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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 HAVE_ICONV | |
48 | #include <iconv.h> | |
49 | #include "wx/thread.h" | |
50 | #endif | |
51 | ||
52 | #include "wx/encconv.h" | |
53 | #include "wx/fontmap.h" | |
54 | ||
55 | #ifdef __DARWIN__ | |
56 | #include "wx/mac/corefoundation/private/strconv_cf.h" | |
57 | #endif //def __DARWIN__ | |
58 | ||
59 | ||
60 | #define TRACE_STRCONV _T("strconv") | |
61 | ||
62 | // WC_UTF16 is defined only if sizeof(wchar_t) == 2, otherwise it's supposed to | |
63 | // be 4 bytes | |
64 | #if SIZEOF_WCHAR_T == 2 | |
65 | #define WC_UTF16 | |
66 | #endif | |
67 | ||
68 | ||
69 | // ============================================================================ | |
70 | // implementation | |
71 | // ============================================================================ | |
72 | ||
73 | // helper function of cMB2WC(): check if n bytes at this location are all NUL | |
74 | static bool NotAllNULs(const char *p, size_t n) | |
75 | { | |
76 | while ( n && *p++ == '\0' ) | |
77 | n--; | |
78 | ||
79 | return n != 0; | |
80 | } | |
81 | ||
82 | // ---------------------------------------------------------------------------- | |
83 | // UTF-16 en/decoding to/from UCS-4 with surrogates handling | |
84 | // ---------------------------------------------------------------------------- | |
85 | ||
86 | static size_t encode_utf16(wxUint32 input, wxUint16 *output) | |
87 | { | |
88 | if (input <= 0xffff) | |
89 | { | |
90 | if (output) | |
91 | *output = (wxUint16) input; | |
92 | ||
93 | return 1; | |
94 | } | |
95 | else if (input >= 0x110000) | |
96 | { | |
97 | return wxCONV_FAILED; | |
98 | } | |
99 | else | |
100 | { | |
101 | if (output) | |
102 | { | |
103 | *output++ = (wxUint16) ((input >> 10) + 0xd7c0); | |
104 | *output = (wxUint16) ((input & 0x3ff) + 0xdc00); | |
105 | } | |
106 | ||
107 | return 2; | |
108 | } | |
109 | } | |
110 | ||
111 | static size_t decode_utf16(const wxUint16* input, wxUint32& output) | |
112 | { | |
113 | if ((*input < 0xd800) || (*input > 0xdfff)) | |
114 | { | |
115 | output = *input; | |
116 | return 1; | |
117 | } | |
118 | else if ((input[1] < 0xdc00) || (input[1] > 0xdfff)) | |
119 | { | |
120 | output = *input; | |
121 | return wxCONV_FAILED; | |
122 | } | |
123 | else | |
124 | { | |
125 | output = ((input[0] - 0xd7c0) << 10) + (input[1] - 0xdc00); | |
126 | return 2; | |
127 | } | |
128 | } | |
129 | ||
130 | #ifdef WC_UTF16 | |
131 | typedef wchar_t wxDecodeSurrogate_t; | |
132 | #else // !WC_UTF16 | |
133 | typedef wxUint16 wxDecodeSurrogate_t; | |
134 | #endif // WC_UTF16/!WC_UTF16 | |
135 | ||
136 | // returns the next UTF-32 character from the wchar_t buffer and advances the | |
137 | // pointer to the character after this one | |
138 | // | |
139 | // if an invalid character is found, *pSrc is set to NULL, the caller must | |
140 | // check for this | |
141 | static wxUint32 wxDecodeSurrogate(const wxDecodeSurrogate_t **pSrc) | |
142 | { | |
143 | wxUint32 out; | |
144 | const size_t | |
145 | n = decode_utf16(wx_reinterpret_cast(const wxUint16 *, *pSrc), out); | |
146 | if ( n == wxCONV_FAILED ) | |
147 | *pSrc = NULL; | |
148 | else | |
149 | *pSrc += n; | |
150 | ||
151 | return out; | |
152 | } | |
153 | ||
154 | // ---------------------------------------------------------------------------- | |
155 | // wxMBConv | |
156 | // ---------------------------------------------------------------------------- | |
157 | ||
158 | size_t | |
159 | wxMBConv::ToWChar(wchar_t *dst, size_t dstLen, | |
160 | const char *src, size_t srcLen) const | |
161 | { | |
162 | // although new conversion classes are supposed to implement this function | |
163 | // directly, the existins ones only implement the old MB2WC() and so, to | |
164 | // avoid to have to rewrite all conversion classes at once, we provide a | |
165 | // default (but not efficient) implementation of this one in terms of the | |
166 | // old function by copying the input to ensure that it's NUL-terminated and | |
167 | // then using MB2WC() to convert it | |
168 | ||
169 | // the number of chars [which would be] written to dst [if it were not NULL] | |
170 | size_t dstWritten = 0; | |
171 | ||
172 | // the number of NULs terminating this string | |
173 | size_t nulLen = 0; // not really needed, but just to avoid warnings | |
174 | ||
175 | // if we were not given the input size we just have to assume that the | |
176 | // string is properly terminated as we have no way of knowing how long it | |
177 | // is anyhow, but if we do have the size check whether there are enough | |
178 | // NULs at the end | |
179 | wxCharBuffer bufTmp; | |
180 | const char *srcEnd; | |
181 | if ( srcLen != wxNO_LEN ) | |
182 | { | |
183 | // we need to know how to find the end of this string | |
184 | nulLen = GetMBNulLen(); | |
185 | if ( nulLen == wxCONV_FAILED ) | |
186 | return wxCONV_FAILED; | |
187 | ||
188 | // if there are enough NULs we can avoid the copy | |
189 | if ( srcLen < nulLen || NotAllNULs(src + srcLen - nulLen, nulLen) ) | |
190 | { | |
191 | // make a copy in order to properly NUL-terminate the string | |
192 | bufTmp = wxCharBuffer(srcLen + nulLen - 1 /* 1 will be added */); | |
193 | char * const p = bufTmp.data(); | |
194 | memcpy(p, src, srcLen); | |
195 | for ( char *s = p + srcLen; s < p + srcLen + nulLen; s++ ) | |
196 | *s = '\0'; | |
197 | ||
198 | src = bufTmp; | |
199 | } | |
200 | ||
201 | srcEnd = src + srcLen; | |
202 | } | |
203 | else // quit after the first loop iteration | |
204 | { | |
205 | srcEnd = NULL; | |
206 | } | |
207 | ||
208 | for ( ;; ) | |
209 | { | |
210 | // try to convert the current chunk | |
211 | size_t lenChunk = MB2WC(NULL, src, 0); | |
212 | if ( lenChunk == wxCONV_FAILED ) | |
213 | return wxCONV_FAILED; | |
214 | ||
215 | lenChunk++; // for the L'\0' at the end of this chunk | |
216 | ||
217 | dstWritten += lenChunk; | |
218 | ||
219 | if ( lenChunk == 1 ) | |
220 | { | |
221 | // nothing left in the input string, conversion succeeded | |
222 | break; | |
223 | } | |
224 | ||
225 | if ( dst ) | |
226 | { | |
227 | if ( dstWritten > dstLen ) | |
228 | return wxCONV_FAILED; | |
229 | ||
230 | if ( MB2WC(dst, src, lenChunk) == wxCONV_FAILED ) | |
231 | return wxCONV_FAILED; | |
232 | ||
233 | dst += lenChunk; | |
234 | } | |
235 | ||
236 | if ( !srcEnd ) | |
237 | { | |
238 | // we convert just one chunk in this case as this is the entire | |
239 | // string anyhow | |
240 | break; | |
241 | } | |
242 | ||
243 | // advance the input pointer past the end of this chunk | |
244 | while ( NotAllNULs(src, nulLen) ) | |
245 | { | |
246 | // notice that we must skip over multiple bytes here as we suppose | |
247 | // that if NUL takes 2 or 4 bytes, then all the other characters do | |
248 | // too and so if advanced by a single byte we might erroneously | |
249 | // detect sequences of NUL bytes in the middle of the input | |
250 | src += nulLen; | |
251 | } | |
252 | ||
253 | src += nulLen; // skipping over its terminator as well | |
254 | ||
255 | // note that ">=" (and not just "==") is needed here as the terminator | |
256 | // we skipped just above could be inside or just after the buffer | |
257 | // delimited by inEnd | |
258 | if ( src >= srcEnd ) | |
259 | break; | |
260 | } | |
261 | ||
262 | return dstWritten; | |
263 | } | |
264 | ||
265 | size_t | |
266 | wxMBConv::FromWChar(char *dst, size_t dstLen, | |
267 | const wchar_t *src, size_t srcLen) const | |
268 | { | |
269 | // the number of chars [which would be] written to dst [if it were not NULL] | |
270 | size_t dstWritten = 0; | |
271 | ||
272 | // make a copy of the input string unless it is already properly | |
273 | // NUL-terminated | |
274 | // | |
275 | // if we don't know its length we have no choice but to assume that it is, | |
276 | // indeed, properly terminated | |
277 | wxWCharBuffer bufTmp; | |
278 | if ( srcLen == wxNO_LEN ) | |
279 | { | |
280 | srcLen = wxWcslen(src) + 1; | |
281 | } | |
282 | else if ( srcLen != 0 && src[srcLen - 1] != L'\0' ) | |
283 | { | |
284 | // make a copy in order to properly NUL-terminate the string | |
285 | bufTmp = wxWCharBuffer(srcLen); | |
286 | memcpy(bufTmp.data(), src, srcLen * sizeof(wchar_t)); | |
287 | src = bufTmp; | |
288 | } | |
289 | ||
290 | const size_t lenNul = GetMBNulLen(); | |
291 | for ( const wchar_t * const srcEnd = src + srcLen; | |
292 | src < srcEnd; | |
293 | src += wxWcslen(src) + 1 /* skip L'\0' too */ ) | |
294 | { | |
295 | // try to convert the current chunk | |
296 | size_t lenChunk = WC2MB(NULL, src, 0); | |
297 | ||
298 | if ( lenChunk == wxCONV_FAILED ) | |
299 | return wxCONV_FAILED; | |
300 | ||
301 | lenChunk += lenNul; | |
302 | dstWritten += lenChunk; | |
303 | ||
304 | if ( dst ) | |
305 | { | |
306 | if ( dstWritten > dstLen ) | |
307 | return wxCONV_FAILED; | |
308 | ||
309 | if ( WC2MB(dst, src, lenChunk) == wxCONV_FAILED ) | |
310 | return wxCONV_FAILED; | |
311 | ||
312 | dst += lenChunk; | |
313 | } | |
314 | } | |
315 | ||
316 | return dstWritten; | |
317 | } | |
318 | ||
319 | size_t wxMBConv::MB2WC(wchar_t *outBuff, const char *inBuff, size_t outLen) const | |
320 | { | |
321 | size_t rc = ToWChar(outBuff, outLen, inBuff); | |
322 | if ( rc != wxCONV_FAILED ) | |
323 | { | |
324 | // ToWChar() returns the buffer length, i.e. including the trailing | |
325 | // NUL, while this method doesn't take it into account | |
326 | rc--; | |
327 | } | |
328 | ||
329 | return rc; | |
330 | } | |
331 | ||
332 | size_t wxMBConv::WC2MB(char *outBuff, const wchar_t *inBuff, size_t outLen) const | |
333 | { | |
334 | size_t rc = FromWChar(outBuff, outLen, inBuff); | |
335 | if ( rc != wxCONV_FAILED ) | |
336 | { | |
337 | rc -= GetMBNulLen(); | |
338 | } | |
339 | ||
340 | return rc; | |
341 | } | |
342 | ||
343 | wxMBConv::~wxMBConv() | |
344 | { | |
345 | // nothing to do here (necessary for Darwin linking probably) | |
346 | } | |
347 | ||
348 | const wxWCharBuffer wxMBConv::cMB2WC(const char *psz) const | |
349 | { | |
350 | if ( psz ) | |
351 | { | |
352 | // calculate the length of the buffer needed first | |
353 | const size_t nLen = ToWChar(NULL, 0, psz); | |
354 | if ( nLen != wxCONV_FAILED ) | |
355 | { | |
356 | // now do the actual conversion | |
357 | wxWCharBuffer buf(nLen - 1 /* +1 added implicitly */); | |
358 | ||
359 | // +1 for the trailing NULL | |
360 | if ( ToWChar(buf.data(), nLen, psz) != wxCONV_FAILED ) | |
361 | return buf; | |
362 | } | |
363 | } | |
364 | ||
365 | return wxWCharBuffer(); | |
366 | } | |
367 | ||
368 | const wxCharBuffer wxMBConv::cWC2MB(const wchar_t *pwz) const | |
369 | { | |
370 | if ( pwz ) | |
371 | { | |
372 | const size_t nLen = FromWChar(NULL, 0, pwz); | |
373 | if ( nLen != wxCONV_FAILED ) | |
374 | { | |
375 | wxCharBuffer buf(nLen - 1); | |
376 | if ( FromWChar(buf.data(), nLen, pwz) != wxCONV_FAILED ) | |
377 | return buf; | |
378 | } | |
379 | } | |
380 | ||
381 | return wxCharBuffer(); | |
382 | } | |
383 | ||
384 | const wxWCharBuffer | |
385 | wxMBConv::cMB2WC(const char *inBuff, size_t inLen, size_t *outLen) const | |
386 | { | |
387 | const size_t dstLen = ToWChar(NULL, 0, inBuff, inLen); | |
388 | if ( dstLen != wxCONV_FAILED ) | |
389 | { | |
390 | // notice that we allocate space for dstLen+1 wide characters here | |
391 | // because we want the buffer to always be NUL-terminated, even if the | |
392 | // input isn't (as otherwise the caller has no way to know its length) | |
393 | wxWCharBuffer wbuf(dstLen); | |
394 | wbuf.data()[dstLen - 1] = L'\0'; | |
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 | const size_t nulLen = GetMBNulLen(); | |
421 | ||
422 | // as above, ensure that the buffer is always NUL-terminated, even if | |
423 | // the input is not | |
424 | wxCharBuffer buf(dstLen + nulLen - 1); | |
425 | memset(buf.data() + dstLen, 0, nulLen); | |
426 | if ( FromWChar(buf.data(), dstLen, inBuff, inLen) != wxCONV_FAILED ) | |
427 | { | |
428 | if ( outLen ) | |
429 | { | |
430 | *outLen = dstLen; | |
431 | ||
432 | if ( dstLen >= nulLen && | |
433 | !NotAllNULs(buf.data() + dstLen - nulLen, nulLen) ) | |
434 | { | |
435 | // in this case the output is NUL-terminated and we're not | |
436 | // supposed to count NUL | |
437 | *outLen -= nulLen; | |
438 | } | |
439 | } | |
440 | ||
441 | return buf; | |
442 | } | |
443 | } | |
444 | ||
445 | if ( outLen ) | |
446 | *outLen = 0; | |
447 | ||
448 | return wxCharBuffer(); | |
449 | } | |
450 | ||
451 | // ---------------------------------------------------------------------------- | |
452 | // wxMBConvLibc | |
453 | // ---------------------------------------------------------------------------- | |
