Mercurial > dwm-meillo
annotate util.c @ 14:5c078b66347b
added bar event timer
| author | Anselm R. Garbe <garbeam@wmii.de> |
|---|---|
| date | Tue, 11 Jul 2006 18:15:11 +0200 |
| parents | ea9c08ec4b48 |
| children | 00d4d52b231f |
| 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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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 |
| 17 void | |
| 18 error(char *errstr, ...) { | |
| 19 va_list ap; | |
| 20 va_start(ap, errstr); | |
| 21 vfprintf(stderr, errstr, ap); | |
| 22 va_end(ap); | |
| 23 exit(1); | |
| 24 } | |
| 25 | |
|
3
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several new changes, made gridmenu working
Anselm R. Garbe <garbeam@wmii.de>
parents:
2
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26 static void |
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27 bad_malloc(unsigned int size) |
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Anselm R. Garbe <garbeam@wmii.de>
parents:
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28 { |
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29 fprintf(stderr, "fatal: could not malloc() %d bytes\n", |
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parents:
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30 (int) size); |
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parents:
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31 exit(1); |
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Anselm R. Garbe <garbeam@wmii.de>
parents:
2
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32 } |
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parents:
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33 |
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parents:
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34 void * |
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35 emallocz(unsigned int size) |
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parents:
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36 { |
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37 void *res = calloc(1, size); |
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38 if(!res) |
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39 bad_malloc(size); |
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e969f3575b7a
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parents:
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40 return res; |
|
e969f3575b7a
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Anselm R. Garbe <garbeam@wmii.de>
parents:
2
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changeset
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41 } |
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Anselm R. Garbe <garbeam@wmii.de>
parents:
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42 |
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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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43 void * |
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Anselm R. Garbe <garbeam@wmii.de>
parents:
2
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changeset
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44 emalloc(unsigned int size) |
|
e969f3575b7a
several new changes, made gridmenu working
Anselm R. Garbe <garbeam@wmii.de>
parents:
2
diff
changeset
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45 { |
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Anselm R. Garbe <garbeam@wmii.de>
parents:
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46 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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47 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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48 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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49 return res; |
|
e969f3575b7a
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Anselm R. Garbe <garbeam@wmii.de>
parents:
2
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changeset
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50 } |
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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 |
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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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52 void * |
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53 erealloc(void *ptr, unsigned int size) |
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e969f3575b7a
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Anselm R. Garbe <garbeam@wmii.de>
parents:
2
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54 { |
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parents:
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55 void *res = realloc(ptr, size); |
|
e969f3575b7a
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Anselm R. Garbe <garbeam@wmii.de>
parents:
2
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changeset
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56 if(!res) |
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e969f3575b7a
several new changes, made gridmenu working
Anselm R. Garbe <garbeam@wmii.de>
parents:
2
diff
changeset
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57 bad_malloc(size); |
|
e969f3575b7a
several new changes, made gridmenu working
Anselm R. Garbe <garbeam@wmii.de>
parents:
2
diff
changeset
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58 return res; |
|
e969f3575b7a
several new changes, made gridmenu working
Anselm R. Garbe <garbeam@wmii.de>
parents:
2
diff
changeset
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59 } |
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e969f3575b7a
several new changes, made gridmenu working
Anselm R. Garbe <garbeam@wmii.de>
parents:
2
diff
changeset
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60 |
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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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61 char * |
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62 estrdup(const char *str) |
