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 /* extern */
  31
  32 void
  33 compileregs(void) {
  34         unsigned int i;
  35         regex_t *reg;
  36
  37         if(regs)
  38                 return;
  39         nrules = sizeof rule / sizeof rule[0];
  40         regs = emallocz(nrules * sizeof(Regs));
  41         for(i = 0; i < nrules; i++) {
  42                 if(rule[i].prop) {
  43                         reg = emallocz(sizeof(regex_t));
  44                         if(regcomp(reg, rule[i].prop, REG_EXTENDED))
  45                                 free(reg);
  46                         else
  47                                 regs[i].propregex = reg;
  48                 }
  49                 if(rule[i].tags) {
  50                         reg = emallocz(sizeof(regex_t));
  51                         if(regcomp(reg, rule[i].tags, REG_EXTENDED))
  52                                 free(reg);
  53                         else
  54                                 regs[i].tagregex = reg;
  55                 }
  56         }
  57 }
  58
  59 Bool
  60 isvisible(Client *c) {
  61         unsigned int i;
  62
  63         for(i = 0; i < ntags; i++)
  64                 if(c->tags[i] && seltag[i])
  65                         return True;
  66         return False;
  67 }
  68
  69 void
  70 settags(Client *c, Client *trans) {
  71         unsigned int i, j;
  72         regmatch_t tmp;
  73         Bool matched = trans != NULL;
  74         XClassHint ch = { 0 };
  75         XTextProperty name;
  76
  77         if(matched) {
  78                 for(i = 0; i < ntags; i++)
  79                         c->tags[i] = trans->tags[i];
  80                 return;
  81         }
  82         else {
  83                 /* check if window has set a property */
  84                 name.nitems = 0;
  85                 XGetTextProperty(dpy, c->win, &name, dwmtags);
  86                 if(name.nitems && name.encoding == XA_STRING) {
  87                         strncpy(prop, (char *)name.value, sizeof prop - 1);
  88                         prop[sizeof prop - 1] = '\0';
  89                         XFree(name.value);
  90                         for(i = 0; i < ntags && i < sizeof prop - 1 && prop[i] != '\0'; i++)
  91                                 if((c->tags[i] = prop[i] == '+'))
  92                                         matched = True;
  93                 }
  94                 if(matched)
  95                         return;
  96                 /* rule matching */
  97                 XGetClassHint(dpy, c->win, &ch);
  98                 snprintf(prop, sizeof prop, "%s:%s:%s",
  99                                 ch.res_class ? ch.res_class : "",
 100                                 ch.res_name ? ch.res_name : "", c->name);
 101                 for(i = 0; i < nrules; i++)
 102                         if(regs[i].propregex && !regexec(regs[i].propregex, prop, 1, &tmp, 0)) {
 103                                 c->isfloating = rule[i].isfloating;
 104                                 for(j = 0; regs[i].tagregex && j < ntags; j++) {
 105                                         if(!regexec(regs[i].tagregex, tags[j], 1, &tmp, 0)) {
 106                                                 matched = True;
 107                                                 c->tags[j] = True;
 108                                         }
 109                                 }
 110                         }
 111                 if(ch.res_class)
 112                         XFree(ch.res_class);
 113                 if(ch.res_name)
 114                         XFree(ch.res_name);
 115         }
 116         if(!matched)
 117                 for(i = 0; i < ntags; i++)
 118                         c->tags[i] = seltag[i];
 119 }
 120
 121 void
 122 tag(const char *arg) {
 123         int i;
 124
 125         if(!sel)
 126                 return;
 127         for(i = 0; i < ntags; i++)
 128                 sel->tags[i] = arg == NULL;
 129         i = arg ? atoi(arg) : 0;
 130         if(i >= 0 && i < ntags)
 131                 sel->tags[i] = True;
 132         if(sel) {
 133                 for(i = 0; i < ntags && i < sizeof prop - 1; i++)
 134                         prop[i] = sel->tags[i] ? '+' : '-';
 135                 prop[i] = '\0';
 136                 XChangeProperty(dpy, sel->win, dwmtags, XA_STRING, 8, PropModeReplace, (unsigned char *)prop, i);
 137         }
 138         arrange();
 139 }
 140
 141 void
 142 toggletag(const char *arg) {
 143         int i, j;
 144
 145         if(!sel)
 146                 return;
 147         i = arg ? atoi(arg) : 0;
 148         sel->tags[i] = !sel->tags[i];
 149         for(j = 0; j < ntags && !sel->tags[j]; j++);
 150         if(j == ntags)
 151                 sel->tags[i] = True;
 152         arrange();
 153 }
 154
 155 void
 156 toggleview(const char *arg) {
 157         int i, j;
 158
 159         i = arg ? atoi(arg) : 0;
 160         seltag[i] = !seltag[i];
 161         for(j = 0; j < ntags && !seltag[j]; j++);
 162         if(j == ntags)
 163                 seltag[i] = True; /* cannot toggle last view */
 164         arrange();
 165 }
 166
 167 void
 168 view(const char *arg) {
 169         int i;
 170
 171         for(i = 0; i < ntags; i++)
 172                 seltag[i] = arg == NULL;
 173         i = arg ? atoi(arg) : 0;
 174         if(i >= 0 && i < ntags)
 175                 seltag[i] = True;
 176         arrange();
 177 }