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[wxWidgets.git] / src / common / strconv.cpp
1 /////////////////////////////////////////////////////////////////////////////
2 // Name: 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 // ============================================================================
16 // declarations
17 // ============================================================================
18
19 // ----------------------------------------------------------------------------
20 // headers
21 // ----------------------------------------------------------------------------
22
23 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
24 #pragma implementation "strconv.h"
25 #endif
26
27 // For compilers that support precompilation, includes "wx.h".
28 #include "wx/wxprec.h"
29
30 #ifdef __BORLANDC__
31 #pragma hdrstop
32 #endif
33
34 #ifndef WX_PRECOMP
35 #include "wx/intl.h"
36 #include "wx/log.h"
37 #endif // WX_PRECOMP
38
39 #include "wx/strconv.h"
40
41 #if wxUSE_WCHAR_T
42
43 #ifdef __WINDOWS__
44 #include "wx/msw/private.h"
45 #include "wx/msw/missing.h"
46 #endif
47
48 #ifndef __WXWINCE__
49 #include <errno.h>
50 #endif
51
52 #include <ctype.h>
53 #include <string.h>
54 #include <stdlib.h>
55
56 #if defined(__WIN32__) && !defined(__WXMICROWIN__)
57 #define wxHAVE_WIN32_MB2WC
58 #endif // __WIN32__ but !__WXMICROWIN__
59
60 // ----------------------------------------------------------------------------
61 // headers
62 // ----------------------------------------------------------------------------
63
64 #ifdef __SALFORDC__
65 #include <clib.h>
66 #endif
67
68 #ifdef HAVE_ICONV
69 #include <iconv.h>
70 #include "wx/thread.h"
71 #endif
72
73 #include "wx/encconv.h"
74 #include "wx/fontmap.h"
75 #include "wx/utils.h"
76
77 #ifdef __WXMAC__
78 #ifndef __DARWIN__
79 #include <ATSUnicode.h>
80 #include <TextCommon.h>
81 #include <TextEncodingConverter.h>
82 #endif
83
84 #include "wx/mac/private.h" // includes mac headers
85 #endif
86 // ----------------------------------------------------------------------------
87 // macros
88 // ----------------------------------------------------------------------------
89
90 #define BSWAP_UCS4(str, len) { unsigned _c; for (_c=0; _c<len; _c++) str[_c]=wxUINT32_SWAP_ALWAYS(str[_c]); }
91 #define BSWAP_UTF16(str, len) { unsigned _c; for (_c=0; _c<len; _c++) str[_c]=wxUINT16_SWAP_ALWAYS(str[_c]); }
92
93 #if SIZEOF_WCHAR_T == 4
94 #define WC_NAME "UCS4"
95 #define WC_BSWAP BSWAP_UCS4
96 #ifdef WORDS_BIGENDIAN
97 #define WC_NAME_BEST "UCS-4BE"
98 #else
99 #define WC_NAME_BEST "UCS-4LE"
100 #endif
101 #elif SIZEOF_WCHAR_T == 2
102 #define WC_NAME "UTF16"
103 #define WC_BSWAP BSWAP_UTF16
104 #define WC_UTF16
105 #ifdef WORDS_BIGENDIAN
106 #define WC_NAME_BEST "UTF-16BE"
107 #else
108 #define WC_NAME_BEST "UTF-16LE"
109 #endif
110 #else // sizeof(wchar_t) != 2 nor 4
111 // does this ever happen?
112 #error "Unknown sizeof(wchar_t): please report this to wx-dev@lists.wxwindows.org"
113 #endif
114
115 // ============================================================================
116 // implementation
117 // ============================================================================
118
119 // ----------------------------------------------------------------------------
120 // UTF-16 en/decoding to/from UCS-4
121 // ----------------------------------------------------------------------------
122
123
124 static size_t encode_utf16(wxUint32 input, wxUint16 *output)
125 {
126 if (input<=0xffff)
127 {
128 if (output)
129 *output = (wxUint16) input;
130 return 1;
131 }
132 else if (input>=0x110000)
133 {
134 return (size_t)-1;
135 }
136 else
137 {
138 if (output)
139 {
140 *output++ = (wxUint16) ((input >> 10)+0xd7c0);
141 *output = (wxUint16) ((input&0x3ff)+0xdc00);
142 }
143 return 2;
144 }
145 }
146
147 static size_t decode_utf16(const wxUint16* input, wxUint32& output)
148 {
149 if ((*input<0xd800) || (*input>0xdfff))
150 {
151 output = *input;
152 return 1;
153 }
154 else if ((input[1]<0xdc00) || (input[1]>0xdfff))
155 {
156 output = *input;
157 return (size_t)-1;
158 }
159 else
160 {
161 output = ((input[0] - 0xd7c0) << 10) + (input[1] - 0xdc00);
162 return 2;
163 }
164 }
165
166
167 // ----------------------------------------------------------------------------
168 // wxMBConv
169 // ----------------------------------------------------------------------------
170
171 wxMBConv::~wxMBConv()
172 {
173 // nothing to do here (necessary for Darwin linking probably)
174 }
175
176 const wxWCharBuffer wxMBConv::cMB2WC(const char *psz) const
177 {
178 if ( psz )
179 {
180 // calculate the length of the buffer needed first
181 size_t nLen = MB2WC(NULL, psz, 0);
182 if ( nLen != (size_t)-1 )
183 {
184 // now do the actual conversion
185 wxWCharBuffer buf(nLen);
186 nLen = MB2WC(buf.data(), psz, nLen + 1); // with the trailing NULL
187 if ( nLen != (size_t)-1 )
188 {
189 return buf;
190 }
191 }
192 }
193
194 wxWCharBuffer buf((wchar_t *)NULL);
195
196 return buf;
197 }
198
199 const wxCharBuffer wxMBConv::cWC2MB(const wchar_t *pwz) const
200 {
201 if ( pwz )
202 {
203 size_t nLen = WC2MB(NULL, pwz, 0);
204 if ( nLen != (size_t)-1 )
205 {
206 wxCharBuffer buf(nLen+3); // space for a wxUint32 trailing zero
207 nLen = WC2MB(buf.data(), pwz, nLen + 4);
208 if ( nLen != (size_t)-1 )
209 {
210 return buf;
211 }
212 }
213 }
214
215 wxCharBuffer buf((char *)NULL);
216
217 return buf;
218 }
219
220 const wxWCharBuffer wxMBConv::cMB2WC(const char *szString, size_t nStringLen, size_t* pOutSize) const
221 {
222 wxASSERT(pOutSize != NULL);
223
224 const char* szEnd = szString + nStringLen + 1;
225 const char* szPos = szString;
226 const char* szStart = szPos;
227
228 size_t nActualLength = 0;
229 size_t nCurrentSize = nStringLen; //try normal size first (should never resize?)
230
231 wxWCharBuffer theBuffer(nCurrentSize);
232
233 //Convert the string until the length() is reached, continuing the
234 //loop every time a null character is reached
235 while(szPos != szEnd)
236 {
237 wxASSERT(szPos < szEnd); //something is _really_ screwed up if this rings true
238
239 //Get the length of the current (sub)string
240 size_t nLen = MB2WC(NULL, szPos, 0);
241
242 //Invalid conversion?
243 if( nLen == (size_t)-1 )
244 {
245 *pOutSize = 0;
246 theBuffer.data()[0u] = wxT('\0');
247 return theBuffer;
248 }
249
250
251 //Increase the actual length (+1 for current null character)
252 nActualLength += nLen + 1;
253
254 //if buffer too big, realloc the buffer
255 if (nActualLength > (nCurrentSize+1))
256 {
257 wxWCharBuffer theNewBuffer(nCurrentSize << 1);
258 memcpy(theNewBuffer.data(), theBuffer.data(), nCurrentSize * sizeof(wchar_t));
259 theBuffer = theNewBuffer;
260 nCurrentSize <<= 1;
261 }
262
263 //Convert the current (sub)string
264 if ( MB2WC(&theBuffer.data()[szPos - szStart], szPos, nLen + 1) == (size_t)-1 )
265 {
266 *pOutSize = 0;
267 theBuffer.data()[0u] = wxT('\0');
268 return theBuffer;
269 }
270
271 //Increment to next (sub)string
272 //Note that we have to use strlen instead of nLen here
273 //because XX2XX gives us the size of the output buffer,
274 //which is not necessarily the length of the string
275 szPos += strlen(szPos) + 1;
276 }
277
278 //success - return actual length and the buffer
279 *pOutSize = nActualLength;
280 return theBuffer;
281 }
282
283 const wxCharBuffer wxMBConv::cWC2MB(const wchar_t *szString, size_t nStringLen, size_t* pOutSize) const
284 {
285 wxASSERT(pOutSize != NULL);
286
287 const wchar_t* szEnd = szString + nStringLen + 1;
288 const wchar_t* szPos = szString;
289 const wchar_t* szStart = szPos;
290
291 size_t nActualLength = 0;
292 size_t nCurrentSize = nStringLen << 2; //try * 4 first
293
294 wxCharBuffer theBuffer(nCurrentSize);
295
296 //Convert the string until the length() is reached, continuing the
297 //loop every time a null character is reached
298 while(szPos != szEnd)
299 {
300 wxASSERT(szPos < szEnd); //something is _really_ screwed up if this rings true
301
302 //Get the length of the current (sub)string
303 size_t nLen = WC2MB(NULL, szPos, 0);
304
305 //Invalid conversion?
