aewl: util.c annotate

annotate util.c @ 20:4560e0882c1d

made code more readable

author	Anselm R. Garbe <garbeam@wmii.de>
date	Tue, 11 Jul 2006 22:49:09 +0200
parents	359b6e563b95
children	2e0fb4130bfb

rev	line source
2 a79188fe4a40 added new stuff Anselm R. Garbe <garbeam@wmii.de> parents: diff changeset	1 /*
a79188fe4a40 added new stuff Anselm R. Garbe <garbeam@wmii.de> parents: diff changeset	2 * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
a79188fe4a40 added new stuff Anselm R. Garbe <garbeam@wmii.de> parents: diff changeset	3 * See LICENSE file for license details.
a79188fe4a40 added new stuff Anselm R. Garbe <garbeam@wmii.de> parents: diff changeset	4 */
a79188fe4a40 added new stuff Anselm R. Garbe <garbeam@wmii.de> parents: diff changeset	5
a79188fe4a40 added new stuff Anselm R. Garbe <garbeam@wmii.de> parents: diff changeset	6 #include <stdarg.h>
a79188fe4a40 added new stuff Anselm R. Garbe <garbeam@wmii.de> parents: diff changeset	7 #include <stdio.h>
a79188fe4a40 added new stuff Anselm R. Garbe <garbeam@wmii.de> parents: diff changeset	8 #include <stdlib.h>
3 e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	9 #include <string.h>
5 e5018cae273f added several other stuff Anselm R. Garbe <garbeam@wmii.de> parents: 3 diff changeset	10 #include <sys/types.h>
e5018cae273f added several other stuff Anselm R. Garbe <garbeam@wmii.de> parents: 3 diff changeset	11 #include <sys/wait.h>
e5018cae273f added several other stuff Anselm R. Garbe <garbeam@wmii.de> parents: 3 diff changeset	12 #include <unistd.h>
e5018cae273f added several other stuff Anselm R. Garbe <garbeam@wmii.de> parents: 3 diff changeset	13
e5018cae273f added several other stuff Anselm R. Garbe <garbeam@wmii.de> parents: 3 diff changeset	14 #include "util.h"
2 a79188fe4a40 added new stuff Anselm R. Garbe <garbeam@wmii.de> parents: diff changeset	15
a79188fe4a40 added new stuff Anselm R. Garbe <garbeam@wmii.de> parents: diff changeset	16 void
a79188fe4a40 added new stuff Anselm R. Garbe <garbeam@wmii.de> parents: diff changeset	17 error(char *errstr, ...) {
a79188fe4a40 added new stuff Anselm R. Garbe <garbeam@wmii.de> parents: diff changeset	18 va_list ap;
a79188fe4a40 added new stuff Anselm R. Garbe <garbeam@wmii.de> parents: diff changeset	19 va_start(ap, errstr);
a79188fe4a40 added new stuff Anselm R. Garbe <garbeam@wmii.de> parents: diff changeset	20 vfprintf(stderr, errstr, ap);
a79188fe4a40 added new stuff Anselm R. Garbe <garbeam@wmii.de> parents: diff changeset	21 va_end(ap);
a79188fe4a40 added new stuff Anselm R. Garbe <garbeam@wmii.de> parents: diff changeset	22 exit(1);
a79188fe4a40 added new stuff Anselm R. Garbe <garbeam@wmii.de> parents: diff changeset	23 }
a79188fe4a40 added new stuff Anselm R. Garbe <garbeam@wmii.de> parents: diff changeset	24
3 e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	25 static void
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	26 bad_malloc(unsigned int size)
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	27 {
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	28 fprintf(stderr, "fatal: could not malloc() %d bytes\n",
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	29 (int) size);
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	30 exit(1);
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	31 }
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	32
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	33 void *
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	34 emallocz(unsigned int size)
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	35 {
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	36 void *res = calloc(1, size);
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	37 if(!res)
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	38 bad_malloc(size);
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	39 return res;
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	40 }
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	41
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	42 void *
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	43 emalloc(unsigned int size)
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	44 {
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	45 void *res = malloc(size);
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	46 if(!res)
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	47 bad_malloc(size);
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	48 return res;
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	49 }
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	50
