PostgreSQL Source Code: src/fe_utils/string_utils.c Source File (original) (raw)
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17
18#include <ctype.h>
19
23
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26
29
30static int fmtIdEncoding = -1;
31
32
33
34
35
36
37
38
39
40
43{
45
46 if (id_return)
47 {
48
50 }
51 else
52 {
53
55 }
56
57 return id_return;
58}
59
60
61
62
63
64
65
66
67
68void
70{
72}
73
74
75
76
77static int
79{
80 if (fmtIdEncoding != -1)
81 return fmtIdEncoding;
82
83
84
85
86
87
88
89 Assert(fmtIdEncoding != -1);
90
92}
93
94
95
96
97
98
99
100const char *
102{
104
105 const char *cp;
106 bool need_quotes = false;
107 size_t remaining = strlen(rawid);
108
109
110
111
112
114 need_quotes = true;
115
116 else if (!((rawid[0] >= 'a' && rawid[0] <= 'z') || rawid[0] == '_'))
117 need_quotes = true;
118 else
119 {
120
121 cp = rawid;
123 {
124 if (!((*cp >= 'a' && *cp <= 'z')
125 || (*cp >= '0' && *cp <= '9')
126 || (*cp == '_')))
127 {
128 need_quotes = true;
129 break;
130 }
131 }
132 }
133
134 if (!need_quotes)
135 {
136
137
138
139
140
141
142
143
145
147 need_quotes = true;
148 }
149
150 if (!need_quotes)
151 {
152
154 }
155 else
156 {
158
159 cp = &rawid[0];
161 {
162 int charlen;
163
164
166 {
167
168
169
170
171
172 if (*cp == '"')
176 cp++;
177 continue;
178 }
179
180
182
185 {
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
204 {
206 id_return->data + id_return->len);
207 id_return->len += 2;
208 id_return->data[id_return->len] = '\0';
209 }
210
211
212
213
214
215
216
218 cp++;
219 }
220 else
221 {
222 for (int i = 0; i < charlen; i++)
223 {
226 cp++;
227 }
228 }
229 }
230
232 }
233
234 return id_return->data;
235}
236
237
238
239
240
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244
245
246
247const char *
249{
251}
252
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259
260
261
262const char *
264{
267
268
269 if (schema && *schema)
270 {
272 }
274
276
279
280 return id_return->data;
281}
282
283
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289
290
291
292
293
294
295const char *
297{
299}
300
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308
309
310
311
312char *
314 char *buf, size_t buflen)
315{
316 if (version_number >= 100000)
317 {
318
319 if (include_minor)
320 snprintf(buf, buflen, "%d.%d", version_number / 10000,
321 version_number % 10000);
322 else
323 snprintf(buf, buflen, "%d", version_number / 10000);
324 }
325 else
326 {
327
328 if (include_minor)
329 snprintf(buf, buflen, "%d.%d.%d", version_number / 10000,
330 (version_number / 100) % 100,
331 version_number % 100);
332 else
333 snprintf(buf, buflen, "%d.%d", version_number / 10000,
334 (version_number / 100) % 100);
335 }
336 return buf;
337}
338
339
340
341
342
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347
348
349
350void
352 int encoding, bool std_strings)
353{
354 size_t length = strlen(str);
356 char *target;
358
360 return;
361
362 target = buf->data + buf->len;
363 *target++ = '\'';
364
366 {
368 int charlen;
369 int i;
370
371
373 {
374
376 *target++ = c;
377
378 *target++ = c;
381 continue;
382 }
383
384
386
389 {
390
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409
411 target += 2;
412
413
414
415
416
417
420 }
421 else
422 {
423
424 for (i = 0; i < charlen; i++)
425 {
426 *target++ = *source++;
428 }
429 }
430 }
431
432
433 *target++ = '\'';
434 *target = '\0';
435
436 buf->len = target - buf->data;