306 if( nLen == (size_t)-1 )
307 {
308 *pOutSize = 0;
309 theBuffer.data()[0u] = wxT('\0');
310 return theBuffer;
311 }
312
313 //Increase the actual length (+1 for current null character)
314 nActualLength += nLen + 1;
315
316 //if buffer too big, realloc the buffer
317 if (nActualLength > (nCurrentSize+1))
318 {
319 wxCharBuffer theNewBuffer(nCurrentSize << 1);
320 memcpy(theNewBuffer.data(), theBuffer.data(), nCurrentSize);
321 theBuffer = theNewBuffer;
322 nCurrentSize <<= 1;
323 }
324
325 //Convert the current (sub)string
326 if(WC2MB(&theBuffer.data()[szPos - szStart], szPos, nLen + 1) == (size_t)-1 )
327 {
328 *pOutSize = 0;
329 theBuffer.data()[0u] = wxT('\0');
330 return theBuffer;
331 }
332
333 //Increment to next (sub)string
334 //Note that we have to use wxWcslen instead of nLen here
335 //because XX2XX gives us the size of the output buffer,
336 //which is not necessarily the length of the string
337 szPos += wxWcslen(szPos) + 1;
338 }
339
340 //success - return actual length and the buffer
341 *pOutSize = nActualLength;
342 return theBuffer;
343 }
344
345 // ----------------------------------------------------------------------------
346 // wxMBConvLibc
347 // ----------------------------------------------------------------------------
348
349 size_t wxMBConvLibc::MB2WC(wchar_t *buf, const char *psz, size_t n) const
350 {
351 return wxMB2WC(buf, psz, n);
352 }
353
354 size_t wxMBConvLibc::WC2MB(char *buf, const wchar_t *psz, size_t n) const
355 {
356 return wxWC2MB(buf, psz, n);
357 }
358
359 #ifdef __UNIX__
360
361 // ----------------------------------------------------------------------------
362 // wxConvBrokenFileNames
363 // ----------------------------------------------------------------------------
364
365 wxConvBrokenFileNames::wxConvBrokenFileNames(const wxChar *charset)
366 {
367 if ( !charset || wxStricmp(charset, _T("UTF-8")) == 0
368 || wxStricmp(charset, _T("UTF8")) == 0 )
369 m_conv = new wxMBConvUTF8(wxMBConvUTF8::MAP_INVALID_UTF8_TO_OCTAL);
370 else
371 m_conv = new wxCSConv(charset);
372 }
373
374 size_t
375 wxConvBrokenFileNames::MB2WC(wchar_t *outputBuf,
376 const char *psz,
377 size_t outputSize) const
378 {
379 return m_conv->MB2WC( outputBuf, psz, outputSize );
380 }
381
382 size_t
383 wxConvBrokenFileNames::WC2MB(char *outputBuf,
384 const wchar_t *psz,
385 size_t outputSize) const
386 {
387 return m_conv->WC2MB( outputBuf, psz, outputSize );
388 }
389
390 #endif
391
392 // ----------------------------------------------------------------------------
393 // UTF-7
394 // ----------------------------------------------------------------------------
395
396 // Implementation (C) 2004 Fredrik Roubert
397
398 //
399 // BASE64 decoding table
400 //
401 static const unsigned char utf7unb64[] =
402 {
403 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
404 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
405 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
406 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
407 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
408 0xff, 0xff, 0xff, 0x3e, 0xff, 0xff, 0xff, 0x3f,
409 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b,
410 0x3c, 0x3d, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
411 0xff, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06,
412 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e,
413 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16,
414 0x17, 0x18, 0x19, 0xff, 0xff, 0xff, 0xff, 0xff,
415 0xff, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20,
416 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28,
417 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 0x30,
418 0x31, 0x32, 0x33, 0xff, 0xff, 0xff, 0xff, 0xff,
419 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
420 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
421 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
422 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
423 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
424 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
425 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
426 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
427 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
428 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
429 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
430 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
431 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
432 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
433 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
434 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
435 };
436
437 size_t wxMBConvUTF7::MB2WC(wchar_t *buf, const char *psz, size_t n) const
438 {
439 size_t len = 0;
440
441 while (*psz && ((!buf) || (len < n)))
442 {
443 unsigned char cc = *psz++;
444 if (cc != '+')
445 {
446 // plain ASCII char
447 if (buf)
448 *buf++ = cc;
449 len++;
450 }
451 else if (*psz == '-')
452 {
453 // encoded plus sign
454 if (buf)
455 *buf++ = cc;
456 len++;
457 psz++;
458 }
459 else
460 {
461 // BASE64 encoded string
462 bool lsb;
463 unsigned char c;
464 unsigned int d, l;
465 for (lsb = false, d = 0, l = 0;
466 (cc = utf7unb64[(unsigned char)*psz]) != 0xff; psz++)
467 {
468 d <<= 6;
469 d += cc;
470 for (l += 6; l >= 8; lsb = !lsb)
471 {
472 c = (unsigned char)((d >> (l -= 8)) % 256);
473 if (lsb)
474 {
475 if (buf)
476 *buf++ |= c;
477 len ++;
478 }
479 else
480 if (buf)
481 *buf = (wchar_t)(c << 8);
482 }
483 }
484 if (*psz == '-')
485 psz++;
486 }
487 }
488 if (buf && (len < n))
489 *buf = 0;
490 return len;
491 }
492
493 //
494 // BASE64 encoding table
495 //
496 static const unsigned char utf7enb64[] =
497 {
498 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H',
499 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P',
500 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X',
501 'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f',
502 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n',
503 'o', 'p', 'q', 'r', 's', 't', 'u', 'v',
504 'w', 'x', 'y', 'z', '0', '1', '2', '3',
505 '4', '5', '6', '7', '8', '9', '+', '/'
506 };
507
508 //
509 // UTF-7 encoding table
510 //
511 // 0 - Set D (directly encoded characters)
512 // 1 - Set O (optional direct characters)
513 // 2 - whitespace characters (optional)
514 // 3 - special characters
515 //
516 static const unsigned char utf7encode[128] =
517 {
518 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 3, 3, 2, 3, 3,
519 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
520 2, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 3, 0, 0, 0, 3,
521 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0,
522 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
523 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 3, 1, 1, 1,
524 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
525 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 3, 3
526 };
527
528 size_t wxMBConvUTF7::WC2MB(char *buf, const wchar_t *psz, size_t n) const
529 {
530
531
532 size_t len = 0;
533
534 while (*psz && ((!buf) || (len < n)))
535 {
536 wchar_t cc = *psz++;
537 if (cc < 0x80 && utf7encode[cc] < 1)
538 {
539 // plain ASCII char
540 if (buf)
541 *buf++ = (char)cc;
542 len++;
543 }
544 #ifndef WC_UTF16
545 else if (((wxUint32)cc) > 0xffff)
546 {
547 // no surrogate pair generation (yet?)
548 return (size_t)-1;
549 }
550 #endif
551 else
552 {
553 if (buf)
554 *buf++ = '+';
555 len++;
556 if (cc != '+')
557 {
558 // BASE64 encode string
559 unsigned int lsb, d, l;
560 for (d = 0, l = 0;; psz++)
561 {
562 for (lsb = 0; lsb < 2; lsb ++)
563 {
564 d <<= 8;
565 d += lsb ? cc & 0xff : (cc & 0xff00) >> 8;
566
567 for (l += 8; l >= 6; )
568 {
569 l -= 6;
570 if (buf)
571 *buf++ = utf7enb64[(d >> l) % 64];
572 len++;
573 }
574 }
575 cc = *psz;
576 if (!(cc) || (cc < 0x80 && utf7encode[cc] < 1))
577 break;
578 }
579 if (l != 0)
580 {
581 if (buf)
582 *buf++ = utf7enb64[((d % 16) << (6 - l)) % 64];
583 len++;
584 }
585 }
586 if (buf)
587 *buf++ = '-';
588 len++;
589 }
590 }
591 if (buf && (len < n))
592 *buf = 0;
593 return len;
594 }
595
596 // ----------------------------------------------------------------------------
597 // UTF-8
598 // ----------------------------------------------------------------------------
599
600 static wxUint32 utf8_max[]=
601 { 0x7f, 0x7ff, 0xffff, 0x1fffff, 0x3ffffff, 0x7fffffff, 0xffffffff };
602
603 // boundaries of the private use area we use to (temporarily) remap invalid
604 // characters invalid in a UTF-8 encoded string
605 const wxUint32 wxUnicodePUA = 0x100000;
606 const wxUint32 wxUnicodePUAEnd = wxUnicodePUA + 256;
607
608 size_t wxMBConvUTF8::MB2WC(wchar_t *buf, const char *psz, size_t n) const
609 {
610 size_t len = 0;
611
612 while (*psz && ((!buf) || (len < n)))
613 {
614 const char *opsz = psz;
615 bool invalid = false;
616 unsigned char cc = *psz++, fc = cc;
617 unsigned cnt;
618 for (cnt = 0; fc & 0x80; cnt++)
619 fc <<= 1;
620 if (!cnt)
621 {
622 // plain ASCII char
623 if (buf)
624 *buf++ = cc;
625 len++;
626
627 // escape the escape character for octal escapes
628 if ((m_options & MAP_INVALID_UTF8_TO_OCTAL)
629 && cc == '\\' && (!buf || len < n))
630 {
631 if (buf)
632 *buf++ = cc;
633 len++;
634 }
635 }
636 else
637 {
638 cnt--;
639 if (!cnt)
640 {
641 // invalid UTF-8 sequence
642 invalid = true;
643 }
644 else
645 {
646 unsigned ocnt = cnt - 1;
647 wxUint32 res = cc & (0x3f >> cnt);
648 while (cnt--)
649 {
650 cc = *psz;
651 if ((cc & 0xC0) != 0x80)
652 {
653 // invalid UTF-8 sequence
654 invalid = true;
655 break;
656 }
657 psz++;
658 res = (res << 6) | (cc & 0x3f);
659 }
660 if (invalid || res <= utf8_max[ocnt])
661 {
662 // illegal UTF-8 encoding
663 invalid = true;
664 }
665 else if ((m_options & MAP_INVALID_UTF8_TO_PUA) &&
666 res >= wxUnicodePUA && res < wxUnicodePUAEnd)
667 {
668 // if one of our PUA characters turns up externally
669 // it must also be treated as an illegal sequence
670 // (a bit like you have to escape an escape character)
671 invalid = true;
672 }
673 else
674 {
675 #ifdef WC_UTF16
676 // cast is ok because wchar_t == wxUuint16 if WC_UTF16
677 size_t pa = encode_utf16(res, (wxUint16 *)buf);
678 if (pa == (size_t)-1)
679 {
680 invalid = true;
681 }
682 else
683 {
684 if (buf)
685 buf += pa;
686 len += pa;
687 }
688 #else // !WC_UTF16
689 if (buf)
690 *buf++ = res;
691 len++;
692 #endif // WC_UTF16/!WC_UTF16
693 }
694 }
695 if (invalid)
696 {
697 if (m_options & MAP_INVALID_UTF8_TO_PUA)
698 {
699 while (opsz < psz && (!buf || len < n))
700 {
701 #ifdef WC_UTF16
702 // cast is ok because wchar_t == wxUuint16 if WC_UTF16
703 size_t pa = encode_utf16((unsigned char)*opsz + wxUnicodePUA, (wxUint16 *)buf);
704 wxASSERT(pa != (size_t)-1);
705 if (buf)
706 buf += pa;
707 opsz++;
708 len += pa;
709 #else
710 if (buf)
711 *buf++ = wxUnicodePUA + (unsigned char)*opsz;
712 opsz++;
713 len++;
714 #endif
715 }
716 }
717 else if (m_options & MAP_INVALID_UTF8_TO_OCTAL)
718 {
719 while (opsz < psz && (!buf || len < n))
720 {
721 if ( buf && len + 3 < n )
722 {
723 unsigned char n = *opsz;
724 *buf++ = L'\\';
725 *buf++ = (wchar_t)( L'0' + n / 0100 );
726 *buf++ = (wchar_t)( L'0' + (n % 0100) / 010 );
727 *buf++ = (wchar_t)( L'0' + n % 010 );
728 }
729 opsz++;
730 len += 4;
731 }
732 }
733 else // MAP_INVALID_UTF8_NOT
734 {
735 return (size_t)-1;
736 }
737 }
738 }
739 }
740 if (buf && (len < n))
741 *buf = 0;
742 return len;
743 }
744
745 static inline bool isoctal(wchar_t wch)
746 {
747 return L'0' <= wch && wch <= L'7';
748 }
749
750 size_t wxMBConvUTF8::WC2MB(char *buf, const wchar_t *psz, size_t n) const
