mirror of https://github.com/0intro/wmii
88 lines
1.5 KiB
C
88 lines
1.5 KiB
C
/*
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* (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
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* See LICENSE file for license details.
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*/
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#include <string.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include "wmii.h"
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/* basic rule matching language /regex/ -> value
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* regex might contain POSIX regex syntax defined in regex(3) */
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enum {
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IGNORE,
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REGEX,
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VALUE
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};
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void
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trim(char *str, const char *chars) {
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const char *cp;
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char *sp, *sn;
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for(cp = chars; *cp; cp++) {
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for(sp = sn = str; *sn; sn++) {
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if(*sn != *cp)
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*(sp++) = *sn;
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}
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*sp = 0;
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}
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}
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void
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update_rules(Rule **rule, const char *data) {
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int mode = IGNORE;
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Rule *rul;
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char *p, *r = nil, *v = nil, regex[256], value[256];
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if(!data || !strlen(data))
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return;
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while((rul = *rule)) {
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*rule = rul->next;
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regfree(&rul->regex);
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free(rul);
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}
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for(p = (char *)data; *p; p++)
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switch(mode) {
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case IGNORE:
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if(*p == '/') {
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mode = REGEX;
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r = regex;
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}
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else if(*p == '>') {
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mode = VALUE;
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value[0] = 0;
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v = value;
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}
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break;
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case REGEX:
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if(*p == '/') {
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mode = IGNORE;
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*r = 0;
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}
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else {
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*r = *p;
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r++;
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}
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break;
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case VALUE:
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if(*p == '\n' || *p == 0) {
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*rule = ixp_emallocz(sizeof(Rule));
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*v = 0;
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trim(value, " \t/");
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if(!regcomp(&(*rule)->regex, regex, 0)) {
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strncpy((*rule)->value, value, sizeof(rul->value));
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rule = &(*rule)->next;
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}
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else free(*rule);
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mode = IGNORE;
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}
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else {
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*v = *p;
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v++;
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}
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break;
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}
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}
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