437}
438
439
440
441
442
443
444
445void
447{
448 size_t length = strlen(str);
449
450
451
452
453
455 {
456
457 if (buf->len > 0 && buf->data[buf->len - 1] != ' ')
461 return;
462 }
463
464
466 return;
469 str, length, NULL);
471}
472
473
474
475
476
477
478
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480
481
482
483void
485{
486 static const char suffixes[] = "_XXXXXXX";
487 int nextchar = 0;
489
490
492 if (dqprefix)
494
495
496
497
498
499
500 while (strstr(str, delimBuf->data) != NULL)
501 {
503 nextchar %= sizeof(suffixes) - 1;
504 }
505
506
508
509
513
515}
516
517
518
519
520
521
522
523
524
525
526void
528 bool std_strings)
529{
530 const unsigned char *source = str;
531 char *target;
532
533 static const char hextbl[] = "0123456789abcdef";
534
535
536
537
538
539
540
542 return;
543
544 target = buf->data + buf->len;
545 *target++ = '\'';
546 if (!std_strings)
547 *target++ = '\\';
548 *target++ = '\\';
549 *target++ = 'x';
550
551 while (length-- > 0)
552 {
553 unsigned char c = *source++;
554
555 *target++ = hextbl[(c >> 4) & 0xF];
556 *target++ = hextbl[c & 0xF];
557 }
558
559
560 *target++ = '\'';
561 *target = '\0';
562
563 buf->len = target - buf->data;
564}
565
566
567
568
569
570
571
572
573
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575
576
577
578
579
580
581void
583{
585 {
587 _("shell command argument contains a newline or carriage return: \"%s\"\n"),
590 }
591}
592
593bool
595{
596#ifdef WIN32
597 int backslash_run_length = 0;
598#endif
599 bool ok = true;
600 const char *p;
601
602
603
604
605
606 if (*str != '\0' &&
607 strspn(str, "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-_./:") == strlen(str))
608 {
610 return ok;
611 }
612
613#ifndef WIN32
615 for (p = str; *p; p++)
616 {
617 if (*p == '\n' || *p == '\r')
618 {
619 ok = false;
620 continue;
621 }
622
623 if (*p == '\'')
625 else
627 }
629#else
630
631
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640
641
643 for (p = str; *p; p++)
644 {
645 if (*p == '\n' || *p == '\r')
646 {
647 ok = false;
648 continue;
649 }
650
651
652 if (*p == '"')
653 {
654 while (backslash_run_length)
655 {
657 backslash_run_length--;
658 }
660 }
661 else if (*p == '\\')
662 backslash_run_length++;
663 else
664 backslash_run_length = 0;
665
666
667
668
669
670 if (!((*p >= 'a' && *p <= 'z') ||
671 (*p >= 'A' && *p <= 'Z') ||
672 (*p >= '0' && *p <= '9')))
675 }
676
677
678
679
680
681 while (backslash_run_length)
682 {
684 backslash_run_length--;
685 }
687#endif
688
689 return ok;
690}
691
692
693
694
695
696
697void
699{
700 const char *s;
701 bool needquotes;
702
703
704
705
706
707 needquotes = true;
708 for (s = str; *s; s++)
709 {
710 if (!((*s >= 'a' && *s <= 'z') || (*s >= 'A' && *s <= 'Z') ||
711 (*s >= '0' && *s <= '9') || *s == '_' || *s == '.'))
712 {
713 needquotes = true;
714 break;
715 }
716 needquotes = false;
717 }
718
719 if (needquotes)
720 {
722 while (*str)
723 {
724
725 if (*str == '\'' || *str == '\\')
727
730 }
732 }
733 else
735}
736
737
738
739
740
741
742void
744{
745 const char *s;
746 bool complex;
747
748
749
750
751
752
753 complex = false;
754
755 for (s = dbname; *s; s++)
756 {
757 if (*s == '\n' || *s == '\r')
758 {
760 _("database name contains a newline or carriage return: \"%s\"\n"),
763 }
764
765 if (!((*s >= 'a' && *s <= 'z') || (*s >= 'A' && *s <= 'Z') ||
766 (*s >= '0' && *s <= '9') || *s == '_' || *s == '.'))
