From bcaf6a7a0f492c3fafc4baabd2dc06f5191417ee Mon Sep 17 00:00:00 2001
From: "arg@10ksloc.org" <unknown>
Date: Wed, 19 Jul 2006 17:42:08 +0200
Subject: [PATCH 1/1] implemented regexp matching for rules

---
 client.c |  5 +++--
 dwm.h    | 17 -----------------
 event.c  | 10 +++++++++-
 tag.c    | 40 ++++++++++++++++++++++++++++------------
 4 files changed, 40 insertions(+), 32 deletions(-)

diff --git a/client.c b/client.c
index ccd8100..aa96f4f 100644
--- a/client.c
+++ b/client.c
@@ -247,8 +247,9 @@ manage(Window w, XWindowAttributes *wa)
 			GrabModeAsync, GrabModeSync, None, None);
 
 	if(!c->isfloat)
-		c->isfloat = trans
-			|| ((c->maxw == c->minw) && (c->maxh == c->minh));
+		c->isfloat = trans || (c->maxw && c->minw &&
+				(c->maxw == c->minw) && (c->maxh == c->minh));
+
 
 	setgeom(c);
 	settitle(c);
diff --git a/dwm.h b/dwm.h
index f9f89dd..9670c68 100644
--- a/dwm.h
+++ b/dwm.h
@@ -30,8 +30,6 @@ typedef struct Client Client;
 typedef enum Corner Corner;
 typedef struct DC DC;
 typedef struct Fnt Fnt;
-typedef struct Key Key;
-typedef struct Rule Rule;
 
 union Arg {
 	const char **argv;
@@ -84,20 +82,6 @@ struct Client {
 	Window title;
 };
 
-struct Rule {
-	const char *class;
-	const char *instance;
-	char *tags[TLast];
-	Bool isfloat;
-};
-
-struct Key {
-	unsigned long mod;
-	KeySym keysym;
-	void (*func)(Arg *arg);
-	Arg arg;
-};
-
 extern char *tags[TLast], stext[1024];
 extern int tsel, screen, sx, sy, sw, sh, bx, by, bw, bh, mw;
 extern void (*handler[LASTEvent])(XEvent *);
@@ -108,7 +92,6 @@ extern Client *clients, *sel;
 extern Cursor cursor[CurLast];
 extern DC dc;
 extern Display *dpy;
-extern Key key[];
 extern Window root, barwin;
 
 /* client.c */
diff --git a/event.c b/event.c
index f8ad44c..05f4ac5 100644
--- a/event.c
+++ b/event.c
@@ -12,6 +12,14 @@
 #define MouseMask       (ButtonMask | PointerMotionMask)
 
 /* CUSTOMIZE */
+
+typedef struct {
+	unsigned long mod;
+	KeySym keysym;
+	void (*func)(Arg *arg);
+	Arg arg;
+} Key;
+
 const char *browse[] = { "firefox", NULL };
 const char *gimp[] = { "gimp", NULL };
 const char *term[] = { 
@@ -20,7 +28,7 @@ const char *term[] = {
 };
 const char *xlock[] = { "xlock", NULL };
 
-Key key[] = {
+static Key key[] = {
 	/* modifier				key			function	arguments */
 	{ ControlMask,			XK_0,		appendtag,	{ .i = Tscratch } }, 
 	{ ControlMask,			XK_1,		appendtag,	{ .i = Tdev } }, 
diff --git a/tag.c b/tag.c
index c9eec90..82cf18a 100644
--- a/tag.c
+++ b/tag.c
@@ -4,15 +4,25 @@
  */
 #include "dwm.h"
 
+#include <regex.h>
+#include <stdio.h>
 #include <string.h>
+#include <sys/types.h>
 #include <X11/Xutil.h>
 
 /* static */
 
+typedef struct {
+	const char *pattern;
+	char *tags[TLast];
+	Bool isfloat;
+} Rule;
+
 /* CUSTOMIZE */ 
 static Rule rule[] = {
-	/* class			instance	tags						isfloat */
-	{ "Firefox-bin",	"firefox-bin",	{ [Twww] = "www" },			False },
+	/* class			instance	tags		isfloat */
+	{ "Firefox.*",	{ [Twww] = "www" },			False },
+	{ "Gimp.*",		{ 0 },						True},
 };
 
 /* extern */
@@ -164,10 +174,13 @@ replacetag(Arg *arg)
 void
 settags(Client *c)
 {
-	XClassHint ch;
+	char classinst[256];
 	static unsigned int len = rule ? sizeof(rule) / sizeof(rule[0]) : 0;
 	unsigned int i, j;
+	regex_t regex;
+	regmatch_t tmp;
 	Bool matched = False;
+	XClassHint ch;
 
 	if(!len) {
 		c->tags[tsel] = tags[tsel];
@@ -175,24 +188,27 @@ settags(Client *c)
 	}
 
 	if(XGetClassHint(dpy, c->win, &ch)) {
-		if(ch.res_class && ch.res_name) {
-			for(i = 0; i < len; i++)
-				if(!strncmp(rule[i].class, ch.res_class, sizeof(rule[i].class))
-					&& !strncmp(rule[i].instance, ch.res_name, sizeof(rule[i].instance)))
-				{
-					for(j = 0; j < TLast; j++)
+		snprintf(classinst, sizeof(classinst), "%s:%s",
+				ch.res_class ? ch.res_class : "",
+				ch.res_name ? ch.res_name : "");
+		for(i = 0; !matched && i < len; i++) {
+			if(!regcomp(&regex, rule[i].pattern, 0)) {
+				if(!regexec(&regex, classinst, 1, &tmp, 0)) {
+					for(j = 0; j < TLast; j++) {
+						if(rule[i].tags[j])
+							matched = True;
 						c->tags[j] = rule[i].tags[j];
+					}
 					c->isfloat = rule[i].isfloat;
-					matched = True;
-					break;
 				}
+				regfree(&regex);
+			}
 		}
 		if(ch.res_class)
 			XFree(ch.res_class);
 		if(ch.res_name)
 			XFree(ch.res_name);
 	}
-
 	if(!matched)
 		c->tags[tsel] = tags[tsel];
 }
-- 
2.20.1