454 | ||
455 | size_t wxMBConvLibc::MB2WC(wchar_t *buf, const char *psz, size_t n) const | |
456 | { | |
457 | return wxMB2WC(buf, psz, n); | |
458 | } | |
459 | ||
460 | size_t wxMBConvLibc::WC2MB(char *buf, const wchar_t *psz, size_t n) const | |
461 | { | |
462 | return wxWC2MB(buf, psz, n); | |
463 | } | |
464 | ||
465 | // ---------------------------------------------------------------------------- | |
466 | // wxConvBrokenFileNames | |
467 | // ---------------------------------------------------------------------------- | |
468 | ||
469 | #ifdef __UNIX__ | |
470 | ||
471 | wxConvBrokenFileNames::wxConvBrokenFileNames(const wxString& charset) | |
472 | { | |
473 | if ( wxStricmp(charset, _T("UTF-8")) == 0 || | |
474 | wxStricmp(charset, _T("UTF8")) == 0 ) | |
475 | m_conv = new wxMBConvUTF8(wxMBConvUTF8::MAP_INVALID_UTF8_TO_PUA); | |
476 | else | |
477 | m_conv = new wxCSConv(charset); | |
478 | } | |
479 | ||
480 | #endif // __UNIX__ | |
481 | ||
482 | // ---------------------------------------------------------------------------- | |
483 | // UTF-7 | |
484 | // ---------------------------------------------------------------------------- | |
485 | ||
486 | // Implementation (C) 2004 Fredrik Roubert | |
487 | ||
488 | // | |
489 | // BASE64 decoding table | |
490 | // | |
491 | static const unsigned char utf7unb64[] = | |
492 | { | |
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, 0xff, 0xff, 0xff, 0xff, 0xff, | |
497 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
498 | 0xff, 0xff, 0xff, 0x3e, 0xff, 0xff, 0xff, 0x3f, | |
499 | 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, | |
500 | 0x3c, 0x3d, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
501 | 0xff, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, | |
502 | 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, | |
503 | 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, | |
504 | 0x17, 0x18, 0x19, 0xff, 0xff, 0xff, 0xff, 0xff, | |
505 | 0xff, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20, | |
506 | 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, | |
507 | 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 0x30, | |
508 | 0x31, 0x32, 0x33, 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 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
524 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff | |
525 | }; | |
526 | ||
527 | size_t wxMBConvUTF7::MB2WC(wchar_t *buf, const char *psz, size_t n) const | |
528 | { | |
529 | size_t len = 0; | |
530 | ||
531 | while ( *psz && (!buf || (len < n)) ) | |
532 | { | |
533 | unsigned char cc = *psz++; | |
534 | if (cc != '+') | |
535 | { | |
536 | // plain ASCII char | |
537 | if (buf) | |
538 | *buf++ = cc; | |
539 | len++; | |
540 | } | |
541 | else if (*psz == '-') | |
542 | { | |
543 | // encoded plus sign | |
544 | if (buf) | |
545 | *buf++ = cc; | |
546 | len++; | |
547 | psz++; | |
548 | } | |
549 | else // start of BASE64 encoded string | |
550 | { | |
551 | bool lsb, ok; | |
552 | unsigned int d, l; | |
553 | for ( ok = lsb = false, d = 0, l = 0; | |
554 | (cc = utf7unb64[(unsigned char)*psz]) != 0xff; | |
555 | psz++ ) | |
556 | { | |
557 | d <<= 6; | |
558 | d += cc; | |
559 | for (l += 6; l >= 8; lsb = !lsb) | |
560 | { | |
561 | unsigned char c = (unsigned char)((d >> (l -= 8)) % 256); | |
562 | if (lsb) | |
563 | { | |
564 | if (buf) | |
565 | *buf++ |= c; | |
566 | len ++; | |
567 | } | |
568 | else | |
569 | { | |
570 | if (buf) | |
571 | *buf = (wchar_t)(c << 8); | |
572 | } | |
573 | ||
574 | ok = true; | |
575 | } | |
576 | } | |
577 | ||
578 | if ( !ok ) | |
579 | { | |
580 | // in valid UTF7 we should have valid characters after '+' | |
581 | return wxCONV_FAILED; | |
582 | } | |
583 | ||
584 | if (*psz == '-') | |
585 | psz++; | |
586 | } | |
587 | } | |
588 | ||
589 | if ( buf && (len < n) ) | |
590 | *buf = '\0'; | |
591 | ||
592 | return len; | |
593 | } | |
594 | ||
595 | // | |
596 | // BASE64 encoding table | |
597 | // | |
598 | static const unsigned char utf7enb64[] = | |
599 | { | |
600 | 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', | |
601 | 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', | |
602 | 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', | |
603 | 'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f', | |
604 | 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', | |
605 | 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', | |
606 | 'w', 'x', 'y', 'z', '0', '1', '2', '3', | |
607 | '4', '5', '6', '7', '8', '9', '+', '/' | |
608 | }; | |
609 | ||
610 | // | |
611 | // UTF-7 encoding table | |
612 | // | |
613 | // 0 - Set D (directly encoded characters) | |
614 | // 1 - Set O (optional direct characters) | |
615 | // 2 - whitespace characters (optional) | |
616 | // 3 - special characters | |
617 | // | |
618 | static const unsigned char utf7encode[128] = | |
619 | { | |
620 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 3, 3, 2, 3, 3, | |
621 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
622 | 2, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 3, 0, 0, 0, 3, | |
623 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, | |
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, 3, 1, 1, 1, | |
626 | 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
627 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 3, 3 | |
628 | }; | |
629 | ||
630 | size_t wxMBConvUTF7::WC2MB(char *buf, const wchar_t *psz, size_t n) const | |
631 | { | |
632 | size_t len = 0; | |
633 | ||
634 | while (*psz && ((!buf) || (len < n))) | |
635 | { | |
636 | wchar_t cc = *psz++; | |
637 | if (cc < 0x80 && utf7encode[cc] < 1) | |
638 | { | |
639 | // plain ASCII char | |
640 | if (buf) | |
641 | *buf++ = (char)cc; | |
642 | ||
643 | len++; | |
644 | } | |
645 | #ifndef WC_UTF16 | |
646 | else if (((wxUint32)cc) > 0xffff) | |
647 | { | |
648 | // no surrogate pair generation (yet?) | |
649 | return wxCONV_FAILED; | |
650 | } | |
651 | #endif | |
652 | else | |
653 | { | |
654 | if (buf) | |
655 | *buf++ = '+'; | |
656 | ||
657 | len++; | |
658 | if (cc != '+') | |
659 | { | |
660 | // BASE64 encode string | |
661 | unsigned int lsb, d, l; | |
662 | for (d = 0, l = 0; /*nothing*/; psz++) | |
663 | { | |
664 | for (lsb = 0; lsb < 2; lsb ++) | |
665 | { | |
666 | d <<= 8; | |
667 | d += lsb ? cc & 0xff : (cc & 0xff00) >> 8; | |
668 | ||
669 | for (l += 8; l >= 6; ) | |
670 | { | |
671 | l -= 6; | |
672 | if (buf) | |
673 | *buf++ = utf7enb64[(d >> l) % 64]; | |
674 | len++; | |
675 | } | |
676 | } | |
677 | ||
678 | cc = *psz; | |
679 | if (!(cc) || (cc < 0x80 && utf7encode[cc] < 1)) | |
680 | break; | |
681 | } | |
682 | ||
683 | if (l != 0) | |
684 | { | |
685 | if (buf) | |
686 | *buf++ = utf7enb64[((d % 16) << (6 - l)) % 64]; | |
687 | ||
688 | len++; | |
689 | } | |
690 | } | |
691 | ||
692 | if (buf) | |
693 | *buf++ = '-'; | |
694 | len++; | |
695 | } | |
696 | } | |
697 | ||
698 | if (buf && (len < n)) | |
699 | *buf = 0; | |
700 | ||
701 | return len; | |
702 | } | |
703 | ||
704 | // ---------------------------------------------------------------------------- | |
705 | // UTF-8 | |
706 | // ---------------------------------------------------------------------------- | |
707 | ||
708 | static const wxUint32 utf8_max[]= | |
709 | { 0x7f, 0x7ff, 0xffff, 0x1fffff, 0x3ffffff, 0x7fffffff, 0xffffffff }; | |
710 | ||
711 | // boundaries of the private use area we use to (temporarily) remap invalid | |
712 | // characters invalid in a UTF-8 encoded string | |
713 | const wxUint32 wxUnicodePUA = 0x100000; | |
714 | const wxUint32 wxUnicodePUAEnd = wxUnicodePUA + 256; | |
715 | ||
716 | // this table gives the length of the UTF-8 encoding from its first character: | |
717 | const unsigned char tableUtf8Lengths[256] = { | |
718 | // single-byte sequences (ASCII): | |
719 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // 00..0F | |
720 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // 10..1F | |
721 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // 20..2F | |
722 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // 30..3F | |
723 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // 40..4F | |
724 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // 50..5F | |
725 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // 60..6F | |
726 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // 70..7F | |
727 | ||
728 | // these are invalid: | |
729 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 80..8F | |
730 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 90..9F | |
731 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // A0..AF | |
732 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // B0..BF | |
733 | 0, 0, // C0,C1 | |
734 | ||
735 | // two-byte sequences: | |
736 | 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, // C2..CF | |
737 | 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, // D0..DF | |
738 | ||
739 | // three-byte sequences: | |
740 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, // E0..EF | |
741 | ||
742 | // four-byte sequences: | |
743 | 4, 4, 4, 4, 4, // F0..F4 | |
744 | ||
745 | // these are invalid again (5- or 6-byte | |
746 | // sequences and sequences for code points | |
747 | // above U+10FFFF, as restricted by RFC 3629): | |
748 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 // F5..FF | |
749 | }; | |
750 | ||
751 | size_t | |
752 | wxMBConvStrictUTF8::ToWChar(wchar_t *dst, size_t dstLen, | |
753 | const char *src, size_t srcLen) const | |
754 | { | |
755 | wchar_t *out = dstLen ? dst : NULL; | |
756 | size_t written = 0; | |
757 | ||
758 | if ( srcLen == wxNO_LEN ) | |
759 | srcLen = strlen(src) + 1; | |
760 | ||
761 | for ( const char *p = src; ; p++ ) | |
762 | { | |
763 | if ( !(srcLen == wxNO_LEN ? *p : srcLen) ) | |
764 | { | |
765 | // all done successfully, just add the trailing NULL if we are not | |
766 | // using explicit length | |
767 | if ( srcLen == wxNO_LEN ) | |
768 | { | |
769 | if ( out ) | |
770 | { | |
771 | if ( !dstLen ) | |
772 | break; | |
773 | ||
774 | *out = L'\0'; | |
775 | } | |
776 | ||
777 | written++; | |
778 | } | |
779 | ||
780 | return written; | |
781 | } | |
782 | ||
783 | if ( out && !dstLen-- ) | |
784 | break; | |
785 | ||
786 | wxUint32 code; | |
787 | unsigned char c = *p; | |
788 | ||
789 | if ( c < 0x80 ) | |
790 | { | |
791 | if ( srcLen == 0 ) // the test works for wxNO_LEN too | |
792 | break; | |
793 | ||
794 | if ( srcLen != wxNO_LEN ) | |
795 | srcLen--; | |
796 | ||
797 | code = c; | |
798 | } | |
799 | else | |
800 | { | |
801 | unsigned len = tableUtf8Lengths[c]; | |
802 | if ( !len ) | |
803 | break; | |
804 | ||
805 | if ( srcLen < len ) // the test works for wxNO_LEN too | |
806 | break; | |
807 | ||
808 | if ( srcLen != wxNO_LEN ) | |
809 | srcLen -= len; | |
810 | ||
811 | // Char. number range | UTF-8 octet sequence | |
812 | // (hexadecimal) | (binary) | |
813 | // ----------------------+---------------------------------------- | |
814 | // 0000 0000 - 0000 007F | 0xxxxxxx | |
815 | // 0000 0080 - 0000 07FF | 110xxxxx 10xxxxxx | |
816 | // 0000 0800 - 0000 FFFF | 1110xxxx 10xxxxxx 10xxxxxx | |
817 | // 0001 0000 - 0010 FFFF | 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx | |
818 | // | |
819 | // Code point value is stored in bits marked with 'x', | |
820 | // lowest-order bit of the value on the right side in the diagram | |
821 | // above. (from RFC 3629) | |
822 | ||
823 | // mask to extract lead byte's value ('x' bits above), by sequence | |
824 | // length: | |
825 | static const unsigned char leadValueMask[] = { 0x7F, 0x1F, 0x0F, 0x07 }; | |
826 | ||
827 | // mask and value of lead byte's most significant bits, by length: | |
828 | static const unsigned char leadMarkerMask[] = { 0x80, 0xE0, 0xF0, 0xF8 }; | |
829 | static const unsigned char leadMarkerVal[] = { 0x00, 0xC0, 0xE0, 0xF0 }; | |
830 | ||
831 | len--; // it's more convenient to work with 0-based length here | |
832 | ||
833 | // extract the lead byte's value bits: | |
834 | if ( (c & leadMarkerMask[len]) != leadMarkerVal[len] ) | |
835 | break; | |
836 | ||
837 | code = c & leadValueMask[len]; | |
838 | ||
839 | // all remaining bytes, if any, are handled in the same way | |
840 | // regardless of sequence's length: | |
841 | for ( ; len; --len ) | |
842 | { | |
843 | c = *++p; | |
844 | if ( (c & 0xC0) != 0x80 ) | |
845 | return wxCONV_FAILED; | |
846 | ||
847 | code <<= 6; | |
848 | code |= c & 0x3F; | |
849 | } | |
850 | } | |
851 | ||
852 | #ifdef WC_UTF16 | |
853 | // cast is ok because wchar_t == wxUint16 if WC_UTF16 | |
854 | if ( encode_utf16(code, (wxUint16 *)out) == 2 ) | |
