Mercurial > vim
annotate src/os_mac_conv.c @ 11829:f7091bdf552b
Added tag v8.0.0794 for changeset 5a07a3ff56c196fc004d710df087f005d7a86b0e
author | Christian Brabandt <cb@256bit.org> |
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date | Fri, 28 Jul 2017 17:00:06 +0200 |
parents | 4aead6a9b7a9 |
children | f67ac05fa3cd |
rev | line source |
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commit https://github.com/vim/vim/commit/edf3f97ae2af024708ebb4ac614227327033ca47
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1 /* vi:set ts=8 sts=4 sw=4 noet: |
18 | 2 * |
3 * VIM - Vi IMproved by Bram Moolenaar | |
4 * | |
5 * Do ":help uganda" in Vim to read copying and usage conditions. | |
6 * Do ":help credits" in Vim to see a list of people who contributed. | |
7 * See README.txt for an overview of the Vim source code. | |
8 */ | |
9 /* | |
10 * os_mac_conv.c: Code specifically for Mac string conversions. | |
11 * | |
12 * This code has been put in a separate file to avoid the conflicts that are | |
13 * caused by including both the X11 and Carbon header files. | |
14 */ | |
15 | |
16 #define NO_X11_INCLUDES | |
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17 typedef int BalloonEval; /* used in header files */ |
2891 | 18 |
18 | 19 #include "vim.h" |
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20 |
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21 #if !defined(FEAT_GUI_MAC) && !defined(PROTO) |
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22 # include <CoreServices/CoreServices.h> |
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23 #endif |
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24 |
18 | 25 |
766 | 26 #if defined(MACOS_CONVERT) || defined(PROTO) |
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27 |
766 | 28 # ifdef PROTO |
29 /* A few dummy types to be able to generate function prototypes. */ | |
30 typedef int UniChar; | |
31 typedef int *TECObjectRef; | |
32 typedef int CFStringRef; | |
33 # endif | |
34 | |
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35 static char_u *mac_utf16_to_utf8(UniChar *from, size_t fromLen, size_t *actualLen); |
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36 static UniChar *mac_utf8_to_utf16(char_u *from, size_t fromLen, size_t *actualLen); |
168 | 37 |
38 /* Converter for composing decomposed HFS+ file paths */ | |
39 static TECObjectRef gPathConverter; | |
40 /* Converter used by mac_utf16_to_utf8 */ | |
41 static TECObjectRef gUTF16ToUTF8Converter; | |
42 | |
18 | 43 /* |
44 * A Mac version of string_convert_ext() for special cases. | |
45 */ | |
46 char_u * | |
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47 mac_string_convert( |
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48 char_u *ptr, |
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49 int len, |
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50 int *lenp, |
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51 int fail_on_error, |
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52 int from_enc, |
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53 int to_enc, |
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54 int *unconvlenp) |
18 | 55 { |
56 char_u *retval, *d; | |
57 CFStringRef cfstr; | |
58 int buflen, in, out, l, i; | |
59 CFStringEncoding from; | |
60 CFStringEncoding to; | |
61 | |
62 switch (from_enc) | |
63 { | |
64 case 'l': from = kCFStringEncodingISOLatin1; break; | |
