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conv.c
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1 /*-------------------------------------------------------------------------
2  *
3  * Utility functions for conversion procs.
4  *
5  * Portions Copyright (c) 1996-2019, 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 void
30 local2local(const unsigned char *l,
31  unsigned char *p,
32  int len,
33  int src_encoding,
34  int dest_encoding,
35  const unsigned char *tab)
36 {
37  unsigned char c1,
38  c2;
39 
40  while (len > 0)
41  {
42  c1 = *l;
43  if (c1 == 0)
44  report_invalid_encoding(src_encoding, (const char *) l, len);
45  if (!IS_HIGHBIT_SET(c1))
46  *p++ = c1;
47  else
48  {
49  c2 = tab[c1 - HIGHBIT];
50  if (c2)
51  *p++ = c2;
52  else
53  report_untranslatable_char(src_encoding, dest_encoding,
54  (const char *) l, len);
55  }
56  l++;
57  len--;
58  }
59  *p = '\0';
60 }
61 
62 /*
63  * LATINn ---> MIC when the charset's local codes map directly to MIC
64  *
65  * l points to the source string of length len
66  * p is the output area (must be large enough!)
67  * lc is the mule character set id for the local encoding
68  * encoding is the PG identifier for the local encoding
69  */
70 void
71 latin2mic(const unsigned char *l, unsigned char *p, int len,
72  int lc, int encoding)
73 {
74  int c1;
75 
76  while (len > 0)
77  {
78  c1 = *l;
79  if (c1 == 0)
80  report_invalid_encoding(encoding, (const char *) l, len);
81  if (IS_HIGHBIT_SET(c1))
82  *p++ = lc;
83  *p++ = c1;
84  l++;
85  len--;
86  }
87  *p = '\0';
88 }
89 
90 /*
91  * MIC ---> LATINn when the charset's local codes map directly to MIC
92  *
93  * mic points to the source string of length len
94  * p is the output area (must be large enough!)
95  * lc is the mule character set id for the local encoding
96  * encoding is the PG identifier for the local encoding
97  */
98 void
99 mic2latin(const unsigned char *mic, unsigned char *p, int len,
100  int lc, int encoding)
101 {
102  int c1;
103 
104  while (len > 0)
105  {
106  c1 = *mic;
107  if (c1 == 0)
108  report_invalid_encoding(PG_MULE_INTERNAL, (const char *) mic, len);
109  if (!IS_HIGHBIT_SET(c1))
110  {
111  /* easy for ASCII */
112  *p++ = c1;
113  mic++;
114  len--;
115  }
116  else
117  {
118  int l = pg_mic_mblen(mic);
119 
120  if (len < l)
121  report_invalid_encoding(PG_MULE_INTERNAL, (const char *) mic,
122  len);
123  if (l != 2 || c1 != lc || !IS_HIGHBIT_SET(mic[1]))
125  (const char *) mic, len);
126  *p++ = mic[1];
127  mic += 2;
128  len -= 2;
129  }
130  }
131  *p = '\0';
132 }
133 
134 
135 /*
136  * latin2mic_with_table: a generic single byte charset encoding
137  * conversion from a local charset to the mule internal code.
138  *
139  * l points to the source string of length len
140  * p is the output area (must be large enough!)
141  * lc is the mule character set id for the local encoding
142  * encoding is the PG identifier for the local encoding
143  * tab holds conversion entries for the local charset
144  * starting from 128 (0x80). each entry in the table holds the corresponding
145  * code point for the mule encoding, or 0 if there is no equivalent code.
146  */
147 void
148 latin2mic_with_table(const unsigned char *l,
149  unsigned char *p,
150  int len,
151  int lc,
152  int encoding,
153  const unsigned char *tab)
154 {
155  unsigned char c1,
156  c2;
157 
158  while (len > 0)
159  {
160  c1 = *l;
161  if (c1 == 0)
162  report_invalid_encoding(encoding, (const char *) l, len);
163  if (!IS_HIGHBIT_SET(c1))
164  *p++ = c1;
165  else
166  {
167  c2 = tab[c1 - HIGHBIT];
168  if (c2)
169  {
170  *p++ = lc;
171  *p++ = c2;
172  }
173  else
175  (const char *) l, len);
176  }
177  l++;
178  len--;
179  }
180  *p = '\0';
181 }
182 
183 /*
184  * mic2latin_with_table: a generic single byte charset encoding
185  * conversion from the mule internal code to a local charset.