855 | { | |
856 | if ( out ) | |
857 | out++; | |
858 | written++; | |
859 | } | |
860 | #else // !WC_UTF16 | |
861 | if ( out ) | |
862 | *out = code; | |
863 | #endif // WC_UTF16/!WC_UTF16 | |
864 | ||
865 | if ( out ) | |
866 | out++; | |
867 | ||
868 | written++; | |
869 | } | |
870 | ||
871 | return wxCONV_FAILED; | |
872 | } | |
873 | ||
874 | size_t | |
875 | wxMBConvStrictUTF8::FromWChar(char *dst, size_t dstLen, | |
876 | const wchar_t *src, size_t srcLen) const | |
877 | { | |
878 | char *out = dstLen ? dst : NULL; | |
879 | size_t written = 0; | |
880 | ||
881 | for ( const wchar_t *wp = src; ; wp++ ) | |
882 | { | |
883 | if ( !(srcLen == wxNO_LEN ? *wp : srcLen--) ) | |
884 | { | |
885 | // all done successfully, just add the trailing NULL if we are not | |
886 | // using explicit length | |
887 | if ( srcLen == wxNO_LEN ) | |
888 | { | |
889 | if ( out ) | |
890 | { | |
891 | if ( !dstLen ) | |
892 | break; | |
893 | ||
894 | *out = '\0'; | |
895 | } | |
896 | ||
897 | written++; | |
898 | } | |
899 | ||
900 | return written; | |
901 | } | |
902 | ||
903 | ||
904 | wxUint32 code; | |
905 | #ifdef WC_UTF16 | |
906 | // cast is ok for WC_UTF16 | |
907 | if ( decode_utf16((const wxUint16 *)wp, code) == 2 ) | |
908 | { | |
909 | // skip the next char too as we decoded a surrogate | |
910 | wp++; | |
911 | } | |
912 | #else // wchar_t is UTF-32 | |
913 | code = *wp & 0x7fffffff; | |
914 | #endif | |
915 | ||
916 | unsigned len; | |
917 | if ( code <= 0x7F ) | |
918 | { | |
919 | len = 1; | |
920 | if ( out ) | |
921 | { | |
922 | if ( dstLen < len ) | |
923 | break; | |
924 | ||
925 | out[0] = (char)code; | |
926 | } | |
927 | } | |
928 | else if ( code <= 0x07FF ) | |
929 | { | |
930 | len = 2; | |
931 | if ( out ) | |
932 | { | |
933 | if ( dstLen < len ) | |
934 | break; | |
935 | ||
936 | // NB: this line takes 6 least significant bits, encodes them as | |
937 | // 10xxxxxx and discards them so that the next byte can be encoded: | |
938 | out[1] = 0x80 | (code & 0x3F); code >>= 6; | |
939 | out[0] = 0xC0 | code; | |
940 | } | |
941 | } | |
942 | else if ( code < 0xFFFF ) | |
943 | { | |
944 | len = 3; | |
945 | if ( out ) | |
946 | { | |
947 | if ( dstLen < len ) | |
948 | break; | |
949 | ||
950 | out[2] = 0x80 | (code & 0x3F); code >>= 6; | |
951 | out[1] = 0x80 | (code & 0x3F); code >>= 6; | |
952 | out[0] = 0xE0 | code; | |
953 | } | |
954 | } | |
955 | else if ( code <= 0x10FFFF ) | |
956 | { | |
957 | len = 4; | |
958 | if ( out ) | |
959 | { | |
960 | if ( dstLen < len ) | |
961 | break; | |
962 | ||
963 | out[3] = 0x80 | (code & 0x3F); code >>= 6; | |
964 | out[2] = 0x80 | (code & 0x3F); code >>= 6; | |
965 | out[1] = 0x80 | (code & 0x3F); code >>= 6; | |
966 | out[0] = 0xF0 | code; | |
967 | } | |
968 | } | |
969 | else | |
970 | { | |
971 | wxFAIL_MSG( _T("trying to encode undefined Unicode character") ); | |
972 | break; | |
973 | } | |
974 | ||
975 | if ( out ) | |
976 | { | |
977 | out += len; | |
978 | dstLen -= len; | |
979 | } | |
980 | ||
981 | written += len; | |
982 | } | |
983 | ||
984 | // we only get here if an error occurs during decoding | |
985 | return wxCONV_FAILED; | |
986 | } | |
987 | ||
988 | size_t wxMBConvUTF8::ToWChar(wchar_t *buf, size_t n, | |
989 | const char *psz, size_t srcLen) const | |
990 | { | |
991 | if ( m_options == MAP_INVALID_UTF8_NOT ) | |
992 | return wxMBConvStrictUTF8::ToWChar(buf, n, psz, srcLen); | |
993 | ||
994 | size_t len = 0; | |
995 | ||
996 | while ((srcLen == wxNO_LEN ? *psz : srcLen--) && ((!buf) || (len < n))) | |
997 | { | |
998 | const char *opsz = psz; | |
999 | bool invalid = false; | |
1000 | unsigned char cc = *psz++, fc = cc; | |
1001 | unsigned cnt; | |
1002 | for (cnt = 0; fc & 0x80; cnt++) | |
1003 | fc <<= 1; | |
1004 | ||
1005 | if (!cnt) | |
1006 | { | |
1007 | // plain ASCII char | |
1008 | if (buf) | |
1009 | *buf++ = cc; | |
1010 | len++; | |
1011 | ||
1012 | // escape the escape character for octal escapes | |
1013 | if ((m_options & MAP_INVALID_UTF8_TO_OCTAL) | |
1014 | && cc == '\\' && (!buf || len < n)) | |
1015 | { | |
1016 | if (buf) | |
1017 | *buf++ = cc; | |
1018 | len++; | |
1019 | } | |
1020 | } | |
1021 | else | |
1022 | { | |
1023 | cnt--; | |
1024 | if (!cnt) | |
1025 | { | |
1026 | // invalid UTF-8 sequence | |
1027 | invalid = true; | |
1028 | } | |
1029 | else | |
1030 | { | |
1031 | unsigned ocnt = cnt - 1; | |
1032 | wxUint32 res = cc & (0x3f >> cnt); | |
1033 | while (cnt--) | |
1034 | { | |
1035 | cc = *psz; | |
1036 | if ((cc & 0xC0) != 0x80) | |
1037 | { | |
1038 | // invalid UTF-8 sequence | |
1039 | invalid = true; | |
1040 | break; | |
1041 | } | |
1042 | ||
1043 | psz++; | |
1044 | res = (res << 6) | (cc & 0x3f); | |
1045 | } | |
1046 | ||
1047 | if (invalid || res <= utf8_max[ocnt]) | |
1048 | { | |
1049 | // illegal UTF-8 encoding | |
1050 | invalid = true; | |
1051 | } | |
1052 | else if ((m_options & MAP_INVALID_UTF8_TO_PUA) && | |
1053 | res >= wxUnicodePUA && res < wxUnicodePUAEnd) | |
1054 | { | |
1055 | // if one of our PUA characters turns up externally | |
1056 | // it must also be treated as an illegal sequence | |
1057 | // (a bit like you have to escape an escape character) | |
1058 | invalid = true; | |
1059 | } | |
1060 | else | |
1061 | { | |
1062 | #ifdef WC_UTF16 | |
1063 | // cast is ok because wchar_t == wxUint16 if WC_UTF16 | |
1064 | size_t pa = encode_utf16(res, (wxUint16 *)buf); | |
1065 | if (pa == wxCONV_FAILED) | |
1066 | { | |
1067 | invalid = true; | |
1068 | } | |
1069 | else | |
1070 | { | |
1071 | if (buf) | |
1072 | buf += pa; | |
1073 | len += pa; | |
1074 | } | |
1075 | #else // !WC_UTF16 | |
1076 | if (buf) | |
1077 | *buf++ = (wchar_t)res; | |
1078 | len++; | |
1079 | #endif // WC_UTF16/!WC_UTF16 | |
1080 | } | |
1081 | } | |
1082 | ||
1083 | if (invalid) | |
1084 | { | |
1085 | if (m_options & MAP_INVALID_UTF8_TO_PUA) | |
1086 | { | |
1087 | while (opsz < psz && (!buf || len < n)) | |
1088 | { | |
1089 | #ifdef WC_UTF16 | |
1090 | // cast is ok because wchar_t == wxUuint16 if WC_UTF16 | |
1091 | size_t pa = encode_utf16((unsigned char)*opsz + wxUnicodePUA, (wxUint16 *)buf); | |
1092 | wxASSERT(pa != wxCONV_FAILED); | |
1093 | if (buf) | |
1094 | buf += pa; | |
1095 | opsz++; | |
1096 | len += pa; | |
1097 | #else | |
1098 | if (buf) | |
1099 | *buf++ = (wchar_t)(wxUnicodePUA + (unsigned char)*opsz); | |
1100 | opsz++; | |
1101 | len++; | |
1102 | #endif | |
1103 | } | |
1104 | } | |
1105 | else if (m_options & MAP_INVALID_UTF8_TO_OCTAL) | |
1106 | { | |
1107 | while (opsz < psz && (!buf || len < n)) | |
1108 | { | |
1109 | if ( buf && len + 3 < n ) | |
1110 | { | |
1111 | unsigned char on = *opsz; | |
1112 | *buf++ = L'\\'; | |
1113 | *buf++ = (wchar_t)( L'0' + on / 0100 ); | |
1114 | *buf++ = (wchar_t)( L'0' + (on % 0100) / 010 ); | |
1115 | *buf++ = (wchar_t)( L'0' + on % 010 ); | |
1116 | } | |
1117 | ||
1118 | opsz++; | |
1119 | len += 4; | |
1120 | } | |
1121 | } | |
1122 | else // MAP_INVALID_UTF8_NOT | |
1123 | { | |
1124 | return wxCONV_FAILED; | |
1125 | } | |
1126 | } | |
1127 | } | |
1128 | } | |
1129 | ||
1130 | if (srcLen == wxNO_LEN && buf && (len < n)) | |
1131 | *buf = 0; | |
1132 | ||
1133 | return len + 1; | |
1134 | } | |
1135 | ||
1136 | static inline bool isoctal(wchar_t wch) | |
1137 | { | |
1138 | return L'0' <= wch && wch <= L'7'; | |
1139 | } | |
1140 | ||
1141 | size_t wxMBConvUTF8::FromWChar(char *buf, size_t n, | |
1142 | const wchar_t *psz, size_t srcLen) const | |
1143 | { | |
1144 | if ( m_options == MAP_INVALID_UTF8_NOT ) | |
1145 | return wxMBConvStrictUTF8::FromWChar(buf, n, psz, srcLen); | |
1146 | ||
1147 | size_t len = 0; | |
1148 | ||
1149 | while ((srcLen == wxNO_LEN ? *psz : srcLen--) && ((!buf) || (len < n))) | |
1150 | { | |
1151 | wxUint32 cc; | |
1152 | ||
1153 | #ifdef WC_UTF16 | |
1154 | // cast is ok for WC_UTF16 | |
1155 | size_t pa = decode_utf16((const wxUint16 *)psz, cc); | |
1156 | psz += (pa == wxCONV_FAILED) ? 1 : pa; | |
1157 | #else | |
1158 | cc = (*psz++) & 0x7fffffff; | |
1159 | #endif | |
1160 | ||
1161 | if ( (m_options & MAP_INVALID_UTF8_TO_PUA) | |
1162 | && cc >= wxUnicodePUA && cc < wxUnicodePUAEnd ) | |
1163 | { | |
1164 | if (buf) | |
1165 | *buf++ = (char)(cc - wxUnicodePUA); | |
1166 | len++; | |
1167 | } | |
1168 | else if ( (m_options & MAP_INVALID_UTF8_TO_OCTAL) | |
1169 | && cc == L'\\' && psz[0] == L'\\' ) | |
1170 | { | |
1171 | if (buf) | |
1172 | *buf++ = (char)cc; | |
1173 | psz++; | |
1174 | len++; | |
1175 | } | |
1176 | else if ( (m_options & MAP_INVALID_UTF8_TO_OCTAL) && | |
1177 | cc == L'\\' && | |
1178 | isoctal(psz[0]) && isoctal(psz[1]) && isoctal(psz[2]) ) | |
1179 | { | |
1180 | if (buf) | |
1181 | { | |
1182 | *buf++ = (char) ((psz[0] - L'0') * 0100 + | |
1183 | (psz[1] - L'0') * 010 + | |
1184 | (psz[2] - L'0')); | |
1185 | } | |
1186 | ||
1187 | psz += 3; | |
1188 | len++; | |
1189 | } | |
1190 | else | |
1191 | { | |
1192 | unsigned cnt; | |
1193 | for (cnt = 0; cc > utf8_max[cnt]; cnt++) | |
1194 | { | |
1195 | } | |
1196 | ||
1197 | if (!cnt) | |
1198 | { | |
1199 | // plain ASCII char | |
1200 | if (buf) | |
1201 | *buf++ = (char) cc; | |
1202 | len++; | |
1203 | } | |
1204 | else | |
1205 | { | |
1206 | len += cnt + 1; | |
1207 | if (buf) | |
1208 | { | |
1209 | *buf++ = (char) ((-128 >> cnt) | ((cc >> (cnt * 6)) & (0x3f >> cnt))); | |
1210 | while (cnt--) | |
1211 | *buf++ = (char) (0x80 | ((cc >> (cnt * 6)) & 0x3f)); | |
1212 | } | |
1213 | } | |
1214 | } | |
1215 | } | |
1216 | ||
1217 | if (srcLen == wxNO_LEN && buf && (len < n)) | |
1218 | *buf = 0; | |
1219 | ||
1220 | return len + 1; | |
1221 | } | |
1222 | ||
1223 | // ============================================================================ | |
1224 | // UTF-16 | |
1225 | // ============================================================================ | |
1226 | ||
1227 | #ifdef WORDS_BIGENDIAN | |
1228 | #define wxMBConvUTF16straight wxMBConvUTF16BE | |
1229 | #define wxMBConvUTF16swap wxMBConvUTF16LE | |
1230 | #else | |
1231 | #define wxMBConvUTF16swap wxMBConvUTF16BE | |
1232 | #define wxMBConvUTF16straight wxMBConvUTF16LE | |
1233 | #endif | |
1234 | ||
1235 | /* static */ | |
1236 | size_t wxMBConvUTF16Base::GetLength(const char *src, size_t srcLen) | |
1237 | { | |
1238 | if ( srcLen == wxNO_LEN ) | |
1239 | { | |
1240 | // count the number of bytes in input, including the trailing NULs | |
1241 | const wxUint16 *inBuff = wx_reinterpret_cast(const wxUint16 *, src); | |
1242 | for ( srcLen = 1; *inBuff++; srcLen++ ) | |
1243 | ; | |
1244 | ||
1245 | srcLen *= BYTES_PER_CHAR; | |
1246 | } | |
1247 | else // we already have the length | |
1248 | { | |
1249 | // we can only convert an entire number of UTF-16 characters | |
1250 | if ( srcLen % BYTES_PER_CHAR ) | |
1251 | return wxCONV_FAILED; | |
1252 | } | |
1253 | ||
1254 | return srcLen; | |
1255 | } | |
1256 | ||
1257 | // case when in-memory representation is UTF-16 too | |
1258 | #ifdef WC_UTF16 | |
1259 | ||
1260 | // ---------------------------------------------------------------------------- | |
1261 | // conversions without endianness change | |
1262 | // ---------------------------------------------------------------------------- | |
1263 | ||
1264 | size_t | |
1265 | wxMBConvUTF16straight::ToWChar(wchar_t *dst, size_t dstLen, | |
1266 | const char *src, size_t srcLen) const | |
1267 | { | |
1268 | // set up the scene for using memcpy() (which is presumably more efficient | |
1269 | // than copying the bytes one by one) | |
1270 | srcLen = GetLength(src, srcLen); | |
1271 | if ( srcLen == wxNO_LEN ) | |
1272 | return wxCONV_FAILED; | |
1273 | ||
1274 | const size_t inLen = srcLen / BYTES_PER_CHAR; | |
1275 | if ( dst ) | |
1276 | { | |
1277 | if ( dstLen < inLen ) | |
1278 | return wxCONV_FAILED; | |
1279 | ||
1280 | memcpy(dst, src, srcLen); | |
1281 | } | |
1282 | ||
1283 | return inLen; | |
1284 | } | |
1285 | ||
1286 | size_t | |
1287 | wxMBConvUTF16straight::FromWChar(char *dst, size_t dstLen, | |
1288 | const wchar_t *src, size_t srcLen) const | |
1289 | { | |
1290 | if ( srcLen == wxNO_LEN ) | |
1291 | srcLen = wxWcslen(src) + 1; | |
1292 | ||
1293 | srcLen *= BYTES_PER_CHAR; | |
1294 | ||
1295 | if ( dst ) | |
1296 | { | |
1297 | if ( dstLen < srcLen ) | |
1298 | return wxCONV_FAILED; | |
1299 | ||
1300 | memcpy(dst, src, srcLen); | |
1301 | } | |
1302 | ||
1303 | return srcLen; | |
1304 | } | |
1305 | ||
1306 | // ---------------------------------------------------------------------------- | |
1307 | // endian-reversing conversions | |
1308 | // ---------------------------------------------------------------------------- | |
1309 | ||
1310 | size_t | |