65 case 'm': from = kCFStringEncodingMacRoman; break; | |
66 case 'u': from = kCFStringEncodingUTF8; break; | |
67 default: return NULL; | |
68 } | |
69 switch (to_enc) | |
70 { | |
71 case 'l': to = kCFStringEncodingISOLatin1; break; | |
72 case 'm': to = kCFStringEncodingMacRoman; break; | |
73 case 'u': to = kCFStringEncodingUTF8; break; | |
74 default: return NULL; | |
75 } | |
76 | |
77 if (unconvlenp != NULL) | |
78 *unconvlenp = 0; | |
79 cfstr = CFStringCreateWithBytes(NULL, ptr, len, from, 0); | |
80 | |
3143 | 81 if (cfstr == NULL) |
168 | 82 fprintf(stderr, "Encoding failed\n"); |
18 | 83 /* When conversion failed, try excluding bytes from the end, helps when |
84 * there is an incomplete byte sequence. Only do up to 6 bytes to avoid | |
1212 | 85 * looping a long time when there really is something unconvertible. */ |
18 | 86 while (cfstr == NULL && unconvlenp != NULL && len > 1 && *unconvlenp < 6) |
87 { | |
88 --len; | |
89 ++*unconvlenp; | |
90 cfstr = CFStringCreateWithBytes(NULL, ptr, len, from, 0); | |
91 } | |
92 if (cfstr == NULL) | |
93 return NULL; | |
168 | 94 |
18 | 95 if (to == kCFStringEncodingUTF8) |
96 buflen = len * 6 + 1; | |
97 else | |
98 buflen = len + 1; | |
99 retval = alloc(buflen); | |
100 if (retval == NULL) | |
101 { | |
102 CFRelease(cfstr); | |
103 return NULL; | |
104 } | |
168 | 105 |
106 #if 0 | |
107 CFRange convertRange = CFRangeMake(0, CFStringGetLength(cfstr)); | |
108 /* Determine output buffer size */ | |
109 CFStringGetBytes(cfstr, convertRange, to, NULL, FALSE, NULL, 0, (CFIndex *)&buflen); | |
110 retval = (buflen > 0) ? alloc(buflen) : NULL; | |
111 if (retval == NULL) { | |
112 CFRelease(cfstr); | |
113 return NULL; | |
114 } | |
115 | |
116 if (lenp) | |
117 *lenp = buflen / sizeof(char_u); | |
118 | |
119 if (!CFStringGetBytes(cfstr, convertRange, to, NULL, FALSE, retval, buflen, NULL)) | |
120 #endif | |
501 | 121 if (!CFStringGetCString(cfstr, (char *)retval, buflen, to)) |
18 | 122 { |
123 CFRelease(cfstr); | |
124 if (fail_on_error) | |
125 { | |
126 vim_free(retval); | |
127 return NULL; | |
128 } | |
129 | |
168 | 130 fprintf(stderr, "Trying char-by-char conversion...\n"); |
18 | 131 /* conversion failed for the whole string, but maybe it will work |
132 * for each character */ | |
133 for (d = retval, in = 0, out = 0; in < len && out < buflen - 1;) | |
134 { | |
135 if (from == kCFStringEncodingUTF8) | |
474 | 136 l = utf_ptr2len(ptr + in); |
18 | 137 else |
138 l = 1; | |
139 cfstr = CFStringCreateWithBytes(NULL, ptr + in, l, from, 0); | |
140 if (cfstr == NULL) | |
141 { | |
142 *d++ = '?'; | |
143 out++; | |
144 } | |
145 else | |
146 { | |
501 | 147 if (!CFStringGetCString(cfstr, (char *)d, buflen - out, to)) |
18 | 148 { |
149 *d++ = '?'; | |
150 out++; | |
151 } | |
152 else | |
153 { | |
501 | 154 i = STRLEN(d); |
18 | 155 d += i; |
156 out += i; | |
157 } | |
158 CFRelease(cfstr); | |
159 } | |
160 in += l; | |
161 } | |
162 *d = NUL; | |
163 if (lenp != NULL) | |
164 *lenp = out; | |
165 return retval; | |
166 } | |
167 CFRelease(cfstr); | |
168 if (lenp != NULL) | |
501 | 169 *lenp = STRLEN(retval); |
168 | 170 |
18 | 171 return retval; |
172 } | |
173 | |
174 /* | |
175 * Conversion from Apple MacRoman char encoding to UTF-8 or latin1, using | |
176 * standard Carbon framework. | |
177 * Input: "ptr[*sizep]". | |
178 * "real_size" is the size of the buffer that "ptr" points to. | |
