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1 | ///////////////////////////////////////////////////////////////////////////// | |
2 | // Name: src/common/strconv.cpp | |
3 | // Purpose: Unicode conversion classes | |
4 | // Author: Ove Kaaven, Robert Roebling, Vadim Zeitlin, Vaclav Slavik, | |
5 | // Ryan Norton, Fredrik Roubert (UTF7) | |
6 | // Modified by: | |
7 | // Created: 29/01/98 | |
8 | // RCS-ID: $Id$ | |
9 | // Copyright: (c) 1999 Ove Kaaven, Robert Roebling, Vaclav Slavik | |
10 | // (c) 2000-2003 Vadim Zeitlin | |
11 | // (c) 2004 Ryan Norton, Fredrik Roubert | |
12 | // Licence: wxWindows licence | |
13 | ///////////////////////////////////////////////////////////////////////////// | |
14 | ||
15 | // For compilers that support precompilation, includes "wx.h". | |
16 | #include "wx/wxprec.h" | |
17 | ||
18 | #ifdef __BORLANDC__ | |
19 | #pragma hdrstop | |
20 | #endif //__BORLANDC__ | |
21 | ||
22 | #ifndef WX_PRECOMP | |
23 | #include "wx/intl.h" | |
24 | #include "wx/log.h" | |
25 | #include "wx/utils.h" | |
26 | #include "wx/hashmap.h" | |
27 | #endif | |
28 | ||
29 | #include "wx/strconv.h" | |
30 | ||
31 | #if wxUSE_WCHAR_T | |
32 | ||
33 | #ifndef __WXWINCE__ | |
34 | #include <errno.h> | |
35 | #endif | |
36 | ||
37 | #include <ctype.h> | |
38 | #include <string.h> | |
39 | #include <stdlib.h> | |
40 | ||
41 | #if defined(__WIN32__) && !defined(__WXMICROWIN__) | |
42 | #include "wx/msw/private.h" | |
43 | #include "wx/msw/missing.h" | |
44 | #define wxHAVE_WIN32_MB2WC | |
45 | #endif | |
46 | ||
47 | #ifdef __SALFORDC__ | |
48 | #include <clib.h> | |
49 | #endif | |
50 | ||
51 | #ifdef HAVE_ICONV | |
52 | #include <iconv.h> | |
53 | #include "wx/thread.h" | |
54 | #endif | |
55 | ||
56 | #include "wx/encconv.h" | |
57 | #include "wx/fontmap.h" | |
58 | ||
59 | #ifdef __DARWIN__ | |
60 | #include "wx/mac/corefoundation/private/strconv_cf.h" | |
61 | #endif //def __DARWIN__ | |
62 | ||
63 | ||
64 | #define TRACE_STRCONV _T("strconv") | |
65 | ||
66 | // WC_UTF16 is defined only if sizeof(wchar_t) == 2, otherwise it's supposed to | |
67 | // be 4 bytes | |
68 | #if SIZEOF_WCHAR_T == 2 | |
69 | #define WC_UTF16 | |
70 | #endif | |
71 | ||
72 | ||
73 | // ============================================================================ | |
74 | // implementation | |
75 | // ============================================================================ | |
76 | ||
77 | // helper function of cMB2WC(): check if n bytes at this location are all NUL | |
78 | static bool NotAllNULs(const char *p, size_t n) | |
79 | { | |
80 | while ( n && *p++ == '\0' ) | |
81 | n--; | |
82 | ||
83 | return n != 0; | |
84 | } | |
85 | ||
86 | // ---------------------------------------------------------------------------- | |
87 | // UTF-16 en/decoding to/from UCS-4 with surrogates handling | |
88 | // ---------------------------------------------------------------------------- | |
89 | ||
90 | static size_t encode_utf16(wxUint32 input, wxUint16 *output) | |
91 | { | |
92 | if (input <= 0xffff) | |
93 | { | |
94 | if (output) | |
95 | *output = (wxUint16) input; | |
96 | ||
97 | return 1; | |
98 | } | |
99 | else if (input >= 0x110000) | |
100 | { | |
101 | return wxCONV_FAILED; | |
102 | } | |
103 | else | |
104 | { | |
105 | if (output) | |
106 | { | |
107 | *output++ = (wxUint16) ((input >> 10) + 0xd7c0); | |
108 | *output = (wxUint16) ((input & 0x3ff) + 0xdc00); | |
109 | } | |
110 | ||
111 | return 2; | |
112 | } | |
113 | } | |
114 | ||
115 | static size_t decode_utf16(const wxUint16* input, wxUint32& output) | |
116 | { | |
117 | if ((*input < 0xd800) || (*input > 0xdfff)) | |
118 | { | |
119 | output = *input; | |
120 | return 1; | |
121 | } | |
122 | else if ((input[1] < 0xdc00) || (input[1] > 0xdfff)) | |
123 | { | |
124 | output = *input; | |
125 | return wxCONV_FAILED; | |
126 | } | |
127 | else | |
128 | { | |
129 | output = ((input[0] - 0xd7c0) << 10) + (input[1] - 0xdc00); | |
130 | return 2; | |
131 | } | |
132 | } | |
133 | ||
134 | #ifdef WC_UTF16 | |
135 | typedef wchar_t wxDecodeSurrogate_t; | |
136 | #else // !WC_UTF16 | |
137 | typedef wxUint16 wxDecodeSurrogate_t; | |
138 | #endif // WC_UTF16/!WC_UTF16 | |
139 | ||
140 | // returns the next UTF-32 character from the wchar_t buffer and advances the | |
141 | // pointer to the character after this one | |
142 | // | |
143 | // if an invalid character is found, *pSrc is set to NULL, the caller must | |
144 | // check for this | |
145 | static wxUint32 wxDecodeSurrogate(const wxDecodeSurrogate_t **pSrc) | |
146 | { | |
147 | wxUint32 out; | |
148 | const size_t | |
149 | n = decode_utf16(wx_reinterpret_cast(const wxUint16 *, *pSrc), out); | |
150 | if ( n == wxCONV_FAILED ) | |
151 | *pSrc = NULL; | |
152 | else | |
153 | *pSrc += n; | |
154 | ||
155 | return out; | |
156 | } | |
157 | ||
158 | // ---------------------------------------------------------------------------- | |
159 | // wxMBConv | |
160 | // ---------------------------------------------------------------------------- | |
161 | ||
162 | size_t | |
163 | wxMBConv::ToWChar(wchar_t *dst, size_t dstLen, | |
164 | const char *src, size_t srcLen) const | |
165 | { | |
166 | // although new conversion classes are supposed to implement this function | |
167 | // directly, the existins ones only implement the old MB2WC() and so, to | |
168 | // avoid to have to rewrite all conversion classes at once, we provide a | |
169 | // default (but not efficient) implementation of this one in terms of the | |
170 | // old function by copying the input to ensure that it's NUL-terminated and | |
171 | // then using MB2WC() to convert it | |
172 | ||
173 | // the number of chars [which would be] written to dst [if it were not NULL] | |
174 | size_t dstWritten = 0; | |
175 | ||
176 | // the number of NULs terminating this string | |
177 | size_t nulLen = 0; // not really needed, but just to avoid warnings | |
178 | ||
179 | // if we were not given the input size we just have to assume that the | |
180 | // string is properly terminated as we have no way of knowing how long it | |
181 | // is anyhow, but if we do have the size check whether there are enough | |
182 | // NULs at the end | |
183 | wxCharBuffer bufTmp; | |
184 | const char *srcEnd; | |
185 | if ( srcLen != wxNO_LEN ) | |
186 | { | |
187 | // we need to know how to find the end of this string | |
188 | nulLen = GetMBNulLen(); | |
189 | if ( nulLen == wxCONV_FAILED ) | |
190 | return wxCONV_FAILED; | |
191 | ||
192 | // if there are enough NULs we can avoid the copy | |
193 | if ( srcLen < nulLen || NotAllNULs(src + srcLen - nulLen, nulLen) ) | |
194 | { | |
195 | // make a copy in order to properly NUL-terminate the string | |
196 | bufTmp = wxCharBuffer(srcLen + nulLen - 1 /* 1 will be added */); | |
197 | char * const p = bufTmp.data(); | |
198 | memcpy(p, src, srcLen); | |
199 | for ( char *s = p + srcLen; s < p + srcLen + nulLen; s++ ) | |
200 | *s = '\0'; | |
201 | ||
202 | src = bufTmp; | |
203 | } | |
204 | ||
205 | srcEnd = src + srcLen; | |
206 | } | |
207 | else // quit after the first loop iteration | |
208 | { | |
209 | srcEnd = NULL; | |
210 | } | |
211 | ||
212 | for ( ;; ) | |
213 | { | |
214 | // try to convert the current chunk | |
215 | size_t lenChunk = MB2WC(NULL, src, 0); | |
216 | if ( lenChunk == wxCONV_FAILED ) | |
217 | return wxCONV_FAILED; | |
218 | ||
219 | lenChunk++; // for the L'\0' at the end of this chunk | |
220 | ||
221 | dstWritten += lenChunk; | |
222 | ||
223 | if ( lenChunk == 1 ) | |
224 | { | |
225 | // nothing left in the input string, conversion succeeded | |
226 | break; | |
227 | } | |
228 | ||
229 | if ( dst ) | |
230 | { | |
231 | if ( dstWritten > dstLen ) | |
232 | return wxCONV_FAILED; | |
233 | ||
234 | if ( MB2WC(dst, src, lenChunk) == wxCONV_FAILED ) | |
235 | return wxCONV_FAILED; | |
236 | ||
237 | dst += lenChunk; | |
238 | } | |
239 | ||
240 | if ( !srcEnd ) | |
241 | { | |
242 | // we convert just one chunk in this case as this is the entire | |
243 | // string anyhow | |
244 | break; | |
245 | } | |
246 | ||
247 | // advance the input pointer past the end of this chunk | |
248 | while ( NotAllNULs(src, nulLen) ) | |
249 | { | |
250 | // notice that we must skip over multiple bytes here as we suppose | |
251 | // that if NUL takes 2 or 4 bytes, then all the other characters do | |
252 | // too and so if advanced by a single byte we might erroneously | |
253 | // detect sequences of NUL bytes in the middle of the input | |
254 | src += nulLen; | |
255 | } | |
256 | ||
257 | src += nulLen; // skipping over its terminator as well | |
258 | ||
259 | // note that ">=" (and not just "==") is needed here as the terminator | |
260 | // we skipped just above could be inside or just after the buffer | |
261 | // delimited by inEnd | |
262 | if ( src >= srcEnd ) | |
263 | break; | |
264 | } | |
265 | ||
266 | return dstWritten; | |
267 | } | |
268 | ||
269 | size_t | |
270 | wxMBConv::FromWChar(char *dst, size_t dstLen, | |
271 | const wchar_t *src, size_t srcLen) const | |
272 | { | |
273 | // the number of chars [which would be] written to dst [if it were not NULL] | |
274 | size_t dstWritten = 0; | |
275 | ||
276 | // make a copy of the input string unless it is already properly | |
277 | // NUL-terminated | |
278 | // | |
279 | // if we don't know its length we have no choice but to assume that it is, | |
280 | // indeed, properly terminated | |
281 | wxWCharBuffer bufTmp; | |
282 | if ( srcLen == wxNO_LEN ) | |
283 | { | |
284 | srcLen = wxWcslen(src) + 1; | |
285 | } | |
286 | else if ( srcLen != 0 && src[srcLen - 1] != L'\0' ) | |
287 | { | |
288 | // make a copy in order to properly NUL-terminate the string | |
289 | bufTmp = wxWCharBuffer(srcLen); | |
290 | memcpy(bufTmp.data(), src, srcLen * sizeof(wchar_t)); | |
291 | src = bufTmp; | |
292 | } | |
293 | ||
294 | const size_t lenNul = GetMBNulLen(); | |
295 | for ( const wchar_t * const srcEnd = src + srcLen; | |
296 | src < srcEnd; | |
297 | src += wxWcslen(src) + 1 /* skip L'\0' too */ ) | |
298 | { | |
299 | // try to convert the current chunk | |
300 | size_t lenChunk = WC2MB(NULL, src, 0); | |
301 | ||
302 | if ( lenChunk == wxCONV_FAILED ) | |
303 | return wxCONV_FAILED; | |
304 | ||
305 | lenChunk += lenNul; | |
306 | dstWritten += lenChunk; | |
307 | ||
308 | if ( dst ) | |
309 | { | |
310 | if ( dstWritten > dstLen ) | |
311 | return wxCONV_FAILED; | |
312 | ||
313 | if ( WC2MB(dst, src, lenChunk) == wxCONV_FAILED ) | |
314 | return wxCONV_FAILED; | |
315 | ||
316 | dst += lenChunk; | |
317 | } | |
318 | } | |
319 | ||
320 | return dstWritten; | |
321 | } | |
322 | ||
323 | size_t wxMBConv::MB2WC(wchar_t *outBuff, const char *inBuff, size_t outLen) const | |
324 | { | |
325 | size_t rc = ToWChar(outBuff, outLen, inBuff); | |
326 | if ( rc != wxCONV_FAILED ) | |
327 | { | |
328 | // ToWChar() returns the buffer length, i.e. including the trailing | |
329 | // NUL, while this method doesn't take it into account | |
330 | rc--; | |
331 | } | |
332 | ||
333 | return rc; | |
334 | } | |
335 | ||
336 | size_t wxMBConv::WC2MB(char *outBuff, const wchar_t *inBuff, size_t outLen) const | |
337 | { | |
338 | size_t rc = FromWChar(outBuff, outLen, inBuff); | |
339 | if ( rc != wxCONV_FAILED ) | |
340 | { | |
341 | rc -= GetMBNulLen(); | |
342 | } | |
343 | ||
344 | return rc; | |
345 | } | |
346 | ||
347 | wxMBConv::~wxMBConv() | |
348 | { | |
349 | // nothing to do here (necessary for Darwin linking probably) | |
350 | } | |
351 | ||
352 | const wxWCharBuffer wxMBConv::cMB2WC(const char *psz) const | |
353 | { | |
354 | if ( psz ) | |
355 | { | |
356 | // calculate the length of the buffer needed first | |
357 | const size_t nLen = ToWChar(NULL, 0, psz); | |
358 | if ( nLen != wxCONV_FAILED ) | |
359 | { | |
360 | // now do the actual conversion | |
361 | wxWCharBuffer buf(nLen - 1 /* +1 added implicitly */); | |
362 | ||
363 | // +1 for the trailing NULL | |
364 | if ( ToWChar(buf.data(), nLen, psz) != wxCONV_FAILED ) | |
365 | return buf; | |
366 | } | |
367 | } | |
368 | ||
369 | return wxWCharBuffer(); | |
370 | } | |
371 | ||
372 | const wxCharBuffer wxMBConv::cWC2MB(const wchar_t *pwz) const | |
373 | { | |
374 | if ( pwz ) | |
375 | { | |
376 | const size_t nLen = FromWChar(NULL, 0, pwz); | |
377 | if ( nLen != wxCONV_FAILED ) | |
378 | { | |
379 | wxCharBuffer buf(nLen - 1); | |
380 | if ( FromWChar(buf.data(), nLen, pwz) != wxCONV_FAILED ) | |
381 | return buf; | |
382 | } | |
383 | } | |
384 | ||
385 | return wxCharBuffer(); | |
386 | } | |
387 | ||
388 | const wxWCharBuffer | |
389 | wxMBConv::cMB2WC(const char *inBuff, size_t inLen, size_t *outLen) const | |
390 | { | |
391 | const size_t dstLen = ToWChar(NULL, 0, inBuff, inLen); | |
392 | if ( dstLen != wxCONV_FAILED ) | |
393 | { | |
394 | wxWCharBuffer wbuf(dstLen - 1); | |
