зеркало из https://github.com/mozilla/gecko-dev.git
307 строки
7.9 KiB
C
307 строки
7.9 KiB
C
|
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
||
|
|
*
|
||
|
|
* The contents of this file are subject to the Netscape Public License
|
||
|
|
* Version 1.0 (the "NPL"); you may not use this file except in
|
||
|
|
* compliance with the NPL. You may obtain a copy of the NPL at
|
||
|
|
* http://www.mozilla.org/NPL/
|
||
|
|
*
|
||
|
|
* Software distributed under the NPL is distributed on an "AS IS" basis,
|
||
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
|
||
|
|
* for the specific language governing rights and limitations under the
|
||
|
|
* NPL.
|
||
|
|
*
|
||
|
|
* The Initial Developer of this code under the NPL is Netscape
|
||
|
|
* Communications Corporation. Portions created by Netscape are
|
||
|
|
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
|
||
|
|
* Reserved.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/* *
|
||
|
|
*
|
||
|
|
*
|
||
|
|
* shexp.c: shell-like wildcard match routines
|
||
|
|
*
|
||
|
|
* See shexp.h for public documentation.
|
||
|
|
*
|
||
|
|
* Rob McCool
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "xp_reg.h"
|
||
|
|
#include "xp.h"
|
||
|
|
|
||
|
|
|
||
|
|
/* ----------------------------- shexp_valid ------------------------------ */
|
||
|
|
|
||
|
|
|
||
|
|
PRIVATE int
|
||
|
|
_valid_subexp(char *exp, char stop)
|
||
|
|
{
|
||
|
|
register int x,y,t;
|
||
|
|
int nsc,np,tld;
|
||
|
|
|
||
|
|
x=0;nsc=0;tld=0;
|
||
|
|
|
||
|
|
while(exp[x] && (exp[x] != stop)) {
|
||
|
|
switch(exp[x]) {
|
||
|
|
case '~':
|
||
|
|
if(tld) return INVALID_SXP;
|
||
|
|
else ++tld;
|
||
|
|
case '*':
|
||
|
|
case '?':
|
||
|
|
case '^':
|
||
|
|
case '$':
|
||
|
|
++nsc;
|
||
|
|
break;
|
||
|
|
case '[':
|
||
|
|
++nsc;
|
||
|
|
if((!exp[++x]) || (exp[x] == ']'))
|
||
|
|
return INVALID_SXP;
|
||
|
|
for(++x;exp[x] && (exp[x] != ']');++x)
|
||
|
|
if(exp[x] == '\\')
|
||
|
|
if(!exp[++x])
|
||
|
|
return INVALID_SXP;
|
||
|
|
if(!exp[x])
|
||
|
|
return INVALID_SXP;
|
||
|
|
break;
|
||
|
|
case '(':
|
||
|
|
++nsc;np = 0;
|
||
|
|
while(1) {
|
||
|
|
if(exp[++x] == ')')
|
||
|
|
return INVALID_SXP;
|
||
|
|
for(y=x;(exp[y]) && (exp[y] != '|') && (exp[y] != ')');++y)
|
||
|
|
if(exp[y] == '\\')
|
||
|
|
if(!exp[++y])
|
||
|
|
return INVALID_SXP;
|
||
|
|
if(!exp[y])
|
||
|
|
return INVALID_SXP;
|
||
|
|
if(exp[y] == '|')
|
||
|
|
++np;
|
||
|
|
t = _valid_subexp(&exp[x],exp[y]);
|
||
|
|
if(t == INVALID_SXP)
|
||
|
|
return INVALID_SXP;
|
||
|
|
x+=t;
|
||
|
|
if(exp[x] == ')') {
|
||
|
|
if(!np)
|
||
|
|
return INVALID_SXP;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case ')':
|
||
|
|
case ']':
|
||
|
|