179 * output is in-place, "sizep" is adjusted. | |
180 * Returns OK or FAIL. | |
181 */ | |
182 int | |
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183 macroman2enc( |
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184 char_u *ptr, |
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185 long *sizep, |
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186 long real_size) |
18 | 187 { |
188 CFStringRef cfstr; | |
189 CFRange r; | |
190 CFIndex len = *sizep; | |
191 | |
192 /* MacRoman is an 8-bit encoding, no need to move bytes to | |
193 * conv_rest[]. */ | |
194 cfstr = CFStringCreateWithBytes(NULL, ptr, len, | |
195 kCFStringEncodingMacRoman, 0); | |
196 /* | |
197 * If there is a conversion error, try using another | |
198 * conversion. | |
199 */ | |
200 if (cfstr == NULL) | |
201 return FAIL; | |
202 | |
203 r.location = 0; | |
204 r.length = CFStringGetLength(cfstr); | |
205 if (r.length != CFStringGetBytes(cfstr, r, | |
206 (enc_utf8) ? kCFStringEncodingUTF8 : kCFStringEncodingISOLatin1, | |
207 0, /* no lossy conversion */ | |
208 0, /* not external representation */ | |
209 ptr + *sizep, real_size - *sizep, &len)) | |
210 { | |
211 CFRelease(cfstr); | |
212 return FAIL; | |
213 } | |
214 CFRelease(cfstr); | |
215 mch_memmove(ptr, ptr + *sizep, len); | |
216 *sizep = len; | |
217 | |
218 return OK; | |
219 } | |
220 | |
221 /* | |
222 * Conversion from UTF-8 or latin1 to MacRoman. | |
223 * Input: "from[fromlen]" | |
224 * Output: "to[maxtolen]" length in "*tolenp" | |
225 * Unconverted rest in rest[*restlenp]. | |
226 * Returns OK or FAIL. | |
227 */ | |
228 int | |
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229 enc2macroman( |
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230 char_u *from, |
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231 size_t fromlen, |
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232 char_u *to, |
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233 int *tolenp, |
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234 int maxtolen, |
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235 char_u *rest, |
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236 int *restlenp) |
18 | 237 { |
238 CFStringRef cfstr; | |
239 CFRange r; | |
240 CFIndex l; | |
241 | |
242 *restlenp = 0; | |
243 cfstr = CFStringCreateWithBytes(NULL, from, fromlen, | |
244 (enc_utf8) ? kCFStringEncodingUTF8 : kCFStringEncodingISOLatin1, | |
245 0); | |
246 while (cfstr == NULL && *restlenp < 3 && fromlen > 1) | |
247 { | |
248 rest[*restlenp++] = from[--fromlen]; | |
249 cfstr = CFStringCreateWithBytes(NULL, from, fromlen, | |
250 (enc_utf8) ? kCFStringEncodingUTF8 : kCFStringEncodingISOLatin1, | |
251 0); | |
252 } | |
253 if (cfstr == NULL) | |
254 return FAIL; | |
255 | |
256 r.location = 0; | |
257 r.length = CFStringGetLength(cfstr); | |
258 if (r.length != CFStringGetBytes(cfstr, r, | |
259 kCFStringEncodingMacRoman, | |
260 0, /* no lossy conversion */ | |
261 0, /* not external representation (since vim | |
262 * handles this internally */ | |
263 to, maxtolen, &l)) | |
264 { | |
265 CFRelease(cfstr); | |
266 return FAIL; | |
267 } | |
268 CFRelease(cfstr); | |
269 *tolenp = l; | |
270 return OK; | |
271 } | |
20 | 272 |
168 | 273 /* |
274 * Initializes text converters | |
275 */ | |
276 void | |
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277 mac_conv_init(void) |
168 | 278 { |