1311 | wxMBConvUTF16swap::ToWChar(wchar_t *dst, size_t dstLen, | |
1312 | const char *src, size_t srcLen) const | |
1313 | { | |
1314 | srcLen = GetLength(src, srcLen); | |
1315 | if ( srcLen == wxNO_LEN ) | |
1316 | return wxCONV_FAILED; | |
1317 | ||
1318 | srcLen /= BYTES_PER_CHAR; | |
1319 | ||
1320 | if ( dst ) | |
1321 | { | |
1322 | if ( dstLen < srcLen ) | |
1323 | return wxCONV_FAILED; | |
1324 | ||
1325 | const wxUint16 *inBuff = wx_reinterpret_cast(const wxUint16 *, src); | |
1326 | for ( size_t n = 0; n < srcLen; n++, inBuff++ ) | |
1327 | { | |
1328 | *dst++ = wxUINT16_SWAP_ALWAYS(*inBuff); | |
1329 | } | |
1330 | } | |
1331 | ||
1332 | return srcLen; | |
1333 | } | |
1334 | ||
1335 | size_t | |
1336 | wxMBConvUTF16swap::FromWChar(char *dst, size_t dstLen, | |
1337 | const wchar_t *src, size_t srcLen) const | |
1338 | { | |
1339 | if ( srcLen == wxNO_LEN ) | |
1340 | srcLen = wxWcslen(src) + 1; | |
1341 | ||
1342 | srcLen *= BYTES_PER_CHAR; | |
1343 | ||
1344 | if ( dst ) | |
1345 | { | |
1346 | if ( dstLen < srcLen ) | |
1347 | return wxCONV_FAILED; | |
1348 | ||
1349 | wxUint16 *outBuff = wx_reinterpret_cast(wxUint16 *, dst); | |
1350 | for ( size_t n = 0; n < srcLen; n += BYTES_PER_CHAR, src++ ) | |
1351 | { | |
1352 | *outBuff++ = wxUINT16_SWAP_ALWAYS(*src); | |
1353 | } | |
1354 | } | |
1355 | ||
1356 | return srcLen; | |
1357 | } | |
1358 | ||
1359 | #else // !WC_UTF16: wchar_t is UTF-32 | |
1360 | ||
1361 | // ---------------------------------------------------------------------------- | |
1362 | // conversions without endianness change | |
1363 | // ---------------------------------------------------------------------------- | |
1364 | ||
1365 | size_t | |
1366 | wxMBConvUTF16straight::ToWChar(wchar_t *dst, size_t dstLen, | |
1367 | const char *src, size_t srcLen) const | |
1368 | { | |
1369 | srcLen = GetLength(src, srcLen); | |
1370 | if ( srcLen == wxNO_LEN ) | |
1371 | return wxCONV_FAILED; | |
1372 | ||
1373 | const size_t inLen = srcLen / BYTES_PER_CHAR; | |
1374 | if ( !dst ) | |
1375 | { | |
1376 | // optimization: return maximal space which could be needed for this | |
1377 | // string even if the real size could be smaller if the buffer contains | |
1378 | // any surrogates | |
1379 | return inLen; | |
1380 | } | |
1381 | ||
1382 | size_t outLen = 0; | |
1383 | const wxUint16 *inBuff = wx_reinterpret_cast(const wxUint16 *, src); | |
1384 | for ( const wxUint16 * const inEnd = inBuff + inLen; inBuff < inEnd; ) | |
1385 | { | |
1386 | const wxUint32 ch = wxDecodeSurrogate(&inBuff); | |
1387 | if ( !inBuff ) | |
1388 | return wxCONV_FAILED; | |
1389 | ||
1390 | if ( ++outLen > dstLen ) | |
1391 | return wxCONV_FAILED; | |
1392 | ||
1393 | *dst++ = ch; | |
1394 | } | |
1395 | ||
1396 | ||
1397 | return outLen; | |
1398 | } | |
1399 | ||
1400 | size_t | |
1401 | wxMBConvUTF16straight::FromWChar(char *dst, size_t dstLen, | |
1402 | const wchar_t *src, size_t srcLen) const | |
1403 | { | |
1404 | if ( srcLen == wxNO_LEN ) | |
1405 | srcLen = wxWcslen(src) + 1; | |
1406 | ||
1407 | size_t outLen = 0; | |
1408 | wxUint16 *outBuff = wx_reinterpret_cast(wxUint16 *, dst); | |
1409 | for ( size_t n = 0; n < srcLen; n++ ) | |
1410 | { | |
1411 | wxUint16 cc[2]; | |
1412 | const size_t numChars = encode_utf16(*src++, cc); | |
1413 | if ( numChars == wxCONV_FAILED ) | |
1414 | return wxCONV_FAILED; | |
1415 | ||
1416 | outLen += numChars * BYTES_PER_CHAR; | |
1417 | if ( outBuff ) | |
1418 | { | |
1419 | if ( outLen > dstLen ) | |
1420 | return wxCONV_FAILED; | |
1421 | ||
1422 | *outBuff++ = cc[0]; | |
1423 | if ( numChars == 2 ) | |
1424 | { | |
1425 | // second character of a surrogate | |
1426 | *outBuff++ = cc[1]; | |
1427 | } | |
1428 | } | |
1429 | } | |
1430 | ||
1431 | return outLen; | |
1432 | } | |
1433 | ||
1434 | // ---------------------------------------------------------------------------- | |
1435 | // endian-reversing conversions | |
1436 | // ---------------------------------------------------------------------------- | |
1437 | ||
1438 | size_t | |
1439 | wxMBConvUTF16swap::ToWChar(wchar_t *dst, size_t dstLen, | |
1440 | const char *src, size_t srcLen) const | |
1441 | { | |
1442 | srcLen = GetLength(src, srcLen); | |
1443 | if ( srcLen == wxNO_LEN ) | |
1444 | return wxCONV_FAILED; | |
1445 | ||
1446 | const size_t inLen = srcLen / BYTES_PER_CHAR; | |
1447 | if ( !dst ) | |
1448 | { | |
1449 | // optimization: return maximal space which could be needed for this | |
1450 | // string even if the real size could be smaller if the buffer contains | |
1451 | // any surrogates | |
1452 | return inLen; | |
1453 | } | |
1454 | ||
1455 | size_t outLen = 0; | |
1456 | const wxUint16 *inBuff = wx_reinterpret_cast(const wxUint16 *, src); | |
1457 | for ( const wxUint16 * const inEnd = inBuff + inLen; inBuff < inEnd; ) | |
1458 | { | |
1459 | wxUint32 ch; | |
1460 | wxUint16 tmp[2]; | |
1461 | ||
1462 | tmp[0] = wxUINT16_SWAP_ALWAYS(*inBuff); | |
1463 | inBuff++; | |
1464 | tmp[1] = wxUINT16_SWAP_ALWAYS(*inBuff); | |
1465 | ||
1466 | const size_t numChars = decode_utf16(tmp, ch); | |
1467 | if ( numChars == wxCONV_FAILED ) | |
1468 | return wxCONV_FAILED; | |
1469 | ||
1470 | if ( numChars == 2 ) | |
1471 | inBuff++; | |
1472 | ||
1473 | if ( ++outLen > dstLen ) | |
1474 | return wxCONV_FAILED; | |
1475 | ||
1476 | *dst++ = ch; | |
1477 | } | |
1478 | ||
1479 | ||
1480 | return outLen; | |
1481 | } | |
1482 | ||
1483 | size_t | |
1484 | wxMBConvUTF16swap::FromWChar(char *dst, size_t dstLen, | |
1485 | const wchar_t *src, size_t srcLen) const | |
1486 | { | |
1487 | if ( srcLen == wxNO_LEN ) | |
1488 | srcLen = wxWcslen(src) + 1; | |
1489 | ||
1490 | size_t outLen = 0; | |
1491 | wxUint16 *outBuff = wx_reinterpret_cast(wxUint16 *, dst); | |
1492 | for ( const wchar_t *srcEnd = src + srcLen; src < srcEnd; src++ ) | |
1493 | { | |
1494 | wxUint16 cc[2]; | |
1495 | const size_t numChars = encode_utf16(*src, cc); | |
1496 | if ( numChars == wxCONV_FAILED ) | |
1497 | return wxCONV_FAILED; | |
1498 | ||
1499 | outLen += numChars * BYTES_PER_CHAR; | |
1500 | if ( outBuff ) | |
1501 | { | |
1502 | if ( outLen > dstLen ) | |
1503 | return wxCONV_FAILED; | |
1504 | ||
1505 | *outBuff++ = wxUINT16_SWAP_ALWAYS(cc[0]); | |
1506 | if ( numChars == 2 ) | |
1507 | { | |
1508 | // second character of a surrogate | |
1509 | *outBuff++ = wxUINT16_SWAP_ALWAYS(cc[1]); | |
1510 | } | |
1511 | } | |
1512 | } | |
1513 | ||
1514 | return outLen; | |
1515 | } | |
1516 | ||
1517 | #endif // WC_UTF16/!WC_UTF16 | |
1518 | ||
1519 | ||
1520 | // ============================================================================ | |
1521 | // UTF-32 | |
1522 | // ============================================================================ | |
1523 | ||
1524 | #ifdef WORDS_BIGENDIAN | |
1525 | #define wxMBConvUTF32straight wxMBConvUTF32BE | |
1526 | #define wxMBConvUTF32swap wxMBConvUTF32LE | |
1527 | #else | |
1528 | #define wxMBConvUTF32swap wxMBConvUTF32BE | |
1529 | #define wxMBConvUTF32straight wxMBConvUTF32LE | |
1530 | #endif | |
1531 | ||
1532 | ||
1533 | WXDLLIMPEXP_DATA_BASE(wxMBConvUTF32LE) wxConvUTF32LE; | |
1534 | WXDLLIMPEXP_DATA_BASE(wxMBConvUTF32BE) wxConvUTF32BE; | |
1535 | ||
1536 | /* static */ | |
1537 | size_t wxMBConvUTF32Base::GetLength(const char *src, size_t srcLen) | |
1538 | { | |
1539 | if ( srcLen == wxNO_LEN ) | |
1540 | { | |
1541 | // count the number of bytes in input, including the trailing NULs | |
1542 | const wxUint32 *inBuff = wx_reinterpret_cast(const wxUint32 *, src); | |
1543 | for ( srcLen = 1; *inBuff++; srcLen++ ) | |
1544 | ; | |
1545 | ||
1546 | srcLen *= BYTES_PER_CHAR; | |
1547 | } | |
1548 | else // we already have the length | |
1549 | { | |
1550 | // we can only convert an entire number of UTF-32 characters | |
1551 | if ( srcLen % BYTES_PER_CHAR ) | |
1552 | return wxCONV_FAILED; | |
1553 | } | |
1554 | ||
1555 | return srcLen; | |
1556 | } | |
1557 | ||
1558 | // case when in-memory representation is UTF-16 | |
1559 | #ifdef WC_UTF16 | |
1560 | ||
1561 | // ---------------------------------------------------------------------------- | |
1562 | // conversions without endianness change | |
1563 | // ---------------------------------------------------------------------------- | |
1564 | ||
1565 | size_t | |
1566 | wxMBConvUTF32straight::ToWChar(wchar_t *dst, size_t dstLen, | |
1567 | const char *src, size_t srcLen) const | |
1568 | { | |
1569 | srcLen = GetLength(src, srcLen); | |
1570 | if ( srcLen == wxNO_LEN ) | |
1571 | return wxCONV_FAILED; | |
1572 | ||
1573 | const wxUint32 *inBuff = wx_reinterpret_cast(const wxUint32 *, src); | |
1574 | const size_t inLen = srcLen / BYTES_PER_CHAR; | |
1575 | size_t outLen = 0; | |
1576 | for ( size_t n = 0; n < inLen; n++ ) | |
1577 | { | |
1578 | wxUint16 cc[2]; | |
1579 | const size_t numChars = encode_utf16(*inBuff++, cc); | |
1580 | if ( numChars == wxCONV_FAILED ) | |
1581 | return wxCONV_FAILED; | |
1582 | ||
1583 | outLen += numChars; | |
1584 | if ( dst ) | |
1585 | { | |
1586 | if ( outLen > dstLen ) | |
1587 | return wxCONV_FAILED; | |
1588 | ||
1589 | *dst++ = cc[0]; | |
1590 | if ( numChars == 2 ) | |
1591 | { | |
1592 | // second character of a surrogate | |
1593 | *dst++ = cc[1]; | |
1594 | } | |
1595 | } | |
1596 | } | |
1597 | ||
1598 | return outLen; | |
1599 | } | |
1600 | ||
1601 | size_t | |
1602 | wxMBConvUTF32straight::FromWChar(char *dst, size_t dstLen, | |
1603 | const wchar_t *src, size_t srcLen) const | |
1604 | { | |
1605 | if ( srcLen == wxNO_LEN ) | |
1606 | srcLen = wxWcslen(src) + 1; | |
1607 | ||
1608 | if ( !dst ) | |
1609 | { | |
1610 | // optimization: return maximal space which could be needed for this | |
1611 | // string instead of the exact amount which could be less if there are | |
1612 | // any surrogates in the input | |
1613 | // | |
1614 | // we consider that surrogates are rare enough to make it worthwhile to | |
1615 | // avoid running the loop below at the cost of slightly extra memory | |
1616 | // consumption | |
1617 | return srcLen * BYTES_PER_CHAR; | |
1618 | } | |
1619 | ||
1620 | wxUint32 *outBuff = wx_reinterpret_cast(wxUint32 *, dst); | |
1621 | size_t outLen = 0; | |
1622 | for ( const wchar_t * const srcEnd = src + srcLen; src < srcEnd; ) | |
1623 | { | |
1624 | const wxUint32 ch = wxDecodeSurrogate(&src); | |
1625 | if ( !src ) | |
1626 | return wxCONV_FAILED; | |
1627 | ||
1628 | outLen += BYTES_PER_CHAR; | |
1629 | ||
1630 | if ( outLen > dstLen ) | |
1631 | return wxCONV_FAILED; | |
1632 | ||
1633 | *outBuff++ = ch; | |
1634 | } | |
1635 | ||
1636 | return outLen; | |
1637 | } | |
1638 | ||
1639 | // ---------------------------------------------------------------------------- | |
1640 | // endian-reversing conversions | |
1641 | // ---------------------------------------------------------------------------- | |
1642 | ||
1643 | size_t | |
1644 | wxMBConvUTF32swap::ToWChar(wchar_t *dst, size_t dstLen, | |
1645 | const char *src, size_t srcLen) const | |
1646 | { | |
1647 | srcLen = GetLength(src, srcLen); | |
1648 | if ( srcLen == wxNO_LEN ) | |
1649 | return wxCONV_FAILED; | |
1650 | ||
1651 | const wxUint32 *inBuff = wx_reinterpret_cast(const wxUint32 *, src); | |
1652 | const size_t inLen = srcLen / BYTES_PER_CHAR; | |
1653 | size_t outLen = 0; | |
1654 | for ( size_t n = 0; n < inLen; n++, inBuff++ ) | |
1655 | { | |
1656 | wxUint16 cc[2]; | |
1657 | const size_t numChars = encode_utf16(wxUINT32_SWAP_ALWAYS(*inBuff), cc); | |
1658 | if ( numChars == wxCONV_FAILED ) | |
1659 | return wxCONV_FAILED; | |
1660 | ||
1661 | outLen += numChars; | |
1662 | if ( dst ) | |
1663 | { | |
1664 | if ( outLen > dstLen ) | |
1665 | return wxCONV_FAILED; | |
1666 | ||
1667 | *dst++ = cc[0]; | |
1668 | if ( numChars == 2 ) | |
1669 | { | |
1670 | // second character of a surrogate | |
1671 | *dst++ = cc[1]; | |
1672 | } | |
1673 | } | |
1674 | } | |
1675 | ||
1676 | return outLen; | |
1677 | } | |
1678 | ||
1679 | size_t | |
1680 | wxMBConvUTF32swap::FromWChar(char *dst, size_t dstLen, | |
1681 | const wchar_t *src, size_t srcLen) const | |
1682 | { | |
1683 | if ( srcLen == wxNO_LEN ) | |
1684 | srcLen = wxWcslen(src) + 1; | |
1685 | ||
1686 | if ( !dst ) | |
1687 | { | |
1688 | // optimization: return maximal space which could be needed for this | |
1689 | // string instead of the exact amount which could be less if there are | |
1690 | // any surrogates in the input | |
1691 | // | |
1692 | // we consider that surrogates are rare enough to make it worthwhile to | |
1693 | // avoid running the loop below at the cost of slightly extra memory | |
1694 | // consumption | |
1695 | return srcLen*BYTES_PER_CHAR; | |
1696 | } | |
1697 | ||