395 | if ( ToWChar(wbuf.data(), dstLen, inBuff, inLen) != wxCONV_FAILED ) | |
396 | { | |
397 | if ( outLen ) | |
398 | { | |
399 | *outLen = dstLen; | |
400 | if ( wbuf[dstLen - 1] == L'\0' ) | |
401 | (*outLen)--; | |
402 | } | |
403 | ||
404 | return wbuf; | |
405 | } | |
406 | } | |
407 | ||
408 | if ( outLen ) | |
409 | *outLen = 0; | |
410 | ||
411 | return wxWCharBuffer(); | |
412 | } | |
413 | ||
414 | const wxCharBuffer | |
415 | wxMBConv::cWC2MB(const wchar_t *inBuff, size_t inLen, size_t *outLen) const | |
416 | { | |
417 | size_t dstLen = FromWChar(NULL, 0, inBuff, inLen); | |
418 | if ( dstLen != wxCONV_FAILED ) | |
419 | { | |
420 | // special case of empty input: can't allocate 0 size buffer below as | |
421 | // wxCharBuffer insists on NUL-terminating it | |
422 | wxCharBuffer buf(dstLen ? dstLen - 1 : 1); | |
423 | if ( FromWChar(buf.data(), dstLen, inBuff, inLen) != wxCONV_FAILED ) | |
424 | { | |
425 | if ( outLen ) | |
426 | { | |
427 | *outLen = dstLen; | |
428 | ||
429 | const size_t nulLen = GetMBNulLen(); | |
430 | if ( dstLen >= nulLen && | |
431 | !NotAllNULs(buf.data() + dstLen - nulLen, nulLen) ) | |
432 | { | |
433 | // in this case the output is NUL-terminated and we're not | |
434 | // supposed to count NUL | |
435 | *outLen -= nulLen; | |
436 | } | |
437 | } | |
438 | ||
439 | return buf; | |
440 | } | |
441 | } | |
442 | ||
443 | if ( outLen ) | |
444 | *outLen = 0; | |
445 | ||
446 | return wxCharBuffer(); | |
447 | } | |
448 | ||
449 | // ---------------------------------------------------------------------------- | |
450 | // wxMBConvLibc | |
451 | // ---------------------------------------------------------------------------- | |
452 | ||
453 | size_t wxMBConvLibc::MB2WC(wchar_t *buf, const char *psz, size_t n) const | |
454 | { | |
455 | return wxMB2WC(buf, psz, n); | |
456 | } | |
457 | ||
458 | size_t wxMBConvLibc::WC2MB(char *buf, const wchar_t *psz, size_t n) const | |
459 | { | |
460 | return wxWC2MB(buf, psz, n); | |
461 | } | |
462 | ||
463 | // ---------------------------------------------------------------------------- | |
464 | // wxConvBrokenFileNames | |
465 | // ---------------------------------------------------------------------------- | |
466 | ||
467 | #ifdef __UNIX__ | |
468 | ||
469 | wxConvBrokenFileNames::wxConvBrokenFileNames(const wxString& charset) | |
470 | { | |
471 | if ( wxStricmp(charset, _T("UTF-8")) == 0 || | |
472 | wxStricmp(charset, _T("UTF8")) == 0 ) | |
473 | m_conv = new wxMBConvUTF8(wxMBConvUTF8::MAP_INVALID_UTF8_TO_PUA); | |
474 | else | |
475 | m_conv = new wxCSConv(charset); | |
476 | } | |
477 | ||
478 | #endif // __UNIX__ | |
479 | ||
480 | // ---------------------------------------------------------------------------- | |
481 | // UTF-7 | |
482 | // ---------------------------------------------------------------------------- | |
483 | ||
484 | // Implementation (C) 2004 Fredrik Roubert | |
485 | ||
486 | // | |
487 | // BASE64 decoding table | |
488 | // | |
489 | static const unsigned char utf7unb64[] = | |
490 | { | |
491 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
492 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
493 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
494 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
495 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
496 | 0xff, 0xff, 0xff, 0x3e, 0xff, 0xff, 0xff, 0x3f, | |
497 | 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, | |
498 | 0x3c, 0x3d, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
499 | 0xff, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, | |
500 | 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, | |
501 | 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, | |
502 | 0x17, 0x18, 0x19, 0xff, 0xff, 0xff, 0xff, 0xff, | |
503 | 0xff, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20, | |
504 | 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, | |
505 | 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 0x30, | |
506 | 0x31, 0x32, 0x33, 0xff, 0xff, 0xff, 0xff, 0xff, | |
507 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
508 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
509 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
510 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
511 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
512 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
513 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
514 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
515 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
516 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
517 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
518 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
519 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
520 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
521 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
522 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff | |
523 | }; | |
524 | ||
525 | size_t wxMBConvUTF7::MB2WC(wchar_t *buf, const char *psz, size_t n) const | |
526 | { | |
527 | size_t len = 0; | |
528 | ||
529 | while ( *psz && (!buf || (len < n)) ) | |
530 | { | |
531 | unsigned char cc = *psz++; | |
532 | if (cc != '+') | |
533 | { | |
534 | // plain ASCII char | |
535 | if (buf) | |
536 | *buf++ = cc; | |
537 | len++; | |
538 | } | |
539 | else if (*psz == '-') | |
540 | { | |
541 | // encoded plus sign | |
542 | if (buf) | |
543 | *buf++ = cc; | |
544 | len++; | |
545 | psz++; | |
546 | } | |
547 | else // start of BASE64 encoded string | |
548 | { | |
549 | bool lsb, ok; | |
550 | unsigned int d, l; | |
551 | for ( ok = lsb = false, d = 0, l = 0; | |
552 | (cc = utf7unb64[(unsigned char)*psz]) != 0xff; | |
553 | psz++ ) | |
554 | { | |
555 | d <<= 6; | |
556 | d += cc; | |
557 | for (l += 6; l >= 8; lsb = !lsb) | |
558 | { | |
559 | unsigned char c = (unsigned char)((d >> (l -= 8)) % 256); | |
560 | if (lsb) | |
561 | { | |
562 | if (buf) | |
563 | *buf++ |= c; | |
564 | len ++; | |
565 | } | |
566 | else | |
567 | { | |
568 | if (buf) | |
569 | *buf = (wchar_t)(c << 8); | |
570 | } | |
571 | ||
572 | ok = true; | |
573 | } | |
574 | } | |
575 | ||
576 | if ( !ok ) | |
577 | { | |
578 | // in valid UTF7 we should have valid characters after '+' | |
579 | return wxCONV_FAILED; | |
580 | } | |
581 | ||
582 | if (*psz == '-') | |
583 | psz++; | |
584 | } | |
585 | } | |
586 | ||
587 | if ( buf && (len < n) ) | |
588 | *buf = '\0'; | |
589 | ||
590 | return len; | |
591 | } | |
592 | ||
593 | // | |
594 | // BASE64 encoding table | |
595 | // | |
596 | static const unsigned char utf7enb64[] = | |
597 | { | |
598 | 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', | |
599 | 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', | |
600 | 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', | |
601 | 'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f', | |
602 | 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', | |
603 | 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', | |
604 | 'w', 'x', 'y', 'z', '0', '1', '2', '3', | |
605 | '4', '5', '6', '7', '8', '9', '+', '/' | |
606 | }; | |
607 | ||
608 | // | |
609 | // UTF-7 encoding table | |
610 | // | |
611 | // 0 - Set D (directly encoded characters) | |
612 | // 1 - Set O (optional direct characters) | |
613 | // 2 - whitespace characters (optional) | |
614 | // 3 - special characters | |
615 | // | |
616 | static const unsigned char utf7encode[128] = | |
617 | { | |
618 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 3, 3, 2, 3, 3, | |
619 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
620 | 2, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 3, 0, 0, 0, 3, | |
621 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, | |
622 | 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
623 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 3, 1, 1, 1, | |
624 | 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
625 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 3, 3 | |
626 | }; | |
627 | ||
628 | size_t wxMBConvUTF7::WC2MB(char *buf, const wchar_t *psz, size_t n) const | |
629 | { | |
630 | size_t len = 0; | |
631 | ||
632 | while (*psz && ((!buf) || (len < n))) | |
633 | { | |
634 | wchar_t cc = *psz++; | |
635 | if (cc < 0x80 && utf7encode[cc] < 1) | |
636 | { | |
637 | // plain ASCII char | |
638 | if (buf) | |
639 | *buf++ = (char)cc; | |
640 | ||
641 | len++; | |
642 | } | |
643 | #ifndef WC_UTF16 | |
644 | else if (((wxUint32)cc) > 0xffff) | |
645 | { | |
646 | // no surrogate pair generation (yet?) | |
647 | return wxCONV_FAILED; | |
648 | } | |
649 | #endif | |
650 | else | |
651 | { | |
652 | if (buf) | |
653 | *buf++ = '+'; | |
654 | ||
655 | len++; | |
656 | if (cc != '+') | |
657 | { | |
658 | // BASE64 encode string | |
659 | unsigned int lsb, d, l; | |
660 | for (d = 0, l = 0; /*nothing*/; psz++) | |
661 | { | |
662 | for (lsb = 0; lsb < 2; lsb ++) | |
663 | { | |
664 | d <<= 8; | |
665 | d += lsb ? cc & 0xff : (cc & 0xff00) >> 8; | |
666 | ||
667 | for (l += 8; l >= 6; ) | |
668 | { | |
669 | l -= 6; | |
670 | if (buf) | |
671 | *buf++ = utf7enb64[(d >> l) % 64]; | |
672 | len++; | |
673 | } | |
674 | } | |
675 | ||
676 | cc = *psz; | |
677 | if (!(cc) || (cc < 0x80 && utf7encode[cc] < 1)) | |
678 | break; | |
679 | } | |
680 | ||
681 | if (l != 0) | |
682 | { | |
683 | if (buf) | |
684 | *buf++ = utf7enb64[((d % 16) << (6 - l)) % 64]; | |
685 | ||
686 | len++; | |
687 | } | |
688 | } | |
689 | ||
690 | if (buf) | |
691 | *buf++ = '-'; | |
692 | len++; | |
693 | } | |
694 | } | |
695 | ||
696 | if (buf && (len < n)) | |
697 | *buf = 0; | |
698 | ||
699 | return len; | |
700 | } | |
701 | ||
702 | // ---------------------------------------------------------------------------- | |
703 | // UTF-8 | |
704 | // ---------------------------------------------------------------------------- | |
705 | ||
706 | static wxUint32 utf8_max[]= | |
707 | { 0x7f, 0x7ff, 0xffff, 0x1fffff, 0x3ffffff, 0x7fffffff, 0xffffffff }; | |
708 | ||
709 | // boundaries of the private use area we use to (temporarily) remap invalid | |
710 | // characters invalid in a UTF-8 encoded string | |
711 | const wxUint32 wxUnicodePUA = 0x100000; | |
712 | const wxUint32 wxUnicodePUAEnd = wxUnicodePUA + 256; | |
713 | ||
714 | // this table gives the length of the UTF-8 encoding from its first character: | |
715 | unsigned char tableUtf8Lengths[256] = { | |
716 | // single-byte sequences (ASCII): | |
717 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // 00..0F | |
718 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // 10..1F | |
719 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // 20..2F | |
720 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // 30..3F | |
721 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // 40..4F | |
722 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // 50..5F | |
723 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // 60..6F | |
724 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // 70..7F | |
725 | ||
726 | // these are invalid: | |
727 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 80..8F | |
728 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 90..9F | |
729 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // A0..AF | |
730 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // B0..BF | |
731 | 0, 0, // C0,C1 | |
732 | ||
733 | // two-byte sequences: | |
734 | 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, // C2..CF | |
735 | 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, // D0..DF | |
736 | ||
737 | // three-byte sequences: | |
738 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, // E0..EF | |
739 | ||
740 | // four-byte sequences: | |
741 | 4, 4, 4, 4, 4, // F0..F4 | |
742 | ||
743 | // these are invalid again (5- or 6-byte | |
744 | // sequences and sequences for code points | |
745 | // above U+10FFFF, as restricted by RFC 3629): | |
746 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 // F5..FF | |
747 | }; | |
748 | ||
749 | size_t | |
750 | wxMBConvStrictUTF8::ToWChar(wchar_t *dst, size_t dstLen, | |
751 | const char *src, size_t srcLen) const | |
752 | { | |
753 | wchar_t *out = dstLen ? dst : NULL; | |
754 | size_t written = 0; | |
755 | ||
756 | if ( srcLen == wxNO_LEN ) | |
757 | srcLen = strlen(src) + 1; | |
758 | ||
759 | for ( const char *p = src; ; p++ ) | |
760 | { | |
761 | if ( !(srcLen == wxNO_LEN ? *p : srcLen) ) | |
762 | { | |
763 | // all done successfully, just add the trailing NULL if we are not | |
764 | // using explicit length | |
765 | if ( srcLen == wxNO_LEN ) | |
766 | { | |
767 | if ( out ) | |
768 | { | |
769 | if ( !dstLen ) | |
770 | break; | |
771 | ||
772 | *out = L'\0'; | |
773 | } | |
774 | ||
775 | written++; | |
776 | } | |
777 | ||
778 | return written; | |