279 TextEncoding utf8_encoding; | |
280 TextEncoding utf8_hfsplus_encoding; | |
281 TextEncoding utf8_canon_encoding; | |
282 TextEncoding utf16_encoding; | |
283 | |
284 utf8_encoding = CreateTextEncoding(kTextEncodingUnicodeDefault, | |
285 kTextEncodingDefaultVariant, kUnicodeUTF8Format); | |
286 utf8_hfsplus_encoding = CreateTextEncoding(kTextEncodingUnicodeDefault, | |
287 kUnicodeHFSPlusCompVariant, kUnicodeUTF8Format); | |
288 utf8_canon_encoding = CreateTextEncoding(kTextEncodingUnicodeDefault, | |
289 kUnicodeCanonicalCompVariant, kUnicodeUTF8Format); | |
290 utf16_encoding = CreateTextEncoding(kTextEncodingUnicodeDefault, | |
291 kTextEncodingDefaultVariant, kUnicode16BitFormat); | |
292 | |
293 if (TECCreateConverter(&gPathConverter, utf8_encoding, | |
294 utf8_hfsplus_encoding) != noErr) | |
295 gPathConverter = NULL; | |
296 | |
297 if (TECCreateConverter(&gUTF16ToUTF8Converter, utf16_encoding, | |
298 utf8_canon_encoding) != noErr) | |
179 | 299 { |
300 /* On pre-10.3, Unicode normalization is not available so | |
301 * fall back to non-normalizing converter */ | |
302 if (TECCreateConverter(&gUTF16ToUTF8Converter, utf16_encoding, | |
303 utf8_encoding) != noErr) | |
304 gUTF16ToUTF8Converter = NULL; | |
305 } | |
168 | 306 } |
307 | |
308 /* | |
309 * Destroys text converters | |
310 */ | |
311 void | |
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312 mac_conv_cleanup(void) |
168 | 313 { |
314 if (gUTF16ToUTF8Converter) | |
315 { | |
316 TECDisposeConverter(gUTF16ToUTF8Converter); | |
317 gUTF16ToUTF8Converter = NULL; | |
318 } | |
319 | |
320 if (gPathConverter) | |
321 { | |
322 TECDisposeConverter(gPathConverter); | |
323 gPathConverter = NULL; | |
324 } | |
325 } | |
326 | |
327 /* | |
328 * Conversion from UTF-16 UniChars to 'encoding' | |
1621 | 329 * The function signature uses the real type of UniChar (as typedef'ed in |
330 * CFBase.h) to avoid clashes with X11 header files in the .pro file | |
168 | 331 */ |
332 char_u * | |
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333 mac_utf16_to_enc( |
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334 unsigned short *from, |
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335 size_t fromLen, |
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336 size_t *actualLen) |
168 | 337 { |
338 /* Following code borrows somewhat from os_mswin.c */ | |
339 vimconv_T conv; | |
340 size_t utf8_len; | |
341 char_u *utf8_str; | |
342 char_u *result = NULL; | |
343 | |
344 /* Convert to utf-8 first, works better with iconv */ | |
345 utf8_len = 0; | |
346 utf8_str = mac_utf16_to_utf8(from, fromLen, &utf8_len); | |
347 | |
348 if (utf8_str) | |
349 { | |
350 /* We might be called before we have p_enc set up. */ | |
351 conv.vc_type = CONV_NONE; | |
352 | |
353 /* If encoding (p_enc) is any unicode, it is actually in utf-8 (vim | |
354 * internal unicode is always utf-8) so don't convert in such cases */ | |
355 | |
356 if ((enc_canon_props(p_enc) & ENC_UNICODE) == 0) | |
357 convert_setup(&conv, (char_u *)"utf-8", | |
358 p_enc? p_enc: (char_u *)"macroman"); | |
359 if (conv.vc_type == CONV_NONE) | |
360 { | |
361 /* p_enc is utf-8, so we're done. */ | |
362 result = utf8_str; | |
363 } | |
364 else | |
365 { | |
366 result = string_convert(&conv, utf8_str, (int *)&utf8_len); | |
367 vim_free(utf8_str); | |
368 } | |
369 | |
370 convert_setup(&conv, NULL, NULL); | |
371 | |
372 if (actualLen) | |