1698 | wxUint32 *outBuff = wx_reinterpret_cast(wxUint32 *, dst); | |
1699 | size_t outLen = 0; | |
1700 | for ( const wchar_t * const srcEnd = src + srcLen; src < srcEnd; ) | |
1701 | { | |
1702 | const wxUint32 ch = wxDecodeSurrogate(&src); | |
1703 | if ( !src ) | |
1704 | return wxCONV_FAILED; | |
1705 | ||
1706 | outLen += BYTES_PER_CHAR; | |
1707 | ||
1708 | if ( outLen > dstLen ) | |
1709 | return wxCONV_FAILED; | |
1710 | ||
1711 | *outBuff++ = wxUINT32_SWAP_ALWAYS(ch); | |
1712 | } | |
1713 | ||
1714 | return outLen; | |
1715 | } | |
1716 | ||
1717 | #else // !WC_UTF16: wchar_t is UTF-32 | |
1718 | ||
1719 | // ---------------------------------------------------------------------------- | |
1720 | // conversions without endianness change | |
1721 | // ---------------------------------------------------------------------------- | |
1722 | ||
1723 | size_t | |
1724 | wxMBConvUTF32straight::ToWChar(wchar_t *dst, size_t dstLen, | |
1725 | const char *src, size_t srcLen) const | |
1726 | { | |
1727 | // use memcpy() as it should be much faster than hand-written loop | |
1728 | srcLen = GetLength(src, srcLen); | |
1729 | if ( srcLen == wxNO_LEN ) | |
1730 | return wxCONV_FAILED; | |
1731 | ||
1732 | const size_t inLen = srcLen/BYTES_PER_CHAR; | |
1733 | if ( dst ) | |
1734 | { | |
1735 | if ( dstLen < inLen ) | |
1736 | return wxCONV_FAILED; | |
1737 | ||
1738 | memcpy(dst, src, srcLen); | |
1739 | } | |
1740 | ||
1741 | return inLen; | |
1742 | } | |
1743 | ||
1744 | size_t | |
1745 | wxMBConvUTF32straight::FromWChar(char *dst, size_t dstLen, | |
1746 | const wchar_t *src, size_t srcLen) const | |
1747 | { | |
1748 | if ( srcLen == wxNO_LEN ) | |
1749 | srcLen = wxWcslen(src) + 1; | |
1750 | ||
1751 | srcLen *= BYTES_PER_CHAR; | |
1752 | ||
1753 | if ( dst ) | |
1754 | { | |
1755 | if ( dstLen < srcLen ) | |
1756 | return wxCONV_FAILED; | |
1757 | ||
1758 | memcpy(dst, src, srcLen); | |
1759 | } | |
1760 | ||
1761 | return srcLen; | |
1762 | } | |
1763 | ||
1764 | // ---------------------------------------------------------------------------- | |
1765 | // endian-reversing conversions | |
1766 | // ---------------------------------------------------------------------------- | |
1767 | ||
1768 | size_t | |
1769 | wxMBConvUTF32swap::ToWChar(wchar_t *dst, size_t dstLen, | |
1770 | const char *src, size_t srcLen) const | |
1771 | { | |
1772 | srcLen = GetLength(src, srcLen); | |
1773 | if ( srcLen == wxNO_LEN ) | |
1774 | return wxCONV_FAILED; | |
1775 | ||
1776 | srcLen /= BYTES_PER_CHAR; | |
1777 | ||
1778 | if ( dst ) | |
1779 | { | |
1780 | if ( dstLen < srcLen ) | |
1781 | return wxCONV_FAILED; | |
1782 | ||
1783 | const wxUint32 *inBuff = wx_reinterpret_cast(const wxUint32 *, src); | |
1784 | for ( size_t n = 0; n < srcLen; n++, inBuff++ ) | |
1785 | { | |
1786 | *dst++ = wxUINT32_SWAP_ALWAYS(*inBuff); | |
1787 | } | |
1788 | } | |
1789 | ||
1790 | return srcLen; | |
1791 | } | |
1792 | ||
1793 | size_t | |
1794 | wxMBConvUTF32swap::FromWChar(char *dst, size_t dstLen, | |
1795 | const wchar_t *src, size_t srcLen) const | |
1796 | { | |
1797 | if ( srcLen == wxNO_LEN ) | |
1798 | srcLen = wxWcslen(src) + 1; | |
1799 | ||
1800 | srcLen *= BYTES_PER_CHAR; | |
1801 | ||
1802 | if ( dst ) | |
1803 | { | |
1804 | if ( dstLen < srcLen ) | |
1805 | return wxCONV_FAILED; | |
1806 | ||
1807 | wxUint32 *outBuff = wx_reinterpret_cast(wxUint32 *, dst); | |
1808 | for ( size_t n = 0; n < srcLen; n += BYTES_PER_CHAR, src++ ) | |
1809 | { | |
1810 | *outBuff++ = wxUINT32_SWAP_ALWAYS(*src); | |
1811 | } | |
1812 | } | |
1813 | ||
1814 | return srcLen; | |
1815 | } | |
1816 | ||
1817 | #endif // WC_UTF16/!WC_UTF16 | |
1818 | ||
1819 | ||
1820 | // ============================================================================ | |
1821 | // The classes doing conversion using the iconv_xxx() functions | |
1822 | // ============================================================================ | |
1823 | ||
1824 | #ifdef HAVE_ICONV | |
1825 | ||
1826 | // VS: glibc 2.1.3 is broken in that iconv() conversion to/from UCS4 fails with | |
1827 | // E2BIG if output buffer is _exactly_ as big as needed. Such case is | |
1828 | // (unless there's yet another bug in glibc) the only case when iconv() | |
1829 | // returns with (size_t)-1 (which means error) and says there are 0 bytes | |
1830 | // left in the input buffer -- when _real_ error occurs, | |
1831 | // bytes-left-in-input buffer is non-zero. Hence, this alternative test for | |
1832 | // iconv() failure. | |
1833 | // [This bug does not appear in glibc 2.2.] | |
1834 | #if defined(__GLIBC__) && __GLIBC__ == 2 && __GLIBC_MINOR__ <= 1 | |
1835 | #define ICONV_FAILED(cres, bufLeft) ((cres == (size_t)-1) && \ | |
1836 | (errno != E2BIG || bufLeft != 0)) | |
1837 | #else | |
1838 | #define ICONV_FAILED(cres, bufLeft) (cres == (size_t)-1) | |
1839 | #endif | |
1840 | ||
1841 | #define ICONV_CHAR_CAST(x) ((ICONV_CONST char **)(x)) | |
1842 | ||
1843 | #define ICONV_T_INVALID ((iconv_t)-1) | |
1844 | ||
1845 | #if SIZEOF_WCHAR_T == 4 | |
1846 | #define WC_BSWAP wxUINT32_SWAP_ALWAYS | |
1847 | #define WC_ENC wxFONTENCODING_UTF32 | |
1848 | #elif SIZEOF_WCHAR_T == 2 | |
1849 | #define WC_BSWAP wxUINT16_SWAP_ALWAYS | |
1850 | #define WC_ENC wxFONTENCODING_UTF16 | |
1851 | #else // sizeof(wchar_t) != 2 nor 4 | |
1852 | // does this ever happen? | |
1853 | #error "Unknown sizeof(wchar_t): please report this to wx-dev@lists.wxwindows.org" | |
1854 | #endif | |
1855 | ||
1856 | // ---------------------------------------------------------------------------- | |
1857 | // wxMBConv_iconv: encapsulates an iconv character set | |
1858 | // ---------------------------------------------------------------------------- | |
1859 | ||
1860 | class wxMBConv_iconv : public wxMBConv | |
1861 | { | |
1862 | public: | |
1863 | wxMBConv_iconv(const char *name); | |
1864 | virtual ~wxMBConv_iconv(); | |
1865 | ||
1866 | virtual size_t MB2WC(wchar_t *buf, const char *psz, size_t n) const; | |
1867 | virtual size_t WC2MB(char *buf, const wchar_t *psz, size_t n) const; | |
1868 | ||
1869 | // classify this encoding as explained in wxMBConv::GetMBNulLen() comment | |
1870 | virtual size_t GetMBNulLen() const; | |
1871 | ||
1872 | #if wxUSE_UNICODE_UTF8 | |
1873 | virtual bool IsUTF8() const; | |
1874 | #endif | |
1875 | ||
1876 | virtual wxMBConv *Clone() const | |
1877 | { | |
1878 | wxMBConv_iconv *p = new wxMBConv_iconv(m_name.ToAscii()); | |
1879 | p->m_minMBCharWidth = m_minMBCharWidth; | |
1880 | return p; | |
1881 | } | |
1882 | ||
1883 | bool IsOk() const | |
1884 | { return (m2w != ICONV_T_INVALID) && (w2m != ICONV_T_INVALID); } | |
1885 | ||
1886 | protected: | |
1887 | // the iconv handlers used to translate from multibyte | |
1888 | // to wide char and in the other direction | |
1889 | iconv_t m2w, | |
1890 | w2m; | |
1891 | ||
1892 | #if wxUSE_THREADS | |
1893 | // guards access to m2w and w2m objects | |
1894 | wxMutex m_iconvMutex; | |
1895 | #endif | |
1896 | ||
1897 | private: | |
1898 | // the name (for iconv_open()) of a wide char charset -- if none is | |
1899 | // available on this machine, it will remain NULL | |
1900 | static wxString ms_wcCharsetName; | |
1901 | ||
1902 | // true if the wide char encoding we use (i.e. ms_wcCharsetName) has | |
1903 | // different endian-ness than the native one | |
1904 | static bool ms_wcNeedsSwap; | |
1905 | ||
1906 | ||
1907 | // name of the encoding handled by this conversion | |
1908 | wxString m_name; | |
1909 | ||
1910 | // cached result of GetMBNulLen(); set to 0 meaning "unknown" | |
1911 | // initially | |
1912 | size_t m_minMBCharWidth; | |
1913 | }; | |
1914 | ||
1915 | // make the constructor available for unit testing | |
1916 | WXDLLIMPEXP_BASE wxMBConv* new_wxMBConv_iconv( const char* name ) | |
1917 | { | |
1918 | wxMBConv_iconv* result = new wxMBConv_iconv( name ); | |
1919 | if ( !result->IsOk() ) | |
1920 | { | |
1921 | delete result; | |
1922 | return 0; | |
1923 | } | |
1924 | ||
1925 | return result; | |
1926 | } | |
1927 | ||
1928 | wxString wxMBConv_iconv::ms_wcCharsetName; | |
1929 | bool wxMBConv_iconv::ms_wcNeedsSwap = false; | |
1930 | ||
1931 | wxMBConv_iconv::wxMBConv_iconv(const char *name) | |
1932 | : m_name(name) | |
1933 | { | |
1934 | m_minMBCharWidth = 0; | |
1935 | ||
1936 | // check for charset that represents wchar_t: | |
1937 | if ( ms_wcCharsetName.empty() ) | |
1938 | { | |
1939 | wxLogTrace(TRACE_STRCONV, _T("Looking for wide char codeset:")); | |
1940 | ||
1941 | #if wxUSE_FONTMAP | |
1942 | const wxChar **names = wxFontMapperBase::GetAllEncodingNames(WC_ENC); | |
1943 | #else // !wxUSE_FONTMAP | |
1944 | static const wxChar *names_static[] = | |
1945 | { | |
1946 | #if SIZEOF_WCHAR_T == 4 | |
1947 | _T("UCS-4"), | |
1948 | #elif SIZEOF_WCHAR_T = 2 | |
1949 | _T("UCS-2"), | |
1950 | #endif | |
1951 | NULL | |
1952 | }; | |
1953 | const wxChar **names = names_static; | |
1954 | #endif // wxUSE_FONTMAP/!wxUSE_FONTMAP | |
1955 | ||
1956 | for ( ; *names && ms_wcCharsetName.empty(); ++names ) | |
1957 | { | |
1958 | const wxString nameCS(*names); | |
1959 | ||
1960 | // first try charset with explicit bytesex info (e.g. "UCS-4LE"): | |
1961 | wxString nameXE(nameCS); | |
1962 | ||
1963 | #ifdef WORDS_BIGENDIAN | |
1964 | nameXE += _T("BE"); | |
1965 | #else // little endian | |
1966 | nameXE += _T("LE"); | |
1967 | #endif | |
1968 | ||
1969 | wxLogTrace(TRACE_STRCONV, _T(" trying charset \"%s\""), | |
1970 | nameXE.c_str()); | |
1971 | ||
1972 | m2w = iconv_open(nameXE.ToAscii(), name); | |
1973 | if ( m2w == ICONV_T_INVALID ) | |
1974 | { | |
1975 | // try charset w/o bytesex info (e.g. "UCS4") | |
1976 | wxLogTrace(TRACE_STRCONV, _T(" trying charset \"%s\""), | |
1977 | nameCS.c_str()); | |
1978 | m2w = iconv_open(nameCS.ToAscii(), name); | |
1979 | ||
1980 | // and check for bytesex ourselves: | |
1981 | if ( m2w != ICONV_T_INVALID ) | |
1982 | { | |
1983 | char buf[2], *bufPtr; | |
1984 | wchar_t wbuf[2]; | |
1985 | size_t insz, outsz; | |
1986 | size_t res; | |
1987 | ||
1988 | buf[0] = 'A'; | |
1989 | buf[1] = 0; | |
1990 | wbuf[0] = 0; | |
1991 | insz = 2; | |
1992 | outsz = SIZEOF_WCHAR_T * 2; | |
1993 | char* wbufPtr = (char*)wbuf; | |
1994 | bufPtr = buf; | |
1995 | ||
1996 | res = iconv( | |
1997 | m2w, ICONV_CHAR_CAST(&bufPtr), &insz, | |
1998 | &wbufPtr, &outsz); | |
1999 | ||
2000 | if (ICONV_FAILED(res, insz)) | |
2001 | { | |
2002 | wxLogLastError(wxT("iconv")); | |
2003 | wxLogError(_("Conversion to charset '%s' doesn't work."), | |
2004 | nameCS.c_str()); | |
2005 | } | |
2006 | else // ok, can convert to this encoding, remember it | |
2007 | { | |
2008 | ms_wcCharsetName = nameCS; | |
2009 | ms_wcNeedsSwap = wbuf[0] != (wchar_t)buf[0]; | |
2010 | } | |
2011 | } | |
2012 | } | |
2013 | else // use charset not requiring byte swapping | |
2014 | { | |
2015 | ms_wcCharsetName = nameXE; | |
2016 | } | |
2017 | } | |
2018 | ||
2019 | wxLogTrace(TRACE_STRCONV, | |
2020 | wxT("iconv wchar_t charset is \"%s\"%s"), | |
2021 | ms_wcCharsetName.empty() ? wxString("<none>") | |
2022 | : ms_wcCharsetName, | |
2023 | ms_wcNeedsSwap ? _T(" (needs swap)") | |
2024 | : _T("")); | |
2025 | } | |
2026 | else // we already have ms_wcCharsetName | |
2027 | { | |
2028 | m2w = iconv_open(ms_wcCharsetName.ToAscii(), name); | |
2029 | } | |
2030 | ||
2031 | if ( ms_wcCharsetName.empty() ) | |
2032 | { | |
2033 | w2m = ICONV_T_INVALID; | |
2034 | } | |
2035 | else | |
2036 | { | |
2037 | w2m = iconv_open(name, ms_wcCharsetName.ToAscii()); | |
2038 | if ( w2m == ICONV_T_INVALID ) | |
2039 | { | |
2040 | wxLogTrace(TRACE_STRCONV, | |
2041 | wxT("\"%s\" -> \"%s\" works but not the converse!?"), | |
2042 | ms_wcCharsetName.c_str(), name); | |
2043 | } | |
2044 | } | |
2045 | } | |
2046 | ||
2047 | wxMBConv_iconv::~wxMBConv_iconv() | |
2048 | { | |
2049 | if ( m2w != ICONV_T_INVALID ) | |
2050 | iconv_close(m2w); | |
2051 | if ( w2m != ICONV_T_INVALID ) | |
2052 | iconv_close(w2m); | |
2053 | } | |
2054 | ||
2055 | size_t wxMBConv_iconv::MB2WC(wchar_t *buf, const char *psz, size_t n) const | |
2056 | { | |
2057 | // find the string length: notice that must be done differently for | |
2058 | // NUL-terminated strings and UTF-16/32 which are terminated with 2/4 NULs | |
2059 | size_t inbuf; | |
2060 | const size_t nulLen = GetMBNulLen(); | |
2061 | switch ( nulLen ) | |
2062 | { | |
2063 | default: | |
2064 | return wxCONV_FAILED; | |
2065 | ||
2066 | case 1: | |
2067 | inbuf = strlen(psz); // arguably more optimized than our version | |
2068 | break; | |
2069 | ||
2070 | case 2: | |
2071 | case 4: | |
2072 | // for UTF-16/32 not only we need to have 2/4 consecutive NULs but | |