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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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63 { |
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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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64 void *res = strdup(str); |
|
e969f3575b7a
several new changes, made gridmenu working
Anselm R. Garbe <garbeam@wmii.de>
parents:
2
diff
changeset
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65 if(!res) |
|
e969f3575b7a
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Anselm R. Garbe <garbeam@wmii.de>
parents:
2
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changeset
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66 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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67 return res; |
|
e969f3575b7a
several new changes, made gridmenu working
Anselm R. Garbe <garbeam@wmii.de>
parents:
2
diff
changeset
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68 } |
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e969f3575b7a
several new changes, made gridmenu working
Anselm R. Garbe <garbeam@wmii.de>
parents:
2
diff
changeset
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69 |
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e969f3575b7a
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Anselm R. Garbe <garbeam@wmii.de>
parents:
2
diff
changeset
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70 void |
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71 failed_assert(char *a, char *file, int line) |
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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 { |
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e969f3575b7a
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parents:
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73 fprintf(stderr, "Assertion \"%s\" failed at %s:%d\n", a, file, line); |
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e969f3575b7a
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parents:
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74 abort(); |
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75 } |
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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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76 |
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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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77 void |
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78 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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79 { |
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parents:
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80 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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81 *p1 = *p2; |
|
e969f3575b7a
several new changes, made gridmenu working
Anselm R. Garbe <garbeam@wmii.de>
parents:
2
diff
changeset
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82 *p2 = tmp; |
|
e969f3575b7a
several new changes, made gridmenu working
Anselm R. Garbe <garbeam@wmii.de>
parents:
2
diff
changeset
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83 } |
| 5 | 84 |
| 85 void | |
| 14 | 86 spawn(Display *dpy, char *argv[]) |
| 5 | 87 { |
| 14 | 88 if(!argv || !argv[0]) |
| 5 | 89 return; |
| 90 if(fork() == 0) { | |
| 91 if(fork() == 0) { | |
| 92 if(dpy) | |
| 93 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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94 setsid(); |
| 14 | 95 execvp(argv[0], argv); |
| 96 fprintf(stderr, "gridwm: execvp %s", argv[0]); | |
| 5 | 97 perror(" failed"); |
| 98 } | |
| 99 exit (0); | |
| 100 } | |
| 101 wait(0); | |
| 102 } | |
| 6 | 103 |
| 104 void | |
| 14 | 105 pipe_spawn(char *buf, unsigned int len, Display *dpy, char *argv[]) |
| 6 | 106 { |
| 107 unsigned int l, n; | |
| 108 int pfd[2]; | |
| 109 | |
| 14 | 110 if(!argv || !argv[0]) |
| 6 | 111 return; |
| 112 | |
| 113 if(pipe(pfd) == -1) { | |
| 114 perror("pipe"); | |
| 115 exit(1); | |
| 116 } | |
| 117 | |
| 118 if(fork() == 0) { | |
| 119 if(dpy) | |
| 120 close(ConnectionNumber(dpy)); | |
|
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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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121 setsid(); |
| 6 | 122 dup2(pfd[1], STDOUT_FILENO); |
| 123 close(pfd[0]); | |
| 124 close(pfd[1]); | |
| 14 | 125 execvp(argv[0], argv); |
| 126 fprintf(stderr, "gridwm: execvp %s", argv[0]); | |
| 6 | 127 perror(" failed"); |
| 128 } | |
| 129 else { | |
| 130 n = 0; | |
| 131 close(pfd[1]); | |
| 132 while(l > n) { | |
| 133 if((l = read(pfd[0], buf + n, len - n)) < 1) | |
| 134 break; | |
| 135 n += l; | |
| 136 } | |
| 137 close(pfd[0]); | |
| 138 buf[n - 1] = 0; | |
| 139 } | |
| 140 wait(0); | |
| 141 } | |
| 11 | 142 |
| 143 | |
| 144 unsigned char * | |
| 145 getselection(unsigned long offset, unsigned long *len, unsigned long *remain) | |
| 146 { | |
| 147 Display *dpy; | |
| 148 Atom xa_clip_string; | |
| 149 Window w; | |
| 150 XEvent ev; | |
| 151 Atom typeret; | |
| 152 int format; | |
| 153 unsigned char *data; | |
| 154 unsigned char *result = NULL; | |
| 155 | |
| 156 dpy = XOpenDisplay(0); | |
| 157 if(!dpy) | |
| 158 return NULL; | |
| 159 xa_clip_string = XInternAtom(dpy, "_SEL_STRING", False); | |
| 160 w = XCreateSimpleWindow(dpy, DefaultRootWindow(dpy), 10, 10, 200, 200, | |
| 161 1, CopyFromParent, CopyFromParent); | |
| 162 XConvertSelection(dpy, XA_PRIMARY, XA_STRING, xa_clip_string, | |
| 163 w, CurrentTime); | |
| 164 XFlush(dpy); | |
| 165 XNextEvent(dpy, &ev); | |
| 166 if(ev.type == SelectionNotify && ev.xselection.property != None) { | |
| 167 XGetWindowProperty(dpy, w, ev.xselection.property, offset, 4096L, False, | |
| 168 AnyPropertyType, &typeret, &format, len, remain, &data); | |
| 169 if(*len) { | |
| 170 result = emalloc(sizeof(unsigned char) * *len); | |
| 171 memcpy(result, data, *len); | |
| 172 } | |
| 173 XDeleteProperty(dpy, w, ev.xselection.property); | |
| 174 } | |
| 175 XDestroyWindow(dpy, w); | |
| 176 XCloseDisplay(dpy); | |
| 177 return result; | |
| 178 } |