Mercurial > vim
view src/getchar.c @ 17621:b5fcb04abf6a
Added tag v8.1.1807 for changeset 072efa9ca8758832a931deab2473bbf62f6ca50d
author | Bram Moolenaar <Bram@vim.org> |
---|---|
date | Sun, 04 Aug 2019 15:15:07 +0200 |
parents | 506dd2efcbb2 |
children | 121bdff812b4 |
line wrap: on
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/* vi:set ts=8 sts=4 sw=4 noet: * * VIM - Vi IMproved by Bram Moolenaar * * 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. */ /* * getchar.c * * functions related with getting a character from the user/mapping/redo/... * * manipulations with redo buffer and stuff buffer * mappings and abbreviations */ #include "vim.h" /* * These buffers are used for storing: * - stuffed characters: A command that is translated into another command. * - redo characters: will redo the last change. * - recorded characters: for the "q" command. * * The bytes are stored like in the typeahead buffer: * - K_SPECIAL introduces a special key (two more bytes follow). A literal * K_SPECIAL is stored as K_SPECIAL KS_SPECIAL KE_FILLER. * - CSI introduces a GUI termcap code (also when gui.in_use is FALSE, * otherwise switching the GUI on would make mappings invalid). * A literal CSI is stored as CSI KS_EXTRA KE_CSI. * These translations are also done on multi-byte characters! * * Escaping CSI bytes is done by the system-specific input functions, called * by ui_inchar(). * Escaping K_SPECIAL is done by inchar(). * Un-escaping is done by vgetc(). */ #define MINIMAL_SIZE 20 /* minimal size for b_str */ static buffheader_T redobuff = {{NULL, {NUL}}, NULL, 0, 0}; static buffheader_T old_redobuff = {{NULL, {NUL}}, NULL, 0, 0}; static buffheader_T recordbuff = {{NULL, {NUL}}, NULL, 0, 0}; static int typeahead_char = 0; /* typeahead char that's not flushed */ /* * when block_redo is TRUE redo buffer will not be changed * used by edit() to repeat insertions and 'V' command for redoing */ static int block_redo = FALSE; static int KeyNoremap = 0; /* remapping flags */ /* * Variables used by vgetorpeek() and flush_buffers(). * * typebuf.tb_buf[] contains all characters that are not consumed yet. * typebuf.tb_buf[typebuf.tb_off] is the first valid character. * typebuf.tb_buf[typebuf.tb_off + typebuf.tb_len - 1] is the last valid char. * typebuf.tb_buf[typebuf.tb_off + typebuf.tb_len] must be NUL. * The head of the buffer may contain the result of mappings, abbreviations * and @a commands. The length of this part is typebuf.tb_maplen. * typebuf.tb_silent is the part where <silent> applies. * After the head are characters that come from the terminal. * typebuf.tb_no_abbr_cnt is the number of characters in typebuf.tb_buf that * should not be considered for abbreviations. * Some parts of typebuf.tb_buf may not be mapped. These parts are remembered * in typebuf.tb_noremap[], which is the same length as typebuf.tb_buf and * contains RM_NONE for the characters that are not to be remapped. * typebuf.tb_noremap[typebuf.tb_off] is the first valid flag. * (typebuf has been put in globals.h, because check_termcode() needs it). */ #define RM_YES 0 /* tb_noremap: remap */ #define RM_NONE 1 /* tb_noremap: don't remap */ #define RM_SCRIPT 2 /* tb_noremap: remap local script mappings */ #define RM_ABBR 4 /* tb_noremap: don't remap, do abbrev. */ /* typebuf.tb_buf has three parts: room in front (for result of mappings), the * middle for typeahead and room for new characters (which needs to be 3 * * MAXMAPLEN) for the Amiga). */ #define TYPELEN_INIT (5 * (MAXMAPLEN + 3)) static char_u typebuf_init[TYPELEN_INIT]; /* initial typebuf.tb_buf */ static char_u noremapbuf_init[TYPELEN_INIT]; /* initial typebuf.tb_noremap */ static int last_recorded_len = 0; /* number of last recorded chars */ static int read_readbuf(buffheader_T *buf, int advance); static void init_typebuf(void); static void may_sync_undo(void); static void closescript(void); static int vgetorpeek(int); static int inchar(char_u *buf, int maxlen, long wait_time); /* * Free and clear a buffer. */ void free_buff(buffheader_T *buf) { buffblock_T *p, *np; for (p = buf->bh_first.b_next; p != NULL; p = np) { np = p->b_next; vim_free(p); } buf->bh_first.b_next = NULL; } /* * Return the contents of a buffer as a single string. * K_SPECIAL and CSI in the returned string are escaped. */ static char_u * get_buffcont( buffheader_T *buffer, int dozero) /* count == zero is not an error */ { long_u count = 0; char_u *p = NULL; char_u *p2; char_u *str; buffblock_T *bp; /* compute the total length of the string */ for (bp = buffer->bh_first.b_next; bp != NULL; bp = bp->b_next) count += (long_u)STRLEN(bp->b_str); if ((count || dozero) && (p = alloc(count + 1)) != NULL) { p2 = p; for (bp = buffer->bh_first.b_next; bp != NULL; bp = bp->b_next) for (str = bp->b_str; *str; ) *p2++ = *str++; *p2 = NUL; } return (p); } /* * Return the contents of the record buffer as a single string * and clear the record buffer. * K_SPECIAL and CSI in the returned string are escaped. */ char_u * get_recorded(void) { char_u *p; size_t len; p = get_buffcont(&recordbuff, TRUE); free_buff(&recordbuff); /* * Remove the characters that were added the last time, these must be the * (possibly mapped) characters that stopped the recording. */ len = STRLEN(p); if ((int)len >= last_recorded_len) { len -= last_recorded_len; p[len] = NUL; } /* * When stopping recording from Insert mode with CTRL-O q, also remove the * CTRL-O. */ if (len > 0 && restart_edit != 0 && p[len - 1] == Ctrl_O) p[len - 1] = NUL; return (p); } /* * Return the contents of the redo buffer as a single string. * K_SPECIAL and CSI in the returned string are escaped. */ char_u * get_inserted(void) { return get_buffcont(&redobuff, FALSE); } /* * Add string "s" after the current block of buffer "buf". * K_SPECIAL and CSI should have been escaped already. */ static void add_buff( buffheader_T *buf, char_u *s, long slen) /* length of "s" or -1 */ { buffblock_T *p; long_u len; if (slen < 0) slen = (long)STRLEN(s); if (slen == 0) /* don't add empty strings */ return; if (buf->bh_first.b_next == NULL) /* first add to list */ { buf->bh_space = 0; buf->bh_curr = &(buf->bh_first); } else if (buf->bh_curr == NULL) /* buffer has already been read */ { iemsg(_("E222: Add to read buffer")); return; } else if (buf->bh_index != 0) mch_memmove(buf->bh_first.b_next->b_str, buf->bh_first.b_next->b_str + buf->bh_index, STRLEN(buf->bh_first.b_next->b_str + buf->bh_index) + 1); buf->bh_index = 0; if (buf->bh_space >= (int)slen) { len = (long_u)STRLEN(buf->bh_curr->b_str); vim_strncpy(buf->bh_curr->b_str + len, s, (size_t)slen); buf->bh_space -= slen; } else { if (slen < MINIMAL_SIZE) len = MINIMAL_SIZE; else len = slen; p = alloc(sizeof(buffblock_T) + len); if (p == NULL) return; /* no space, just forget it */ buf->bh_space = (int)(len - slen); vim_strncpy(p->b_str, s, (size_t)slen); p->b_next = buf->bh_curr->b_next; buf->bh_curr->b_next = p; buf->bh_curr = p; } return; } /* * Add number "n" to buffer "buf". */ static void add_num_buff(buffheader_T *buf, long n) { char_u number[32]; sprintf((char *)number, "%ld", n); add_buff(buf, number, -1L); } /* * Add character 'c' to buffer "buf". * Translates special keys, NUL, CSI, K_SPECIAL and multibyte characters. */ static void add_char_buff(buffheader_T *buf, int c) { char_u bytes[MB_MAXBYTES + 1]; int len; int i; char_u temp[4]; if (IS_SPECIAL(c)) len = 1; else len = (*mb_char2bytes)(c, bytes); for (i = 0; i < len; ++i) { if (!IS_SPECIAL(c)) c = bytes[i]; if (IS_SPECIAL(c) || c == K_SPECIAL || c == NUL) { /* translate special key code into three byte sequence */ temp[0] = K_SPECIAL; temp[1] = K_SECOND(c); temp[2] = K_THIRD(c); temp[3] = NUL; } #ifdef FEAT_GUI else if (c == CSI) { /* Translate a CSI to a CSI - KS_EXTRA - KE_CSI sequence */ temp[0] = CSI; temp[1] = KS_EXTRA; temp[2] = (int)KE_CSI; temp[3] = NUL; } #endif else { temp[0] = c; temp[1] = NUL; } add_buff(buf, temp, -1L); } } /* First read ahead buffer. Used for translated commands. */ static buffheader_T readbuf1 = {{NULL, {NUL}}, NULL, 0, 0}; /* Second read ahead buffer. Used for redo. */ static buffheader_T readbuf2 = {{NULL, {NUL}}, NULL, 0, 0}; /* * Get one byte from the read buffers. Use readbuf1 one first, use readbuf2 * if that one is empty. * If advance == TRUE go to the next char. * No translation is done K_SPECIAL and CSI are escaped. */ static int read_readbuffers(int advance) { int c; c = read_readbuf(&readbuf1, advance); if (c == NUL) c = read_readbuf(&readbuf2, advance); return c; } static int read_readbuf(buffheader_T *buf, int advance) { char_u c; buffblock_T *curr; if (buf->bh_first.b_next == NULL) /* buffer is empty */ return NUL; curr = buf->bh_first.b_next; c = curr->b_str[buf->bh_index]; if (advance) { if (curr->b_str[++buf->bh_index] == NUL) { buf->bh_first.b_next = curr->b_next; vim_free(curr); buf->bh_index = 0; } } return c; } /* * Prepare the read buffers for reading (if they contain something). */ static void start_stuff(void) { if (readbuf1.bh_first.b_next != NULL) { readbuf1.bh_curr = &(readbuf1.bh_first); readbuf1.bh_space = 0; } if (readbuf2.bh_first.b_next != NULL) { readbuf2.bh_curr = &(readbuf2.bh_first); readbuf2.bh_space = 0; } } /* * Return TRUE if the stuff buffer is empty. */ int stuff_empty(void) { return (readbuf1.bh_first.b_next == NULL && readbuf2.bh_first.b_next == NULL); } #if defined(FEAT_EVAL) || defined(PROTO) /* * Return TRUE if readbuf1 is empty. There may still be redo characters in * redbuf2. */ int readbuf1_empty(void) { return (readbuf1.bh_first.b_next == NULL); } #endif /* * Set a typeahead character that won't be flushed. */ void typeahead_noflush(int c) { typeahead_char = c; } /* * Remove the contents of the stuff buffer and the mapped characters in the * typeahead buffer (used in case of an error). If "flush_typeahead" is true, * flush all typeahead characters (used when interrupted by a CTRL-C). */ void flush_buffers(flush_buffers_T flush_typeahead) { init_typebuf(); start_stuff(); while (read_readbuffers(TRUE) != NUL) ; if (flush_typeahead == FLUSH_MINIMAL) { // remove mapped characters at the start only typebuf.tb_off += typebuf.tb_maplen; typebuf.tb_len -= typebuf.tb_maplen; } else { // remove typeahead if (flush_typeahead == FLUSH_INPUT) // We have to get all characters, because we may delete the first // part of an escape sequence. In an xterm we get one char at a // time and we have to get them all. while (inchar(typebuf.tb_buf, typebuf.tb_buflen - 1, 10L) != 0) ; typebuf.tb_off = MAXMAPLEN; typebuf.tb_len = 0; #if defined(FEAT_CLIENTSERVER) || defined(FEAT_EVAL) /* Reset the flag that text received from a client or from feedkeys() * was inserted in the typeahead buffer. */ typebuf_was_filled = FALSE; #endif } typebuf.tb_maplen = 0; typebuf.tb_silent = 0; cmd_silent = FALSE; typebuf.tb_no_abbr_cnt = 0; } /* * The previous contents of the redo buffer is kept in old_redobuffer. * This is used for the CTRL-O <.> command in insert mode. */ void ResetRedobuff(void) { if (!block_redo) { free_buff(&old_redobuff); old_redobuff = redobuff; redobuff.bh_first.b_next = NULL; } } /* * Discard the contents of the redo buffer and restore the previous redo * buffer. */ void CancelRedo(void) { if (!block_redo) { free_buff(&redobuff); redobuff = old_redobuff; old_redobuff.bh_first.b_next = NULL; start_stuff(); while (read_readbuffers(TRUE) != NUL) ; } } /* * Save redobuff and old_redobuff to save_redobuff and save_old_redobuff. * Used before executing autocommands and user functions. */ void saveRedobuff(save_redo_T *save_redo) { char_u *s; save_redo->sr_redobuff = redobuff; redobuff.bh_first.b_next = NULL; save_redo->sr_old_redobuff = old_redobuff; old_redobuff.bh_first.b_next = NULL; /* Make a copy, so that ":normal ." in a function works. */ s = get_buffcont(&save_redo->sr_redobuff, FALSE); if (s != NULL) { add_buff(&redobuff, s, -1L); vim_free(s); } } /* * Restore redobuff and old_redobuff from save_redobuff and save_old_redobuff. * Used after executing autocommands and user functions. */ void restoreRedobuff(save_redo_T *save_redo) { free_buff(&redobuff); redobuff = save_redo->sr_redobuff; free_buff(&old_redobuff); old_redobuff = save_redo->sr_old_redobuff; } /* * Append "s" to the redo buffer. * K_SPECIAL and CSI should already have been escaped. */ void AppendToRedobuff(char_u *s) { if (!block_redo) add_buff(&redobuff, s, -1L); } /* * Append to Redo buffer literally, escaping special characters with CTRL-V. * K_SPECIAL and CSI are escaped as well. */ void AppendToRedobuffLit( char_u *str, int len) /* length of "str" or -1 for up to the NUL */ { char_u *s = str; int c; char_u *start; if (block_redo) return; while (len < 0 ? *s != NUL : s - str < len) { /* Put a string of normal characters in the redo buffer (that's * faster). */ start = s; while (*s >= ' ' #ifndef EBCDIC && *s < DEL /* EBCDIC: all chars above space are normal */ #endif && (len < 0 || s - str < len)) ++s; /* Don't put '0' or '^' as last character, just in case a CTRL-D is * typed next. */ if (*s == NUL && (s[-1] == '0' || s[-1] == '^')) --s; if (s > start) add_buff(&redobuff, start, (long)(s - start)); if (*s == NUL || (len >= 0 && s - str >= len)) break; /* Handle a special or multibyte character. */ if (has_mbyte) /* Handle composing chars separately. */ c = mb_cptr2char_adv(&s); else c = *s++; if (c < ' ' || c == DEL || (*s == NUL && (c == '0' || c == '^'))) add_char_buff(&redobuff, Ctrl_V); /* CTRL-V '0' must be inserted as CTRL-V 048 (EBCDIC: xf0) */ if (*s == NUL && c == '0') #ifdef EBCDIC add_buff(&redobuff, (char_u *)"xf0", 3L); #else add_buff(&redobuff, (char_u *)"048", 3L); #endif else add_char_buff(&redobuff, c); } } /* * Append a character to the redo buffer. * Translates special keys, NUL, CSI, K_SPECIAL and multibyte characters. */ void AppendCharToRedobuff(int c) { if (!block_redo) add_char_buff(&redobuff, c); } /* * Append a number to the redo buffer. */ void AppendNumberToRedobuff(long n) { if (!block_redo) add_num_buff(&redobuff, n); } /* * Append string "s" to the stuff buffer. * CSI and K_SPECIAL must already have been escaped. */ void stuffReadbuff(char_u *s) { add_buff(&readbuf1, s, -1L); } /* * Append string "s" to the redo stuff buffer. * CSI and K_SPECIAL must already have been escaped. */ void stuffRedoReadbuff(char_u *s) { add_buff(&readbuf2, s, -1L); } void stuffReadbuffLen(char_u *s, long len) { add_buff(&readbuf1, s, len); } #if defined(FEAT_EVAL) || defined(PROTO) /* * Stuff "s" into the stuff buffer, leaving special key codes unmodified and * escaping other K_SPECIAL and CSI bytes. * Change CR, LF and ESC into a space. */ void stuffReadbuffSpec(char_u *s) { int c; while (*s != NUL) { if (*s == K_SPECIAL && s[1] != NUL && s[2] != NUL) { /* Insert special key literally. */ stuffReadbuffLen(s, 3L); s += 3; } else { c = mb_ptr2char_adv(&s); if (c == CAR || c == NL || c == ESC) c = ' '; stuffcharReadbuff(c); } } } #endif /* * Append a character to the stuff buffer. * Translates special keys, NUL, CSI, K_SPECIAL and multibyte characters. */ void stuffcharReadbuff(int c) { add_char_buff(&readbuf1, c); } /* * Append a number to the stuff buffer. */ void stuffnumReadbuff(long n) { add_num_buff(&readbuf1, n); } /* * Read a character from the redo buffer. Translates K_SPECIAL, CSI and * multibyte characters. * The redo buffer is left as it is. * If init is TRUE, prepare for redo, return FAIL if nothing to redo, OK * otherwise. * If old is TRUE, use old_redobuff instead of redobuff. */ static int read_redo(int init, int old_redo) { static buffblock_T *bp; static char_u *p; int c; int n; char_u buf[MB_MAXBYTES + 1]; int i; if (init) { if (old_redo) bp = old_redobuff.bh_first.b_next; else bp = redobuff.bh_first.b_next; if (bp == NULL) return FAIL; p = bp->b_str; return OK; } if ((c = *p) != NUL) { /* Reverse the conversion done by add_char_buff() */ /* For a multi-byte character get all the bytes and return the * converted character. */ if (has_mbyte && (c != K_SPECIAL || p[1] == KS_SPECIAL)) n = MB_BYTE2LEN_CHECK(c); else n = 1; for (i = 0; ; ++i) { if (c == K_SPECIAL) /* special key or escaped K_SPECIAL */ { c = TO_SPECIAL(p[1], p[2]); p += 2; } #ifdef FEAT_GUI if (c == CSI) /* escaped CSI */ p += 2; #endif if (*++p == NUL && bp->b_next != NULL) { bp = bp->b_next; p = bp->b_str; } buf[i] = c; if (i == n - 1) /* last byte of a character */ { if (n != 1) c = (*mb_ptr2char)(buf); break; } c = *p; if (c == NUL) /* cannot happen? */ break; } } return c; } /* * Copy the rest of the redo buffer into the stuff buffer (in a slow way). * If old_redo is TRUE, use old_redobuff instead of redobuff. * The escaped K_SPECIAL and CSI are copied without translation. */ static void copy_redo(int old_redo) { int c; while ((c = read_redo(FALSE, old_redo)) != NUL) add_char_buff(&readbuf2, c); } /* * Stuff the redo buffer into readbuf2. * Insert the redo count into the command. * If "old_redo" is TRUE, the last but one command is repeated * instead of the last command (inserting text). This is used for * CTRL-O <.