Mercurial > hg > rlgwebd

annotate dglwatcher.c @ 191:9758ca68e7f1

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Add support for Advanced Rogue 7 and XRogue.
author John "Elwin" Edwards
date Tue, 23 Jun 2015 12:09:02 -0400
parents fba1b34e7554
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
155
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
1 #include <stdio.h>
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
2 #include <stdlib.h>
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
3 #include <string.h>
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
4 #include <sys/inotify.h>
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
5 #include <sys/select.h>
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
6 #include <unistd.h>
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
7 #include <limits.h>
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
8 #include <dirent.h>
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
9
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
10 struct watchdir {
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
11 int wd;
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
12 char *name;
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
13 };
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
14
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
15 char ibuf[sizeof(struct inotify_event) + NAME_MAX + 1];
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
16
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
17 int startwatch(int ifd, char *dir, struct watchdir *w) {
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
18 DIR *dstream;
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
19 struct dirent *ent;
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
20
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
21 w->name = dir;
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
22 w->wd = inotify_add_watch(ifd, dir, IN_CREATE|IN_DELETE|IN_DELETE_SELF);
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
23 if (w->wd < 0) {
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
24 fprintf(stderr, "Could not watch %s\n", dir);
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
25 return 1;
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
26 }
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
27 dstream = opendir(dir);
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
28 if (dstream == NULL) {
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
29 fprintf(stderr, "%s is not a readable directory\n", dir);
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
30 inotify_rm_watch(ifd, w->wd);
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
31 w->wd = -1;
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
32 return 1;
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
33 }
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
34 ent = readdir(dstream);
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
35 while (ent != NULL) {
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
36 if (strcmp(ent->d_name, ".") && strcmp(ent->d_name, ".."))
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
37 printf("E %s/%s\n", dir, ent->d_name);
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
38 ent = readdir(dstream);
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
39 }
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
40 closedir(dstream);
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
41 fflush(stdout);
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
42 return 0;
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
43 }
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
44
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
45 int main(int argc, char *argv[]) {
166
66fef65c34e7 watcher: exit if errors occur.
John "Elwin" Edwards
parents: 155
diff changeset
46 int ifd, rsize, off, done, nwatchers, i, result;
155
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
47 char typecode;
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
48 struct inotify_event *iev;
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
49 fd_set rfds;
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
50 struct watchdir *watchers;
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
51
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
52 done = 0;
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
53 nwatchers = argc - 1;
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
54 iev = (struct inotify_event *) ibuf;
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
55 ifd = inotify_init();
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
56 if (nwatchers == 0) {
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
57 watchers = malloc(sizeof(struct watchdir));
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
58 nwatchers = 1;
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
59 startwatch(ifd, ".", watchers);
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
60 }
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
61 else {
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
62 watchers = malloc(nwatchers * sizeof(struct watchdir));
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
63 for (i = 0; i < nwatchers; i++) {
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
64 startwatch(ifd, argv[i+1], watchers + i);
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
65 }
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
66 }
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
67
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
68 while (!done) {
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
69 FD_ZERO(&rfds);
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
70 FD_SET(0, &rfds);
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
71 FD_SET(ifd, &rfds);
166
66fef65c34e7 watcher: exit if errors occur.
John "Elwin" Edwards
parents: 155
diff changeset
72 result = select(ifd + 1, &rfds, NULL, NULL, NULL);
66fef65c34e7 watcher: exit if errors occur.
John "Elwin" Edwards
parents: 155
diff changeset
73 if (result < 0) {
66fef65c34e7 watcher: exit if errors occur.
John "Elwin" Edwards
parents: 155
diff changeset
74 /* Something went wrong. */
66fef65c34e7 watcher: exit if errors occur.
John "Elwin" Edwards
parents: 155
diff changeset
75 break;
66fef65c34e7 watcher: exit if errors occur.
John "Elwin" Edwards
parents: 155
diff changeset
76 }
155
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
77 if (FD_ISSET(ifd, &rfds)) {
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
78 off = 0;
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
79 rsize = read(ifd, ibuf, sizeof(struct inotify_event) + NAME_MAX + 1);
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
80 while (off < rsize) {
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
81 iev = (struct inotify_event *) (ibuf + off);
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
82 if (iev->mask & IN_CREATE)
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
83 typecode = 'C';
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
84 else if (iev->mask & IN_DELETE)
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
85 typecode = 'D';
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
86 else
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
87 typecode = '?';
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
88 for (i = 0; i < nwatchers; i++) {
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
89 if (watchers[i].wd == iev->wd)
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
90 printf("%c %s/%s\n", typecode, watchers[i].name, iev->name);
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
91 }
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
92 off += sizeof(struct inotify_event) + iev->len;
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
93 }
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
94 fflush(stdout);
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
95 }
245a2959f504 Begin support for watching dgamelaunch games.
John "Elwin" Edwards
parents:
diff changeset
96 if (FD_ISSET(0, &rfds)) {
166
66fef65c34e7 watcher: exit if errors occur.
John "Elwin" Edwards
parents: 155
diff changeset
97 result = read(0, &typecode, 1);
66fef65c34e7 watcher: exit if errors occur.
John "Elwin" Edwards
parents: 155
diff changeset
98 if (result <= 0) {
66fef65c34e7 watcher: exit if errors occur.
John "Elwin" Edwards
parents: 155
diff changeset
99 /* EOF on stdin: controlling process probably died. */
66fef65c34e7 watcher: exit if errors occur.
John "Elwin" Edwards
parents: 155
diff changeset
100 done = 1;
66fef65c34e7 watcher: exit if errors occur.
John "Elwin" Edwards
parents: 155
diff changeset
101 }
155