2073 | // they also have to start at character boundary and not span two | |
2074 | // adjacent characters | |
2075 | const char *p; | |
2076 | for ( p = psz; NotAllNULs(p, nulLen); p += nulLen ) | |
2077 | ; | |
2078 | inbuf = p - psz; | |
2079 | break; | |
2080 | } | |
2081 | ||
2082 | #if wxUSE_THREADS | |
2083 | // NB: iconv() is MT-safe, but each thread must use its own iconv_t handle. | |
2084 | // Unfortunately there are a couple of global wxCSConv objects such as | |
2085 | // wxConvLocal that are used all over wx code, so we have to make sure | |
2086 | // the handle is used by at most one thread at the time. Otherwise | |
2087 | // only a few wx classes would be safe to use from non-main threads | |
2088 | // as MB<->WC conversion would fail "randomly". | |
2089 | wxMutexLocker lock(wxConstCast(this, wxMBConv_iconv)->m_iconvMutex); | |
2090 | #endif // wxUSE_THREADS | |
2091 | ||
2092 | size_t outbuf = n * SIZEOF_WCHAR_T; | |
2093 | size_t res, cres; | |
2094 | const char *pszPtr = psz; | |
2095 | ||
2096 | if (buf) | |
2097 | { | |
2098 | char* bufPtr = (char*)buf; | |
2099 | ||
2100 | // have destination buffer, convert there | |
2101 | cres = iconv(m2w, | |
2102 | ICONV_CHAR_CAST(&pszPtr), &inbuf, | |
2103 | &bufPtr, &outbuf); | |
2104 | res = n - (outbuf / SIZEOF_WCHAR_T); | |
2105 | ||
2106 | if (ms_wcNeedsSwap) | |
2107 | { | |
2108 | // convert to native endianness | |
2109 | for ( unsigned i = 0; i < res; i++ ) | |
2110 | buf[n] = WC_BSWAP(buf[i]); | |
2111 | } | |
2112 | ||
2113 | // NUL-terminate the string if there is any space left | |
2114 | if (res < n) | |
2115 | buf[res] = 0; | |
2116 | } | |
2117 | else | |
2118 | { | |
2119 | // no destination buffer... convert using temp buffer | |
2120 | // to calculate destination buffer requirement | |
2121 | wchar_t tbuf[8]; | |
2122 | res = 0; | |
2123 | ||
2124 | do | |
2125 | { | |
2126 | char* bufPtr = (char*)tbuf; | |
2127 | outbuf = 8 * SIZEOF_WCHAR_T; | |
2128 | ||
2129 | cres = iconv(m2w, | |
2130 | ICONV_CHAR_CAST(&pszPtr), &inbuf, | |
2131 | &bufPtr, &outbuf ); | |
2132 | ||
2133 | res += 8 - (outbuf / SIZEOF_WCHAR_T); | |
2134 | } | |
2135 | while ((cres == (size_t)-1) && (errno == E2BIG)); | |
2136 | } | |
2137 | ||
2138 | if (ICONV_FAILED(cres, inbuf)) | |
2139 | { | |
2140 | //VS: it is ok if iconv fails, hence trace only | |
2141 | wxLogTrace(TRACE_STRCONV, wxT("iconv failed: %s"), wxSysErrorMsg(wxSysErrorCode())); | |
2142 | return wxCONV_FAILED; | |
2143 | } | |
2144 | ||
2145 | return res; | |
2146 | } | |
2147 | ||
2148 | size_t wxMBConv_iconv::WC2MB(char *buf, const wchar_t *psz, size_t n) const | |
2149 | { | |
2150 | #if wxUSE_THREADS | |
2151 | // NB: explained in MB2WC | |
2152 | wxMutexLocker lock(wxConstCast(this, wxMBConv_iconv)->m_iconvMutex); | |
2153 | #endif | |
2154 | ||
2155 | size_t inlen = wxWcslen(psz); | |
2156 | size_t inbuflen = inlen * SIZEOF_WCHAR_T; | |
2157 | size_t outbuflen = n; | |
2158 | size_t res, cres; | |
2159 | ||
2160 | wchar_t *tmpbuf = 0; | |
2161 | ||
2162 | if (ms_wcNeedsSwap) | |
2163 | { | |
2164 | // need to copy to temp buffer to switch endianness | |
2165 | // (doing WC_BSWAP twice on the original buffer won't help, as it | |
2166 | // could be in read-only memory, or be accessed in some other thread) | |
2167 | tmpbuf = (wchar_t *)malloc(inbuflen + SIZEOF_WCHAR_T); | |
2168 | for ( size_t i = 0; i < inlen; i++ ) | |
2169 | tmpbuf[n] = WC_BSWAP(psz[i]); | |
2170 | ||
2171 | tmpbuf[inlen] = L'\0'; | |
2172 | psz = tmpbuf; | |
2173 | } | |
2174 | ||
2175 | char* inbuf = (char*)psz; | |
2176 | if (buf) | |
2177 | { | |
2178 | // have destination buffer, convert there | |
2179 | cres = iconv(w2m, ICONV_CHAR_CAST(&inbuf), &inbuflen, &buf, &outbuflen); | |
2180 | ||
2181 | res = n - outbuflen; | |
2182 | ||
2183 | // NB: iconv was given only wcslen(psz) characters on input, and so | |
2184 | // it couldn't convert the trailing zero. Let's do it ourselves | |
2185 | // if there's some room left for it in the output buffer. | |
2186 | if (res < n) | |
2187 | buf[0] = 0; | |
2188 | } | |
2189 | else | |
2190 | { | |
2191 | // no destination buffer: convert using temp buffer | |
2192 | // to calculate destination buffer requirement | |
2193 | char tbuf[16]; | |
2194 | res = 0; | |
2195 | do | |
2196 | { | |
2197 | buf = tbuf; | |
2198 | outbuflen = 16; | |
2199 | ||
2200 | cres = iconv(w2m, ICONV_CHAR_CAST(&inbuf), &inbuflen, &buf, &outbuflen); | |
2201 | ||
2202 | res += 16 - outbuflen; | |
2203 | } | |
2204 | while ((cres == (size_t)-1) && (errno == E2BIG)); | |
2205 | } | |
2206 | ||
2207 | if (ms_wcNeedsSwap) | |
2208 | { | |
2209 | free(tmpbuf); | |
2210 | } | |
2211 | ||
2212 | if (ICONV_FAILED(cres, inbuflen)) | |
2213 | { | |
2214 | wxLogTrace(TRACE_STRCONV, wxT("iconv failed: %s"), wxSysErrorMsg(wxSysErrorCode())); | |
2215 | return wxCONV_FAILED; | |
2216 | } | |
2217 | ||
2218 | return res; | |
2219 | } | |
2220 | ||
2221 | size_t wxMBConv_iconv::GetMBNulLen() const | |
2222 | { | |
2223 | if ( m_minMBCharWidth == 0 ) | |
2224 | { | |
2225 | wxMBConv_iconv * const self = wxConstCast(this, wxMBConv_iconv); | |
2226 | ||
2227 | #if wxUSE_THREADS | |
2228 | // NB: explained in MB2WC | |
2229 | wxMutexLocker lock(self->m_iconvMutex); | |
2230 | #endif | |
2231 | ||
2232 | const wchar_t *wnul = L""; | |
2233 | char buf[8]; // should be enough for NUL in any encoding | |
2234 | size_t inLen = sizeof(wchar_t), | |
2235 | outLen = WXSIZEOF(buf); | |
2236 | char *inBuff = (char *)wnul; | |
2237 | char *outBuff = buf; | |
2238 | if ( iconv(w2m, ICONV_CHAR_CAST(&inBuff), &inLen, &outBuff, &outLen) == (size_t)-1 ) | |
2239 | { | |
2240 | self->m_minMBCharWidth = (size_t)-1; | |
2241 | } | |
2242 | else // ok | |
2243 | { | |
2244 | self->m_minMBCharWidth = outBuff - buf; | |
2245 | } | |
2246 | } | |
2247 | ||
2248 | return m_minMBCharWidth; | |
2249 | } | |
2250 | ||
2251 | #if wxUSE_UNICODE_UTF8 | |
2252 | bool wxMBConv_iconv::IsUTF8() const | |
2253 | { | |
2254 | return wxStricmp(m_name, "UTF-8") == 0 || | |
2255 | wxStricmp(m_name, "UTF8") == 0; | |
2256 | } | |
2257 | #endif | |
2258 | ||
2259 | #endif // HAVE_ICONV | |
2260 | ||
2261 | ||
2262 | // ============================================================================ | |
2263 | // Win32 conversion classes | |
2264 | // ============================================================================ | |
2265 | ||
2266 | #ifdef wxHAVE_WIN32_MB2WC | |
2267 | ||
2268 | // from utils.cpp | |
2269 | #if wxUSE_FONTMAP | |
2270 | extern WXDLLIMPEXP_BASE long wxCharsetToCodepage(const char *charset); | |
2271 | extern WXDLLIMPEXP_BASE long wxEncodingToCodepage(wxFontEncoding encoding); | |
2272 | #endif | |
2273 | ||
2274 | class wxMBConv_win32 : public wxMBConv | |
2275 | { | |
2276 | public: | |
2277 | wxMBConv_win32() | |
2278 | { | |
2279 | m_CodePage = CP_ACP; | |
2280 | m_minMBCharWidth = 0; | |
2281 | } | |
2282 | ||
2283 | wxMBConv_win32(const wxMBConv_win32& conv) | |
2284 | : wxMBConv() | |
2285 | { | |
2286 | m_CodePage = conv.m_CodePage; | |
2287 | m_minMBCharWidth = conv.m_minMBCharWidth; | |
2288 | } | |
2289 | ||
2290 | #if wxUSE_FONTMAP | |
2291 | wxMBConv_win32(const char* name) | |
2292 | { | |
2293 | m_CodePage = wxCharsetToCodepage(name); | |
2294 | m_minMBCharWidth = 0; | |
2295 | } | |
2296 | ||
2297 | wxMBConv_win32(wxFontEncoding encoding) | |
2298 | { | |
2299 | m_CodePage = wxEncodingToCodepage(encoding); | |
2300 | m_minMBCharWidth = 0; | |
2301 | } | |
2302 | #endif // wxUSE_FONTMAP | |
2303 | ||
2304 | virtual size_t MB2WC(wchar_t *buf, const char *psz, size_t n) const | |
2305 | { | |
2306 | // note that we have to use MB_ERR_INVALID_CHARS flag as it without it | |
2307 | // the behaviour is not compatible with the Unix version (using iconv) | |
2308 | // and break the library itself, e.g. wxTextInputStream::NextChar() | |
2309 | // wouldn't work if reading an incomplete MB char didn't result in an | |
2310 | // error | |
2311 | // | |
2312 | // Moreover, MB_ERR_INVALID_CHARS is only supported on Win 2K SP4 or | |
2313 | // Win XP or newer and it is not supported for UTF-[78] so we always | |
2314 | // use our own conversions in this case. See | |
2315 | // http://blogs.msdn.com/michkap/archive/2005/04/19/409566.aspx | |
2316 | // http://msdn.microsoft.com/library/en-us/intl/unicode_17si.asp | |
2317 | if ( m_CodePage == CP_UTF8 ) | |
2318 | { | |
2319 | return wxMBConvUTF8().MB2WC(buf, psz, n); | |
2320 | } | |
2321 | ||
2322 | if ( m_CodePage == CP_UTF7 ) | |
2323 | { | |
2324 | return wxMBConvUTF7().MB2WC(buf, psz, n); | |
2325 | } | |
2326 | ||
2327 | int flags = 0; | |
2328 | if ( (m_CodePage < 50000 && m_CodePage != CP_SYMBOL) && | |
2329 | IsAtLeastWin2kSP4() ) | |
2330 | { | |
2331 | flags = MB_ERR_INVALID_CHARS; | |
2332 | } | |
2333 | ||
2334 | const size_t len = ::MultiByteToWideChar | |
2335 | ( | |
2336 | m_CodePage, // code page | |
2337 | flags, // flags: fall on error | |
2338 | psz, // input string | |
2339 | -1, // its length (NUL-terminated) | |
2340 | buf, // output string | |
2341 | buf ? n : 0 // size of output buffer | |
2342 | ); | |
2343 | if ( !len ) | |
2344 | { | |
2345 | // function totally failed | |
2346 | return wxCONV_FAILED; | |
2347 | } | |
2348 | ||
2349 | // if we were really converting and didn't use MB_ERR_INVALID_CHARS, | |
2350 | // check if we succeeded, by doing a double trip: | |
2351 | if ( !flags && buf ) | |
2352 | { | |
2353 | const size_t mbLen = strlen(psz); | |
2354 | wxCharBuffer mbBuf(mbLen); | |
2355 | if ( ::WideCharToMultiByte | |
2356 | ( | |
2357 | m_CodePage, | |
2358 | 0, | |
2359 | buf, | |
2360 | -1, | |
2361 | mbBuf.data(), | |
2362 | mbLen + 1, // size in bytes, not length | |
2363 | NULL, | |
2364 | NULL | |
2365 | ) == 0 || | |
2366 | strcmp(mbBuf, psz) != 0 ) | |
2367 | { | |
2368 | // we didn't obtain the same thing we started from, hence | |
2369 | // the conversion was lossy and we consider that it failed | |
2370 | return wxCONV_FAILED; | |
2371 | } | |
2372 | } | |
2373 | ||
2374 | // note that it returns count of written chars for buf != NULL and size | |
2375 | // of the needed buffer for buf == NULL so in either case the length of | |
2376 | // the string (which never includes the terminating NUL) is one less | |
2377 | return len - 1; | |
2378 | } | |
2379 | ||
2380 | virtual size_t WC2MB(char *buf, const wchar_t *pwz, size_t n) const | |
2381 | { | |
2382 | /* | |
2383 | we have a problem here: by default, WideCharToMultiByte() may | |
2384 | replace characters unrepresentable in the target code page with bad | |
2385 | quality approximations such as turning "1/2" symbol (U+00BD) into | |
2386 | "1" for the code pages which don't have it and we, obviously, want | |
2387 | to avoid this at any price | |
2388 | ||
2389 | the trouble is that this function does it _silently_, i.e. it won't | |
2390 | even tell us whether it did or not... Win98/2000 and higher provide | |
2391 | WC_NO_BEST_FIT_CHARS but it doesn't work for the older systems and | |
2392 | we have to resort to a round trip, i.e. check that converting back | |
2393 | results in the same string -- this is, of course, expensive but | |
2394 | otherwise we simply can't be sure to not garble the data. | |
2395 | */ | |
2396 | ||
2397 | // determine if we can rely on WC_NO_BEST_FIT_CHARS: according to MSDN | |
2398 | // it doesn't work with CJK encodings (which we test for rather roughly | |
2399 | // here...) nor with UTF-7/8 nor, of course, with Windows versions not | |
2400 | // supporting it | |
2401 | BOOL usedDef wxDUMMY_INITIALIZE(false); | |
2402 | BOOL *pUsedDef; | |
2403 | int flags; | |
2404 | if ( CanUseNoBestFit() && m_CodePage < 50000 ) | |
2405 | { | |
2406 | // it's our lucky day | |
2407 | flags = WC_NO_BEST_FIT_CHARS; | |
2408 | pUsedDef = &usedDef; | |
2409 | } | |
2410 | else // old system or unsupported encoding | |
2411 | { | |
2412 | flags = 0; | |
2413 | pUsedDef = NULL; | |
2414 | } | |
2415 | ||
2416 | const size_t len = ::WideCharToMultiByte | |
2417 | ( | |
2418 | m_CodePage, // code page | |
2419 | flags, // either none or no best fit | |
2420 | pwz, // input string | |
2421 | -1, // it is (wide) NUL-terminated | |
2422 | buf, // output buffer | |
2423 | buf ? n : 0, // and its size | |
2424 | NULL, // default "replacement" char | |
2425 | pUsedDef // [out] was it used? | |
2426 | ); | |
2427 | ||
2428 | if ( !len ) | |
2429 | { | |
2430 | // function totally failed | |
2431 | return wxCONV_FAILED; | |
2432 | } | |
2433 | ||
2434 | // we did something, check if we really succeeded | |
2435 | if ( flags ) | |
2436 | { | |
2437 | // check if the conversion failed, i.e. if any replacements | |