> in insert mode * * return FAIL for failure, OK otherwise */ int start_redo(long count, int old_redo) { int c; /* init the pointers; return if nothing to redo */ if (read_redo(TRUE, old_redo) == FAIL) return FAIL; c = read_redo(FALSE, old_redo); /* copy the buffer name, if present */ if (c == '"') { add_buff(&readbuf2, (char_u *)"\"", 1L); c = read_redo(FALSE, old_redo); /* if a numbered buffer is used, increment the number */ if (c >= '1' && c < '9') ++c; add_char_buff(&readbuf2, c); /* the expression register should be re-evaluated */ if (c == '=') { add_char_buff(&readbuf2, CAR); cmd_silent = TRUE; } c = read_redo(FALSE, old_redo); } if (c == 'v') /* redo Visual */ { VIsual = curwin->w_cursor; VIsual_active = TRUE; VIsual_select = FALSE; VIsual_reselect = TRUE; redo_VIsual_busy = TRUE; c = read_redo(FALSE, old_redo); } /* try to enter the count (in place of a previous count) */ if (count) { while (VIM_ISDIGIT(c)) /* skip "old" count */ c = read_redo(FALSE, old_redo); add_num_buff(&readbuf2, count); } /* copy from the redo buffer into the stuff buffer */ add_char_buff(&readbuf2, c); copy_redo(old_redo); return OK; } /* * Repeat the last insert (R, o, O, a, A, i or I command) by stuffing * the redo buffer into readbuf2. * return FAIL for failure, OK otherwise */ int start_redo_ins(void) { int c; if (read_redo(TRUE, FALSE) == FAIL) return FAIL; start_stuff(); /* skip the count and the command character */ while ((c = read_redo(FALSE, FALSE)) != NUL) { if (vim_strchr((char_u *)"AaIiRrOo", c) != NULL) { if (c == 'O' || c == 'o') add_buff(&readbuf2, NL_STR, -1L); break; } } /* copy the typed text from the redo buffer into the stuff buffer */ copy_redo(FALSE); block_redo = TRUE; return OK; } void stop_redo_ins(void) { block_redo = FALSE; } /* * Initialize typebuf.tb_buf to point to typebuf_init. * alloc() cannot be used here: In out-of-memory situations it would * be impossible to type anything. */ static void init_typebuf(void) { if (typebuf.tb_buf == NULL) { typebuf.tb_buf = typebuf_init; typebuf.tb_noremap = noremapbuf_init; typebuf.tb_buflen = TYPELEN_INIT; typebuf.tb_len = 0; typebuf.tb_off = MAXMAPLEN + 4; typebuf.tb_change_cnt = 1; } } /* * Returns TRUE when keys cannot be remapped. */ int noremap_keys(void) { return KeyNoremap & (RM_NONE|RM_SCRIPT); } /* * Insert a string in position 'offset' in the typeahead buffer (for "@r" * and ":normal" command, vgetorpeek() and check_termcode()). * * If noremap is REMAP_YES, new string can be mapped again. * If noremap is REMAP_NONE, new string cannot be mapped again. * If noremap is REMAP_SKIP, fist char of new string cannot be mapped again, * but abbreviations are allowed. * If noremap is REMAP_SCRIPT, new string cannot be mapped again, except for * script-local mappings. * If noremap is > 0, that many characters of the new string cannot be mapped. * * If nottyped is TRUE, the string does not return KeyTyped (don't use when * offset is non-zero!). * * If silent is TRUE, cmd_silent is set when the characters are obtained. * * return FAIL for failure, OK otherwise */ int ins_typebuf( char_u *str, int noremap, int offset, int nottyped, int silent) { char_u *s1, *s2; int newlen; int addlen; int i; int newoff; int val; int nrm; init_typebuf(); if (++typebuf.tb_change_cnt == 0) typebuf.tb_change_cnt = 1; addlen = (int)STRLEN(str); if (offset == 0 && addlen <= typebuf.tb_off) { /* * Easy case: there is room in front of typebuf.tb_buf[typebuf.tb_off] */ typebuf.tb_off -= addlen; mch_memmove(typebuf.tb_buf + typebuf.tb_off, str, (size_t)addlen); } else if (typebuf.tb_len == 0 && typebuf.tb_buflen >= addlen + 3 * (MAXMAPLEN + 4)) { /* * Buffer is empty and string fits in the existing buffer. * Leave some space before and after, if possible. */ typebuf.tb_off = (typebuf.tb_buflen - addlen - 3 * (MAXMAPLEN + 4)) / 2; mch_memmove(typebuf.tb_buf + typebuf.tb_off, str, (size_t)addlen); } else { /* * Need to allocate a new buffer. * In typebuf.tb_buf there must always be room for 3 * (MAXMAPLEN + 4) * characters. We add some extra room to avoid having to allocate too * often. */ newoff = MAXMAPLEN + 4; newlen = typebuf.tb_len + addlen + newoff + 4 * (MAXMAPLEN + 4); if (newlen < 0) /* string is getting too long */ { emsg(_(e_toocompl)); /* also calls flush_buffers */ setcursor(); return FAIL; } s1 = alloc(newlen); if (s1 == NULL) /* out of memory */ return FAIL; s2 = alloc(newlen); if (s2 == NULL) /* out of memory */ { vim_free(s1); return FAIL; } typebuf.tb_buflen = newlen; /* copy the old chars, before the insertion point */ mch_memmove(s1 + newoff, typebuf.tb_buf + typebuf.tb_off, (size_t)offset); /* copy the new chars */ mch_memmove(s1 + newoff + offset, str, (size_t)addlen); /* copy the old chars, after the insertion point, including the NUL at * the end */ mch_memmove(s1 + newoff + offset + addlen, typebuf.tb_buf + typebuf.tb_off + offset, (size_t)(typebuf.tb_len - offset + 1)); if (typebuf.tb_buf != typebuf_init) vim_free(typebuf.tb_buf); typebuf.tb_buf = s1; mch_memmove(s2 + newoff, typebuf.tb_noremap + typebuf.tb_off, (size_t)offset); mch_memmove(s2 + newoff + offset + addlen, typebuf.tb_noremap + typebuf.tb_off + offset, (size_t)(typebuf.tb_len - offset)); if (typebuf.tb_noremap != noremapbuf_init) vim_free(typebuf.tb_noremap); typebuf.tb_noremap = s2; typebuf.tb_off = newoff; } typebuf.tb_len += addlen; /* If noremap == REMAP_SCRIPT: do remap script-local mappings. */ if (noremap == REMAP_SCRIPT) val = RM_SCRIPT; else if (noremap == REMAP_SKIP) val = RM_ABBR; else val = RM_NONE; /* * Adjust typebuf.tb_noremap[] for the new characters: * If noremap == REMAP_NONE or REMAP_SCRIPT: new characters are * (sometimes) not remappable * If noremap == REMAP_YES: all the new characters are mappable * If noremap > 0: "noremap" characters are not remappable, the rest * mappable */ if (noremap == REMAP_SKIP) nrm = 1; else if (noremap < 0) nrm = addlen; else nrm = noremap; for (i = 0; i < addlen; ++i) typebuf.tb_noremap[typebuf.tb_off + i + offset] = (--nrm >= 0) ? val : RM_YES; /* tb_maplen and tb_silent only remember the length of mapped and/or * silent mappings at the start of the buffer, assuming that a mapped * sequence doesn't result in typed characters. */ if (nottyped || typebuf.tb_maplen > offset) typebuf.tb_maplen += addlen; if (silent || typebuf.tb_silent > offset) { typebuf.tb_silent += addlen; cmd_silent = TRUE; } if (typebuf.tb_no_abbr_cnt && offset == 0) /* and not used for abbrev.s */ typebuf.tb_no_abbr_cnt += addlen; return OK; } /* * Put character "c" back into the typeahead buffer. * Can be used for a character obtained by vgetc() that needs to be put back. * Uses cmd_silent, KeyTyped and KeyNoremap to restore the flags belonging to * the char. */ void ins_char_typebuf(int c) { char_u buf[MB_MAXBYTES + 1]; if (IS_SPECIAL(c)) { buf[0] = K_SPECIAL; buf[1] = K_SECOND(c); buf[2] = K_THIRD(c); buf[3] = NUL; } else buf[(*mb_char2bytes)(c, buf)] = NUL; (void)ins_typebuf(buf, KeyNoremap, 0, !KeyTyped, cmd_silent); } /* * Return TRUE if the typeahead buffer was changed (while waiting for a * character to arrive). Happens when a message was received from a client or * from feedkeys(). * But check in a more generic way to avoid trouble: When "typebuf.tb_buf" * changed it was reallocated and the old pointer can no longer be used. * Or "typebuf.tb_off" may have been changed and we would overwrite characters * that was just added. */ int typebuf_changed( int tb_change_cnt) /* old value of typebuf.tb_change_cnt */ { return (tb_change_cnt != 0 && (typebuf.tb_change_cnt != tb_change_cnt #if defined(FEAT_CLIENTSERVER) || defined(FEAT_EVAL) || typebuf_was_filled #endif )); } /* * Return TRUE if there are no characters in the typeahead buffer that have * not been typed (result from a mapping or come from ":normal"). */ int typebuf_typed(void) { return typebuf.tb_maplen == 0; } /* * Return the number of characters that are mapped (or not typed). */ int typebuf_maplen(void) { return typebuf.tb_maplen; } /* * remove "len" characters from typebuf.tb_buf[typebuf.tb_off + offset] */ void del_typebuf(int len, int offset) { int i; if (len == 0) return; /* nothing to do */ typebuf.tb_len -= len; /* * Easy case: Just increase typebuf.tb_off. */ if (offset == 0 && typebuf.tb_buflen - (typebuf.tb_off + len) >= 3 * MAXMAPLEN + 3) typebuf.tb_off += len; /* * Have to move the characters in typebuf.tb_buf[] and typebuf.tb_noremap[] */ else { i = typebuf.tb_off + offset; /* * Leave some extra room at the end to avoid reallocation. */ if (typebuf.tb_off > MAXMAPLEN) { mch_memmove(typebuf.tb_buf + MAXMAPLEN, typebuf.tb_buf + typebuf.tb_off, (size_t)offset); mch_memmove(typebuf.tb_noremap + MAXMAPLEN, typebuf.tb_noremap + typebuf.tb_off, (size_t)offset); typebuf.tb_off = MAXMAPLEN; } /* adjust typebuf.tb_buf (include the NUL at the end) */ mch_memmove(typebuf.tb_buf + typebuf.tb_off + offset, typebuf.tb_buf + i + len, (size_t)(typebuf.tb_len - offset + 1)); /* adjust typebuf.tb_noremap[] */ mch_memmove(typebuf.tb_noremap + typebuf.tb_off + offset, typebuf.tb_noremap + i + len, (size_t)(typebuf.tb_len - offset)); } if (typebuf.tb_maplen > offset) /* adjust tb_maplen */ { if (typebuf.tb_maplen < offset + len) typebuf.tb_maplen = offset; else typebuf.tb_maplen -= len; } if (typebuf.tb_silent > offset) /* adjust tb_silent */ { if (typebuf.tb_silent < offset + len) typebuf.tb_silent = offset; else typebuf.tb_silent -= len; } if (typebuf.tb_no_abbr_cnt > offset) /* adjust tb_no_abbr_cnt */ { if (typebuf.tb_no_abbr_cnt < offset + len) typebuf.tb_no_abbr_cnt = offset; else typebuf.tb_no_abbr_cnt -= len; } #if defined(FEAT_CLIENTSERVER) || defined(FEAT_EVAL) /* Reset the flag that text received from a client or from feedkeys() * was inserted in the typeahead buffer. */ typebuf_was_filled = FALSE; #endif if (++typebuf.tb_change_cnt == 0) typebuf.tb_change_cnt = 1; } /* * Write typed characters to script file. * If