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	51 void *
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	52 erealloc(void *ptr, unsigned int size)
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	53 {
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	54 void *res = realloc(ptr, size);
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	55 if(!res)
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	56 bad_malloc(size);
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	57 return res;
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	58 }
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	59
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	60 char *
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	61 estrdup(const char *str)
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	62 {
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	63 void *res = strdup(str);
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	64 if(!res)
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	65 bad_malloc(strlen(str));
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	66 return res;
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	67 }
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	68
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	69 void
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	70 failed_assert(char a, char file, int line)
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	71 {
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	72 fprintf(stderr, "Assertion \"%s\" failed at %s:%d\n", a, file, line);
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	73 abort();
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	74 }
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	75
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	76 void
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	77 swap(void p1, void p2)
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	78 {
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	79 void tmp = p1;
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	80 p1 = p2;
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	81 *p2 = tmp;
e969f3575b7a several new changes, made gridmenu working Anselm R. Garbe <garbeam@wmii.de> parents: 2 diff changeset	82 }
5 e5018cae273f added several other stuff Anselm R. Garbe <garbeam@wmii.de> parents: 3 diff changeset	83
e5018cae273f added several other stuff Anselm R. Garbe <garbeam@wmii.de> parents: 3 diff changeset	84 void
14 5c078b66347b added bar event timer Anselm R. Garbe <garbeam@wmii.de> parents: 11 diff changeset	85 spawn(Display dpy, char argv[])
5 e5018cae273f added several other stuff Anselm R. Garbe <garbeam@wmii.de> parents: 3 diff changeset	86 {
14 5c078b66347b added bar event timer Anselm R. Garbe <garbeam@wmii.de> parents: 11 diff changeset	87 if(!argv \|\| !argv[0])
5 e5018cae273f added several other stuff Anselm R. Garbe <garbeam@wmii.de> parents: 3 diff changeset	88 return;
e5018cae273f added several other stuff Anselm R. Garbe <garbeam@wmii.de> parents: 3 diff changeset	89 if(fork() == 0) {
e5018cae273f added several other stuff Anselm R. Garbe <garbeam@wmii.de> parents: 3 diff changeset	90 if(fork() == 0) {
e5018cae273f added several other stuff Anselm R. Garbe <garbeam@wmii.de> parents: 3 diff changeset	91 if(dpy)
e5018cae273f added several other stuff Anselm R. Garbe <garbeam@wmii.de> parents: 3 diff changeset	92 close(ConnectionNumber(dpy));
9 d567f430a81d fixed several stuff (gridwm gets better and better) Anselm R. Garbe <garbeam@wmii.de> parents: 6 diff changeset	93 setsid();
14 5c078b66347b added bar event timer Anselm R. Garbe <garbeam@wmii.de> parents: 11 diff changeset	94 execvp(argv[0], argv);
5c078b66347b added bar event timer Anselm R. Garbe <garbeam@wmii.de> parents: 11 diff changeset	95 fprintf(stderr, "gridwm: execvp %s", argv[0]);
5 e5018cae273f added several other stuff Anselm R. Garbe <garbeam@wmii.de> parents: 3 diff changeset	96 perror(" failed");
e5018cae273f added several other stuff Anselm R. Garbe <garbeam@wmii.de> parents: 3 diff changeset	97 }
e5018cae273f added several other stuff Anselm R. Garbe <garbeam@wmii.de> parents: 3 diff changeset	98 exit (0);
e5018cae273f added several other stuff Anselm R. Garbe <garbeam@wmii.de> parents: 3 diff changeset	99 }
e5018cae273f added several other stuff Anselm R. Garbe <garbeam@wmii.de> parents: 3 diff changeset	100 wait(0);
e5018cae273f added several other stuff Anselm R. Garbe <garbeam@wmii.de> parents: 3 diff changeset	101 }
