa7ae,0xa7ae,-1,-42308}, {0xa7b0,0xa7b0,-1,-42258}, {0xa7b1,0xa7b1,-1,-42282}, {0xa7b2,0xa7b2,-1,-42261}, {0xa7b3,0xa7b3,-1,928}, {0xa7b4,0xa7be,2,1}, {0xa7c2,0xa7c2,-1,1}, {0xa7c4,0xa7c4,-1,-48}, {0xa7c5,0xa7c5,-1,-42307}, {0xa7c6,0xa7c6,-1,-35384}, {0xab70,0xabbf,1,-38864}, {0xff21,0xff3a,1,32}, {0x10400,0x10427,1,40}, {0x104b0,0x104d3,1,40}, {0x10c80,0x10cb2,1,64}, {0x118a0,0x118bf,1,32}, {0x16e40,0x16e5f,1,32}, {0x1e900,0x1e921,1,34} }; /* * Generic conversion function for case operations. * Return the converted equivalent of "a", which is a UCS-4 character. Use * the given conversion "table". Uses binary search on "table". */ static int utf_convert( int a, convertStruct table[], int tableSize) { int start, mid, end; // indices into table int entries = tableSize / sizeof(convertStruct); start = 0; end = entries; while (start < end) { // need to search further mid = (end + start) / 2; if (table[mid].rangeEnd < a) start = mid + 1; else end = mid; } if (start < entries && table[start].rangeStart <= a && a <= table[start].rangeEnd && (a - table[start].rangeStart) % table[start].step == 0) return (a + table[start].offset); else return a; } /* * Return the folded-case equivalent of "a", which is a UCS-4 character. Uses * simple case folding. */ int utf_fold(int a) { if (a < 0x80) // be fast for ASCII return a >= 0x41 && a <= 0x5a ? a + 32 : a; return utf_convert(a, foldCase, (int)sizeof(foldCase)); } static convertStruct toLower[] = { {0x41,0x5a,1,32}, {0xc0,0xd6,1,32}, {0xd8,0xde,1,32}, {0x100,0x12e,2,1}, {0x130,0x130,-1,-199}, {0x132,0x136,2,1}, {0x139,0x147,2,1}, {0x14a,0x176,2,1}, {0x178,0x178,-1,-121}, {0x179,0x17d,2,1}, {0x181,0x181,-1,210}, {0x182,0x184,2,1}, {0x186,0x186,-1,206}, {0x187,0x187,-1,1}, {0x189,0x18a,1,205}, {0x18b,0x18b,-1,1}, {0x18e,0x18e,-1,79}, {0x18f,0x18f,-1,202}, {0x190,0x190,-1,203}, {0x191,0x191,-1,1}, {0x193,0x193,-1,205}, {0x194,0x194,-1,207}, {0x196,0x196,-1,211}, {0x197,0x197,-1,209}, {0x198,0x198,-1,1}, {0x19c,0x19c,-1,211}, {0x19d,0x19d,-1,213}, {0x19f,0x19f,-1,214}, {0x1a0,0x1a4,2,1}, {0x1a6,0x1a6,-1,218}, {0x1a7,0x1a7,-1,1}, {0x1a9,0x1a9,-1,218}, {0x1ac,0x1ac,-1,1}, {0x1ae,0x1ae,-1,218}, {0x1af,0x1af,-1,1}, {0x1b1,0x1b2,1,217}, {0x1b3,0x1b5,2,1}, {0x1b7,0x1b7,-1,219}, {0x1b8,0x1bc,4,1}, {0x1c4,0x1c4,-1,2}, {0x1c5,0x1c5,-1,1}, {0x1c7,0x1c7,-1,2}, {0x1c8,0x1c8,-1,1}, {0x1ca,0x1ca,-1,2}, {0x1cb,0x1db,2,1}, {0x1de,0x1ee,2,1}, {0x1f1,0x1f1,-1,2}, {0x1f2,0x1f4,2,1}, {0x1f6,0x1f6,-1,-97}, {0x1f7,0x1f7,-1,-56}, {0x1f8,0x21e,2,1}, {0x220,0x220,-1,-130}, {0x222,0x232,2,1}, {0x23a,0x23a,-1,10795}, {0x23b,0x23b,-1,1}, {0x23d,0x23d,-1,-163}, {0x23e,0x23e,-1,10792}, {0x241,0x241,-1,1}, {0x243,0x243,-1,-195}, {0x244,0x244,-1,69}, {0x245,0x245,-1,71}, {0x246,0x24e,2,1}, {0x370,0x372,2,1}, {0x376,0x376,-1,1}, {0x37f,0x37f,-1,116}, {0x386,0x386,-1,38}, {0x388,0x38a,1,37}, {0x38c,0x38c,-1,64}, {0x38e,0x38f,1,63}, {0x391,0x3a1,1,32}, {0x3a3,0x3ab,1,32}, {0x3cf,0x3cf,-1,8}, {0x3d8,0x3ee,2,1}, {0x3f4,0x3f4,-1,-60}, {0x3f7,0x3f7,-1,1}, {0x3f9,0x3f9,-1,-7}, {0x3fa,0x3fa,-1,1}, {0x3fd,0x3ff,1,-130}, {0x400,0x40f,1,80}, {0x410,0x42f,1,32}, {0x460,0x480,2,1}, {0x48a,0x4be,2,1}, {0x4c0,0x4c0,-1,15}, {0x4c1,0x4cd,2,1}, {0x4d0,0x52e,2,1}, {0x531,0x556,1,48}, {0x10a0,0x10c5,1,7264}, {0x10c7,0x10cd,6,7264}, {0x13a0,0x13ef,1,38864}, {0x13f0,0x13f5,1,8}, {0x1c90,0x1cba,1,-3008}, {0x1cbd,0x1cbf,1,-3008}, {0x1e00,0x1e94,2,1}, {0x1e9e,0x1e9e,-1,-7615}, {0x1ea0,0x1efe,2,1}, {0x1f08,0x1f0f,1,-8}, {0x1f18,0x1f1d,1,-8}, {0x1f28,0x1f2f,1,-8}, {0x1f38,0x1f3f,1,-8}, {0x1f48,0x1f4d,1,-8}, {0x1f59,0x1f5f,2,-8}, {0x1f68,0x1f6f,1,-8}, {0x1f88,0x1f8f,1,-8}, {0x1f98,0x1f9f,1,-8}, {0x1fa8,0x1faf,1,-8}, {0x1fb8,0x1fb9,1,-8}, {0x1fba,0x1fbb,1,-74}, {0x1fbc,0x1fbc,-1,-9}, {0x1fc8,0x1fcb,1,-86}, {0x1fcc,0x1fcc,-1,-9}, {0x1fd8,0x1fd9,1,-8}, {0x1fda,0x1fdb,1,-100}, {0x1fe8,0x1fe9,1,-8}, {0x1fea,0x1feb,1,-112}, {0x1fec,0x1fec,-1,-7}, {0x1ff8,0x1ff9,1,-128}, {0x1ffa,0x1ffb,1,-126}, {0x1ffc,0x1ffc,-1,-9}, {0x2126,0x2126,-1,-7517}, {0x212a,0x212a,-1,-8383}, {0x212b,0x212b,-1,-8262}, {0x2132,0x2132,-1,28}, {0x2160,0x216f,1,16}, {0x2183,0x2183,-1,1}, {0x24b6,0x24cf,1,26}, {0x2c00,0x2c2e,1,48}, {0x2c60,0x2c60,-1,1}, {0x2c62,0x2c62,-1,-10743}, {0x2c63,0x2c63,-1,-3814}, {0x2c64,0x2c64,-1,-10727}, {0x2c67,0x2c6b,2,1}, {0x2c6d,0x2c6d,-1,-10780}, {0x2c6e,0x2c6e,-1,-10749}, {0x2c6f,0x2c6f,-1,-10783}, {0x2c70,0x2c70,-1,-10782}, {0x2c72,0x2c75,3,1}, {0x2c7e,0x2c7f,1,-10815}, {0x2c80,0x2ce2,2,1}, {0x2ceb,0x2ced,2,1}, {0x2cf2,0xa640,31054,1}, {0xa642,0xa66c,2,1}, {0xa680,0xa69a,2,1}, {0xa722,0xa72e,2,1}, {0xa732,0xa76e,2,1}, {0xa779,0xa77b,2,1}, {0xa77d,0xa77d,-1,-35332}, {0xa77e,0xa786,2,1}, {0xa78b,0xa78b,-1,1}, {0xa78d,0xa78d,-1,-42280}, {0xa790,0xa792,2,1}, {0xa796,0xa7a8,2,1}, {0xa7aa,0xa7aa,-1,-42308}, {0xa7ab,0xa7ab,-1,-42319}, {0xa7ac,0xa7ac,-1,-42315}, {0xa7ad,0xa7ad,-1,-42305}, {0xa7ae,0xa7ae,-1,-42308}, {0xa7b0,0xa7b0,-1,-42258}, {0xa7b1,0xa7b1,-1,-42282}, {0xa7b2,0xa7b2,-1,-42261}, {0xa7b3,0xa7b3,-1,928}, {0xa7b4,0xa7be,2,1}, {0xa7c2,0xa7c2,-1,1}, {0xa7c4,0xa7c4,-1,-48}, {0xa7c5,0xa7c5,-1,-42307}, {0xa7c6,0xa7c6,-1,-35384}, {0xff21,0xff3a,1,32}, {0x10400,0x10427,1,40}, {0x104b0,0x104d3,1,40}, {0x10c80,0x10cb2,1,64}, {0x118a0,0x118bf,1,32}, {0x16e40,0x16e5f,1,32}, {0x1e900,0x1e921,1,34} }; static convertStruct toUpper[] = { {0x61,0x7a,1,-32}, {0xb5,0xb5,-1,743}, {0xe0,0xf6,1,-32}, {0xf8,0xfe,1,-32}, {0xff,0xff,-1,121}, {0x101,0x12f,2,-1}, {0x131,0x131,-1,-232}, {0x133,0x137,2,-1}, {0x13a,0x148,2,-1}, {0x14b,0x177,2,-1}, {0x17a,0x17e,2,-1}, {0x17f,0x17f,-1,-300}, {0x180,0x180,-1,195}, {0x183,0x185,2,-1}, {0x188,0x18c,4,-1}, {0x192,0x192,-1,-1}, {0x195,0x195,-1,97}, {0x199,0x199,-1,-1}, {0x19a,0x19a,-1,163}, {0x19e,0x19e,-1,130}, {0x1a1,0x1a5,2,-1}, {0x1a8,0x1ad,5,-1}, {0x1b0,0x1b4,4,-1}, {0x1b6,0x1b9,3,-1}, {0x1bd,0x1bd,-1,-1}, {0x1bf,0x1bf,-1,56}, {0x1c5,0x1c5,-1,-1}, {0x1c6,0x1c6,-1,-2}, {0x1c8,0x1c8,-1,-1}, {0x1c9,0x1c9,-1,-2}, {0x1cb,0x1cb,-1,-1}, {0x1cc,0x1cc,-1,-2}, {0x1ce,0x1dc,2,-1}, {0x1dd,0x1dd,-1,-79}, {0x1df,0x1ef,2,-1}, {0x1f2,0x1f2,-1,-1}, {0x1f3,0x1f3,-1,-2}, {0x1f5,0x1f9,4,-1}, {0x1fb,0x21f,2,-1}, {0x223,0x233,2,-1}, {0x23c,0x23c,-1,-1}, {0x23f,0x240,1,10815}, {0x242,0x247,5,-1}, {0x249,0x24f,2,-1}, {0x250,0x250,-1,10783}, {0x251,0x251,-1,10780}, {0x252,0x252,-1,10782}, {0x253,0x253,-1,-210}, {0x254,0x254,-1,-206}, {0x256,0x257,1,-205}, {0x259,0x259,-1,-202}, {0x25b,0x25b,-1,-203}, {0x25c,0x25c,-1,42319}, {0x260,0x260,-1,-205}, {0x261,0x261,-1,42315}, {0x263,0x263,-1,-207}, {0x265,0x265,-1,42280}, {0x266,0x266,-1,42308}, {0x268,0x268,-1,-209}, {0x269,0x269,-1,-211}, {0x26a,0x26a,-1,42308}, {0x26b,0x26b,-1,10743}, {0x26c,0x26c,-1,42305}, {0x26f,0x26f,-1,-211}, {0x271,0x271,-1,10749}, {0x272,0x272,-1,-213}, {0x275,0x275,-1,-214}, {0x27d,0x27d,-1,10727}, {0x280,0x280,-1,-218}, {0x282,0x282,-1,42307}, {0x283,0x283,-1,-218}, {0x287,0x287,-1,42282}, {0x288,0x288,-1,-218}, {0x289,0x289,-1,-69}, {0x28a,0x28b,1,-217}, {0x28c,0x28c,-1,-71}, {0x292,0x292,-1,-219}, {0x29d,0x29d,-1,42261}, {0x29e,0x29e,-1,42258}, {0x345,0x345,-1,84}, {0x371,0x373,2,-1}, {0x377,0x377,-1,-1}, {0x37b,0x37d,1,130}, {0x3ac,0x3ac,-1,-38}, {0x3ad,0x3af,1,-37}, {0x3b1,0x3c1,1,-32}, {0x3c2,0x3c2,-1,-31}, {0x3c3,0x3cb,1,-32}, {0x3cc,0x3cc,-1,-64}, {0x3cd,0x3ce,1,-63}, {0x3d0,0x3d0,-1,-62}, {0x3d1,0x3d1,-1,-57}, {0x3d5,0x3d5,-1,-47}, {0x3d6,0x3d6,-1,-54}, {0x3d7,0x3d7,-1,-8}, {0x3d9,0x3ef,2,-1}, {0x3f0,0x3f0,-1,-86}, {0x3f1,0x3f1,-1,-80}, {0x3f2,0x3f2,-1,7}, {0x3f3,0x3f3,-1,-116}, {0x3f5,0x3f5,-1,-96}, {0x3f8,0x3fb,3,-1}, {0x430,0x44f,1,-32}, {0x450,0x45f,1,-80}, {0x461,0x481,2,-1}, {0x48b,0x4bf,2,-1}, {0x4c2,0x4ce,2,-1}, {0x4cf,0x4cf,-1,-15}, {0x4d1,0x52f,2,-1}, {0x561,0x586,1,-48}, {0x10d0,0x10fa,1,3008}, {0x10fd,0x10ff,1,3008}, {0x13f8,0x13fd,1,-8}, {0x1c80,0x1c80,-1,-6254}, {0x1c81,0x1c81,-1,-6253}, {0x1c82,0x1c82,-1,-6244}, {0x1c83,0x1c84,1,-6242}, {0x1c85,0x1c85,-1,-6243}, {0x1c86,0x1c86,-1,-6236}, {0x1c87,0x1c87,-1,-6181}, {0x1c88,0x1c88,-1,35266}, {0x1d79,0x1d79,-1,35332}, {0x1d7d,0x1d7d,-1,3814}, {0x1d8e,0x1d8e,-1,35384}, {0x1e01,0x1e95,2,-1}, {0x1e9b,0x1e9b,-1,-59}, {0x1ea1,0x1eff,2,-1}, {0x1f00,0x1f07,1,8}, {0x1f10,0x1f15,1,8}, {0x1f20,0x1f27,1,8}, {0x1f30,0x1f37,1,8}, {0x1f40,0x1f45,1,8}, {0x1f51,0x1f57,2,8}, {0x1f60,0x1f67,1,8}, {0x1f70,0x1f71,1,74}, {0x1f72,0x1f75,1,86}, {0x1f76,0x1f77,1,100}, {0x1f78,0x1f79,1,128}, {0x1f7a,0x1f7b,1,112}, {0x1f7c,0x1f7d,1,126}, {0x1f80,0x1f87,1,8}, {0x1f90,0x1f97,1,8}, {0x1fa0,0x1fa7,1,8}, {0x1fb0,0x1fb1,1,8}, {0x1fb3,0x1fb3,-1,9}, {0x1fbe,0x1fbe,-1,-7205}, {0x1fc3,0x1fc3,-1,9}, {0x1fd0,0x1fd1,1,8}, {0x1fe0,0x1fe1,1,8}, {0x1fe5,0x1fe5,-1,7}, {0x1ff3,0x1ff3,-1,9}, {0x214e,0x214e,-1,-28}, {0x2170,0x217f,1,-16}, {0x2184,0x2184,-1,-1}, {0x24d0,0x24e9,1,-26}, {0x2c30,0x2c5e,1,-48}, {0x2c61,0x2c61,-1,-1}, {0x2c65,0x2c65,-1,-10795}, {0x2c66,0x2c66,-1,-10792}, {0x2c68,0x2c6c,2,-1}, {0x2c73,0x2c76,3,-1}, {0x2c81,0x2ce3,2,-1}, {0x2cec,0x2cee,2,-1}, {0x2cf3,0x2cf3,-1,-1}, {0x2d00,0x2d25,1,-7264}, {0x2d27,0x2d2d,6,-7264}, {0xa641,0xa66d,2,-1}, {0xa681,0xa69b,2,-1}, {0xa723,0xa72f,2,-1}, {0xa733,0xa76f,2,-1}, {0xa77a,0xa77c,2,-1}, {0xa77f,0xa787,2,-1}, {0xa78c,0xa791,5,-1}, {0xa793,0xa793,-1,-1}, {0xa794,0xa794,-1,48}, {0xa797,0xa7a9,2,-1}, {0xa7b5,0xa7bf,2,-1}, {0xa7c3,0xa7c3,-1,-1}, {0xab53,0xab53,-1,-928}, {0xab70,0xabbf,1,-38864}, {0xff41,0xff5a,1,-32}, {0x10428,0x1044f,1,-40}, {0x104d8,0x104fb,1,-40}, {0x10cc0,0x10cf2,1,-64}, {0x118c0,0x118df,1,-32}, {0x16e60,0x16e7f,1,-32}, {0x1e922,0x1e943,1,-34} }; /* * Return the upper-case equivalent of "a", which is a UCS-4 character. Use * simple case folding. */ int utf_toupper(int a) { // If 'casemap' contains "keepascii" use ASCII style toupper(). if (a < 128 && (cmp_flags & CMP_KEEPASCII)) return TOUPPER_ASC(a); #if defined(HAVE_TOWUPPER) && defined(__STDC_ISO_10646__) // If towupper() is available and handles Unicode, use it. if (!(cmp_flags & CMP_INTERNAL)) return towupper(a); #endif // For characters below 128 use locale sensitive toupper(). if (a < 128) return TOUPPER_LOC(a); // For any other characters use the above mapping table. return utf_convert(a, toUpper, (int)sizeof(toUpper)); } int utf_islower(int a) { // German sharp s is lower case but has no upper case equivalent. return (utf_toupper(a) != a) || a == 0xdf; } /* * Return the lower-case equivalent of "a", which is a UCS-4 character. Use * simple case folding. */ int utf_tolower(int a) { // If 'casemap' contains "keepascii" use ASCII style tolower(). if (a < 128 && (cmp_flags & CMP_KEEPASCII)) return TOLOWER_ASC(a); #if defined(HAVE_TOWLOWER) && defined(__STDC_ISO_10646__) // If towlower() is available and handles Unicode, use it. if (!