779 | } | |
780 | ||
781 | unsigned char c = *p; | |
782 | unsigned len = tableUtf8Lengths[c]; | |
783 | if ( !len ) | |
784 | break; | |
785 | ||
786 | if ( srcLen < len ) // the test works for wxNO_LEN too | |
787 | break; | |
788 | ||
789 | if ( srcLen != wxNO_LEN ) | |
790 | srcLen -= len; | |
791 | ||
792 | if ( out && !dstLen-- ) | |
793 | break; | |
794 | ||
795 | ||
796 | // Char. number range | UTF-8 octet sequence | |
797 | // (hexadecimal) | (binary) | |
798 | // ----------------------+--------------------------------------------- | |
799 | // 0000 0000 - 0000 007F | 0xxxxxxx | |
800 | // 0000 0080 - 0000 07FF | 110xxxxx 10xxxxxx | |
801 | // 0000 0800 - 0000 FFFF | 1110xxxx 10xxxxxx 10xxxxxx | |
802 | // 0001 0000 - 0010 FFFF | 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx | |
803 | // | |
804 | // Code point value is stored in bits marked with 'x', lowest-order bit | |
805 | // of the value on the right side in the diagram above. | |
806 | // (from RFC 3629) | |
807 | ||
808 | // mask to extract lead byte's value ('x' bits above), by sequence length: | |
809 | static const unsigned char leadValueMask[] = { 0x7F, 0x1F, 0x0F, 0x07 }; | |
810 | ||
811 | // mask and value of lead byte's most significant bits, by length: | |
812 | static const unsigned char leadMarkerMask[] = { 0x80, 0xE0, 0xF0, 0xF8 }; | |
813 | static const unsigned char leadMarkerVal[] = { 0x00, 0xC0, 0xE0, 0xF0 }; | |
814 | ||
815 | len--; // it's more convenient to work with 0-based length here | |
816 | ||
817 | // extract the lead byte's value bits: | |
818 | if ( (c & leadMarkerMask[len]) != leadMarkerVal[len] ) | |
819 | break; | |
820 | ||
821 | wxUint32 code = c & leadValueMask[len]; | |
822 | ||
823 | // all remaining bytes, if any, are handled in the same way regardless of | |
824 | // sequence's length: | |
825 | for ( ; len; --len ) | |
826 | { | |
827 | c = *++p; | |
828 | if ( (c & 0xC0) != 0x80 ) | |
829 | return wxCONV_FAILED; | |
830 | ||
831 | code <<= 6; | |
832 | code |= c & 0x3F; | |
833 | } | |
834 | ||
835 | #ifdef WC_UTF16 | |
836 | // cast is ok because wchar_t == wxUint16 if WC_UTF16 | |
837 | if ( encode_utf16(code, (wxUint16 *)out) == 2 ) | |
838 | { | |
839 | if ( out ) | |
840 | out++; | |
841 | written++; | |
842 | } | |
843 | #else // !WC_UTF16 | |
844 | if ( out ) | |
845 | *out = code; | |
846 | #endif // WC_UTF16/!WC_UTF16 | |
847 | ||
848 | if ( out ) | |
849 | out++; | |
850 | ||
851 | written++; | |
852 | } | |
853 | ||
854 | return wxCONV_FAILED; | |
855 | } | |
856 | ||
857 | size_t | |
858 | wxMBConvStrictUTF8::FromWChar(char *dst, size_t dstLen, | |
859 | const wchar_t *src, size_t srcLen) const | |
860 | { | |
861 | char *out = dstLen ? dst : NULL; | |
862 | size_t written = 0; | |
863 | ||
864 | for ( const wchar_t *wp = src; ; wp++ ) | |
865 | { | |
866 | if ( !(srcLen == wxNO_LEN ? *wp : srcLen--) ) | |
867 | { | |
868 | // all done successfully, just add the trailing NULL if we are not | |
869 | // using explicit length | |
870 | if ( srcLen == wxNO_LEN ) | |
871 | { | |
872 | if ( out ) | |
873 | { | |
874 | if ( !dstLen ) | |
875 | break; | |
876 | ||
877 | *out = '\0'; | |
878 | } | |
879 | ||
880 | written++; | |
881 | } | |
882 | ||
883 | return written; | |
884 | } | |
885 | ||
886 | ||
887 | wxUint32 code; | |
888 | #ifdef WC_UTF16 | |
889 | // cast is ok for WC_UTF16 | |
890 | if ( decode_utf16((const wxUint16 *)wp, code) == 2 ) | |
891 | { | |
892 | // skip the next char too as we decoded a surrogate | |
893 | wp++; | |
894 | } | |
895 | #else // wchar_t is UTF-32 | |
896 | code = *wp & 0x7fffffff; | |
897 | #endif | |
898 | ||
899 | unsigned len; | |
900 | if ( code <= 0x7F ) | |
901 | { | |
902 | len = 1; | |
903 | if ( out ) | |
904 | { | |
905 | if ( dstLen < len ) | |
906 | break; | |
907 | ||
908 | out[0] = (char)code; | |
909 | } | |
910 | } | |
911 | else if ( code <= 0x07FF ) | |
912 | { | |
913 | len = 2; | |
914 | if ( out ) | |
915 | { | |
916 | if ( dstLen < len ) | |
917 | break; | |
918 | ||
919 | // NB: this line takes 6 least significant bits, encodes them as | |
920 | // 10xxxxxx and discards them so that the next byte can be encoded: | |
921 | out[1] = 0x80 | (code & 0x3F); code >>= 6; | |
922 | out[0] = 0xC0 | code; | |
923 | } | |
924 | } | |
925 | else if ( code < 0xFFFF ) | |
926 | { | |
927 | len = 3; | |
928 | if ( out ) | |
929 | { | |
930 | if ( dstLen < len ) | |
931 | break; | |
932 | ||
933 | out[2] = 0x80 | (code & 0x3F); code >>= 6; | |
934 | out[1] = 0x80 | (code & 0x3F); code >>= 6; | |
935 | out[0] = 0xE0 | code; | |
936 | } | |
937 | } | |
938 | else if ( code <= 0x10FFFF ) | |
939 | { | |
940 | len = 4; | |
941 | if ( out ) | |
942 | { | |
943 | if ( dstLen < len ) | |
944 | break; | |
945 | ||
946 | out[3] = 0x80 | (code & 0x3F); code >>= 6; | |
947 | out[2] = 0x80 | (code & 0x3F); code >>= 6; | |
948 | out[1] = 0x80 | (code & 0x3F); code >>= 6; | |
949 | out[0] = 0xF0 | code; | |
950 | } | |
951 | } | |
952 | else | |
953 | { | |
954 | wxFAIL_MSG( _T("trying to encode undefined Unicode character") ); | |
955 | break; | |
956 | } | |
957 | ||
958 | if ( out ) | |
959 | { | |
960 | out += len; | |
961 | dstLen -= len; | |
962 | } | |
963 | ||
964 | written += len; | |
965 | } | |
966 | ||
967 | // we only get here if an error occurs during decoding | |
968 | return wxCONV_FAILED; | |
969 | } | |
970 | ||
971 | size_t wxMBConvUTF8::MB2WC(wchar_t *buf, const char *psz, size_t n) const | |
972 | { | |
973 | if ( m_options == MAP_INVALID_UTF8_NOT ) | |
974 | return wxMBConvStrictUTF8::MB2WC(buf, psz, n); | |
975 | ||
976 | size_t len = 0; | |
977 | ||
978 | while (*psz && ((!buf) || (len < n))) | |
979 | { | |
980 | const char *opsz = psz; | |
981 | bool invalid = false; | |
982 | unsigned char cc = *psz++, fc = cc; | |
983 | unsigned cnt; | |
984 | for (cnt = 0; fc & 0x80; cnt++) | |
985 | fc <<= 1; | |
986 | ||
987 | if (!cnt) | |
988 | { | |
989 | // plain ASCII char | |
990 | if (buf) | |
991 | *buf++ = cc; | |
992 | len++; | |
993 | ||
994 | // escape the escape character for octal escapes | |
995 | if ((m_options & MAP_INVALID_UTF8_TO_OCTAL) | |
996 | && cc == '\\' && (!buf || len < n)) | |
997 | { | |
998 | if (buf) | |
999 | *buf++ = cc; | |
1000 | len++; | |
1001 | } | |
1002 | } | |
1003 | else | |
1004 | { | |
1005 | cnt--; | |
1006 | if (!cnt) | |
1007 | { | |
1008 | // invalid UTF-8 sequence | |
1009 | invalid = true; | |
1010 | } | |
1011 | else | |
1012 | { | |
1013 | unsigned ocnt = cnt - 1; | |
1014 | wxUint32 res = cc & (0x3f >> cnt); | |
1015 | while (cnt--) | |
1016 | { | |
1017 | cc = *psz; | |
1018 | if ((cc & 0xC0) != 0x80) | |
1019 | { | |
1020 | // invalid UTF-8 sequence | |
1021 | invalid = true; | |
1022 | break; | |
1023 | } | |
1024 | ||
1025 | psz++; | |
1026 | res = (res << 6) | (cc & 0x3f); | |
1027 | } | |
1028 | ||
1029 | if (invalid || res <= utf8_max[ocnt]) | |
1030 | { | |
1031 | // illegal UTF-8 encoding | |
1032 | invalid = true; | |
1033 | } | |
1034 | else if ((m_options & MAP_INVALID_UTF8_TO_PUA) && | |
1035 | res >= wxUnicodePUA && res < wxUnicodePUAEnd) | |
1036 | { | |
1037 | // if one of our PUA characters turns up externally | |
1038 | // it must also be treated as an illegal sequence | |
1039 | // (a bit like you have to escape an escape character) | |
1040 | invalid = true; | |
1041 | } | |
1042 | else | |
1043 | { | |
1044 | #ifdef WC_UTF16 | |
1045 | // cast is ok because wchar_t == wxUint16 if WC_UTF16 | |
1046 | size_t pa = encode_utf16(res, (wxUint16 *)buf); | |
1047 | if (pa == wxCONV_FAILED) | |
1048 | { | |
1049 | invalid = true; | |
1050 | } | |
1051 | else | |
1052 | { | |
1053 | if (buf) | |
1054 | buf += pa; | |
1055 | len += pa; | |
1056 | } | |
1057 | #else // !WC_UTF16 | |
1058 | if (buf) | |
1059 | *buf++ = (wchar_t)res; | |
1060 | len++; | |
1061 | #endif // WC_UTF16/!WC_UTF16 | |
1062 | } | |
1063 | } | |
1064 | ||
1065 | if (invalid) | |
1066 | { | |
1067 | if (m_options & MAP_INVALID_UTF8_TO_PUA) | |
1068 | { | |
1069 | while (opsz < psz && (!buf || len < n)) | |
1070 | { | |
1071 | #ifdef WC_UTF16 | |
1072 | // cast is ok because wchar_t == wxUuint16 if WC_UTF16 | |
1073 | size_t pa = encode_utf16((unsigned char)*opsz + wxUnicodePUA, (wxUint16 *)buf); | |
1074 | wxASSERT(pa != wxCONV_FAILED); | |
1075 | if (buf) | |
1076 | buf += pa; | |
1077 | opsz++; | |
1078 | len += pa; | |
1079 | #else | |
1080 | if (buf) | |
1081 | *buf++ = (wchar_t)(wxUnicodePUA + (unsigned char)*opsz); | |
1082 | opsz++; | |
1083 | len++; | |
1084 | #endif | |
1085 | } | |
1086 | } | |
1087 | else if (m_options & MAP_INVALID_UTF8_TO_OCTAL) | |
1088 | { | |
1089 | while (opsz < psz && (!buf || len < n)) | |
1090 | { | |
1091 | if ( buf && len + 3 < n ) | |
1092 | { | |
1093 | unsigned char on = *opsz; | |
1094 | *buf++ = L'\\'; | |
1095 | *buf++ = (wchar_t)( L'0' + on / 0100 ); | |
1096 | *buf++ = (wchar_t)( L'0' + (on % 0100) / 010 ); | |
1097 | *buf++ = (wchar_t)( L'0' + on % 010 ); | |
1098 | } | |
1099 | ||
1100 | opsz++; | |
1101 | len += 4; | |
1102 | } | |
1103 | } | |
1104 | else // MAP_INVALID_UTF8_NOT | |
1105 | { | |
1106 | return wxCONV_FAILED; | |
1107 | } | |
1108 | } | |
1109 | } | |
1110 | } | |
1111 | ||
1112 | if (buf && (len < n)) | |
1113 | *buf = 0; | |
1114 | ||
1115 | return len; | |
1116 | } | |
1117 | ||
1118 | static inline bool isoctal(wchar_t wch) | |
1119 | { | |
1120 | return L'0' <= wch && wch <= L'7'; | |
1121 | } | |
1122 | ||
1123 | size_t wxMBConvUTF8::WC2MB(char *buf, const wchar_t *psz, size_t n) const | |
1124 | { | |
1125 | if ( m_options == MAP_INVALID_UTF8_NOT ) | |
1126 | return wxMBConvStrictUTF8::WC2MB(buf, psz, n); | |
1127 | ||
1128 | size_t len = 0; | |
1129 | ||
1130 | while (*psz && ((!buf) || (len < n))) | |
1131 | { | |
1132 | wxUint32 cc; | |
1133 | ||
1134 | #ifdef WC_UTF16 | |
1135 | // cast is ok for WC_UTF16 | |
1136 | size_t pa = decode_utf16((const wxUint16 *)psz, cc); | |
1137 | psz += (pa == wxCONV_FAILED) ? 1 : pa; | |
1138 | #else | |
1139 | cc = (*psz++) & 0x7fffffff; | |
1140 | #endif | |
1141 | ||
1142 | if ( (m_options & MAP_INVALID_UTF8_TO_PUA) | |
1143 | && cc >= wxUnicodePUA && cc < wxUnicodePUAEnd ) | |
1144 | { | |
1145 | if (buf) | |
1146 | *buf++ = (char)(cc - wxUnicodePUA); | |
1147 | len++; | |
1148 | } | |
1149 | else if ( (m_options & MAP_INVALID_UTF8_TO_OCTAL) | |
1150 | && cc == L'\\' && psz[0] == L'\\' ) | |
1151 | { | |
1152 | if (buf) | |
1153 | *buf++ = (char)cc; | |
1154 | psz++; | |
1155 | len++; | |
1156 | } | |
1157 | else if ( (m_options & MAP_INVALID_UTF8_TO_OCTAL) && | |
1158 | cc == L'\\' && | |
1159 | isoctal(psz[0]) && isoctal(psz[1]) && isoctal(psz[2]) ) | |
1160 | { | |
1161 | if (buf) | |
1162 | { | |
1163 | *buf++ = (char) ((psz[0] - L'0') * 0100 + | |
1164 | (psz[1] - L'0') * 010 + | |
1165 | (psz[2] - L'0')); | |
1166 | } | |
1167 | ||
1168 | psz += 3; | |
1169 | len++; | |
1170 | } | |
1171 | else | |
1172 | { | |
1173 | unsigned cnt; | |
1174 | for (cnt = 0; cc > utf8_max[cnt]; cnt++) | |
1175 | { | |
1176 | } | |
1177 | ||
1178 | if (!cnt) | |
1179 | { | |
1180 | // plain ASCII char | |
1181 | if (buf) | |
1182 | *buf++ = (char) cc; | |
1183 | len++; | |
1184 | } | |
1185 | else | |
1186 | { | |
1187 | len += cnt + 1; | |
1188 | if (buf) | |
1189 | { | |
1190 | *buf++ = (char) ((-128 >> cnt) | ((cc >> (cnt * 6)) & (0x3f >> cnt))); | |
1191 | while (cnt--) | |
1192 | *buf++ = (char) (0x80 | ((cc >> (cnt * 6)) & 0x3f)); | |
1193 | } | |
1194 | } | |
1195 | } | |
1196 | } | |
1197 | ||
1198 | if (buf && (len < n)) | |
1199 | *buf = 0; | |
1200 | ||
1201 | return len; | |
1202 | } | |
1203 | ||
1204 | // ============================================================================ | |
1205 | // UTF-16 | |
1206 | // ============================================================================ | |
1207 | ||
1208 | #ifdef WORDS_BIGENDIAN | |
1209 | #define wxMBConvUTF16straight wxMBConvUTF16BE | |
1210 | #define wxMBConvUTF16swap wxMBConvUTF16LE | |
1211 | #else | |
1212 | #define wxMBConvUTF16swap wxMBConvUTF16BE | |
1213 | #define wxMBConvUTF16straight wxMBConvUTF16LE | |
1214 | #endif | |
1215 | ||
1216 | /* static */ | |
1217 | size_t wxMBConvUTF16Base::GetLength(const char *src, size_t srcLen) | |
1218 | { | |
1219 | if ( srcLen == wxNO_LEN ) | |
1220 | { | |
1221 | // count the number of bytes in input, including the trailing NULs | |
1222 | const wxUint16 *inBuff = wx_reinterpret_cast(const wxUint16 *, src); | |
1223 | for ( srcLen = 1; *inBuff++; srcLen++ ) | |
1224 | ; | |
1225 | ||
1226 | srcLen *= BYTES_PER_CHAR; | |
1227 | } | |
1228 | else // we already have the length | |
1229 | { | |
1230 | // we can only convert an entire number of UTF-16 characters | |
1231 | if ( srcLen % BYTES_PER_CHAR ) | |
1232 | return wxCONV_FAILED; | |
1233 | } | |
1234 | ||
1235 | return srcLen; | |
1236 | } | |
