ConvertUTF.c
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1 /*
2  * Copyright 2001-2004 Unicode, Inc.
3  *
4  * Disclaimer
5  *
6  * This source code is provided as is by Unicode, Inc. No claims are
7  * made as to fitness for any particular purpose. No warranties of any
8  * kind are expressed or implied. The recipient agrees to determine
9  * applicability of information provided. If this file has been
10  * purchased on magnetic or optical media from Unicode, Inc., the
11  * sole remedy for any claim will be exchange of defective media
12  * within 90 days of receipt.
13  *
14  * Limitations on Rights to Redistribute This Code
15  *
16  * Unicode, Inc. hereby grants the right to freely use the information
17  * supplied in this file in the creation of products supporting the
18  * Unicode Standard, and to make copies of this file in any form
19  * for internal or external distribution as long as this notice
20  * remains attached.
21  */
22 
23 /* ---------------------------------------------------------------------
24 
25  Conversions between UTF32, UTF-16, and UTF-8. Source code file.
26  Author: Mark E. Davis, 1994.
27  Rev History: Rick McGowan, fixes & updates May 2001.
28  Sept 2001: fixed const & error conditions per
29  mods suggested by S. Parent & A. Lillich.
30  June 2002: Tim Dodd added detection and handling of incomplete
31  source sequences, enhanced error detection, added casts
32  to eliminate compiler warnings.
33  July 2003: slight mods to back out aggressive FFFE detection.
34  Jan 2004: updated switches in from-UTF8 conversions.
35  Oct 2004: updated to use UNI_MAX_LEGAL_UTF32 in UTF-32 conversions.
36 
37  See the header file "ConvertUTF.h" for complete documentation.
38 
39 ------------------------------------------------------------------------ */
40 
41 
42 #include "ConvertUTF.h"
43 #ifdef CVTUTF_DEBUG
44 #include <stdio.h>
45 #endif
46 
47 static const int halfShift = 10; /* used for shifting by 10 bits */
48 
49 static const UTF32 halfBase = 0x0010000UL;
50 static const UTF32 halfMask = 0x3FFUL;
51 
52 #define UNI_SUR_HIGH_START (UTF32)0xD800
53 #define UNI_SUR_HIGH_END (UTF32)0xDBFF
54 #define UNI_SUR_LOW_START (UTF32)0xDC00
55 #define UNI_SUR_LOW_END (UTF32)0xDFFF
56 #define false 0
57 #define true 1
58 
59 /* --------------------------------------------------------------------- */
60 
62  const UTF32** sourceStart, const UTF32* sourceEnd,
63  UTF16** targetStart, UTF16* targetEnd, ConversionFlags flags) {
65  const UTF32* source = *sourceStart;
66  UTF16* target = *targetStart;
67  while (source < sourceEnd) {
68  UTF32 ch;
69  if (target >= targetEnd) {
70  result = targetExhausted; break;
71  }
72  ch = *source++;
73  if (ch <= UNI_MAX_BMP) { /* Target is a character <= 0xFFFF */
74  /* UTF-16 surrogate values are illegal in UTF-32; 0xffff or 0xfffe are both reserved values */
75  if (ch >= UNI_SUR_HIGH_START && ch <= UNI_SUR_LOW_END) {
76  if (flags == strictConversion) {
77  --source; /* return to the illegal value itself */
78  result = sourceIllegal;
79  break;
80  } else {
81  *target++ = UNI_REPLACEMENT_CHAR;
82  }
83  } else {
84  *target++ = (UTF16)ch; /* normal case */
85  }
86  } else if (ch > UNI_MAX_LEGAL_UTF32) {
87  if (flags == strictConversion) {
88  result = sourceIllegal;
89  } else {
90  *target++ = UNI_REPLACEMENT_CHAR;
91  }
92  } else {
93  /* target is a character in range 0xFFFF - 0x10FFFF. */
94  if (target + 1 >= targetEnd) {
95  --source; /* Back up source pointer! */
96  result = targetExhausted; break;
97  }
98  ch -= halfBase;
99  *target++ = (UTF16)((ch >> halfShift) + UNI_SUR_HIGH_START);
100  *target++ = (UTF16)((ch & halfMask) + UNI_SUR_LOW_START);
101  }
102  }
103  *sourceStart = source;
104  *targetStart = target;
105  return result;
106 }
107 
108 /* --------------------------------------------------------------------- */
109 
111  const UTF16** sourceStart, const UTF16* sourceEnd,