(cmp_flags & CMP_INTERNAL)) return towlower(a); #endif // For characters below 128 use locale sensitive tolower(). if (a < 128) return TOLOWER_LOC(a); // For any other characters use the above mapping table. return utf_convert(a, toLower, (int)sizeof(toLower)); } int utf_isupper(int a) { return (utf_tolower(a) != a); } static int utf_strnicmp( char_u *s1, char_u *s2, size_t n1, size_t n2) { int c1, c2, cdiff; char_u buffer[6]; for (;;) { c1 = utf_safe_read_char_adv(&s1, &n1); c2 = utf_safe_read_char_adv(&s2, &n2); if (c1 <= 0 || c2 <= 0) break; if (c1 == c2) continue; cdiff = utf_fold(c1) - utf_fold(c2); if (cdiff != 0) return cdiff; } // some string ended or has an incomplete/illegal character sequence if (c1 == 0 || c2 == 0) { // some string ended. shorter string is smaller if (c1 == 0 && c2 == 0) return 0; return c1 == 0 ? -1 : 1; } // Continue with bytewise comparison to produce some result that // would make comparison operations involving this function transitive. // // If only one string had an error, comparison should be made with // folded version of the other string. In this case it is enough // to fold just one character to determine the result of comparison. if (c1 != -1 && c2 == -1) { n1 = utf_char2bytes(utf_fold(c1), buffer); s1 = buffer; } else if (c2 != -1 && c1 == -1) { n2 = utf_char2bytes(utf_fold(c2), buffer); s2 = buffer; } while (n1 > 0 && n2 > 0 && *s1 != NUL && *s2 != NUL) { cdiff = (int)(*s1) - (int)(*s2); if (cdiff != 0) return cdiff; s1++; s2++; n1--; n2--; } if (n1 > 0 && *s1 == NUL) n1 = 0; if (n2 > 0 && *s2 == NUL) n2 = 0; if (n1 == 0 && n2 == 0) return 0; return n1 == 0 ? -1 : 1; } /* * Version of strnicmp() that handles multi-byte characters. * Needed for Big5, Shift-JIS and UTF-8 encoding. Other DBCS encodings can * probably use strnicmp(), because there are no ASCII characters in the * second byte. * Returns zero if s1 and s2 are equal (ignoring case), the difference between * two characters otherwise. */ int mb_strnicmp(char_u *s1, char_u *s2, size_t nn) { int i, l; int cdiff; int n = (int)nn; if (enc_utf8) { return utf_strnicmp(s1, s2, nn, nn); } else { for (i = 0; i < n; i += l) { if (s1[i] == NUL && s2[i] == NUL) // both strings end return 0; l = (*mb_ptr2len)(s1 + i); if (l <= 1) { // Single byte: first check normally, then with ignore case. if (s1[i] != s2[i]) { cdiff = MB_TOLOWER(s1[i]) - MB_TOLOWER(s2[i]); if (cdiff != 0) return cdiff; } } else { // For non-Unicode multi-byte don't ignore case. if (l > n - i) l = n - i; cdiff = STRNCMP(s1 + i, s2 + i, l); if (cdiff != 0) return cdiff; } } } return 0; } /* * "g8": show bytes of the UTF-8 char under the cursor. Doesn't matter what * 'encoding' has been set to. */ void show_utf8(void) { int len; int rlen = 0; char_u *line; int clen; int i; // Get the byte length of the char under the cursor, including composing // characters. line = ml_get_cursor(); len = utfc_ptr2len(line); if (len == 0) { msg("NUL"); return; } clen = 0; for (i = 0; i < len; ++i) { if (clen == 0) { // start of (composing) character, get its length if (i > 0) { STRCPY(IObuff + rlen, "+ "); rlen += 2; } clen = utf_ptr2len(line + i); } sprintf((char *)IObuff + rlen, "%02x ", (line[i] == NL) ? NUL : line[i]); // NUL is stored as NL --clen; rlen += (int)STRLEN(IObuff + rlen); if (rlen > IOSIZE - 20) break; } msg((char *)IObuff); } /* * mb_head_off() function pointer. * Return offset from "p" to the first byte of the character it points into. * If "p" points to the NUL at the end of the string return 0. * Returns 0 when already at the first byte of a character. */ int latin_head_off(char_u *base UNUSED, char_u *p UNUSED) { return 0; } static int dbcs_head_off(char_u *base, char_u *p) { char_u *q; // It can't be a trailing byte when not using DBCS, at the start of the // string or the previous byte can't start a double-byte. if (p <= base || MB_BYTE2LEN(p[-1]) == 1 || *p == NUL) return 0; // This is slow: need to start at the base and go forward until the // byte we are looking for. Return 1 when we went past it, 0 otherwise. q = base; while (q < p) q += dbcs_ptr2len(q); return (q == p) ? 0 : 1; } /* * Special version of dbcs_head_off() that works for ScreenLines[], where * single-width DBCS_JPNU characters are stored separately. */ int dbcs_screen_head_off(char_u *base, char_u *p) { char_u *q; // It can't be a trailing byte when not using DBCS, at the start of the // string or the previous byte can't start a double-byte. // For euc-jp an 0x8e byte in the previous cell always means we have a // lead byte in the current cell. if (p <= base || (enc_dbcs == DBCS_JPNU && p[-1] == 0x8e) || MB_BYTE2LEN(p[-1]) == 1 || *p == NUL) return 0; // This is slow: need to start at the base and go forward until the // byte we are looking for. Return 1 when we went past it, 0 otherwise. // For DBCS_JPNU look out for 0x8e, which means the second byte is not // stored as the next byte. q = base; while (q < p) { if (enc_dbcs == DBCS_JPNU && *q == 0x8e) ++q; else q += dbcs_ptr2len(q); } return (q == p) ? 0 : 1; } int utf_head_off(char_u *base, char_u *p) { char_u *q; char_u *s; int c; int len; #ifdef FEAT_ARABIC char_u *j; #endif if (*p < 0x80) // be quick for ASCII return 0; // Skip backwards over trailing bytes: 10xx.xxxx // Skip backwards again if on a composing char. for (q = p; ; --q) { // Move s to the last byte of this char. for (s = q; (s[1] & 0xc0) == 0x80; ++s) ; // Move q to the first byte of this char. while (q > base && (*q & 0xc0) == 0x80) --q; // Check for illegal sequence. Do allow an illegal byte after where we // started. len = utf8len_tab[*q]; if (len != (int)(s - q + 1) && len != (int)(p - q + 1)) return 0; if (q <= base) break; c = utf_ptr2char(q); if (utf_iscomposing(c)) continue; #ifdef FEAT_ARABIC if (arabic_maycombine(c)) { // Advance to get a sneak-peak at the next char j = q; --j; // Move j to the first byte of this char. while (j > base && (*j & 0xc0) == 0x80) --j; if (arabic_combine(utf_ptr2char(j), c)) continue; } #endif break; } return (int)(p - q); } /* * Copy a character from "*fp" to "*tp" and advance the pointers. */ void mb_copy_char(char_u **fp, char_u **tp) { int l = (*mb_ptr2len)(*fp); mch_memmove(*tp, *fp, (size_t)l); *tp += l; *fp += l; } /* * Return the offset from "p" to the first byte of a character. When "p" is * at the start of a character 0 is returned, otherwise the offset to the next * character. Can start anywhere in a stream of bytes. */ int mb_off_next(char_u *base, char_u *p) { int i; int j; if (enc_utf8) { if (*p < 0x80) // be quick for ASCII return 0; // Find the next character that isn't 10xx.xxxx for (i = 0; (p[i] & 0xc0) == 0x80; ++i) ; if (i > 0) { // Check for illegal sequence. for (j = 0; p - j > base; ++j) if ((p[-j] & 0xc0) != 0x80) break; if (utf8len_tab[p[-j]] != i + j) return 0; } return i; } // Only need to check if we're on a trail byte, it doesn't matter if we // want the offset to the next or current character. return (*mb_head_off)(base, p); } /* * Return the offset from "p" to the last byte of the character it points * into. Can start anywhere in a stream of bytes. */ int mb_tail_off(char_u *base, char_u *p) { int i; int j; if (*p == NUL) return 0; if (enc_utf8) { // Find the last character that is 10xx.xxxx for (i = 0; (p[i + 1] & 0xc0) == 0x80; ++i) ; // Check for illegal sequence. for (j = 0; p - j > base; ++j) if ((p[-j] & 0xc0) != 0x80) break; if (utf8len_tab[p[-j]] != i + j + 1) return 0; return i; } // It can't be the first byte if a double-byte when not using DBCS, at the // end of the string or the byte can't start a double-byte. if (enc_dbcs == 0 || p[1] == NUL || MB_BYTE2LEN(*p) == 1) return 0; // Return 1 when on the lead byte, 0 when on the tail byte. return 1 - dbcs_head_off(base, p); } /* * Find the next illegal byte sequence. */ void utf_find_illegal(void) { pos_T pos = curwin->w_cursor; char_u *p; int len; vimconv_T vimconv; char_u *tofree = NULL; vimconv.vc_type = CONV_NONE; if (enc_utf8 && (enc_canon_props(curbuf->b_p_fenc) & ENC_8BIT)) { // 'encoding' is "utf-8" but we are editing a 8-bit encoded file, // possibly a utf-8 file with illegal bytes. Setup for conversion // from utf-8 to 'fileencoding'. convert_setup(&vimconv, p_enc, curbuf->b_p_fenc); } curwin->w_cursor.coladd = 0; for (;;) { p = ml_get_cursor(); if (vimconv.vc_type != CONV_NONE) { vim_free(tofree); tofree = string_convert(&vimconv, p, NULL); if (tofree == NULL) break; p = tofree; } while (*p != NUL) { // Illegal means that there are not enough trail bytes (checked by // utf_ptr2len()) or too many of them (overlong sequence). len = utf_ptr2len(p); if (*p >= 0x80 && (len == 1 || utf_char2len(utf_ptr2char(p)) != len)) { if (vimconv.vc_type == CONV_NONE) curwin->w_cursor.col += (colnr_T)(p - ml_get_cursor()); else { int l; len = (int)(p - tofree); for (p = ml_get_cursor(); *p != NUL && len-- > 0; p += l) { l = utf_ptr2len(p); curwin->w_cursor.col += l; } } goto theend; } p += len; } if (curwin->w_cursor.lnum == curbuf->b_ml.ml_line_count) break; ++curwin->w_cursor.lnum; curwin->w_cursor.col = 0; } // didn't find it: don't move and beep curwin->w_cursor = pos; beep_flush(); theend: vim_free(tofree); convert_setup(&vimconv, NULL, NULL); } #if defined(FEAT_GUI_GTK) || defined(PROTO) /* * Return TRUE if string "s" is a valid utf-8 string. * When "end" is NULL stop at the first NUL. * When "end" is positive stop there. */ int utf_valid_string(char_u *s, char_u *end) { int l; char_u *p = s; while (end == NULL ? *p != NUL : p < end) { l = utf8len_tab_zero[*p]; if (l == 0) return FALSE; // invalid lead byte if (end != NULL && p + l > end) return FALSE; // incomplete byte sequence ++p; while (--l > 0) if ((*p++ & 0xc0) != 0x80) return FALSE; // invalid trail byte } return TRUE; } #endif #if defined(FEAT_GUI) || defined(PROTO) /* * Special version of mb_tail_off() for use in ScreenLines[]. */ int dbcs_screen_tail_off(char_u *base, char_u *p) { // It can't be the first byte if a double-byte when not using DBCS, at the // end of the string or the byte can't start a double-byte. // For euc-jp an 0x8e byte always means we have a lead byte in the current // cell. if (*p == NUL || p[1] == NUL || (enc_dbcs == DBCS_JPNU && *p == 0x8e) || MB_BYTE2LEN(*p) == 1) return 0; // Return 1 when on the lead byte, 0 when on the tail byte. return 1 - dbcs_screen_head_off(base, p); } #endif /* * If the cursor moves on an trail byte, set the cursor on the lead byte. * Thus it moves left if necessary. * Return TRUE when the cursor was adjusted. */ void mb_adjust_cursor(void) { mb_adjustpos(curbuf, &curwin->w_cursor); } /* * Adjust position "*lp" to point to the first byte of a multi-byte character. * If it points to a tail byte it's moved backwards to the head byte. */ void mb_adjustpos(buf_T *buf, pos_T *lp) { char_u *p; if (lp->col > 0 || lp->coladd > 1) { p = ml_get_buf(buf, lp->lnum, FALSE); if (*p == NUL || (int)STRLEN(p) < lp->col) lp->col = 0; else lp->col -= (*mb_head_off)(p, p + lp->col); // Reset "coladd" when the cursor would be on the right half of a // double-wide character. if (lp->coladd == 1 && p[lp->col] != TAB && vim_isprintc((*mb_ptr2char)(p + lp->col)) && ptr2cells(p + lp->col) > 1) lp->coladd = 0; } } /* * Return a pointer to the character before "*p", if there is one. */ char_u * mb_prevptr( char_u *line, // start of the string char_u *p) { if (p > line) MB_PTR_BACK(line, p); return p; } /* * Return the character length of "str". Each multi-byte character (with * following composing characters) counts as one. */ int mb_charlen(char_u *str) { char_u *p = str; int count; if (p == NULL) return 0; for (count = 0; *p != NUL; count++) p += (*mb_ptr2len)(p); return count; } #if defined(FEAT_SPELL) || defined(PROTO) /* * Like mb_charlen() but for a string with specified length. */ int mb_charlen_len(char_u *str, int len) { char_u *p = str; int count; for (count = 0; *p != NUL && p < str + len; count++) p += (*mb_ptr2len)(p); return count; } #endif /* * Try to un-escape a multi-byte character. * Used for the "to" and "from" part of a mapping. * Return the un-escaped string if it is a multi-byte character, and advance * "pp" to just after the bytes that formed it. * Return NULL if no multi-byte char was found. */ char_u * mb_unescape(char_u **pp) { static char_u buf[6]; int n; int m = 0; char_u *str = *pp; // Must translate K_SPECIAL KS_SPECIAL KE_FILLER to K_SPECIAL and CSI // KS_EXTRA KE_CSI to CSI. // Maximum length of a utf-8 character is 4 bytes. for (n = 0; str[n] != NUL && m < 4; ++n) { if (str[n] == K_SPECIAL && str[n + 1] == KS_SPECIAL && str[n + 2] == KE_FILLER) { buf[m++] = K_SPECIAL; n += 2; } else if ((str[n] == K_SPECIAL # ifdef FEAT_GUI || str[n] == CSI # endif ) && str[n + 1] == KS_EXTRA && str[n + 2] == (int)KE_CSI) { buf[m++] = CSI; n += 2; } else if (str[n] == K_SPECIAL # ifdef FEAT_GUI || str[n] == CSI # endif ) break; // a special key can't be a multibyte char else buf[m++] = str[n]; buf[m] = NUL; // Return a multi-byte character if it's found. An illegal sequence // will result in a 1 here. if ((*mb_ptr2len)(buf) > 1) { *pp = str + n + 1; return buf; } // Bail out quickly for ASCII. if (buf[0] < 128) break; } return NULL; } /* * Return TRUE if the character at "row"/"col" on the screen is the left side * of a double-width character. * Caller must make sure "row" and "col" are not invalid! */ int mb_lefthalve(int row, int col) { return (*mb_off2cells)(LineOffset[row] + col, LineOffset[row] + screen_Columns) > 1; } /* * Correct a position on the screen, if it's the right half of a double-wide * char move it to the left half. Returns the corrected column. */ int mb_fix_col(int col, int row) { int off; col = check_col(col); row = check_row(row); off = LineOffset[row] + col; if (has_mbyte && ScreenLines != NULL && col > 0 && ((enc_dbcs && ScreenLines[off] != NUL && dbcs_screen_head_off(ScreenLines + LineOffset[row], ScreenLines + off)) || (enc_utf8 && ScreenLines[off] == 0 && ScreenLinesUC[off] == 0))) return col - 1; return col; } static int enc_alias_search(char_u *name); /* * Skip the Vim specific head of a 'encoding' name. */ char_u * enc_skip(char_u *p) { if (STRNCMP(p, "2byte-", 6) == 0) return p + 6; if (STRNCMP(p, "8bit-", 5) == 0) return p + 5; return p; } /* * Find the canonical name for encoding "enc". * When the name isn't recognized, returns "enc" itself, but with all lower * case characters and '_' replaced with '-'. * Returns an allocated string. NULL for out-of-memory. */ char_u * enc_canonize(char_u *enc) { char_u *r; char_u *p, *s; int i; if (STRCMP(enc, "default") == 0) { // Use the default encoding as it's found by set_init_1(). r = get_encoding_default(); if (r == NULL) r = (char_u *)"latin1"; return vim_strsave(r); } // copy "enc" to allocated memory, with room for two '-' r = alloc(STRLEN(enc) + 3); if (r != NULL) { // Make it all lower case and replace '_' with '-'. p = r; for (s = enc; *s != NUL; ++s) { if (*s == '_') *p++ = '-'; else *p++ = TOLOWER_ASC(*s); } *p = NUL; // Skip "2byte-" and "8bit-". p = enc_skip(r); // Change "microsoft-cp" to "cp". Used in some spell files. if (STRNCMP(p, "microsoft-cp", 12) == 0) STRMOVE(p, p + 10); // "iso8859" -> "iso-8859" if (STRNCMP(p, "iso8859", 7) == 0) { STRMOVE(p + 4, p + 3); p[3] = '-'; } // "iso-8859n" -> "iso-8859-n" if (STRNCMP(p, "iso-8859", 8) == 0 && p[8] != '-') { STRMOVE(p + 9, p + 8); p[8] = '-'; } // "latin-N" -> "latinN" if (STRNCMP(p, "latin-", 6) == 0) STRMOVE(p + 5, p + 6); if (enc_canon_search(p) >= 0) { // canonical name can be used unmodified if (p != r) STRMOVE(r, p); } else if ((i = enc_alias_search(p)) >= 0) { // alias recognized, get canonical name vim_free(r); r = vim_strsave((char_u *)enc_canon_table[i].name); } } return r; } /* * Search for an encoding alias of "name". * Returns -1 when not found. */ static int enc_alias_search(char_u *name) { int i; for (i = 0; enc_alias_table[i].name != NULL; ++i) if (STRCMP(name, enc_alias_table[i].name) == 0) return enc_alias_table[i].canon; return -1; } #ifdef HAVE_LANGINFO_H # include <langinfo.h> #endif #if !defined(FEAT_GUI_MSWIN) || defined(VIMDLL) /* * Get the canonicalized encoding from the specified locale string "locale" * or from the environment variables LC_ALL, LC_CTYPE and LANG. * Returns an allocated string when successful, NULL when not. */ char_u * enc_locale_env(char *locale) { char *s = locale; char *p; int i; char buf[50]; if (s == NULL || *s == NUL) if ((s = getenv("LC_ALL")) == NULL || *s == NUL) if ((s = getenv("LC_CTYPE")) == NULL || *s == NUL) s = getenv("LANG"); if (s == NULL || *s == NUL) return NULL; // The most generic locale format is: // language[_territory][.codeset][@modifier][+special][,[sponsor][_revision]] // If there is a '.' remove the part before it. // if there is something after the codeset, remove it. // Make the name lowercase and replace '_' with '-'. // Exception: "ja_JP.EUC" == "euc-jp", "zh_CN.EUC" = "euc-cn", // "ko_KR.EUC" == "euc-kr" if ((p = (char *)vim_strchr((char_u *)s, '.')) != NULL) { if (p > s + 2 && STRNICMP(p + 1, "EUC", 3) == 0 && !isalnum((int)p[4]) && p[4] != '-' && p[-3] == '_') { // copy "XY.EUC" to "euc-XY" to buf[10] STRCPY(buf + 10, "euc-"); buf[14] = p[-2]; buf[15] = p[-1]; buf[16] = 0; s = buf + 10; } else s = p + 1; } for (i = 0; i < (int)sizeof(buf) - 1 && s[i] != NUL; ++i) { if (s[i] == '_' || s[i] == '-') buf[i] = '-'; else if (isalnum((int)s[i])) buf[i] = TOLOWER_ASC(s[i]); else break; } buf[i] = NUL; return enc_canonize((char_u *)buf); } #endif /* * Get the canonicalized encoding of the current locale. * Returns an allocated string when successful, NULL when not. */ char_u * enc_locale(void) { #ifdef MSWIN char buf[50]; long acp = GetACP(); if (acp == 1200) STRCPY(buf, "ucs-2le"); else if (acp == 1252) // cp1252 is used as latin1 STRCPY(buf, "latin1"); else if (acp == 65001) STRCPY(buf, "utf-8"); else sprintf(buf, "cp%ld", acp); return enc_canonize((char_u *)buf); #else char *s; # ifdef HAVE_NL_LANGINFO_CODESET if ((s = nl_langinfo(CODESET)) == NULL || *s == NUL) # endif # if defined(HAVE_LOCALE_H) || defined(X_LOCALE) if ((s = setlocale(LC_CTYPE, NULL)) == NULL || *s == NUL) # endif s = NULL; return enc_locale_env(s); #endif } # if defined(MSWIN) || defined(PROTO) || defined(FEAT_CYGWIN_WIN32_CLIPBOARD) /* * Convert an encoding name to an MS-Windows codepage. * Returns zero if no codepage can be figured out. */ int encname2codepage(char_u *name) { int cp; char_u *p = name; int idx; if (STRNCMP(p, "8bit-", 5) == 0) p += 5; else if (STRNCMP(p_enc, "2byte-", 6) == 0) p += 6; if (p[0] == 'c' && p[1] == 'p') cp = atoi((char *)p + 2); else if ((idx = enc_canon_search(p)) >= 0) cp = enc_canon_table[idx].codepage; else return 0; if (IsValidCodePage(cp)) return cp; return 0; } # endif # if defined(USE_ICONV) || defined(PROTO) /* * Call iconv_open() with a check if iconv() works properly (there are broken * versions). * Returns (void *)-1 if failed. * (should return iconv_t, but that causes problems with prototypes). */ void * my_iconv_open(char_u *to, char_u *from) { iconv_t fd; #define ICONV_TESTLEN 400 char_u tobuf[ICONV_TESTLEN]; char *p; size_t tolen; static int iconv_ok = -1; if (iconv_ok == FALSE) return (void *)-1; // detected a broken iconv() previously #ifdef DYNAMIC_ICONV // Check if the iconv.dll can be found. if (!iconv_enabled(TRUE)) return (void *)-1; #endif fd = iconv_open((char *)enc_skip(to), (char *)enc_skip(from)); if (fd != (iconv_t)-1 && iconv_ok == -1) { /* * Do a dummy iconv() call to check if it actually works. There is a * version of iconv() on Linux that is broken. We can't ignore it, * because it's wide-spread. The symptoms are that after outputting * the initial shift state the "to" pointer is NULL and conversion * stops for no apparent reason after about 8160 characters. */ p = (char *)tobuf; tolen = ICONV_TESTLEN; (void)iconv(fd, NULL, NULL, &p, &tolen); if (p == NULL) { iconv_ok = FALSE; iconv_close(fd); fd = (iconv_t)-1; } else iconv_ok = TRUE; } return (void *)fd; } /* * Convert the string "str[slen]" with iconv(). * If "unconvlenp" is not NULL handle the string ending in an incomplete * sequence and set "*unconvlenp" to the length of it. * Returns the converted string in allocated memory. NULL for an error. * If resultlenp is not NULL, sets it to the result length in bytes. */ static char_u * iconv_string( vimconv_T *vcp, char_u *str, int slen, int *unconvlenp, int *resultlenp) { const char *from; size_t fromlen; char *to; size_t tolen; size_t len = 0; size_t done = 0; char_u *result = NULL; char_u *p; int l; from = (char *)str; fromlen = slen; for (;;) { if (len == 0 || ICONV_ERRNO == ICONV_E2BIG) { // Allocate enough room for most conversions. When re-allocating // increase the buffer size. len = len + fromlen * 2 + 40; p = alloc(len); if (p != NULL && done > 0) mch_memmove(p, result, done); vim_free(result); result = p; if (result == NULL) // out of memory break; } to = (char *)result + done; tolen = len - done - 2; // Avoid a warning for systems with a wrong iconv() prototype by // casting the second argument to void *. if (iconv(vcp->vc_fd, (void *)&from, &fromlen, &to, &tolen) != (size_t)-1) { // Finished, append a NUL. *to = NUL; break; } // Check both ICONV_EINVAL and EINVAL, because the dynamically loaded // iconv library may use one of them. if (!vcp->vc_fail && unconvlenp != NULL && (ICONV_ERRNO == ICONV_EINVAL || ICONV_ERRNO == EINVAL)) { // Handle an incomplete sequence at the end. *to = NUL; *unconvlenp = (int)fromlen; break; } // Check