1237 | ||
1238 | // case when in-memory representation is UTF-16 too | |
1239 | #ifdef WC_UTF16 | |
1240 | ||
1241 | // ---------------------------------------------------------------------------- | |
1242 | // conversions without endianness change | |
1243 | // ---------------------------------------------------------------------------- | |
1244 | ||
1245 | size_t | |
1246 | wxMBConvUTF16straight::ToWChar(wchar_t *dst, size_t dstLen, | |
1247 | const char *src, size_t srcLen) const | |
1248 | { | |
1249 | // set up the scene for using memcpy() (which is presumably more efficient | |
1250 | // than copying the bytes one by one) | |
1251 | srcLen = GetLength(src, srcLen); | |
1252 | if ( srcLen == wxNO_LEN ) | |
1253 | return wxCONV_FAILED; | |
1254 | ||
1255 | const size_t inLen = srcLen / BYTES_PER_CHAR; | |
1256 | if ( dst ) | |
1257 | { | |
1258 | if ( dstLen < inLen ) | |
1259 | return wxCONV_FAILED; | |
1260 | ||
1261 | memcpy(dst, src, srcLen); | |
1262 | } | |
1263 | ||
1264 | return inLen; | |
1265 | } | |
1266 | ||
1267 | size_t | |
1268 | wxMBConvUTF16straight::FromWChar(char *dst, size_t dstLen, | |
1269 | const wchar_t *src, size_t srcLen) const | |
1270 | { | |
1271 | if ( srcLen == wxNO_LEN ) | |
1272 | srcLen = wxWcslen(src) + 1; | |
1273 | ||
1274 | srcLen *= BYTES_PER_CHAR; | |
1275 | ||
1276 | if ( dst ) | |
1277 | { | |
1278 | if ( dstLen < srcLen ) | |
1279 | return wxCONV_FAILED; | |
1280 | ||
1281 | memcpy(dst, src, srcLen); | |
1282 | } | |
1283 | ||
1284 | return srcLen; | |
1285 | } | |
1286 | ||
1287 | // ---------------------------------------------------------------------------- | |
1288 | // endian-reversing conversions | |
1289 | // ---------------------------------------------------------------------------- | |
1290 | ||
1291 | size_t | |
1292 | wxMBConvUTF16swap::ToWChar(wchar_t *dst, size_t dstLen, | |
1293 | const char *src, size_t srcLen) const | |
1294 | { | |
1295 | srcLen = GetLength(src, srcLen); | |
1296 | if ( srcLen == wxNO_LEN ) | |
1297 | return wxCONV_FAILED; | |
1298 | ||
1299 | srcLen /= BYTES_PER_CHAR; | |
1300 | ||
1301 | if ( dst ) | |
1302 | { | |
1303 | if ( dstLen < srcLen ) | |
1304 | return wxCONV_FAILED; | |
1305 | ||
1306 | const wxUint16 *inBuff = wx_reinterpret_cast(const wxUint16 *, src); | |
1307 | for ( size_t n = 0; n < srcLen; n++, inBuff++ ) | |
1308 | { | |
1309 | *dst++ = wxUINT16_SWAP_ALWAYS(*inBuff); | |
1310 | } | |
1311 | } | |
1312 | ||
1313 | return srcLen; | |
1314 | } | |
1315 | ||
1316 | size_t | |
1317 | wxMBConvUTF16swap::FromWChar(char *dst, size_t dstLen, | |
1318 | const wchar_t *src, size_t srcLen) const | |
1319 | { | |
1320 | if ( srcLen == wxNO_LEN ) | |
1321 | srcLen = wxWcslen(src) + 1; | |
1322 | ||
1323 | srcLen *= BYTES_PER_CHAR; | |
1324 | ||
1325 | if ( dst ) | |
1326 | { | |
1327 | if ( dstLen < srcLen ) | |
1328 | return wxCONV_FAILED; | |
1329 | ||
1330 | wxUint16 *outBuff = wx_reinterpret_cast(wxUint16 *, dst); | |
1331 | for ( size_t n = 0; n < srcLen; n += BYTES_PER_CHAR, src++ ) | |
1332 | { | |
1333 | *outBuff++ = wxUINT16_SWAP_ALWAYS(*src); | |
1334 | } | |
1335 | } | |
1336 | ||
1337 | return srcLen; | |
1338 | } | |
1339 | ||
1340 | #else // !WC_UTF16: wchar_t is UTF-32 | |
1341 | ||
1342 | // ---------------------------------------------------------------------------- | |
1343 | // conversions without endianness change | |
1344 | // ---------------------------------------------------------------------------- | |
1345 | ||
1346 | size_t | |
1347 | wxMBConvUTF16straight::ToWChar(wchar_t *dst, size_t dstLen, | |
1348 | const char *src, size_t srcLen) const | |
1349 | { | |
1350 | srcLen = GetLength(src, srcLen); | |
1351 | if ( srcLen == wxNO_LEN ) | |
1352 | return wxCONV_FAILED; | |
1353 | ||
1354 | const size_t inLen = srcLen / BYTES_PER_CHAR; | |
1355 | if ( !dst ) | |
1356 | { | |
1357 | // optimization: return maximal space which could be needed for this | |
1358 | // string even if the real size could be smaller if the buffer contains | |
1359 | // any surrogates | |
1360 | return inLen; | |
1361 | } | |
1362 | ||
1363 | size_t outLen = 0; | |
1364 | const wxUint16 *inBuff = wx_reinterpret_cast(const wxUint16 *, src); | |
1365 | for ( const wxUint16 * const inEnd = inBuff + inLen; inBuff < inEnd; ) | |
1366 | { | |
1367 | const wxUint32 ch = wxDecodeSurrogate(&inBuff); | |
1368 | if ( !inBuff ) | |
1369 | return wxCONV_FAILED; | |
1370 | ||
1371 | if ( ++outLen > dstLen ) | |
1372 | return wxCONV_FAILED; | |
1373 | ||
1374 | *dst++ = ch; | |
1375 | } | |
1376 | ||
1377 | ||
1378 | return outLen; | |
1379 | } | |
1380 | ||
1381 | size_t | |
1382 | wxMBConvUTF16straight::FromWChar(char *dst, size_t dstLen, | |
1383 | const wchar_t *src, size_t srcLen) const | |
1384 | { | |
1385 | if ( srcLen == wxNO_LEN ) | |
1386 | srcLen = wxWcslen(src) + 1; | |
1387 | ||
1388 | size_t outLen = 0; | |
1389 | wxUint16 *outBuff = wx_reinterpret_cast(wxUint16 *, dst); | |
1390 | for ( size_t n = 0; n < srcLen; n++ ) | |
1391 | { | |
1392 | wxUint16 cc[2]; | |
1393 | const size_t numChars = encode_utf16(*src++, cc); | |
1394 | if ( numChars == wxCONV_FAILED ) | |
1395 | return wxCONV_FAILED; | |
1396 | ||
1397 | outLen += numChars * BYTES_PER_CHAR; | |
1398 | if ( outBuff ) | |
1399 | { | |
1400 | if ( outLen > dstLen ) | |
1401 | return wxCONV_FAILED; | |
1402 | ||
1403 | *outBuff++ = cc[0]; | |
1404 | if ( numChars == 2 ) | |
1405 | { | |
1406 | // second character of a surrogate | |
1407 | *outBuff++ = cc[1]; | |
1408 | } | |
1409 | } | |
1410 | } | |
1411 | ||
1412 | return outLen; | |
1413 | } | |
1414 | ||
1415 | // ---------------------------------------------------------------------------- | |
1416 | // endian-reversing conversions | |
1417 | // ---------------------------------------------------------------------------- | |
1418 | ||
1419 | size_t | |
1420 | wxMBConvUTF16swap::ToWChar(wchar_t *dst, size_t dstLen, | |
1421 | const char *src, size_t srcLen) const | |
1422 | { | |
1423 | srcLen = GetLength(src, srcLen); | |
1424 | if ( srcLen == wxNO_LEN ) | |
1425 | return wxCONV_FAILED; | |
1426 | ||
1427 | const size_t inLen = srcLen / BYTES_PER_CHAR; | |
1428 | if ( !dst ) | |
1429 | { | |
1430 | // optimization: return maximal space which could be needed for this | |
1431 | // string even if the real size could be smaller if the buffer contains | |
1432 | // any surrogates | |
1433 | return inLen; | |
1434 | } | |
1435 | ||
1436 | size_t outLen = 0; | |
1437 | const wxUint16 *inBuff = wx_reinterpret_cast(const wxUint16 *, src); | |
1438 | for ( const wxUint16 * const inEnd = inBuff + inLen; inBuff < inEnd; ) | |
1439 | { | |
1440 | wxUint32 ch; | |
1441 | wxUint16 tmp[2]; | |
1442 | ||
1443 | tmp[0] = wxUINT16_SWAP_ALWAYS(*inBuff); | |
1444 | inBuff++; | |
1445 | tmp[1] = wxUINT16_SWAP_ALWAYS(*inBuff); | |
1446 | ||
1447 | const size_t numChars = decode_utf16(tmp, ch); | |
1448 | if ( numChars == wxCONV_FAILED ) | |
1449 | return wxCONV_FAILED; | |
1450 | ||
1451 | if ( numChars == 2 ) | |
1452 | inBuff++; | |
1453 | ||
1454 | if ( ++outLen > dstLen ) | |
1455 | return wxCONV_FAILED; | |
1456 | ||
1457 | *dst++ = ch; | |
1458 | } | |
1459 | ||
1460 | ||
1461 | return outLen; | |
1462 | } | |
1463 | ||
1464 | size_t | |
1465 | wxMBConvUTF16swap::FromWChar(char *dst, size_t dstLen, | |
1466 | const wchar_t *src, size_t srcLen) const | |
1467 | { | |
1468 | if ( srcLen == wxNO_LEN ) | |
1469 | srcLen = wxWcslen(src) + 1; | |
1470 | ||
1471 | size_t outLen = 0; | |
1472 | wxUint16 *outBuff = wx_reinterpret_cast(wxUint16 *, dst); | |
1473 | for ( const wchar_t *srcEnd = src + srcLen; src < srcEnd; src++ ) | |
1474 | { | |
1475 | wxUint16 cc[2]; | |
1476 | const size_t numChars = encode_utf16(*src, cc); | |
1477 | if ( numChars == wxCONV_FAILED ) | |
1478 | return wxCONV_FAILED; | |
1479 | ||
1480 | outLen += numChars * BYTES_PER_CHAR; | |
1481 | if ( outBuff ) | |
1482 | { | |
1483 | if ( outLen > dstLen ) | |
1484 | return wxCONV_FAILED; | |
1485 | ||
1486 | *outBuff++ = wxUINT16_SWAP_ALWAYS(cc[0]); | |
1487 | if ( numChars == 2 ) | |
1488 | { | |
1489 | // second character of a surrogate | |
1490 | *outBuff++ = wxUINT16_SWAP_ALWAYS(cc[1]); | |
1491 | } | |
1492 | } | |
1493 | } | |
1494 | ||
1495 | return outLen; | |
1496 | } | |
1497 | ||
1498 | #endif // WC_UTF16/!WC_UTF16 | |
1499 | ||
1500 | ||
1501 | // ============================================================================ | |
1502 | // UTF-32 | |
1503 | // ============================================================================ | |
1504 | ||
1505 | #ifdef WORDS_BIGENDIAN | |
1506 | #define wxMBConvUTF32straight wxMBConvUTF32BE | |
1507 | #define wxMBConvUTF32swap wxMBConvUTF32LE | |
1508 | #else | |
1509 | #define wxMBConvUTF32swap wxMBConvUTF32BE | |
1510 | #define wxMBConvUTF32straight wxMBConvUTF32LE | |
1511 | #endif | |
1512 | ||
1513 | ||
1514 | WXDLLIMPEXP_DATA_BASE(wxMBConvUTF32LE) wxConvUTF32LE; | |
1515 | WXDLLIMPEXP_DATA_BASE(wxMBConvUTF32BE) wxConvUTF32BE; | |
1516 | ||
1517 | /* static */ | |
1518 | size_t wxMBConvUTF32Base::GetLength(const char *src, size_t srcLen) | |
1519 | { | |
1520 | if ( srcLen == wxNO_LEN ) | |
1521 | { | |
1522 | // count the number of bytes in input, including the trailing NULs | |
1523 | const wxUint32 *inBuff = wx_reinterpret_cast(const wxUint32 *, src); | |
1524 | for ( srcLen = 1; *inBuff++; srcLen++ ) | |
1525 | ; | |
1526 | ||
1527 | srcLen *= BYTES_PER_CHAR; | |
1528 | } | |
1529 | else // we already have the length | |
1530 | { | |
1531 | // we can only convert an entire number of UTF-32 characters | |
1532 | if ( srcLen % BYTES_PER_CHAR ) | |
1533 | return wxCONV_FAILED; | |
1534 | } | |
1535 | ||
1536 | return srcLen; | |
1537 | } | |
1538 | ||
1539 | // case when in-memory representation is UTF-16 | |
1540 | #ifdef WC_UTF16 | |
1541 | ||
1542 | // ---------------------------------------------------------------------------- | |
1543 | // conversions without endianness change | |
1544 | // ---------------------------------------------------------------------------- | |
1545 | ||
1546 | size_t | |
1547 | wxMBConvUTF32straight::ToWChar(wchar_t *dst, size_t dstLen, | |
1548 | const char *src, size_t srcLen) const | |
1549 | { | |
1550 | srcLen = GetLength(src, srcLen); | |
1551 | if ( srcLen == wxNO_LEN ) | |
1552 | return wxCONV_FAILED; | |
1553 | ||
1554 | const wxUint32 *inBuff = wx_reinterpret_cast(const wxUint32 *, src); | |
1555 | const size_t inLen = srcLen / BYTES_PER_CHAR; | |
1556 | size_t outLen = 0; | |
1557 | for ( size_t n = 0; n < inLen; n++ ) | |
1558 | { | |
1559 | wxUint16 cc[2]; | |
1560 | const size_t numChars = encode_utf16(*inBuff++, cc); | |
1561 | if ( numChars == wxCONV_FAILED ) | |
1562 | return wxCONV_FAILED; | |
1563 | ||
1564 | outLen += numChars; | |
1565 | if ( dst ) | |
1566 | { | |
1567 | if ( outLen > dstLen ) | |
1568 | return wxCONV_FAILED; | |
1569 | ||
1570 | *dst++ = cc[0]; | |
1571 | if ( numChars == 2 ) | |
1572 | { | |
1573 | // second character of a surrogate | |
1574 | *dst++ = cc[1]; | |
1575 | } | |
1576 | } | |
1577 | } | |
1578 | ||
1579 | return outLen; | |
1580 | } | |
1581 | ||
1582 | size_t | |
1583 | wxMBConvUTF32straight::FromWChar(char *dst, size_t dstLen, | |
1584 | const wchar_t *src, size_t srcLen) const | |
1585 | { | |
1586 | if ( srcLen == wxNO_LEN ) | |
1587 | srcLen = wxWcslen(src) + 1; | |
1588 | ||
1589 | if ( !dst ) | |
1590 | { | |
1591 | // optimization: return maximal space which could be needed for this | |
1592 | // string instead of the exact amount which could be less if there are | |
1593 | // any surrogates in the input | |
1594 | // | |
1595 | // we consider that surrogates are rare enough to make it worthwhile to | |
1596 | // avoid running the loop below at the cost of slightly extra memory | |
1597 | // consumption | |
1598 | return srcLen * BYTES_PER_CHAR; | |
1599 | } | |
1600 | ||
1601 | wxUint32 *outBuff = wx_reinterpret_cast(wxUint32 *, dst); | |
1602 | size_t outLen = 0; | |
1603 | for ( const wchar_t * const srcEnd = src + srcLen; src < srcEnd; ) | |
1604 | { | |
1605 | const wxUint32 ch = wxDecodeSurrogate(&src); | |
1606 | if ( !src ) | |
1607 | return wxCONV_FAILED; | |
1608 | ||
1609 | outLen += BYTES_PER_CHAR; | |
1610 | ||
1611 | if ( outLen > dstLen ) | |
1612 | return wxCONV_FAILED; | |
1613 | ||
1614 | *outBuff++ = ch; | |
1615 | } | |
1616 | ||
1617 | return outLen; | |
1618 | } | |
1619 | ||
1620 | // ---------------------------------------------------------------------------- | |
1621 | // endian-reversing conversions | |
1622 | // ---------------------------------------------------------------------------- | |
1623 | ||
1624 | size_t | |
1625 | wxMBConvUTF32swap::ToWChar(wchar_t *dst, size_t dstLen, | |
1626 | const char *src, size_t srcLen) const | |
1627 | { | |
1628 | srcLen = GetLength(src, srcLen); | |