recording is on put the character in the recordbuffer. */ static void gotchars(char_u *chars, int len) { char_u *s = chars; int i; static char_u buf[4]; static int buflen = 0; int todo = len; while (todo--) { buf[buflen++] = *s++; // When receiving a special key sequence, store it until we have all // the bytes and we can decide what to do with it. if (buflen == 1 && buf[0] == K_SPECIAL) continue; if (buflen == 2) continue; if (buflen == 3 && buf[1] == KS_EXTRA && (buf[2] == KE_FOCUSGAINED || buf[2] == KE_FOCUSLOST)) { // Drop K_FOCUSGAINED and K_FOCUSLOST, they are not useful in a // recording. buflen = 0; continue; } /* Handle one byte at a time; no translation to be done. */ for (i = 0; i < buflen; ++i) updatescript(buf[i]); if (reg_recording != 0) { buf[buflen] = NUL; add_buff(&recordbuff, buf, (long)buflen); /* remember how many chars were last recorded */ last_recorded_len += buflen; } buflen = 0; } may_sync_undo(); #ifdef FEAT_EVAL /* output "debug mode" message next time in debug mode */ debug_did_msg = FALSE; #endif /* Since characters have been typed, consider the following to be in * another mapping. Search string will be kept in history. */ ++maptick; } /* * Sync undo. Called when typed characters are obtained from the typeahead * buffer, or when a menu is used. * Do not sync: * - In Insert mode, unless cursor key has been used. * - While reading a script file. * - When no_u_sync is non-zero. */ static void may_sync_undo(void) { if ((!(State & (INSERT + CMDLINE)) || arrow_used) && scriptin[curscript] == NULL) u_sync(FALSE); } /* * Make "typebuf" empty and allocate new buffers. * Returns FAIL when out of memory. */ int alloc_typebuf(void) { typebuf.tb_buf = alloc(TYPELEN_INIT); typebuf.tb_noremap = alloc(TYPELEN_INIT); if (typebuf.tb_buf == NULL || typebuf.tb_noremap == NULL) { free_typebuf(); return FAIL; } typebuf.tb_buflen = TYPELEN_INIT; typebuf.tb_off = MAXMAPLEN + 4; /* can insert without realloc */ typebuf.tb_len = 0; typebuf.tb_maplen = 0; typebuf.tb_silent = 0; typebuf.tb_no_abbr_cnt = 0; if (++typebuf.tb_change_cnt == 0) typebuf.tb_change_cnt = 1; return OK; } /* * Free the buffers of "typebuf". */ void free_typebuf(void) { if (typebuf.tb_buf == typebuf_init) internal_error("Free typebuf 1"); else vim_free(typebuf.tb_buf); if (typebuf.tb_noremap == noremapbuf_init) internal_error("Free typebuf 2"); else vim_free(typebuf.tb_noremap); } /* * When doing ":so! file", the current typeahead needs to be saved, and * restored when "file" has been read completely. */ static typebuf_T saved_typebuf[NSCRIPT]; int save_typebuf(void) { init_typebuf(); saved_typebuf[curscript] = typebuf; /* If out of memory: restore typebuf and close file. */ if (alloc_typebuf() == FAIL) { closescript(); return FAIL; } return OK; } static int old_char = -1; /* character put back by vungetc() */ static int old_mod_mask; /* mod_mask for ungotten character */ #ifdef FEAT_MOUSE static int old_mouse_row; /* mouse_row related to old_char */ static int old_mouse_col; /* mouse_col related to old_char */ #endif /* * Save all three kinds of typeahead, so that the user must type at a prompt. */ void save_typeahead(tasave_T *tp) { tp->save_typebuf = typebuf; tp->typebuf_valid = (alloc_typebuf() == OK); if (!tp->typebuf_valid) typebuf = tp->save_typebuf; tp->old_char = old_char; tp->old_mod_mask = old_mod_mask; old_char = -1; tp->save_readbuf1 = readbuf1; readbuf1.bh_first.b_next = NULL; tp->save_readbuf2 = readbuf2; readbuf2.bh_first.b_next = NULL; # ifdef USE_INPUT_BUF tp->save_inputbuf = get_input_buf(); # endif } /* * Restore the typeahead to what it was before calling save_typeahead(). * The allocated memory is freed, can only be called once! */ void restore_typeahead(tasave_T *tp) { if (tp->typebuf_valid) { free_typebuf(); typebuf = tp->save_typebuf; } old_char = tp->old_char; old_mod_mask = tp->old_mod_mask; free_buff(&readbuf1); readbuf1 = tp->save_readbuf1; free_buff(&readbuf2); readbuf2 = tp->save_readbuf2; # ifdef USE_INPUT_BUF set_input_buf(tp->save_inputbuf); # endif } /* * Open a new script file for the ":source!" command. */ void openscript( char_u *name, int directly) /* when TRUE execute directly */ { if (curscript + 1 == NSCRIPT) { emsg(_(e_nesting)); return; } // Disallow sourcing a file in the sandbox, the commands would be executed // later, possibly outside of the sandbox. if (check_secure()) return; #ifdef FEAT_EVAL if (ignore_script) /* Not reading from script, also don't open one. Warning message? */ return; #endif if (scriptin[curscript] != NULL) /* already reading script */ ++curscript; /* use NameBuff for expanded name */ expand_env(name, NameBuff, MAXPATHL); if ((scriptin[curscript] = mch_fopen((char *)NameBuff, READBIN)) == NULL) { semsg(_(e_notopen), name); if (curscript) --curscript; return; } if (save_typebuf() == FAIL) return; /* * Execute the commands from the file right now when using ":source!" * after ":global" or ":argdo" or in a loop. Also when another command * follows. This means the display won't be updated. Don't do this * always, "make test" would fail. */ if (directly) { oparg_T oa; int oldcurscript; int save_State = State; int save_restart_edit = restart_edit; int save_insertmode = p_im; int save_finish_op = finish_op; int save_msg_scroll = msg_scroll; State = NORMAL; msg_scroll = FALSE; /* no msg scrolling in Normal mode */ restart_edit = 0; /* don't go to Insert mode */ p_im = FALSE; /* don't use 'insertmode' */ clear_oparg(&oa); finish_op = FALSE; oldcurscript = curscript; do { update_topline_cursor(); // update cursor position and topline normal_cmd(&oa, FALSE); // execute one command vpeekc(); // check for end of file } while (scriptin[oldcurscript] != NULL); State = save_State; msg_scroll = save_msg_scroll; restart_edit = save_restart_edit; p_im = save_insertmode; finish_op = save_finish_op; } } /* * Close the currently active input script. */ static void closescript(void) { free_typebuf(); typebuf = saved_typebuf[curscript]; fclose(scriptin[curscript]); scriptin[curscript] = NULL; if (curscript > 0) --curscript; } #if defined(EXITFREE) || defined(PROTO) void close_all_scripts(void) { while (scriptin[0] != NULL) closescript(); } #endif #if defined(FEAT_INS_EXPAND) || defined(PROTO) /* * Return TRUE when reading keys from a script file. */ int using_script(void) { return scriptin[curscript] != NULL; } #endif /* * This function is called just before doing a blocking wait. Thus after * waiting 'updatetime' for a character to arrive. */ void before_blocking(void) { updatescript(0); #ifdef FEAT_EVAL if (may_garbage_collect) garbage_collect(FALSE); #endif } /* * updatescipt() is called when a character can be written into the script file * or when we have waited some time for a character (c == 0) * * All the changed memfiles are synced if c == 0 or when the number of typed * characters reaches 'updatecount' and 'updatecount' is non-zero. */ void updatescript(int c) { static int count = 0; if (c && scriptout) putc(c, scriptout); if (c == 0 || (p_uc > 0 && ++count >= p_uc)) { ml_sync_all(c == 0, TRUE); count = 0; } } /* * Get the next input character. * Can return a special key or a multi-byte character. * Can return NUL when called recursively, use safe_vgetc() if that's not * wanted. * This translates escaped K_SPECIAL and CSI bytes to a K_SPECIAL or CSI byte. * Collects the bytes of a multibyte character into the whole character. * Returns the modifiers in the global "mod_mask". */ int vgetc(void) { int c, c2; int n; char_u buf[MB_MAXBYTES + 1]; int i; #ifdef FEAT_EVAL /* Do garbage collection when garbagecollect() was called previously and * we are now at the toplevel. */ if (may_garbage_collect && want_garbage_collect) garbage_collect(FALSE); #endif /* * If a character was put back with vungetc, it was already processed. * Return it directly. */ if (old_char != -1) { c = old_char; old_char = -1; mod_mask = old_mod_mask; #ifdef FEAT_MOUSE mouse_row = old_mouse_row; mouse_col = old_mouse_col; #endif } else { mod_mask = 0x0; last_recorded_len = 0; for (;;) // this is done twice if there are modifiers { int did_inc = FALSE; if (mod_mask #if defined(FEAT_XIM) && defined(FEAT_GUI_GTK) || im_is_preediting() #endif #if defined(FEAT_TEXT_PROP) || popup_no_mapping() #endif ) { // no mapping after modifier has been read ++no_mapping; ++allow_keys; did_inc = TRUE; // mod_mask may change value } c = vgetorpeek(TRUE); if (did_inc) { --no_mapping; --allow_keys; } // Get two extra bytes for special keys if (c == K_SPECIAL #ifdef FEAT_GUI || (gui.in_use && c == CSI) #endif ) { int save_allow_keys = allow_keys; ++no_mapping; allow_keys = 0; // make sure BS is not found c2 = vgetorpeek(TRUE); // no mapping for these chars c = vgetorpeek(TRUE); --no_mapping; allow_keys = save_allow_keys; if (c2 == KS_MODIFIER) { mod_mask = c; continue; } c = TO_SPECIAL(c2, c); #if defined(FEAT_GUI_MSWIN) && defined(FEAT_MENU) && defined(FEAT_TEAROFF) // Handle K_TEAROFF here, the caller of vgetc() doesn't need