186  *
187  * mic points to the source string of length len
188  * p is the output area (must be large enough!)
189  * lc is the mule character set id for the local encoding
190  * encoding is the PG identifier for the local encoding
191  * tab holds conversion entries for the mule internal code's second byte,
192  * starting from 128 (0x80). each entry in the table holds the corresponding
193  * code point for the local charset, or 0 if there is no equivalent code.
194  */
195 void
196 mic2latin_with_table(const unsigned char *mic,
197  unsigned char *p,
198  int len,
199  int lc,
200  int encoding,
201  const unsigned char *tab)
202 {
203  unsigned char c1,
204  c2;
205 
206  while (len > 0)
207  {
208  c1 = *mic;
209  if (c1 == 0)
210  report_invalid_encoding(PG_MULE_INTERNAL, (const char *) mic, len);
211  if (!IS_HIGHBIT_SET(c1))
212  {
213  /* easy for ASCII */
214  *p++ = c1;
215  mic++;
216  len--;
217  }
218  else
219  {
220  int l = pg_mic_mblen(mic);
221 
222  if (len < l)
223  report_invalid_encoding(PG_MULE_INTERNAL, (const char *) mic,
224  len);
225  if (l != 2 || c1 != lc || !IS_HIGHBIT_SET(mic[1]) ||
226  (c2 = tab[mic[1] - HIGHBIT]) == 0)
227  {
229  (const char *) mic, len);
230  break; /* keep compiler quiet */
231  }
232  *p++ = c2;
233  mic += 2;
234  len -= 2;
235  }
236  }
237  *p = '\0';
238 }
239 
240 /*
241  * comparison routine for bsearch()
242  * this routine is intended for combined UTF8 -> local code
243  */
244 static int
245 compare3(const void *p1, const void *p2)
246 {
247  uint32 s1,
248  s2,
249  d1,
250  d2;
251 
252  s1 = *(const uint32 *) p1;
253  s2 = *((const uint32 *) p1 + 1);
254  d1 = ((const pg_utf_to_local_combined *) p2)->utf1;
255  d2 = ((const pg_utf_to_local_combined *) p2)->utf2;
256  return (s1 > d1 || (s1 == d1 && s2 > d2)) ? 1 : ((s1 == d1 && s2 == d2) ? 0 : -1);
257 }
258 
259 /*
260  * comparison routine for bsearch()
261  * this routine is intended for local code -> combined UTF8
262  */
263 static int
264 compare4(const void *p1, const void *p2)
265 {
266  uint32 v1,
267  v2;
268 
269  v1 = *(const uint32 *) p1;
270  v2 = ((const pg_local_to_utf_combined *) p2)->code;
271  return (v1 > v2) ? 1 : ((v1 == v2) ? 0 : -1);
272 }
273 
274 /*
275  * store 32bit character representation into multibyte stream
276  */
277 static inline unsigned char *
278 store_coded_char(unsigned char *dest, uint32 code)
279 {
280  if (code & 0xff000000)
281  *dest++ = code >> 24;
282  if (code & 0x00ff0000)
283  *dest++ = code >> 16;
284  if (code & 0x0000ff00)
285  *dest++ = code >> 8;
286  if (code & 0x000000ff)
287  *dest++ = code;
288  return dest;
289 }
290 
291 /*
292  * Convert a character using a conversion radix tree.
293  *
294  * 'l' is the length of the input character in bytes, and b1-b4 are
295  * the input character's bytes.