1629 | if ( srcLen == wxNO_LEN ) | |
1630 | return wxCONV_FAILED; | |
1631 | ||
1632 | const wxUint32 *inBuff = wx_reinterpret_cast(const wxUint32 *, src); | |
1633 | const size_t inLen = srcLen / BYTES_PER_CHAR; | |
1634 | size_t outLen = 0; | |
1635 | for ( size_t n = 0; n < inLen; n++, inBuff++ ) | |
1636 | { | |
1637 | wxUint16 cc[2]; | |
1638 | const size_t numChars = encode_utf16(wxUINT32_SWAP_ALWAYS(*inBuff), cc); | |
1639 | if ( numChars == wxCONV_FAILED ) | |
1640 | return wxCONV_FAILED; | |
1641 | ||
1642 | outLen += numChars; | |
1643 | if ( dst ) | |
1644 | { | |
1645 | if ( outLen > dstLen ) | |
1646 | return wxCONV_FAILED; | |
1647 | ||
1648 | *dst++ = cc[0]; | |
1649 | if ( numChars == 2 ) | |
1650 | { | |
1651 | // second character of a surrogate | |
1652 | *dst++ = cc[1]; | |
1653 | } | |
1654 | } | |
1655 | } | |
1656 | ||
1657 | return outLen; | |
1658 | } | |
1659 | ||
1660 | size_t | |
1661 | wxMBConvUTF32swap::FromWChar(char *dst, size_t dstLen, | |
1662 | const wchar_t *src, size_t srcLen) const | |
1663 | { | |
1664 | if ( srcLen == wxNO_LEN ) | |
1665 | srcLen = wxWcslen(src) + 1; | |
1666 | ||
1667 | if ( !dst ) | |
1668 | { | |
1669 | // optimization: return maximal space which could be needed for this | |
1670 | // string instead of the exact amount which could be less if there are | |
1671 | // any surrogates in the input | |
1672 | // | |
1673 | // we consider that surrogates are rare enough to make it worthwhile to | |
1674 | // avoid running the loop below at the cost of slightly extra memory | |
1675 | // consumption | |
1676 | return srcLen*BYTES_PER_CHAR; | |
1677 | } | |
1678 | ||
1679 | wxUint32 *outBuff = wx_reinterpret_cast(wxUint32 *, dst); | |
1680 | size_t outLen = 0; | |
1681 | for ( const wchar_t * const srcEnd = src + srcLen; src < srcEnd; ) | |
1682 | { | |
1683 | const wxUint32 ch = wxDecodeSurrogate(&src); | |
1684 | if ( !src ) | |
1685 | return wxCONV_FAILED; | |
1686 | ||
1687 | outLen += BYTES_PER_CHAR; | |
1688 | ||
1689 | if ( outLen > dstLen ) | |
1690 | return wxCONV_FAILED; | |
1691 | ||
1692 | *outBuff++ = wxUINT32_SWAP_ALWAYS(ch); | |
1693 | } | |
1694 | ||
1695 | return outLen; | |
1696 | } | |
1697 | ||
1698 | #else // !WC_UTF16: wchar_t is UTF-32 | |
1699 | ||
1700 | // ---------------------------------------------------------------------------- | |
1701 | // conversions without endianness change | |
1702 | // ---------------------------------------------------------------------------- | |
1703 | ||
1704 | size_t | |
1705 | wxMBConvUTF32straight::ToWChar(wchar_t *dst, size_t dstLen, | |
1706 | const char *src, size_t srcLen) const | |
1707 | { | |
1708 | // use memcpy() as it should be much faster than hand-written loop | |
1709 | srcLen = GetLength(src, srcLen); | |
1710 | if ( srcLen == wxNO_LEN ) | |
1711 | return wxCONV_FAILED; | |
1712 | ||
1713 | const size_t inLen = srcLen/BYTES_PER_CHAR; | |
1714 | if ( dst ) | |
1715 | { | |
1716 | if ( dstLen < inLen ) | |
1717 | return wxCONV_FAILED; | |
1718 | ||
1719 | memcpy(dst, src, srcLen); | |
1720 | } | |
1721 | ||
1722 | return inLen; | |
1723 | } | |
1724 | ||
1725 | size_t | |
1726 | wxMBConvUTF32straight::FromWChar(char *dst, size_t dstLen, | |
1727 | const wchar_t *src, size_t srcLen) const | |
1728 | { | |
1729 | if ( srcLen == wxNO_LEN ) | |
1730 | srcLen = wxWcslen(src) + 1; | |
1731 | ||
1732 | srcLen *= BYTES_PER_CHAR; | |
1733 | ||
1734 | if ( dst ) | |
1735 | { | |
1736 | if ( dstLen < srcLen ) | |
1737 | return wxCONV_FAILED; | |
1738 | ||
1739 | memcpy(dst, src, srcLen); | |
1740 | } | |
1741 | ||
1742 | return srcLen; | |
1743 | } | |
1744 | ||
1745 | // ---------------------------------------------------------------------------- | |
1746 | // endian-reversing conversions | |
1747 | // ---------------------------------------------------------------------------- | |
1748 | ||
1749 | size_t | |
1750 | wxMBConvUTF32swap::ToWChar(wchar_t *dst, size_t dstLen, | |
1751 | const char *src, size_t srcLen) const | |
1752 | { | |
1753 | srcLen = GetLength(src, srcLen); | |
1754 | if ( srcLen == wxNO_LEN ) | |
1755 | return wxCONV_FAILED; | |
1756 | ||
1757 | srcLen /= BYTES_PER_CHAR; | |
1758 | ||
1759 | if ( dst ) | |
1760 | { | |
1761 | if ( dstLen < srcLen ) | |
1762 | return wxCONV_FAILED; | |
1763 | ||
1764 | const wxUint32 *inBuff = wx_reinterpret_cast(const wxUint32 *, src); | |
1765 | for ( size_t n = 0; n < srcLen; n++, inBuff++ ) | |
1766 | { | |
1767 | *dst++ = wxUINT32_SWAP_ALWAYS(*inBuff); | |
1768 | } | |
1769 | } | |
1770 | ||
1771 | return srcLen; | |
1772 | } | |
1773 | ||
1774 | size_t | |
1775 | wxMBConvUTF32swap::FromWChar(char *dst, size_t dstLen, | |
1776 | const wchar_t *src, size_t srcLen) const | |
1777 | { | |
1778 | if ( srcLen == wxNO_LEN ) | |
1779 | srcLen = wxWcslen(src) + 1; | |
1780 | ||
1781 | srcLen *= BYTES_PER_CHAR; | |
1782 | ||
1783 | if ( dst ) | |
1784 | { | |
1785 | if ( dstLen < srcLen ) | |
1786 | return wxCONV_FAILED; | |
1787 | ||
1788 | wxUint32 *outBuff = wx_reinterpret_cast(wxUint32 *, dst); | |
1789 | for ( size_t n = 0; n < srcLen; n += BYTES_PER_CHAR, src++ ) | |
1790 | { | |
1791 | *outBuff++ = wxUINT32_SWAP_ALWAYS(*src); | |
1792 | } | |
1793 | } | |
1794 | ||
1795 | return srcLen; | |
1796 | } | |
1797 | ||
1798 | #endif // WC_UTF16/!WC_UTF16 | |
1799 | ||
1800 | ||
1801 | // ============================================================================ | |
1802 | // The classes doing conversion using the iconv_xxx() functions | |
1803 | // ============================================================================ | |
1804 | ||
1805 | #ifdef HAVE_ICONV | |
1806 | ||
1807 | // VS: glibc 2.1.3 is broken in that iconv() conversion to/from UCS4 fails with | |
1808 | // E2BIG if output buffer is _exactly_ as big as needed. Such case is | |
1809 | // (unless there's yet another bug in glibc) the only case when iconv() | |
1810 | // returns with (size_t)-1 (which means error) and says there are 0 bytes | |
1811 | // left in the input buffer -- when _real_ error occurs, | |
1812 | // bytes-left-in-input buffer is non-zero. Hence, this alternative test for | |
1813 | // iconv() failure. | |
1814 | // [This bug does not appear in glibc 2.2.] | |
1815 | #if defined(__GLIBC__) && __GLIBC__ == 2 && __GLIBC_MINOR__ <= 1 | |
1816 | #define ICONV_FAILED(cres, bufLeft) ((cres == (size_t)-1) && \ | |
1817 | (errno != E2BIG || bufLeft != 0)) | |
1818 | #else | |
1819 | #define ICONV_FAILED(cres, bufLeft) (cres == (size_t)-1) | |
1820 | #endif | |
1821 | ||
1822 | #define ICONV_CHAR_CAST(x) ((ICONV_CONST char **)(x)) | |
1823 | ||
1824 | #define ICONV_T_INVALID ((iconv_t)-1) | |
1825 | ||
1826 | #if SIZEOF_WCHAR_T == 4 | |
1827 | #define WC_BSWAP wxUINT32_SWAP_ALWAYS | |
1828 | #define WC_ENC wxFONTENCODING_UTF32 | |
1829 | #elif SIZEOF_WCHAR_T == 2 | |
1830 | #define WC_BSWAP wxUINT16_SWAP_ALWAYS | |
1831 | #define WC_ENC wxFONTENCODING_UTF16 | |
1832 | #else // sizeof(wchar_t) != 2 nor 4 | |
1833 | // does this ever happen? | |
1834 | #error "Unknown sizeof(wchar_t): please report this to wx-dev@lists.wxwindows.org" | |
1835 | #endif | |
1836 | ||
1837 | // ---------------------------------------------------------------------------- | |
1838 | // wxMBConv_iconv: encapsulates an iconv character set | |
1839 | // ---------------------------------------------------------------------------- | |
1840 | ||
1841 | class wxMBConv_iconv : public wxMBConv | |
1842 | { | |
1843 | public: | |
1844 | wxMBConv_iconv(const char *name); | |
1845 | virtual ~wxMBConv_iconv(); | |
1846 | ||
1847 | virtual size_t MB2WC(wchar_t *buf, const char *psz, size_t n) const; | |
1848 | virtual size_t WC2MB(char *buf, const wchar_t *psz, size_t n) const; | |
1849 | ||
1850 | // classify this encoding as explained in wxMBConv::GetMBNulLen() comment | |
1851 | virtual size_t GetMBNulLen() const; | |
1852 | ||
1853 | #if wxUSE_UNICODE_UTF8 | |
1854 | virtual bool IsUTF8() const; | |
1855 | #endif | |
1856 | ||
1857 | virtual wxMBConv *Clone() const | |
1858 | { | |
1859 | wxMBConv_iconv *p = new wxMBConv_iconv(m_name.ToAscii()); | |
1860 | p->m_minMBCharWidth = m_minMBCharWidth; | |
1861 | return p; | |
1862 | } | |
1863 | ||
1864 | bool IsOk() const | |
1865 | { return (m2w != ICONV_T_INVALID) && (w2m != ICONV_T_INVALID); } | |
1866 | ||
1867 | protected: | |
1868 | // the iconv handlers used to translate from multibyte | |
1869 | // to wide char and in the other direction | |
1870 | iconv_t m2w, | |
1871 | w2m; | |
1872 | ||
1873 | #if wxUSE_THREADS | |
1874 | // guards access to m2w and w2m objects | |
1875 | wxMutex m_iconvMutex; | |
1876 | #endif | |
1877 | ||
1878 | private: | |
1879 | // the name (for iconv_open()) of a wide char charset -- if none is | |
1880 | // available on this machine, it will remain NULL | |
1881 | static wxString ms_wcCharsetName; | |
1882 | ||
1883 | // true if the wide char encoding we use (i.e. ms_wcCharsetName) has | |
1884 | // different endian-ness than the native one | |
1885 | static bool ms_wcNeedsSwap; | |
1886 | ||
1887 | ||
1888 | // name of the encoding handled by this conversion | |
1889 | wxString m_name; | |
1890 | ||
1891 | // cached result of GetMBNulLen(); set to 0 meaning "unknown" | |
1892 | // initially | |
1893 | size_t m_minMBCharWidth; | |
1894 | }; | |
1895 | ||
1896 | // make the constructor available for unit testing | |
1897 | WXDLLIMPEXP_BASE wxMBConv* new_wxMBConv_iconv( const char* name ) | |
1898 | { | |
1899 | wxMBConv_iconv* result = new wxMBConv_iconv( name ); | |
1900 | if ( !result->IsOk() ) | |
1901 | { | |
1902 | delete result; | |
1903 | return 0; | |
1904 | } | |
1905 | ||
1906 | return result; | |
1907 | } | |
1908 | ||
1909 | wxString wxMBConv_iconv::ms_wcCharsetName; | |
1910 | bool wxMBConv_iconv::ms_wcNeedsSwap = false; | |
1911 | ||
1912 | wxMBConv_iconv::wxMBConv_iconv(const char *name) | |
1913 | : m_name(name) | |
1914 | { | |
1915 | m_minMBCharWidth = 0; | |
1916 | ||
1917 | // check for charset that represents wchar_t: | |
1918 | if ( ms_wcCharsetName.empty() ) | |
1919 | { | |
1920 | wxLogTrace(TRACE_STRCONV, _T("Looking for wide char codeset:")); | |
1921 | ||
1922 | #if wxUSE_FONTMAP | |
1923 | const wxChar **names = wxFontMapperBase::GetAllEncodingNames(WC_ENC); | |
1924 | #else // !wxUSE_FONTMAP | |
1925 | static const wxChar *names_static[] = | |
1926 | { | |
1927 | #if SIZEOF_WCHAR_T == 4 | |
1928 | _T("UCS-4"), | |
1929 | #elif SIZEOF_WCHAR_T = 2 | |
1930 | _T("UCS-2"), | |
1931 | #endif | |
1932 | NULL | |
1933 | }; | |
1934 | const wxChar **names = names_static; | |
1935 | #endif // wxUSE_FONTMAP/!wxUSE_FONTMAP | |
1936 | ||
1937 | for ( ; *names && ms_wcCharsetName.empty(); ++names ) | |
1938 | { | |
1939 | const wxString nameCS(*names); | |
1940 | ||
1941 | // first try charset with explicit bytesex info (e.g. "UCS-4LE"): | |
1942 | wxString nameXE(nameCS); | |
1943 | ||
1944 | #ifdef WORDS_BIGENDIAN | |
1945 | nameXE += _T("BE"); | |
1946 | #else // little endian | |
1947 | nameXE += _T("LE"); | |
1948 | #endif | |
1949 | ||
1950 | wxLogTrace(TRACE_STRCONV, _T(" trying charset \"%s\""), | |
1951 | nameXE.c_str()); | |
1952 | ||
1953 | m2w = iconv_open(nameXE.ToAscii(), name); | |
1954 | if ( m2w == ICONV_T_INVALID ) | |
1955 | { | |
1956 | // try charset w/o bytesex info (e.g. "UCS4") | |
1957 | wxLogTrace(TRACE_STRCONV, _T(" trying charset \"%s\""), | |
1958 | nameCS.c_str()); | |
1959 | m2w = iconv_open(nameCS.ToAscii(), name); | |
1960 | ||
1961 | // and check for bytesex ourselves: | |
1962 | if ( m2w != ICONV_T_INVALID ) | |
1963 | { | |
1964 | char buf[2], *bufPtr; | |
1965 | wchar_t wbuf[2], *wbufPtr; | |
1966 | size_t insz, outsz; | |
1967 | size_t res; | |
1968 | ||
1969 | buf[0] = 'A'; | |
1970 | buf[1] = 0; | |
1971 | wbuf[0] = 0; | |
1972 | insz = 2; | |
1973 | outsz = SIZEOF_WCHAR_T * 2; | |
1974 | wbufPtr = wbuf; | |
1975 | bufPtr = buf; | |
1976 | ||
1977 | res = iconv( | |
1978 | m2w, ICONV_CHAR_CAST(&bufPtr), &insz, | |
1979 | (char**)&wbufPtr, &outsz); | |
1980 | ||
1981 | if (ICONV_FAILED(res, insz)) | |
1982 | { | |
1983 | wxLogLastError(wxT("iconv")); | |
1984 | wxLogError(_("Conversion to charset '%s' doesn't work."), | |
1985 | nameCS.c_str()); | |
1986 | } | |
1987 | else // ok, can convert to this encoding, remember it | |
1988 | { | |
1989 | ms_wcCharsetName = nameCS; | |
1990 | ms_wcNeedsSwap = wbuf[0] != (wchar_t)buf[0]; | |
1991 | } | |
1992 | } | |
1993 | } | |
1994 | else // use charset not requiring byte swapping | |
1995 | { | |
1996 | ms_wcCharsetName = nameXE; | |
1997 | } | |
1998 | } | |
1999 | ||
2000 | wxLogTrace(TRACE_STRCONV, | |
2001 | wxT("iconv wchar_t charset is \"%s\"%s"), | |
2002 | ms_wcCharsetName.empty() ? wxString("<none>") | |
2003 | : ms_wcCharsetName, | |
2004 | ms_wcNeedsSwap ? _T(" (needs swap)") | |
2005 | : _T("")); | |
2006 | } | |