to // know that a menu was torn off if ( # ifdef VIMDLL gui.in_use && # endif c == K_TEAROFF) { char_u name[200]; int i; // get menu path, it ends with a <CR> for (i = 0; (c = vgetorpeek(TRUE)) != '\r'; ) { name[i] = c; if (i < 199) ++i; } name[i] = NUL; gui_make_tearoff(name); continue; } #endif #if defined(FEAT_GUI) && defined(FEAT_GUI_GTK) && defined(FEAT_MENU) // GTK: <F10> normally selects the menu, but it's passed until // here to allow mapping it. Intercept and invoke the GTK // behavior if it's not mapped. if (c == K_F10 && gui.menubar != NULL) { gtk_menu_shell_select_first( GTK_MENU_SHELL(gui.menubar), FALSE); continue; } #endif #ifdef FEAT_GUI if (gui.in_use) { // Handle focus event here, so that the caller doesn't // need to know about it. Return K_IGNORE so that we loop // once (needed if 'lazyredraw' is set). if (c == K_FOCUSGAINED || c == K_FOCUSLOST) { ui_focus_change(c == K_FOCUSGAINED); c = K_IGNORE; } // Translate K_CSI to CSI. The special key is only used // to avoid it being recognized as the start of a special // key. if (c == K_CSI) c = CSI; } #endif } // a keypad or special function key was not mapped, use it like // its ASCII equivalent switch (c) { case K_KPLUS: c = '+'; break; case K_KMINUS: c = '-'; break; case K_KDIVIDE: c = '/'; break; case K_KMULTIPLY: c = '*'; break; case K_KENTER: c = CAR; break; case K_KPOINT: #ifdef MSWIN // Can be either '.' or a ',', // depending on the type of keypad. c = MapVirtualKey(VK_DECIMAL, 2); break; #else c = '.'; break; #endif case K_K0: c = '0'; break; case K_K1: c = '1'; break; case K_K2: c = '2'; break; case K_K3: c = '3'; break; case K_K4: c = '4'; break; case K_K5: c = '5'; break; case K_K6: c = '6'; break; case K_K7: c = '7'; break; case K_K8: c = '8'; break; case K_K9: c = '9'; break; case K_XHOME: case K_ZHOME: if (mod_mask == MOD_MASK_SHIFT) { c = K_S_HOME; mod_mask = 0; } else if (mod_mask == MOD_MASK_CTRL) { c = K_C_HOME; mod_mask = 0; } else c = K_HOME; break; case K_XEND: case K_ZEND: if (mod_mask == MOD_MASK_SHIFT) { c = K_S_END; mod_mask = 0; } else if (mod_mask == MOD_MASK_CTRL) { c = K_C_END; mod_mask = 0; } else c = K_END; break; case K_XUP: c = K_UP; break; case K_XDOWN: c = K_DOWN; break; case K_XLEFT: c = K_LEFT; break; case K_XRIGHT: c = K_RIGHT; break; } // For a multi-byte character get all the bytes and return the // converted character. // Note: This will loop until enough bytes are received! if (has_mbyte && (n = MB_BYTE2LEN_CHECK(c)) > 1) { ++no_mapping; buf[0] = c; for (i = 1; i < n; ++i) { buf[i] = vgetorpeek(TRUE); if (buf[i] == K_SPECIAL #ifdef FEAT_GUI || ( # ifdef VIMDLL gui.in_use && # endif buf[i] == CSI) #endif ) { // Must be a K_SPECIAL - KS_SPECIAL - KE_FILLER // sequence, which represents a K_SPECIAL (0x80), // or a CSI - KS_EXTRA - KE_CSI sequence, which // represents a CSI (0x9B), // or a K_SPECIAL - KS_EXTRA - KE_CSI, which is CSI // too. c = vgetorpeek(TRUE); if (vgetorpeek(TRUE) == (int)KE_CSI && c == KS_EXTRA) buf[i] = CSI; } } --no_mapping; c = (*mb_ptr2char)(buf); } break; } } #ifdef FEAT_EVAL /* * In the main loop "may_garbage_collect" can be set to do garbage * collection in the first next vgetc(). It's disabled after that to * avoid internally used Lists and Dicts to be freed. */ may_garbage_collect = FALSE; #endif #ifdef FEAT_BEVAL_TERM if (c != K_MOUSEMOVE && c != K_IGNORE && c != K_CURSORHOLD) { /* Don't trigger 'balloonexpr' unless only the mouse was moved. */ bevalexpr_due_set = FALSE; ui_remove_balloon(); } #endif #ifdef FEAT_TEXT_PROP if (popup_do_filter(c)) c = K_IGNORE; #endif return c; } /* * Like vgetc(), but never return a NUL when called recursively, get a key * directly from the user (ignoring typeahead). */ int safe_vgetc(void) { int c; c = vgetc(); if (c == NUL) c = get_keystroke(); return c; } /* * Like safe_vgetc(), but loop to handle K_IGNORE. * Also ignore scrollbar events. */ int plain_vgetc(void) { int c; do c = safe_vgetc(); while (c == K_IGNORE || c == K_VER_SCROLLBAR || c == K_HOR_SCROLLBAR); if (c == K_PS) /* Only handle the first pasted character. Drop the rest, since we * don't know what to do with it. */ c = bracketed_paste(PASTE_ONE_CHAR, FALSE, NULL); return c; } /* * Check if a character is available, such that vgetc() will not block. * If the next character is a special character or multi-byte, the returned * character is not valid!. * Returns NUL if no character is available. */ int vpeekc(void) { if (old_char != -1) return old_char; return vgetorpeek(FALSE); } #if defined(FEAT_TERMRESPONSE) || defined(FEAT_TERMINAL) || defined(PROTO) /* * Like vpeekc(), but don't allow mapping. Do allow checking for terminal * codes. */ int vpeekc_nomap(void) { int c; ++no_mapping; ++allow_keys; c = vpeekc(); --no_mapping; --allow_keys; return c; } #endif #if defined(FEAT_INS_EXPAND) || defined(FEAT_EVAL) || defined(PROTO) /* * Check if any character is available, also half an escape sequence. * Trick: when no typeahead found, but there is something in the typeahead * buffer, it must be an ESC that is recognized as the start of a key code. */ int vpeekc_any(void) { int c; c = vpeekc(); if (c == NUL && typebuf.tb_len > 0) c = ESC; return c; } #endif /* * Call vpeekc() without causing anything to be mapped. * Return TRUE if a character is available, FALSE otherwise. */ int char_avail(void) { int retval; #ifdef FEAT_EVAL /* When test_override("char_avail", 1) was called pretend there is no * typeahead. */ if (disable_char_avail_for_testing) return FALSE; #endif ++no_mapping; retval = vpeekc(); --no_mapping; return (retval != NUL); } typedef enum { map_result_fail, // failed, break loop map_result_get, // get a character from typeahead map_result_retry, // try to map again map_result_nomatch // no matching mapping, get char } map_result_T; /* * Handle mappings in the typeahead buffer. * - When something was mapped, return map_result_retry for recursive mappings. * - When nothing mapped and typeahead has a character: return map_result_get. * - When there is no match yet, return map_result_nomatch, need to get more * typeahead. */ static int handle_mapping( int *keylenp, int *timedout, int *mapdepth) { mapblock_T *mp = NULL; mapblock_T *mp2; mapblock_T *mp_match; int mp_match_len = 0; int max_mlen = 0; int tb_c1; int mlen; #ifdef FEAT_LANGMAP int nolmaplen; #endif int keylen = *keylenp; int i; int local_State = get_real_state(); /* * Check for a mappable key sequence. * Walk through one maphash[] list until we find an entry that matches. * * Don't look for mappings if: * - no_mapping set: mapping disabled (e.g. for CTRL-V) * - maphash_valid not set: no mappings present. * - typebuf.tb_buf[typebuf.tb_off] should not be remapped * - in insert or cmdline mode and 'paste' option set * - waiting for "hit return to continue" and CR or SPACE typed * - waiting for a char with --more-- * - in Ctrl-X mode, and we get a valid char for that mode */ tb_c1 = typebuf.tb_buf[typebuf.tb_off]; if (no_mapping == 0 && is_maphash_valid() && (no_zero_mapping == 0 || tb_c1 != '0') && (typebuf.tb_maplen == 0 || (p_remap && (typebuf.tb_noremap[typebuf.tb_off] & (RM_NONE|RM_ABBR)) == 0)) && !(p_paste && (State & (INSERT + CMDLINE))) && !(State == HITRETURN && (tb_c1 == CAR || tb_c1 == ' ')) && State != ASKMORE && State != CONFIRM #ifdef FEAT_INS_EXPAND && !((ctrl_x_mode_not_default() && vim_is_ctrl_x_key(tb_c1)) || ((compl_cont_status & CONT_LOCAL) && (tb_c1 == Ctrl_N || tb_c1 == Ctrl_P))) #endif ) { #ifdef FEAT_LANGMAP if (tb_c1 == K_SPECIAL) nolmaplen = 2; else { LANGMAP_ADJUST(tb_c1, (State & (CMDLINE | INSERT)) == 0 && get_real_state() != SELECTMODE); nolmaplen = 0; } #endif // First try buffer-local mappings. mp = get_buf_maphash_list(local_State, tb_c1); mp2 = get_maphash_list(local_State, tb_c1); if (mp == NULL) { // There are no buffer-local mappings. mp = mp2; mp2 = NULL; } /* * Loop until a partly matching mapping is found or all (local) * mappings have been checked. * The longest full match is remembered in "mp_match". * A full match is only accepted if there is no partly match, so "aa" * and "aaa" can both be mapped. */ mp_match = NULL; mp_match_len = 0; for ( ; mp != NULL; mp->m_next == NULL ? (mp = mp2, mp2 = NULL) : (mp = mp->m_next)) { // Only consider an entry if the first character matches and it is // for the current state. // Skip ":lmap" mappings if keys were mapped. if (mp->m_keys[0] == tb_c1 && (mp->m_mode & local_State) && ((mp->m_mode & LANGMAP) == 0 || typebuf.tb_maplen == 0)) { #ifdef FEAT_LANGMAP int nomap = nolmaplen; int c2; #endif // find the match length of this mapping for (mlen = 1; mlen < typebuf.tb_len; ++mlen) { #ifdef FEAT_LANGMAP c2 = typebuf.tb_buf[typebuf.tb_off + mlen]; if (nomap > 0) --nomap; else if (c2 == K_SPECIAL) nomap = 2; else LANGMAP_ADJUST(c2, TRUE); if (mp->m_keys[mlen] != c2) #else if (mp->m_keys[mlen] != typebuf.tb_buf[typebuf.tb_off + mlen]) #endif break; } // Don't allow mapping the first byte(s) of a multi-byte char. // Happens when mapping <M-a> and then changing 'encoding'. // Beware that 0x80 is escaped. { char_u *p1 = mp->m_keys; char_u *p2 = mb_unescape(&p1); if (has_mbyte && p2 != NULL && MB_BYTE2LEN(tb_c1) > MB_PTR2LEN(p2)) mlen = 0; } // Check an entry whether it matches. // - Full match: mlen == keylen // - Partly match: mlen == typebuf.tb_len keylen = mp->m_keylen; if (mlen == keylen || (mlen == typebuf.tb_len && typebuf.tb_len < keylen)) { char_u *s; int n; // If only script-local mappings are allowed, check if the // mapping starts with K_SNR. s = typebuf.tb_noremap + typebuf.tb_off; if (*s == RM_SCRIPT && (mp->m_keys[0] != K_SPECIAL || mp->m_keys[1] != KS_EXTRA || mp->m_keys[2] != (int)KE_SNR)) continue; // If one of the typed keys cannot be remapped, skip the // entry. for (n = mlen; --n >= 0; ) if (*s++ & (RM_NONE|RM_ABBR)) break; if (n >= 0) continue; if (keylen > typebuf.tb_len) { if (!