751 {
752 size_t len = 0;
753
754 while (*psz && ((!buf) || (len < n)))
755 {
756 wxUint32 cc;
757 #ifdef WC_UTF16
758 // cast is ok for WC_UTF16
759 size_t pa = decode_utf16((const wxUint16 *)psz, cc);
760 psz += (pa == (size_t)-1) ? 1 : pa;
761 #else
762 cc=(*psz++) & 0x7fffffff;
763 #endif
764
765 if ( (m_options & MAP_INVALID_UTF8_TO_PUA)
766 && cc >= wxUnicodePUA && cc < wxUnicodePUAEnd )
767 {
768 if (buf)
769 *buf++ = (char)(cc - wxUnicodePUA);
770 len++;
771 }
772 else if ( (m_options & MAP_INVALID_UTF8_TO_OCTAL)
773 && cc == L'\\' && psz[0] == L'\\' )
774 {
775 if (buf)
776 *buf++ = (char)cc;
777 psz++;
778 len++;
779 }
780 else if ( (m_options & MAP_INVALID_UTF8_TO_OCTAL) &&
781 cc == L'\\' &&
782 isoctal(psz[0]) && isoctal(psz[1]) && isoctal(psz[2]) )
783 {
784 if (buf)
785 {
786 *buf++ = (char) ((psz[0] - L'0')*0100 +
787 (psz[1] - L'0')*010 +
788 (psz[2] - L'0'));
789 }
790
791 psz += 3;
792 len++;
793 }
794 else
795 {
796 unsigned cnt;
797 for (cnt = 0; cc > utf8_max[cnt]; cnt++) {}
798 if (!cnt)
799 {
800 // plain ASCII char
801 if (buf)
802 *buf++ = (char) cc;
803 len++;
804 }
805
806 else
807 {
808 len += cnt + 1;
809 if (buf)
810 {
811 *buf++ = (char) ((-128 >> cnt) | ((cc >> (cnt * 6)) & (0x3f >> cnt)));
812 while (cnt--)
813 *buf++ = (char) (0x80 | ((cc >> (cnt * 6)) & 0x3f));
814 }
815 }
816 }
817 }
818
819 if (buf && (len<n))
820 *buf = 0;
821
822 return len;
823 }
824
825 // ----------------------------------------------------------------------------
826 // UTF-16
827 // ----------------------------------------------------------------------------
828
829 #ifdef WORDS_BIGENDIAN
830 #define wxMBConvUTF16straight wxMBConvUTF16BE
831 #define wxMBConvUTF16swap wxMBConvUTF16LE
832 #else
833 #define wxMBConvUTF16swap wxMBConvUTF16BE
834 #define wxMBConvUTF16straight wxMBConvUTF16LE
835 #endif
836
837
838 #ifdef WC_UTF16
839
840 // copy 16bit MB to 16bit String
841 size_t wxMBConvUTF16straight::MB2WC(wchar_t *buf, const char *psz, size_t n) const
842 {
843 size_t len=0;
844
845 while (*(wxUint16*)psz && (!buf || len < n))
846 {
847 if (buf)
848 *buf++ = *(wxUint16*)psz;
849 len++;
850
851 psz += sizeof(wxUint16);
852 }
853 if (buf && len<n) *buf=0;
854
855 return len;
856 }
857
858
859 // copy 16bit String to 16bit MB
860 size_t wxMBConvUTF16straight::WC2MB(char *buf, const wchar_t *psz, size_t n) const
861 {
862 size_t len=0;
863
864 while (*psz && (!buf || len < n))
865 {
866 if (buf)
867 {
868 *(wxUint16*)buf = *psz;
869 buf += sizeof(wxUint16);
870 }
871 len += sizeof(wxUint16);
872 psz++;
873 }
874 if (buf && len<=n-sizeof(wxUint16)) *(wxUint16*)buf=0;
875
876 return len;
877 }
878
879
880 // swap 16bit MB to 16bit String
881 size_t wxMBConvUTF16swap::MB2WC(wchar_t *buf, const char *psz, size_t n) const
882 {
883 size_t len=0;
884
885 while (*(wxUint16*)psz && (!buf || len < n))
886 {
887 if (buf)
888 {
889 ((char *)buf)[0] = psz[1];
890 ((char *)buf)[1] = psz[0];
891 buf++;
892 }
893 len++;
894 psz += sizeof(wxUint16);
895 }
896 if (buf && len<n) *buf=0;
897
898 return len;
899 }
900
901
902 // swap 16bit MB to 16bit String
903 size_t wxMBConvUTF16swap::WC2MB(char *buf, const wchar_t *psz, size_t n) const
904 {
905 size_t len=0;
906
907 while (*psz && (!buf || len < n))
908 {
909 if (buf)
910 {
911 *buf++ = ((char*)psz)[1];
912 *buf++ = ((char*)psz)[0];
913 }
914 len += sizeof(wxUint16);
915 psz++;
916 }
917 if (buf && len<=n-sizeof(wxUint16)) *(wxUint16*)buf=0;
918
919 return len;
920 }
921
922
923 #else // WC_UTF16
924
925
926 // copy 16bit MB to 32bit String
927 size_t wxMBConvUTF16straight::MB2WC(wchar_t *buf, const char *psz, size_t n) const
928 {
929 size_t len=0;
930
931 while (*(wxUint16*)psz && (!buf || len < n))
932 {
933 wxUint32 cc;
934 size_t pa=decode_utf16((wxUint16*)psz, cc);
935 if (pa == (size_t)-1)
936 return pa;
937
938 if (buf)
939 *buf++ = cc;
940 len++;
941 psz += pa * sizeof(wxUint16);
942 }
943 if (buf && len<n) *buf=0;
944
945 return len;
946 }
947
948
949 // copy 32bit String to 16bit MB
950 size_t wxMBConvUTF16straight::WC2MB(char *buf, const wchar_t *psz, size_t n) const
951 {
952 size_t len=0;
953
954 while (*psz && (!buf || len < n))
955 {
956 wxUint16 cc[2];
957 size_t pa=encode_utf16(*psz, cc);
958
959 if (pa == (size_t)-1)
960 return pa;
961
962 if (buf)
963 {
964 *(wxUint16*)buf = cc[0];
965 buf += sizeof(wxUint16);
966 if (pa > 1)
967 {
968 *(wxUint16*)buf = cc[1];
969 buf += sizeof(wxUint16);
970 }
971 }
972
973 len += pa*sizeof(wxUint16);
974 psz++;
975 }
976 if (buf && len<=n-sizeof(wxUint16)) *(wxUint16*)buf=0;
977
978 return len;
979 }
980
981
982 // swap 16bit MB to 32bit String
983 size_t wxMBConvUTF16swap::MB2WC(wchar_t *buf, const char *psz, size_t n) const
984 {
985 size_t len=0;
986
987 while (*(wxUint16*)psz && (!buf || len < n))
988 {
989 wxUint32 cc;
990 char tmp[4];
991 tmp[0]=psz[1]; tmp[1]=psz[0];
992 tmp[2]=psz[3]; tmp[3]=psz[2];
993
994 size_t pa=decode_utf16((wxUint16*)tmp, cc);
995 if (pa == (size_t)-1)
996 return pa;
997
998 if (buf)
999 *buf++ = cc;
1000
1001 len++;
1002 psz += pa * sizeof(wxUint16);
1003 }
1004 if (buf && len<n) *buf=0;
1005
1006 return len;
1007 }
1008
1009
1010 // swap 32bit String to 16bit MB
1011 size_t wxMBConvUTF16swap::WC2MB(char *buf, const wchar_t *psz, size_t n) const
1012 {
1013 size_t len=0;
1014
1015 while (*psz && (!buf || len < n))
1016 {
1017 wxUint16 cc[2];
1018 size_t pa=encode_utf16(*psz, cc);
1019
1020 if (pa == (size_t)-1)
1021 return pa;
1022
1023 if (buf)
1024 {
1025 *buf++ = ((char*)cc)[1];
1026 *buf++ = ((char*)cc)[0];
1027 if (pa > 1)
1028 {
1029 *buf++ = ((char*)cc)[3];
1030 *buf++ = ((char*)cc)[2];
1031 }
1032 }
1033
1034 len += pa*sizeof(wxUint16);
1035 psz++;
1036 }
1037 if (buf && len<=n-sizeof(wxUint16)) *(wxUint16*)buf=0;
1038
1039 return len;
1040 }
1041
1042 #endif // WC_UTF16
1043
1044
1045 // ----------------------------------------------------------------------------
1046 // UTF-32
1047 // ----------------------------------------------------------------------------
1048
1049 #ifdef WORDS_BIGENDIAN
1050 #define wxMBConvUTF32straight wxMBConvUTF32BE
1051 #define wxMBConvUTF32swap wxMBConvUTF32LE
1052 #else
1053 #define wxMBConvUTF32swap wxMBConvUTF32BE
1054 #define wxMBConvUTF32straight wxMBConvUTF32LE
1055 #endif
1056
1057
1058 WXDLLIMPEXP_DATA_BASE(wxMBConvUTF32LE) wxConvUTF32LE;
1059 WXDLLIMPEXP_DATA_BASE(wxMBConvUTF32BE) wxConvUTF32BE;
1060
1061
1062 #ifdef WC_UTF16
1063
1064 // copy 32bit MB to 16bit String
1065 size_t wxMBConvUTF32straight::MB2WC(wchar_t *buf, const char *psz, size_t n) const
1066 {
1067 size_t len=0;
1068
1069 while (*(wxUint32*)psz && (!buf || len < n))
1070 {
1071 wxUint16 cc[2];
1072
1073 size_t pa=encode_utf16(*(wxUint32*)psz, cc);
1074 if (pa == (size_t)-1)
1075 return pa;
1076
1077 if (buf)
1078 {
1079 *buf++ = cc[0];
1080 if (pa > 1)
1081 *buf++ = cc[1];
1082 }
1083 len += pa;
1084 psz += sizeof(wxUint32);
1085 }
1086 if (buf && len<n) *buf=0;
1087
1088 return len;
1089 }
1090
1091
1092 // copy 16bit String to 32bit MB
1093 size_t wxMBConvUTF32straight::WC2MB(char *buf, const wchar_t *psz, size_t n) const
1094 {
1095 size_t len=0;
1096
1097 while (*psz && (!buf || len < n))
1098 {
1099 wxUint32 cc;
1100
1101 // cast is ok for WC_UTF16
1102 size_t pa = decode_utf16((const wxUint16 *)psz, cc);
1103 if (pa == (size_t)-1)
1104 return pa;
1105
1106 if (buf)
1107 {
1108 *(wxUint32*)buf = cc;
1109 buf += sizeof(wxUint32);
1110 }
1111 len += sizeof(wxUint32);
1112 psz += pa;
1113 }
1114
1115 if (buf && len<=n-sizeof(wxUint32))
1116 *(wxUint32*)buf=0;
1117
1118 return len;
1119 }
1120
1121
1122
1123 // swap 32bit MB to 16bit String
1124 size_t wxMBConvUTF32swap::MB2WC(wchar_t *buf, const char *psz, size_t n) const
1125 {
1126 size_t len=0;
1127
1128 while (*(wxUint32*)psz && (!buf || len < n))
1129 {
1130 char tmp[4];
1131 tmp[0] = psz[3]; tmp[1] = psz[2];
1132 tmp[2] = psz[1]; tmp[3] = psz[0];
1133
1134
1135 wxUint16 cc[2];
1136
1137 size_t pa=encode_utf16(*(wxUint32*)tmp, cc);
1138 if (pa == (size_t)-1)
1139 return pa;
1140
1141 if (buf)
1142 {
1143 *buf++ = cc[0];
1144 if (pa > 1)
1145 *buf++ = cc[1];
1146 }
1147 len += pa;
1148 psz += sizeof(wxUint32);
1149 }
1150
1151 if (buf && len<n)
1152 *buf=0;
1153
1154 return len;
1155 }
1156
1157
1158 // swap 16bit String to 32bit MB
1159 size_t wxMBConvUTF32swap::WC2MB(char *buf, const wchar_t *psz, size_t n) const
1160 {
1161 size_t len=0;
1162
1163 while (*psz && (!buf || len < n))
1164 {
1165 char cc[4];
1166
1167 // cast is ok for WC_UTF16
1168 size_t pa=decode_utf16((const wxUint16 *)psz, *(wxUint32*)cc);
1169 if (pa == (size_t)-1)
1170 return pa;
1171
1172 if (buf)
1173 {
1174 *buf++ = cc[3];
1175 *buf++ = cc[2];
1176 *buf++ = cc[1];
1177 *buf++ = cc[0];
1178 }
1179 len += sizeof(wxUint32);
1180 psz += pa;
1181 }
1182
1183 if (buf && len<=n-sizeof(wxUint32))
1184 *(wxUint32*)buf=0;
1185
1186 return len;
1187 }
1188
1189 #else // WC_UTF16
1190
1191
1192 // copy 32bit MB to 32bit String
1193 size_t wxMBConvUTF32straight::MB2WC(wchar_t *buf, const char *psz, size_t n) const
1194 {
1195 size_t len=0;
1196
1197 while (*(wxUint32*)psz && (!buf || len < n))
1198 {
1199 if (buf)
1200 *buf++ = *(wxUint32*)psz;
1201 len++;
1202 psz += sizeof(wxUint32);
1203 }
1204
1205 if (buf && len<n)
1206 *buf=0;
1207
1208 return len;
1209 }
1210
1211
1212 // copy 32bit String to 32bit MB
1213 size_t wxMBConvUTF32straight::WC2MB(char *buf, const wchar_t *psz, size_t n) const
1214 {
1215 size_t len=0;
1216
1217 while (*psz && (!buf || len < n))
1218 {
1219 if (buf)
1220 {
1221 *(wxUint32*)buf = *psz;
1222 buf += sizeof(wxUint32);
1223 }
1224
1225 len += sizeof(wxUint32);
1226 psz++;
1227 }
1228
1229 if (buf && len<=n-sizeof(wxUint32))
1230 *(wxUint32*)buf=0;
1231
1232 return len;
1233 }
1234
1235
1236 // swap 32bit MB to 32bit String
1237 size_t wxMBConvUTF32swap::MB2WC(wchar_t *buf, const char *psz, size_t n) const
1238 {
1239 size_t len=0;
1240
1241 while (*(wxUint32*)psz && (!buf || len < n))
1242 {
1243 if (buf)
1244 {
1245 ((char *)buf)[0] = psz[3];
1246 ((char *)buf)[1] = psz[2];
1247 ((char *)buf)[2] = psz[1];
1248 ((char *)buf)[3] = psz[0];
1249 buf++;
1250 }
1251 len++;
1252 psz += sizeof(wxUint32);
1253 }
1254
1255 if (buf && len<n)
1256 *buf=0;
1257
1258 return len;
1259 }
1260
1261
1262 // swap 32bit String to 32bit MB
1263 size_t wxMBConvUTF32swap::WC2MB(char *buf, const wchar_t *psz, size_t n) const
1264 {
1265 size_t len=0;
1266
1267 while (*psz && (!buf || len < n))
1268 {
1269 if (buf)
1270 {
1271 *buf++ = ((char *)psz)[3];
1272 *buf++ = ((char *)psz)[2];
1273 *buf++ = ((char *)psz)[1];
1274 *buf++ = ((char *)psz)[0];
1275 }
1276 len += sizeof(wxUint32);
1277 psz++;
1278 }
1279
1280 if (buf && len<=n-sizeof(wxUint32))
1281 *(wxUint32*)buf=0;
1282
1283 return len;
1284 }
1285
1286
1287 #endif // WC_UTF16
1288
1289
1290 // ============================================================================
1291 // The classes doing conversion using the iconv_xxx() functions
1292 // ============================================================================
1293
1294 #ifdef HAVE_ICONV
1295
1296 // VS: glibc 2.1.3 is broken in that iconv() conversion to/from UCS4 fails with
1297 // E2BIG if output buffer is _exactly_ as big as needed. Such case is
1298 // (unless there's yet another bug in glibc) the only case when iconv()
1299 // returns with (size_t)-1 (which means error) and says there are 0 bytes
1300 // left in the input buffer -- when _real_ error occurs,
1301 // bytes-left-in-input buffer is non-zero. Hence, this alternative test for
1302 // iconv() failure.