2007 | else // we already have ms_wcCharsetName | |
2008 | { | |
2009 | m2w = iconv_open(ms_wcCharsetName.ToAscii(), name); | |
2010 | } | |
2011 | ||
2012 | if ( ms_wcCharsetName.empty() ) | |
2013 | { | |
2014 | w2m = ICONV_T_INVALID; | |
2015 | } | |
2016 | else | |
2017 | { | |
2018 | w2m = iconv_open(name, ms_wcCharsetName.ToAscii()); | |
2019 | if ( w2m == ICONV_T_INVALID ) | |
2020 | { | |
2021 | wxLogTrace(TRACE_STRCONV, | |
2022 | wxT("\"%s\" -> \"%s\" works but not the converse!?"), | |
2023 | ms_wcCharsetName.c_str(), name); | |
2024 | } | |
2025 | } | |
2026 | } | |
2027 | ||
2028 | wxMBConv_iconv::~wxMBConv_iconv() | |
2029 | { | |
2030 | if ( m2w != ICONV_T_INVALID ) | |
2031 | iconv_close(m2w); | |
2032 | if ( w2m != ICONV_T_INVALID ) | |
2033 | iconv_close(w2m); | |
2034 | } | |
2035 | ||
2036 | size_t wxMBConv_iconv::MB2WC(wchar_t *buf, const char *psz, size_t n) const | |
2037 | { | |
2038 | // find the string length: notice that must be done differently for | |
2039 | // NUL-terminated strings and UTF-16/32 which are terminated with 2/4 NULs | |
2040 | size_t inbuf; | |
2041 | const size_t nulLen = GetMBNulLen(); | |
2042 | switch ( nulLen ) | |
2043 | { | |
2044 | default: | |
2045 | return wxCONV_FAILED; | |
2046 | ||
2047 | case 1: | |
2048 | inbuf = strlen(psz); // arguably more optimized than our version | |
2049 | break; | |
2050 | ||
2051 | case 2: | |
2052 | case 4: | |
2053 | // for UTF-16/32 not only we need to have 2/4 consecutive NULs but | |
2054 | // they also have to start at character boundary and not span two | |
2055 | // adjacent characters | |
2056 | const char *p; | |
2057 | for ( p = psz; NotAllNULs(p, nulLen); p += nulLen ) | |
2058 | ; | |
2059 | inbuf = p - psz; | |
2060 | break; | |
2061 | } | |
2062 | ||
2063 | #if wxUSE_THREADS | |
2064 | // NB: iconv() is MT-safe, but each thread must use its own iconv_t handle. | |
2065 | // Unfortunately there are a couple of global wxCSConv objects such as | |
2066 | // wxConvLocal that are used all over wx code, so we have to make sure | |
2067 | // the handle is used by at most one thread at the time. Otherwise | |
2068 | // only a few wx classes would be safe to use from non-main threads | |
2069 | // as MB<->WC conversion would fail "randomly". | |
2070 | wxMutexLocker lock(wxConstCast(this, wxMBConv_iconv)->m_iconvMutex); | |
2071 | #endif // wxUSE_THREADS | |
2072 | ||
2073 | size_t outbuf = n * SIZEOF_WCHAR_T; | |
2074 | size_t res, cres; | |
2075 | // VS: Use these instead of psz, buf because iconv() modifies its arguments: | |
2076 | wchar_t *bufPtr = buf; | |
2077 | const char *pszPtr = psz; | |
2078 | ||
2079 | if (buf) | |
2080 | { | |
2081 | // have destination buffer, convert there | |
2082 | cres = iconv(m2w, | |
2083 | ICONV_CHAR_CAST(&pszPtr), &inbuf, | |
2084 | (char**)&bufPtr, &outbuf); | |
2085 | res = n - (outbuf / SIZEOF_WCHAR_T); | |
2086 | ||
2087 | if (ms_wcNeedsSwap) | |
2088 | { | |
2089 | // convert to native endianness | |
2090 | for ( unsigned i = 0; i < res; i++ ) | |
2091 | buf[n] = WC_BSWAP(buf[i]); | |
2092 | } | |
2093 | ||
2094 | // NUL-terminate the string if there is any space left | |
2095 | if (res < n) | |
2096 | buf[res] = 0; | |
2097 | } | |
2098 | else | |
2099 | { | |
2100 | // no destination buffer... convert using temp buffer | |
2101 | // to calculate destination buffer requirement | |
2102 | wchar_t tbuf[8]; | |
2103 | res = 0; | |
2104 | ||
2105 | do | |
2106 | { | |
2107 | bufPtr = tbuf; | |
2108 | outbuf = 8 * SIZEOF_WCHAR_T; | |
2109 | ||
2110 | cres = iconv(m2w, | |
2111 | ICONV_CHAR_CAST(&pszPtr), &inbuf, | |
2112 | (char**)&bufPtr, &outbuf ); | |
2113 | ||
2114 | res += 8 - (outbuf / SIZEOF_WCHAR_T); | |
2115 | } | |
2116 | while ((cres == (size_t)-1) && (errno == E2BIG)); | |
2117 | } | |
2118 | ||
2119 | if (ICONV_FAILED(cres, inbuf)) | |
2120 | { | |
2121 | //VS: it is ok if iconv fails, hence trace only | |
2122 | wxLogTrace(TRACE_STRCONV, wxT("iconv failed: %s"), wxSysErrorMsg(wxSysErrorCode())); | |
2123 | return wxCONV_FAILED; | |
2124 | } | |
2125 | ||
2126 | return res; | |
2127 | } | |
2128 | ||
2129 | size_t wxMBConv_iconv::WC2MB(char *buf, const wchar_t *psz, size_t n) const | |
2130 | { | |
2131 | #if wxUSE_THREADS | |
2132 | // NB: explained in MB2WC | |
2133 | wxMutexLocker lock(wxConstCast(this, wxMBConv_iconv)->m_iconvMutex); | |
2134 | #endif | |
2135 | ||
2136 | size_t inlen = wxWcslen(psz); | |
2137 | size_t inbuf = inlen * SIZEOF_WCHAR_T; | |
2138 | size_t outbuf = n; | |
2139 | size_t res, cres; | |
2140 | ||
2141 | wchar_t *tmpbuf = 0; | |
2142 | ||
2143 | if (ms_wcNeedsSwap) | |
2144 | { | |
2145 | // need to copy to temp buffer to switch endianness | |
2146 | // (doing WC_BSWAP twice on the original buffer won't help, as it | |
2147 | // could be in read-only memory, or be accessed in some other thread) | |
2148 | tmpbuf = (wchar_t *)malloc(inbuf + SIZEOF_WCHAR_T); | |
2149 | for ( size_t i = 0; i < inlen; i++ ) | |
2150 | tmpbuf[n] = WC_BSWAP(psz[i]); | |
2151 | ||
2152 | tmpbuf[inlen] = L'\0'; | |
2153 | psz = tmpbuf; | |
2154 | } | |
2155 | ||
2156 | if (buf) | |
2157 | { | |
2158 | // have destination buffer, convert there | |
2159 | cres = iconv( w2m, ICONV_CHAR_CAST(&psz), &inbuf, &buf, &outbuf ); | |
2160 | ||
2161 | res = n - outbuf; | |
2162 | ||
2163 | // NB: iconv was given only wcslen(psz) characters on input, and so | |
2164 | // it couldn't convert the trailing zero. Let's do it ourselves | |
2165 | // if there's some room left for it in the output buffer. | |
2166 | if (res < n) | |
2167 | buf[0] = 0; | |
2168 | } | |
2169 | else | |
2170 | { | |
2171 | // no destination buffer: convert using temp buffer | |
2172 | // to calculate destination buffer requirement | |
2173 | char tbuf[16]; | |
2174 | res = 0; | |
2175 | do | |
2176 | { | |
2177 | buf = tbuf; | |
2178 | outbuf = 16; | |
2179 | ||
2180 | cres = iconv( w2m, ICONV_CHAR_CAST(&psz), &inbuf, &buf, &outbuf ); | |
2181 | ||
2182 | res += 16 - outbuf; | |
2183 | } | |
2184 | while ((cres == (size_t)-1) && (errno == E2BIG)); | |
2185 | } | |
2186 | ||
2187 | if (ms_wcNeedsSwap) | |
2188 | { | |
2189 | free(tmpbuf); | |
2190 | } | |
2191 | ||
2192 | if (ICONV_FAILED(cres, inbuf)) | |
2193 | { | |
2194 | wxLogTrace(TRACE_STRCONV, wxT("iconv failed: %s"), wxSysErrorMsg(wxSysErrorCode())); | |
2195 | return wxCONV_FAILED; | |
2196 | } | |
2197 | ||
2198 | return res; | |
2199 | } | |
2200 | ||
2201 | size_t wxMBConv_iconv::GetMBNulLen() const | |
2202 | { | |
2203 | if ( m_minMBCharWidth == 0 ) | |
2204 | { | |
2205 | wxMBConv_iconv * const self = wxConstCast(this, wxMBConv_iconv); | |
2206 | ||
2207 | #if wxUSE_THREADS | |
2208 | // NB: explained in MB2WC | |
2209 | wxMutexLocker lock(self->m_iconvMutex); | |
2210 | #endif | |
2211 | ||
2212 | const wchar_t *wnul = L""; | |
2213 | char buf[8]; // should be enough for NUL in any encoding | |
2214 | size_t inLen = sizeof(wchar_t), | |
2215 | outLen = WXSIZEOF(buf); | |
2216 | char *inBuff = (char *)wnul; | |
2217 | char *outBuff = buf; | |
2218 | if ( iconv(w2m, ICONV_CHAR_CAST(&inBuff), &inLen, &outBuff, &outLen) == (size_t)-1 ) | |
2219 | { | |
2220 | self->m_minMBCharWidth = (size_t)-1; | |
2221 | } | |
2222 | else // ok | |
2223 | { | |
2224 | self->m_minMBCharWidth = outBuff - buf; | |
2225 | } | |
2226 | } | |
2227 | ||
2228 | return m_minMBCharWidth; | |
2229 | } | |
2230 | ||
2231 | #if wxUSE_UNICODE_UTF8 | |
2232 | bool wxMBConv_iconv::IsUTF8() const | |
2233 | { | |
2234 | return wxStricmp(m_name, "UTF-8") == 0 || | |
2235 | wxStricmp(m_name, "UTF8") == 0; | |
2236 | } | |
2237 | #endif | |
2238 | ||
2239 | #endif // HAVE_ICONV | |
2240 | ||
2241 | ||
2242 | // ============================================================================ | |
2243 | // Win32 conversion classes | |
2244 | // ============================================================================ | |
2245 | ||
2246 | #ifdef wxHAVE_WIN32_MB2WC | |
2247 | ||
2248 | // from utils.cpp | |
2249 | #if wxUSE_FONTMAP | |
2250 | extern WXDLLIMPEXP_BASE long wxCharsetToCodepage(const char *charset); | |
2251 | extern WXDLLIMPEXP_BASE long wxEncodingToCodepage(wxFontEncoding encoding); | |
2252 | #endif | |
2253 | ||
2254 | class wxMBConv_win32 : public wxMBConv | |
2255 | { | |
2256 | public: | |
2257 | wxMBConv_win32() | |
2258 | { | |
2259 | m_CodePage = CP_ACP; | |
2260 | m_minMBCharWidth = 0; | |
2261 | } | |
2262 | ||
2263 | wxMBConv_win32(const wxMBConv_win32& conv) | |
2264 | : wxMBConv() | |
2265 | { | |
2266 | m_CodePage = conv.m_CodePage; | |
2267 | m_minMBCharWidth = conv.m_minMBCharWidth; | |
2268 | } | |
2269 | ||
2270 | #if wxUSE_FONTMAP | |
2271 | wxMBConv_win32(const char* name) | |
2272 | { | |
2273 | m_CodePage = wxCharsetToCodepage(name); | |
2274 | m_minMBCharWidth = 0; | |
2275 | } | |
2276 | ||
2277 | wxMBConv_win32(wxFontEncoding encoding) | |
2278 | { | |
2279 | m_CodePage = wxEncodingToCodepage(encoding); | |
2280 | m_minMBCharWidth = 0; | |
2281 | } | |
2282 | #endif // wxUSE_FONTMAP | |
2283 | ||
2284 | virtual size_t MB2WC(wchar_t *buf, const char *psz, size_t n) const | |
2285 | { | |
2286 | // note that we have to use MB_ERR_INVALID_CHARS flag as it without it | |
2287 | // the behaviour is not compatible with the Unix version (using iconv) | |
2288 | // and break the library itself, e.g. wxTextInputStream::NextChar() | |
2289 | // wouldn't work if reading an incomplete MB char didn't result in an | |
2290 | // error | |
2291 | // | |
2292 | // Moreover, MB_ERR_INVALID_CHARS is only supported on Win 2K SP4 or | |
2293 | // Win XP or newer and it is not supported for UTF-[78] so we always | |
2294 | // use our own conversions in this case. See | |
2295 | // http://blogs.msdn.com/michkap/archive/2005/04/19/409566.aspx | |
2296 | // http://msdn.microsoft.com/library/en-us/intl/unicode_17si.asp | |
2297 | if ( m_CodePage == CP_UTF8 ) | |
2298 | { | |
2299 | return wxMBConvUTF8().MB2WC(buf, psz, n); | |
2300 | } | |
2301 | ||
2302 | if ( m_CodePage == CP_UTF7 ) | |
2303 | { | |
2304 | return wxMBConvUTF7().MB2WC(buf, psz, n); | |
2305 | } | |
2306 | ||
2307 | int flags = 0; | |
2308 | if ( (m_CodePage < 50000 && m_CodePage != CP_SYMBOL) && | |
2309 | IsAtLeastWin2kSP4() ) | |
2310 | { | |
2311 | flags = MB_ERR_INVALID_CHARS; | |
2312 | } | |
2313 | ||
2314 | const size_t len = ::MultiByteToWideChar | |
2315 | ( | |
2316 | m_CodePage, // code page | |
2317 | flags, // flags: fall on error | |
2318 | psz, // input string | |
2319 | -1, // its length (NUL-terminated) | |
2320 | buf, // output string | |
2321 | buf ? n : 0 // size of output buffer | |
2322 | ); | |
2323 | if ( !len ) | |
2324 | { | |
2325 | // function totally failed | |
2326 | return wxCONV_FAILED; | |
2327 | } | |
2328 | ||
2329 | // if we were really converting and didn't use MB_ERR_INVALID_CHARS, | |
2330 | // check if we succeeded, by doing a double trip: | |
2331 | if ( !flags && buf ) | |
2332 | { | |
2333 | const size_t mbLen = strlen(psz); | |
2334 | wxCharBuffer mbBuf(mbLen); | |
2335 | if ( ::WideCharToMultiByte | |
2336 | ( | |
2337 | m_CodePage, | |
2338 | 0, | |
2339 | buf, | |
2340 | -1, | |
2341 | mbBuf.data(), | |
2342 | mbLen + 1, // size in bytes, not length | |
2343 | NULL, | |
2344 | NULL | |
2345 | ) == 0 || | |
2346 | strcmp(mbBuf, psz) != 0 ) | |
2347 | { | |
2348 | // we didn't obtain the same thing we started from, hence | |
2349 | // the conversion was lossy and we consider that it failed | |
2350 | return wxCONV_FAILED; | |
2351 | } | |
2352 | } | |
2353 | ||
2354 | // note that it returns count of written chars for buf != NULL and size | |
2355 | // of the needed buffer for buf == NULL so in either case the length of | |
2356 | // the string (which never includes the terminating NUL) is one less | |
2357 | return len - 1; | |
2358 | } | |
2359 | ||
2360 | virtual size_t WC2MB(char *buf, const wchar_t *pwz, size_t n) const | |
2361 | { | |
2362 | /* | |
2363 | we have a problem here: by default, WideCharToMultiByte() may | |
2364 | replace characters unrepresentable in the target code page with bad | |
2365 | quality approximations such as turning "1/2" symbol (U+00BD) into | |
2366 | "1" for the code pages which don't have it and we, obviously, want | |
2367 | to avoid this at any price | |
2368 | ||
2369 | the trouble is that this function does it _silently_, i.e. it won't | |
2370 | even tell us whether it did or not... Win98/2000 and higher provide | |
2371 | WC_NO_BEST_FIT_CHARS but it doesn't work for the older systems and | |
2372 | we have to resort to a round trip, i.e. check that converting back | |
2373 | results in the same string -- this is, of course, expensive but | |
2374 | otherwise we simply can't be sure to not garble the data. | |
2375 | */ | |
2376 | ||
2377 | // determine if we can rely on WC_NO_BEST_FIT_CHARS: according to MSDN | |
