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conv.c
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1 /*-------------------------------------------------------------------------
2  *
3  * Utility functions for conversion procs.
4  *
5  * Portions Copyright (c) 1996-2021, PostgreSQL Global Development Group
6  * Portions Copyright (c) 1994, Regents of the University of California
7  *
8  * IDENTIFICATION
9  * src/backend/utils/mb/conv.c
10  *
11  *-------------------------------------------------------------------------
12  */
13 #include "postgres.h"
14 #include "mb/pg_wchar.h"
15 
16 
17 /*
18  * local2local: a generic single byte charset encoding
19  * conversion between two ASCII-superset encodings.
20  *
21  * l points to the source string of length len
22  * p is the output area (must be large enough!)
23  * src_encoding is the PG identifier for the source encoding
24  * dest_encoding is the PG identifier for the target encoding
25  * tab holds conversion entries for the source charset
26  * starting from 128 (0x80). each entry in the table holds the corresponding
27  * code point for the target charset, or 0 if there is no equivalent code.
28  *
29  * Returns the number of input bytes consumed. If noError is true, this can
30  * be less than 'len'.
31  */
32 int
33 local2local(const unsigned char *l,
34  unsigned char *p,
35  int len,
36  int src_encoding,
37  int dest_encoding,
38  const unsigned char *tab,
39  bool noError)
40 {
41  const unsigned char *start = l;
42  unsigned char c1,
43  c2;
44 
45  while (len > 0)
46  {
47  c1 = *l;
48  if (c1 == 0)
49  {
50  if (noError)
51  break;
52  report_invalid_encoding(src_encoding, (const char *) l, len);
53  }
54  if (!IS_HIGHBIT_SET(c1))
55  *p++ = c1;
56  else
57  {
58  c2 = tab[c1 - HIGHBIT];
59  if (c2)
60  *p++ = c2;
61  else
62  {
63  if (noError)
64  break;
65  report_untranslatable_char(src_encoding, dest_encoding,
66  (const char *) l, len);
67  }
68  }
69  l++;
70  len--;
71  }
72  *p = '\0';
73 
74  return l - start;
75 }
76 
77 /*
78  * LATINn ---> MIC when the charset's local codes map directly to MIC
79  *
80  * l points to the source string of length len
81  * p is the output area (must be large enough!)
82  * lc is the mule character set id for the local encoding
83  * encoding is the PG identifier for the local encoding
84  *
85  * Returns the number of input bytes consumed. If noError is true, this can
86  * be less than 'len'.
87  */
88 int
89 latin2mic(const unsigned char *l, unsigned char *p, int len,
90  int lc, int encoding, bool noError)
91 {
92  const unsigned char *start = l;
93  int c1;
94 
95  while (len > 0)
96  {
97  c1 = *l;
98  if (c1 == 0)
99  {
100  if (noError)
101  break;
102  report_invalid_encoding(encoding, (const char *) l, len);
103  }
104  if (IS_HIGHBIT_SET(c1))
105  *p++ = lc;
106  *p++ = c1;
107  l++;
108  len--;
109  }
110  *p = '\0';
111 
112  return l - start;
113 }
114 
115 /*
116  * MIC ---> LATINn when the charset's local codes map directly to MIC
117  *
118  * mic points to the source string of length len
119  * p is the output area (must be large enough!)
120  * lc is the mule character set id for the local encoding
121  * encoding is the PG identifier for the local encoding
122  *
123  * Returns the number of input bytes consumed. If noError is true, this can
124  * be less than 'len'.
