tag.c
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/* See LICENSE file for copyright and license details. */
#include "dwm.h"
#include <regex.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <X11/Xatom.h>
#include <X11/Xutil.h>
/* static */
typedef struct {
const char *prop;
const char *tags;
Bool isfloating;
} Rule;
typedef struct {
regex_t *propregex;
regex_t *tagregex;
} Regs;
TAGS
RULES
static Regs *regs = NULL;
static unsigned int nrules = 0;
static char prop[512];
static void
persistconfig(Client *c) {
unsigned int i;
for(i = 0; i < ntags && i < sizeof prop - 1; i++)
prop[i] = c->tags[i] ? '1' : '0';
if(i < sizeof prop - 1)
prop[i++] = c->isfloating ? '1' : '0';
prop[i] = '\0';
XChangeProperty(dpy, c->win, dwmconfig, XA_STRING, 8,
PropModeReplace, (unsigned char *)prop, i);
}
static unsigned int
idxoftag(const char *tag) {
unsigned int i;
for(i = 0; i < ntags; i++)
if(tags[i] == tag)
return i;
return 0;
}
/* extern */
void
compileregs(void) {
unsigned int i;
regex_t *reg;
if(regs)
return;
nrules = sizeof rule / sizeof rule[0];
regs = emallocz(nrules * sizeof(Regs));
for(i = 0; i < nrules; i++) {
if(rule[i].prop) {
reg = emallocz(sizeof(regex_t));
if(regcomp(reg, rule[i].prop, REG_EXTENDED))
free(reg);
else
regs[i].propregex = reg;
}
if(rule[i].tags) {
reg = emallocz(sizeof(regex_t));
if(regcomp(reg, rule[i].tags, REG_EXTENDED))
free(reg);
else
regs[i].tagregex = reg;
}
}
}
Bool
isvisible(Client *c) {
unsigned int i;
for(i = 0; i < ntags; i++)
if(c->tags[i] && seltag[i])
return True;
return False;
}
void
settags(Client *c, Client *trans) {
unsigned int i, j;
regmatch_t tmp;
Bool matched = trans != NULL;
XClassHint ch = { 0 };
XTextProperty name;
if(matched) {
for(i = 0; i < ntags; i++)
c->tags[i] = trans->tags[i];
}
else {
/* check if window has set a property */
name.nitems = 0;
XGetTextProperty(dpy, c->win, &name, dwmconfig);
if(name.nitems && name.encoding == XA_STRING) {
strncpy(prop, (char *)name.value, sizeof prop - 1);
prop[sizeof prop - 1] = '\0';
XFree(name.value);
for(i = 0; i < ntags && i < sizeof prop - 1 && prop[i] != '\0'; i++)
if((c->tags[i] = prop[i] == '1'))
matched = True;
if(i < sizeof prop - 1 && prop[i] != '\0')
c->isfloating = prop[i] == '1';
}
}
if(!matched) {
/* rule matching */
XGetClassHint(dpy, c->win, &ch);
snprintf(prop, sizeof prop, "%s:%s:%s",
ch.res_class ? ch.res_class : "",
ch.res_name ? ch.res_name : "", c->name);
for(i = 0; i < nrules; i++)
if(regs[i].propregex && !regexec(regs[i].propregex, prop, 1, &tmp, 0)) {
c->isfloating = rule[i].isfloating;
for(j = 0; regs[i].tagregex && j < ntags; j++) {
if(!regexec(regs[i].tagregex, tags[j], 1, &tmp, 0)) {
matched = True;
c->tags[j] = True;
}
}
}
if(ch.res_class)
XFree(ch.res_class);
if(ch.res_name)
XFree(ch.res_name);
}
if(!matched)
for(i = 0; i < ntags; i++)
c->tags[i] = seltag[i];
persistconfig(c);
}
void
tag(const char *arg) {
unsigned int i;
if(!sel)
return;
for(i = 0; i < ntags; i++)
sel->tags[i] = arg == NULL;
i = idxoftag(arg);
if(i >= 0 && i < ntags)
sel->tags[i] = True;
persistconfig(sel);
arrange();
}
void
togglefloating(const char *arg) {
if(!sel || isfloating())
return;
sel->isfloating = !sel->isfloating;
if(sel->isfloating) {
resize(sel, sel->x, sel->y, sel->w, sel->h, True);
persistconfig(sel);
}
arrange();
}
void
toggletag(const char *arg) {
unsigned int i, j;
if(!sel)
return;
i = idxoftag(arg);
sel->tags[i] = !sel->tags[i];
for(j = 0; j < ntags && !sel->tags[j]; j++);
if(j == ntags)
sel->tags[i] = True;
persistconfig(sel);
arrange();
}
void
toggleview(const char *arg) {
unsigned int i, j;
i = idxoftag(arg);
seltag[i] = !seltag[i];
for(j = 0; j < ntags && !seltag[j]; j++);
if(j == ntags)
seltag[i] = True; /* cannot toggle last view */
arrange();
}
void
view(const char *arg) {
unsigned int i;
for(i = 0; i < ntags; i++)
seltag[i] = arg == NULL;
i = idxoftag(arg);
if(i >= 0 && i < ntags)
seltag[i] = True;
arrange();
}