767 {
768 complex = true;
769 }
770 }
771
772 if (complex)
773 {
775
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788
789
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796
798 }
799 else
800 {
803 }
805}
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818bool
820{
821 int inputlen;
823 char *strings;
824 int curitem;
825
826
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832
833
834
835
836 *itemarray = NULL;
838 inputlen = strlen(atext);
839 if (inputlen < 2 || atext[0] != '{' || atext[inputlen - 1] != '}')
840 return false;
841 items = (char **) malloc(inputlen * (sizeof(char *) + sizeof(char)));
842 if (items == NULL)
843 return false;
844 *itemarray = items;
845 strings = (char *) (items + inputlen);
846
847 atext++;
848 curitem = 0;
849 while (*atext != '}')
850 {
851 if (*atext == '\0')
852 return false;
853 items[curitem] = strings;
854 while (*atext != '}' && *atext != ',')
855 {
856 if (*atext == '\0')
857 return false;
858 if (*atext != '"')
859 *strings++ = *atext++;
860 else
861 {
862
863 atext++;
864 while (*atext != '"')
865 {
866 if (*atext == '\0')
867 return false;
868 if (*atext == '\\')
869 {
870 atext++;
871 if (*atext == '\0')
872 return false;
873 }
874 *strings++ = *atext++;
875 }
876 atext++;
877 }
878 }
879 *strings++ = '\0';
880 if (*atext == ',')
881 atext++;
882 curitem++;
883 }
884 if (atext[1] != '\0')
885 return false;
887 return true;
888}
889
890
891
892
893
894
895
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898
899
900
901void
903{
904 bool needquote;
905 const char *tmp;
906
907 if (buffer->data[buffer->len - 1] != '{')
909
910
911 if (value[0] == '\0')
912 needquote = true;
914 needquote = true;
915 else
916 needquote = false;
917
918 if (!needquote)
919 {
920 for (tmp = value; *tmp; tmp++)
921 {
922 char ch = *tmp;
923
924 if (ch == '"' || ch == '\\' ||
925 ch == '{' || ch == '}' || ch == ',' ||
926
927 ch == ' ' || ch == '\t' || ch == '\n' ||
928 ch == '\r' || ch == '\v' || ch == '\f')
929 {
930 needquote = true;
931 break;
932 }
933 }
934 }
935
936 if (needquote)
937 {
939 for (tmp = value; *tmp; tmp++)
940 {
941 char ch = *tmp;
942
943 if (ch == '"' || ch == '\\')
946 }
948 }
949 else
951}
952
953
954
955
956
957
958
959
960
961
962
963
964
965bool
967 const char *prefix, int encoding, bool std_strings)
968{
971 int i;
972
974 {
976 return false;
977 }
978
980 {
985
986
987
988
989
993 {
996 }
997 else
999
1000 if (i > 0)
1003
1004
1005
1006
1007
1008
1009
1010
1011
1014 else
1016 }
1017
1019
1020 return true;
1021}
1022
1023
1024
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1038
1039
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1049
1050