373 *actualLen = utf8_len; | |
374 } | |
375 else if (actualLen) | |
376 *actualLen = 0; | |
377 | |
378 return result; | |
379 } | |
380 | |
381 /* | |
382 * Conversion from 'encoding' to UTF-16 UniChars | |
1621 | 383 * The function return uses the real type of UniChar (as typedef'ed in |
384 * CFBase.h) to avoid clashes with X11 header files in the .pro file | |
168 | 385 */ |
1621 | 386 unsigned short * |
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387 mac_enc_to_utf16( |
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388 char_u *from, |
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389 size_t fromLen, |
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390 size_t *actualLen) |
168 | 391 { |
392 /* Following code borrows somewhat from os_mswin.c */ | |
393 vimconv_T conv; | |
394 size_t utf8_len; | |
395 char_u *utf8_str; | |
396 UniChar *result = NULL; | |
397 Boolean should_free_utf8 = FALSE; | |
398 | |
399 do | |
400 { | |
401 /* Use MacRoman by default, we might be called before we have p_enc | |
402 * set up. Convert to utf-8 first, works better with iconv(). Does | |
403 * nothing if 'encoding' is "utf-8". */ | |
404 conv.vc_type = CONV_NONE; | |
405 if ((enc_canon_props(p_enc) & ENC_UNICODE) == 0 && | |
406 convert_setup(&conv, p_enc ? p_enc : (char_u *)"macroman", | |
407 (char_u *)"utf-8") == FAIL) | |
408 break; | |
409 | |
410 if (conv.vc_type != CONV_NONE) | |
411 { | |
412 utf8_len = fromLen; | |
413 utf8_str = string_convert(&conv, from, (int *)&utf8_len); | |
414 should_free_utf8 = TRUE; | |
415 } | |
416 else | |
417 { | |
418 utf8_str = from; | |
419 utf8_len = fromLen; | |
420 } | |
421 | |
422 if (utf8_str == NULL) | |
423 break; | |
424 | |
425 convert_setup(&conv, NULL, NULL); | |
426 | |
427 result = mac_utf8_to_utf16(utf8_str, utf8_len, actualLen); | |
428 | |
429 if (should_free_utf8) | |
430 vim_free(utf8_str); | |
431 return result; | |
432 } | |
433 while (0); | |
434 | |
435 if (actualLen) | |
436 *actualLen = 0; | |
437 | |
438 return result; | |
439 } | |
440 | |
441 /* | |
442 * Converts from UTF-16 UniChars to CFString | |
1621 | 443 * The void * return type is actually a CFStringRef |
168 | 444 */ |
1621 | 445 void * |
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446 mac_enc_to_cfstring( |
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447 char_u *from, |
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448 size_t fromLen) |
168 | 449 { |
450 UniChar *utf16_str; | |
451 size_t utf16_len; | |
452 CFStringRef result = NULL; | |
453 | |
454 utf16_str = mac_enc_to_utf16(from, fromLen, &utf16_len); | |
455 if (utf16_str) | |
456 { | |
457 result = CFStringCreateWithCharacters(NULL, utf16_str, utf16_len/sizeof(UniChar)); | |
458 vim_free(utf16_str); | |
459 } | |
460 | |
1621 | 461 return (void *)result; |
168 | 462 } |
463 | |
464 /* | |
465 * Converts a decomposed HFS+ UTF-8 path to precomposed UTF-8 | |
466 */ | |
467 char_u * | |
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468 mac_precompose_path( |
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469 char_u *decompPath, |
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470 size_t decompLen, |
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471 size_t *precompLen) |
168 | 472 { |
473 char_u *result = NULL; | |
474 size_t actualLen = 0; | |
475 | |
476 if (gPathConverter) | |
477 { | |
478 result = alloc(decompLen); | |