125  */
126 int
127 mic2latin(const unsigned char *mic, unsigned char *p, int len,
128  int lc, int encoding, bool noError)
129 {
130  const unsigned char *start = mic;
131  int c1;
132 
133  while (len > 0)
134  {
135  c1 = *mic;
136  if (c1 == 0)
137  {
138  if (noError)
139  break;
140  report_invalid_encoding(PG_MULE_INTERNAL, (const char *) mic, len);
141  }
142  if (!IS_HIGHBIT_SET(c1))
143  {
144  /* easy for ASCII */
145  *p++ = c1;
146  mic++;
147  len--;
148  }
149  else
150  {
151  int l = pg_mule_mblen(mic);
152 
153  if (len < l)
154  {
155  if (noError)
156  break;
157  report_invalid_encoding(PG_MULE_INTERNAL, (const char *) mic,
158  len);
159  }
160  if (l != 2 || c1 != lc || !IS_HIGHBIT_SET(mic[1]))
161  {
162  if (noError)
163  break;
165  (const char *) mic, len);
166  }
167  *p++ = mic[1];
168  mic += 2;
169  len -= 2;
170  }
171  }
172  *p = '\0';
173 
174  return mic - start;
175 }
176 
177 
178 /*
179  * latin2mic_with_table: a generic single byte charset encoding
180  * conversion from a local charset to the mule internal code.
181  *
182  * l points to the source string of length len
183  * p is the output area (must be large enough!)
184  * lc is the mule character set id for the local encoding
185  * encoding is the PG identifier for the local encoding
186  * tab holds conversion entries for the local charset
187  * starting from 128 (0x80). each entry in the table holds the corresponding
188  * code point for the mule encoding, or 0 if there is no equivalent code.
189  *
190  * Returns the number of input bytes consumed. If noError is true, this can
191  * be less than 'len'.
192  */
193 int
194 latin2mic_with_table(const unsigned char *l,
195  unsigned char *p,
196  int len,
197  int lc,
198  int encoding,
199  const unsigned char *tab,
200  bool noError)
201 {
202  const unsigned char *start = l;
203  unsigned char c1,
204  c2;
205 
206  while (len > 0)
207  {
208  c1 = *l;
209  if (c1 == 0)
210  {
211  if (noError)
212  break;
213  report_invalid_encoding(encoding, (const char *) l, len);
214  }
215  if (!IS_HIGHBIT_SET(c1))
216  *p++ = c1;
217  else
218  {
219  c2 = tab[c1 - HIGHBIT];
220  if (c2)
221  {
222  *p++ = lc;
223  *p++ = c2;
224  }
225  else
226  {
227  if (noError)
228  break;
230  (const char *) l, len);
231  }
232  }
233  l++;
234  len--;
235  }
236  *p = '\0';
237 
238  return l - start;
239 }
240 
241 /*
242  * mic2latin_with_table: a generic single byte charset encoding
243  * conversion from the mule internal code to a local charset.
244  *
245  * mic points to the source string of length len
246  * p is the output area (must be large enough!)
247  * lc is the mule character set id for the local encoding
248  * encoding is the PG identifier for the local encoding
249  * tab holds conversion entries for the mule internal code's second byte,
250  * starting from 128 (0x80). each entry in the table holds the corresponding
251  * code point for the local charset, or 0 if there is no equivalent code.
252  *
253  * Returns the number of input bytes consumed. If noError is true, this can
254  * be less than 'len'.
255  */
256 int
257 mic2latin_with_table(const unsigned char *mic,
258  unsigned char *p,
259  int len,
260  int lc,
261  int encoding,
262  const unsigned char *tab,
263  bool noError)
264 {
265  const unsigned char *start = mic;
266  unsigned char c1,
267  c2;
268 
269  while (len > 0)
270  {
271  c1 = *mic;
272  if (c1 == 0)
273  {
274  if (noError)
275  break;
276  report_invalid_encoding(PG_MULE_INTERNAL, (const char *) mic, len);
277  }