6 e0cefb3981c8 implemented pipe_spawn Anselm R. Garbe <garbeam@wmii.de> parents: 5 diff changeset	102
e0cefb3981c8 implemented pipe_spawn Anselm R. Garbe <garbeam@wmii.de> parents: 5 diff changeset	103 void
14 5c078b66347b added bar event timer Anselm R. Garbe <garbeam@wmii.de> parents: 11 diff changeset	104 pipe_spawn(char buf, unsigned int len, Display dpy, char *argv[])
6 e0cefb3981c8 implemented pipe_spawn Anselm R. Garbe <garbeam@wmii.de> parents: 5 diff changeset	105 {
e0cefb3981c8 implemented pipe_spawn Anselm R. Garbe <garbeam@wmii.de> parents: 5 diff changeset	106 unsigned int l, n;
e0cefb3981c8 implemented pipe_spawn Anselm R. Garbe <garbeam@wmii.de> parents: 5 diff changeset	107 int pfd[2];
e0cefb3981c8 implemented pipe_spawn Anselm R. Garbe <garbeam@wmii.de> parents: 5 diff changeset	108
14 5c078b66347b added bar event timer Anselm R. Garbe <garbeam@wmii.de> parents: 11 diff changeset	109 if(!argv \|\| !argv[0])
6 e0cefb3981c8 implemented pipe_spawn Anselm R. Garbe <garbeam@wmii.de> parents: 5 diff changeset	110 return;
e0cefb3981c8 implemented pipe_spawn Anselm R. Garbe <garbeam@wmii.de> parents: 5 diff changeset	111
e0cefb3981c8 implemented pipe_spawn Anselm R. Garbe <garbeam@wmii.de> parents: 5 diff changeset	112 if(pipe(pfd) == -1) {
e0cefb3981c8 implemented pipe_spawn Anselm R. Garbe <garbeam@wmii.de> parents: 5 diff changeset	113 perror("pipe");
e0cefb3981c8 implemented pipe_spawn Anselm R. Garbe <garbeam@wmii.de> parents: 5 diff changeset	114 exit(1);
e0cefb3981c8 implemented pipe_spawn Anselm R. Garbe <garbeam@wmii.de> parents: 5 diff changeset	115 }
e0cefb3981c8 implemented pipe_spawn Anselm R. Garbe <garbeam@wmii.de> parents: 5 diff changeset	116
e0cefb3981c8 implemented pipe_spawn Anselm R. Garbe <garbeam@wmii.de> parents: 5 diff changeset	117 if(fork() == 0) {
e0cefb3981c8 implemented pipe_spawn Anselm R. Garbe <garbeam@wmii.de> parents: 5 diff changeset	118 if(dpy)
e0cefb3981c8 implemented pipe_spawn Anselm R. Garbe <garbeam@wmii.de> parents: 5 diff changeset	119 close(ConnectionNumber(dpy));
9 d567f430a81d fixed several stuff (gridwm gets better and better) Anselm R. Garbe <garbeam@wmii.de> parents: 6 diff changeset	120 setsid();
6 e0cefb3981c8 implemented pipe_spawn Anselm R. Garbe <garbeam@wmii.de> parents: 5 diff changeset	121 dup2(pfd[1], STDOUT_FILENO);
e0cefb3981c8 implemented pipe_spawn Anselm R. Garbe <garbeam@wmii.de> parents: 5 diff changeset	122 close(pfd[0]);
e0cefb3981c8 implemented pipe_spawn Anselm R. Garbe <garbeam@wmii.de> parents: 5 diff changeset	123 close(pfd[1]);
14 5c078b66347b added bar event timer Anselm R. Garbe <garbeam@wmii.de> parents: 11 diff changeset	124 execvp(argv[0], argv);
5c078b66347b added bar event timer Anselm R. Garbe <garbeam@wmii.de> parents: 11 diff changeset	125 fprintf(stderr, "gridwm: execvp %s", argv[0]);
6 e0cefb3981c8 implemented pipe_spawn Anselm R. Garbe <garbeam@wmii.de> parents: 5 diff changeset	126 perror(" failed");
e0cefb3981c8 implemented pipe_spawn Anselm R. Garbe <garbeam@wmii.de> parents: 5 diff changeset	127 }
e0cefb3981c8 implemented pipe_spawn Anselm R. Garbe <garbeam@wmii.de> parents: 5 diff changeset	128 else {
e0cefb3981c8 implemented pipe_spawn Anselm R. Garbe <garbeam@wmii.de> parents: 5 diff changeset	129 n = 0;
e0cefb3981c8 implemented pipe_spawn Anselm R. Garbe <garbeam@wmii.de> parents: 5 diff changeset	130 close(pfd[1]);
e0cefb3981c8 implemented pipe_spawn Anselm R. Garbe <garbeam@wmii.de> parents: 5 diff changeset	131 while(l > n) {
e0cefb3981c8 implemented pipe_spawn Anselm R. Garbe <garbeam@wmii.de> parents: 5 diff changeset	132 if((l = read(pfd[0], buf + n, len - n)) < 1)
e0cefb3981c8 implemented pipe_spawn Anselm R. Garbe <garbeam@wmii.de> parents: 5 diff changeset	133 break;
e0cefb3981c8 implemented pipe_spawn Anselm R. Garbe <garbeam@wmii.de> parents: 5 diff changeset	134 n += l;
e0cefb3981c8 implemented pipe_spawn Anselm R. Garbe <garbeam@wmii.de> parents: 5 diff changeset	135 }
e0cefb3981c8 implemented pipe_spawn Anselm R. Garbe <garbeam@wmii.de> parents: 5 diff changeset	136 close(pfd[0]);
16 359b6e563b95 several changes, new stuff Anselm R. Garbe <garbeam@wmii.de> parents: 15 diff changeset	137 buf[n < len ? n : len - 1] = 0;
6 e0cefb3981c8 implemented pipe_spawn Anselm R. Garbe <garbeam@wmii.de> parents: 5 diff changeset	138 }
e0cefb3981c8 implemented pipe_spawn Anselm R. Garbe <garbeam@wmii.de> parents: 5 diff changeset	139 wait(0);
e0cefb3981c8 implemented pipe_spawn Anselm R. Garbe <garbeam@wmii.de> parents: 5 diff changeset	140 }

Mercurial > aewl

annotate util.c @ 20:4560e0882c1d