112  UTF32** targetStart, UTF32* targetEnd, ConversionFlags flags) {
114  const UTF16* source = *sourceStart;
115  UTF32* target = *targetStart;
116  UTF32 ch, ch2;
117  while (source < sourceEnd) {
118  const UTF16* oldSource = source; /* In case we have to back up because of target overflow. */
119  ch = *source++;
120  /* If we have a surrogate pair, convert to UTF32 first. */
121  if (ch >= UNI_SUR_HIGH_START && ch <= UNI_SUR_HIGH_END) {
122  /* If the 16 bits following the high surrogate are in the source buffer... */
123  if (source < sourceEnd) {
124  ch2 = *source;
125  /* If it's a low surrogate, convert to UTF32. */
126  if (ch2 >= UNI_SUR_LOW_START && ch2 <= UNI_SUR_LOW_END) {
127  ch = ((ch - UNI_SUR_HIGH_START) << halfShift)
128  + (ch2 - UNI_SUR_LOW_START) + halfBase;
129  ++source;
130  } else if (flags == strictConversion) { /* it's an unpaired high surrogate */
131  --source; /* return to the illegal value itself */
132  result = sourceIllegal;
133  break;
134  }
135  } else { /* We don't have the 16 bits following the high surrogate. */
136  --source; /* return to the high surrogate */
137  result = sourceExhausted;
138  break;
139  }
140  } else if (flags == strictConversion) {
141  /* UTF-16 surrogate values are illegal in UTF-32 */
142  if (ch >= UNI_SUR_LOW_START && ch <= UNI_SUR_LOW_END) {
143  --source; /* return to the illegal value itself */
144  result = sourceIllegal;
145  break;
146  }
147  }
148  if (target >= targetEnd) {
149  source = oldSource; /* Back up source pointer! */
150  result = targetExhausted; break;
151  }
152  *target++ = ch;
153  }
154  *sourceStart = source;
155  *targetStart = target;
156 #ifdef CVTUTF_DEBUG
157 if (result == sourceIllegal) {
158  fprintf(stderr, "ConvertUTF16toUTF32 illegal seq 0x%04x,%04x\n", ch, ch2);
159  fflush(stderr);
160 }
161 #endif
162  return result;
163 }
164 
165 /* --------------------------------------------------------------------- */
166 
167 /*
168  * Index into the table below with the first byte of a UTF-8 sequence to
169  * get the number of trailing bytes that are supposed to follow it.
170  * Note that *legal* UTF-8 values can't have 4 or 5-bytes. The table is
171  * left as-is for anyone who may want to do such conversion, which was
172  * allowed in earlier algorithms.
173  */
174 static const char trailingBytesForUTF8[256] = {
175  0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
176  0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
177  0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
178  0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
179  0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
180  0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
181  1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
182  2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 3,3,3,3,3,3,3,3,4,4,4,4,5,5,5,5
183 };
184 
185 /*
186  * Magic values subtracted from a buffer value during UTF8 conversion.
187  * This table contains as many values as there might be trailing bytes
188  * in a UTF-8 sequence.
189  */
190 static const UTF32 offsetsFromUTF8[6] = { 0x00000000UL, 0x00003080UL, 0x000E2080UL,
191  0x03C82080UL, 0xFA082080UL, 0x82082080UL };
192 
193 /*
194  * Once the bits are split out into bytes of UTF-8, this is a mask OR-ed
195  * into the first byte, depending on how many bytes follow. There are
196  * as many entries in this table as there are UTF-8 sequence types.
197  * (I.e., one byte sequence, two byte... etc.). Remember that sequencs
198  * for *legal* UTF-8 will be 4 or fewer bytes total.
199  */
200 static const UTF8 firstByteMark[7] = { 0x00, 0x00, 0xC0, 0xE0, 0xF0, 0xF8, 0xFC };
201 
202 /* --------------------------------------------------------------------- */
203 
204 /* The interface converts a whole buffer to avoid function-call overhead.
205  * Constants have been gathered. Loops & conditionals have been removed as
206  * much as possible for efficiency, in favor of drop-through switches.
