Mercurial > dwm-meillo
annotate util.c @ 11:ea9c08ec4b48
added gridsel to gridwm
| author | Anselm R. Garbe <garbeam@wmii.de> |
|---|---|
| date | Tue, 11 Jul 2006 13:21:57 +0200 |
| parents | d567f430a81d |
| children | 5c078b66347b |
| rev | line source |
|---|---|
| 2 | 1 /* |
| 2 * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com> | |
| 3 * See LICENSE file for license details. | |
| 4 */ | |
| 5 | |
| 6 #include <stdarg.h> | |
| 7 #include <stdio.h> | |
| 8 #include <stdlib.h> | |
|
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e969f3575b7a
several new changes, made gridmenu working
Anselm R. Garbe <garbeam@wmii.de>
parents:
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9 #include <string.h> |
| 5 | 10 #include <sys/types.h> |
| 11 #include <sys/wait.h> | |
| 12 #include <unistd.h> | |
| 11 | 13 #include <X11/Xatom.h> |
| 5 | 14 |
| 15 #include "util.h" | |
| 2 | 16 |
| 6 | 17 static char *shell = NULL; |
| 18 | |
| 2 | 19 void |
| 20 error(char *errstr, ...) { | |
| 21 va_list ap; | |
| 22 va_start(ap, errstr); | |
| 23 vfprintf(stderr, errstr, ap); | |
| 24 va_end(ap); | |
| 25 exit(1); | |
| 26 } | |
| 27 | |
|
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several new changes, made gridmenu working
Anselm R. Garbe <garbeam@wmii.de>
parents:
2
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28 static void |
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29 bad_malloc(unsigned int size) |
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parents:
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30 { |
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31 fprintf(stderr, "fatal: could not malloc() %d bytes\n", |
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32 (int) size); |
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33 exit(1); |
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parents:
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34 } |
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parents:
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35 |
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36 void * |
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37 emallocz(unsigned int size) |
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parents:
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38 { |
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39 void *res = calloc(1, size); |
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40 if(!res) |
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41 bad_malloc(size); |
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42 return res; |
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e969f3575b7a
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parents:
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changeset
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43 } |
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e969f3575b7a
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Anselm R. Garbe <garbeam@wmii.de>
parents:
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44 |
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e969f3575b7a
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Anselm R. Garbe <garbeam@wmii.de>
parents:
2
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changeset
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45 void * |
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parents:
2
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46 emalloc(unsigned int size) |
|
e969f3575b7a
several new changes, made gridmenu working
Anselm R. Garbe <garbeam@wmii.de>
parents:
2
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changeset
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47 { |
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parents:
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48 void *res = malloc(size); |
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e969f3575b7a
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Anselm R. Garbe <garbeam@wmii.de>
parents:
2
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changeset
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49 if(!res) |
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e969f3575b7a
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Anselm R. Garbe <garbeam@wmii.de>
parents:
2
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changeset
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50 bad_malloc(size); |
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e969f3575b7a
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Anselm R. Garbe <garbeam@wmii.de>
parents:
2
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changeset
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51 return res; |
|
e969f3575b7a
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Anselm R. Garbe <garbeam@wmii.de>
parents:
2
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changeset
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52 } |
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e969f3575b7a
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Anselm R. Garbe <garbeam@wmii.de>
parents:
2
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changeset
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53 |
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e969f3575b7a
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Anselm R. Garbe <garbeam@wmii.de>