278  if (!IS_HIGHBIT_SET(c1))
279  {
280  /* easy for ASCII */
281  *p++ = c1;
282  mic++;
283  len--;
284  }
285  else
286  {
287  int l = pg_mule_mblen(mic);
288 
289  if (len < l)
290  {
291  if (noError)
292  break;
293  report_invalid_encoding(PG_MULE_INTERNAL, (const char *) mic,
294  len);
295  }
296  if (l != 2 || c1 != lc || !IS_HIGHBIT_SET(mic[1]) ||
297  (c2 = tab[mic[1] - HIGHBIT]) == 0)
298  {
299  if (noError)
300  break;
302  (const char *) mic, len);
303  break; /* keep compiler quiet */
304  }
305  *p++ = c2;
306  mic += 2;
307  len -= 2;
308  }
309  }
310  *p = '\0';
311 
312  return mic - start;
313 }
314 
315 /*
316  * comparison routine for bsearch()
317  * this routine is intended for combined UTF8 -> local code
318  */
319 static int
320 compare3(const void *p1, const void *p2)
321 {
322  uint32 s1,
323  s2,
324  d1,
325  d2;
326 
327  s1 = *(const uint32 *) p1;
328  s2 = *((const uint32 *) p1 + 1);
329  d1 = ((const pg_utf_to_local_combined *) p2)->utf1;
330  d2 = ((const pg_utf_to_local_combined *) p2)->utf2;
331  return (s1 > d1 || (s1 == d1 && s2 > d2)) ? 1 : ((s1 == d1 && s2 == d2) ? 0 : -1);
332 }
333 
334 /*
335  * comparison routine for bsearch()
336  * this routine is intended for local code -> combined UTF8
337  */
338 static int
339 compare4(const void *p1, const void *p2)
340 {
341  uint32 v1,
342  v2;
343 
344  v1 = *(const uint32 *) p1;
345  v2 = ((const pg_local_to_utf_combined *) p2)->code;
346  return (v1 > v2) ? 1 : ((v1 == v2) ? 0 : -1);
347 }
348 
349 /*
350  * store 32bit character representation into multibyte stream
351  */
352 static inline unsigned char *
353 store_coded_char(unsigned char *dest, uint32 code)
354 {
355  if (code & 0xff000000)
356  *dest++ = code >> 24;
357  if (code & 0x00ff0000)
358  *dest++ = code >> 16;
359  if (code & 0x0000ff00)
360  *dest++ = code >> 8;
361  if (code & 0x000000ff)
362  *dest++ = code;
363  return dest;
364 }
365 
366 /*
367  * Convert a character using a conversion radix tree.
368  *
369  * 'l' is the length of the input character in bytes, and b1-b4 are
370  * the input character's bytes.
371  */
372 static inline uint32
374  int l,
375  unsigned char b1,
376  unsigned char b2,
377  unsigned char b3,
378  unsigned char b4)
379 {
380  if (l == 4)
381  {
382  /* 4-byte code */
383 
384  /* check code validity */
385  if (b1 < rt->b4_1_lower || b1 > rt->b4_1_upper ||
386  b2 < rt->b4_2_lower || b2 > rt->b4_2_upper ||
387  b3 < rt->b4_3_lower || b3 > rt->b4_3_upper ||
388  b4 < rt->b4_4_lower || b4 > rt->b4_4_upper)
389  return 0;
390 
391  /* perform lookup */
392  if (rt->chars32)
393  {
394  uint32 idx = rt->b4root;
395 
396  idx = rt->chars32[b1 + idx - rt->b4_1_lower];
397  idx = rt->chars32[b2 + idx - rt->b4_2_lower];
398  idx = rt->chars32[b3 + idx - rt->b4_3_lower];
399  return rt->chars32[b4 + idx - rt->b4_4_lower];
400  }
401  else
402  {
403  uint16 idx = rt->b4root;
404 
405  idx = rt->chars16[b1 + idx - rt->b4_1_lower];
406  idx = rt->chars16[b2 + idx - rt->b4_2_lower];
407  idx = rt->chars16[b3 + idx - rt->b4_3_lower];
408  return rt->chars16[b4 + idx - rt->b4_4_lower];
409  }
410  }
411  else if (l == 3)
412  {
413  /* 3-byte code */
414 
415  /* check code validity */
416  if (b2 < rt->b3_1_lower || b2 > rt->b3_1_upper ||
417  b3 < rt->b3_2_lower || b3 > rt->b3_2_upper ||
418  b4 < rt->b3_3_lower || b4 > rt->b3_3_upper)
419  return 0;
420 
421  /* perform lookup */
422  if (rt->chars32)
423  {
424  uint32 idx = rt->b3root;
425 
426  idx = rt->chars32[b2 + idx - rt->b3_1_lower];
427  idx = rt->chars32[b3 + idx - rt->b3_2_lower];
