tag.c

   1 /* See LICENSE file for copyright and license details. */
   2 #include "dwm.h"
   3 #include <regex.h>
   4 #include <stdio.h>
   5 #include <stdlib.h>
   6 #include <X11/Xutil.h>
   7
   8 /* static */
   9
  10 typedef struct {
  11         const char *prop;
  12         const char *tags;
  13         Bool isfloating;
  14 } Rule;
  15
  16 typedef struct {
  17         regex_t *propregex;
  18         regex_t *tagregex;
  19 } Regs;
  20
  21 TAGS
  22 RULES
  23
  24 static Regs *regs = NULL;
  25 static unsigned int nrules = 0;
  26 static char prop[512];
  27
  28 static unsigned int
  29 idxoftag(const char *tag) {
  30         unsigned int i;
  31
  32         for(i = 0; i < ntags; i++)
  33                 if(tags[i] == tag)
  34                         return i;
  35         return 0;
  36 }
  37
  38 /* extern */
  39
  40 void
  41 applyrules(Client *c) {
  42         unsigned int i, j;
  43         regmatch_t tmp;
  44         Bool matched = False;
  45         XClassHint ch = { 0 };
  46
  47         /* rule matching */
  48         XGetClassHint(dpy, c->win, &ch);
  49         snprintf(prop, sizeof prop, "%s:%s:%s",
  50                         ch.res_class ? ch.res_class : "",
  51                         ch.res_name ? ch.res_name : "", c->name);
  52         for(i = 0; i < nrules; i++)
  53                 if(regs[i].propregex && !regexec(regs[i].propregex, prop, 1, &tmp, 0)) {
  54                         c->isfloating = rules[i].isfloating;
  55                         for(j = 0; regs[i].tagregex && j < ntags; j++) {
  56                                 if(!regexec(regs[i].tagregex, tags[j], 1, &tmp, 0)) {
  57                                         matched = True;
  58                                         c->tags[j] = True;
  59                                 }
  60                         }
  61                 }
  62         if(ch.res_class)
  63                 XFree(ch.res_class);
  64         if(ch.res_name)
  65                 XFree(ch.res_name);
  66         if(!matched)
  67                 for(i = 0; i < ntags; i++)
  68                         c->tags[i] = seltags[i];
  69 }
  70
  71 void
  72 compileregs(void) {
  73         unsigned int i;
  74         regex_t *reg;
  75
  76         if(regs)
  77                 return;
  78         nrules = sizeof rules / sizeof rules[0];
  79         regs = emallocz(nrules * sizeof(Regs));
  80         for(i = 0; i < nrules; i++) {
  81                 if(rules[i].prop) {
  82                         reg = emallocz(sizeof(regex_t));
  83                         if(regcomp(reg, rules[i].prop, REG_EXTENDED))
  84                                 free(reg);
  85                         else
  86                                 regs[i].propregex = reg;
  87                 }
  88                 if(rules[i].tags) {
  89                         reg = emallocz(sizeof(regex_t));
  90                         if(regcomp(reg, rules[i].tags, REG_EXTENDED))
  91                                 free(reg);
  92                         else
  93                                 regs[i].tagregex = reg;
  94                 }
  95         }
  96 }
  97
  98 Bool
  99 isvisible(Client *c) {
 100         unsigned int i;
 101
 102         for(i = 0; i < ntags; i++)
 103                 if(c->tags[i] && seltags[i])
 104                         return True;
 105         return False;
 106 }
 107
 108 void
 109 tag(const char *arg) {
 110         unsigned int i;
 111
 112         if(!sel)
 113                 return;
 114         for(i = 0; i < ntags; i++)
 115                 sel->tags[i] = arg == NULL;
 116         i = idxoftag(arg);
 117         if(i >= 0 && i < ntags)
 118                 sel->tags[i] = True;
 119         saveprops(sel);
 120         arrange();
 121 }
 122
 123 void
 124 togglefloating(const char *arg) {
 125         if(!sel || isfloating())
 126                 return;
 127         sel->isfloating = !sel->isfloating;
 128         if(sel->isfloating) {
 129                 resize(sel, sel->x, sel->y, sel->w, sel->h, True);
 130                 saveprops(sel);
 131         }
 132         arrange();
 133 }
 134
 135 void
 136 toggletag(const char *arg) {
 137         unsigned int i, j;
 138
 139         if(!sel)
 140                 return;
 141         i = idxoftag(arg);
 142         sel->tags[i] = !sel->tags[i];
 143         for(j = 0; j < ntags && !sel->tags[j]; j++);
 144         if(j == ntags)
 145                 sel->tags[i] = True;
 146         saveprops(sel);
 147         arrange();
 148 }
 149
 150 void
 151 toggleview(const char *arg) {
 152         unsigned int i, j;
 153
 154         i = idxoftag(arg);
 155         seltags[i] = !seltags[i];
 156         for(j = 0; j < ntags && !seltags[j]; j++);
 157         if(j == ntags)
 158                 seltags[i] = True; /* cannot toggle last view */
 159         savedwmprops();
 160         arrange();
 161 }
 162
 163 void
 164 view(const char *arg) {
 165         unsigned int i;
 166
 167         for(i = 0; i < ntags; i++)
 168                 seltags[i] = arg == NULL;
 169         i = idxoftag(arg);
 170         if(i >= 0 && i < ntags)
 171                 seltags[i] = True;
 172         savedwmprops();
 173         arrange();
 174 }