parents:
2
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54 void * |
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55 erealloc(void *ptr, unsigned int size) |
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e969f3575b7a
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parents:
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56 { |
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57 void *res = realloc(ptr, size); |
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e969f3575b7a
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Anselm R. Garbe <garbeam@wmii.de>
parents:
2
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changeset
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58 if(!res) |
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e969f3575b7a
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Anselm R. Garbe <garbeam@wmii.de>
parents:
2
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changeset
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59 bad_malloc(size); |
|
e969f3575b7a
several new changes, made gridmenu working
Anselm R. Garbe <garbeam@wmii.de>
parents:
2
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changeset
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60 return res; |
|
e969f3575b7a
several new changes, made gridmenu working
Anselm R. Garbe <garbeam@wmii.de>
parents:
2
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changeset
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61 } |
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e969f3575b7a
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Anselm R. Garbe <garbeam@wmii.de>
parents:
2
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changeset
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62 |
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e969f3575b7a
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parents:
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63 char * |
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64 estrdup(const char *str) |
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e969f3575b7a
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Anselm R. Garbe <garbeam@wmii.de>
parents:
2
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changeset
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65 { |
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e969f3575b7a
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Anselm R. Garbe <garbeam@wmii.de>
parents:
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66 void *res = strdup(str); |
|
e969f3575b7a
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Anselm R. Garbe <garbeam@wmii.de>
parents:
2
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changeset
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67 if(!res) |
|
e969f3575b7a
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Anselm R. Garbe <garbeam@wmii.de>
parents:
2
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changeset
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68 bad_malloc(strlen(str)); |
|
e969f3575b7a
several new changes, made gridmenu working
Anselm R. Garbe <garbeam@wmii.de>
parents:
2
diff
changeset
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69 return res; |
|
e969f3575b7a
several new changes, made gridmenu working
Anselm R. Garbe <garbeam@wmii.de>
parents:
2
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changeset
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70 } |
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e969f3575b7a
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Anselm R. Garbe <garbeam@wmii.de>
parents:
2
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changeset
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71 |
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e969f3575b7a
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Anselm R. Garbe <garbeam@wmii.de>
parents:
2
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changeset
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72 void |
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parents:
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73 failed_assert(char *a, char *file, int line) |
|
e969f3575b7a
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Anselm R. Garbe <garbeam@wmii.de>
parents:
2
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changeset
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74 { |
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e969f3575b7a
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parents:
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75 fprintf(stderr, "Assertion \"%s\" failed at %s:%d\n", a, file, line); |
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e969f3575b7a
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76 abort(); |
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77 } |
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e969f3575b7a
several new changes, made gridmenu working
Anselm R. Garbe <garbeam@wmii.de>
parents:
2
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changeset
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78 |
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e969f3575b7a
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Anselm R. Garbe <garbeam@wmii.de>
parents:
2
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changeset
