Annotation of embedaddon/php/ext/ereg/regex/regerror.c, revision 1.1
1.1 ! misho 1: #include <sys/types.h>
! 2: #include <stdio.h>
! 3: #include <string.h>
! 4: #include <ctype.h>
! 5: #include <limits.h>
! 6: #include <stdlib.h>
! 7:
! 8: #include "regex.h"
! 9: #include "utils.h"
! 10: #include "regerror.ih"
! 11: #include "php.h"
! 12:
! 13: /*
! 14: = #define REG_OKAY 0
! 15: = #define REG_NOMATCH 1
! 16: = #define REG_BADPAT 2
! 17: = #define REG_ECOLLATE 3
! 18: = #define REG_ECTYPE 4
! 19: = #define REG_EESCAPE 5
! 20: = #define REG_ESUBREG 6
! 21: = #define REG_EBRACK 7
! 22: = #define REG_EPAREN 8
! 23: = #define REG_EBRACE 9
! 24: = #define REG_BADBR 10
! 25: = #define REG_ERANGE 11
! 26: = #define REG_ESPACE 12
! 27: = #define REG_BADRPT 13
! 28: = #define REG_EMPTY 14
! 29: = #define REG_ASSERT 15
! 30: = #define REG_INVARG 16
! 31: = #define REG_ATOI 255 // convert name to number (!)
! 32: = #define REG_ITOA 0400 // convert number to name (!)
! 33: */
! 34: static const struct rerr {
! 35: int code;
! 36: const char *name;
! 37: const char *explain;
! 38: } rerrs[] = {
! 39: {REG_OKAY, "REG_OKAY", "no errors detected"},
! 40: {REG_NOMATCH, "REG_NOMATCH", "regexec() failed to match"},
! 41: {REG_BADPAT, "REG_BADPAT", "invalid regular expression"},
! 42: {REG_ECOLLATE, "REG_ECOLLATE", "invalid collating element"},
! 43: {REG_ECTYPE, "REG_ECTYPE", "invalid character class"},
! 44: {REG_EESCAPE, "REG_EESCAPE", "trailing backslash (\\)"},
! 45: {REG_ESUBREG, "REG_ESUBREG", "invalid backreference number"},
! 46: {REG_EBRACK, "REG_EBRACK", "brackets ([ ]) not balanced"},
! 47: {REG_EPAREN, "REG_EPAREN", "parentheses not balanced"},
! 48: {REG_EBRACE, "REG_EBRACE", "braces not balanced"},
! 49: {REG_BADBR, "REG_BADBR", "invalid repetition count(s)"},
! 50: {REG_ERANGE, "REG_ERANGE", "invalid character range"},
! 51: {REG_ESPACE, "REG_ESPACE", "out of memory"},
! 52: {REG_BADRPT, "REG_BADRPT", "repetition-operator operand invalid"},
! 53: {REG_EMPTY, "REG_EMPTY", "empty (sub)expression"},
! 54: {REG_ASSERT, "REG_ASSERT", "\"can't happen\" -- you found a bug"},
! 55: {REG_INVARG, "REG_INVARG", "invalid argument to regex routine"},
! 56: {-1, "", "*** unknown regexp error code ***"},
! 57: };
! 58:
! 59: /*
! 60: - regerror - the interface to error numbers
! 61: = API_EXPORT(size_t) regerror(int, const regex_t *, char *, size_t);
! 62: */
! 63: /* ARGSUSED */
! 64: API_EXPORT(size_t)
! 65: regerror(
! 66: int errcode,
! 67: const regex_t *preg,
! 68: char *errbuf,
! 69: size_t errbuf_size)
! 70: {
! 71: register const struct rerr *r;
! 72: register size_t len;
! 73: register int target = errcode &~ REG_ITOA;
! 74: register const char *s;
! 75: char convbuf[50];
! 76:
! 77: if (errcode == REG_ATOI)
! 78: s = regatoi(preg, convbuf, sizeof(convbuf));
! 79: else {
! 80: for (r = rerrs; r->code >= 0; r++)
! 81: if (r->code == target)
! 82: break;
! 83:
! 84: if (errcode®_ITOA) {
! 85: if (r->code >= 0) {
! 86: (void) strncpy(convbuf, r->name, sizeof(convbuf) - 1);
! 87: convbuf[sizeof(convbuf) - 1] = '\0';
! 88: } else {
! 89: snprintf(convbuf, sizeof(convbuf), "REG_0x%x", target);
! 90: }
! 91: assert(strlen(convbuf) < sizeof(convbuf));
! 92: s = convbuf;
! 93: } else
! 94: s = r->explain;
! 95: }
! 96:
! 97: len = strlen(s) + 1;
! 98: if (errbuf_size > 0) {
! 99: if (errbuf_size > len)
! 100: (void) strcpy(errbuf, s);
! 101: else {
! 102: (void) strncpy(errbuf, s, errbuf_size-1);
! 103: errbuf[errbuf_size-1] = '\0';
! 104: }
! 105: }
! 106:
! 107: return(len);
! 108: }
! 109:
! 110: /*
! 111: - regatoi - internal routine to implement REG_ATOI
! 112: == static char *regatoi(const regex_t *preg, char *localbuf, int bufsize);
! 113: */
! 114: static char *
! 115: regatoi(preg, localbuf, bufsize)
! 116: const regex_t *preg;
! 117: char *localbuf;
! 118: int bufsize;
! 119: {
! 120: register const struct rerr *r;
! 121:
! 122: for (r = rerrs; r->code >= 0; r++)
! 123: if (strcmp(r->name, preg->re_endp) == 0)
! 124: break;
! 125: if (r->code < 0)
! 126: return("0");
! 127:
! 128: snprintf(localbuf, bufsize, "%d", r->code);
! 129: return(localbuf);
! 130: }
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