428  return rt->chars32[b4 + idx - rt->b3_3_lower];
429  }
430  else
431  {
432  uint16 idx = rt->b3root;
433 
434  idx = rt->chars16[b2 + idx - rt->b3_1_lower];
435  idx = rt->chars16[b3 + idx - rt->b3_2_lower];
436  return rt->chars16[b4 + idx - rt->b3_3_lower];
437  }
438  }
439  else if (l == 2)
440  {
441  /* 2-byte code */
442 
443  /* check code validity - first byte */
444  if (b3 < rt->b2_1_lower || b3 > rt->b2_1_upper ||
445  b4 < rt->b2_2_lower || b4 > rt->b2_2_upper)
446  return 0;
447 
448  /* perform lookup */
449  if (rt->chars32)
450  {
451  uint32 idx = rt->b2root;
452 
453  idx = rt->chars32[b3 + idx - rt->b2_1_lower];
454  return rt->chars32[b4 + idx - rt->b2_2_lower];
455  }
456  else
457  {
458  uint16 idx = rt->b2root;
459 
460  idx = rt->chars16[b3 + idx - rt->b2_1_lower];
461  return rt->chars16[b4 + idx - rt->b2_2_lower];
462  }
463  }
464  else if (l == 1)
465  {
466  /* 1-byte code */
467 
468  /* check code validity - first byte */
469  if (b4 < rt->b1_lower || b4 > rt->b1_upper)
470  return 0;
471 
472  /* perform lookup */
473  if (rt->chars32)
474  return rt->chars32[b4 + rt->b1root - rt->b1_lower];
475  else
476  return rt->chars16[b4 + rt->b1root - rt->b1_lower];
477  }
478  return 0; /* shouldn't happen */
479 }
480 
481 /*
482  * UTF8 ---> local code
483  *
484  * utf: input string in UTF8 encoding (need not be null-terminated)
485  * len: length of input string (in bytes)
486  * iso: pointer to the output area (must be large enough!)
487  (output string will be null-terminated)
488  * map: conversion map for single characters
489  * cmap: conversion map for combined characters
490  * (optional, pass NULL if none)
491  * cmapsize: number of entries in the conversion map for combined characters
492  * (optional, pass 0 if none)
493  * conv_func: algorithmic encoding conversion function
494  * (optional, pass NULL if none)
495  * encoding: PG identifier for the local encoding
496  *
497  * For each character, the cmap (if provided) is consulted first; if no match,
498  * the map is consulted next; if still no match, the conv_func (if provided)
499  * is applied. An error is raised if no match is found.
500  *
501  * See pg_wchar.h for more details about the data structures used here.
502  *
503  * Returns the number of input bytes consumed. If noError is true, this can
504  * be less than 'len'.
505  */
506 int
507 UtfToLocal(const unsigned char *utf, int len,
508  unsigned char *iso,
509  const pg_mb_radix_tree *map,
510  const pg_utf_to_local_combined *cmap, int cmapsize,
511  utf_local_conversion_func conv_func,
512  int encoding, bool noError)
513 {
514  uint32 iutf;
515  int l;
516  const pg_utf_to_local_combined *cp;
517  const unsigned char *start = utf;
518 
519  if (!PG_VALID_ENCODING(encoding))
520  ereport(ERROR,
521  (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
522  errmsg("invalid encoding number: %d", encoding)));
523 
524  for (; len > 0; len -= l)
525  {
526  unsigned char b1 = 0;
527  unsigned char b2 = 0;
528  unsigned char b3 = 0;
529  unsigned char b4 = 0;
530 
531  /* "break" cases all represent errors */
532  if (*utf == '\0')
533  break;
534 
535  l = pg_utf_mblen(utf);
536  if (len < l)
537  break;
538 
539  if (!pg_utf8_islegal(utf, l))
540  break;
541 
542  if (l == 1)
543  {
544  /* ASCII case is easy, assume it's one-to-one conversion */
545  *iso++ = *utf++;
546  continue;
547  }
548 
549  /* collect coded char of length l */
550  if (l == 2)
551  {
552  b3 = *utf++;
553  b4 = *utf++;
554  }
555  else if (l == 3)
556  {
