X-Git-Url: https://jasonwoof.com/gitweb/?p=dwm.git;a=blobdiff_plain;f=util.c;h=3175ab23d0a98a232983509fe40d64d116b2946c;hp=052d535a108fbdc866929cfdd736263f7df5e3db;hb=cb4aa5bc35cf16a06bb2b4e880648e390fa2cc55;hpb=26e134b8a7dae21a699822009674b3131de6e250

diff --git a/util.c b/util.c
index 052d535..3175ab2 100644
--- a/util.c
+++ b/util.c
@@ -1,187 +1,63 @@
-/*
- * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
+/* (C)opyright MMVII Anselm R. Garbe <garbeam at gmail dot com>
  * See LICENSE file for license details.
  */
-
+#include "dwm.h"
 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
-#include <string.h>
-#include <sys/types.h>
 #include <sys/wait.h>
 #include <unistd.h>
-#include <X11/Xatom.h>
-
-#include "util.h"
 
-static char *shell = NULL;
-
-void
-error(char *errstr, ...) {
-	va_list ap;
-	va_start(ap, errstr);
-	vfprintf(stderr, errstr, ap);
-	va_end(ap);
-	exit(1);
-}
-
-static void
-bad_malloc(unsigned int size)
-{
-	fprintf(stderr, "fatal: could not malloc() %d bytes\n",
-			(int) size);
-	exit(1);
-}
+/* extern */
 
 void *
-emallocz(unsigned int size)
-{
+emallocz(unsigned int size) {
 	void *res = calloc(1, size);
+
 	if(!res)
-		bad_malloc(size);
+		eprint("fatal: could not malloc() %u bytes\n", size);
 	return res;
 }
 
-void *
-emalloc(unsigned int size)
-{
-	void *res = malloc(size);
-	if(!res)
-		bad_malloc(size);
-	return res;
+void
+eprint(const char *errstr, ...) {
+	va_list ap;
+
+	va_start(ap, errstr);
+	vfprintf(stderr, errstr, ap);
+	va_end(ap);
+	exit(EXIT_FAILURE);
 }
 
 void *
-erealloc(void *ptr, unsigned int size)
-{
+erealloc(void *ptr, unsigned int size) {
 	void *res = realloc(ptr, size);
-	if(!res)
-		bad_malloc(size);
-	return res;
-}
 
-char *
-estrdup(const char *str)
-{
-	void *res = strdup(str);
 	if(!res)
-		bad_malloc(strlen(str));
+		eprint("fatal: could not malloc() %u bytes\n", size);
 	return res;
 }
 
 void
-failed_assert(char *a, char *file, int line)
-{
-	fprintf(stderr, "Assertion \"%s\" failed at %s:%d\n", a, file, line);
-	abort();
-}
-
-void
-swap(void **p1, void **p2)
-{
-	void *tmp = *p1;
-	*p1 = *p2;
-	*p2 = tmp;
-}
+spawn(Arg *arg) {
+	static char *shell = NULL;
 
-void
-spawn(Display *dpy, const char *cmd)
-{
 	if(!shell && !(shell = getenv("SHELL")))
 		shell = "/bin/sh";
-
-	if(!cmd)
+	if(!arg->cmd)
 		return;
+	/* The double-fork construct avoids zombie processes and keeps the code
+	 * clean from stupid signal handlers. */
 	if(fork() == 0) {
 		if(fork() == 0) {
 			if(dpy)
 				close(ConnectionNumber(dpy));
 			setsid();
-			fprintf(stderr, "gridwm: execlp %s %s -c %s", shell, shell, cmd);
-			execlp(shell, shell, "-c", cmd, NULL);
-			fprintf(stderr, "gridwm: execlp %s", cmd);
+			execl(shell, shell, "-c", arg->cmd, (char *)NULL);
+			fprintf(stderr, "dwm: execl '%s -c %s'", shell, arg->cmd);
 			perror(" failed");
 		}
-		exit (0);
-	}
-	wait(0);
-}
-
-void
-pipe_spawn(char *buf, unsigned int len, Display *dpy, const char *cmd)
-{
-	unsigned int l, n;
-	int pfd[2];
-
-	if(!shell && !(shell = getenv("SHELL")))
-		shell = "/bin/sh";
-
-	if(!cmd)
-		return;
-
-	if(pipe(pfd) == -1) {
-		perror("pipe");
-		exit(1);
-	}
-
-	if(fork() == 0) {
-		if(dpy)
-			close(ConnectionNumber(dpy));
-		setsid();
-		dup2(pfd[1], STDOUT_FILENO);
-		close(pfd[0]);
-		close(pfd[1]);
-		execlp(shell, shell, "-c", cmd, NULL);
-		fprintf(stderr, "gridwm: execlp %s", cmd);
-		perror(" failed");
-	}
-	else {
-		n = 0;
-		close(pfd[1]);
-		while(l > n) {
-			if((l = read(pfd[0], buf + n, len - n)) < 1)
-				break;
-			n += l;
-		}
-		close(pfd[0]);
-		buf[n - 1] = 0;
+		exit(0);
 	}
 	wait(0);
 }
-
-
-unsigned char *
-getselection(unsigned long offset, unsigned long *len, unsigned long *remain)
-{
-	Display *dpy;
-	Atom xa_clip_string;
-	Window w;
-	XEvent ev;
-	Atom typeret;
-	int format;
-	unsigned char *data;
-	unsigned char *result = NULL;
-
-	dpy = XOpenDisplay(0);
-	if(!dpy)
-		return NULL;
-	xa_clip_string = XInternAtom(dpy, "_SEL_STRING", False);
-	w = XCreateSimpleWindow(dpy, DefaultRootWindow(dpy), 10, 10, 200, 200,
-			1, CopyFromParent, CopyFromParent);
-	XConvertSelection(dpy, XA_PRIMARY, XA_STRING, xa_clip_string,
-			w, CurrentTime);
-	XFlush(dpy);
-	XNextEvent(dpy, &ev);
-	if(ev.type == SelectionNotify && ev.xselection.property != None) {
-		XGetWindowProperty(dpy, w, ev.xselection.property, offset, 4096L, False,
-				AnyPropertyType, &typeret, &format, len, remain, &data);
-		if(*len) {
-			result = emalloc(sizeof(unsigned char) * *len);
-			memcpy(result, data, *len);
-		}
-		XDeleteProperty(dpy, w, ev.xselection.property);
-	}
-	XDestroyWindow(dpy, w);
-	XCloseDisplay(dpy);
-	return result;
-}