rules.c

   1 /*
   2  * rules.c - rules management
   3  *
   4  * Copyright © 2007 Julien Danjou <julien@danjou.info>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along
  17  * with this program; if not, write to the Free Software Foundation, Inc.,
  18  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19  *
  20  */
  21
  22 #include "util.h"
  23 #include "rules.h"
  24
  25 void
  26 compileregs(Rule *rules)
  27 {
  28     Rule *r;
  29     regex_t *reg;
  30     for(r = rules; r; r = r->next)
  31     {
  32         if(r->prop)
  33         {
  34             reg = p_new(regex_t, 1);
  35             if(regcomp(reg, r->prop, REG_EXTENDED))
  36                 p_delete(&reg);
  37             else
  38                 r->propregex = reg;
  39         }
  40         if(r->tags)
  41         {
  42             reg = p_new(regex_t, 1);
  43             if(regcomp(reg, r->tags, REG_EXTENDED))
  44                 p_delete(&reg);
  45             else
  46                 r->tagregex = reg;
  47         }
  48     }
  49 }
  50
  51 Bool
  52 client_match_rule(Client *c, Rule *r)
  53 {
  54     char *prop;
  55     regmatch_t tmp;
  56     ssize_t len;
  57     XClassHint ch = { 0, 0 };
  58     Bool ret;
  59
  60     XGetClassHint(c->display, c->win, &ch);
  61
  62     len = a_strlen(ch.res_class) + a_strlen(ch.res_name) + a_strlen(c->name);
  63     prop = p_new(char, len + 3);
  64
  65     /* rule matching */
  66     snprintf(prop, len + 3, "%s:%s:%s",
  67              ch.res_class ? ch.res_class : "", ch.res_name ? ch.res_name : "", c->name);
  68
  69     ret = (r->propregex && !regexec(r->propregex, prop, 1, &tmp, 0));
  70
  71     p_delete(&prop);
  72
  73     if(ch.res_class)
  74         XFree(ch.res_class);
  75     if(ch.res_name)
  76         XFree(ch.res_name);
  77
  78     return ret;
  79 }
  80
  81 Bool
  82 is_tag_match_rules(Tag *t, Rule *r)
  83 {
  84     regmatch_t tmp;
  85
  86     if(r->tagregex && !regexec(r->tagregex, t->name, 1, &tmp, 0))
  87         return True;
  88
  89     return False;
  90 }
  91
  92 // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99