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