2378 | // it doesn't work with CJK encodings (which we test for rather roughly | |
2379 | // here...) nor with UTF-7/8 nor, of course, with Windows versions not | |
2380 | // supporting it | |
2381 | BOOL usedDef wxDUMMY_INITIALIZE(false); | |
2382 | BOOL *pUsedDef; | |
2383 | int flags; | |
2384 | if ( CanUseNoBestFit() && m_CodePage < 50000 ) | |
2385 | { | |
2386 | // it's our lucky day | |
2387 | flags = WC_NO_BEST_FIT_CHARS; | |
2388 | pUsedDef = &usedDef; | |
2389 | } | |
2390 | else // old system or unsupported encoding | |
2391 | { | |
2392 | flags = 0; | |
2393 | pUsedDef = NULL; | |
2394 | } | |
2395 | ||
2396 | const size_t len = ::WideCharToMultiByte | |
2397 | ( | |
2398 | m_CodePage, // code page | |
2399 | flags, // either none or no best fit | |
2400 | pwz, // input string | |
2401 | -1, // it is (wide) NUL-terminated | |
2402 | buf, // output buffer | |
2403 | buf ? n : 0, // and its size | |
2404 | NULL, // default "replacement" char | |
2405 | pUsedDef // [out] was it used? | |
2406 | ); | |
2407 | ||
2408 | if ( !len ) | |
2409 | { | |
2410 | // function totally failed | |
2411 | return wxCONV_FAILED; | |
2412 | } | |
2413 | ||
2414 | // if we were really converting, check if we succeeded | |
2415 | if ( buf ) | |
2416 | { | |
2417 | if ( flags ) | |
2418 | { | |
2419 | // check if the conversion failed, i.e. if any replacements | |
2420 | // were done | |
2421 | if ( usedDef ) | |
2422 | return wxCONV_FAILED; | |
2423 | } | |
2424 | else // we must resort to double tripping... | |
2425 | { | |
2426 | wxWCharBuffer wcBuf(n); | |
2427 | if ( MB2WC(wcBuf.data(), buf, n) == wxCONV_FAILED || | |
2428 | wcscmp(wcBuf, pwz) != 0 ) | |
2429 | { | |
2430 | // we didn't obtain the same thing we started from, hence | |
2431 | // the conversion was lossy and we consider that it failed | |
2432 | return wxCONV_FAILED; | |
2433 | } | |
2434 | } | |
2435 | } | |
2436 | ||
2437 | // see the comment above for the reason of "len - 1" | |
2438 | return len - 1; | |
2439 | } | |
2440 | ||
2441 | virtual size_t GetMBNulLen() const | |
2442 | { | |
2443 | if ( m_minMBCharWidth == 0 ) | |
2444 | { | |
2445 | int len = ::WideCharToMultiByte | |
2446 | ( | |
2447 | m_CodePage, // code page | |
2448 | 0, // no flags | |
2449 | L"", // input string | |
2450 | 1, // translate just the NUL | |
2451 | NULL, // output buffer | |
2452 | 0, // and its size | |
2453 | NULL, // no replacement char | |
2454 | NULL // [out] don't care if it was used | |
2455 | ); | |
2456 | ||
2457 | wxMBConv_win32 * const self = wxConstCast(this, wxMBConv_win32); | |
2458 | switch ( len ) | |
2459 | { | |
2460 | default: | |
2461 | wxLogDebug(_T("Unexpected NUL length %d"), len); | |
2462 | self->m_minMBCharWidth = (size_t)-1; | |
2463 | break; | |
2464 | ||
2465 | case 0: | |
2466 | self->m_minMBCharWidth = (size_t)-1; | |
2467 | break; | |
2468 | ||
2469 | case 1: | |
2470 | case 2: | |
2471 | case 4: | |
2472 | self->m_minMBCharWidth = len; | |
2473 | break; | |
2474 | } | |
2475 | } | |
2476 | ||
2477 | return m_minMBCharWidth; | |
2478 | } | |
2479 | ||
2480 | virtual wxMBConv *Clone() const { return new wxMBConv_win32(*this); } | |
2481 | ||
2482 | bool IsOk() const { return m_CodePage != -1; } | |
2483 | ||
2484 | private: | |
2485 | static bool CanUseNoBestFit() | |
2486 | { | |
2487 | static int s_isWin98Or2k = -1; | |
2488 | ||
2489 | if ( s_isWin98Or2k == -1 ) | |
2490 | { | |
2491 | int verMaj, verMin; | |
2492 | switch ( wxGetOsVersion(&verMaj, &verMin) ) | |
2493 | { | |
2494 | case wxOS_WINDOWS_9X: | |
2495 | s_isWin98Or2k = verMaj >= 4 && verMin >= 10; | |
2496 | break; | |
2497 | ||
2498 | case wxOS_WINDOWS_NT: | |
2499 | s_isWin98Or2k = verMaj >= 5; | |
2500 | break; | |
2501 | ||
2502 | default: | |
2503 | // unknown: be conservative by default | |
2504 | s_isWin98Or2k = 0; | |
2505 | break; | |
2506 | } | |
2507 | ||
2508 | wxASSERT_MSG( s_isWin98Or2k != -1, _T("should be set above") ); | |
2509 | } | |
2510 | ||
2511 | return s_isWin98Or2k == 1; | |
2512 | } | |
2513 | ||
2514 | static bool IsAtLeastWin2kSP4() | |
2515 | { | |
2516 | #ifdef __WXWINCE__ | |
2517 | return false; | |
2518 | #else | |
2519 | static int s_isAtLeastWin2kSP4 = -1; | |
2520 | ||
2521 | if ( s_isAtLeastWin2kSP4 == -1 ) | |
2522 | { | |
2523 | OSVERSIONINFOEX ver; | |
2524 | ||
2525 | memset(&ver, 0, sizeof(ver)); | |
2526 | ver.dwOSVersionInfoSize = sizeof(ver); | |
2527 | GetVersionEx((OSVERSIONINFO*)&ver); | |
2528 | ||
2529 | s_isAtLeastWin2kSP4 = | |
2530 | ((ver.dwMajorVersion > 5) || // Vista+ | |
2531 | (ver.dwMajorVersion == 5 && ver.dwMinorVersion > 0) || // XP/2003 | |
2532 | (ver.dwMajorVersion == 5 && ver.dwMinorVersion == 0 && | |
2533 | ver.wServicePackMajor >= 4)) // 2000 SP4+ | |
2534 | ? 1 : 0; | |
2535 | } | |
2536 | ||
2537 | return s_isAtLeastWin2kSP4 == 1; | |
2538 | #endif | |
2539 | } | |
2540 | ||
2541 | ||
2542 | // the code page we're working with | |
2543 | long m_CodePage; | |
2544 | ||
2545 | // cached result of GetMBNulLen(), set to 0 initially meaning | |
2546 | // "unknown" | |
2547 | size_t m_minMBCharWidth; | |
2548 | }; | |
2549 | ||
2550 | #endif // wxHAVE_WIN32_MB2WC | |
2551 | ||
2552 | ||
2553 | // ============================================================================ | |
2554 | // wxEncodingConverter based conversion classes | |
2555 | // ============================================================================ | |
2556 | ||
2557 | #if wxUSE_FONTMAP | |
2558 | ||
2559 | class wxMBConv_wxwin : public wxMBConv | |
2560 | { | |
2561 | private: | |
2562 | void Init() | |
2563 | { | |
2564 | // Refuse to use broken wxEncodingConverter code for Mac-specific encodings. | |
2565 | // The wxMBConv_cf class does a better job. | |
2566 | m_ok = (m_enc < wxFONTENCODING_MACMIN || m_enc > wxFONTENCODING_MACMAX) && | |
2567 | m2w.Init(m_enc, wxFONTENCODING_UNICODE) && | |
2568 | w2m.Init(wxFONTENCODING_UNICODE, m_enc); | |
2569 | } | |
2570 | ||
2571 | public: | |
2572 | // temporarily just use wxEncodingConverter stuff, | |
2573 | // so that it works while a better implementation is built | |
2574 | wxMBConv_wxwin(const char* name) | |
2575 | { | |
2576 | if (name) | |
2577 | m_enc = wxFontMapperBase::Get()->CharsetToEncoding(name, false); | |
2578 | else | |
2579 | m_enc = wxFONTENCODING_SYSTEM; | |
2580 | ||
2581 | Init(); | |
2582 | } | |
2583 | ||
2584 | wxMBConv_wxwin(wxFontEncoding enc) | |
2585 | { | |
2586 | m_enc = enc; | |
2587 | ||
2588 | Init(); | |
2589 | } | |
2590 | ||
2591 | size_t MB2WC(wchar_t *buf, const char *psz, size_t WXUNUSED(n)) const | |
2592 | { | |
2593 | size_t inbuf = strlen(psz); | |
2594 | if (buf) | |
2595 | { | |
2596 | if (!m2w.Convert(psz, buf)) | |
2597 | return wxCONV_FAILED; | |
2598 | } | |
2599 | return inbuf; | |
2600 | } | |
2601 | ||
2602 | size_t WC2MB(char *buf, const wchar_t *psz, size_t WXUNUSED(n)) const | |
2603 | { | |
2604 | const size_t inbuf = wxWcslen(psz); | |
2605 | if (buf) | |
2606 | { | |
2607 | if (!w2m.Convert(psz, buf)) | |
2608 | return wxCONV_FAILED; | |
2609 | } | |
2610 | ||
2611 | return inbuf; | |
2612 | } | |
2613 | ||
2614 | virtual size_t GetMBNulLen() const | |
2615 | { | |
2616 | switch ( m_enc ) | |
2617 | { | |
2618 | case wxFONTENCODING_UTF16BE: | |
2619 | case wxFONTENCODING_UTF16LE: | |
2620 | return 2; | |
2621 | ||
2622 | case wxFONTENCODING_UTF32BE: | |
2623 | case wxFONTENCODING_UTF32LE: | |
2624 | return 4; | |
2625 | ||
2626 | default: | |
2627 | return 1; | |
2628 | } | |
2629 | } | |
2630 | ||
2631 | virtual wxMBConv *Clone() const { return new wxMBConv_wxwin(m_enc); } | |
2632 | ||
2633 | bool IsOk() const { return m_ok; } | |
2634 | ||
2635 | public: | |
2636 | wxFontEncoding m_enc; | |
2637 | wxEncodingConverter m2w, w2m; | |
2638 | ||
2639 | private: | |
2640 | // were we initialized successfully? | |
2641 | bool m_ok; | |
2642 | ||
2643 | DECLARE_NO_COPY_CLASS(wxMBConv_wxwin) | |
2644 | }; | |
2645 | ||
2646 | // make the constructors available for unit testing | |
2647 | WXDLLIMPEXP_BASE wxMBConv* new_wxMBConv_wxwin( const char* name ) | |
2648 | { | |
2649 | wxMBConv_wxwin* result = new wxMBConv_wxwin( name ); | |
2650 | if ( !result->IsOk() ) | |
2651 | { | |
2652 | delete result; | |
2653 | return 0; | |
2654 | } | |
2655 | ||
2656 | return result; | |
2657 | } | |
2658 | ||
2659 | #endif // wxUSE_FONTMAP | |
2660 | ||
2661 | // ============================================================================ | |
2662 | // wxCSConv implementation | |
2663 | // ============================================================================ | |
2664 | ||
2665 | void wxCSConv::Init() | |
2666 | { | |
2667 | m_name = NULL; | |
2668 | m_convReal = NULL; | |
2669 | m_deferred = true; | |
2670 | } | |
2671 | ||
2672 | wxCSConv::wxCSConv(const wxString& charset) | |
2673 | { | |
2674 | Init(); | |
2675 | ||
2676 | if ( !charset.empty() ) | |
2677 | { | |
2678 | SetName(charset.ToAscii()); | |
2679 | } | |
2680 | ||
2681 | #if wxUSE_FONTMAP | |
2682 | m_encoding = wxFontMapperBase::GetEncodingFromName(charset); | |
2683 | #else | |
2684 | m_encoding = wxFONTENCODING_SYSTEM; | |
2685 | #endif | |
2686 | } | |
2687 | ||
2688 | wxCSConv::wxCSConv(wxFontEncoding encoding) | |
2689 | { | |
2690 | if ( encoding == wxFONTENCODING_MAX || encoding == wxFONTENCODING_DEFAULT ) | |
2691 | { | |
2692 | wxFAIL_MSG( _T("invalid encoding value in wxCSConv ctor") ); | |
2693 | ||
2694 | encoding = wxFONTENCODING_SYSTEM; | |
2695 | } | |
2696 | ||
2697 | Init(); | |
2698 | ||
2699 | m_encoding = encoding; | |
2700 | } | |
2701 | ||
2702 | wxCSConv::~wxCSConv() | |
2703 | { | |
2704 | Clear(); | |
2705 | } | |
2706 | ||
2707 | wxCSConv::wxCSConv(const wxCSConv& conv) | |
2708 | : wxMBConv() | |
2709 | { | |
2710 | Init(); | |
2711 | ||
2712 | SetName(conv.m_name); | |
2713 | m_encoding = conv.m_encoding; | |
2714 | } | |
2715 | ||
2716 | wxCSConv& wxCSConv::operator=(const wxCSConv& conv) | |
2717 | { | |
2718 | Clear(); | |
2719 | ||
2720 | SetName(conv.m_name); | |
2721 | m_encoding = conv.m_encoding; | |
2722 | ||
2723 | return *this; | |
2724 | } | |
2725 | ||
2726 | void wxCSConv::Clear() | |
2727 | { | |
2728 | free(m_name); | |
2729 | delete m_convReal; | |
2730 | ||
2731 | m_name = NULL; | |
2732 | m_convReal = NULL; | |
2733 | } | |
2734 | ||
2735 | void wxCSConv::SetName(const char *charset) | |
2736 | { | |
2737 | if (charset) | |
2738 | { | |
2739 | m_name = wxStrdup(charset); | |
2740 | m_deferred = true; | |
2741 | } | |
2742 | } | |
2743 | ||
2744 | #if wxUSE_FONTMAP | |
2745 | ||
2746 | WX_DECLARE_HASH_MAP( wxFontEncoding, wxString, wxIntegerHash, wxIntegerEqual, | |
2747 | wxEncodingNameCache ); | |
2748 | ||
2749 | static wxEncodingNameCache gs_nameCache; | |
2750 | #endif | |
2751 | ||
2752 | wxMBConv *wxCSConv::DoCreate() const | |
2753 | { | |
2754 | #if wxUSE_FONTMAP | |
2755 | wxLogTrace(TRACE_STRCONV, | |
2756 | wxT("creating conversion for %s"), | |
2757 | (m_name ? m_name | |
2758 | : (const char*)wxFontMapperBase::GetEncodingName(m_encoding).mb_str())); | |
2759 | #endif // wxUSE_FONTMAP | |
2760 | ||
2761 | // check for the special case of ASCII or ISO8859-1 charset: as we have | |
2762 | // special knowledge of it anyhow, we don't need to create a special | |
2763 | // conversion object | |
2764 | if ( m_encoding == wxFONTENCODING_ISO8859_1 || | |
2765 | m_encoding == wxFONTENCODING_DEFAULT ) | |
2766 | { | |
2767 | // don't convert at all | |
2768 | return NULL; | |
2769 | } | |
2770 | ||
2771 | // we trust OS to do conversion better than we can so try external | |
2772 | // conversion methods first | |
2773 | // | |
2774 | // the full order is: | |
2775 | // 1. OS conversion (iconv() under Unix or Win32 API) | |
2776 | // 2. hard coded conversions for UTF | |
2777 | // 3. wxEncodingConverter as fall back | |
2778 | ||
2779 | // step (1) | |
2780 | #ifdef HAVE_ICONV | |
2781 | #if !wxUSE_FONTMAP | |
2782 | if ( m_name ) | |
2783 | #endif // !wxUSE_FONTMAP | |
2784 | { | |
2785 | #if wxUSE_FONTMAP | |
2786 | wxFontEncoding encoding(m_encoding); | |
2787 | #endif | |
2788 | ||
2789 | if ( m_name ) | |
2790 | { | |
2791 | wxMBConv_iconv *conv = new wxMBConv_iconv(m_name); | |
2792 | if ( conv->IsOk() ) | |
2793 | return conv; | |
2794 | ||
2795 | delete conv; | |
2796 | ||
2797 | #if wxUSE_FONTMAP | |
2798 | encoding = | |
2799 | wxFontMapperBase::Get()->CharsetToEncoding(m_name, false); | |
2800 | #endif // wxUSE_FONTMAP | |
2801 | } | |
2802 | #if wxUSE_FONTMAP | |
2803 | { | |
2804 | const wxEncodingNameCache::iterator it = gs_nameCache.find(encoding); | |
2805 | if ( it != gs_nameCache.end() ) | |
2806 | { | |
2807 | if ( it->second.empty() ) | |
2808 | return NULL; | |
2809 | ||
2810 | wxMBConv_iconv *conv = new wxMBConv_iconv(it->second.ToAscii()); | |
2811 | if ( conv->IsOk() ) | |
2812 | return conv; | |
2813 | ||
2814 | delete conv; | |
2815 | } | |
2816 | ||