both ICONV_EILSEQ and EILSEQ, because the dynamically loaded // iconv library may use one of them. else if (!vcp->vc_fail && (ICONV_ERRNO == ICONV_EILSEQ || ICONV_ERRNO == EILSEQ || ICONV_ERRNO == ICONV_EINVAL || ICONV_ERRNO == EINVAL)) { // Can't convert: insert a '?' and skip a character. This assumes // conversion from 'encoding' to something else. In other // situations we don't know what to skip anyway. *to++ = '?'; if ((*mb_ptr2cells)((char_u *)from) > 1) *to++ = '?'; if (enc_utf8) l = utfc_ptr2len_len((char_u *)from, (int)fromlen); else { l = (*mb_ptr2len)((char_u *)from); if (l > (int)fromlen) l = (int)fromlen; } from += l; fromlen -= l; } else if (ICONV_ERRNO != ICONV_E2BIG) { // conversion failed VIM_CLEAR(result); break; } // Not enough room or skipping illegal sequence. done = to - (char *)result; } if (resultlenp != NULL && result != NULL) *resultlenp = (int)(to - (char *)result); return result; } # if defined(DYNAMIC_ICONV) || defined(PROTO) /* * Dynamically load the "iconv.dll" on Win32. */ # ifndef DYNAMIC_ICONV // must be generating prototypes # define HINSTANCE int # endif static HINSTANCE hIconvDLL = 0; static HINSTANCE hMsvcrtDLL = 0; # ifndef DYNAMIC_ICONV_DLL # define DYNAMIC_ICONV_DLL "iconv.dll" # define DYNAMIC_ICONV_DLL_ALT1 "libiconv.dll" # define DYNAMIC_ICONV_DLL_ALT2 "libiconv2.dll" # define DYNAMIC_ICONV_DLL_ALT3 "libiconv-2.dll" # endif # ifndef DYNAMIC_MSVCRT_DLL # define DYNAMIC_MSVCRT_DLL "msvcrt.dll" # endif /* * Try opening the iconv.dll and return TRUE if iconv() can be used. */ int iconv_enabled(int verbose) { if (hIconvDLL != 0 && hMsvcrtDLL != 0) return TRUE; // The iconv DLL file goes under different names, try them all. // Do the "2" version first, it's newer. #ifdef DYNAMIC_ICONV_DLL_ALT2 if (hIconvDLL == 0) hIconvDLL = vimLoadLib(DYNAMIC_ICONV_DLL_ALT2); #endif #ifdef DYNAMIC_ICONV_DLL_ALT3 if (hIconvDLL == 0) hIconvDLL = vimLoadLib(DYNAMIC_ICONV_DLL_ALT3); #endif if (hIconvDLL == 0) hIconvDLL = vimLoadLib(DYNAMIC_ICONV_DLL); #ifdef DYNAMIC_ICONV_DLL_ALT1 if (hIconvDLL == 0) hIconvDLL = vimLoadLib(DYNAMIC_ICONV_DLL_ALT1); #endif if (hIconvDLL != 0) hMsvcrtDLL = vimLoadLib(DYNAMIC_MSVCRT_DLL); if (hIconvDLL == 0 || hMsvcrtDLL == 0) { // Only give the message when 'verbose' is set, otherwise it might be // done whenever a conversion is attempted. if (verbose && p_verbose > 0) { verbose_enter(); semsg(_(e_loadlib), hIconvDLL == 0 ? DYNAMIC_ICONV_DLL : DYNAMIC_MSVCRT_DLL); verbose_leave(); } iconv_end(); return FALSE; } iconv = (void *)GetProcAddress(hIconvDLL, "libiconv"); iconv_open = (void *)GetProcAddress(hIconvDLL, "libiconv_open"); iconv_close = (void *)GetProcAddress(hIconvDLL, "libiconv_close"); iconvctl = (void *)GetProcAddress(hIconvDLL, "libiconvctl"); iconv_errno = get_dll_import_func(hIconvDLL, "_errno"); if (iconv_errno == NULL) iconv_errno = (void *)GetProcAddress(hMsvcrtDLL, "_errno"); if (iconv == NULL || iconv_open == NULL || iconv_close == NULL || iconvctl == NULL || iconv_errno == NULL) { iconv_end(); if (verbose && p_verbose > 0) { verbose_enter(); semsg(_(e_loadfunc), "for libiconv"); verbose_leave(); } return FALSE; } return TRUE; } void iconv_end(void) { // Don't use iconv() when inputting or outputting characters. if (input_conv.vc_type == CONV_ICONV) convert_setup(&input_conv, NULL, NULL); if (output_conv.vc_type == CONV_ICONV) convert_setup(&output_conv, NULL, NULL); if (hIconvDLL != 0) FreeLibrary(hIconvDLL); if (hMsvcrtDLL != 0) FreeLibrary(hMsvcrtDLL); hIconvDLL = 0; hMsvcrtDLL = 0; } # endif // DYNAMIC_ICONV # endif // USE_ICONV #ifdef FEAT_GUI # define USE_IMACTIVATEFUNC (!gui.in_use && *p_imaf != NUL) # define USE_IMSTATUSFUNC (!gui.in_use && *p_imsf != NUL) #else # define USE_IMACTIVATEFUNC (*p_imaf != NUL) # define USE_IMSTATUSFUNC (*p_imsf != NUL) #endif #if defined(FEAT_EVAL) && \ (defined(FEAT_XIM) || defined(IME_WITHOUT_XIM) || defined(VIMDLL)) static void call_imactivatefunc(int active) { typval_T argv[2]; argv[0].v_type = VAR_NUMBER; argv[0].vval.v_number = active ? 1 : 0; argv[1].v_type = VAR_UNKNOWN; (void)call_func_retnr(p_imaf, 1, argv); } static int call_imstatusfunc(void) { int is_active; // FIXME: Don't execute user function in unsafe situation. if (exiting || is_autocmd_blocked()) return FALSE; // FIXME: :py print 'xxx' is shown duplicate result. // Use silent to avoid it. ++msg_silent; is_active = call_func_retnr(p_imsf, 0, NULL); --msg_silent; return (is_active > 0); } #endif #if defined(FEAT_XIM) || defined(PROTO) # if defined(FEAT_GUI_GTK) || defined(PROTO) static int xim_has_preediting INIT(= FALSE); // IM current status /* * Set preedit_start_col to the current cursor position. */ static void init_preedit_start_col(void) { if (State & CMDLINE) preedit_start_col = cmdline_getvcol_cursor(); else if (curwin != NULL && curwin->w_buffer != NULL) getvcol(curwin, &curwin->w_cursor, &preedit_start_col, NULL, NULL); // Prevent that preediting marks the buffer as changed. xim_changed_while_preediting = curbuf->b_changed; } static int im_is_active = FALSE; // IM is enabled for current mode static int preedit_is_active = FALSE; static int im_preedit_cursor = 0; // cursor offset in characters static int im_preedit_trailing = 0; // number of characters after cursor static unsigned long im_commit_handler_id = 0; static unsigned int im_activatekey_keyval = GDK_VoidSymbol; static unsigned int im_activatekey_state = 0; static GtkWidget *preedit_window = NULL; static GtkWidget *preedit_label = NULL; static void im_preedit_window_set_position(void); void im_set_active(int active) { int was_active; was_active = !!im_get_status(); im_is_active = (active && !p_imdisable); if (im_is_active != was_active) xim_reset(); } void xim_set_focus(int focus) { if (xic != NULL) { if (focus) gtk_im_context_focus_in(xic); else gtk_im_context_focus_out(xic); } } void im_set_position(int row, int col) { if (xic != NULL) { GdkRectangle area; area.x = FILL_X(col); area.y = FILL_Y(row); area.width = gui.char_width * (mb_lefthalve(row, col) ? 2 : 1); area.height = gui.char_height; gtk_im_context_set_cursor_location(xic, &area); if (p_imst == IM_OVER_THE_SPOT) im_preedit_window_set_position(); } } # if 0 || defined(PROTO) // apparently only used in gui_x11.c void xim_set_preedit(void) { im_set_position(gui.row, gui.col); } # endif static void im_add_to_input(char_u *str, int len) { // Convert from 'termencoding' (always "utf-8") to 'encoding' if (input_conv.vc_type != CONV_NONE) { str = string_convert(&input_conv, str, &len); g_return_if_fail(str != NULL); } add_to_input_buf_csi(str, len); if (input_conv.vc_type != CONV_NONE) vim_free(str); if (p_mh) // blank out the pointer if necessary gui_mch_mousehide(TRUE); } static void im_preedit_window_set_position(void) { int x, y, width, height; int screen_x, screen_y, screen_width, screen_height; if (preedit_window == NULL) return; gui_gtk_get_screen_geom_of_win(gui.drawarea, &screen_x, &screen_y, &screen_width, &screen_height); gdk_window_get_origin(gtk_widget_get_window(gui.drawarea), &x, &y); gtk_window_get_size(GTK_WINDOW(preedit_window), &width, &height); x = x + FILL_X(gui.col); y = y + FILL_Y(gui.row); if (x + width > screen_x + screen_width) x = screen_x + screen_width - width; if (y + height > screen_y + screen_height) y = screen_y + screen_height - height; gtk_window_move(GTK_WINDOW(preedit_window), x, y); } static void im_preedit_window_open() { char *preedit_string; #if !GTK_CHECK_VERSION(3,16,0) char buf[8]; #endif PangoAttrList *attr_list; PangoLayout *layout; #if GTK_CHECK_VERSION(3,0,0) # if !GTK_CHECK_VERSION(3,16,0) GdkRGBA color; # endif #else GdkColor color; #endif gint w, h; if (preedit_window == NULL) { preedit_window = gtk_window_new(GTK_WINDOW_POPUP); gtk_window_set_transient_for(GTK_WINDOW(preedit_window), GTK_WINDOW(gui.mainwin)); preedit_label = gtk_label_new(""); gtk_widget_set_name(preedit_label, "vim-gui-preedit-area"); gtk_container_add(GTK_CONTAINER(preedit_window), preedit_label); } #if GTK_CHECK_VERSION(3,16,0) { GtkStyleContext * const context = gtk_widget_get_style_context(gui.drawarea); GtkCssProvider * const provider = gtk_css_provider_new(); gchar *css = NULL; const char * const fontname = pango_font_description_get_family(gui.norm_font); gint fontsize = pango_font_description_get_size(gui.norm_font) / PANGO_SCALE; gchar *fontsize_propval = NULL; if (!pango_font_description_get_size_is_absolute(gui.norm_font)) { // fontsize was given in points. Convert it into that in pixels // to use with CSS. GdkScreen * const screen = gdk_window_get_screen(gtk_widget_get_window(gui.mainwin)); const gdouble dpi = gdk_screen_get_resolution(screen); fontsize = dpi * fontsize / 72; } if (fontsize > 0) fontsize_propval = g_strdup_printf("%dpx", fontsize); else fontsize_propval = g_strdup_printf("inherit"); css = g_strdup_printf( "widget#vim-gui-preedit-area {\n" " font-family: %s,monospace;\n" " font-size: %s;\n" " color: #%.2lx%.2lx%.2lx;\n" " background-color: #%.2lx%.2lx%.2lx;\n" "}\n", fontname != NULL ? fontname : "inherit", fontsize_propval, (gui.norm_pixel >> 16) & 0xff, (gui.norm_pixel >> 8) & 0xff, gui.norm_pixel & 0xff, (gui.back_pixel >> 16) & 0xff, (gui.back_pixel >> 8) & 0xff, gui.back_pixel & 0xff); gtk_css_provider_load_from_data(provider, css, -1, NULL); gtk_style_context_add_provider(context, GTK_STYLE_PROVIDER(provider), G_MAXUINT); g_free(css); g_free(fontsize_propval); g_object_unref(provider); } #elif GTK_CHECK_VERSION(3,0,0) gtk_widget_override_font(preedit_label, gui.norm_font); vim_snprintf(buf, sizeof(buf), "#%06X", gui.norm_pixel); gdk_rgba_parse(&color, buf); gtk_widget_override_color(preedit_label, GTK_STATE_FLAG_NORMAL, &color); vim_snprintf(buf, sizeof(buf), "#%06X", gui.back_pixel); gdk_rgba_parse(&color, buf); gtk_widget_override_background_color(preedit_label, GTK_STATE_FLAG_NORMAL, &color); #else gtk_widget_modify_font(preedit_label, gui.norm_font); vim_snprintf(buf, sizeof(buf), "#%06X", (unsigned)gui.norm_pixel); gdk_color_parse(buf, &color); gtk_widget_modify_fg(preedit_label, GTK_STATE_NORMAL, &color); vim_snprintf(buf, sizeof(buf), "#%06X", (unsigned)gui.back_pixel); gdk_color_parse(buf, &color); gtk_widget_modify_bg(preedit_window, GTK_STATE_NORMAL, &color); #endif gtk_im_context_get_preedit_string(xic, &preedit_string, &attr_list, NULL); if (preedit_string[0] != NUL) { gtk_label_set_text(GTK_LABEL(preedit_label), preedit_string); gtk_label_set_attributes(GTK_LABEL(preedit_label), attr_list); layout = gtk_label_get_layout(GTK_LABEL(preedit_label)); pango_layout_get_pixel_size(layout, &w, &h); h = MAX(h, gui.char_height); gtk_window_resize(GTK_WINDOW(preedit_window), w, h); gtk_widget_show_all(preedit_window); im_preedit_window_set_position(); } g_free(preedit_string); pango_attr_list_unref(attr_list); } static