1303 // [This bug does not appear in glibc 2.2.]
1304 #if defined(__GLIBC__) && __GLIBC__ == 2 && __GLIBC_MINOR__ <= 1
1305 #define ICONV_FAILED(cres, bufLeft) ((cres == (size_t)-1) && \
1306 (errno != E2BIG || bufLeft != 0))
1307 #else
1308 #define ICONV_FAILED(cres, bufLeft) (cres == (size_t)-1)
1309 #endif
1310
1311 #define ICONV_CHAR_CAST(x) ((ICONV_CONST char **)(x))
1312
1313 // ----------------------------------------------------------------------------
1314 // wxMBConv_iconv: encapsulates an iconv character set
1315 // ----------------------------------------------------------------------------
1316
1317 class wxMBConv_iconv : public wxMBConv
1318 {
1319 public:
1320 wxMBConv_iconv(const wxChar *name);
1321 virtual ~wxMBConv_iconv();
1322
1323 virtual size_t MB2WC(wchar_t *buf, const char *psz, size_t n) const;
1324 virtual size_t WC2MB(char *buf, const wchar_t *psz, size_t n) const;
1325
1326 bool IsOk() const
1327 { return (m2w != (iconv_t)-1) && (w2m != (iconv_t)-1); }
1328
1329 protected:
1330 // the iconv handlers used to translate from multibyte to wide char and in
1331 // the other direction
1332 iconv_t m2w,
1333 w2m;
1334 #if wxUSE_THREADS
1335 // guards access to m2w and w2m objects
1336 wxMutex m_iconvMutex;
1337 #endif
1338
1339 private:
1340 // the name (for iconv_open()) of a wide char charset -- if none is
1341 // available on this machine, it will remain NULL
1342 static const char *ms_wcCharsetName;
1343
1344 // true if the wide char encoding we use (i.e. ms_wcCharsetName) has
1345 // different endian-ness than the native one
1346 static bool ms_wcNeedsSwap;
1347 };
1348
1349 // make the constructor available for unit testing
1350 WXDLLIMPEXP_BASE wxMBConv* new_wxMBConv_iconv( const wxChar* name )
1351 {
1352 wxMBConv_iconv* result = new wxMBConv_iconv( name );
1353 if ( !result->IsOk() )
1354 {
1355 delete result;
1356 return 0;
1357 }
1358 return result;
1359 }
1360
1361 const char *wxMBConv_iconv::ms_wcCharsetName = NULL;
1362 bool wxMBConv_iconv::ms_wcNeedsSwap = false;
1363
1364 wxMBConv_iconv::wxMBConv_iconv(const wxChar *name)
1365 {
1366 // Do it the hard way
1367 char cname[100];
1368 for (size_t i = 0; i < wxStrlen(name)+1; i++)
1369 cname[i] = (char) name[i];
1370
1371 // check for charset that represents wchar_t:
1372 if (ms_wcCharsetName == NULL)
1373 {
1374 ms_wcNeedsSwap = false;
1375
1376 // try charset with explicit bytesex info (e.g. "UCS-4LE"):
1377 ms_wcCharsetName = WC_NAME_BEST;
1378 m2w = iconv_open(ms_wcCharsetName, cname);
1379
1380 if (m2w == (iconv_t)-1)
1381 {
1382 // try charset w/o bytesex info (e.g. "UCS4")
1383 // and check for bytesex ourselves:
1384 ms_wcCharsetName = WC_NAME;
1385 m2w = iconv_open(ms_wcCharsetName, cname);
1386
1387 // last bet, try if it knows WCHAR_T pseudo-charset
1388 if (m2w == (iconv_t)-1)
1389 {
1390 ms_wcCharsetName = "WCHAR_T";
1391 m2w = iconv_open(ms_wcCharsetName, cname);
1392 }
1393
1394 if (m2w != (iconv_t)-1)
1395 {
1396 char buf[2], *bufPtr;
1397 wchar_t wbuf[2], *wbufPtr;
1398 size_t insz, outsz;
1399 size_t res;
1400
1401 buf[0] = 'A';
1402 buf[1] = 0;
1403 wbuf[0] = 0;
1404 insz = 2;
1405 outsz = SIZEOF_WCHAR_T * 2;
1406 wbufPtr = wbuf;
1407 bufPtr = buf;
1408
1409 res = iconv(m2w, ICONV_CHAR_CAST(&bufPtr), &insz,
1410 (char**)&wbufPtr, &outsz);
1411
1412 if (ICONV_FAILED(res, insz))
1413 {
1414 ms_wcCharsetName = NULL;
1415 wxLogLastError(wxT("iconv"));
1416 wxLogError(_("Conversion to charset '%s' doesn't work."), name);
1417 }
1418 else
1419 {
1420 ms_wcNeedsSwap = wbuf[0] != (wchar_t)buf[0];
1421 }
1422 }
1423 else
1424 {
1425 ms_wcCharsetName = NULL;
1426
1427 // VS: we must not output an error here, since wxWidgets will safely
1428 // fall back to using wxEncodingConverter.
1429 wxLogTrace(wxT("strconv"), wxT("Impossible to convert to/from charset '%s' with iconv, falling back to wxEncodingConverter."), name);
1430 //wxLogError(
1431 }
1432 }
1433 wxLogTrace(wxT("strconv"), wxT("wchar_t charset is '%s', needs swap: %i"), ms_wcCharsetName, ms_wcNeedsSwap);
1434 }
1435 else // we already have ms_wcCharsetName
1436 {
1437 m2w = iconv_open(ms_wcCharsetName, cname);
1438 }
1439
1440 // NB: don't ever pass NULL to iconv_open(), it may crash!
1441 if ( ms_wcCharsetName )
1442 {
1443 w2m = iconv_open( cname, ms_wcCharsetName);
1444 }
1445 else
1446 {
1447 w2m = (iconv_t)-1;
1448 }
1449 }
1450
1451 wxMBConv_iconv::~wxMBConv_iconv()
1452 {
1453 if ( m2w != (iconv_t)-1 )
1454 iconv_close(m2w);
1455 if ( w2m != (iconv_t)-1 )
1456 iconv_close(w2m);
1457 }
1458
1459 size_t wxMBConv_iconv::MB2WC(wchar_t *buf, const char *psz, size_t n) const
1460 {
1461 #if wxUSE_THREADS
1462 // NB: iconv() is MT-safe, but each thread must use it's own iconv_t handle.
1463 // Unfortunately there is a couple of global wxCSConv objects such as
1464 // wxConvLocal that are used all over wx code, so we have to make sure
1465 // the handle is used by at most one thread at the time. Otherwise
1466 // only a few wx classes would be safe to use from non-main threads
1467 // as MB<->WC conversion would fail "randomly".
1468 wxMutexLocker lock(wxConstCast(this, wxMBConv_iconv)->m_iconvMutex);
1469 #endif
1470
1471 size_t inbuf = strlen(psz);
1472 size_t outbuf = n * SIZEOF_WCHAR_T;
1473 size_t res, cres;
1474 // VS: Use these instead of psz, buf because iconv() modifies its arguments:
1475 wchar_t *bufPtr = buf;
1476 const char *pszPtr = psz;
1477
1478 if (buf)
1479 {
1480 // have destination buffer, convert there
1481 cres = iconv(m2w,
1482 ICONV_CHAR_CAST(&pszPtr), &inbuf,
1483 (char**)&bufPtr, &outbuf);
1484 res = n - (outbuf / SIZEOF_WCHAR_T);
1485
1486 if (ms_wcNeedsSwap)
1487 {
1488 // convert to native endianness
1489 WC_BSWAP(buf /* _not_ bufPtr */, res)
1490 }
1491
1492 // NB: iconv was given only strlen(psz) characters on input, and so
1493 // it couldn't convert the trailing zero. Let's do it ourselves
1494 // if there's some room left for it in the output buffer.
1495 if (res < n)
1496 buf[res] = 0;
1497 }
1498 else
1499 {
1500 // no destination buffer... convert using temp buffer
1501 // to calculate destination buffer requirement
1502 wchar_t tbuf[8];
1503 res = 0;
1504 do {
1505 bufPtr = tbuf;
1506 outbuf = 8*SIZEOF_WCHAR_T;
1507
1508 cres = iconv(m2w,
1509 ICONV_CHAR_CAST(&pszPtr), &inbuf,
1510 (char**)&bufPtr, &outbuf );
1511
1512 res += 8-(outbuf/SIZEOF_WCHAR_T);
1513 } while ((cres==(size_t)-1) && (errno==E2BIG));
1514 }
1515
1516 if (ICONV_FAILED(cres, inbuf))
1517 {
1518 //VS: it is ok if iconv fails, hence trace only
1519 wxLogTrace(wxT("strconv"), wxT("iconv failed: %s"), wxSysErrorMsg(wxSysErrorCode()));
1520 return (size_t)-1;
1521 }
1522
1523 return res;
1524 }
1525
1526 size_t wxMBConv_iconv::WC2MB(char *buf, const wchar_t *psz, size_t n) const
1527 {
1528 #if wxUSE_THREADS
1529 // NB: explained in MB2WC
1530 wxMutexLocker lock(wxConstCast(this, wxMBConv_iconv)->m_iconvMutex);
1531 #endif
1532
1533 size_t inbuf = wxWcslen(psz) * SIZEOF_WCHAR_T;
1534 size_t outbuf = n;
1535 size_t res, cres;
1536
1537 wchar_t *tmpbuf = 0;
1538
1539 if (ms_wcNeedsSwap)
1540 {
1541 // need to copy to temp buffer to switch endianness
1542 // this absolutely doesn't rock!