296  */
297 static inline uint32
299  int l,
300  unsigned char b1,
301  unsigned char b2,
302  unsigned char b3,
303  unsigned char b4)
304 {
305  if (l == 4)
306  {
307  /* 4-byte code */
308 
309  /* check code validity */
310  if (b1 < rt->b4_1_lower || b1 > rt->b4_1_upper ||
311  b2 < rt->b4_2_lower || b2 > rt->b4_2_upper ||
312  b3 < rt->b4_3_lower || b3 > rt->b4_3_upper ||
313  b4 < rt->b4_4_lower || b4 > rt->b4_4_upper)
314  return 0;
315 
316  /* perform lookup */
317  if (rt->chars32)
318  {
319  uint32 idx = rt->b4root;
320 
321  idx = rt->chars32[b1 + idx - rt->b4_1_lower];
322  idx = rt->chars32[b2 + idx - rt->b4_2_lower];
323  idx = rt->chars32[b3 + idx - rt->b4_3_lower];
324  return rt->chars32[b4 + idx - rt->b4_4_lower];
325  }
326  else
327  {
328  uint16 idx = rt->b4root;
329 
330  idx = rt->chars16[b1 + idx - rt->b4_1_lower];
331  idx = rt->chars16[b2 + idx - rt->b4_2_lower];
332  idx = rt->chars16[b3 + idx - rt->b4_3_lower];
333  return rt->chars16[b4 + idx - rt->b4_4_lower];
334  }
335  }
336  else if (l == 3)
337  {
338  /* 3-byte code */
339 
340  /* check code validity */
341  if (b2 < rt->b3_1_lower || b2 > rt->b3_1_upper ||
342  b3 < rt->b3_2_lower || b3 > rt->b3_2_upper ||
343  b4 < rt->b3_3_lower || b4 > rt->b3_3_upper)
344  return 0;
345 
346  /* perform lookup */
347  if (rt->chars32)
348  {
349  uint32 idx = rt->b3root;
350 
351  idx = rt->chars32[b2 + idx - rt->b3_1_lower];
352  idx = rt->chars32[b3 + idx - rt->b3_2_lower];
353  return rt->chars32[b4 + idx - rt->b3_3_lower];
354  }
355  else
356  {
357  uint16 idx = rt->b3root;
358 
359  idx = rt->chars16[b2 + idx - rt->b3_1_lower];
360  idx = rt->chars16[b3 + idx - rt->b3_2_lower];
361  return rt->chars16[b4 + idx - rt->b3_3_lower];
362  }
363  }
364  else if (l == 2)
365  {
366  /* 2-byte code */
367 
368  /* check code validity - first byte */
369  if (b3 < rt->b2_1_lower || b3 > rt->b2_1_upper ||
370  b4 < rt->b2_2_lower || b4 > rt->b2_2_upper)
371  return 0;
372 
373  /* perform lookup */
374  if (rt->chars32)
375  {
376  uint32 idx = rt->b2root;
377 
378  idx = rt->chars32[b3 + idx - rt->b2_1_lower];
379  return rt->chars32[b4 + idx - rt->b2_2_lower];
380  }
381  else
382  {
383  uint16 idx = rt->b2root;
384 
385  idx = rt->chars16[b3 + idx - rt->b2_1_lower];
386  return rt->chars16[b4 + idx - rt->b2_2_lower];
387  }
388  }
389  else if (l == 1)
390  {
391  /* 1-byte code */
392 
393  /* check code validity - first byte */
394  if (b4 < rt->b1_lower || b4 > rt->b1_upper)
395  return 0;
396 
397  /* perform lookup */
398  if (rt->chars32)
399  return rt->chars32[b4 + rt->b1root - rt->b1_lower];
400  else
401  return rt->chars16[b4 + rt->b1root - rt->b1_lower];
402  }
403  return 0; /* shouldn't happen */
404 }
405 
406 /*
407  * UTF8 ---> local code
408  *
409  * utf: input string in UTF8 encoding (need not be null-terminated)
410  * len: length of input string (in bytes)
411  * iso: pointer to the output area (must be large enough!)
412  (output string will be null-terminated)
413  * map: conversion map for single characters
414  * cmap: conversion map for combined characters
415  * (optional, pass NULL if none)
416  * cmapsize: number of entries in the conversion map for combined characters
417  * (optional, pass 0 if none)
418  * conv_func: algorithmic encoding conversion function
419  * (optional, pass NULL if none)
420  * encoding: PG identifier for the local encoding
421  *
422  * For each character, the cmap (if provided) is consulted first; if no match,
423  * the map is consulted next; if still no match, the conv_func (if provided)
424  * is applied. An error is raised if no match is found.