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79 void |
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80 swap(void **p1, void **p2) |
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e969f3575b7a
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Anselm R. Garbe <garbeam@wmii.de>
parents:
2
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changeset
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81 { |
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82 void *tmp = *p1; |
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e969f3575b7a
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Anselm R. Garbe <garbeam@wmii.de>
parents:
2
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changeset
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83 *p1 = *p2; |
|
e969f3575b7a
several new changes, made gridmenu working
Anselm R. Garbe <garbeam@wmii.de>
parents:
2
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changeset
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84 *p2 = tmp; |
|
e969f3575b7a
several new changes, made gridmenu working
Anselm R. Garbe <garbeam@wmii.de>
parents:
2
diff
changeset
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85 } |
| 5 | 86 |
| 87 void | |
| 6 | 88 spawn(Display *dpy, const char *cmd) |
| 5 | 89 { |
| 6 | 90 if(!shell && !(shell = getenv("SHELL"))) |
| 91 shell = "/bin/sh"; | |
| 92 | |
| 93 if(!cmd) | |
| 5 | 94 return; |
| 95 if(fork() == 0) { | |
| 96 if(fork() == 0) { | |
| 97 if(dpy) | |
| 98 close(ConnectionNumber(dpy)); | |
|
9
d567f430a81d
fixed several stuff (gridwm gets better and better)
Anselm R. Garbe <garbeam@wmii.de>
parents:
6
diff
changeset
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99 setsid(); |
|
d567f430a81d
fixed several stuff (gridwm gets better and better)
Anselm R. Garbe <garbeam@wmii.de>
parents:
6
diff
changeset
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100 fprintf(stderr, "gridwm: execlp %s %s -c %s", shell, shell, cmd); |
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d567f430a81d
fixed several stuff (gridwm gets better and better)
Anselm R. Garbe <garbeam@wmii.de>
parents:
6
diff
changeset
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101 execlp(shell, shell, "-c", cmd, NULL); |
|
d567f430a81d
fixed several stuff (gridwm gets better and better)
Anselm R. Garbe <garbeam@wmii.de>
parents:
6
diff
changeset
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102 fprintf(stderr, "gridwm: execlp %s", cmd); |
| 5 | 103 perror(" failed"); |
| 104 } | |
| 105 exit (0); | |
| 106 } | |
| 107 wait(0); | |
| 108 } | |
| 6 | 109 |
| 110 void | |
| 111 pipe_spawn(char *buf, unsigned int len, Display *dpy, const char *cmd) | |
| 112 { | |
| 113 unsigned int l, n; | |
| 114 int pfd[2]; | |
| 115 | |
| 116 if(!shell && !(shell = getenv("SHELL"))) | |
| 117 shell = "/bin/sh"; | |
| 118 | |
| 119 if(!cmd) | |
| 120 return; | |
| 121 | |
| 122 if(pipe(pfd) == -1) { | |
| 123 perror("pipe"); | |
| 124 exit(1); | |
| 125 } | |
| 126 | |
| 127 if(fork() == 0) { | |
| 128 if(dpy) | |
| 129 close(ConnectionNumber(dpy)); | |
|
9
d567f430a81d
fixed several stuff (gridwm gets better and better)
Anselm R. Garbe <garbeam@wmii.de>
parents:
6
diff
changeset
|
130 setsid(); |
| 6 | 131 dup2(pfd[1], STDOUT_FILENO); |
| 132 close(pfd[0]); | |
| 133 close(pfd[1]); | |
|
9
d567f430a81d
fixed several stuff (gridwm gets better and better)
Anselm R. Garbe <garbeam@wmii.de>
parents:
6
diff
changeset
|
134 execlp(shell, shell, "-c", cmd, NULL); |
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d567f430a81d
fixed several stuff (gridwm gets better and better)
Anselm R. Garbe <garbeam@wmii.de>
parents:
6
diff
changeset
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135 fprintf(stderr, "gridwm: execlp %s", cmd); |
| 6 | 136 perror(" failed"); |
| 137 } | |
| 138 else { | |
| 139 n = 0; | |
| 140 close(pfd[1]); | |
| 141 while(l > n) { | |
| 142 if((l = read(pfd[0], buf + n, len - n)) < 1) | |
| 143 break; | |
| 144 n += l; | |
| 145 } | |
| 146 close(pfd[0]); | |
| 147 buf[n - 1] = 0; | |
| 148 } | |
| 149 wait(0); | |
| 150 } | |
| 11 | 151 |
| 152 | |
| 153 unsigned char * | |
| 154 getselection(unsigned long offset, unsigned long *len, unsigned long *remain) | |
| 155 { | |
| 156 Display *dpy; | |
| 157 Atom xa_clip_string; | |
| 158 Window w; | |
| 159 XEvent ev; | |
| 160 Atom typeret; | |
| 161 int format; | |
| 162 unsigned char *data; | |
| 163 unsigned char *result = NULL; | |
| 164 | |
| 165 dpy = XOpenDisplay(0); | |
| 166 if(!dpy) | |
| 167 return NULL; | |
| 168 xa_clip_string = XInternAtom(dpy, "_SEL_STRING", False); | |
| 169 w = XCreateSimpleWindow(dpy, DefaultRootWindow(dpy), 10, 10, 200, 200, | |
| 170 1, CopyFromParent, CopyFromParent); | |
| 171 XConvertSelection(dpy, XA_PRIMARY, XA_STRING, xa_clip_string, | |
| 172 w, CurrentTime); | |
| 173 XFlush(dpy); | |
| 174 XNextEvent(dpy, &ev); | |
| 175 if(ev.type == SelectionNotify && ev.xselection.property != None) { | |
| 176 XGetWindowProperty(dpy, w, ev.xselection.property, offset, 4096L, False, | |
| 177 AnyPropertyType, &typeret, &format, len, remain, &data); | |
| 178 if(*len) { | |
| 179 result = emalloc(sizeof(unsigned char) * *len); | |
| 180 memcpy(result, data, *len); | |
| 181 } | |
| 182 XDeleteProperty(dpy, w, ev.xselection.property); | |
| 183 } | |
| 184 XDestroyWindow(dpy, w); | |
| 185 XCloseDisplay(dpy); | |
| 186 return result; | |
| 187 } |