1543 // (no, doing WC_BSWAP twice on the original buffer won't help, as it
1544 // could be in read-only memory, or be accessed in some other thread)
1545 tmpbuf=(wchar_t*)malloc((inbuf+1)*SIZEOF_WCHAR_T);
1546 memcpy(tmpbuf,psz,(inbuf+1)*SIZEOF_WCHAR_T);
1547 WC_BSWAP(tmpbuf, inbuf)
1548 psz=tmpbuf;
1549 }
1550
1551 if (buf)
1552 {
1553 // have destination buffer, convert there
1554 cres = iconv( w2m, ICONV_CHAR_CAST(&psz), &inbuf, &buf, &outbuf );
1555
1556 res = n-outbuf;
1557
1558 // NB: iconv was given only wcslen(psz) characters on input, and so
1559 // it couldn't convert the trailing zero. Let's do it ourselves
1560 // if there's some room left for it in the output buffer.
1561 if (res < n)
1562 buf[0] = 0;
1563 }
1564 else
1565 {
1566 // no destination buffer... convert using temp buffer
1567 // to calculate destination buffer requirement
1568 char tbuf[16];
1569 res = 0;
1570 do {
1571 buf = tbuf; outbuf = 16;
1572
1573 cres = iconv( w2m, ICONV_CHAR_CAST(&psz), &inbuf, &buf, &outbuf );
1574
1575 res += 16 - outbuf;
1576 } while ((cres==(size_t)-1) && (errno==E2BIG));
1577 }
1578
1579 if (ms_wcNeedsSwap)
1580 {
1581 free(tmpbuf);
1582 }
1583
1584 if (ICONV_FAILED(cres, inbuf))
1585 {
1586 //VS: it is ok if iconv fails, hence trace only
1587 wxLogTrace(wxT("strconv"), wxT("iconv failed: %s"), wxSysErrorMsg(wxSysErrorCode()));
1588 return (size_t)-1;
1589 }
1590
1591 return res;
1592 }
1593
1594 #endif // HAVE_ICONV
1595
1596
1597 // ============================================================================
1598 // Win32 conversion classes
1599 // ============================================================================
1600
1601 #ifdef wxHAVE_WIN32_MB2WC
1602
1603 // from utils.cpp
1604 #if wxUSE_FONTMAP
1605 extern WXDLLIMPEXP_BASE long wxCharsetToCodepage(const wxChar *charset);
1606 extern WXDLLIMPEXP_BASE long wxEncodingToCodepage(wxFontEncoding encoding);
1607 #endif
1608
1609 class wxMBConv_win32 : public wxMBConv
1610 {
1611 public:
1612 wxMBConv_win32()
1613 {
1614 m_CodePage = CP_ACP;
1615 }
1616
1617 #if wxUSE_FONTMAP
1618 wxMBConv_win32(const wxChar* name)
1619 {
1620 m_CodePage = wxCharsetToCodepage(name);
1621 }
1622
1623 wxMBConv_win32(wxFontEncoding encoding)
1624 {
1625 m_CodePage = wxEncodingToCodepage(encoding);
1626 }
1627 #endif
1628
1629 size_t MB2WC(wchar_t *buf, const char *psz, size_t n) const
1630 {
1631 // note that we have to use MB_ERR_INVALID_CHARS flag as it without it
1632 // the behaviour is not compatible with the Unix version (using iconv)
1633 // and break the library itself, e.g. wxTextInputStream::NextChar()
1634 // wouldn't work if reading an incomplete MB char didn't result in an
1635 // error
1636 //
1637 // note however that using MB_ERR_INVALID_CHARS with CP_UTF7 results in
1638 // an error (tested under Windows Server 2003) and apparently it is
1639 // done on purpose, i.e. the function accepts any input in this case
1640 // and although I'd prefer to return error on ill-formed output, our
1641 // own wxMBConvUTF7 doesn't detect errors (e.g. lone "+" which is
1642 // explicitly ill-formed according to RFC 2152) neither so we don't
1643 // even have any fallback here...
1644 int flags = m_CodePage == CP_UTF7 ? 0 : MB_ERR_INVALID_CHARS;
1645
1646 const size_t len = ::MultiByteToWideChar
1647 (
1648 m_CodePage, // code page
1649 flags, // flags: fall on error
1650 psz, // input string
1651 -1, // its length (NUL-terminated)
1652 buf, // output string
1653 buf ? n : 0 // size of output buffer
1654 );
1655
1656 // note that it returns count of written chars for buf != NULL and size
1657 // of the needed buffer for buf == NULL so in either case the length of
1658 // the string (which never includes the terminating NUL) is one less
1659 return len ? len - 1 : (size_t)-1;
1660 }
1661
1662 size_t WC2MB(char *buf, const wchar_t *pwz, size_t n) const
1663 {
1664 /*
1665 we have a problem here: by default, WideCharToMultiByte() may
1666 replace characters unrepresentable in the target code page with bad
1667 quality approximations such as turning "1/2" symbol (U+00BD) into
1668 "1" for the code pages which don't have it and we, obviously, want
1669 to avoid this at any price
1670
1671 the trouble is that this function does it _silently_, i.e. it won't
1672 even tell us whether it did or not... Win98/2000 and higher provide
1673 WC_NO_BEST_FIT_CHARS but it doesn't work for the older systems and
1674 we have to resort to a round trip, i.e. check that converting back
1675 results in the same string -- this is, of course, expensive but
1676 otherwise we simply can't be sure to not garble the data.
1677 */
1678
1679 // determine if we can rely on WC_NO_BEST_FIT_CHARS: according to MSDN
1680 // it doesn't work with CJK encodings (which we test for rather roughly
1681 // here...) nor with UTF-7/8 nor, of course, with Windows versions not
1682 // supporting it
1683 BOOL usedDef wxDUMMY_INITIALIZE(false);
1684 BOOL *pUsedDef;
1685 int flags;
1686 if ( CanUseNoBestFit() && m_CodePage < 50000 )
1687 {
1688 // it's our lucky day
1689 flags = WC_NO_BEST_FIT_CHARS;
1690 pUsedDef = &usedDef;
1691 }
1692 else // old system or unsupported encoding
1693 {
1694 flags = 0;
1695 pUsedDef = NULL;
1696 }
1697
1698 const size_t len = ::WideCharToMultiByte
1699 (
1700 m_CodePage, // code page
1701 flags, // either none or no best fit
1702 pwz, // input string
1703 -1, // it is (wide) NUL-terminated
1704 buf, // output buffer
1705 buf ? n : 0, // and its size
1706 NULL, // default "replacement" char
1707 pUsedDef // [out] was it used?
1708 );
1709
1710 if ( !len )
1711 {
1712 // function totally failed
1713 return (size_t)-1;
1714 }
1715
1716 // if we were really converting, check if we succeeded
1717 if ( buf )
1718 {
1719 if ( flags )
1720 {
1721 // check if the conversion failed, i.e. if any replacements
1722 // were done
1723 if ( usedDef )
1724 return (size_t)-1;
1725 }
1726 else // we must resort to double tripping...
1727 {
1728 wxWCharBuffer wcBuf(n);
1729 if ( MB2WC(wcBuf.data(), buf, n) == (size_t)-1 ||
1730 wcscmp(wcBuf, pwz) != 0 )
1731 {
1732 // we didn't obtain the same thing we started from, hence
1733 // the conversion was lossy and we consider that it failed
1734 return (size_t)-1;
1735 }
1736 }
1737 }
1738
1739 // see the comment above for the reason of "len - 1"
1740 return len - 1;
1741 }
1742
1743 bool IsOk() const { return m_CodePage != -1; }
1744
1745 private:
1746 static bool CanUseNoBestFit()
1747 {
1748 static int s_isWin98Or2k = -1;
1749
1750 if ( s_isWin98Or2k == -1 )
1751 {
1752 int verMaj, verMin;
1753 switch ( wxGetOsVersion(&verMaj, &verMin) )
1754 {
1755 case wxWIN95:
1756 s_isWin98Or2k = verMaj >= 4 && verMin >= 10;
1757 break;
1758
1759 case wxWINDOWS_NT:
1760 s_isWin98Or2k = verMaj >= 5;
1761 break;
1762
1763 default:
1764 // unknown, be conseravtive by default
1765 s_isWin98Or2k = 0;
1766 }
1767
1768 wxASSERT_MSG( s_isWin98Or2k != -1, _T("should be set above") );
1769 }
1770
1771 return s_isWin98Or2k == 1;
1772 }
1773
1774 long m_CodePage;
1775 };
1776
1777 #endif // wxHAVE_WIN32_MB2WC
1778
1779 // ============================================================================
1780 // Cocoa conversion classes
1781 // ============================================================================
1782
1783 #if defined(__WXCOCOA__)
1784
1785 // RN: There is no UTF-32 support in either Core Foundation or
1786 // Cocoa. Strangely enough, internally Core Foundation uses
1787 // UTF 32 internally quite a bit - its just not public (yet).