1051
1052bool
1054 bool have_where, bool force_escape,
1055 const char *schemavar, const char *namevar,
1056 const char *altnamevar, const char *visibilityrule,
1058{
1061 bool added_clause = false;
1062 int dcnt;
1063
1064#define WHEREAND() \
1065 (appendPQExpBufferStr(buf, have_where ? " AND " : "WHERE "), \
1066 have_where = true, added_clause = true)
1067
1068 if (dotcnt == NULL)
1069 dotcnt = &dcnt;
1070 *dotcnt = 0;
1071 if (pattern == NULL)
1072 {
1073
1074 if (visibilityrule)
1075 {
1078 }
1079 return added_clause;
1080 }
1081
1084
1085
1086
1087
1088
1089
1090
1091
1092
1094 (schemavar ? dbnamebuf : NULL),
1095 (schemavar ? &schemabuf : NULL),
1096 &namebuf,
1097 pattern, force_escape, true, dotcnt);
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110 if (namevar && namebuf.len > 2)
1111 {
1112
1113
1114
1115 if (strcmp(namebuf.data, "^(.*)$") != 0)
1116 {
1118 if (altnamevar)
1119 {
1121 "(%s OPERATOR(pg_catalog.~) ", namevar);
1126 "\n OR %s OPERATOR(pg_catalog.~) ",
1127 altnamevar);
1132 }
1133 else
1134 {
1140 }
1141 }
1142 }
1143
1144 if (schemavar && schemabuf.len > 2)
1145 {
1146
1147
1148
1149 if (strcmp(schemabuf.data, "^(.*)$") != 0 && schemavar)
1150 {
1157 }
1158 }
1159 else
1160 {
1161
1162 if (visibilityrule)
1163 {
1166 }
1167 }
1168
1171
1172 return added_clause;
1173#undef WHEREAND
1174}
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
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1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224void
1226 PQExpBuffer namebuf, const char *pattern, bool force_escape,
1227 bool want_literal_dbname, int *dotcnt)
1228{
1233 int i;
1234 bool inquotes;
1235 bool left;
1236 const char *cp;
1237
1238 Assert(pattern != NULL);
1239 Assert(namebuf != NULL);
1240
1241
1242 Assert(dbnamebuf == NULL || schemabuf != NULL);
1243 Assert(dotcnt != NULL);
1244
1245 *dotcnt = 0;
1246 inquotes = false;
1247 cp = pattern;
1248
1249 if (dbnamebuf != NULL)
1250 maxbuf = &buf[2];
1251 else if (schemabuf != NULL)
1252 maxbuf = &buf[1];
1253 else
1254 maxbuf = &buf[0];
1255
1256 curbuf = &buf[0];
1257 if (want_literal_dbname)
1258 {
1259 left = true;
1261 }
1262 else
1263 left = false;
1266 while (*cp)
1267 {
1268 char ch = *cp;
1269
1270 if (ch == '"')
1271 {
1272 if (inquotes && cp[1] == '"')
1273 {
1274
1276 if (left)
1278 cp++;
1279 }
1280 else
1281 inquotes = !inquotes;
1282 cp++;
1283 }
1284 else if (!inquotes && isupper((unsigned char) ch))
1285 {
1288 if (left)
1291 cp++;
1292 }
1293 else if (!inquotes && ch == '*')
1294 {
1296 if (left)
1298 cp++;
1299 }
1300 else if (!inquotes && ch == '?')
1301 {
1303 if (left)
1305 cp++;
1306 }
1307 else if (!inquotes && ch == '.')