void im_preedit_window_close() { if (preedit_window != NULL) gtk_widget_hide(preedit_window); } static void im_show_preedit() { im_preedit_window_open(); if (p_mh) // blank out the pointer if necessary gui_mch_mousehide(TRUE); } static void im_delete_preedit(void) { char_u bskey[] = {CSI, 'k', 'b'}; char_u delkey[] = {CSI, 'k', 'D'}; if (p_imst == IM_OVER_THE_SPOT) { im_preedit_window_close(); return; } if (State & NORMAL #ifdef FEAT_TERMINAL && !term_use_loop() #endif ) { im_preedit_cursor = 0; return; } for (; im_preedit_cursor > 0; --im_preedit_cursor) add_to_input_buf(bskey, (int)sizeof(bskey)); for (; im_preedit_trailing > 0; --im_preedit_trailing) add_to_input_buf(delkey, (int)sizeof(delkey)); } /* * Move the cursor left by "num_move_back" characters. * Note that ins_left() checks im_is_preediting() to avoid breaking undo for * these K_LEFT keys. */ static void im_correct_cursor(int num_move_back) { char_u backkey[] = {CSI, 'k', 'l'}; if (State & NORMAL) return; # ifdef FEAT_RIGHTLEFT if ((State & CMDLINE) == 0 && curwin != NULL && curwin->w_p_rl) backkey[2] = 'r'; # endif for (; num_move_back > 0; --num_move_back) add_to_input_buf(backkey, (int)sizeof(backkey)); } static int xim_expected_char = NUL; static int xim_ignored_char = FALSE; /* * Update the mode and cursor while in an IM callback. */ static void im_show_info(void) { int old_vgetc_busy; old_vgetc_busy = vgetc_busy; vgetc_busy = TRUE; showmode(); vgetc_busy = old_vgetc_busy; if ((State & NORMAL) || (State & INSERT)) setcursor(); out_flush(); } /* * Callback invoked when the user finished preediting. * Put the final string into the input buffer. */ static void im_commit_cb(GtkIMContext *context UNUSED, const gchar *str, gpointer data UNUSED) { int slen = (int)STRLEN(str); int add_to_input = TRUE; int clen; int len = slen; int commit_with_preedit = TRUE; char_u *im_str; #ifdef XIM_DEBUG xim_log("im_commit_cb(): %s\n", str); #endif if (p_imst == IM_ON_THE_SPOT) { // The imhangul module doesn't reset the preedit string before // committing. Call im_delete_preedit() to work around that. im_delete_preedit(); // Indicate that preediting has finished. if (preedit_start_col == MAXCOL) { init_preedit_start_col(); commit_with_preedit = FALSE; } // The thing which setting "preedit_start_col" to MAXCOL means that // "preedit_start_col" will be set forcedly when calling // preedit_changed_cb() next time. // "preedit_start_col" should not reset with MAXCOL on this part. Vim // is simulating the preediting by using add_to_input_str(). when // preedit begin immediately before committed, the typebuf is not // flushed to screen, then it can't get correct "preedit_start_col". // Thus, it should calculate the cells by adding cells of the committed // string. if (input_conv.vc_type != CONV_NONE) { im_str = string_convert(&input_conv, (char_u *)str, &len); g_return_if_fail(im_str != NULL); } else im_str = (char_u *)str; clen = mb_string2cells(im_str, len); if (input_conv.vc_type != CONV_NONE) vim_free(im_str); preedit_start_col += clen; } // Is this a single character that matches a keypad key that's just // been pressed? If so, we don't want it to be entered as such - let // us carry on processing the raw keycode so that it may be used in // mappings as <kSomething>. if (xim_expected_char != NUL) { // We're currently processing a keypad or other special key if (slen == 1 && str[0] == xim_expected_char) { // It's a match - don't do it here xim_ignored_char = TRUE; add_to_input = FALSE; } else { // Not a match xim_ignored_char = FALSE; } } if (add_to_input) im_add_to_input((char_u *)str, slen); if (p_imst == IM_ON_THE_SPOT) { // Inserting chars while "im_is_active" is set does not cause a // change of buffer. When the chars are committed the buffer must be // marked as changed. if (!commit_with_preedit) preedit_start_col = MAXCOL; // This flag is used in changed() at next call. xim_changed_while_preediting = TRUE; } if (gtk_main_level() > 0) gtk_main_quit(); } /* * Callback invoked after start to the preedit. */ static void im_preedit_start_cb(GtkIMContext *context UNUSED, gpointer data UNUSED) { #ifdef XIM_DEBUG xim_log("im_preedit_start_cb()\n"); #endif im_is_active = TRUE; preedit_is_active = TRUE; gui_update_cursor(TRUE, FALSE); im_show_info(); } /* * Callback invoked after end to the preedit. */ static void im_preedit_end_cb(GtkIMContext *context UNUSED, gpointer data UNUSED) { #ifdef XIM_DEBUG xim_log("im_preedit_end_cb()\n"); #endif im_delete_preedit(); // Indicate that preediting has finished if (p_imst == IM_ON_THE_SPOT) preedit_start_col = MAXCOL; xim_has_preediting = FALSE; #if 0 // Removal of this line suggested by Takuhiro Nishioka. Fixes that IM was // switched off unintentionally. We now use preedit_is_active (added by // SungHyun Nam). im_is_active = FALSE; #endif preedit_is_active = FALSE; gui_update_cursor(TRUE, FALSE); im_show_info(); } /* * Callback invoked after changes to the preedit string. If the preedit * string was empty before, remember the preedit start column so we know * where to apply feedback attributes. Delete the previous preedit string * if there was one, save the new preedit cursor offset, and put the new * string into the input buffer. * * TODO: The pragmatic "put into input buffer" approach used here has * several fundamental problems: * * - The characters in the preedit string are subject to remapping. * That's broken, only the finally committed string should be remapped. * * - There is a race condition involved: The retrieved value for the * current cursor position will be wrong if any unprocessed characters * are still queued in the input buffer. * * - Due to the lack of synchronization between the file buffer in memory * and any typed characters, it's practically impossible to implement the * "retrieve_surrounding" and "delete_surrounding" signals reliably. IM * modules for languages such as Thai are likely to rely on this feature * for proper operation. * * Conclusions: I think support for preediting needs to be moved to the * core parts of Vim. Ideally, until it has been committed, the preediting * string should only be displayed and not affect the buffer content at all. * The question how to deal with the synchronization issue still remains. * Circumventing the input buffer is probably not desirable. Anyway, I think * implementing "retrieve_surrounding" is the only hard problem. * * One way to solve all of this in a clean manner would be to queue all key * press/release events "as is" in the input buffer, and apply the IM filtering * at the receiving end of the queue. This, however, would have a rather large * impact on the code base. If there is an easy way to force processing of all * remaining input from within the "retrieve_surrounding" signal handler, this * might not be necessary. Gotta ask on vim-dev for opinions. */ static void im_preedit_changed_cb(GtkIMContext *context, gpointer data UNUSED) { char *preedit_string = NULL; int cursor_index = 0; int num_move_back = 0; char_u *str; char_u *p; int i; if (p_imst == IM_ON_THE_SPOT) gtk_im_context_get_preedit_string(context, &preedit_string, NULL, &cursor_index); else gtk_im_context_get_preedit_string(context, &preedit_string, NULL, NULL); #ifdef XIM_DEBUG xim_log("im_preedit_changed_cb(): %s\n", preedit_string); #endif g_return_if_fail(preedit_string != NULL); // just in case if (p_imst == IM_OVER_THE_SPOT) { if (preedit_string[0] == NUL) { xim_has_preediting = FALSE; im_delete_preedit(); } else { xim_has_preediting = TRUE; im_show_preedit(); } } else { // If preedit_start_col is MAXCOL set it to the current cursor position. if (preedit_start_col == MAXCOL && preedit_string[0] != '\0') { xim_has_preediting = TRUE; // Urgh, this breaks if the input buffer isn't empty now init_preedit_start_col(); } else if (cursor_index == 0 && preedit_string[0] == '\0') { xim_has_preediting = FALSE; // If at the start position (after typing backspace) // preedit_start_col must be reset. preedit_start_col = MAXCOL; } im_delete_preedit(); /* * Compute the end of the preediting area: "preedit_end_col". * According to the documentation of gtk_im_context_get_preedit_string(), * the cursor_pos output argument returns the offset in bytes. This is * unfortunately not true -- real life shows the offset is in characters, * and the GTK+ source code agrees with me. Will file a bug later. */ if (preedit_start_col != MAXCOL) preedit_end_col = preedit_start_col; str = (char_u *)preedit_string; for (p = str, i = 0; *p != NUL; p += utf_byte2len(*p), ++i) { int is_composing; is_composing = ((*p & 0x80) != 0 && utf_iscomposing(utf_ptr2char(p))); /* * These offsets are used as counters when generating <BS> and <Del> * to delete the preedit string. So don't count composing characters * unless 'delcombine' is enabled. */ if (!is_composing || p_deco) { if (i < cursor_index) ++im_preedit_cursor; else ++im_preedit_trailing; } if (!is_composing && i >= cursor_index) { // This is essentially the same as im_preedit_trailing, except // composing characters are not counted even if p_deco is set. ++num_move_back; } if (preedit_start_col != MAXCOL) preedit_end_col += utf_ptr2cells(p); } if (p > str) { im_add_to_input(str, (int)(p - str)); im_correct_cursor(num_move_back); } } g_free(preedit_string); if (gtk_main_level() > 0) gtk_main_quit(); } /* * Translate the Pango attributes at iter to Vim highlighting attributes. * Ignore attributes not supported by Vim highlighting. This shouldn't have * too much impact -- right now we handle even more attributes than necessary * for the IM modules I tested with. */ static int translate_pango_attributes(PangoAttrIterator *iter) { PangoAttribute *attr; int char_attr = HL_NORMAL; attr = pango_attr_iterator_get(iter, PANGO_ATTR_UNDERLINE); if (attr != NULL && ((PangoAttrInt *)attr)->value != (int)PANGO_UNDERLINE_NONE) char_attr |= HL_UNDERLINE; attr = pango_attr_iterator_get(iter, PANGO_ATTR_WEIGHT); if (attr != NULL && ((PangoAttrInt *)attr)->value >= (int)PANGO_WEIGHT_BOLD) char_attr |= HL_BOLD; attr = pango_attr_iterator_get(iter, PANGO_ATTR_STYLE); if (attr != NULL && ((PangoAttrInt *)attr)->value != (int)PANGO_STYLE_NORMAL) char_attr |= HL_ITALIC; attr = pango_attr_iterator_get(iter, PANGO_ATTR_BACKGROUND); if (attr != NULL) { const PangoColor *color = &((PangoAttrColor *)attr)->color; // Assume inverse if black background is requested if ((color->red | color->green | color->blue) == 0) char_attr |= HL_INVERSE; } return char_attr; } /* * Retrieve the highlighting attributes at column col in the preedit string. * Return -1 if not in preediting mode or if col is out of range. */ int im_get_feedback_attr(int