return INVALID_SXP;
|
||
|
|
case '\\':
|
||
|
|
if(!exp[++x])
|
||
|
|
return INVALID_SXP;
|
||
|
|
default:
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
++x;
|
||
|
|
}
|
||
|
|
if((!stop) && (!nsc))
|
||
|
|
return NON_SXP;
|
||
|
|
return ((exp[x] == stop) ? x : INVALID_SXP);
|
||
|
|
}
|
||
|
|
|
||
|
|
PUBLIC int
|
||
|
|
XP_RegExpValid(char *exp)
|
||
|
|
{
|
||
|
|
int x;
|
||
|
|
|
||
|
|
x = _valid_subexp(exp, '\0');
|
||
|
|
return (x < 0 ? x : VALID_SXP);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/* ----------------------------- shexp_match ----------------------------- */
|
||
|
|
|
||
|
|
|
||
|
|
#define MATCH 0
|
||
|
|
#define NOMATCH 1
|
||
|
|
#define ABORTED -1
|
||
|
|
|
||
|
|
PRIVATE int _shexp_match(char *str, char *exp, Bool case_insensitive);
|
||
|
|
|
||
|
|
PRIVATE int
|
||
|
|
_handle_union(char *str, char *exp, Bool case_insensitive)
|
||
|
|
{
|
||
|
|
char *e2 = (char *) XP_ALLOC(sizeof(char)*strlen(exp));
|
||
|
|
register int t,p2,p1 = 1;
|
||
|
|
int cp;
|
||
|
|
|
||
|
|
while(1) {
|
||
|
|
for(cp=1;exp[cp] != ')';cp++)
|
||
|
|
if(exp[cp] == '\\')
|
||
|
|
++cp;
|
||
|
|
for(p2 = 0;(exp[p1] != '|') && (p1 != cp);p1++,p2++) {
|
||
|
|
if(exp[p1] == '\\')
|
||
|
|
e2[p2++] = exp[p1++];
|
||
|
|
e2[p2] = exp[p1];
|
||
|
|
}
|
||
|
|
for (t=cp+1; ((e2[p2] = exp[t]) != 0); ++t,++p2) {}
|
||
|
|
if(_shexp_match(str,e2, case_insensitive) == MATCH) {
|
||
|
|
XP_FREE(e2);
|
||
|
|
return MATCH;
|
||
|
|
}
|
||
|
|
if(p1 == cp) {
|
||
|
|
XP_FREE(e2);
|
||
|
|
return NOMATCH;
|
||
|
|
}
|
||
|
|
else ++p1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
PRIVATE int
|
||
|
|
_shexp_match(char *str, char *exp, Bool case_insensitive)
|
||
|
|
{
|
||
|
|
register int x,y;
|
||
|
|
int ret,neg;
|
||
|
|
|
||
|
|
ret = 0;
|
||
|
|
for(x=0,y=0;exp[y];++y,++x) {
|
||
|
|
if((!str[x]) && (exp[y] != '(') && (exp[y] != '$') && (exp[y] != '*'))
|
||
|
|
ret = ABORTED;
|
||
|
|
else {
|
||
|
|
switch(exp[y]) {
|
||
|
|
case '$':
|
||
|
|
if( (str[x]) )
|
||
|
|
ret = NOMATCH;
|
||
|
|
else
|
||
|
|
--x; /* we don't want loop to increment x */
|
||
|
|
break;
|
||
|
|
case '*':
|
||
|
|
while(exp[++y] == '*'){}
|
||
|
|
if(!exp[y])
|
||
|
|
return MATCH;
|
||
|
|
while(str[x]) {
|
||
|
|
switch(_shexp_match(&str[x++],&exp[y], case_insensitive)) {
|
||
|
|
case NOMATCH:
|
||
|
|
continue;
|
||
|
|
case ABORTED:
|
||
|
|
ret = ABORTED;
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
return MATCH;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
if((exp[y] == '$') && (exp[y+1] == '\0') && (!str[x]))
|
||
|
|
return MATCH;
|
||
|
|
else
|
||
|
|
ret = ABORTED;
|
||
|
|
break;
|
||
|
|
case '[':
|
||
|
|
neg = ((exp[++y] == '^') && (exp[y+1] != ']'));
|