2438 | // were done | |
2439 | if ( usedDef ) | |
2440 | return wxCONV_FAILED; | |
2441 | } | |
2442 | else // we must resort to double tripping... | |
2443 | { | |
2444 | // first we need to ensure that we really have the MB data: this is | |
2445 | // not the case if we're called with NULL buffer, in which case we | |
2446 | // need to do the conversion yet again | |
2447 | wxCharBuffer bufDef; | |
2448 | if ( !buf ) | |
2449 | { | |
2450 | bufDef = wxCharBuffer(len); | |
2451 | buf = bufDef.data(); | |
2452 | if ( !::WideCharToMultiByte(m_CodePage, flags, pwz, -1, | |
2453 | buf, len, NULL, NULL) ) | |
2454 | return wxCONV_FAILED; | |
2455 | } | |
2456 | ||
2457 | if ( !n ) | |
2458 | n = wcslen(pwz); | |
2459 | wxWCharBuffer wcBuf(n); | |
2460 | if ( MB2WC(wcBuf.data(), buf, n + 1) == wxCONV_FAILED || | |
2461 | wcscmp(wcBuf, pwz) != 0 ) | |
2462 | { | |
2463 | // we didn't obtain the same thing we started from, hence | |
2464 | // the conversion was lossy and we consider that it failed | |
2465 | return wxCONV_FAILED; | |
2466 | } | |
2467 | } | |
2468 | ||
2469 | // see the comment above for the reason of "len - 1" | |
2470 | return len - 1; | |
2471 | } | |
2472 | ||
2473 | virtual size_t GetMBNulLen() const | |
2474 | { | |
2475 | if ( m_minMBCharWidth == 0 ) | |
2476 | { | |
2477 | int len = ::WideCharToMultiByte | |
2478 | ( | |
2479 | m_CodePage, // code page | |
2480 | 0, // no flags | |
2481 | L"", // input string | |
2482 | 1, // translate just the NUL | |
2483 | NULL, // output buffer | |
2484 | 0, // and its size | |
2485 | NULL, // no replacement char | |
2486 | NULL // [out] don't care if it was used | |
2487 | ); | |
2488 | ||
2489 | wxMBConv_win32 * const self = wxConstCast(this, wxMBConv_win32); | |
2490 | switch ( len ) | |
2491 | { | |
2492 | default: | |
2493 | wxLogDebug(_T("Unexpected NUL length %d"), len); | |
2494 | self->m_minMBCharWidth = (size_t)-1; | |
2495 | break; | |
2496 | ||
2497 | case 0: | |
2498 | self->m_minMBCharWidth = (size_t)-1; | |
2499 | break; | |
2500 | ||
2501 | case 1: | |
2502 | case 2: | |
2503 | case 4: | |
2504 | self->m_minMBCharWidth = len; | |
2505 | break; | |
2506 | } | |
2507 | } | |
2508 | ||
2509 | return m_minMBCharWidth; | |
2510 | } | |
2511 | ||
2512 | virtual wxMBConv *Clone() const { return new wxMBConv_win32(*this); } | |
2513 | ||
2514 | bool IsOk() const { return m_CodePage != -1; } | |
2515 | ||
2516 | private: | |
2517 | static bool CanUseNoBestFit() | |
2518 | { | |
2519 | static int s_isWin98Or2k = -1; | |
2520 | ||
2521 | if ( s_isWin98Or2k == -1 ) | |
2522 | { | |
2523 | int verMaj, verMin; | |
2524 | switch ( wxGetOsVersion(&verMaj, &verMin) ) | |
2525 | { | |
2526 | case wxOS_WINDOWS_9X: | |
2527 | s_isWin98Or2k = verMaj >= 4 && verMin >= 10; | |
2528 | break; | |
2529 | ||
2530 | case wxOS_WINDOWS_NT: | |
2531 | s_isWin98Or2k = verMaj >= 5; | |
2532 | break; | |
2533 | ||
2534 | default: | |
2535 | // unknown: be conservative by default | |
2536 | s_isWin98Or2k = 0; | |
2537 | break; | |
2538 | } | |
2539 | ||
2540 | wxASSERT_MSG( s_isWin98Or2k != -1, _T("should be set above") ); | |
2541 | } | |
2542 | ||
2543 | return s_isWin98Or2k == 1; | |
2544 | } | |
2545 | ||
2546 | static bool IsAtLeastWin2kSP4() | |
2547 | { | |
2548 | #ifdef __WXWINCE__ | |
2549 | return false; | |
2550 | #else | |
2551 | static int s_isAtLeastWin2kSP4 = -1; | |
2552 | ||
2553 | if ( s_isAtLeastWin2kSP4 == -1 ) | |
2554 | { | |
2555 | OSVERSIONINFOEX ver; | |
2556 | ||
2557 | memset(&ver, 0, sizeof(ver)); | |
2558 | ver.dwOSVersionInfoSize = sizeof(ver); | |
2559 | GetVersionEx((OSVERSIONINFO*)&ver); | |
2560 | ||
2561 | s_isAtLeastWin2kSP4 = | |
2562 | ((ver.dwMajorVersion > 5) || // Vista+ | |
2563 | (ver.dwMajorVersion == 5 && ver.dwMinorVersion > 0) || // XP/2003 | |
2564 | (ver.dwMajorVersion == 5 && ver.dwMinorVersion == 0 && | |
2565 | ver.wServicePackMajor >= 4)) // 2000 SP4+ | |
2566 | ? 1 : 0; | |
2567 | } | |
2568 | ||
2569 | return s_isAtLeastWin2kSP4 == 1; | |
2570 | #endif | |
2571 | } | |
2572 | ||
2573 | ||
2574 | // the code page we're working with | |
2575 | long m_CodePage; | |
2576 | ||
2577 | // cached result of GetMBNulLen(), set to 0 initially meaning | |
2578 | // "unknown" | |
2579 | size_t m_minMBCharWidth; | |
2580 | }; | |
2581 | ||
2582 | #endif // wxHAVE_WIN32_MB2WC | |
2583 | ||
2584 | ||
2585 | // ============================================================================ | |
2586 | // wxEncodingConverter based conversion classes | |
2587 | // ============================================================================ | |
2588 | ||
2589 | #if wxUSE_FONTMAP | |
2590 | ||
2591 | class wxMBConv_wxwin : public wxMBConv | |
2592 | { | |
2593 | private: | |
2594 | void Init() | |
2595 | { | |
2596 | // Refuse to use broken wxEncodingConverter code for Mac-specific encodings. | |
2597 | // The wxMBConv_cf class does a better job. | |
2598 | m_ok = (m_enc < wxFONTENCODING_MACMIN || m_enc > wxFONTENCODING_MACMAX) && | |
2599 | m2w.Init(m_enc, wxFONTENCODING_UNICODE) && | |
2600 | w2m.Init(wxFONTENCODING_UNICODE, m_enc); | |
2601 | } | |
2602 | ||
2603 | public: | |
2604 | // temporarily just use wxEncodingConverter stuff, | |
2605 | // so that it works while a better implementation is built | |
2606 | wxMBConv_wxwin(const char* name) | |
2607 | { | |
2608 | if (name) | |
2609 | m_enc = wxFontMapperBase::Get()->CharsetToEncoding(name, false); | |
2610 | else | |
2611 | m_enc = wxFONTENCODING_SYSTEM; | |
2612 | ||
2613 | Init(); | |
2614 | } | |
2615 | ||
2616 | wxMBConv_wxwin(wxFontEncoding enc) | |
2617 | { | |
2618 | m_enc = enc; | |
2619 | ||
2620 | Init(); | |
2621 | } | |
2622 | ||
2623 | size_t MB2WC(wchar_t *buf, const char *psz, size_t WXUNUSED(n)) const | |
2624 | { | |
2625 | size_t inbuf = strlen(psz); | |
2626 | if (buf) | |
2627 | { | |
2628 | if (!m2w.Convert(psz, buf)) | |
2629 | return wxCONV_FAILED; | |
2630 | } | |
2631 | return inbuf; | |
2632 | } | |
2633 | ||
2634 | size_t WC2MB(char *buf, const wchar_t *psz, size_t WXUNUSED(n)) const | |
2635 | { | |
2636 | const size_t inbuf = wxWcslen(psz); | |
2637 | if (buf) | |
2638 | { | |
2639 | if (!w2m.Convert(psz, buf)) | |
2640 | return wxCONV_FAILED; | |
2641 | } | |
2642 | ||
2643 | return inbuf; | |
2644 | } | |
2645 | ||
2646 | virtual size_t GetMBNulLen() const | |
2647 | { | |
2648 | switch ( m_enc ) | |
2649 | { | |
2650 | case wxFONTENCODING_UTF16BE: | |
2651 | case wxFONTENCODING_UTF16LE: | |
2652 | return 2; | |
2653 | ||
2654 | case wxFONTENCODING_UTF32BE: | |
2655 | case wxFONTENCODING_UTF32LE: | |
2656 | return 4; | |
2657 | ||
2658 | default: | |
2659 | return 1; | |
2660 | } | |
2661 | } | |
2662 | ||
2663 | virtual wxMBConv *Clone() const { return new wxMBConv_wxwin(m_enc); } | |
2664 | ||
2665 | bool IsOk() const { return m_ok; } | |
2666 | ||
2667 | public: | |
2668 | wxFontEncoding m_enc; | |
2669 | wxEncodingConverter m2w, w2m; | |
2670 | ||
2671 | private: | |
2672 | // were we initialized successfully? | |
2673 | bool m_ok; | |
2674 | ||
2675 | DECLARE_NO_COPY_CLASS(wxMBConv_wxwin) | |
2676 | }; | |
2677 | ||
2678 | // make the constructors available for unit testing | |
2679 | WXDLLIMPEXP_BASE wxMBConv* new_wxMBConv_wxwin( const char* name ) | |
2680 | { | |
2681 | wxMBConv_wxwin* result = new wxMBConv_wxwin( name ); | |
2682 | if ( !result->IsOk() ) | |
2683 | { | |
2684 | delete result; | |
2685 | return 0; | |
2686 | } | |
2687 | ||
2688 | return result; | |
2689 | } | |
2690 | ||
2691 | #endif // wxUSE_FONTMAP | |
2692 | ||
2693 | // ============================================================================ | |
2694 | // wxCSConv implementation | |
2695 | // ============================================================================ | |
2696 | ||
2697 | void wxCSConv::Init() | |
2698 | { | |
2699 | m_name = NULL; | |
2700 | m_convReal = NULL; | |
2701 | m_deferred = true; | |
2702 | } | |
2703 | ||
2704 | wxCSConv::wxCSConv(const wxString& charset) | |
2705 | { | |
2706 | Init(); | |
2707 | ||
2708 | if ( !charset.empty() ) | |
2709 | { | |
2710 | SetName(charset.ToAscii()); | |
2711 | } | |
2712 | ||
2713 | #if wxUSE_FONTMAP | |
2714 | m_encoding = wxFontMapperBase::GetEncodingFromName(charset); | |
2715 | #else | |
2716 | m_encoding = wxFONTENCODING_SYSTEM; | |
2717 | #endif | |
2718 | } | |
2719 | ||
2720 | wxCSConv::wxCSConv(wxFontEncoding encoding) | |
2721 | { | |
2722 | if ( encoding == wxFONTENCODING_MAX || encoding == wxFONTENCODING_DEFAULT ) | |
2723 | { | |
2724 | wxFAIL_MSG( _T("invalid encoding value in wxCSConv ctor") ); | |
2725 | ||
2726 | encoding = wxFONTENCODING_SYSTEM; | |
2727 | } | |
2728 | ||
2729 | Init(); | |
2730 | ||
2731 | m_encoding = encoding; | |
2732 | } | |
2733 | ||
2734 | wxCSConv::~wxCSConv() | |
2735 | { | |
2736 | Clear(); | |
2737 | } | |
2738 | ||
2739 | wxCSConv::wxCSConv(const wxCSConv& conv) | |
2740 | : wxMBConv() | |
2741 | { | |
2742 | Init(); | |
2743 | ||
2744 | SetName(conv.m_name); | |
2745 | m_encoding = conv.m_encoding; | |
2746 | } | |
2747 | ||
2748 | wxCSConv& wxCSConv::operator=(const wxCSConv& conv) | |
2749 | { | |
2750 | Clear(); | |
2751 | ||
2752 | SetName(conv.m_name); | |
2753 | m_encoding = conv.m_encoding; | |
2754 | ||
2755 | return *this; | |
2756 | } | |
2757 | ||
2758 | void wxCSConv::Clear() | |
2759 | { | |
2760 | free(m_name); | |
2761 | delete m_convReal; | |
2762 | ||
2763 | m_name = NULL; | |
2764 | m_convReal = NULL; | |
2765 | } | |
2766 | ||
2767 | void wxCSConv::SetName(const char *charset) | |
2768 | { | |
2769 | if (charset) | |
2770 | { | |
2771 | m_name = wxStrdup(charset); | |
2772 | m_deferred = true; | |
2773 | } | |
2774 | } | |
2775 | ||
2776 | #if wxUSE_FONTMAP | |
2777 | ||
2778 | WX_DECLARE_HASH_MAP( wxFontEncoding, wxString, wxIntegerHash, wxIntegerEqual, | |
2779 | wxEncodingNameCache ); | |
2780 | ||
2781 | static wxEncodingNameCache gs_nameCache; | |
2782 | #endif | |
2783 | ||
2784 | wxMBConv *wxCSConv::DoCreate() const | |
2785 | { | |
2786 | #if wxUSE_FONTMAP | |
2787 | wxLogTrace(TRACE_STRCONV, | |
2788 | wxT("creating conversion for %s"), | |
2789 | (m_name ? m_name | |
2790 | : (const char*)wxFontMapperBase::GetEncodingName(m_encoding).mb_str())); | |
2791 | #endif // wxUSE_FONTMAP | |
2792 | ||
2793 | // check for the special case of ASCII or ISO8859-1 charset: as we have | |
2794 | // special knowledge of it anyhow, we don't need to create a special | |
2795 | // conversion object | |
2796 | if ( m_encoding == wxFONTENCODING_ISO8859_1 || | |
2797 | m_encoding == wxFONTENCODING_DEFAULT ) | |
2798 | { | |
2799 | // don't convert at all | |
2800 | return NULL; | |
2801 | } | |
2802 | ||
2803 | // we trust OS to do conversion better than we can so try external | |
2804 | // conversion methods first | |
2805 | // | |
2806 | // the full order is: | |
2807 | // 1. OS conversion (iconv() under Unix or Win32 API) | |
2808 | // 2. hard coded conversions for UTF | |
2809 | // 3. wxEncodingConverter as fall back | |
2810 | ||
2811 | // step (1) | |
2812 | #ifdef HAVE_ICONV | |
2813 | #if !wxUSE_FONTMAP | |
2814 | if ( m_name ) | |
2815 | #endif // !wxUSE_FONTMAP | |
2816 | { | |
2817 | #if wxUSE_FONTMAP | |
2818 | wxFontEncoding encoding(m_encoding); | |
2819 | #endif | |
2820 | ||
2821 | if ( m_name ) | |
2822 | { | |
2823 | wxMBConv_iconv *conv = new wxMBConv_iconv(m_name); | |
2824 | if ( conv->IsOk() ) | |
2825 | return conv; | |
2826 | ||
2827 | delete conv; | |
2828 | ||
2829 | #if wxUSE_FONTMAP | |
2830 | encoding = | |
2831 | wxFontMapperBase::Get()->CharsetToEncoding(m_name, false); | |
2832 | #endif // wxUSE_FONTMAP | |
2833 | } | |
2834 | #if wxUSE_FONTMAP | |
2835 | { | |
2836 | const wxEncodingNameCache::iterator it = gs_nameCache.find(encoding); | |
2837 | if ( it != gs_nameCache.end() ) | |
2838 | { | |
2839 | if ( it->second.empty() ) | |
2840 | return NULL; | |
2841 | ||
2842 | wxMBConv_iconv *conv = new wxMBConv_iconv(it->second.ToAscii()); | |
2843 | if ( conv->IsOk() ) | |
2844 | return conv; | |
2845 | ||
2846 | delete conv; | |
2847 | } | |
2848 | ||
2849 | const wxChar** names = wxFontMapperBase::GetAllEncodingNames(encoding); | |
2850 | // CS : in case this does not return valid names (eg for MacRoman) | |
2851 | // encoding got a 'failure' entry in the cache all the same, | |
2852 | // although it just has to be created using a different method, so | |
2853 | // only store failed iconv creation attempts (or perhaps we | |
2854 | // shoulnd't do this at all ?) | |
2855 | if ( names[0] != NULL ) | |
2856 | { | |
2857 | for ( ; *names; ++names ) | |
2858 | { | |
2859 | // FIXME-UTF8: wxFontMapperBase::GetAllEncodingNames() | |
2860 | // will need changes that will obsolete this | |