557  b2 = *utf++;
558  b3 = *utf++;
559  b4 = *utf++;
560  }
561  else if (l == 4)
562  {
563  b1 = *utf++;
564  b2 = *utf++;
565  b3 = *utf++;
566  b4 = *utf++;
567  }
568  else
569  {
570  elog(ERROR, "unsupported character length %d", l);
571  iutf = 0; /* keep compiler quiet */
572  }
573  iutf = (b1 << 24 | b2 << 16 | b3 << 8 | b4);
574 
575  /* First, try with combined map if possible */
576  if (cmap && len > l)
577  {
578  const unsigned char *utf_save = utf;
579  int len_save = len;
580  int l_save = l;
581 
582  /* collect next character, same as above */
583  len -= l;
584 
585  l = pg_utf_mblen(utf);
586  if (len < l)
587  {
588  /* need more data to decide if this is a combined char */
589  utf -= l_save;
590  break;
591  }
592 
593  if (!pg_utf8_islegal(utf, l))
594  {
595  if (!noError)
596  report_invalid_encoding(PG_UTF8, (const char *) utf, len);
597  utf -= l_save;
598  break;
599  }
600 
601  /* We assume ASCII character cannot be in combined map */
602  if (l > 1)
603  {
604  uint32 iutf2;
605  uint32 cutf[2];
606 
607  if (l == 2)
608  {
609  iutf2 = *utf++ << 8;
610  iutf2 |= *utf++;
611  }
612  else if (l == 3)
613  {
614  iutf2 = *utf++ << 16;
615  iutf2 |= *utf++ << 8;
616  iutf2 |= *utf++;
617  }
618  else if (l == 4)
619  {
620  iutf2 = *utf++ << 24;
621  iutf2 |= *utf++ << 16;
622  iutf2 |= *utf++ << 8;
623  iutf2 |= *utf++;
624  }
625  else
626  {
627  elog(ERROR, "unsupported character length %d", l);
628  iutf2 = 0; /* keep compiler quiet */
629  }
630 
631  cutf[0] = iutf;
632  cutf[1] = iutf2;
633 
634  cp = bsearch(cutf, cmap, cmapsize,
636 
637  if (cp)
638  {
639  iso = store_coded_char(iso, cp->code);
640  continue;
641  }
642  }
643 
644  /* fail, so back up to reprocess second character next time */
645  utf = utf_save;
646  len = len_save;
647  l = l_save;
648  }
649 
650  /* Now check ordinary map */
651  if (map)
652  {
653  uint32 converted = pg_mb_radix_conv(map, l, b1, b2, b3, b4);
654 
655  if (converted)
656  {
657  iso = store_coded_char(iso, converted);
658  continue;
659  }
660  }
661 
662  /* if there's a conversion function, try that */
663  if (conv_func)
664  {
665  uint32 converted = (*conv_func) (iutf);
666 
667  if (converted)
668  {
669  iso = store_coded_char(iso, converted);
670  continue;
671  }
672  }
673 
674  /* failed to translate this character */
675  utf -= l;
676  if (noError)
677  break;
679  (const char *) utf, len);
680  }
681 
682  /* if we broke out of loop early, must be invalid input */
683  if (len > 0 && !noError)
684  report_invalid_encoding(PG_UTF8, (const char *) utf, len);
685 
686  *iso = '\0';
687 
688  return utf - start;
689 }
690 
691 /*
692  * local code ---> UTF8
693  *
694  * iso: input string in local encoding (need not be null-terminated)
695  * len: length of input string (in bytes)
696  * utf: pointer to the output area (must be large enough!)
697  (output string will be null-terminated)
698  * map: conversion map for single characters
699  * cmap: conversion map for combined characters
700  * (optional, pass NULL if none)
701  * cmapsize: number of entries in the conversion map for combined characters
702  * (optional, pass 0 if none)
703  * conv_func: algorithmic encoding conversion function
704  * (optional, pass NULL if none)
705  * encoding: PG identifier for the local encoding
706  *
707  * For each character, the map is consulted first; if no match, the cmap
708  * (if provided) is consulted next; if still no match, the conv_func
709  * (if provided) is applied. An error is raised if no match is found.