1788
1789 #include <CoreFoundation/CFString.h>
1790 #include <CoreFoundation/CFStringEncodingExt.h>
1791
1792 CFStringEncoding wxCFStringEncFromFontEnc(wxFontEncoding encoding)
1793 {
1794 CFStringEncoding enc = kCFStringEncodingInvalidId ;
1795 if ( encoding == wxFONTENCODING_DEFAULT )
1796 {
1797 enc = CFStringGetSystemEncoding();
1798 }
1799 else switch( encoding)
1800 {
1801 case wxFONTENCODING_ISO8859_1 :
1802 enc = kCFStringEncodingISOLatin1 ;
1803 break ;
1804 case wxFONTENCODING_ISO8859_2 :
1805 enc = kCFStringEncodingISOLatin2;
1806 break ;
1807 case wxFONTENCODING_ISO8859_3 :
1808 enc = kCFStringEncodingISOLatin3 ;
1809 break ;
1810 case wxFONTENCODING_ISO8859_4 :
1811 enc = kCFStringEncodingISOLatin4;
1812 break ;
1813 case wxFONTENCODING_ISO8859_5 :
1814 enc = kCFStringEncodingISOLatinCyrillic;
1815 break ;
1816 case wxFONTENCODING_ISO8859_6 :
1817 enc = kCFStringEncodingISOLatinArabic;
1818 break ;
1819 case wxFONTENCODING_ISO8859_7 :
1820 enc = kCFStringEncodingISOLatinGreek;
1821 break ;
1822 case wxFONTENCODING_ISO8859_8 :
1823 enc = kCFStringEncodingISOLatinHebrew;
1824 break ;
1825 case wxFONTENCODING_ISO8859_9 :
1826 enc = kCFStringEncodingISOLatin5;
1827 break ;
1828 case wxFONTENCODING_ISO8859_10 :
1829 enc = kCFStringEncodingISOLatin6;
1830 break ;
1831 case wxFONTENCODING_ISO8859_11 :
1832 enc = kCFStringEncodingISOLatinThai;
1833 break ;
1834 case wxFONTENCODING_ISO8859_13 :
1835 enc = kCFStringEncodingISOLatin7;
1836 break ;
1837 case wxFONTENCODING_ISO8859_14 :
1838 enc = kCFStringEncodingISOLatin8;
1839 break ;
1840 case wxFONTENCODING_ISO8859_15 :
1841 enc = kCFStringEncodingISOLatin9;
1842 break ;
1843
1844 case wxFONTENCODING_KOI8 :
1845 enc = kCFStringEncodingKOI8_R;
1846 break ;
1847 case wxFONTENCODING_ALTERNATIVE : // MS-DOS CP866
1848 enc = kCFStringEncodingDOSRussian;
1849 break ;
1850
1851 // case wxFONTENCODING_BULGARIAN :
1852 // enc = ;
1853 // break ;
1854
1855 case wxFONTENCODING_CP437 :
1856 enc =kCFStringEncodingDOSLatinUS ;
1857 break ;
1858 case wxFONTENCODING_CP850 :
1859 enc = kCFStringEncodingDOSLatin1;
1860 break ;
1861 case wxFONTENCODING_CP852 :
1862 enc = kCFStringEncodingDOSLatin2;
1863 break ;
1864 case wxFONTENCODING_CP855 :
1865 enc = kCFStringEncodingDOSCyrillic;
1866 break ;
1867 case wxFONTENCODING_CP866 :
1868 enc =kCFStringEncodingDOSRussian ;
1869 break ;
1870 case wxFONTENCODING_CP874 :
1871 enc = kCFStringEncodingDOSThai;
1872 break ;
1873 case wxFONTENCODING_CP932 :
1874 enc = kCFStringEncodingDOSJapanese;
1875 break ;
1876 case wxFONTENCODING_CP936 :
1877 enc =kCFStringEncodingDOSChineseSimplif ;
1878 break ;
1879 case wxFONTENCODING_CP949 :
1880 enc = kCFStringEncodingDOSKorean;
1881 break ;
1882 case wxFONTENCODING_CP950 :
1883 enc = kCFStringEncodingDOSChineseTrad;
1884 break ;
1885 case wxFONTENCODING_CP1250 :
1886 enc = kCFStringEncodingWindowsLatin2;
1887 break ;
1888 case wxFONTENCODING_CP1251 :
1889 enc =kCFStringEncodingWindowsCyrillic ;
1890 break ;
1891 case wxFONTENCODING_CP1252 :
1892 enc =kCFStringEncodingWindowsLatin1 ;
1893 break ;
1894 case wxFONTENCODING_CP1253 :
1895 enc = kCFStringEncodingWindowsGreek;
1896 break ;
1897 case wxFONTENCODING_CP1254 :
1898 enc = kCFStringEncodingWindowsLatin5;
1899 break ;
1900 case wxFONTENCODING_CP1255 :
1901 enc =kCFStringEncodingWindowsHebrew ;
1902 break ;
1903 case wxFONTENCODING_CP1256 :
1904 enc =kCFStringEncodingWindowsArabic ;
1905 break ;
1906 case wxFONTENCODING_CP1257 :
1907 enc = kCFStringEncodingWindowsBalticRim;
1908 break ;
1909 // This only really encodes to UTF7 (if that) evidently
1910 // case wxFONTENCODING_UTF7 :
1911 // enc = kCFStringEncodingNonLossyASCII ;
1912 // break ;
1913 case wxFONTENCODING_UTF8 :
1914 enc = kCFStringEncodingUTF8 ;
1915 break ;
1916 case wxFONTENCODING_EUC_JP :
1917 enc = kCFStringEncodingEUC_JP;
1918 break ;
1919 case wxFONTENCODING_UTF16 :
1920 enc = kCFStringEncodingUnicode ;
1921 break ;
1922 case wxFONTENCODING_MACROMAN :
1923 enc = kCFStringEncodingMacRoman ;
1924 break ;
1925 case wxFONTENCODING_MACJAPANESE :
1926 enc = kCFStringEncodingMacJapanese ;
1927 break ;
1928 case wxFONTENCODING_MACCHINESETRAD :
1929 enc = kCFStringEncodingMacChineseTrad ;
1930 break ;
1931 case wxFONTENCODING_MACKOREAN :
1932 enc = kCFStringEncodingMacKorean ;
1933 break ;
1934 case wxFONTENCODING_MACARABIC :
1935 enc = kCFStringEncodingMacArabic ;
1936 break ;
1937 case wxFONTENCODING_MACHEBREW :
1938 enc = kCFStringEncodingMacHebrew ;
1939 break ;
1940 case wxFONTENCODING_MACGREEK :
1941 enc = kCFStringEncodingMacGreek ;
1942 break ;
1943 case wxFONTENCODING_MACCYRILLIC :
1944 enc = kCFStringEncodingMacCyrillic ;
1945 break ;
1946 case wxFONTENCODING_MACDEVANAGARI :
1947 enc = kCFStringEncodingMacDevanagari ;
1948 break ;
1949 case wxFONTENCODING_MACGURMUKHI :
1950 enc = kCFStringEncodingMacGurmukhi ;
1951 break ;
1952 case wxFONTENCODING_MACGUJARATI :
1953 enc = kCFStringEncodingMacGujarati ;
1954 break ;
1955 case wxFONTENCODING_MACORIYA :
1956 enc = kCFStringEncodingMacOriya ;
1957 break ;
1958 case wxFONTENCODING_MACBENGALI :
1959 enc = kCFStringEncodingMacBengali ;
1960 break ;
1961 case wxFONTENCODING_MACTAMIL :
1962 enc = kCFStringEncodingMacTamil ;
1963 break ;
1964 case wxFONTENCODING_MACTELUGU :
1965 enc = kCFStringEncodingMacTelugu ;
1966 break ;
1967 case wxFONTENCODING_MACKANNADA :
1968 enc = kCFStringEncodingMacKannada ;
1969 break ;
1970 case wxFONTENCODING_MACMALAJALAM :
1971 enc = kCFStringEncodingMacMalayalam ;
1972 break ;
1973 case wxFONTENCODING_MACSINHALESE :
1974 enc = kCFStringEncodingMacSinhalese ;
1975 break ;
1976 case wxFONTENCODING_MACBURMESE :
1977 enc = kCFStringEncodingMacBurmese ;
1978 break ;
1979 case wxFONTENCODING_MACKHMER :
1980 enc = kCFStringEncodingMacKhmer ;
1981 break ;
1982 case wxFONTENCODING_MACTHAI :
1983 enc = kCFStringEncodingMacThai ;
1984 break ;
1985 case wxFONTENCODING_MACLAOTIAN :
1986 enc = kCFStringEncodingMacLaotian ;
1987 break ;
1988 case wxFONTENCODING_MACGEORGIAN :
1989 enc = kCFStringEncodingMacGeorgian ;
1990 break ;
1991 case wxFONTENCODING_MACARMENIAN :
1992 enc = kCFStringEncodingMacArmenian ;
1993 break ;
1994 case wxFONTENCODING_MACCHINESESIMP :
1995 enc = kCFStringEncodingMacChineseSimp ;
1996 break ;
1997 case wxFONTENCODING_MACTIBETAN :
1998 enc = kCFStringEncodingMacTibetan ;
1999 break ;
2000 case wxFONTENCODING_MACMONGOLIAN :
2001 enc = kCFStringEncodingMacMongolian ;
2002 break ;
2003 case wxFONTENCODING_MACETHIOPIC :
2004 enc = kCFStringEncodingMacEthiopic ;
2005 break ;
2006 case wxFONTENCODING_MACCENTRALEUR :
2007 enc = kCFStringEncodingMacCentralEurRoman ;
2008 break ;
2009 case wxFONTENCODING_MACVIATNAMESE :
2010 enc = kCFStringEncodingMacVietnamese ;
2011 break ;
2012 case wxFONTENCODING_MACARABICEXT :
2013 enc = kCFStringEncodingMacExtArabic ;
2014 break ;
2015 case wxFONTENCODING_MACSYMBOL :
2016 enc = kCFStringEncodingMacSymbol ;
2017 break ;
2018 case wxFONTENCODING_MACDINGBATS :
2019 enc = kCFStringEncodingMacDingbats ;
2020 break ;
2021 case wxFONTENCODING_MACTURKISH :
2022 enc = kCFStringEncodingMacTurkish ;
2023 break ;
2024 case wxFONTENCODING_MACCROATIAN :
2025 enc = kCFStringEncodingMacCroatian ;
2026 break ;
2027 case wxFONTENCODING_MACICELANDIC :
2028 enc = kCFStringEncodingMacIcelandic ;
2029 break ;
2030 case wxFONTENCODING_MACROMANIAN :
2031 enc = kCFStringEncodingMacRomanian ;
2032 break ;
2033 case wxFONTENCODING_MACCELTIC :
2034 enc = kCFStringEncodingMacCeltic ;
2035 break ;
2036 case wxFONTENCODING_MACGAELIC :
2037 enc = kCFStringEncodingMacGaelic ;
2038 break ;
2039 // case wxFONTENCODING_MACKEYBOARD :
2040 // enc = kCFStringEncodingMacKeyboardGlyphs ;
2041 // break ;
2042 default :
2043 // because gcc is picky
2044 break ;
2045 } ;
2046 return enc ;
2047 }
2048
2049 class wxMBConv_cocoa : public wxMBConv
2050 {
2051 public:
2052 wxMBConv_cocoa()
2053 {
2054 Init(CFStringGetSystemEncoding()) ;
2055 }
2056
2057 #if wxUSE_FONTMAP
2058 wxMBConv_cocoa(const wxChar* name)
2059 {
2060 Init( wxCFStringEncFromFontEnc(wxFontMapperBase::Get()->CharsetToEncoding(name, false) ) ) ;
2061 }
2062 #endif
2063
2064 wxMBConv_cocoa(wxFontEncoding encoding)
2065 {
2066 Init( wxCFStringEncFromFontEnc(encoding) );
2067 }
2068
2069 ~wxMBConv_cocoa()
2070 {
2071 }
2072
2073 void Init( CFStringEncoding encoding)
2074 {
2075 m_encoding = encoding ;
2076 }
2077
2078 size_t MB2WC(wchar_t * szOut, const char * szUnConv, size_t nOutSize) const
2079 {
2080 wxASSERT(szUnConv);
2081
2082 CFStringRef theString = CFStringCreateWithBytes (
2083 NULL, //the allocator
2084 (const UInt8*)szUnConv,
2085 strlen(szUnConv),
2086 m_encoding,
2087 false //no BOM/external representation
2088 );
2089
2090 wxASSERT(theString);
2091
2092 size_t nOutLength = CFStringGetLength(theString);