||
|
|
if (neg)
|
||
|
|
++y;
|
||
|
|
|
||
|
|
if ((isalnum(exp[y])) && (exp[y+1] == '-') &&
|
||
|
|
(isalnum(exp[y+2])) && (exp[y+3] == ']'))
|
||
|
|
{
|
||
|
|
int start = exp[y], end = exp[y+2];
|
||
|
|
|
||
|
|
/* Droolproofing for pinheads not included */
|
||
|
|
if(neg ^ ((str[x] < start) || (str[x] > end))) {
|
||
|
|
ret = NOMATCH;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
y+=3;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
int matched;
|
||
|
|
|
||
|
|
for (matched=0;exp[y] != ']';y++)
|
||
|
|
matched |= (str[x] == exp[y]);
|
||
|
|
if (neg ^ (!matched))
|
||
|
|
ret = NOMATCH;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case '(':
|
||
|
|
return _handle_union(&str[x],&exp[y], case_insensitive);
|
||
|
|
break;
|
||
|
|
case '?':
|
||
|
|
break;
|
||
|
|
case '\\':
|
||
|
|
++y;
|
||
|
|
default:
|
||
|
|
if(case_insensitive)
|
||
|
|
{
|
||
|
|
if(toupper(str[x]) != toupper(exp[y]))
|
||
|
|
ret = NOMATCH;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
if(str[x] != exp[y])
|
||
|
|
ret = NOMATCH;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if(ret)
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
return (ret ? ret : (str[x] ? NOMATCH : MATCH));
|
||
|
|
}
|
||
|
|
|
||
|
|
PUBLIC int
|
||
|
|
XP_RegExpMatch(char *str, char *xp, Bool case_insensitive) {
|
||
|
|
register int x;
|
||
|
|
char *exp = 0;
|
||
|
|
|
||
|
|
StrAllocCopy(exp, xp);
|
||
|
|
|
||
|
|
if(!exp)
|
||
|
|
return 1;
|
||
|
|
|
||
|
|
for(x=strlen(exp)-1;x;--x) {
|
||
|
|
if((exp[x] == '~') && (exp[x-1] != '\\')) {
|
||
|
|
exp[x] = '\0';
|
||
|
|
if(_shexp_match(str,&exp[++x], case_insensitive) == MATCH)
|
||
|
|
goto punt;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if(_shexp_match(str,exp, FALSE) == MATCH) {
|
||
|
|
XP_FREE(exp);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
punt:
|
||
|
|
XP_FREE(exp);
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/* ------------------------------ shexp_cmp ------------------------------- */
|
||
|
|
|
||
|
|
PUBLIC int
|
||
|
|
XP_RegExpSearch(char *str, char *exp)
|
||
|
|
{
|
||
|
|
switch(XP_RegExpValid(exp))
|
||
|
|
{
|
||
|
|
case INVALID_SXP:
|
||
|
|
return -1;
|
||
|
|
case NON_SXP:
|
||
|
|
return (strcmp(exp,str) ? 1 : 0);
|
||
|
|
default:
|
||
|
|
return XP_RegExpMatch(str, exp, FALSE);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
PUBLIC int
|
||
|
|
XP_RegExpCaseSearch(char *str, char *exp)
|
||
|
|
{
|
||
|
|
switch(XP_RegExpValid(exp))
|
||
|
|
{
|
||
|
|
case INVALID_SXP:
|
||
|
|
return -1;
|
||
|
|
case NON_SXP:
|
||
|
|
return (strcmp(exp,str) ? 1 : 0);
|
||
|
|
default:
|
||
|
|
return XP_RegExpMatch(str, exp, TRUE);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|