*timedout && !(mp_match != NULL && mp_match->m_nowait)) { // break at a partly match keylen = KEYLEN_PART_MAP; break; } } else if (keylen > mp_match_len) { // found a longer match mp_match = mp; mp_match_len = keylen; } } else // No match; may have to check for termcode at next // character. if (max_mlen < mlen) max_mlen = mlen; } } // If no partly match found, use the longest full match. if (keylen != KEYLEN_PART_MAP) { mp = mp_match; keylen = mp_match_len; } } /* * Check for match with 'pastetoggle' */ if (*p_pt != NUL && mp == NULL && (State & (INSERT|NORMAL))) { for (mlen = 0; mlen < typebuf.tb_len && p_pt[mlen]; ++mlen) if (p_pt[mlen] != typebuf.tb_buf[typebuf.tb_off + mlen]) break; if (p_pt[mlen] == NUL) // match { // write chars to script file(s) if (mlen > typebuf.tb_maplen) gotchars(typebuf.tb_buf + typebuf.tb_off + typebuf.tb_maplen, mlen - typebuf.tb_maplen); del_typebuf(mlen, 0); // remove the chars set_option_value((char_u *)"paste", (long)!p_paste, NULL, 0); if (!(State & INSERT)) { msg_col = 0; msg_row = Rows - 1; msg_clr_eos(); // clear ruler } status_redraw_all(); redraw_statuslines(); showmode(); setcursor(); *keylenp = keylen; return map_result_retry; } // Need more chars for partly match. if (mlen == typebuf.tb_len) keylen = KEYLEN_PART_KEY; else if (max_mlen < mlen) // no match, may have to check for termcode at next character max_mlen = mlen + 1; } if ((mp == NULL || max_mlen >= mp_match_len) && keylen != KEYLEN_PART_MAP) { int save_keylen = keylen; /* * When no matching mapping found or found a non-matching mapping that * matches at least what the matching mapping matched: * Check if we have a terminal code, when: * - mapping is allowed, * - keys have not been mapped, * - and not an ESC sequence, not in insert mode or p_ek is on, * - and when not timed out, */ if ((no_mapping == 0 || allow_keys != 0) && (typebuf.tb_maplen == 0 || (p_remap && typebuf.tb_noremap[ typebuf.tb_off] == RM_YES)) && !*timedout) { keylen = check_termcode(max_mlen + 1, NULL, 0, NULL); // If no termcode matched but 'pastetoggle' matched partially it's // like an incomplete key sequence. if (keylen == 0 && save_keylen == KEYLEN_PART_KEY) keylen = KEYLEN_PART_KEY; // When getting a partial match, but the last characters were not // typed, don't wait for a typed character to complete the // termcode. This helps a lot when a ":normal" command ends in an // ESC. if (keylen < 0 && typebuf.tb_len == typebuf.tb_maplen) keylen = 0; } else keylen = 0; if (keylen == 0) // no matching terminal code { #ifdef AMIGA // check for window bounds report if (typebuf.tb_maplen == 0 && (typebuf.tb_buf[ typebuf.tb_off] & 0xff) == CSI) { char_u *s; for (s = typebuf.tb_buf + typebuf.tb_off + 1; s < typebuf.tb_buf + typebuf.tb_off + typebuf.tb_len && (VIM_ISDIGIT(*s) || *s == ';' || *s == ' '); ++s) ; if (*s == 'r' || *s == '|') // found one { del_typebuf( (int)(s + 1 - (typebuf.tb_buf + typebuf.tb_off)), 0); // get size and redraw screen shell_resized(); *keylenp = keylen; return map_result_retry; } if (*s == NUL) // need more characters keylen = KEYLEN_PART_KEY; } if (keylen >= 0) #endif // When there was a matching mapping and no termcode could be // replaced after another one, use that mapping (loop around). // If there was no mapping at all use the character from the // typeahead buffer right here. if (mp == NULL) { *keylenp = keylen; return map_result_get; // got character, break for loop } } if (keylen > 0) // full matching terminal code { #if defined(FEAT_GUI) && defined(FEAT_MENU) if (typebuf.tb_len >= 2 && typebuf.tb_buf[typebuf.tb_off] == K_SPECIAL && typebuf.tb_buf[typebuf.tb_off + 1] == KS_MENU) { int idx; // Using a menu may cause a break in undo! It's like using // gotchars(), but without recording or writing to a script // file. may_sync_undo(); del_typebuf(3, 0); idx = get_menu_index(current_menu, local_State); if (idx != MENU_INDEX_INVALID) { // In Select mode and a Visual mode menu is used: Switch // to Visual mode temporarily. Append K_SELECT to switch // back to Select mode. if (VIsual_active && VIsual_select && (current_menu->modes & VISUAL)) { VIsual_select = FALSE; (void)ins_typebuf(K_SELECT_STRING, REMAP_NONE, 0, TRUE, FALSE); } ins_typebuf(current_menu->strings[idx], current_menu->noremap[idx], 0, TRUE, current_menu->silent[idx]); } } #endif // FEAT_GUI && FEAT_MENU *keylenp = keylen; return map_result_retry; // try mapping again } // Partial match: get some more characters. When a matching mapping // was found use that one. if (mp == NULL || keylen < 0) keylen = KEYLEN_PART_KEY; else keylen = mp_match_len; } /* * complete match */ if (keylen >= 0 && keylen <= typebuf.tb_len) { char_u *map_str; #ifdef FEAT_EVAL int save_m_expr; int save_m_noremap; int save_m_silent; char_u *save_m_keys; char_u *save_m_str; #else # define save_m_noremap mp->m_noremap # define save_m_silent mp->m_silent #endif // write chars to script file(s) if (keylen > typebuf.tb_maplen) gotchars(typebuf.tb_buf + typebuf.tb_off + typebuf.tb_maplen, keylen - typebuf.tb_maplen); cmd_silent = (typebuf.tb_silent > 0); del_typebuf(keylen, 0); // remove the mapped keys /* * Put the replacement string in front of mapstr. * The depth check catches ":map x y" and ":map y x". */ if (++*mapdepth >= p_mmd) { emsg(_("E223: recursive mapping")); if (State & CMDLINE) redrawcmdline(); else setcursor(); flush_buffers(FLUSH_MINIMAL); *mapdepth = 0; /* for next one */ *keylenp = keylen; return map_result_fail; } /* * In Select mode and a Visual mode mapping is used: Switch to Visual * mode temporarily. Append K_SELECT to switch back to Select mode. */ if (VIsual_active && VIsual_select && (mp->m_mode & VISUAL)) { VIsual_select = FALSE; (void)ins_typebuf(K_SELECT_STRING, REMAP_NONE, 0, TRUE, FALSE); } #ifdef FEAT_EVAL // Copy the values from *mp that are used, because evaluating the // expression may invoke a function that redefines the mapping, thereby // making *mp invalid. save_m_expr = mp->m_expr; save_m_noremap = mp->m_noremap; save_m_silent = mp->m_silent; save_m_keys = NULL; // only saved when needed save_m_str = NULL; // only saved when needed /* * Handle ":map <expr>": evaluate the {rhs} as an expression. Also * save and restore the command line for "normal :". */ if (mp->m_expr) { int save_vgetc_busy = vgetc_busy; int save_may_garbage_collect = may_garbage_collect; vgetc_busy = 0; may_garbage_collect = FALSE; save_m_keys = vim_strsave(mp->m_keys); save_m_str = vim_strsave(mp->m_str); map_str = eval_map_expr(save_m_str, NUL); vgetc_busy = save_vgetc_busy; may_garbage_collect = save_may_garbage_collect; } else #endif map_str = mp->m_str; /* * Insert the 'to' part in the typebuf.tb_buf. * If 'from' field is the same as the start of the 'to' field, don't * remap the first character (but do allow abbreviations). * If m_noremap is set, don't remap the whole 'to' part. */ if (map_str == NULL) i = FAIL; else { int noremap; if (save_m_noremap != REMAP_YES) noremap = save_m_noremap; else if ( #ifdef FEAT_EVAL STRNCMP(map_str, save_m_keys != NULL ? save_m_keys : mp->m_keys, (size_t)keylen) #else STRNCMP(map_str, mp->m_keys, (size_t)keylen) #endif != 0) noremap = REMAP_YES; else noremap = REMAP_SKIP; i = ins_typebuf(map_str, noremap, 0, TRUE, cmd_silent || save_m_silent); #ifdef FEAT_EVAL if (save_m_expr) vim_free(map_str); #endif } #ifdef FEAT_EVAL vim_free(save_m_keys); vim_free(save_m_str); #endif *keylenp = keylen; if (i == FAIL) return map_result_fail; return map_result_retry; } *keylenp = keylen; return map_result_nomatch; } /* * unget one character (can only be done once!) */ void vungetc(int c) { old_char = c; old_mod_mask = mod_mask; #ifdef FEAT_MOUSE old_mouse_row = mouse_row; old_mouse_col = mouse_col; #endif } /* * Get a byte: * 1. from the stuffbuffer * This is used for abbreviated commands like "D" -> "d$". * Also used to redo a command for ".". * 2. from the typeahead buffer * Stores text obtained previously but not used yet. * Also stores the result of mappings. * Also used for the ":normal" command. * 3. from the user * This may do a blocking wait if "advance" is TRUE. * * if "advance" is TRUE (vgetc()): * Really get the character. * KeyTyped is set to TRUE in the case the user typed the key. * KeyStuffed is TRUE if the character comes from the stuff buffer. * if "advance" is FALSE (vpeekc()): * Just look whether there is a character available. * Return NUL if not. * * When "no_mapping" is zero, checks for mappings in the current mode. * Only returns one byte (of a multi-byte character). * K_SPECIAL and CSI may be escaped, need to get two more bytes then. */ static int vgetorpeek(int advance) { int c, c1; int timedout = FALSE; /* waited for more than 1 second for mapping to complete */ int mapdepth = 0; /* check for recursive mapping */ int mode_deleted = FALSE; /* set when mode has been deleted */ #ifdef FEAT_CMDL_INFO int new_wcol, new_wrow; #endif #ifdef FEAT_GUI int shape_changed = FALSE; /* adjusted cursor shape */ #endif int n; int old_wcol, old_wrow; int wait_tb_len; /* * This function doesn't work very well when called recursively. This may * happen though, because of: * 1. The call to add_to_showcmd(). char_avail() is then used to check if * there is a character available, which calls this function. In that * case we must return NUL, to indicate no character is available. * 2. A GUI callback function writes to the screen, causing a * wait_return(). * Using ":normal" can also do this, but it saves the typeahead buffer, * thus it should be OK. But don't get a key from the user then. */ if (vgetc_busy > 0 && ex_normal_busy == 0) return NUL; ++vgetc_busy; if (advance) KeyStuffed = FALSE; init_typebuf(); start_stuff(); if (advance && typebuf.tb_maplen == 0) reg_executing = 0; do { /* * get a character: 1. from the stuffbuffer */ if (typeahead_char != 0) { c = typeahead_char; if (advance) typeahead_char = 0; } else c = read_readbuffers(advance); if (c != NUL && !got_int) { if (advance) { /* KeyTyped = FALSE; When the command that stuffed something * was typed, behave like the stuffed command was typed. * needed for CTRL-W CTRL-] to open a fold, for example. */ KeyStuffed = TRUE; } if (typebuf.tb_no_abbr_cnt == 0) typebuf.tb_no_abbr_cnt = 1; /* no abbreviations now */ } else { /* * Loop until we either find a matching mapped key, or we * are sure that it is not a mapped key. * If a mapped key sequence is found we go back to the start to * try re-mapping. */ for (;;) { long wait_time; int keylen = 0; #ifdef FEAT_CMDL_INFO int showcmd_idx; #endif /* * ui_breakcheck() is slow, don't use it too often when * inside a mapping. But call it each time for typed * characters. */ if (typebuf.tb_maplen) line_breakcheck(); else ui_breakcheck(); /* check for CTRL-C */ if (got_int) { /* flush all input */ c = inchar(typebuf.tb_buf, typebuf.tb_buflen - 1, 0L); /* * If inchar() returns TRUE (script file was active) or we * are inside a mapping, get out of Insert mode. * Otherwise we behave like having gotten a CTRL-C. * As a result typing CTRL-C in insert mode will * really insert a CTRL-C. */ if ((c || typebuf.tb_maplen) && (State & (INSERT + CMDLINE))) c = ESC; else c = Ctrl_C; flush_buffers(FLUSH_INPUT); // flush all typeahead if (advance) { /* Also record this character, it might be needed to * get out of Insert mode. */ *typebuf.tb_buf = c; gotchars(typebuf.tb_buf, 1); } cmd_silent = FALSE; break; } else if (typebuf.tb_len > 0) { /* * Check for a mapping in "typebuf". */ map_result_T result = handle_mapping( &keylen, &timedout, &mapdepth); if (result == map_result_retry) // try mapping again continue; if (result == map_result_fail) { // failed, use the outer loop c = -1; break; } if (result == map_result_get) { /* * get a character: 2. from the typeahead buffer */ c = typebuf.tb_buf[typebuf.tb_off] & 255; if (advance) /* remove chars from tb_buf */ { cmd_silent = (typebuf.tb_silent > 0); if (typebuf.tb_maplen > 0) KeyTyped = FALSE; else { KeyTyped = TRUE; /* write char to script file(s) */ gotchars(typebuf.tb_buf + typebuf.tb_off, 1); } KeyNoremap = typebuf.tb_noremap[ typebuf.tb_off]; del_typebuf(1, 0); } break; } // not enough characters, get more } /* * get a character: 3. from the user - handle <Esc> in Insert mode */ /* * Special case: if we get an <ESC> in insert mode and there * are no more characters at once, we pretend to go out of * insert mode. This prevents the one second delay after * typing an <ESC>. If we get something after all, we may * have to redisplay the mode. That the cursor is in the wrong * place does not matter. */ c = 0; #ifdef FEAT_CMDL_INFO new_wcol = curwin->w_wcol; new_wrow = curwin->w_wrow; #endif if ( advance && typebuf.tb_len == 1 && typebuf.tb_buf[typebuf.tb_off] == ESC && !no_mapping && ex_normal_busy == 0 && typebuf.tb_maplen == 0 && (State & INSERT) && (p_timeout || (keylen == KEYLEN_PART_KEY && p_ttimeout)) && (c = inchar(typebuf.tb_buf + typebuf.tb_off + typebuf.tb_len, 3, 25L)) == 0) { colnr_T col = 0, vcol; char_u *ptr; if (mode_displayed) { unshowmode(TRUE); mode_deleted = TRUE; } #ifdef FEAT_GUI /* may show a different cursor shape */ if (gui.in_use && State != NORMAL && !cmd_silent) { int save_State; save_State = State; State = NORMAL; gui_update_cursor(TRUE, FALSE); State = save_State; shape_changed = TRUE; } #endif validate_cursor(); old_wcol = curwin->w_wcol; old_wrow = curwin->w_wrow; /* move cursor left, if possible */ if (curwin->w_cursor.col != 0) { if (curwin->w_wcol > 0) { if (did_ai) { /* * We are expecting to truncate the trailing * white-space, so find the last non-white * character -- webb */ col = vcol = curwin->w_wcol = 0; ptr = ml_get_curline(); while (col < curwin->w_cursor.col) { if (!VIM_ISWHITE(ptr[col])) curwin->w_wcol = vcol; vcol += lbr_chartabsize(ptr, ptr + col, (colnr_T)vcol); if (has_mbyte) col += (*mb_ptr2len)(ptr + col); else ++col; } curwin->w_wrow = curwin->w_cline_row + curwin->w_wcol / curwin->w_width; curwin->w_wcol %= curwin->w_width; curwin->w_wcol += curwin_col_off(); col = 0; /* no correction needed */ } else { --curwin->w_wcol; col = curwin->w_cursor.col - 1; } } else if (curwin->w_p_wrap && curwin->w_wrow) { --curwin->w_wrow; curwin->w_wcol = curwin->w_width - 1; col = curwin->w_cursor.col - 1; } if (has_mbyte && col > 0 && curwin->w_wcol > 0) { /* Correct when the cursor is on the right halve * of a double-wide character. */ ptr = ml_get_curline(); col -= (*mb_head_off)(ptr, ptr + col); if ((*mb_ptr2cells)(ptr + col) > 1) --curwin->w_wcol; } } setcursor(); out_flush(); #ifdef FEAT_CMDL_INFO new_wcol = curwin->w_wcol; new_wrow = curwin->w_wrow; #endif curwin->w_wcol = old_wcol; curwin->w_wrow = old_wrow; } if (c < 0) continue; /* end of input script reached */ /* Allow mapping for just typed characters. When we get here c * is the number of extra bytes and typebuf.tb_len is 1. */ for (n = 1; n <= c; ++n) typebuf.tb_noremap[typebuf.tb_off + n] = RM_YES; typebuf.tb_len += c; /* buffer full, don't map */ if (typebuf.tb_len >= typebuf.tb_maplen + MAXMAPLEN) { timedout = TRUE; continue; } if (ex_normal_busy > 0) { #ifdef FEAT_CMDWIN static int tc = 0; #endif /* No typeahead left and inside ":normal". Must return * something to avoid getting stuck. When an incomplete * mapping is present, behave like it timed out. */ if (typebuf.tb_len > 0) { timedout = TRUE; continue; } /* When 'insertmode' is set, ESC just beeps in Insert * mode. Use CTRL-L to make edit() return. * For the command line only CTRL-C always breaks it. * For the cmdline window: Alternate between ESC and * CTRL-C: ESC for most situations and CTRL-C to close the * cmdline window. */ if (p_im && (State & INSERT)) c = Ctrl_L; #ifdef FEAT_TERMINAL else if (terminal_is_active()) c = K_CANCEL; #endif else if ((State & CMDLINE) #ifdef FEAT_CMDWIN || (cmdwin_type > 0 && tc == ESC) #endif ) c = Ctrl_C; else c = ESC; #ifdef FEAT_CMDWIN tc = c; #endif break; } /* * get a character: 3. from the user - update display */ /* In insert mode a screen update is skipped when characters * are still available. But when those available characters * are part of a mapping, and we are going to do a blocking * wait here. Need to update the screen to display the * changed text so far. Also for when 'lazyredraw' is set and * redrawing was postponed because there was something in the * input buffer (e.g., termresponse). */ if (((State & INSERT) != 0 || p_lz) && (State & CMDLINE) == 0 && advance && must_redraw != 0 && !need_wait_return) { update_screen(0); setcursor(); /* put cursor back where it belongs */ } /* * If we have a partial match (and are going to wait for more * input from the user), show the partially matched characters * to the user with showcmd. */ #ifdef FEAT_CMDL_INFO showcmd_idx = 0; #endif c1 = 0; if (typebuf.tb_len > 0 && advance && !exmode_active) { if (((State & (NORMAL | INSERT)) || State == LANGMAP) && State != HITRETURN) { /* this looks nice when typing a dead character map */ if (State & INSERT && ptr2cells(typebuf.tb_buf + typebuf.tb_off + typebuf.tb_len - 1) == 1) { edit_putchar(typebuf.tb_buf[typebuf.tb_off + typebuf.tb_len - 1], FALSE); setcursor(); /* put cursor back where it belongs */ c1 = 1; } #ifdef FEAT_CMDL_INFO /* need to use the col and row from above here */ old_wcol = curwin->w_wcol; old_wrow = curwin->w_wrow; curwin->w_wcol = new_wcol; curwin->w_wrow = new_wrow; push_showcmd(); if (typebuf.tb_len > SHOWCMD_COLS) showcmd_idx = typebuf.tb_len - SHOWCMD_COLS; while (showcmd_idx < typebuf.tb_len) (void)add_to_showcmd( typebuf.tb_buf[typebuf.tb_off + showcmd_idx++]); curwin->w_wcol = old_wcol; curwin->w_wrow = old_wrow; #endif } /* this looks nice when typing a dead character map */ if ((State & CMDLINE) #if defined(FEAT_CRYPT) || defined(FEAT_EVAL) && cmdline_star == 0 #endif && ptr2cells(typebuf.tb_buf + typebuf.tb_off + typebuf.tb_len - 1) == 1) { putcmdline(typebuf.tb_buf[typebuf.tb_off + typebuf.tb_len - 1], FALSE); c1 = 1; } } /* * get a character: 3. from the user - get it */ if (typebuf.tb_len == 0) // timedout may have been set while waiting for a mapping // that has a <Nop> RHS. timedout = FALSE; if (advance) { if (typebuf.tb_len == 0 || !