[dev] [tabbed] Add window ID to environment

[Gregor Best]

Hi people,

the attached patch lets tabbed expose its window ID to its children via
the env var TABBED_WIN. This allows doing things like the following from
inside tabbed:

    st -t "Foo" -w $TABBED_WIN &
    st -t "Bar" -w $TABBED_WIN

thus easing the use of different tab titles.

-- 
    $l="\n";$p=q-sub r{rand}sub c{((shift)**2+(shift)**2)<1}while(
    $i++<=$s){$t++if c r,r}die("Gregor Best, 0xDB9F9A7C, ".($t/$s*
    4).$l)-;$s+=ord$$|$_ for split //,$p;srand($s|$$);eval$p;die$@

exporting patch:
# HG changeset patch
# User Gregor Best <g...@ring0.de>
# Date 1307706900 -7200
# Node ID fdeaafa15c5bcc33b1676241df4083dc1005bf02
# Parent  1f090280fc824f4c5869f16db9e2d0d641d06d15
Set envvar TABBED_WIN to the window id

This allows stuff like
    st -t "I'm a shell" -w $TABBED_WIN
from inside tabbed.

diff -r 1f090280fc82 -r fdeaafa15c5b config.mk
--- a/config.mk Fri May 06 21:40:53 2011 +0100
+++ b/config.mk Fri Jun 10 13:55:00 2011 +0200
@@ -9,7 +9,7 @@
 
 # includes and libs
 INCS = -I. -I/usr/include
-LIBS = -L/usr/lib -lc -lX11
+LIBS = -L/usr/lib -lc -lm -lX11
 
 # flags
 CPPFLAGS = -DVERSION=\"${VERSION}\"
diff -r 1f090280fc82 -r fdeaafa15c5b tabbed.c
--- a/tabbed.c  Fri May 06 21:40:53 2011 +0100
+++ b/tabbed.c  Fri Jun 10 13:55:00 2011 +0200
@@ -2,6 +2,7 @@
  *
  * To understand tabbed, start reading main().
  */
+#define _BSD_SOURCE // for the definition of setenv()
 #include <sys/wait.h>
 #include <locale.h>
 #include <stdarg.h>
@@ -10,6 +11,8 @@
 #include <stdio.h>
 #include <string.h>
 #include <stdlib.h>
+#include <math.h>
+#include <stdlib.h>
 #include <X11/Xatom.h>
 #include <X11/Xlib.h>
 #include <X11/Xproto.h>
@@ -858,7 +861,8 @@
 
 int
 main(int argc, char *argv[]) {
-       int i, detach = 0;
+       int i, detach = 0, len;
+       char *tmp;
 
        for(i = 1; i < argc && !cmd; i++) {
                if(!strcmp("-v", argv[i]))
@@ -875,6 +879,11 @@
        if(!(dpy = XOpenDisplay(NULL)))
                die("tabbed: cannot open display\n");
        setup();
+       len = (int)(log10(win) + 2);
+       tmp = malloc(sizeof(char) * len);
+       snprintf(tmp, len, "%lu", win);
+       setenv("TABBED_WIN", tmp, 1);
+       free(tmp);
        printf("%lu\n", win);
        fflush(NULL);
        if(detach) {

pgpt5a2nFprNk.pgp
Description: PGP signature