710  *
711  * See pg_wchar.h for more details about the data structures used here.
712  *
713  * Returns the number of input bytes consumed. If noError is true, this can
714  * be less than 'len'.
715  */
716 int
717 LocalToUtf(const unsigned char *iso, int len,
718  unsigned char *utf,
719  const pg_mb_radix_tree *map,
720  const pg_local_to_utf_combined *cmap, int cmapsize,
721  utf_local_conversion_func conv_func,
722  int encoding,
723  bool noError)
724 {
725  uint32 iiso;
726  int l;
727  const pg_local_to_utf_combined *cp;
728  const unsigned char *start = iso;
729 
730  if (!PG_VALID_ENCODING(encoding))
731  ereport(ERROR,
732  (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
733  errmsg("invalid encoding number: %d", encoding)));
734 
735  for (; len > 0; len -= l)
736  {
737  unsigned char b1 = 0;
738  unsigned char b2 = 0;
739  unsigned char b3 = 0;
740  unsigned char b4 = 0;
741 
742  /* "break" cases all represent errors */
743  if (*iso == '\0')
744  break;
745 
746  if (!IS_HIGHBIT_SET(*iso))
747  {
748  /* ASCII case is easy, assume it's one-to-one conversion */
749  *utf++ = *iso++;
750  l = 1;
751  continue;
752  }
753 
754  l = pg_encoding_verifymbchar(encoding, (const char *) iso, len);
755  if (l < 0)
756  break;
757 
758  /* collect coded char of length l */
759  if (l == 1)
760  b4 = *iso++;
761  else if (l == 2)
762  {
763  b3 = *iso++;
764  b4 = *iso++;
765  }
766  else if (l == 3)
767  {
768  b2 = *iso++;
769  b3 = *iso++;
770  b4 = *iso++;
771  }
772  else if (l == 4)
773  {
774  b1 = *iso++;
775  b2 = *iso++;
776  b3 = *iso++;
777  b4 = *iso++;
778  }
779  else
780  {
781  elog(ERROR, "unsupported character length %d", l);
782  iiso = 0; /* keep compiler quiet */
783  }
784  iiso = (b1 << 24 | b2 << 16 | b3 << 8 | b4);
785 
786  if (map)
787  {
788  uint32 converted = pg_mb_radix_conv(map, l, b1, b2, b3, b4);
789 
790  if (converted)
791  {
792  utf = store_coded_char(utf, converted);
793  continue;
794  }
795 
796  /* If there's a combined character map, try that */
797  if (cmap)
798  {
799  cp = bsearch(&iiso, cmap, cmapsize,
801 
802  if (cp)
803  {
804  utf = store_coded_char(utf, cp->utf1);
805  utf = store_coded_char(utf, cp->utf2);
806  continue;
807  }
808  }
809  }
810 
811  /* if there's a conversion function, try that */
812  if (conv_func)
813  {
814  uint32 converted = (*conv_func) (iiso);
815 
816  if (converted)
817  {
818  utf = store_coded_char(utf, converted);
819  continue;
820  }
821  }
822 
823  /* failed to translate this character */
824  iso -= l;
825  if (noError)
826  break;
828  (const char *) iso, len);
829  }
830 
831  /* if we broke out of loop early, must be invalid input */
832  if (len > 0 && !noError)
833  report_invalid_encoding(encoding, (const char *) iso, len);
834 
835  *utf = '\0';
836 
837  return iso - start;
838 }
uint8 b2_2_upper
Definition: pg_wchar.h:470
uint8 b4_2_lower
Definition: pg_wchar.h:485
const uint16 * chars16
Definition: pg_wchar.h:457
bool pg_utf8_islegal(const unsigned char *source, int length)
Definition: wchar.c:1797
static int compare4(const void *p1, const void *p2)
Definition: conv.c:339
uint8 b2_1_lower
Definition: pg_wchar.h:467
uint8 b4_4_upper
Definition: pg_wchar.h:490
int pg_mule_mblen(const unsigned char *s)