(p_timeout || (p_ttimeout && keylen == KEYLEN_PART_KEY))) // blocking wait wait_time = -1L; else if (keylen == KEYLEN_PART_KEY && p_ttm >= 0) wait_time = p_ttm; else wait_time = p_tm; } else wait_time = 0; wait_tb_len = typebuf.tb_len; c = inchar(typebuf.tb_buf + typebuf.tb_off + typebuf.tb_len, typebuf.tb_buflen - typebuf.tb_off - typebuf.tb_len - 1, wait_time); #ifdef FEAT_CMDL_INFO if (showcmd_idx != 0) pop_showcmd(); #endif if (c1 == 1) { if (State & INSERT) edit_unputchar(); if (State & CMDLINE) unputcmdline(); else setcursor(); /* put cursor back where it belongs */ } if (c < 0) continue; /* end of input script reached */ if (c == NUL) /* no character available */ { if (!advance) break; if (wait_tb_len > 0) /* timed out */ { timedout = TRUE; continue; } } else { /* allow mapping for just typed characters */ while (typebuf.tb_buf[typebuf.tb_off + typebuf.tb_len] != NUL) typebuf.tb_noremap[typebuf.tb_off + typebuf.tb_len++] = RM_YES; #ifdef HAVE_INPUT_METHOD /* Get IM status right after getting keys, not after the * timeout for a mapping (focus may be lost by then). */ vgetc_im_active = im_get_status(); #endif } } /* for (;;) */ } /* if (!character from stuffbuf) */ /* if advance is FALSE don't loop on NULs */ } while ((c < 0 && c != K_CANCEL) || (advance && c == NUL)); /* * The "INSERT" message is taken care of here: * if we return an ESC to exit insert mode, the message is deleted * if we don't return an ESC but deleted the message before, redisplay it */ if (advance && p_smd && msg_silent == 0 && (State & INSERT)) { if (c == ESC && !mode_deleted && !no_mapping && mode_displayed) { if (typebuf.tb_len && !KeyTyped) redraw_cmdline = TRUE; /* delete mode later */ else unshowmode(FALSE); } else if (c != ESC && mode_deleted) { if (typebuf.tb_len && !KeyTyped) redraw_cmdline = TRUE; /* show mode later */ else showmode(); } } #ifdef FEAT_GUI /* may unshow different cursor shape */ if (gui.in_use && shape_changed) gui_update_cursor(TRUE, FALSE); #endif if (timedout && c == ESC) { char_u nop_buf[3]; // When recording there will be no timeout. Add a <Nop> after the ESC // to avoid that it forms a key code with following characters. nop_buf[0] = K_SPECIAL; nop_buf[1] = KS_EXTRA; nop_buf[2] = KE_NOP; gotchars(nop_buf, 3); } --vgetc_busy; return c; } /* * inchar() - get one character from * 1. a scriptfile * 2. the keyboard * * As much characters as we can get (upto 'maxlen') are put in "buf" and * NUL terminated (buffer length must be 'maxlen' + 1). * Minimum for "maxlen" is 3!!!! * * "tb_change_cnt" is the value of typebuf.tb_change_cnt if "buf" points into * it. When typebuf.tb_change_cnt changes (e.g., when a message is received * from a remote client) "buf" can no longer be used. "tb_change_cnt" is 0 * otherwise. * * If we got an interrupt all input is read until none is available. * * If wait_time == 0 there is no waiting for the char. * If wait_time == n we wait for n msec for a character to arrive. * If wait_time == -1 we wait forever for a character to arrive. * * Return the number of obtained characters. * Return -1 when end of input script reached. */ static int inchar( char_u *buf, int maxlen, long wait_time) /* milli seconds */ { int len = 0; /* init for GCC */ int retesc = FALSE; /* return ESC with gotint */ int script_char; int tb_change_cnt = typebuf.tb_change_cnt; if (wait_time == -1L || wait_time > 100L) /* flush output before waiting */ { cursor_on(); out_flush_cursor(FALSE, FALSE); #if defined(FEAT_GUI) && defined(FEAT_MOUSESHAPE) if (gui.in_use && postponed_mouseshape) update_mouseshape(-1); #endif } /* * Don't reset these when at the hit-return prompt, otherwise a endless * recursive loop may result (write error in swapfile, hit-return, timeout * on char wait, flush swapfile, write error....). */ if (State != HITRETURN) { did_outofmem_msg = FALSE; /* display out of memory message (again) */ did_swapwrite_msg = FALSE; /* display swap file write error again */ } undo_off = FALSE; /* restart undo now */ /* * Get a character from a script file if there is one. * If interrupted: Stop reading script files, close them all. */ script_char = -1; while (scriptin[curscript] != NULL && script_char < 0 #ifdef FEAT_EVAL && !ignore_script #endif ) { #ifdef MESSAGE_QUEUE parse_queued_messages(); #endif if (got_int || (script_char = getc(scriptin[curscript])) < 0) { /* Reached EOF. * Careful: closescript() frees typebuf.tb_buf[] and buf[] may * point inside typebuf.tb_buf[]. Don't use buf[] after this! */ closescript(); /* * When reading script file is interrupted, return an ESC to get * back to normal mode. * Otherwise return -1, because typebuf.tb_buf[] has changed. */ if (got_int) retesc = TRUE; else return -1; } else { buf[0] = script_char; len = 1; } } if (script_char < 0) /* did not get a character from script */ { /* * If we got an interrupt, skip all previously typed characters and * return TRUE if quit reading script file. * Stop reading typeahead when a single CTRL-C was read, * fill_input_buf() returns this when not able to read from stdin. * Don't use buf[] here, closescript() may have freed typebuf.tb_buf[] * and buf may be pointing inside typebuf.tb_buf[]. */ if (got_int) { #define DUM_LEN MAXMAPLEN * 3 + 3 char_u dum[DUM_LEN + 1]; for (;;) { len = ui_inchar(dum, DUM_LEN, 0L, 0); if (len == 0 || (len == 1 && dum[0] == 3)) break; } return retesc; } /* * Always flush the output characters when getting input characters * from the user and not just peeking. */ if (wait_time == -1L || wait_time > 10L) out_flush(); /* * Fill up to a third of the buffer, because each character may be * tripled below. */ len = ui_inchar(buf, maxlen / 3, wait_time, tb_change_cnt); } /* If the typebuf was changed further down, it is like nothing was added by * this call. */ if (typebuf_changed(tb_change_cnt)) return 0; /* Note the change in the typeahead buffer, this matters for when * vgetorpeek() is called recursively, e.g. using getchar(1) in a timer * function. */ if (len > 0 && ++typebuf.tb_change_cnt == 0) typebuf.tb_change_cnt = 1; return fix_input_buffer(buf, len); } /* * Fix typed characters for use by vgetc() and check_termcode(). * "buf[]" must have room to triple the number of bytes! * Returns the new length. */ int fix_input_buffer(char_u *buf, int len) { int i; char_u *p = buf; /* * Two characters are special: NUL and K_SPECIAL. * When compiled With the GUI CSI is also special. * Replace NUL by K_SPECIAL KS_ZERO KE_FILLER * Replace K_SPECIAL by K_SPECIAL KS_SPECIAL KE_FILLER * Replace CSI by K_SPECIAL KS_EXTRA KE_CSI */ for (i = len; --i >= 0; ++p) { #ifdef FEAT_GUI /* When the GUI is used any character can come after a CSI, don't * escape it. */ if (gui.in_use && p[0] == CSI && i >= 2) { p += 2; i -= 2; } # ifndef MSWIN /* When the GUI is not used CSI needs to be escaped. */ else if (!gui.in_use && p[0] == CSI) { mch_memmove(p + 3, p + 1, (size_t)i); *p++ = K_SPECIAL; *p++ = KS_EXTRA; *p = (int)KE_CSI; len += 2; } # endif else #endif if (p[0] == NUL || (p[0] == K_SPECIAL // timeout may generate K_CURSORHOLD && (i < 2 || p[1] != KS_EXTRA || p[2] != (int)KE_CURSORHOLD) #if defined(MSWIN) && (!defined(FEAT_GUI) || defined(VIMDLL)) // Win32 console passes modifiers && ( # ifdef VIMDLL gui.in_use || # endif (i < 2 || p[1] != KS_MODIFIER)) #endif )) { mch_memmove(p + 3, p + 1, (size_t)i); p[2] = K_THIRD(p[0]); p[1] = K_SECOND(p[0]); p[0] = K_SPECIAL; p += 2; len += 2; } } *p = NUL; // add trailing NUL return len; } #if defined(USE_INPUT_BUF) || defined(PROTO) /* * Return TRUE when bytes are in the input buffer or in the typeahead buffer. * Normally the input buffer would be sufficient, but the server_to_input_buf() * or feedkeys() may insert characters in the typeahead buffer while we are * waiting for input to arrive. */ int input_available(void) { return (!vim_is_input_buf_empty() # if defined(FEAT_CLIENTSERVER) || defined(FEAT_EVAL) || typebuf_was_filled # endif ); } #endif