425  *
426  * See pg_wchar.h for more details about the data structures used here.
427  */
428 void
429 UtfToLocal(const unsigned char *utf, int len,
430  unsigned char *iso,
431  const pg_mb_radix_tree *map,
432  const pg_utf_to_local_combined *cmap, int cmapsize,
433  utf_local_conversion_func conv_func,
434  int encoding)
435 {
436  uint32 iutf;
437  int l;
438  const pg_utf_to_local_combined *cp;
439 
440  if (!PG_VALID_ENCODING(encoding))
441  ereport(ERROR,
442  (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
443  errmsg("invalid encoding number: %d", encoding)));
444 
445  for (; len > 0; len -= l)
446  {
447  unsigned char b1 = 0;
448  unsigned char b2 = 0;
449  unsigned char b3 = 0;
450  unsigned char b4 = 0;
451 
452  /* "break" cases all represent errors */
453  if (*utf == '\0')
454  break;
455 
456  l = pg_utf_mblen(utf);
457  if (len < l)
458  break;
459 
460  if (!pg_utf8_islegal(utf, l))
461  break;
462 
463  if (l == 1)
464  {
465  /* ASCII case is easy, assume it's one-to-one conversion */
466  *iso++ = *utf++;
467  continue;
468  }
469 
470  /* collect coded char of length l */
471  if (l == 2)
472  {
473  b3 = *utf++;
474  b4 = *utf++;
475  }
476  else if (l == 3)
477  {
478  b2 = *utf++;
479  b3 = *utf++;
480  b4 = *utf++;
481  }
482  else if (l == 4)
483  {
484  b1 = *utf++;
485  b2 = *utf++;
486  b3 = *utf++;
487  b4 = *utf++;
488  }
489  else
490  {
491  elog(ERROR, "unsupported character length %d", l);
492  iutf = 0; /* keep compiler quiet */
493  }
494  iutf = (b1 << 24 | b2 << 16 | b3 << 8 | b4);
495 
496  /* First, try with combined map if possible */
497  if (cmap && len > l)
498  {
499  const unsigned char *utf_save = utf;
500  int len_save = len;
501  int l_save = l;
502 
503  /* collect next character, same as above */
504  len -= l;
505 
506  l = pg_utf_mblen(utf);
507  if (len < l)
508  break;
509 
510  if (!pg_utf8_islegal(utf, l))
511  break;
512 
513  /* We assume ASCII character cannot be in combined map */
514  if (l > 1)
515  {
516  uint32 iutf2;
517  uint32 cutf[2];
518 
519  if (l == 2)
520  {
521  iutf2 = *utf++ << 8;
522  iutf2 |= *utf++;
523  }
524  else if (l == 3)
525  {
526  iutf2 = *utf++ << 16;
527  iutf2 |= *utf++ << 8;
528  iutf2 |= *utf++;
529  }
530  else if (l == 4)
531  {
532  iutf2 = *utf++ << 24;
533  iutf2 |= *utf++ << 16;
534  iutf2 |= *utf++ << 8;
535  iutf2 |= *utf++;
536  }
537  else
538  {
539  elog(ERROR, "unsupported character length %d", l);
540  iutf2 = 0; /* keep compiler quiet */
541  }
542 
543  cutf[0] = iutf;
544  cutf[1] = iutf2;
545 
546  cp = bsearch(cutf, cmap, cmapsize,
548 
549  if (cp)
550  {
551  iso = store_coded_char(iso, cp->code);
552  continue;
553  }
554  }
555 
556  /* fail, so back up to reprocess second character next time */
557  utf = utf_save;
558  len = len_save;
559  l = l_save;
560  }
561 
562  /* Now check ordinary map */
563  if (map)
564  {
565  uint32 converted = pg_mb_radix_conv(map, l, b1, b2, b3, b4);
566 
567  if (converted)
568  {
569  iso = store_coded_char(iso, converted);
570  continue;
571  }
572  }
573 
574  /* if there's a conversion function, try that */
575  if (conv_func)
576  {
577  uint32 converted = (*conv_func) (iutf);
578 
579  if (converted)
580  {
581  iso = store_coded_char(iso, converted);
582  continue;
583  }
584  }
585 
586  /* failed to translate this character */
588  (const char *) (utf - l), len);
589  }
590 
591  /* if we broke out of loop early, must be invalid input */
592  if (len > 0)
593  report_invalid_encoding(PG_UTF8, (const char *) utf, len);
594 
595  *iso = '\0';
596 }
597 
598 /*
599  * local code ---> UTF8
600  *
601  * iso: input string in local encoding (need not be null-terminated)
602  * len: length of input string (in bytes)
603  * utf: pointer to the output area (must be large enough!)