Definition: wchar.c:832
void report_invalid_encoding(int encoding, const char *mbstr, int len)
Definition: mbutils.c:1647
int UtfToLocal(const unsigned char *utf, int len, unsigned char *iso, const pg_mb_radix_tree *map, const pg_utf_to_local_combined *cmap, int cmapsize, utf_local_conversion_func conv_func, int encoding, bool noError)
Definition: conv.c:507
int errcode(int sqlerrcode)
Definition: elog.c:698
Datum idx(PG_FUNCTION_ARGS)
Definition: _int_op.c:259
static unsigned char * store_coded_char(unsigned char *dest, uint32 code)
Definition: conv.c:353
int local2local(const unsigned char *l, unsigned char *p, int len, int src_encoding, int dest_encoding, const unsigned char *tab, bool noError)
Definition: conv.c:33
const uint32 * chars32
Definition: pg_wchar.h:458
uint8 b4_3_upper
Definition: pg_wchar.h:488
uint8 b4_4_lower
Definition: pg_wchar.h:489
uint8 b3_1_lower
Definition: pg_wchar.h:474
uint32(* utf_local_conversion_func)(uint32 code)
Definition: pg_wchar.h:519
unsigned short uint16
Definition: c.h:440
int latin2mic_with_table(const unsigned char *l, unsigned char *p, int len, int lc, int encoding, const unsigned char *tab, bool noError)
Definition: conv.c:194
#define IS_HIGHBIT_SET(ch)
Definition: c.h:1156
uint8 b3_1_upper
Definition: pg_wchar.h:475
#define ERROR
Definition: elog.h:46
char * s1
#define PG_VALID_ENCODING(_enc)
Definition: pg_wchar.h:301
static uint32 pg_mb_radix_conv(const pg_mb_radix_tree *rt, int l, unsigned char b1, unsigned char b2, unsigned char b3, unsigned char b4)
Definition: conv.c:373
uint8 b4_2_upper
Definition: pg_wchar.h:486
unsigned int uint32
Definition: c.h:441
uint8 b3_2_upper
Definition: pg_wchar.h:477
#define HIGHBIT
Definition: c.h:1155
int latin2mic(const unsigned char *l, unsigned char *p, int len, int lc, int encoding, bool noError)
Definition: conv.c:89
char * s2
uint8 b3_2_lower
Definition: pg_wchar.h:476
int mic2latin(const unsigned char *mic, unsigned char *p, int len, int lc, int encoding, bool noError)
Definition: conv.c:127
int mic2latin_with_table(const unsigned char *mic, unsigned char *p, int len, int lc, int encoding, const unsigned char *tab, bool noError)
Definition: conv.c:257
#define ereport(elevel,...)
Definition: elog.h:157
uint8 b3_3_upper
Definition: pg_wchar.h:479
static int compare3(const void *p1, const void *p2)
Definition: conv.c:320
uint8 b2_2_lower
Definition: pg_wchar.h:469
uint8 b4_1_upper
Definition: pg_wchar.h:484
int32 encoding
Definition: pg_database.h:41
void report_untranslatable_char(int src_encoding, int dest_encoding, const char *mbstr, int len)
Definition: mbutils.c:1679
uint8 b4_3_lower
Definition: pg_wchar.h:487
uint8 b2_1_upper
Definition: pg_wchar.h:468
int pg_encoding_verifymbchar(int encoding, const char *mbstr, int len)
Definition: wchar.c:1948
int pg_utf_mblen(const unsigned char *s)
Definition: wchar.c:549
int errmsg(const char *fmt,...)
Definition: elog.c:909
uint8 b3_3_lower
Definition: pg_wchar.h:478
uint8 b4_1_lower
Definition: pg_wchar.h:483
#define elog(elevel,...)
Definition: elog.h:232
int LocalToUtf(const unsigned char *iso, int len, unsigned char *utf, const pg_mb_radix_tree *map, const pg_local_to_utf_combined *cmap, int cmapsize, utf_local_conversion_func conv_func, int encoding, bool noError)
Definition: conv.c:717