207  * (See "Note A" at the bottom of the file for equivalent code.)
208  * If your compiler supports it, the "isLegalUTF8" call can be turned
209  * into an inline function.
210  */
211 
212 /* --------------------------------------------------------------------- */
213 
215  const UTF16** sourceStart, const UTF16* sourceEnd,
216  UTF8** targetStart, UTF8* targetEnd, ConversionFlags flags) {
218  const UTF16* source = *sourceStart;
219  UTF8* target = *targetStart;
220  while (source < sourceEnd) {
221  UTF32 ch;
222  unsigned short bytesToWrite = 0;
223  const UTF32 byteMask = 0xBF;
224  const UTF32 byteMark = 0x80;
225  const UTF16* oldSource = source; /* In case we have to back up because of target overflow. */
226  ch = *source++;
227  /* If we have a surrogate pair, convert to UTF32 first. */
228  if (ch >= UNI_SUR_HIGH_START && ch <= UNI_SUR_HIGH_END) {
229  /* If the 16 bits following the high surrogate are in the source buffer... */
230  if (source < sourceEnd) {
231  UTF32 ch2 = *source;
232  /* If it's a low surrogate, convert to UTF32. */
233  if (ch2 >= UNI_SUR_LOW_START && ch2 <= UNI_SUR_LOW_END) {
234  ch = ((ch - UNI_SUR_HIGH_START) << halfShift)
235  + (ch2 - UNI_SUR_LOW_START) + halfBase;
236  ++source;
237  } else if (flags == strictConversion) { /* it's an unpaired high surrogate */
238  --source; /* return to the illegal value itself */
239  result = sourceIllegal;
240  break;
241  }
242  } else { /* We don't have the 16 bits following the high surrogate. */
243  --source; /* return to the high surrogate */
244  result = sourceExhausted;
245  break;
246  }
247  } else if (flags == strictConversion) {
248  /* UTF-16 surrogate values are illegal in UTF-32 */
249  if (ch >= UNI_SUR_LOW_START && ch <= UNI_SUR_LOW_END) {
250  --source; /* return to the illegal value itself */
251  result = sourceIllegal;
252  break;
253  }
254  }
255  /* Figure out how many bytes the result will require */
256  if (ch < (UTF32)0x80) { bytesToWrite = 1;
257  } else if (ch < (UTF32)0x800) { bytesToWrite = 2;
258  } else if (ch < (UTF32)0x10000) { bytesToWrite = 3;
259  } else if (ch < (UTF32)0x110000) { bytesToWrite = 4;
260  } else { bytesToWrite = 3;
262  }
263 
264  target += bytesToWrite;
265  if (target > targetEnd) {
266  source = oldSource; /* Back up source pointer! */
267  target -= bytesToWrite; result = targetExhausted; break;
268  }
269  switch (bytesToWrite) { /* note: everything falls through. */
270  case 4: *--target = (UTF8)((ch | byteMark) & byteMask); ch >>= 6;
271  case 3: *--target = (UTF8)((ch | byteMark) & byteMask); ch >>= 6;
272  case 2: *--target = (UTF8)((ch | byteMark) & byteMask); ch >>= 6;
273  case 1: *--target = (UTF8)(ch | firstByteMark[bytesToWrite]);
274  }
275  target += bytesToWrite;
276  }
277  *sourceStart = source;
278  *targetStart = target;
279  return result;
280 }
281 
282 /* --------------------------------------------------------------------- */
283 
284 /*
285  * Utility routine to tell whether a sequence of bytes is legal UTF-8.
286  * This must be called with the length pre-determined by the first byte.
287  * If not calling this from ConvertUTF8to*, then the length can be set by:
288  * length = trailingBytesForUTF8[*source]+1;
289  * and the sequence is illegal right away if there aren't that many bytes
290  * available.
291  * If presented with a length > 4, this returns false. The Unicode
292  * definition of UTF-8 goes up to 4-byte sequences.