2817 | const wxChar** names = wxFontMapperBase::GetAllEncodingNames(encoding); | |
2818 | // CS : in case this does not return valid names (eg for MacRoman) | |
2819 | // encoding got a 'failure' entry in the cache all the same, | |
2820 | // although it just has to be created using a different method, so | |
2821 | // only store failed iconv creation attempts (or perhaps we | |
2822 | // shoulnd't do this at all ?) | |
2823 | if ( names[0] != NULL ) | |
2824 | { | |
2825 | for ( ; *names; ++names ) | |
2826 | { | |
2827 | // FIXME-UTF8: wxFontMapperBase::GetAllEncodingNames() | |
2828 | // will need changes that will obsolete this | |
2829 | wxString name(*names); | |
2830 | wxMBConv_iconv *conv = new wxMBConv_iconv(name.ToAscii()); | |
2831 | if ( conv->IsOk() ) | |
2832 | { | |
2833 | gs_nameCache[encoding] = *names; | |
2834 | return conv; | |
2835 | } | |
2836 | ||
2837 | delete conv; | |
2838 | } | |
2839 | ||
2840 | gs_nameCache[encoding] = _T(""); // cache the failure | |
2841 | } | |
2842 | } | |
2843 | #endif // wxUSE_FONTMAP | |
2844 | } | |
2845 | #endif // HAVE_ICONV | |
2846 | ||
2847 | #ifdef wxHAVE_WIN32_MB2WC | |
2848 | { | |
2849 | #if wxUSE_FONTMAP | |
2850 | wxMBConv_win32 *conv = m_name ? new wxMBConv_win32(m_name) | |
2851 | : new wxMBConv_win32(m_encoding); | |
2852 | if ( conv->IsOk() ) | |
2853 | return conv; | |
2854 | ||
2855 | delete conv; | |
2856 | #else | |
2857 | return NULL; | |
2858 | #endif | |
2859 | } | |
2860 | #endif // wxHAVE_WIN32_MB2WC | |
2861 | ||
2862 | #ifdef __DARWIN__ | |
2863 | { | |
2864 | // leave UTF16 and UTF32 to the built-ins of wx | |
2865 | if ( m_name || ( m_encoding < wxFONTENCODING_UTF16BE || | |
2866 | ( m_encoding >= wxFONTENCODING_MACMIN && m_encoding <= wxFONTENCODING_MACMAX ) ) ) | |
2867 | { | |
2868 | #if wxUSE_FONTMAP | |
2869 | wxMBConv_cf *conv = m_name ? new wxMBConv_cf(m_name) | |
2870 | : new wxMBConv_cf(m_encoding); | |
2871 | #else | |
2872 | wxMBConv_cf *conv = new wxMBConv_cf(m_encoding); | |
2873 | #endif | |
2874 | ||
2875 | if ( conv->IsOk() ) | |
2876 | return conv; | |
2877 | ||
2878 | delete conv; | |
2879 | } | |
2880 | } | |
2881 | #endif // __DARWIN__ | |
2882 | ||
2883 | // step (2) | |
2884 | wxFontEncoding enc = m_encoding; | |
2885 | #if wxUSE_FONTMAP | |
2886 | if ( enc == wxFONTENCODING_SYSTEM && m_name ) | |
2887 | { | |
2888 | // use "false" to suppress interactive dialogs -- we can be called from | |
2889 | // anywhere and popping up a dialog from here is the last thing we want to | |
2890 | // do | |
2891 | enc = wxFontMapperBase::Get()->CharsetToEncoding(m_name, false); | |
2892 | } | |
2893 | #endif // wxUSE_FONTMAP | |
2894 | ||
2895 | switch ( enc ) | |
2896 | { | |
2897 | case wxFONTENCODING_UTF7: | |
2898 | return new wxMBConvUTF7; | |
2899 | ||
2900 | case wxFONTENCODING_UTF8: | |
2901 | return new wxMBConvUTF8; | |
2902 | ||
2903 | case wxFONTENCODING_UTF16BE: | |
2904 | return new wxMBConvUTF16BE; | |
2905 | ||
2906 | case wxFONTENCODING_UTF16LE: | |
2907 | return new wxMBConvUTF16LE; | |
2908 | ||
2909 | case wxFONTENCODING_UTF32BE: | |
2910 | return new wxMBConvUTF32BE; | |
2911 | ||
2912 | case wxFONTENCODING_UTF32LE: | |
2913 | return new wxMBConvUTF32LE; | |
2914 | ||
2915 | default: | |
2916 | // nothing to do but put here to suppress gcc warnings | |
2917 | break; | |
2918 | } | |
2919 | ||
2920 | // step (3) | |
2921 | #if wxUSE_FONTMAP | |
2922 | { | |
2923 | wxMBConv_wxwin *conv = m_name ? new wxMBConv_wxwin(m_name) | |
2924 | : new wxMBConv_wxwin(m_encoding); | |
2925 | if ( conv->IsOk() ) | |
2926 | return conv; | |
2927 | ||
2928 | delete conv; | |
2929 | } | |
2930 | #endif // wxUSE_FONTMAP | |
2931 | ||
2932 | // NB: This is a hack to prevent deadlock. What could otherwise happen | |
2933 | // in Unicode build: wxConvLocal creation ends up being here | |
2934 | // because of some failure and logs the error. But wxLog will try to | |
2935 | // attach a timestamp, for which it will need wxConvLocal (to convert | |
2936 | // time to char* and then wchar_t*), but that fails, tries to log the | |
2937 | // error, but wxLog has an (already locked) critical section that | |
2938 | // guards the static buffer. | |
2939 | static bool alreadyLoggingError = false; | |
2940 | if (!alreadyLoggingError) | |
2941 | { | |
2942 | alreadyLoggingError = true; | |
2943 | wxLogError(_("Cannot convert from the charset '%s'!"), | |
2944 | m_name ? m_name | |
2945 | : | |
2946 | #if wxUSE_FONTMAP | |
2947 | (const char*)wxFontMapperBase::GetEncodingDescription(m_encoding).ToAscii() | |
2948 | #else // !wxUSE_FONTMAP | |
2949 | (const char*)wxString::Format(_("encoding %i"), m_encoding).ToAscii() | |
2950 | #endif // wxUSE_FONTMAP/!wxUSE_FONTMAP | |
2951 | ); | |
2952 | ||
2953 | alreadyLoggingError = false; | |
2954 | } | |
2955 | ||
2956 | return NULL; | |
2957 | } | |
2958 | ||
2959 | void wxCSConv::CreateConvIfNeeded() const | |
2960 | { | |
2961 | if ( m_deferred ) | |
2962 | { | |
2963 | wxCSConv *self = (wxCSConv *)this; // const_cast | |
2964 | ||
2965 | // if we don't have neither the name nor the encoding, use the default | |
2966 | // encoding for this system | |
2967 | if ( !m_name && m_encoding == wxFONTENCODING_SYSTEM ) | |
2968 | { | |
2969 | #if wxUSE_INTL | |
2970 | self->m_encoding = wxLocale::GetSystemEncoding(); | |
2971 | #else | |
2972 | // fallback to some reasonable default: | |
2973 | self->m_encoding = wxFONTENCODING_ISO8859_1; | |
2974 | #endif // wxUSE_INTL | |
2975 | } | |
2976 | ||
2977 | self->m_convReal = DoCreate(); | |
2978 | self->m_deferred = false; | |
2979 | } | |
2980 | } | |
2981 | ||
2982 | bool wxCSConv::IsOk() const | |
2983 | { | |
2984 | CreateConvIfNeeded(); | |
2985 | ||
2986 | // special case: no convReal created for wxFONTENCODING_ISO8859_1 | |
2987 | if ( m_encoding == wxFONTENCODING_ISO8859_1 ) | |
2988 | return true; // always ok as we do it ourselves | |
2989 | ||
2990 | // m_convReal->IsOk() is called at its own creation, so we know it must | |
2991 | // be ok if m_convReal is non-NULL | |
2992 | return m_convReal != NULL; | |
2993 | } | |
2994 | ||
2995 | size_t wxCSConv::ToWChar(wchar_t *dst, size_t dstLen, | |
2996 | const char *src, size_t srcLen) const | |
2997 | { | |
2998 | CreateConvIfNeeded(); | |
2999 | ||
3000 | if (m_convReal) | |
3001 | return m_convReal->ToWChar(dst, dstLen, src, srcLen); | |
3002 | ||
3003 | // latin-1 (direct) | |
3004 | return wxMBConv::ToWChar(dst, dstLen, src, srcLen); | |
3005 | } | |
3006 | ||
3007 | size_t wxCSConv::FromWChar(char *dst, size_t dstLen, | |
3008 | const wchar_t *src, size_t srcLen) const | |
3009 | { | |
3010 | CreateConvIfNeeded(); | |
3011 | ||
3012 | if (m_convReal) | |
3013 | return m_convReal->FromWChar(dst, dstLen, src, srcLen); | |
3014 | ||
3015 | // latin-1 (direct) | |
3016 | return wxMBConv::FromWChar(dst, dstLen, src, srcLen); | |
3017 | } | |
3018 | ||
3019 | size_t wxCSConv::MB2WC(wchar_t *buf, const char *psz, size_t n) const | |
3020 | { | |
3021 | CreateConvIfNeeded(); | |
3022 | ||
3023 | if (m_convReal) | |
3024 | return m_convReal->MB2WC(buf, psz, n); | |
3025 | ||
3026 | // latin-1 (direct) | |
3027 | size_t len = strlen(psz); | |
3028 | ||
3029 | if (buf) | |
3030 | { | |
3031 | for (size_t c = 0; c <= len; c++) | |
3032 | buf[c] = (unsigned char)(psz[c]); | |
3033 | } | |
3034 | ||
3035 | return len; | |
3036 | } | |
3037 | ||
3038 | size_t wxCSConv::WC2MB(char *buf, const wchar_t *psz, size_t n) const | |
3039 | { | |
3040 | CreateConvIfNeeded(); | |
3041 | ||
3042 | if (m_convReal) | |
3043 | return m_convReal->WC2MB(buf, psz, n); | |
3044 | ||
3045 | // latin-1 (direct) | |
3046 | const size_t len = wxWcslen(psz); | |
3047 | if (buf) | |
3048 | { | |
3049 | for (size_t c = 0; c <= len; c++) | |
3050 | { | |
3051 | if (psz[c] > 0xFF) | |
3052 | return wxCONV_FAILED; | |
3053 | ||
3054 | buf[c] = (char)psz[c]; | |
3055 | } | |
3056 | } | |
3057 | else | |
3058 | { | |
3059 | for (size_t c = 0; c <= len; c++) | |
3060 | { | |
3061 | if (psz[c] > 0xFF) | |
3062 | return wxCONV_FAILED; | |
3063 | } | |
3064 | } | |
3065 | ||
3066 | return len; | |
3067 | } | |
3068 | ||
3069 | size_t wxCSConv::GetMBNulLen() const | |
3070 | { | |
3071 | CreateConvIfNeeded(); | |
3072 | ||
3073 | if ( m_convReal ) | |
3074 | { | |
3075 | return m_convReal->GetMBNulLen(); | |
3076 | } | |
3077 | ||
3078 | // otherwise, we are ISO-8859-1 | |
3079 | return 1; | |
3080 | } | |
3081 | ||
3082 | #if wxUSE_UNICODE_UTF8 | |
3083 | bool wxCSConv::IsUTF8() const | |
3084 | { | |
3085 | CreateConvIfNeeded(); | |
3086 | ||
3087 | if ( m_convReal ) | |
3088 | { | |
3089 | return m_convReal->IsUTF8(); | |
3090 | } | |
3091 | ||
3092 | // otherwise, we are ISO-8859-1 | |
3093 | return false; | |
3094 | } | |
3095 | #endif | |
3096 | ||
3097 | ||
3098 | #if wxUSE_UNICODE | |
3099 | ||
3100 | wxWCharBuffer wxSafeConvertMB2WX(const char *s) | |
3101 | { | |
3102 | if ( !s ) | |
3103 | return wxWCharBuffer(); | |
3104 | ||
3105 | wxWCharBuffer wbuf(wxConvLibc.cMB2WX(s)); | |
3106 | if ( !wbuf ) | |
3107 | wbuf = wxMBConvUTF8().cMB2WX(s); | |
3108 | if ( !wbuf ) | |
3109 | wbuf = wxConvISO8859_1.cMB2WX(s); | |
3110 | ||
3111 | return wbuf; | |
3112 | } | |
3113 | ||
3114 | wxCharBuffer wxSafeConvertWX2MB(const wchar_t *ws) | |
3115 | { | |
3116 | if ( !ws ) | |
3117 | return wxCharBuffer(); | |
3118 | ||
3119 | wxCharBuffer buf(wxConvLibc.cWX2MB(ws)); | |
3120 | if ( !buf ) | |
3121 | buf = wxMBConvUTF8(wxMBConvUTF8::MAP_INVALID_UTF8_TO_OCTAL).cWX2MB(ws); | |
3122 | ||
3123 | return buf; | |
3124 | } | |
3125 | ||
3126 | #endif // wxUSE_UNICODE | |
3127 | ||
3128 | // ---------------------------------------------------------------------------- | |
3129 | // globals | |
3130 | // ---------------------------------------------------------------------------- | |
3131 | ||
3132 | // NB: The reason why we create converted objects in this convoluted way, | |
3133 | // using a factory function instead of global variable, is that they | |
3134 | // may be used at static initialization time (some of them are used by | |
3135 | // wxString ctors and there may be a global wxString object). In other | |
3136 | // words, possibly _before_ the converter global object would be | |
3137 | // initialized. | |
3138 | ||
3139 | #undef wxConvLibc | |
3140 | #undef wxConvUTF8 | |
3141 | #undef wxConvUTF7 | |
3142 | #undef wxConvLocal | |
3143 | #undef wxConvISO8859_1 | |
3144 | ||
3145 | #define WX_DEFINE_GLOBAL_CONV2(klass, impl_klass, name, ctor_args) \ | |
3146 | WXDLLIMPEXP_DATA_BASE(klass*) name##Ptr = NULL; \ | |
3147 | WXDLLIMPEXP_BASE klass* wxGet_##name##Ptr() \ | |
3148 | { \ | |
3149 | static impl_klass name##Obj ctor_args; \ | |
3150 | return &name##Obj; \ | |
3151 | } \ | |
3152 | /* this ensures that all global converter objects are created */ \ | |
3153 | /* by the time static initialization is done, i.e. before any */ \ | |
3154 | /* thread is launched: */ \ | |
3155 | static klass* gs_##name##instance = wxGet_##name##Ptr() | |
3156 | ||
3157 | #define WX_DEFINE_GLOBAL_CONV(klass, name, ctor_args) \ | |
3158 | WX_DEFINE_GLOBAL_CONV2(klass, klass, name, ctor_args) | |
3159 | ||
3160 | #ifdef __WINDOWS__ | |
3161 | WX_DEFINE_GLOBAL_CONV2(wxMBConv, wxMBConv_win32, wxConvLibc, wxEMPTY_PARAMETER_VALUE); | |
3162 | #else | |
3163 | WX_DEFINE_GLOBAL_CONV2(wxMBConv, wxMBConvLibc, wxConvLibc, wxEMPTY_PARAMETER_VALUE); | |
3164 | #endif | |
3165 | ||
3166 | WX_DEFINE_GLOBAL_CONV(wxMBConvStrictUTF8, wxConvUTF8, wxEMPTY_PARAMETER_VALUE); | |
3167 | WX_DEFINE_GLOBAL_CONV(wxMBConvUTF7, wxConvUTF7, wxEMPTY_PARAMETER_VALUE); | |
3168 | ||
3169 | WX_DEFINE_GLOBAL_CONV(wxCSConv, wxConvLocal, (wxFONTENCODING_SYSTEM)); | |
3170 | WX_DEFINE_GLOBAL_CONV(wxCSConv, wxConvISO8859_1, (wxFONTENCODING_ISO8859_1)); | |
3171 | ||
3172 | WXDLLIMPEXP_DATA_BASE(wxMBConv *) wxConvCurrent = wxGet_wxConvLibcPtr(); | |
3173 | WXDLLIMPEXP_DATA_BASE(wxMBConv *) wxConvUI = wxGet_wxConvLocalPtr(); | |
3174 | ||
3175 | #ifdef __DARWIN__ | |
3176 | // The xnu kernel always communicates file paths in decomposed UTF-8. | |
3177 | // WARNING: Are we sure that CFString's conversion will cause decomposition? | |
3178 | static wxMBConv_cf wxConvMacUTF8DObj(wxFONTENCODING_UTF8); | |
3179 | #endif | |
3180 | ||
3181 | WXDLLIMPEXP_DATA_BASE(wxMBConv *) wxConvFileName = | |
3182 | #ifdef __DARWIN__ | |
3183 | &wxConvMacUTF8DObj; | |
3184 | #else // !__DARWIN__ | |
3185 | wxGet_wxConvLibcPtr(); | |
3186 | #endif // __DARWIN__/!__DARWIN__ | |
3187 | ||
3188 | #else // !wxUSE_WCHAR_T | |
3189 | ||
3190 | // FIXME-UTF8: remove this, wxUSE_WCHAR_T is required now | |
3191 | // stand-ins in absence of wchar_t | |
3192 | WXDLLIMPEXP_DATA_BASE(wxMBConv) wxConvLibc, | |
3193 | wxConvISO8859_1, | |
3194 | wxConvLocal, | |
3195 | wxConvUTF8; | |
3196 | ||
3197 | #endif // wxUSE_WCHAR_T/!wxUSE_WCHAR_T |