col) { char *preedit_string = NULL; PangoAttrList *attr_list = NULL; int char_attr = -1; if (xic == NULL) return char_attr; gtk_im_context_get_preedit_string(xic, &preedit_string, &attr_list, NULL); if (preedit_string != NULL && attr_list != NULL) { int idx; // Get the byte index as used by PangoAttrIterator for (idx = 0; col > 0 && preedit_string[idx] != '\0'; --col) idx += utfc_ptr2len((char_u *)preedit_string + idx); if (preedit_string[idx] != '\0') { PangoAttrIterator *iter; int start, end; char_attr = HL_NORMAL; iter = pango_attr_list_get_iterator(attr_list); // Extract all relevant attributes from the list. do { pango_attr_iterator_range(iter, &start, &end); if (idx >= start && idx < end) char_attr |= translate_pango_attributes(iter); } while (pango_attr_iterator_next(iter)); pango_attr_iterator_destroy(iter); } } if (attr_list != NULL) pango_attr_list_unref(attr_list); g_free(preedit_string); return char_attr; } void xim_init(void) { #ifdef XIM_DEBUG xim_log("xim_init()\n"); #endif g_return_if_fail(gui.drawarea != NULL); g_return_if_fail(gtk_widget_get_window(gui.drawarea) != NULL); xic = gtk_im_multicontext_new(); g_object_ref(xic); im_commit_handler_id = g_signal_connect(G_OBJECT(xic), "commit", G_CALLBACK(&im_commit_cb), NULL); g_signal_connect(G_OBJECT(xic), "preedit_changed", G_CALLBACK(&im_preedit_changed_cb), NULL); g_signal_connect(G_OBJECT(xic), "preedit_start", G_CALLBACK(&im_preedit_start_cb), NULL); g_signal_connect(G_OBJECT(xic), "preedit_end", G_CALLBACK(&im_preedit_end_cb), NULL); gtk_im_context_set_client_window(xic, gtk_widget_get_window(gui.drawarea)); } void im_shutdown(void) { #ifdef XIM_DEBUG xim_log("im_shutdown()\n"); #endif if (xic != NULL) { gtk_im_context_focus_out(xic); g_object_unref(xic); xic = NULL; } im_is_active = FALSE; im_commit_handler_id = 0; if (p_imst == IM_ON_THE_SPOT) preedit_start_col = MAXCOL; xim_has_preediting = FALSE; } /* * Convert the string argument to keyval and state for GdkEventKey. * If str is valid return TRUE, otherwise FALSE. * * See 'imactivatekey' for documentation of the format. */ static int im_string_to_keyval(const char *str, unsigned int *keyval, unsigned int *state) { const char *mods_end; unsigned tmp_keyval; unsigned tmp_state = 0; mods_end = strrchr(str, '-'); mods_end = (mods_end != NULL) ? mods_end + 1 : str; // Parse modifier keys while (str < mods_end) switch (*str++) { case '-': break; case 'S': case 's': tmp_state |= (unsigned)GDK_SHIFT_MASK; break; case 'L': case 'l': tmp_state |= (unsigned)GDK_LOCK_MASK; break; case 'C': case 'c': tmp_state |= (unsigned)GDK_CONTROL_MASK;break; case '1': tmp_state |= (unsigned)GDK_MOD1_MASK; break; case '2': tmp_state |= (unsigned)GDK_MOD2_MASK; break; case '3': tmp_state |= (unsigned)GDK_MOD3_MASK; break; case '4': tmp_state |= (unsigned)GDK_MOD4_MASK; break; case '5': tmp_state |= (unsigned)GDK_MOD5_MASK; break; default: return FALSE; } tmp_keyval = gdk_keyval_from_name(str); if (tmp_keyval == 0 || tmp_keyval == GDK_VoidSymbol) return FALSE; if (keyval != NULL) *keyval = tmp_keyval; if (state != NULL) *state = tmp_state; return TRUE; } /* * Return TRUE if p_imak is valid, otherwise FALSE. As a special case, an * empty string is also regarded as valid. * * Note: The numerical key value of p_imak is cached if it was valid; thus * boldly assuming im_xim_isvalid_imactivate() will always be called whenever * 'imak' changes. This is currently the case but not obvious -- should * probably rename the function for clarity. */ int im_xim_isvalid_imactivate(void) { if (p_imak[0] == NUL) { im_activatekey_keyval = GDK_VoidSymbol; im_activatekey_state = 0; return TRUE; } return im_string_to_keyval((const char *)p_imak, &im_activatekey_keyval, &im_activatekey_state); } static void im_synthesize_keypress(unsigned int keyval, unsigned int state) { GdkEventKey *event; event = (GdkEventKey *)gdk_event_new(GDK_KEY_PRESS); g_object_ref(gtk_widget_get_window(gui.drawarea)); // unreffed by gdk_event_free() event->window = gtk_widget_get_window(gui.drawarea); event->send_event = TRUE; event->time = GDK_CURRENT_TIME; event->state = state; event->keyval = keyval; event->hardware_keycode = // needed for XIM XKeysymToKeycode(GDK_WINDOW_XDISPLAY(event->window), (KeySym)keyval); event->length = 0; event->string = NULL; gtk_im_context_filter_keypress(xic, event); // For consistency, also send the corresponding release event. event->type = GDK_KEY_RELEASE; event->send_event = FALSE; gtk_im_context_filter_keypress(xic, event); gdk_event_free((GdkEvent *)event); } void xim_reset(void) { # ifdef FEAT_EVAL if (USE_IMACTIVATEFUNC) call_imactivatefunc(im_is_active); else # endif if (xic != NULL) { gtk_im_context_reset(xic); if (p_imdisable) im_shutdown(); else { xim_set_focus(gui.in_focus); if (im_activatekey_keyval != GDK_VoidSymbol) { if (im_is_active) { g_signal_handler_block(xic, im_commit_handler_id); im_synthesize_keypress(im_activatekey_keyval, im_activatekey_state); g_signal_handler_unblock(xic, im_commit_handler_id); } } else { im_shutdown(); xim_init(); xim_set_focus(gui.in_focus); } } } if (p_imst == IM_ON_THE_SPOT) preedit_start_col = MAXCOL; xim_has_preediting = FALSE; } int xim_queue_key_press_event(GdkEventKey *event, int down) { if (down) { /* * Workaround GTK2 XIM 'feature' that always converts keypad keys to * chars., even when not part of an IM sequence (ref. feature of * gdk/gdkkeyuni.c). * Flag any keypad keys that might represent a single char. * If this (on its own - i.e., not part of an IM sequence) is * committed while we're processing one of these keys, we can ignore * that commit and go ahead & process it ourselves. That way we can * still distinguish keypad keys for use in mappings. * Also add GDK_space to make <S-Space> work. */ switch (event->keyval) { case GDK_KP_Add: xim_expected_char = '+'; break; case GDK_KP_Subtract: xim_expected_char = '-'; break; case GDK_KP_Divide: xim_expected_char = '/'; break; case GDK_KP_Multiply: xim_expected_char = '*'; break; case GDK_KP_Decimal: xim_expected_char = '.'; break; case GDK_KP_Equal: xim_expected_char = '='; break; case GDK_KP_0: xim_expected_char = '0'; break; case GDK_KP_1: xim_expected_char = '1'; break; case GDK_KP_2: xim_expected_char = '2'; break; case GDK_KP_3: xim_expected_char = '3'; break; case GDK_KP_4: xim_expected_char = '4'; break; case GDK_KP_5: xim_expected_char = '5'; break; case GDK_KP_6: xim_expected_char = '6'; break; case GDK_KP_7: xim_expected_char = '7'; break; case GDK_KP_8: xim_expected_char = '8'; break; case GDK_KP_9: xim_expected_char = '9'; break; case GDK_space: xim_expected_char = ' '; break; default: xim_expected_char = NUL; } xim_ignored_char = FALSE; } /* * When typing fFtT, XIM may be activated. Thus it must pass * gtk_im_context_filter_keypress() in Normal mode. * And while doing :sh too. */ if (xic != NULL && !p_imdisable && (State & (INSERT | CMDLINE | NORMAL | EXTERNCMD)) != 0) { /* * Filter 'imactivatekey' and map it to CTRL-^. This way, Vim is * always aware of the current status of IM, and can even emulate * the activation key for modules that don't support one. */ if (event->keyval == im_activatekey_keyval && (event->state & im_activatekey_state) == im_activatekey_state) { unsigned int state_mask; // Require the state of the 3 most used modifiers to match exactly. // Otherwise e.g. <S-C-space> would be unusable for other purposes // if the IM activate key is <S-space>. state_mask = im_activatekey_state; state_mask |= ((int)GDK_SHIFT_MASK | (int)GDK_CONTROL_MASK | (int)GDK_MOD1_MASK); if ((event->state & state_mask) != im_activatekey_state) return FALSE; // Don't send it a second time on GDK_KEY_RELEASE. if (event->type != GDK_KEY_PRESS) return TRUE; if (map_to_exists_mode((char_u *)"", LANGMAP, FALSE)) { im_set_active(FALSE); // ":lmap" mappings exists, toggle use of mappings. State ^= LANGMAP; if (State & LANGMAP) { curbuf->b_p_iminsert = B_IMODE_NONE; State &= ~LANGMAP; } else { curbuf->b_p_iminsert = B_IMODE_LMAP; State |= LANGMAP; } return TRUE; } return gtk_im_context_filter_keypress(xic, event); } // Don't filter events through the IM context if IM isn't active // right now. Unlike with GTK+ 1.2 we cannot rely on the IM module // not doing anything before the activation key was sent. if (im_activatekey_keyval == GDK_VoidSymbol || im_is_active) { int imresult = gtk_im_context_filter_keypress(xic, event); if (p_imst == IM_ON_THE_SPOT) { // Some XIM send following sequence: // 1. preedited string. // 2. committed string. // 3. line changed key. // 4. preedited string. // 5. remove preedited string. // if 3, Vim can't move back the above line for 5. // thus, this part should not parse the key. if (!imresult && preedit_start_col != MAXCOL && event->keyval == GDK_Return) { im_synthesize_keypress(GDK_Return, 0U); return FALSE; } } // If XIM tried to commit a keypad key as a single char., // ignore it so we can use the keypad key 'raw', for mappings. if (xim_expected_char != NUL && xim_ignored_char) // We had a keypad key, and XIM tried to thieve it return FALSE; // This is supposed to fix a problem with iBus, that space // characters don't work in input mode. xim_expected_char = NUL; // Normal processing return imresult; } } return FALSE; } int im_get_status(void) { # ifdef FEAT_EVAL if (USE_IMSTATUSFUNC) return call_imstatusfunc(); # endif return im_is_active; } int preedit_get_status(void) { return preedit_is_active; } int im_is_preediting(void) { return xim_has_preediting; } # else // !FEAT_GUI_GTK static int xim_is_active = FALSE; // XIM should be active in the current // mode static int xim_has_focus = FALSE; // XIM is really being used for Vim # ifdef FEAT_GUI_X11 static XIMStyle input_style; static int status_area_enabled = TRUE; # endif /* * Switch using XIM on/off. This is used by the code that changes "State". * When 'imactivatefunc' is defined use that function instead. */ void im_set_active(int active_arg) { int active = active_arg; // If 'imdisable' is set, XIM is never active. if (p_imdisable) active = FALSE; else if (input_style & XIMPreeditPosition) // There is a problem in switching XIM off when preediting is used, // and it is not clear how this can be solved. For now, keep XIM on // all the time, like it was done in Vim 5.8. active = TRUE; # if defined(FEAT_EVAL) if (USE_IMACTIVATEFUNC) { if (active != im_get_status()) { call_imactivatefunc(active); xim_has_focus = active; } return; } # endif if (xic == NULL) return; // Remember the active state, it is needed when Vim gets keyboard focus. xim_is_active = active; xim_set_preedit(); } /* * Adjust using XIM for gaining or losing keyboard focus. Also called when * "xim_is_active" changes. */ void xim_set_focus(int focus) { if (xic == NULL) return; /* * XIM only gets focus when the Vim window has keyboard focus and XIM has * been set active for the current mode. */ if (focus && xim_is_active) { if (!xim_has_focus) { xim_has_focus = TRUE; XSetICFocus(xic); } } else { if (xim_has_focus) { xim_has_focus = FALSE; XUnsetICFocus(xic); } } } void im_set_position(int row UNUSED, int col UNUSED) { xim_set_preedit(); } /* * Set the XIM to the current cursor position. */ void xim_set_preedit(void) { XVaNestedList attr_list; XRectangle spot_area; XPoint over_spot; int line_space; if (xic == NULL) return; xim_set_focus(TRUE); if (!xim_has_focus) { // hide XIM cursor over_spot.x = 0; over_spot.y = -100; // arbitrary invisible position attr_list = (XVaNestedList) XVaCreateNestedList(0, XNSpotLocation, &over_spot, NULL); XSetICValues(xic, XNPreeditAttributes, attr_list, NULL); XFree(attr_list); return; } if (input_style & XIMPreeditPosition) { if (xim_fg_color == INVALCOLOR) { xim_fg_color = gui.def_norm_pixel; xim_bg_color = gui.def_back_pixel; } over_spot.x = TEXT_X(gui.col); over_spot.y = TEXT_Y(gui.row); spot_area.x = 0; spot_area.y = 0; spot_area.height = gui.char_height * Rows; spot_area.width = gui.char_width * Columns; line_space = gui.char_height; attr_list = (XVaNestedList) XVaCreateNestedList(0, XNSpotLocation, &over_spot, XNForeground, (Pixel) xim_fg_color, XNBackground, (Pixel) xim_bg_color, XNArea, &spot_area, XNLineSpace, line_space, NULL); if (XSetICValues(xic, XNPreeditAttributes, attr_list, NULL)) emsg(_("E284: Cannot set IC values")); XFree(attr_list); } } # if defined(FEAT_GUI_X11) static char e_xim[] = N_("E285: Failed to create input context"); # endif # if defined(FEAT_GUI_X11) || defined(PROTO) # if defined(XtSpecificationRelease) && XtSpecificationRelease >= 6 && !defined(SUN_SYSTEM) # define USE_X11R6_XIM # endif static int xim_real_init(Window x11_window, Display *x11_display); # ifdef USE_X11R6_XIM static void xim_instantiate_cb( Display *display, XPointer client_data UNUSED, XPointer call_data UNUSED) { Window x11_window; Display *x11_display; # ifdef XIM_DEBUG xim_log("xim_instantiate_cb()\n"); # endif gui_get_x11_windis(&x11_window, &x11_display); if (display != x11_display) return; xim_real_init(x11_window, x11_display); gui_set_shellsize(FALSE, FALSE, RESIZE_BOTH); if (xic != NULL) XUnregisterIMInstantiateCallback(x11_display, NULL, NULL, NULL, xim_instantiate_cb, NULL); } static void xim_destroy_cb( XIM im UNUSED, XPointer client_data UNUSED, XPointer call_data UNUSED) { Window x11_window; Display *x11_display; # ifdef XIM_DEBUG xim_log("xim_destroy_cb()\n"); #endif gui_get_x11_windis(&x11_window, &x11_display); xic = NULL; status_area_enabled = FALSE; gui_set_shellsize(FALSE, FALSE, RESIZE_BOTH); XRegisterIMInstantiateCallback(x11_display, NULL, NULL, NULL, xim_instantiate_cb, NULL); } # endif void xim_init(void) { Window x11_window; Display *x11_display; # ifdef XIM_DEBUG xim_log("xim_init()\n"); # endif gui_get_x11_windis(&x11_window, &x11_display); xic = NULL; if (xim_real_init(x11_window, x11_display)) return; gui_set_shellsize(FALSE, FALSE, RESIZE_BOTH); # ifdef USE_X11R6_XIM XRegisterIMInstantiateCallback(x11_display, NULL, NULL, NULL, xim_instantiate_cb, NULL); # endif } static int xim_real_init(Window x11_window, Display *x11_display) { int i; char *p, *s, *ns, *end, tmp[1024]; # define IMLEN_MAX 40 char buf[IMLEN_MAX + 7]; XIM xim = NULL; XIMStyles *xim_styles; XIMStyle this_input_style = 0; Boolean found; XPoint over_spot; XVaNestedList preedit_list, status_list; input_style = 0; status_area_enabled = FALSE; if (xic != NULL) return FALSE; if (gui.rsrc_input_method != NULL && *gui.rsrc_input_method != NUL) { strcpy(tmp, gui.rsrc_input_method); for (ns = s = tmp; ns != NULL && *s != NUL;) { s = (char *)skipwhite((char_u *)s); if (*s == NUL) break; if ((ns = end = strchr(s, ',')) == NULL) end = s + strlen(s); while (isspace(((char_u *)end)[-1])) end--; *end = NUL; if (strlen(s) <= IMLEN_MAX) { strcpy(buf, "@im="); strcat(buf, s); if ((p = XSetLocaleModifiers(buf)) != NULL && *p != NUL && (xim = XOpenIM(x11_display, NULL, NULL, NULL)) != NULL) break; } s = ns + 1; } } if (xim == NULL && (p = XSetLocaleModifiers("")) != NULL && *p != NUL) xim = XOpenIM(x11_display, NULL, NULL, NULL); // This is supposed to be useful to obtain characters through // XmbLookupString() without really using a XIM. if (xim == NULL && (p = XSetLocaleModifiers("@im=none")) != NULL && *p != NUL) xim = XOpenIM(x11_display, NULL, NULL, NULL); if (xim == NULL) { // Only give this message when verbose is set, because too many people // got this message when they didn't want to use a XIM. if (p_verbose > 0) { verbose_enter(); emsg(_("E286: Failed to open input method")); verbose_leave(); } return FALSE; } # ifdef USE_X11R6_XIM { XIMCallback destroy_cb; destroy_cb.callback = xim_destroy_cb; destroy_cb.client_data = NULL; if (XSetIMValues(xim, XNDestroyCallback, &destroy_cb, NULL)) emsg(_("E287: Warning: Could not set destroy callback to IM")); } # endif if (XGetIMValues(xim, XNQueryInputStyle, &xim_styles, NULL) || !xim_styles) { emsg(_("E288: input method doesn't support any style")); XCloseIM(xim); return FALSE; } found = False; strcpy(tmp, gui.rsrc_preedit_type_name); for (s = tmp; s && !found; ) { while (*s && isspace((unsigned char)*s)) s++; if (!*s) break; if ((ns = end = strchr(s, ',')) != 0) ns++; else end = s + strlen(s); while (isspace((unsigned char)*end)) end--; *end = '\0'; if (!strcmp(s, "OverTheSpot")) this_input_style = (XIMPreeditPosition | XIMStatusArea); else if (!strcmp(s, "OffTheSpot")) this_input_style = (XIMPreeditArea | XIMStatusArea); else if (!strcmp(s, "Root")) this_input_style = (XIMPreeditNothing | XIMStatusNothing); for (i = 0; (unsigned short)i < xim_styles->count_styles; i++) { if (this_input_style == xim_styles->supported_styles[i]) { found = True; break; } } if (!found) for (i = 0; (unsigned short)i < xim_styles->count_styles; i++) { if ((xim_styles->supported_styles[i] & this_input_style) == (this_input_style & ~XIMStatusArea)) { this_input_style &= ~XIMStatusArea; found = True; break; } } s = ns; } XFree(xim_styles); if (!found) { // Only give this message when verbose is set, because too many people // got this message when they didn't want to use a XIM. if (p_verbose > 0) { verbose_enter(); emsg(_("E289: input method doesn't support my preedit type")); verbose_leave(); } XCloseIM(xim); return FALSE; } over_spot.x = TEXT_X(gui.col); over_spot.y = TEXT_Y(gui.row); input_style = this_input_style; // A crash was reported when trying to pass gui.norm_font as XNFontSet, // thus that has been removed. Hopefully the default works... # ifdef FEAT_XFONTSET if (gui.fontset != NOFONTSET) { preedit_list = XVaCreateNestedList(0, XNSpotLocation, &over_spot, XNForeground, (Pixel)gui.def_norm_pixel, XNBackground, (Pixel)gui.def_back_pixel, XNFontSet, (XFontSet)gui.fontset, NULL); status_list = XVaCreateNestedList(0, XNForeground, (Pixel)gui.def_norm_pixel, XNBackground, (Pixel)gui.def_back_pixel, XNFontSet, (XFontSet)gui.fontset, NULL); } else # endif { preedit_list = XVaCreateNestedList(0, XNSpotLocation, &over_spot, XNForeground, (Pixel)gui.def_norm_pixel, XNBackground, (Pixel)gui.def_back_pixel, NULL); status_list = XVaCreateNestedList(0, XNForeground, (Pixel)gui.def_norm_pixel, XNBackground, (Pixel)gui.def_back_pixel, NULL); } xic = XCreateIC(xim, XNInputStyle, input_style, XNClientWindow, x11_window, XNFocusWindow, gui.wid, XNPreeditAttributes, preedit_list, XNStatusAttributes, status_list, NULL); XFree(status_list); XFree(preedit_list); if (xic != NULL) { if (input_style & XIMStatusArea) { xim_set_status_area(); status_area_enabled = TRUE; } else gui_set_shellsize(FALSE, FALSE, RESIZE_BOTH); } else { if (!is_not_a_term()) emsg(_(e_xim)); XCloseIM(xim); return FALSE; } return TRUE; } # endif // FEAT_GUI_X11 /* * Get IM status. When IM is on, return TRUE. Else return FALSE. * FIXME: This doesn't work correctly: Having focus doesn't always mean XIM is * active, when not having focus XIM may still be active (e.g., when using a * tear-off menu item). */ int im_get_status(void) { # ifdef FEAT_EVAL if (USE_IMSTATUSFUNC) return call_imstatusfunc(); # endif return xim_has_focus; } # endif // !FEAT_GUI_GTK # if !defined(FEAT_GUI_GTK) || defined(PROTO) /* * Set up the status area. * * This should use a separate Widget, but that seems not possible, because * preedit_area and status_area should be set to the same window as for the * text input. Unfortunately this means the status area pollutes the text * window... */ void xim_set_status_area(void) { XVaNestedList preedit_list = 0, status_list = 0, list = 0; XRectangle pre_area, status_area; if (xic == NULL) return; if (input_style & XIMStatusArea) { if (input_style & XIMPreeditArea) { XRectangle *needed_rect; // to get status_area width status_list = XVaCreateNestedList(0, XNAreaNeeded, &needed_rect, NULL); XGetICValues(xic, XNStatusAttributes, status_list, NULL); XFree(status_list); status_area.width = needed_rect->width; } else status_area.width = gui.char_width * Columns; status_area.x = 0; status_area.y = gui.char_height * Rows + gui.border_offset; if (gui.which_scrollbars[SBAR_BOTTOM]) status_area.y += gui.scrollbar_height; #ifdef FEAT_MENU if (gui.menu_is_active) status_area.y += gui.menu_height; #endif status_area.height = gui.char_height; status_list = XVaCreateNestedList(0, XNArea, &status_area, NULL); } else { status_area.x = 0; status_area.y = gui.char_height * Rows + gui.border_offset; if (gui.which_scrollbars[SBAR_BOTTOM]) status_area.y += gui.scrollbar_height; #ifdef FEAT_MENU if (gui.menu_is_active) status_area.y += gui.menu_height; #endif status_area.width = 0; status_area.height = gui.char_height; } if (input_style & XIMPreeditArea) // off-the-spot { pre_area.x = status_area.x + status_area.width; pre_area.y = gui.char_height * Rows + gui.border_offset; pre_area.width = gui.char_width * Columns - pre_area.x; if (gui.which_scrollbars[SBAR_BOTTOM]) pre_area.y += gui.scrollbar_height; #ifdef FEAT_MENU if (gui.menu_is_active) pre_area.y += gui.menu_height; #endif pre_area.height = gui.char_height; preedit_list = XVaCreateNestedList(0, XNArea, &pre_area, NULL); } else if (input_style & XIMPreeditPosition) // over-the-spot { pre_area.x = 0; pre_area.y = 0; pre_area.height = gui.char_height * Rows; pre_area.width = gui.char_width * Columns; preedit_list = XVaCreateNestedList(0, XNArea, &pre_area, NULL); } if (preedit_list && status_list) list = XVaCreateNestedList(0, XNPreeditAttributes, preedit_list, XNStatusAttributes, status_list, NULL); else if (preedit_list) list = XVaCreateNestedList(0, XNPreeditAttributes, preedit_list, NULL); else if (status_list) list = XVaCreateNestedList(0, XNStatusAttributes, status_list, NULL); else list = NULL; if (list) { XSetICValues(xic, XNVaNestedList, list, NULL); XFree(list); } if (status_list) XFree(status_list); if (preedit_list) XFree(preedit_list); } int xim_get_status_area_height(void) { if (status_area_enabled) return gui.char_height; return 0; } # endif #else // !defined(FEAT_XIM) # if defined(IME_WITHOUT_XIM) || defined(VIMDLL) static int im_was_set_active = FALSE; int # ifdef VIMDLL mbyte_im_get_status(void) # else im_get_status(void) # endif { # if defined(FEAT_EVAL) if (USE_IMSTATUSFUNC) return call_imstatusfunc(); # endif return im_was_set_active; } void # ifdef VIMDLL mbyte_im_set_active(int active_arg) # else im_set_active(int active_arg) # endif { # if defined(FEAT_EVAL) int active = !p_imdisable && active_arg; if (USE_IMACTIVATEFUNC && active != im_get_status()) { call_imactivatefunc(active); im_was_set_active = active; } # endif } # if defined(FEAT_GUI) && !defined(FEAT_GUI_HAIKU) && !defined(VIMDLL) void im_set_position(int row UNUSED, int col UNUSED) { } # endif # endif #endif // FEAT_XIM #if defined(FEAT_EVAL) || defined(PROTO) /* * "getimstatus()" function */ void f_getimstatus(typval_T *argvars UNUSED, typval_T *rettv) { # if defined(HAVE_INPUT_METHOD) rettv->vval.v_number = im_get_status(); # endif } #endif /* * Setup "vcp" for conversion from "from" to "to". * The names must have been made canonical with enc_canonize(). * vcp->vc_type must have been initialized to CONV_NONE. * Note: cannot be used for conversion from/to ucs-2 and ucs-4 (will use utf-8 * instead). * Afterwards invoke with "from" and "to" equal to NULL to cleanup. * Return FAIL when conversion is not supported, OK otherwise. */ int convert_setup(vimconv_T *vcp, char_u *from, char_u *to) { return convert_setup_ext(vcp, from, TRUE, to, TRUE); } /* * As convert_setup(), but only when from_unicode_is_utf8 is TRUE will all * "from" unicode charsets be considered utf-8. Same for "to". */ int convert_setup_ext( vimconv_T *vcp, char_u *from, int from_unicode_is_utf8, char_u *to, int to_unicode_is_utf8) { int from_prop; int to_prop; int from_is_utf8; int to_is_utf8; // Reset to no conversion. #ifdef USE_ICONV if (vcp->vc_type == CONV_ICONV && vcp->vc_fd != (iconv_t)-1) iconv_close(vcp->vc_fd); #endif vcp->vc_type = CONV_NONE; vcp->vc_factor = 1; vcp->vc_fail = FALSE; // No conversion when one of the names is empty or they are equal. if (from == NULL || *from == NUL || to == NULL || *to == NUL || STRCMP(from, to) == 0) return OK; from_prop = enc_canon_props(from); to_prop = enc_canon_props(to); if (from_unicode_is_utf8) from_is_utf8 = from_prop & ENC_UNICODE; else from_is_utf8 = from_prop == ENC_UNICODE; if (to_unicode_is_utf8) to_is_utf8 = to_prop & ENC_UNICODE; else to_is_utf8 = to_prop == ENC_UNICODE; if ((from_prop & ENC_LATIN1) && to_is_utf8) { // Internal latin1 -> utf-8 conversion. vcp->vc_type = CONV_TO_UTF8; vcp->vc_factor = 2; // up to twice as long } else if ((from_prop & ENC_LATIN9) && to_is_utf8) { // Internal latin9 -> utf-8 conversion. vcp->vc_type = CONV_9_TO_UTF8; vcp->vc_factor = 3; // up to three as long (euro sign) } else if (from_is_utf8 && (to_prop & ENC_LATIN1)) { // Internal utf-8 -> latin1 conversion. vcp->vc_type = CONV_TO_LATIN1; } else if (from_is_utf8 && (to_prop & ENC_LATIN9)) { // Internal utf-8 -> latin9 conversion. vcp->vc_type = CONV_TO_LATIN9; } #ifdef MSWIN // Win32-specific codepage <-> codepage conversion without iconv. else if ((from_is_utf8 || encname2codepage(from) > 0) && (to_is_utf8 || encname2codepage(to) > 0)) { vcp->vc_type = CONV_CODEPAGE; vcp->vc_factor = 2; // up to twice as long vcp->vc_cpfrom = from_is_utf8 ? 0 : encname2codepage(from); vcp->vc_cpto = to_is_utf8 ? 0 : encname2codepage(to); } #endif #ifdef MACOS_CONVERT else if ((from_prop & ENC_MACROMAN) && (to_prop & ENC_LATIN1)) { vcp->vc_type = CONV_MAC_LATIN1; } else if ((from_prop & ENC_MACROMAN) && to_is_utf8) { vcp->vc_type = CONV_MAC_UTF8; vcp->vc_factor = 2; // up to twice as long } else if ((from_prop & ENC_LATIN1) && (to_prop & ENC_MACROMAN)) { vcp->vc_type = CONV_LATIN1_MAC; } else if (from_is_utf8 && (to_prop & ENC_MACROMAN)) { vcp->vc_type = CONV_UTF8_MAC; } #endif #ifdef USE_ICONV else { // Use iconv() for conversion. vcp->vc_fd = (iconv_t)my_iconv_open( to_is_utf8 ? (char_u *)"utf-8" : to, from_is_utf8 ? (char_u *)"utf-8" : from); if (vcp->vc_fd != (iconv_t)-1) { vcp->vc_type = CONV_ICONV; vcp->vc_factor = 4; // could be longer too... } } #endif if (vcp->vc_type == CONV_NONE) return FAIL; return OK; } #if defined(FEAT_GUI) || defined(AMIGA) || defined(MSWIN) \ || defined(PROTO) /* * Do conversion on typed input characters in-place. * The input and output are not NUL terminated! * Returns the length after conversion. */ int convert_input(char_u *ptr, int len, int maxlen) { return convert_input_safe(ptr, len, maxlen, NULL, NULL); } #endif /* * Like convert_input(), but when there is an incomplete byte sequence at the * end return that as an allocated string in "restp" and set "*restlenp" to * the length. If "restp" is NULL it is not used. */ int convert_input_safe( char_u *ptr, int len, int maxlen, char_u **restp, int *restlenp) { char_u *d; int dlen = len; int unconvertlen = 0; d = string_convert_ext(&input_conv, ptr, &dlen, restp == NULL ? NULL : &unconvertlen); if (d != NULL) { if (dlen <= maxlen) { if (unconvertlen > 0) { // Move the unconverted characters to allocated memory. *restp = alloc(unconvertlen); if (*restp != NULL) mch_memmove(*restp, ptr + len - unconvertlen, unconvertlen); *restlenp = unconvertlen; } mch_memmove(ptr, d, dlen); } else // result is too long, keep the unconverted text (the caller must // have done something wrong!) dlen = len; vim_free(d); } return dlen; } /* * Convert text "ptr[*lenp]" according to "vcp". * Returns the result in allocated memory and sets "*lenp". * When "lenp" is NULL, use NUL terminated strings. * Illegal chars are often changed to "?", unless vcp->vc_fail is set. * When something goes wrong, NULL is returned and "*lenp" is unchanged. */ char_u * string_convert( vimconv_T *vcp, char_u *ptr, int *lenp) { return string_convert_ext(vcp, ptr, lenp, NULL); } /* * Like string_convert(), but when "unconvlenp" is not NULL and there are is * an incomplete sequence at the end it is not converted and "*unconvlenp" is * set to the number of remaining bytes. */ char_u * string_convert_ext( vimconv_T *vcp, char_u *ptr, int *lenp, int *unconvlenp) { char_u *retval = NULL; char_u *d; int len; int i; int l; int c; if (lenp == NULL) len = (int)STRLEN(ptr); else len = *lenp; if (len == 0) return vim_strsave((char_u *)""); switch (vcp->vc_type) { case CONV_TO_UTF8: // latin1 to utf-8 conversion retval = alloc(len * 2 + 1); if (retval == NULL) break; d = retval; for (i = 0; i < len; ++i) { c = ptr[i]; if (c < 0x80) *d++ = c; else { *d++ = 0xc0 + ((unsigned)c >> 6); *d++ = 0x80 + (c & 0x3f); } } *d = NUL; if (lenp != NULL) *lenp = (int)(d - retval); break; case CONV_9_TO_UTF8: // latin9 to utf-8 conversion retval = alloc(len * 3 + 1); if (retval == NULL) break; d = retval; for (i = 0; i < len; ++i) { c = ptr[i]; switch (c) { case 0xa4: c = 0x20ac; break; // euro case 0xa6: c = 0x0160; break; // S hat case 0xa8: c = 0x0161; break; // S -hat case 0xb4: c = 0x017d; break; // Z hat case 0xb8: c = 0x017e; break; // Z -hat case 0xbc: c = 0x0152; break; // OE case 0xbd: c = 0x0153; break; // oe case 0xbe: c = 0x0178; break; // Y } d += utf_char2bytes(c, d); } *d = NUL; if (lenp != NULL) *lenp = (int)(d - retval); break; case CONV_TO_LATIN1: // utf-8 to latin1 conversion case CONV_TO_LATIN9: // utf-8 to latin9 conversion retval = alloc(len + 1); if (retval == NULL) break; d = retval; for (i = 0; i < len; ++i) { l = utf_ptr2len_len(ptr + i, len - i); if (l == 0) *d++ = NUL; else if (l == 1) { int l_w = utf8len_tab_zero[ptr[i]]; if (l_w == 0) { // Illegal utf-8 byte cannot be converted vim_free(retval); return NULL; } if (unconvlenp != NULL && l_w > len - i) { // Incomplete sequence at the end. *unconvlenp = len - i; break; } *d++ = ptr[i]; } else { c = utf_ptr2char(ptr + i); if (vcp->vc_type == CONV_TO_LATIN9) switch (c) { case 0x20ac: c = 0xa4; break; // euro case 0x0160: c = 0xa6; break; // S hat case 0x0161: c = 0xa8; break; // S -hat case 0x017d: c = 0xb4; break; // Z hat case 0x017e: c = 0xb8; break; // Z -hat case 0x0152: c = 0xbc; break; // OE case 0x0153: c = 0xbd; break; // oe case 0x0178: c = 0xbe; break; // Y case 0xa4: case 0xa6: case 0xa8: case 0xb4: case 0xb8: case 0xbc: case 0xbd: case 0xbe: c = 0x100; break; // not in latin9 } if (!utf_iscomposing(c)) // skip composing chars { if (c < 0x100) *d++ = c; else if (vcp->vc_fail) { vim_free(retval); return NULL; } else { *d++ = 0xbf; if (utf_char2cells(c) > 1) *d++ = '?'; } } i += l - 1; } } *d = NUL; if (lenp != NULL) *lenp = (int)(d - retval); break; # ifdef MACOS_CONVERT case CONV_MAC_LATIN1: retval = mac_string_convert(ptr, len, lenp, vcp->vc_fail, 'm', 'l', unconvlenp); break; case CONV_LATIN1_MAC: retval = mac_string_convert(ptr, len, lenp, vcp->vc_fail, 'l', 'm', unconvlenp); break; case CONV_MAC_UTF8: retval = mac_string_convert(ptr, len, lenp, vcp->vc_fail, 'm', 'u', unconvlenp); break; case CONV_UTF8_MAC: retval = mac_string_convert(ptr, len, lenp, vcp->vc_fail, 'u', 'm', unconvlenp); break; # endif # ifdef USE_ICONV case CONV_ICONV: // conversion with output_conv.vc_fd retval = iconv_string(vcp, ptr, len, unconvlenp, lenp); break; # endif # ifdef MSWIN case CONV_CODEPAGE: // codepage -> codepage { int retlen; int tmp_len; short_u *tmp; // 1. codepage/UTF-8 -> ucs-2. if (vcp->vc_cpfrom == 0) tmp_len = utf8_to_utf16(ptr, len, NULL, NULL); else { tmp_len = MultiByteToWideChar(vcp->vc_cpfrom, unconvlenp ? MB_ERR_INVALID_CHARS : 0, (char *)ptr, len, 0, 0); if (tmp_len == 0 && GetLastError() == ERROR_NO_UNICODE_TRANSLATION) { if (lenp != NULL) *lenp = 0; if (unconvlenp != NULL) *unconvlenp = len; retval = alloc(1); if (retval) retval[0] = NUL; return retval; } } tmp = ALLOC_MULT(short_u, tmp_len); if (tmp == NULL) break; if (vcp->vc_cpfrom == 0) utf8_to_utf16(ptr, len, tmp, unconvlenp); else MultiByteToWideChar(vcp->vc_cpfrom, 0, (char *)ptr, len, tmp, tmp_len); // 2. ucs-2 -> codepage/UTF-8. if (vcp->vc_cpto == 0) retlen = utf16_to_utf8(tmp, tmp_len, NULL); else retlen = WideCharToMultiByte(vcp->vc_cpto, 0, tmp, tmp_len, 0, 0, 0, 0); retval = alloc(retlen + 1); if (retval != NULL) { if (vcp->vc_cpto == 0) utf16_to_utf8(tmp, tmp_len, retval); else WideCharToMultiByte(vcp->vc_cpto, 0, tmp, tmp_len, (char *)retval, retlen, 0, 0); retval[retlen] = NUL; if (lenp != NULL) *lenp = retlen; } vim_free(tmp); break; } # endif } return retval; }