2861 | wxString name(*names); | |
2862 | wxMBConv_iconv *conv = new wxMBConv_iconv(name.ToAscii()); | |
2863 | if ( conv->IsOk() ) | |
2864 | { | |
2865 | gs_nameCache[encoding] = *names; | |
2866 | return conv; | |
2867 | } | |
2868 | ||
2869 | delete conv; | |
2870 | } | |
2871 | ||
2872 | gs_nameCache[encoding] = _T(""); // cache the failure | |
2873 | } | |
2874 | } | |
2875 | #endif // wxUSE_FONTMAP | |
2876 | } | |
2877 | #endif // HAVE_ICONV | |
2878 | ||
2879 | #ifdef wxHAVE_WIN32_MB2WC | |
2880 | { | |
2881 | #if wxUSE_FONTMAP | |
2882 | wxMBConv_win32 *conv = m_name ? new wxMBConv_win32(m_name) | |
2883 | : new wxMBConv_win32(m_encoding); | |
2884 | if ( conv->IsOk() ) | |
2885 | return conv; | |
2886 | ||
2887 | delete conv; | |
2888 | #else | |
2889 | return NULL; | |
2890 | #endif | |
2891 | } | |
2892 | #endif // wxHAVE_WIN32_MB2WC | |
2893 | ||
2894 | #ifdef __DARWIN__ | |
2895 | { | |
2896 | // leave UTF16 and UTF32 to the built-ins of wx | |
2897 | if ( m_name || ( m_encoding < wxFONTENCODING_UTF16BE || | |
2898 | ( m_encoding >= wxFONTENCODING_MACMIN && m_encoding <= wxFONTENCODING_MACMAX ) ) ) | |
2899 | { | |
2900 | #if wxUSE_FONTMAP | |
2901 | wxMBConv_cf *conv = m_name ? new wxMBConv_cf(m_name) | |
2902 | : new wxMBConv_cf(m_encoding); | |
2903 | #else | |
2904 | wxMBConv_cf *conv = new wxMBConv_cf(m_encoding); | |
2905 | #endif | |
2906 | ||
2907 | if ( conv->IsOk() ) | |
2908 | return conv; | |
2909 | ||
2910 | delete conv; | |
2911 | } | |
2912 | } | |
2913 | #endif // __DARWIN__ | |
2914 | ||
2915 | // step (2) | |
2916 | wxFontEncoding enc = m_encoding; | |
2917 | #if wxUSE_FONTMAP | |
2918 | if ( enc == wxFONTENCODING_SYSTEM && m_name ) | |
2919 | { | |
2920 | // use "false" to suppress interactive dialogs -- we can be called from | |
2921 | // anywhere and popping up a dialog from here is the last thing we want to | |
2922 | // do | |
2923 | enc = wxFontMapperBase::Get()->CharsetToEncoding(m_name, false); | |
2924 | } | |
2925 | #endif // wxUSE_FONTMAP | |
2926 | ||
2927 | switch ( enc ) | |
2928 | { | |
2929 | case wxFONTENCODING_UTF7: | |
2930 | return new wxMBConvUTF7; | |
2931 | ||
2932 | case wxFONTENCODING_UTF8: | |
2933 | return new wxMBConvUTF8; | |
2934 | ||
2935 | case wxFONTENCODING_UTF16BE: | |
2936 | return new wxMBConvUTF16BE; | |
2937 | ||
2938 | case wxFONTENCODING_UTF16LE: | |
2939 | return new wxMBConvUTF16LE; | |
2940 | ||
2941 | case wxFONTENCODING_UTF32BE: | |
2942 | return new wxMBConvUTF32BE; | |
2943 | ||
2944 | case wxFONTENCODING_UTF32LE: | |
2945 | return new wxMBConvUTF32LE; | |
2946 | ||
2947 | default: | |
2948 | // nothing to do but put here to suppress gcc warnings | |
2949 | break; | |
2950 | } | |
2951 | ||
2952 | // step (3) | |
2953 | #if wxUSE_FONTMAP | |
2954 | { | |
2955 | wxMBConv_wxwin *conv = m_name ? new wxMBConv_wxwin(m_name) | |
2956 | : new wxMBConv_wxwin(m_encoding); | |
2957 | if ( conv->IsOk() ) | |
2958 | return conv; | |
2959 | ||
2960 | delete conv; | |
2961 | } | |
2962 | #endif // wxUSE_FONTMAP | |
2963 | ||
2964 | // NB: This is a hack to prevent deadlock. What could otherwise happen | |
2965 | // in Unicode build: wxConvLocal creation ends up being here | |
2966 | // because of some failure and logs the error. But wxLog will try to | |
2967 | // attach a timestamp, for which it will need wxConvLocal (to convert | |
2968 | // time to char* and then wchar_t*), but that fails, tries to log the | |
2969 | // error, but wxLog has an (already locked) critical section that | |
2970 | // guards the static buffer. | |
2971 | static bool alreadyLoggingError = false; | |
2972 | if (!alreadyLoggingError) | |
2973 | { | |
2974 | alreadyLoggingError = true; | |
2975 | wxLogError(_("Cannot convert from the charset '%s'!"), | |
2976 | m_name ? m_name | |
2977 | : | |
2978 | #if wxUSE_FONTMAP | |
2979 | (const char*)wxFontMapperBase::GetEncodingDescription(m_encoding).ToAscii() | |
2980 | #else // !wxUSE_FONTMAP | |
2981 | (const char*)wxString::Format(_("encoding %i"), m_encoding).ToAscii() | |
2982 | #endif // wxUSE_FONTMAP/!wxUSE_FONTMAP | |
2983 | ); | |
2984 | ||
2985 | alreadyLoggingError = false; | |
2986 | } | |
2987 | ||
2988 | return NULL; | |
2989 | } | |
2990 | ||
2991 | void wxCSConv::CreateConvIfNeeded() const | |
2992 | { | |
2993 | if ( m_deferred ) | |
2994 | { | |
2995 | wxCSConv *self = (wxCSConv *)this; // const_cast | |
2996 | ||
2997 | // if we don't have neither the name nor the encoding, use the default | |
2998 | // encoding for this system | |
2999 | if ( !m_name && m_encoding == wxFONTENCODING_SYSTEM ) | |
3000 | { | |
3001 | #if wxUSE_INTL | |
3002 | self->m_encoding = wxLocale::GetSystemEncoding(); | |
3003 | #else | |
3004 | // fallback to some reasonable default: | |
3005 | self->m_encoding = wxFONTENCODING_ISO8859_1; | |
3006 | #endif // wxUSE_INTL | |
3007 | } | |
3008 | ||
3009 | self->m_convReal = DoCreate(); | |
3010 | self->m_deferred = false; | |
3011 | } | |
3012 | } | |
3013 | ||
3014 | bool wxCSConv::IsOk() const | |
3015 | { | |
3016 | CreateConvIfNeeded(); | |
3017 | ||
3018 | // special case: no convReal created for wxFONTENCODING_ISO8859_1 | |
3019 | if ( m_encoding == wxFONTENCODING_ISO8859_1 ) | |
3020 | return true; // always ok as we do it ourselves | |
3021 | ||
3022 | // m_convReal->IsOk() is called at its own creation, so we know it must | |
3023 | // be ok if m_convReal is non-NULL | |
3024 | return m_convReal != NULL; | |
3025 | } | |
3026 | ||
3027 | size_t wxCSConv::ToWChar(wchar_t *dst, size_t dstLen, | |
3028 | const char *src, size_t srcLen) const | |
3029 | { | |
3030 | CreateConvIfNeeded(); | |
3031 | ||
3032 | if (m_convReal) | |
3033 | return m_convReal->ToWChar(dst, dstLen, src, srcLen); | |
3034 | ||
3035 | // latin-1 (direct) | |
3036 | return wxMBConv::ToWChar(dst, dstLen, src, srcLen); | |
3037 | } | |
3038 | ||
3039 | size_t wxCSConv::FromWChar(char *dst, size_t dstLen, | |
3040 | const wchar_t *src, size_t srcLen) const | |
3041 | { | |
3042 | CreateConvIfNeeded(); | |
3043 | ||
3044 | if (m_convReal) | |
3045 | return m_convReal->FromWChar(dst, dstLen, src, srcLen); | |
3046 | ||
3047 | // latin-1 (direct) | |
3048 | return wxMBConv::FromWChar(dst, dstLen, src, srcLen); | |
3049 | } | |
3050 | ||
3051 | size_t wxCSConv::MB2WC(wchar_t *buf, const char *psz, size_t n) const | |
3052 | { | |
3053 | CreateConvIfNeeded(); | |
3054 | ||
3055 | if (m_convReal) | |
3056 | return m_convReal->MB2WC(buf, psz, n); | |
3057 | ||
3058 | // latin-1 (direct) | |
3059 | size_t len = strlen(psz); | |
3060 | ||
3061 | if (buf) | |
3062 | { | |
3063 | for (size_t c = 0; c <= len; c++) | |
3064 | buf[c] = (unsigned char)(psz[c]); | |
3065 | } | |
3066 | ||
3067 | return len; | |
3068 | } | |
3069 | ||
3070 | size_t wxCSConv::WC2MB(char *buf, const wchar_t *psz, size_t n) const | |
3071 | { | |
3072 | CreateConvIfNeeded(); | |
3073 | ||
3074 | if (m_convReal) | |
3075 | return m_convReal->WC2MB(buf, psz, n); | |
3076 | ||
3077 | // latin-1 (direct) | |
3078 | const size_t len = wxWcslen(psz); | |
3079 | if (buf) | |
3080 | { | |
3081 | for (size_t c = 0; c <= len; c++) | |
3082 | { | |
3083 | if (psz[c] > 0xFF) | |
3084 | return wxCONV_FAILED; | |
3085 | ||
3086 | buf[c] = (char)psz[c]; | |
3087 | } | |
3088 | } | |
3089 | else | |
3090 | { | |
3091 | for (size_t c = 0; c <= len; c++) | |
3092 | { | |
3093 | if (psz[c] > 0xFF) | |
3094 | return wxCONV_FAILED; | |
3095 | } | |
3096 | } | |
3097 | ||
3098 | return len; | |
3099 | } | |
3100 | ||
3101 | size_t wxCSConv::GetMBNulLen() const | |
3102 | { | |
3103 | CreateConvIfNeeded(); | |
3104 | ||
3105 | if ( m_convReal ) | |
3106 | { | |
3107 | return m_convReal->GetMBNulLen(); | |
3108 | } | |
3109 | ||
3110 | // otherwise, we are ISO-8859-1 | |
3111 | return 1; | |
3112 | } | |
3113 | ||
3114 | #if wxUSE_UNICODE_UTF8 | |
3115 | bool wxCSConv::IsUTF8() const | |
3116 | { | |
3117 | CreateConvIfNeeded(); | |
3118 | ||
3119 | if ( m_convReal ) | |
3120 | { | |
3121 | return m_convReal->IsUTF8(); | |
3122 | } | |
3123 | ||
3124 | // otherwise, we are ISO-8859-1 | |
3125 | return false; | |
3126 | } | |
3127 | #endif | |
3128 | ||
3129 | ||
3130 | #if wxUSE_UNICODE | |
3131 | ||
3132 | wxWCharBuffer wxSafeConvertMB2WX(const char *s) | |
3133 | { | |
3134 | if ( !s ) | |
3135 | return wxWCharBuffer(); | |
3136 | ||
3137 | wxWCharBuffer wbuf(wxConvLibc.cMB2WX(s)); | |
3138 | if ( !wbuf ) | |
3139 | wbuf = wxMBConvUTF8().cMB2WX(s); | |
3140 | if ( !wbuf ) | |
3141 | wbuf = wxConvISO8859_1.cMB2WX(s); | |
3142 | ||
3143 | return wbuf; | |
3144 | } | |
3145 | ||
3146 | wxCharBuffer wxSafeConvertWX2MB(const wchar_t *ws) | |
3147 | { | |
3148 | if ( !ws ) | |
3149 | return wxCharBuffer(); | |
3150 | ||
3151 | wxCharBuffer buf(wxConvLibc.cWX2MB(ws)); | |
3152 | if ( !buf ) | |
3153 | buf = wxMBConvUTF8(wxMBConvUTF8::MAP_INVALID_UTF8_TO_OCTAL).cWX2MB(ws); | |
3154 | ||
3155 | return buf; | |
3156 | } | |
3157 | ||
3158 | #endif // wxUSE_UNICODE | |
3159 | ||
3160 | // ---------------------------------------------------------------------------- | |
3161 | // globals | |
3162 | // ---------------------------------------------------------------------------- | |
3163 | ||
3164 | // NB: The reason why we create converted objects in this convoluted way, | |
3165 | // using a factory function instead of global variable, is that they | |
3166 | // may be used at static initialization time (some of them are used by | |
3167 | // wxString ctors and there may be a global wxString object). In other | |
3168 | // words, possibly _before_ the converter global object would be | |
3169 | // initialized. | |
3170 | ||
3171 | #undef wxConvLibc | |
3172 | #undef wxConvUTF8 | |
3173 | #undef wxConvUTF7 | |
3174 | #undef wxConvLocal | |
3175 | #undef wxConvISO8859_1 | |
3176 | ||
3177 | #define WX_DEFINE_GLOBAL_CONV2(klass, impl_klass, name, ctor_args) \ | |
3178 | WXDLLIMPEXP_DATA_BASE(klass*) name##Ptr = NULL; \ | |
3179 | WXDLLIMPEXP_BASE klass* wxGet_##name##Ptr() \ | |
3180 | { \ | |
3181 | static impl_klass name##Obj ctor_args; \ | |
3182 | return &name##Obj; \ | |
3183 | } \ | |
3184 | /* this ensures that all global converter objects are created */ \ | |
3185 | /* by the time static initialization is done, i.e. before any */ \ | |
3186 | /* thread is launched: */ \ | |
3187 | static klass* gs_##name##instance = wxGet_##name##Ptr() | |
3188 | ||
3189 | #define WX_DEFINE_GLOBAL_CONV(klass, name, ctor_args) \ | |
3190 | WX_DEFINE_GLOBAL_CONV2(klass, klass, name, ctor_args) | |
3191 | ||
3192 | #ifdef __WINDOWS__ | |
3193 | WX_DEFINE_GLOBAL_CONV2(wxMBConv, wxMBConv_win32, wxConvLibc, wxEMPTY_PARAMETER_VALUE); | |
3194 | #else | |
3195 | WX_DEFINE_GLOBAL_CONV2(wxMBConv, wxMBConvLibc, wxConvLibc, wxEMPTY_PARAMETER_VALUE); | |
3196 | #endif | |
3197 | ||
3198 | // NB: we can't use wxEMPTY_PARAMETER_VALUE as final argument here because it's | |
3199 | // passed to WX_DEFINE_GLOBAL_CONV2 after a macro expansion and so still | |
3200 | // provokes an error message about "not enough macro parameters"; and we | |
3201 | // can't use "()" here as the name##Obj declaration would be parsed as a | |
3202 | // function declaration then, so use a semicolon and live with an extra | |
3203 | // empty statement (and hope that no compilers warns about this) | |
3204 | WX_DEFINE_GLOBAL_CONV(wxMBConvStrictUTF8, wxConvUTF8, ;); | |
3205 | WX_DEFINE_GLOBAL_CONV(wxMBConvUTF7, wxConvUTF7, ;); | |
3206 | ||
3207 | WX_DEFINE_GLOBAL_CONV(wxCSConv, wxConvLocal, (wxFONTENCODING_SYSTEM)); | |
3208 | WX_DEFINE_GLOBAL_CONV(wxCSConv, wxConvISO8859_1, (wxFONTENCODING_ISO8859_1)); | |
3209 | ||
3210 | WXDLLIMPEXP_DATA_BASE(wxMBConv *) wxConvCurrent = wxGet_wxConvLibcPtr(); | |
3211 | WXDLLIMPEXP_DATA_BASE(wxMBConv *) wxConvUI = wxGet_wxConvLocalPtr(); | |
3212 | ||
3213 | #ifdef __DARWIN__ | |
3214 | // The xnu kernel always communicates file paths in decomposed UTF-8. | |
3215 | // WARNING: Are we sure that CFString's conversion will cause decomposition? | |
3216 | static wxMBConv_cf wxConvMacUTF8DObj(wxFONTENCODING_UTF8); | |
3217 | #endif | |
3218 | ||
3219 | WXDLLIMPEXP_DATA_BASE(wxMBConv *) wxConvFileName = | |
3220 | #ifdef __DARWIN__ | |
3221 | &wxConvMacUTF8DObj; | |
3222 | #else // !__DARWIN__ | |
3223 | wxGet_wxConvLibcPtr(); | |
3224 | #endif // __DARWIN__/!__DARWIN__ | |
3225 | ||
3226 | #else // !wxUSE_WCHAR_T | |
3227 | ||
3228 | // FIXME-UTF8: remove this, wxUSE_WCHAR_T is required now | |
3229 | // stand-ins in absence of wchar_t | |
3230 | WXDLLIMPEXP_DATA_BASE(wxMBConv) wxConvLibc, | |
3231 | wxConvISO8859_1, | |
3232 | wxConvLocal, | |
3233 | wxConvUTF8; | |
3234 | ||
3235 | #endif // wxUSE_WCHAR_T/!wxUSE_WCHAR_T |