2093
2094 if (szOut == NULL)
2095 {
2096 CFRelease(theString);
2097 return nOutLength;
2098 }
2099
2100 CFRange theRange = { 0, nOutSize };
2101
2102 #if SIZEOF_WCHAR_T == 4
2103 UniChar* szUniCharBuffer = new UniChar[nOutSize];
2104 #endif
2105
2106 CFStringGetCharacters(theString, theRange, szUniCharBuffer);
2107
2108 CFRelease(theString);
2109
2110 szUniCharBuffer[nOutLength] = '\0' ;
2111
2112 #if SIZEOF_WCHAR_T == 4
2113 wxMBConvUTF16 converter ;
2114 converter.MB2WC(szOut, (const char*)szUniCharBuffer , nOutSize ) ;
2115 delete[] szUniCharBuffer;
2116 #endif
2117
2118 return nOutLength;
2119 }
2120
2121 size_t WC2MB(char *szOut, const wchar_t *szUnConv, size_t nOutSize) const
2122 {
2123 wxASSERT(szUnConv);
2124
2125 size_t nRealOutSize;
2126 size_t nBufSize = wxWcslen(szUnConv);
2127 UniChar* szUniBuffer = (UniChar*) szUnConv;
2128
2129 #if SIZEOF_WCHAR_T == 4
2130 wxMBConvUTF16 converter ;
2131 nBufSize = converter.WC2MB( NULL , szUnConv , 0 );
2132 szUniBuffer = new UniChar[ (nBufSize / sizeof(UniChar)) + 1] ;
2133 converter.WC2MB( (char*) szUniBuffer , szUnConv, nBufSize + sizeof(UniChar)) ;
2134 nBufSize /= sizeof(UniChar);
2135 #endif
2136
2137 CFStringRef theString = CFStringCreateWithCharactersNoCopy(
2138 NULL, //allocator
2139 szUniBuffer,
2140 nBufSize,
2141 kCFAllocatorNull //deallocator - we want to deallocate it ourselves
2142 );
2143
2144 wxASSERT(theString);
2145
2146 //Note that CER puts a BOM when converting to unicode
2147 //so we check and use getchars instead in that case
2148 if (m_encoding == kCFStringEncodingUnicode)
2149 {
2150 if (szOut != NULL)
2151 CFStringGetCharacters(theString, CFRangeMake(0, nOutSize - 1), (UniChar*) szOut);
2152
2153 nRealOutSize = CFStringGetLength(theString) + 1;
2154 }
2155 else
2156 {
2157 CFStringGetBytes(
2158 theString,
2159 CFRangeMake(0, CFStringGetLength(theString)),
2160 m_encoding,
2161 0, //what to put in characters that can't be converted -
2162 //0 tells CFString to return NULL if it meets such a character
2163 false, //not an external representation
2164 (UInt8*) szOut,
2165 nOutSize,
2166 (CFIndex*) &nRealOutSize
2167 );
2168 }
2169
2170 CFRelease(theString);
2171
2172 #if SIZEOF_WCHAR_T == 4
2173 delete[] szUniBuffer;
2174 #endif
2175
2176 return nRealOutSize - 1;
2177 }
2178
2179 bool IsOk() const
2180 {
2181 return m_encoding != kCFStringEncodingInvalidId &&
2182 CFStringIsEncodingAvailable(m_encoding);
2183 }
2184
2185 private:
2186 CFStringEncoding m_encoding ;
2187 };
2188
2189 #endif // defined(__WXCOCOA__)
2190
2191 // ============================================================================
2192 // Mac conversion classes
2193 // ============================================================================
2194
2195 #if defined(__WXMAC__) && defined(TARGET_CARBON)
2196
2197 class wxMBConv_mac : public wxMBConv
2198 {
2199 public:
2200 wxMBConv_mac()
2201 {
2202 Init(CFStringGetSystemEncoding()) ;
2203 }
2204
2205 #if wxUSE_FONTMAP
2206 wxMBConv_mac(const wxChar* name)
2207 {
2208 Init( wxMacGetSystemEncFromFontEnc(wxFontMapperBase::Get()->CharsetToEncoding(name, false) ) ) ;
2209 }
2210 #endif
2211
2212 wxMBConv_mac(wxFontEncoding encoding)
2213 {
2214 Init( wxMacGetSystemEncFromFontEnc(encoding) );
2215 }
2216
2217 ~wxMBConv_mac()
2218 {
2219 OSStatus status = noErr ;
2220 status = TECDisposeConverter(m_MB2WC_converter);
2221 status = TECDisposeConverter(m_WC2MB_converter);
2222 }
2223
2224
2225 void Init( TextEncodingBase encoding)
2226 {
2227 OSStatus status = noErr ;
2228 m_char_encoding = encoding ;
2229 m_unicode_encoding = CreateTextEncoding(kTextEncodingUnicodeDefault,0,kUnicode16BitFormat) ;
2230
2231 status = TECCreateConverter(&m_MB2WC_converter,
2232 m_char_encoding,
2233 m_unicode_encoding);
2234 status = TECCreateConverter(&m_WC2MB_converter,
2235 m_unicode_encoding,
2236 m_char_encoding);
2237 }
2238
2239 size_t MB2WC(wchar_t *buf, const char *psz, size_t n) const
2240 {
2241 OSStatus status = noErr ;
2242 ByteCount byteOutLen ;
2243 ByteCount byteInLen = strlen(psz) ;
2244 wchar_t *tbuf = NULL ;
2245 UniChar* ubuf = NULL ;
2246 size_t res = 0 ;
2247
2248 if (buf == NULL)
2249 {
2250 //apple specs say at least 32
2251 n = wxMax( 32 , byteInLen ) ;
2252 tbuf = (wchar_t*) malloc( n * SIZEOF_WCHAR_T) ;
2253 }
2254 ByteCount byteBufferLen = n * sizeof( UniChar ) ;
2255 #if SIZEOF_WCHAR_T == 4
2256 ubuf = (UniChar*) malloc( byteBufferLen + 2 ) ;
2257 #else
2258 ubuf = (UniChar*) (buf ? buf : tbuf) ;
2259 #endif
2260 status = TECConvertText(m_MB2WC_converter, (ConstTextPtr) psz , byteInLen, &byteInLen,
2261 (TextPtr) ubuf , byteBufferLen, &byteOutLen);
2262 #if SIZEOF_WCHAR_T == 4
2263 // we have to terminate here, because n might be larger for the trailing zero, and if UniChar
2264 // is not properly terminated we get random characters at the end
2265 ubuf[byteOutLen / sizeof( UniChar ) ] = 0 ;
2266 wxMBConvUTF16 converter ;
2267 res = converter.MB2WC( (buf ? buf : tbuf) , (const char*)ubuf , n ) ;
2268 free( ubuf ) ;
2269 #else
2270 res = byteOutLen / sizeof( UniChar ) ;
2271 #endif
2272 if ( buf == NULL )
2273 free(tbuf) ;
2274
2275 if ( buf && res < n)
2276 buf[res] = 0;
2277
2278 return res ;
2279 }
2280
2281 size_t WC2MB(char *buf, const wchar_t *psz, size_t n) const
2282 {
2283 OSStatus status = noErr ;
2284 ByteCount byteOutLen ;
2285 ByteCount byteInLen = wxWcslen(psz) * SIZEOF_WCHAR_T ;
2286
2287 char *tbuf = NULL ;
2288
2289 if (buf == NULL)
2290 {
2291 //apple specs say at least 32
2292 n = wxMax( 32 , ((byteInLen / SIZEOF_WCHAR_T) * 8) + SIZEOF_WCHAR_T );
2293 tbuf = (char*) malloc( n ) ;
2294 }
2295
2296 ByteCount byteBufferLen = n ;
2297 UniChar* ubuf = NULL ;
2298 #if SIZEOF_WCHAR_T == 4
2299 wxMBConvUTF16 converter ;
2300 size_t unicharlen = converter.WC2MB( NULL , psz , 0 ) ;
2301 byteInLen = unicharlen ;
2302 ubuf = (UniChar*) malloc( byteInLen + 2 ) ;
2303 converter.WC2MB( (char*) ubuf , psz, unicharlen + 2 ) ;
2304 #else
2305 ubuf = (UniChar*) psz ;
2306 #endif
2307 status = TECConvertText(m_WC2MB_converter, (ConstTextPtr) ubuf , byteInLen, &byteInLen,
2308 (TextPtr) (buf ? buf : tbuf) , byteBufferLen, &byteOutLen);
2309 #if SIZEOF_WCHAR_T == 4
2310 free( ubuf ) ;
2311 #endif
2312 if ( buf == NULL )
2313 free(tbuf) ;
2314
2315 size_t res = byteOutLen ;
2316 if ( buf && res < n)
2317 {
2318 buf[res] = 0;
2319
2320 //we need to double-trip to verify it didn't insert any ? in place
2321 //of bogus characters
2322 wxWCharBuffer wcBuf(n);
2323 size_t pszlen = wxWcslen(psz);
2324 if ( MB2WC(wcBuf.data(), buf, n) == (size_t)-1 ||
2325 wxWcslen(wcBuf) != pszlen ||
2326 memcmp(wcBuf, psz, pszlen * sizeof(wchar_t)) != 0 )
2327 {
2328 // we didn't obtain the same thing we started from, hence
2329 // the conversion was lossy and we consider that it failed
2330 return (size_t)-1;
2331 }
2332 }
2333
2334 return res ;
2335 }
2336
2337 bool IsOk() const
2338 { return m_MB2WC_converter != NULL && m_WC2MB_converter != NULL ; }
2339
2340 private:
2341 TECObjectRef m_MB2WC_converter ;
2342 TECObjectRef m_WC2MB_converter ;
2343
2344 TextEncodingBase m_char_encoding ;
2345 TextEncodingBase m_unicode_encoding ;
2346 };
2347
2348 #endif // defined(__WXMAC__) && defined(TARGET_CARBON)
2349
2350 // ============================================================================
2351 // wxEncodingConverter based conversion classes
2352 // ============================================================================
2353
2354 #if wxUSE_FONTMAP
2355
2356 class wxMBConv_wxwin : public wxMBConv
2357 {
2358 private:
2359 void Init()
2360 {
2361 m_ok = m2w.Init(m_enc, wxFONTENCODING_UNICODE) &&
2362 w2m.Init(wxFONTENCODING_UNICODE, m_enc);
2363 }
2364
2365 public:
2366 // temporarily just use wxEncodingConverter stuff,
2367 // so that it works while a better implementation is built
2368 wxMBConv_wxwin(const wxChar* name)
2369 {
2370 if (name)
2371 m_enc = wxFontMapperBase::Get()->CharsetToEncoding(name, false);
2372 else
2373 m_enc = wxFONTENCODING_SYSTEM;
2374
2375 Init();
2376 }
2377
2378 wxMBConv_wxwin(wxFontEncoding enc)
2379 {
2380 m_enc = enc;
2381
2382 Init();
2383 }
2384
2385 size_t MB2WC(wchar_t *buf, const char *psz, size_t WXUNUSED(n)) const
2386 {
2387 size_t inbuf = strlen(psz);
2388 if (buf)
2389 {
2390 if (!m2w.Convert(psz,buf))
2391 return (size_t)-1;
2392 }
2393 return inbuf;
2394 }
2395
2396 size_t WC2MB(char *buf, const wchar_t *psz, size_t WXUNUSED(n)) const
2397 {
2398 const size_t inbuf = wxWcslen(psz);
2399 if (buf)
2400 {
2401 if (!w2m.Convert(psz,buf))
2402 return (size_t)-1;
2403 }
2404
2405 return inbuf;
2406 }
2407
2408 bool IsOk() const { return m_ok; }
2409
2410 public:
2411 wxFontEncoding m_enc;
2412 wxEncodingConverter m2w, w2m;
2413
2414 // were we initialized successfully?