293  */
294 
295 static Boolean isLegalUTF8(const UTF8 *source, int length) {
296  UTF8 a;
297  const UTF8 *srcptr = source+length;
298  switch (length) {
299  default: return false;
300  /* Everything else falls through when "true"... */
301  case 4: if ((a = (*--srcptr)) < 0x80 || a > 0xBF) return false;
302  case 3: if ((a = (*--srcptr)) < 0x80 || a > 0xBF) return false;
303  case 2: if ((a = (*--srcptr)) > 0xBF) return false;
304 
305  switch (*source) {
306  /* no fall-through in this inner switch */
307  case 0xE0: if (a < 0xA0) return false; break;
308  case 0xED: if (a > 0x9F) return false; break;
309  case 0xF0: if (a < 0x90) return false; break;
310  case 0xF4: if (a > 0x8F) return false; break;
311  default: if (a < 0x80) return false;
312  }
313 
314  case 1: if (*source >= 0x80 && *source < 0xC2) return false;
315  }
316  if (*source > 0xF4) return false;
317  return true;
318 }
319 
320 /* --------------------------------------------------------------------- */
321 
322 /*
323  * Exported function to return whether a UTF-8 sequence is legal or not.
324  * This is not used here; it's just exported.
325  */
326 Boolean isLegalUTF8Sequence(const UTF8 *source, const UTF8 *sourceEnd) {
328  if (source+length > sourceEnd) {
329  return false;
330  }
331  return isLegalUTF8(source, length);
332 }
333 
334 /* --------------------------------------------------------------------- */
335 
337  const UTF8** sourceStart, const UTF8* sourceEnd,
338  UTF16** targetStart, UTF16* targetEnd, ConversionFlags flags) {
340  const UTF8* source = *sourceStart;
341  UTF16* target = *targetStart;
342  while (source < sourceEnd) {
343  UTF32 ch = 0;
344  unsigned short extraBytesToRead = trailingBytesForUTF8[*source];
345  if (source + extraBytesToRead >= sourceEnd) {
346  result = sourceExhausted; break;
347  }
348  /* Do this check whether lenient or strict */
349  if (! isLegalUTF8(source, extraBytesToRead+1)) {
350  result = sourceIllegal;
351  break;
352  }
353  /*
354  * The cases all fall through. See "Note A" below.
355  */
356  switch (extraBytesToRead) {
357  case 5: ch += *source++; ch <<= 6; /* remember, illegal UTF-8 */
358  case 4: ch += *source++; ch <<= 6; /* remember, illegal UTF-8 */
359  case 3: ch += *source++; ch <<= 6;
360  case 2: ch += *source++; ch <<= 6;
361  case 1: ch += *source++; ch <<= 6;
362  case 0: ch += *source++;
363  }
364  ch -= offsetsFromUTF8[extraBytesToRead];
365 
366  if (target >= targetEnd) {
367  source -= (extraBytesToRead+1); /* Back up source pointer! */
368  result = targetExhausted; break;
369  }
370  if (ch <= UNI_MAX_BMP) { /* Target is a character <= 0xFFFF */
371  /* UTF-16 surrogate values are illegal in UTF-32 */
372  if (ch >= UNI_SUR_HIGH_START && ch <= UNI_SUR_LOW_END) {
373  if (flags == strictConversion) {
374  source -= (extraBytesToRead+1); /* return to the illegal value itself */
375  result = sourceIllegal;
376  break;
377  } else {
378  *target++ = UNI_REPLACEMENT_CHAR;
379  }
380  } else {
381  *target++ = (UTF16)ch; /* normal case */
382  }
383  } else if (ch > UNI_MAX_UTF16) {
384  if (flags == strictConversion) {
385  result = sourceIllegal;
386  source -= (extraBytesToRead+1); /* return to the start */
387  break; /* Bail out; shouldn't continue */
388  } else {
389  *target++ = UNI_REPLACEMENT_CHAR;
390  }
391  } else {
392  /* target is a character in range 0xFFFF - 0x10FFFF. */
393  if (target + 1 >= targetEnd) {
394  source -= (extraBytesToRead+1); /* Back up source pointer! */
395  result = targetExhausted; break;
396  }
397  ch -= halfBase;
398  *target++ = (UTF16)((ch >> halfShift) + UNI_SUR_HIGH_START);
399  *target++ = (UTF16)((ch & halfMask) + UNI_SUR_LOW_START);
400  }
401  }
402  *sourceStart = source;
403  *targetStart = target;
404  return result;
405 }
406 
407 /* --------------------------------------------------------------------- */
408 
410  const UTF32** sourceStart, const UTF32* sourceEnd,
411  UTF8** targetStart, UTF8* targetEnd, ConversionFlags flags) {
413  const UTF32* source = *sourceStart;
414  UTF8* target = *targetStart;
415  while (source < sourceEnd) {
416  UTF32 ch;
417  unsigned short bytesToWrite = 0;
418  const UTF32 byteMask = 0xBF;
419  const UTF32 byteMark = 0x80;
420  ch = *source++;
421  if (flags == strictConversion ) {
422  /* UTF-16 surrogate values are illegal in UTF-32 */
423  if (ch >= UNI_SUR_HIGH_START && ch <= UNI_SUR_LOW_END) {
424  --source; /* return to the illegal value itself */
425  result = sourceIllegal;
426  break;
427  }
428  }
429  /*
430  * Figure out how many bytes the result will require. Turn any
431  * illegally large UTF32 things (> Plane 17) into replacement chars.