604  (output string will be null-terminated)
605  * map: conversion map for single characters
606  * cmap: conversion map for combined characters
607  * (optional, pass NULL if none)
608  * cmapsize: number of entries in the conversion map for combined characters
609  * (optional, pass 0 if none)
610  * conv_func: algorithmic encoding conversion function
611  * (optional, pass NULL if none)
612  * encoding: PG identifier for the local encoding
613  *
614  * For each character, the map is consulted first; if no match, the cmap
615  * (if provided) is consulted next; if still no match, the conv_func
616  * (if provided) is applied. An error is raised if no match is found.
617  *
618  * See pg_wchar.h for more details about the data structures used here.
619  */
620 void
621 LocalToUtf(const unsigned char *iso, int len,
622  unsigned char *utf,
623  const pg_mb_radix_tree *map,
624  const pg_local_to_utf_combined *cmap, int cmapsize,
625  utf_local_conversion_func conv_func,
626  int encoding)
627 {
628  uint32 iiso;
629  int l;
630  const pg_local_to_utf_combined *cp;
631 
632  if (!PG_VALID_ENCODING(encoding))
633  ereport(ERROR,
634  (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
635  errmsg("invalid encoding number: %d", encoding)));
636 
637  for (; len > 0; len -= l)
638  {
639  unsigned char b1 = 0;
640  unsigned char b2 = 0;
641  unsigned char b3 = 0;
642  unsigned char b4 = 0;
643 
644  /* "break" cases all represent errors */
645  if (*iso == '\0')
646  break;
647 
648  if (!IS_HIGHBIT_SET(*iso))
649  {
650  /* ASCII case is easy, assume it's one-to-one conversion */
651  *utf++ = *iso++;
652  l = 1;
653  continue;
654  }
655 
656  l = pg_encoding_verifymb(encoding, (const char *) iso, len);
657  if (l < 0)
658  break;
659 
660  /* collect coded char of length l */
661  if (l == 1)
662  b4 = *iso++;
663  else if (l == 2)
664  {
665  b3 = *iso++;
666  b4 = *iso++;
667  }
668  else if (l == 3)
669  {
670  b2 = *iso++;
671  b3 = *iso++;
672  b4 = *iso++;
673  }
674  else if (l == 4)
675  {
676  b1 = *iso++;
677  b2 = *iso++;
678  b3 = *iso++;
679  b4 = *iso++;
680  }
681  else
682  {
683  elog(ERROR, "unsupported character length %d", l);
684  iiso = 0; /* keep compiler quiet */
685  }
686  iiso = (b1 << 24 | b2 << 16 | b3 << 8 | b4);
687 
688  if (map)
689  {
690  uint32 converted = pg_mb_radix_conv(map, l, b1, b2, b3, b4);
691 
692  if (converted)
693  {
694  utf = store_coded_char(utf, converted);
695  continue;
696  }
697 
698  /* If there's a combined character map, try that */
699  if (cmap)
700  {
701  cp = bsearch(&iiso, cmap, cmapsize,
703 
704  if (cp)
705  {
706  utf = store_coded_char(utf, cp->utf1);
707  utf = store_coded_char(utf, cp->utf2);
708  continue;
709  }
710  }
711  }
712 
713  /* if there's a conversion function, try that */
714  if (conv_func)
715  {
716  uint32 converted = (*conv_func) (iiso);
717 
718  if (converted)
719  {
720  utf = store_coded_char(utf, converted);
721  continue;
722  }
723  }
724 
725  /* failed to translate this character */
727  (const char *) (iso - l), len);
728  }
729 
730  /* if we broke out of loop early, must be invalid input */
731  if (len > 0)
732  report_invalid_encoding(encoding, (const char *) iso, len);
733 
