X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/294645ebe84bd7004a526e74bd47addd72a1222e..594f0f5bf1355fb8d58f403d3ebacc1c1767c429:/src/regex/regerror.c diff --git a/src/regex/regerror.c b/src/regex/regerror.c index aca13aade0..1bb1ec1ce8 100644 --- a/src/regex/regerror.c +++ b/src/regex/regerror.c @@ -1,109 +1,126 @@ -/* - * regerror - error-code expansion - * - * Copyright (c) 1998, 1999 Henry Spencer. All rights reserved. - * - * Development of this software was funded, in part, by Cray Research Inc., - * UUNET Communications Services Inc., Sun Microsystems Inc., and Scriptics - * Corporation, none of whom are responsible for the results. The author - * thanks all of them. - * - * Redistribution and use in source and binary forms -- with or without - * modification -- are permitted for any purpose, provided that - * redistributions in source form retain this entire copyright notice and - * indicate the origin and nature of any modifications. - * - * I'd appreciate being given credit for this package in the documentation - * of software which uses it, but that is not a requirement. - * - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, - * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY - * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL - * HENRY SPENCER BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; - * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, - * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR - * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF - * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - */ - -#include "regguts.h" +#include +#include +#include +#include +#include +#include +#include "regex.h" -/* unknown-error explanation */ -static char unk[] = "*** unknown regex error code 0x%x ***"; +#include "utils.h" +#include "regerror.ih" -/* struct to map among codes, code names, and explanations */ +/* + = #define REG_OKAY 0 + = #define REG_NOMATCH 1 + = #define REG_BADPAT 2 + = #define REG_ECOLLATE 3 + = #define REG_ECTYPE 4 + = #define REG_EESCAPE 5 + = #define REG_ESUBREG 6 + = #define REG_EBRACK 7 + = #define REG_EPAREN 8 + = #define REG_EBRACE 9 + = #define REG_BADBR 10 + = #define REG_ERANGE 11 + = #define REG_ESPACE 12 + = #define REG_BADRPT 13 + = #define REG_EMPTY 14 + = #define REG_ASSERT 15 + = #define REG_INVARG 16 + = #define REG_ATOI 255 // convert name to number (!) + = #define REG_ITOA 0400 // convert number to name (!) + */ static struct rerr { int code; char *name; char *explain; } rerrs[] = { - /* the actual table is built from regex.h */ -# include "regerrs.h" - { -1, "", "oops" }, /* explanation special-cased in code */ + { REG_OKAY, "REG_OKAY", "no errors detected" }, + { REG_NOMATCH, "REG_NOMATCH", "regexec() failed to match" }, + { REG_BADPAT, "REG_BADPAT", "invalid regular expression" }, + { REG_ECOLLATE, "REG_ECOLLATE", "invalid collating element" }, + { REG_ECTYPE, "REG_ECTYPE", "invalid character class" }, + { REG_EESCAPE, "REG_EESCAPE", "trailing backslash (\\)" }, + { REG_ESUBREG, "REG_ESUBREG", "invalid backreference number" }, + { REG_EBRACK, "REG_EBRACK", "brackets ([ ]) not balanced" }, + { REG_EPAREN, "REG_EPAREN", "parentheses not balanced" }, + { REG_EBRACE, "REG_EBRACE", "braces not balanced" }, + { REG_BADBR, "REG_BADBR", "invalid repetition count(s)" }, + { REG_ERANGE, "REG_ERANGE", "invalid character range" }, + { REG_ESPACE, "REG_ESPACE", "out of memory" }, + { REG_BADRPT, "REG_BADRPT", "repetition-operator operand invalid" }, + { REG_EMPTY, "REG_EMPTY", "empty (sub)expression" }, + { REG_ASSERT, "REG_ASSERT", "\"can't happen\" -- you found a bug" }, + { REG_INVARG, "REG_INVARG", "invalid argument to regex routine" }, + { -1, "", "*** unknown regexp error code ***" }, }; /* - regerror - the interface to error numbers + = extern size_t regerror(int, const regex_t *, char *, size_t); */ /* ARGSUSED */ -size_t /* actual space needed (including NUL) */ +size_t regerror(errcode, preg, errbuf, errbuf_size) -int errcode; /* error code, or REG_ATOI or REG_ITOA */ -CONST regex_t *preg; /* associated regex_t (unused at present) */ -char *errbuf; /* result buffer (unless errbuf_size==0) */ -size_t errbuf_size; /* available space in errbuf, can be 0 */ +int errcode; +const regex_t *preg; +char *errbuf; +size_t errbuf_size; { - struct rerr *r; - char *msg; - char convbuf[sizeof(unk)+50]; /* 50 = plenty for int */ - size_t len; - int icode; + register struct rerr *r; + register size_t len; + register int target = errcode &~ REG_ITOA; + register char *s; + char convbuf[50]; - switch (errcode) { - case REG_ATOI: /* convert name to number */ - for (r = rerrs; r->code >= 0; r++) - if (strcmp(r->name, errbuf) == 0) - break; - sprintf(convbuf, "%d", r->code); /* -1 for unknown */ - msg = convbuf; - break; - case REG_ITOA: /* convert number to name */ - icode = atoi(errbuf); /* not our problem if this fails */ - for (r = rerrs; r->code >= 0; r++) - if (r->code == icode) - break; - if (r->code >= 0) - msg = r->name; - else { /* unknown; tell him the number */ - sprintf(convbuf, "REG_%u", (unsigned)icode); - msg = convbuf; - } - break; - default: /* a real, normal error code */ + if (errcode == REG_ATOI) + s = regatoi(preg, convbuf); + else { for (r = rerrs; r->code >= 0; r++) - if (r->code == errcode) + if (r->code == target) break; - if (r->code >= 0) - msg = r->explain; - else { /* unknown; say so */ - sprintf(convbuf, unk, errcode); - msg = convbuf; - } - break; + + if (errcode®_ITOA) { + if (r->code >= 0) + (void) strcpy(convbuf, r->name); + else + sprintf(convbuf, "REG_0x%x", target); + assert(strlen(convbuf) < sizeof(convbuf)); + s = convbuf; + } else + s = r->explain; } - len = strlen(msg) + 1; /* space needed, including NUL */ + len = strlen(s) + 1; if (errbuf_size > 0) { if (errbuf_size > len) - strcpy(errbuf, msg); - else { /* truncate to fit */ - strncpy(errbuf, msg, errbuf_size-1); + (void) strcpy(errbuf, s); + else { + (void) strncpy(errbuf, s, errbuf_size-1); errbuf[errbuf_size-1] = '\0'; } } - return len; + return(len); +} + +/* + - regatoi - internal routine to implement REG_ATOI + == static char *regatoi(const regex_t *preg, char *localbuf); + */ +static char * +regatoi(preg, localbuf) +const regex_t *preg; +char *localbuf; +{ + register struct rerr *r; + + for (r = rerrs; r->code >= 0; r++) + if (strcmp(r->name, preg->re_endp) == 0) + break; + if (r->code < 0) + return("0"); + + sprintf(localbuf, "%d", r->code); + return(localbuf); }