479 if (result) | |
480 { | |
481 if (TECConvertText(gPathConverter, decompPath, | |
482 decompLen, &decompLen, result, | |
483 decompLen, &actualLen) != noErr) | |
484 { | |
485 vim_free(result); | |
486 result = NULL; | |
487 } | |
488 } | |
489 } | |
490 | |
491 if (precompLen) | |
492 *precompLen = actualLen; | |
493 | |
494 return result; | |
495 } | |
496 | |
497 /* | |
498 * Converts from UTF-16 UniChars to precomposed UTF-8 | |
499 */ | |
766 | 500 static char_u * |
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501 mac_utf16_to_utf8( |
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502 UniChar *from, |
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503 size_t fromLen, |
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504 size_t *actualLen) |
168 | 505 { |
506 ByteCount utf8_len; | |
507 ByteCount inputRead; | |
508 char_u *result; | |
509 | |
510 if (gUTF16ToUTF8Converter) | |
511 { | |
512 result = alloc(fromLen * 6 + 1); | |
513 if (result && TECConvertText(gUTF16ToUTF8Converter, (ConstTextPtr)from, | |
514 fromLen, &inputRead, result, | |
515 (fromLen*6+1)*sizeof(char_u), &utf8_len) == noErr) | |
516 { | |
517 TECFlushText(gUTF16ToUTF8Converter, result, (fromLen*6+1)*sizeof(char_u), &inputRead); | |
518 utf8_len += inputRead; | |
519 } | |
520 else | |
521 { | |
522 vim_free(result); | |
523 result = NULL; | |
524 } | |
525 } | |
526 else | |
527 { | |
528 result = NULL; | |
529 } | |
530 | |
531 if (actualLen) | |
532 *actualLen = result ? utf8_len : 0; | |
533 | |
534 return result; | |
535 } | |
536 | |
537 /* | |
538 * Converts from UTF-8 to UTF-16 UniChars | |
539 */ | |
766 | 540 static UniChar * |
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541 mac_utf8_to_utf16( |
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542 char_u *from, |
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543 size_t fromLen, |
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544 size_t *actualLen) |
168 | 545 { |
546 CFStringRef utf8_str; | |
547 CFRange convertRange; | |
548 UniChar *result = NULL; | |
549 | |
550 utf8_str = CFStringCreateWithBytes(NULL, from, fromLen, | |
551 kCFStringEncodingUTF8, FALSE); | |
552 | |
553 if (utf8_str == NULL) { | |
554 if (actualLen) | |
555 *actualLen = 0; | |
556 return NULL; | |
557 } | |
558 | |
559 convertRange = CFRangeMake(0, CFStringGetLength(utf8_str)); | |
560 result = (UniChar *)alloc(convertRange.length * sizeof(UniChar)); | |
561 | |
562 CFStringGetCharacters(utf8_str, convertRange, result); | |
563 | |
564 CFRelease(utf8_str); | |
565 | |
566 if (actualLen) | |
567 *actualLen = convertRange.length * sizeof(UniChar); | |
568 | |
569 return result; | |
570 } | |
1621 | 571 |
572 /* | |
573 * Sets LANG environment variable in Vim from Mac locale | |
574 */ | |
575 void | |
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576 mac_lang_init(void) |
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577 { |
1621 | 578 if (mch_getenv((char_u *)"LANG") == NULL) |
579 { | |
580 char buf[20]; | |
581 if (LocaleRefGetPartString(NULL, | |
582 kLocaleLanguageMask | kLocaleLanguageVariantMask | | |
583 kLocaleRegionMask | kLocaleRegionVariantMask, | |
584 sizeof buf, buf) == noErr && *buf) | |
585 { | |
586 vim_setenv((char_u *)"LANG", (char_u *)buf); | |
587 # ifdef HAVE_LOCALE_H | |
588 setlocale(LC_ALL, ""); | |
589 # endif | |
590 } | |
591 } | |
592 } | |
766 | 593 #endif /* MACOS_CONVERT */ |