2415 bool m_ok;
2416
2417 DECLARE_NO_COPY_CLASS(wxMBConv_wxwin)
2418 };
2419
2420 // make the constructors available for unit testing
2421 WXDLLIMPEXP_BASE wxMBConv* new_wxMBConv_wxwin( const wxChar* name )
2422 {
2423 wxMBConv_wxwin* result = new wxMBConv_wxwin( name );
2424 if ( !result->IsOk() )
2425 {
2426 delete result;
2427 return 0;
2428 }
2429 return result;
2430 }
2431
2432 #endif // wxUSE_FONTMAP
2433
2434 // ============================================================================
2435 // wxCSConv implementation
2436 // ============================================================================
2437
2438 void wxCSConv::Init()
2439 {
2440 m_name = NULL;
2441 m_convReal = NULL;
2442 m_deferred = true;
2443 }
2444
2445 wxCSConv::wxCSConv(const wxChar *charset)
2446 {
2447 Init();
2448
2449 if ( charset )
2450 {
2451 SetName(charset);
2452 }
2453
2454 m_encoding = wxFONTENCODING_SYSTEM;
2455 }
2456
2457 wxCSConv::wxCSConv(wxFontEncoding encoding)
2458 {
2459 if ( encoding == wxFONTENCODING_MAX || encoding == wxFONTENCODING_DEFAULT )
2460 {
2461 wxFAIL_MSG( _T("invalid encoding value in wxCSConv ctor") );
2462
2463 encoding = wxFONTENCODING_SYSTEM;
2464 }
2465
2466 Init();
2467
2468 m_encoding = encoding;
2469 }
2470
2471 wxCSConv::~wxCSConv()
2472 {
2473 Clear();
2474 }
2475
2476 wxCSConv::wxCSConv(const wxCSConv& conv)
2477 : wxMBConv()
2478 {
2479 Init();
2480
2481 SetName(conv.m_name);
2482 m_encoding = conv.m_encoding;
2483 }
2484
2485 wxCSConv& wxCSConv::operator=(const wxCSConv& conv)
2486 {
2487 Clear();
2488
2489 SetName(conv.m_name);
2490 m_encoding = conv.m_encoding;
2491
2492 return *this;
2493 }
2494
2495 void wxCSConv::Clear()
2496 {
2497 free(m_name);
2498 delete m_convReal;
2499
2500 m_name = NULL;
2501 m_convReal = NULL;
2502 }
2503
2504 void wxCSConv::SetName(const wxChar *charset)
2505 {
2506 if (charset)
2507 {
2508 m_name = wxStrdup(charset);
2509 m_deferred = true;
2510 }
2511 }
2512
2513 wxMBConv *wxCSConv::DoCreate() const
2514 {
2515 // check for the special case of ASCII or ISO8859-1 charset: as we have
2516 // special knowledge of it anyhow, we don't need to create a special
2517 // conversion object
2518 if ( m_encoding == wxFONTENCODING_ISO8859_1 )
2519 {
2520 // don't convert at all
2521 return NULL;
2522 }
2523
2524 // we trust OS to do conversion better than we can so try external
2525 // conversion methods first
2526 //
2527 // the full order is:
2528 // 1. OS conversion (iconv() under Unix or Win32 API)
2529 // 2. hard coded conversions for UTF
2530 // 3. wxEncodingConverter as fall back
2531
2532 // step (1)
2533 #ifdef HAVE_ICONV
2534 #if !wxUSE_FONTMAP
2535 if ( m_name )
2536 #endif // !wxUSE_FONTMAP
2537 {
2538 wxString name(m_name);
2539
2540 #if wxUSE_FONTMAP
2541 if ( name.empty() )
2542 name = wxFontMapperBase::GetEncodingName(m_encoding);
2543 #endif // wxUSE_FONTMAP
2544
2545 wxMBConv_iconv *conv = new wxMBConv_iconv(name);
2546 if ( conv->IsOk() )
2547 return conv;
2548
2549 delete conv;
2550 }
2551 #endif // HAVE_ICONV
2552
2553 #ifdef wxHAVE_WIN32_MB2WC
2554 {
2555 #if wxUSE_FONTMAP
2556 wxMBConv_win32 *conv = m_name ? new wxMBConv_win32(m_name)
2557 : new wxMBConv_win32(m_encoding);
2558 if ( conv->IsOk() )
2559 return conv;
2560
2561 delete conv;
2562 #else
2563 return NULL;
2564 #endif
2565 }
2566 #endif // wxHAVE_WIN32_MB2WC
2567 #if defined(__WXMAC__)
2568 {
2569 // leave UTF16 and UTF32 to the built-ins of wx
2570 if ( m_name || ( m_encoding < wxFONTENCODING_UTF16BE ||
2571 ( m_encoding >= wxFONTENCODING_MACMIN && m_encoding <= wxFONTENCODING_MACMAX ) ) )
2572 {
2573
2574 #if wxUSE_FONTMAP
2575 wxMBConv_mac *conv = m_name ? new wxMBConv_mac(m_name)
2576 : new wxMBConv_mac(m_encoding);
2577 #else
2578 wxMBConv_mac *conv = new wxMBConv_mac(m_encoding);
2579 #endif
2580 if ( conv->IsOk() )
2581 return conv;
2582
2583 delete conv;
2584 }
2585 }
2586 #endif
2587 #if defined(__WXCOCOA__)
2588 {
2589 if ( m_name || ( m_encoding <= wxFONTENCODING_UTF16 ) )
2590 {
2591
2592 #if wxUSE_FONTMAP
2593 wxMBConv_cocoa *conv = m_name ? new wxMBConv_cocoa(m_name)
2594 : new wxMBConv_cocoa(m_encoding);
2595 #else
2596 wxMBConv_cocoa *conv = new wxMBConv_cocoa(m_encoding);
2597 #endif
2598 if ( conv->IsOk() )
2599 return conv;
2600
2601 delete conv;
2602 }
2603 }
2604 #endif
2605 // step (2)
2606 wxFontEncoding enc = m_encoding;
2607 #if wxUSE_FONTMAP
2608 if ( enc == wxFONTENCODING_SYSTEM && m_name )
2609 {
2610 // use "false" to suppress interactive dialogs -- we can be called from
2611 // anywhere and popping up a dialog from here is the last thing we want to
2612 // do
2613 enc = wxFontMapperBase::Get()->CharsetToEncoding(m_name, false);
2614 }
2615 #endif // wxUSE_FONTMAP
2616
2617 switch ( enc )
2618 {
2619 case wxFONTENCODING_UTF7:
2620 return new wxMBConvUTF7;
2621
2622 case wxFONTENCODING_UTF8:
2623 return new wxMBConvUTF8;
2624
2625 case wxFONTENCODING_UTF16BE:
2626 return new wxMBConvUTF16BE;
2627
2628 case wxFONTENCODING_UTF16LE:
2629 return new wxMBConvUTF16LE;
2630
2631 case wxFONTENCODING_UTF32BE:
2632 return new wxMBConvUTF32BE;
2633
2634 case wxFONTENCODING_UTF32LE:
2635 return new wxMBConvUTF32LE;
2636
2637 default:
2638 // nothing to do but put here to suppress gcc warnings
2639 ;
2640 }
2641
2642 // step (3)
2643 #if wxUSE_FONTMAP
2644 {
2645 wxMBConv_wxwin *conv = m_name ? new wxMBConv_wxwin(m_name)
2646 : new wxMBConv_wxwin(m_encoding);
2647 if ( conv->IsOk() )
2648 return conv;
2649
2650 delete conv;
2651 }
2652 #endif // wxUSE_FONTMAP
2653
2654 // NB: This is a hack to prevent deadlock. What could otherwise happen
2655 // in Unicode build: wxConvLocal creation ends up being here
2656 // because of some failure and logs the error. But wxLog will try to
2657 // attach timestamp, for which it will need wxConvLocal (to convert
2658 // time to char* and then wchar_t*), but that fails, tries to log
2659 // error, but wxLog has a (already locked) critical section that
2660 // guards static buffer.
2661 static bool alreadyLoggingError = false;
2662 if (!alreadyLoggingError)
2663 {
2664 alreadyLoggingError = true;
2665 wxLogError(_("Cannot convert from the charset '%s'!"),
2666 m_name ? m_name
2667 :
2668 #if wxUSE_FONTMAP
2669 wxFontMapperBase::GetEncodingDescription(m_encoding).c_str()
2670 #else // !wxUSE_FONTMAP
2671 wxString::Format(_("encoding %s"), m_encoding).c_str()
2672 #endif // wxUSE_FONTMAP/!wxUSE_FONTMAP
2673 );
2674 alreadyLoggingError = false;
2675 }
2676
2677 return NULL;
2678 }
2679
2680 void wxCSConv::CreateConvIfNeeded() const
2681 {
2682 if ( m_deferred )
2683 {
2684 wxCSConv *self = (wxCSConv *)this; // const_cast
2685
2686 #if wxUSE_INTL
2687 // if we don't have neither the name nor the encoding, use the default
2688 // encoding for this system
2689 if ( !m_name && m_encoding == wxFONTENCODING_SYSTEM )
2690 {
2691 self->m_name = wxStrdup(wxLocale::GetSystemEncodingName());
2692 }
2693 #endif // wxUSE_INTL
2694
2695 self->m_convReal = DoCreate();
2696 self->m_deferred = false;
2697 }
2698 }
2699
2700 size_t wxCSConv::MB2WC(wchar_t *buf, const char *psz, size_t n) const
2701 {
2702 CreateConvIfNeeded();
2703
2704 if (m_convReal)
2705 return m_convReal->MB2WC(buf, psz, n);
2706
2707 // latin-1 (direct)
2708 size_t len = strlen(psz);
2709
2710 if (buf)
2711 {
2712 for (size_t c = 0; c <= len; c++)
2713 buf[c] = (unsigned char)(psz[c]);
2714 }
2715
2716 return len;
2717 }
2718
2719 size_t wxCSConv::WC2MB(char *buf, const wchar_t *psz, size_t n) const
2720 {
2721 CreateConvIfNeeded();
2722
2723 if (m_convReal)
2724 return m_convReal->WC2MB(buf, psz, n);
2725
2726 // latin-1 (direct)
2727 const size_t len = wxWcslen(psz);
2728 if (buf)
2729 {
2730 for (size_t c = 0; c <= len; c++)
2731 {
2732 if (psz[c] > 0xFF)
2733 return (size_t)-1;
2734 buf[c] = (char)psz[c];
2735 }
2736 }
2737 else
2738 {
2739 for (size_t c = 0; c <= len; c++)
2740 {
2741 if (psz[c] > 0xFF)
2742 return (size_t)-1;
2743 }
2744 }
2745
2746 return len;
2747 }
2748
2749 // ----------------------------------------------------------------------------
2750 // globals
2751 // ----------------------------------------------------------------------------
2752
2753 #ifdef __WINDOWS__
2754 static wxMBConv_win32 wxConvLibcObj;
2755 #elif defined(__WXMAC__) && !defined(__MACH__)
2756 static wxMBConv_mac wxConvLibcObj ;
2757 #else
2758 static wxMBConvLibc wxConvLibcObj;
2759 #endif
2760
2761 static wxCSConv wxConvLocalObj(wxFONTENCODING_SYSTEM);
2762 static wxCSConv wxConvISO8859_1Obj(wxFONTENCODING_ISO8859_1);
2763 static wxMBConvUTF7 wxConvUTF7Obj;
2764 static wxMBConvUTF8 wxConvUTF8Obj;
2765
2766 WXDLLIMPEXP_DATA_BASE(wxMBConv&) wxConvLibc = wxConvLibcObj;
2767 WXDLLIMPEXP_DATA_BASE(wxCSConv&) wxConvLocal = wxConvLocalObj;
2768 WXDLLIMPEXP_DATA_BASE(wxCSConv&) wxConvISO8859_1 = wxConvISO8859_1Obj;
2769 WXDLLIMPEXP_DATA_BASE(wxMBConvUTF7&) wxConvUTF7 = wxConvUTF7Obj;
2770 WXDLLIMPEXP_DATA_BASE(wxMBConvUTF8&) wxConvUTF8 = wxConvUTF8Obj;
2771 WXDLLIMPEXP_DATA_BASE(wxMBConv *) wxConvCurrent = &wxConvLibcObj;
2772 WXDLLIMPEXP_DATA_BASE(wxMBConv *) wxConvFileName = &
2773 #ifdef __WXOSX__
2774 wxConvUTF8Obj;
2775 #else
2776 wxConvLibcObj;
2777 #endif
2778
2779
2780 #else // !wxUSE_WCHAR_T
2781
2782 // stand-ins in absence of wchar_t
2783 WXDLLIMPEXP_DATA_BASE(wxMBConv) wxConvLibc,
2784 wxConvISO8859_1,
2785 wxConvLocal,
2786 wxConvUTF8;
2787
2788 #endif // wxUSE_WCHAR_T/!wxUSE_WCHAR_T
2789
2790
wxWidgets (Impactor)