734  *utf = '\0';
735 }
void 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)
Definition: conv.c:429
uint8 b2_2_upper
Definition: pg_wchar.h:446
uint8 b4_2_lower
Definition: pg_wchar.h:461
const uint16 * chars16
Definition: pg_wchar.h:433
bool pg_utf8_islegal(const unsigned char *source, int length)
Definition: wchar.c:1506
static int compare4(const void *p1, const void *p2)
Definition: conv.c:264
uint8 b2_1_lower
Definition: pg_wchar.h:443
uint8 b4_4_upper
Definition: pg_wchar.h:466
int errcode(int sqlerrcode)
Definition: elog.c:608
Datum idx(PG_FUNCTION_ARGS)
Definition: _int_op.c:263
static unsigned char * store_coded_char(unsigned char *dest, uint32 code)
Definition: conv.c:278
int pg_mic_mblen(const unsigned char *mbstr)
Definition: wchar.c:1824
int pg_encoding_verifymb(int encoding, const char *mbstr, int len)
Definition: wchar.c:1857
const uint32 * chars32
Definition: pg_wchar.h:434
uint8 b4_3_upper
Definition: pg_wchar.h:464
void latin2mic_with_table(const unsigned char *l, unsigned char *p, int len, int lc, int encoding, const unsigned char *tab)
Definition: conv.c:148
uint8 b4_4_lower
Definition: pg_wchar.h:465
uint8 b3_1_lower
Definition: pg_wchar.h:450
uint32(* utf_local_conversion_func)(uint32 code)
Definition: pg_wchar.h:495
unsigned short uint16
Definition: c.h:358
#define IS_HIGHBIT_SET(ch)
Definition: c.h:1100
uint8 b3_1_upper
Definition: pg_wchar.h:451
#define ERROR
Definition: elog.h:43
char * s1
void latin2mic(const unsigned char *l, unsigned char *p, int len, int lc, int encoding)
Definition: conv.c:71
void report_untranslatable_char(int src_encoding, int dest_encoding, const char *mbstr, int len)
Definition: wchar.c:2075
#define PG_VALID_ENCODING(_enc)
Definition: pg_wchar.h:301
void 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)
Definition: conv.c:621
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:298
uint8 b4_2_upper
Definition: pg_wchar.h:462
unsigned int uint32
Definition: c.h:359
uint8 b3_2_upper
Definition: pg_wchar.h:453
#define ereport(elevel, rest)
Definition: elog.h:141
#define HIGHBIT
Definition: c.h:1099
void mic2latin(const unsigned char *mic, unsigned char *p, int len, int lc, int encoding)
Definition: conv.c:99
char * s2
uint8 b3_2_lower
Definition: pg_wchar.h:452
void mic2latin_with_table(const unsigned char *mic, unsigned char *p, int len, int lc, int encoding, const unsigned char *tab)
Definition: conv.c:196
uint8 b3_3_upper
Definition: pg_wchar.h:455
static int compare3(const void *p1, const void *p2)
Definition: conv.c:245
void local2local(const unsigned char *l, unsigned char *p, int len, int src_encoding, int dest_encoding, const unsigned char *tab)
Definition: conv.c:30
uint8 b2_2_lower
Definition: pg_wchar.h:445
uint8 b4_1_upper
Definition: pg_wchar.h:460
int32 encoding
Definition: pg_database.h:41
void report_invalid_encoding(int encoding, const char *mbstr, int len)
Definition: wchar.c:2043
uint8 b4_3_lower
Definition: pg_wchar.h:463
uint8 b2_1_upper
Definition: pg_wchar.h:444
int pg_utf_mblen(const unsigned char *s)
Definition: wchar.c:548
int errmsg(const char *fmt,...)
Definition: elog.c:822
uint8 b3_3_lower
Definition: pg_wchar.h:454
uint8 b4_1_lower
Definition: pg_wchar.h:459
#define elog(elevel,...)
Definition: elog.h:228