1308 {
1309 left = false;
1310 if (dotcnt)
1311 (*dotcnt)++;
1312 if (curbuf < maxbuf)
1313 {
1315 curbuf++;
1318 cp++;
1319 }
1320 else
1322 }
1323 else if (ch == '$')
1324 {
1325
1326
1327
1328
1329
1330
1331
1333 if (left)
1335 cp++;
1336 }
1337 else
1338 {
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352 if ((inquotes || force_escape) &&
1353 strchr("|*+?()[]{}.^$\\", ch))
1355 else if (ch == '[' && cp[1] == ']')
1358 while (i--)
1359 {
1360 if (left)
1363 }
1364 }
1365 }
1367
1368 if (namebuf)
1369 {
1372 curbuf--;
1373 }
1374
1375 if (schemabuf && curbuf >= buf)
1376 {
1379 curbuf--;
1380 }
1381
1382 if (dbnamebuf && curbuf >= buf)
1383 {
1384 if (want_literal_dbname)
1386 else
1389 }
1390
1391 if (want_literal_dbname)
1393}
#define IS_HIGHBIT_SET(ch)
#define ESCAPE_STRING_SYNTAX
#define SQL_STR_DOUBLE(ch, escape_backslash)
const uint8 ScanKeywordCategories[SCANKEYWORDS_NUM_KEYWORDS]
#define fprintf(file, fmt, msg)
int PQserverVersion(const PGconn *conn)
int PQclientEncoding(const PGconn *conn)
size_t PQescapeStringConn(PGconn *conn, char *to, const char *from, size_t length, int *error)
int PQmblen(const char *s, int encoding)
int PQmblenBounded(const char *s, int encoding)
Assert(PointerIsAligned(start, uint64))
PGDLLIMPORT const ScanKeywordList ScanKeywords
#define UNRESERVED_KEYWORD
int ScanKeywordLookup(const char *str, const ScanKeywordList *keywords)
static const char * connstr
static rewind_source * source
static const char hextbl[]
int pg_strcasecmp(const char *s1, const char *s2)
unsigned char pg_tolower(unsigned char ch)
PQExpBuffer createPQExpBuffer(void)
void initPQExpBuffer(PQExpBuffer str)
int enlargePQExpBuffer(PQExpBuffer str, size_t needed)
void resetPQExpBuffer(PQExpBuffer str)
void appendPQExpBuffer(PQExpBuffer str, const char *fmt,...)
void destroyPQExpBuffer(PQExpBuffer str)
void appendPQExpBufferChar(PQExpBuffer str, char ch)
void appendPQExpBufferStr(PQExpBuffer str, const char *data)
void termPQExpBuffer(PQExpBuffer str)
PQExpBufferData * PQExpBuffer
const char * fmtQualifiedId(const char *schema, const char *id)
bool appendShellStringNoError(PQExpBuffer buf, const char *str)
const char * fmtIdEnc(const char *rawid, int encoding)
const char * fmtId(const char *rawid)
const char * fmtQualifiedIdEnc(const char *schema, const char *id, int encoding)
void setFmtEncoding(int encoding)
void appendShellString(PQExpBuffer buf, const char *str)
void appendStringLiteralConn(PQExpBuffer buf, const char *str, PGconn *conn)
void appendPGArray(PQExpBuffer buffer, const char *value)
bool processSQLNamePattern(PGconn *conn, PQExpBuffer buf, const char *pattern, bool have_where, bool force_escape, const char *schemavar, const char *namevar, const char *altnamevar, const char *visibilityrule, PQExpBuffer dbnamebuf, int *dotcnt)
void appendPsqlMetaConnect(PQExpBuffer buf, const char *dbname)
void appendByteaLiteral(PQExpBuffer buf, const unsigned char *str, size_t length, bool std_strings)
bool parsePGArray(const char *atext, char ***itemarray, int *nitems)
void appendStringLiteral(PQExpBuffer buf, const char *str, int encoding, bool std_strings)
void patternToSQLRegex(int encoding, PQExpBuffer dbnamebuf, PQExpBuffer schemabuf, PQExpBuffer namebuf, const char *pattern, bool force_escape, bool want_literal_dbname, int *dotcnt)
bool appendReloptionsArray(PQExpBuffer buffer, const char *reloptions, const char *prefix, int encoding, bool std_strings)
static PQExpBuffer defaultGetLocalPQExpBuffer(void)
static int getFmtEncoding(void)
PQExpBuffer(* getLocalPQExpBuffer)(void)
void appendStringLiteralDQ(PQExpBuffer buf, const char *str, const char *dqprefix)
void appendConnStrVal(PQExpBuffer buf, const char *str)
int quote_all_identifiers
char * formatPGVersionNumber(int version_number, bool include_minor, char *buf, size_t buflen)
void pg_encoding_set_invalid(int encoding, char *dst)
int pg_encoding_mblen(int encoding, const char *mbstr)
int pg_encoding_verifymbchar(int encoding, const char *mbstr, int len)