432  */
433  if (ch < (UTF32)0x80) { bytesToWrite = 1;
434  } else if (ch < (UTF32)0x800) { bytesToWrite = 2;
435  } else if (ch < (UTF32)0x10000) { bytesToWrite = 3;
436  } else if (ch <= UNI_MAX_LEGAL_UTF32) { bytesToWrite = 4;
437  } else { bytesToWrite = 3;
439  result = sourceIllegal;
440  }
441 
442  target += bytesToWrite;
443  if (target > targetEnd) {
444  --source; /* Back up source pointer! */
445  target -= bytesToWrite; result = targetExhausted; break;
446  }
447  switch (bytesToWrite) { /* note: everything falls through. */
448  case 4: *--target = (UTF8)((ch | byteMark) & byteMask); ch >>= 6;
449  case 3: *--target = (UTF8)((ch | byteMark) & byteMask); ch >>= 6;
450  case 2: *--target = (UTF8)((ch | byteMark) & byteMask); ch >>= 6;
451  case 1: *--target = (UTF8) (ch | firstByteMark[bytesToWrite]);
452  }
453  target += bytesToWrite;
454  }
455  *sourceStart = source;
456  *targetStart = target;
457  return result;
458 }
459 
460 /* --------------------------------------------------------------------- */
461 
463  const UTF8** sourceStart, const UTF8* sourceEnd,
464  UTF32** targetStart, UTF32* targetEnd, ConversionFlags flags) {
466  const UTF8* source = *sourceStart;
467  UTF32* target = *targetStart;
468  while (source < sourceEnd) {
469  UTF32 ch = 0;
470  unsigned short extraBytesToRead = trailingBytesForUTF8[*source];
471  if (source + extraBytesToRead >= sourceEnd) {
472  result = sourceExhausted; break;
473  }
474  /* Do this check whether lenient or strict */
475  if (! isLegalUTF8(source, extraBytesToRead+1)) {
476  result = sourceIllegal;
477  break;
478  }
479  /*
480  * The cases all fall through. See "Note A" below.
481  */
482  switch (extraBytesToRead) {
483  case 5: ch += *source++; ch <<= 6;
484  case 4: ch += *source++; ch <<= 6;
485  case 3: ch += *source++; ch <<= 6;
486  case 2: ch += *source++; ch <<= 6;
487  case 1: ch += *source++; ch <<= 6;
488  case 0: ch += *source++;
489  }
490  ch -= offsetsFromUTF8[extraBytesToRead];
491 
492  if (target >= targetEnd) {
493  source -= (extraBytesToRead+1); /* Back up the source pointer! */
494  result = targetExhausted; break;
495  }
496  if (ch <= UNI_MAX_LEGAL_UTF32) {
497  /*
498  * UTF-16 surrogate values are illegal in UTF-32, and anything
499  * over Plane 17 (> 0x10FFFF) is illegal.
