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