X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/07dcc2173f3545a38736762f817fd6486ec17639..d08f23a71cc77701bb2a02da0aa96835b6d5231b:/src/regex/regerror.c diff --git a/src/regex/regerror.c b/src/regex/regerror.c index e53dafcfbf..aca13aade0 100644 --- a/src/regex/regerror.c +++ b/src/regex/regerror.c @@ -1,126 +1,109 @@ -#include -#include -#include -#include -#include -#include -#include - -#include "utils.h" -#include "regerror.ih" - /* - = #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 (!) + * 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" + +/* unknown-error explanation */ +static char unk[] = "*** unknown regex error code 0x%x ***"; + +/* struct to map among codes, code names, and explanations */ static struct rerr { int code; char *name; char *explain; } rerrs[] = { - 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 ***", + /* the actual table is built from regex.h */ +# include "regerrs.h" + { -1, "", "oops" }, /* explanation special-cased in code */ }; /* - regerror - the interface to error numbers - = extern size_t regerror(int, const regex_t *, char *, size_t); */ /* ARGSUSED */ -size_t +size_t /* actual space needed (including NUL) */ regerror(errcode, preg, errbuf, errbuf_size) -int errcode; -const regex_t *preg; -char *errbuf; -size_t 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 */ { - register struct rerr *r; - register size_t len; - register int target = errcode &~ REG_ITOA; - register char *s; - char convbuf[50]; + struct rerr *r; + char *msg; + char convbuf[sizeof(unk)+50]; /* 50 = plenty for int */ + size_t len; + int icode; - if (errcode == REG_ATOI) - s = regatoi(preg, convbuf); - else { + 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 */ for (r = rerrs; r->code >= 0; r++) - if (r->code == target) + if (r->code == errcode) 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; + if (r->code >= 0) + msg = r->explain; + else { /* unknown; say so */ + sprintf(convbuf, unk, errcode); + msg = convbuf; + } + break; } - len = strlen(s) + 1; + len = strlen(msg) + 1; /* space needed, including NUL */ if (errbuf_size > 0) { if (errbuf_size > len) - (void) strcpy(errbuf, s); - else { - (void) strncpy(errbuf, s, errbuf_size-1); + strcpy(errbuf, msg); + else { /* truncate to fit */ + strncpy(errbuf, msg, errbuf_size-1); errbuf[errbuf_size-1] = '\0'; } } - 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); + return len; }