500  */
501  if (ch >= UNI_SUR_HIGH_START && ch <= UNI_SUR_LOW_END) {
502  if (flags == strictConversion) {
503  source -= (extraBytesToRead+1); /* return to the illegal value itself */
504  result = sourceIllegal;
505  break;
506  } else {
507  *target++ = UNI_REPLACEMENT_CHAR;
508  }
509  } else {
510  *target++ = ch;
511  }
512  } else { /* i.e., ch > UNI_MAX_LEGAL_UTF32 */
513  result = sourceIllegal;
514  *target++ = UNI_REPLACEMENT_CHAR;
515  }
516  }
517  *sourceStart = source;
518  *targetStart = target;
519  return result;
520 }
521 
522 /* ---------------------------------------------------------------------
523 
524  Note A.
525  The fall-through switches in UTF-8 reading code save a
526  temp variable, some decrements & conditionals. The switches
527  are equivalent to the following loop:
528  {
529  int tmpBytesToRead = extraBytesToRead+1;
530  do {
531  ch += *source++;
532  --tmpBytesToRead;
533  if (tmpBytesToRead) ch <<= 6;
534  } while (tmpBytesToRead > 0);
535  }
536  In UTF-8 writing code, the switches on "bytesToWrite" are
537  similarly unrolled loops.
538 
539  --------------------------------------------------------------------- */
#define UNI_MAX_BMP
Definition: ConvertUTF.h:97
static const UTF8 firstByteMark[7]
Definition: ConvertUTF.c:200
#define UNI_MAX_UTF16
Definition: ConvertUTF.h:98
#define UNI_MAX_LEGAL_UTF32
Definition: ConvertUTF.h:100
#define UNI_REPLACEMENT_CHAR
Definition: ConvertUTF.h:96
ConversionResult
Definition: ConvertUTF.h:102
ConversionResult ConvertUTF8toUTF16(const UTF8 **sourceStart, const UTF8 *sourceEnd, UTF16 **targetStart, UTF16 *targetEnd, ConversionFlags flags)
Definition: ConvertUTF.c:336
ConversionResult ConvertUTF8toUTF32(const UTF8 **sourceStart, const UTF8 *sourceEnd, UTF32 **targetStart, UTF32 *targetEnd, ConversionFlags flags)
Definition: ConvertUTF.c:462
ConversionResult ConvertUTF16toUTF8(const UTF16 **sourceStart, const UTF16 *sourceEnd, UTF8 **targetStart, UTF8 *targetEnd, ConversionFlags flags)
Definition: ConvertUTF.c:214
#define UNI_SUR_LOW_END
Definition: ConvertUTF.c:55
unsigned char UTF8
Definition: ConvertUTF.h:92
#define UNI_SUR_LOW_START
Definition: ConvertUTF.c:54
ConversionResult ConvertUTF16toUTF32(const UTF16 **sourceStart, const UTF16 *sourceEnd, UTF32 **targetStart, UTF32 *targetEnd, ConversionFlags flags)
Definition: ConvertUTF.c:110
unsigned short UTF16
Definition: ConvertUTF.h:91
const char * source
Definition: lz4hc.h:181
#define UNI_SUR_HIGH_START
Definition: ConvertUTF.c:52
unsigned char Boolean
Definition: ConvertUTF.h:93
ConversionResult ConvertUTF32toUTF16(const UTF32 **sourceStart, const UTF32 *sourceEnd, UTF16 **targetStart, UTF16 *targetEnd, ConversionFlags flags)
Definition: ConvertUTF.c:61
static const int halfShift
Definition: ConvertUTF.c:47
unsigned int UTF32
Definition: ConvertUTF.h:90
static const UTF32 offsetsFromUTF8[6]
Definition: ConvertUTF.c:190
static const char trailingBytesForUTF8[256]
Definition: ConvertUTF.c:174
static const UTF32 halfMask
Definition: ConvertUTF.c:50
ConversionFlags
Definition: ConvertUTF.h:109
ConversionResult ConvertUTF32toUTF8(const UTF32 **sourceStart, const UTF32 *sourceEnd, UTF8 **targetStart, UTF8 *targetEnd, ConversionFlags flags)
Definition: ConvertUTF.c:409
static const UTF32 halfBase
Definition: ConvertUTF.c:49
Boolean isLegalUTF8Sequence(const UTF8 *source, const UTF8 *sourceEnd)
Definition: ConvertUTF.c:326
GLM_FUNC_DECL genType::value_type length(genType const &x)
static Boolean isLegalUTF8(const UTF8 *source, int length)
Definition: ConvertUTF.c:295
#define UNI_SUR_HIGH_END
Definition: ConvertUTF.c:53


rtabmap
Author(s): Mathieu Labbe
autogenerated on Wed Jun 5 2019 22:41:31