8 #include "kernel/menu.h"
9 #include "kernel/event.h"
11 static char *PLUGIN_NAME = "fifo_menu";
13 typedef struct Fifo_Menu_Data{
15 char *buf; /* buffer to hold partially read menu */
16 unsigned long buflen; /* how many bytes are in the buffer */
17 int fd; /* file descriptor to read menu from */
18 event_fd_handler *handler;
21 #define FIFO_MENU(m) ((Menu *)m)
22 #define FIFO_MENU_DATA(m) ((Fifo_Menu_Data *)((Menu *)m)->plugin_data)
25 void fifo_menu_clean_up(Menu *m) {
26 if (FIFO_MENU_DATA(m)->buf != NULL) {
27 g_free(FIFO_MENU_DATA(m)->buf);
28 FIFO_MENU_DATA(m)->buf = NULL;
29 FIFO_MENU_DATA(m)->buflen = 0;
32 if (FIFO_MENU_DATA(m)->fd != -1) {
33 close(FIFO_MENU_DATA(m)->fd);
34 FIFO_MENU_DATA(m)->fd = -1;
38 void plugin_setup_config() { }
41 void plugin_shutdown() { }
43 void fifo_menu_handler(int fd, Menu *menu) {
45 unsigned long num_read;
47 /* because gdb is dumb */
48 Fifo_Menu_Data *d = FIFO_MENU_DATA(menu);
51 /* if the menu is shown this will go into busy loop :(
54 unsigned long num_realloc;
55 /* if we have less than a quarter BUFSIZ left, allocate more */
56 num_realloc = (BUFSIZ - (FIFO_MENU_DATA(menu)->buflen % BUFSIZ) <
60 tmpbuf = g_try_realloc(FIFO_MENU_DATA(menu)->buf,
61 FIFO_MENU_DATA(menu)->buflen + num_realloc);
64 g_warning("Unable to allocate memory for read()");
68 FIFO_MENU_DATA(menu)->buf = tmpbuf;
71 FIFO_MENU_DATA(menu)->buf + FIFO_MENU_DATA(menu)->buflen,
74 if (num_read == 0) { /* eof */
75 unsigned long count = 0;
83 (found = strchr(&FIFO_MENU_DATA(menu)->buf[count], '\n'))) {
84 FIFO_MENU_DATA(menu)->buf
85 [found - FIFO_MENU_DATA(menu)->buf] = '\0';
87 menu_entry_new_separator
88 (&FIFO_MENU_DATA(menu)->buf[count]));
89 count = found - FIFO_MENU_DATA(menu)->buf + 1;
92 FIFO_MENU_DATA(menu)->buf[FIFO_MENU_DATA(menu)->buflen] = '\0';
93 fifo_menu_clean_up(menu);
95 event_remove_fd(FIFO_MENU_DATA(menu)->handler->fd);
97 if ((FIFO_MENU_DATA(menu)->fd =
98 open(FIFO_MENU_DATA(menu)->fifo, O_NONBLOCK | O_RDONLY)) == -1) {
99 g_warning("Can't reopen FIFO");
100 fifo_menu_clean_up(menu);
104 FIFO_MENU_DATA(menu)->handler->fd = FIFO_MENU_DATA(menu)->fd;
106 event_add_fd_handler(FIFO_MENU_DATA(menu)->handler);
107 } else if (num_read > 0) {
108 FIFO_MENU_DATA(menu)->buflen += num_read;
109 FIFO_MENU_DATA(menu)->buf[FIFO_MENU_DATA(menu)->buflen] = '\0';
114 void plugin_destroy (Menu *m)
116 fifo_menu_clean_up(m);
117 if (FIFO_MENU_DATA(m)->handler != NULL) {
118 g_free(FIFO_MENU_DATA(m)->handler);
119 FIFO_MENU_DATA(m)->handler = NULL;
122 if (FIFO_MENU_DATA(m)->fifo != NULL) {
123 g_free(FIFO_MENU_DATA(m)->fifo);
124 FIFO_MENU_DATA(m)->fifo = NULL;
127 g_free(m->plugin_data);
132 void *plugin_create() /* TODO: need config */
138 Fifo_Menu_Data *d = g_new(Fifo_Menu_Data, 1);
139 Menu *m = menu_new("", PLUGIN_NAME, NULL);
146 m->plugin = PLUGIN_NAME;
150 m->plugin_data = (void *)d;
152 dir = g_build_filename(g_get_home_dir(), ".openbox", PLUGIN_NAME, NULL);
154 if (mkdir(dir, S_IRWXU | S_IRWXG | S_IRWXO) == -1 && errno != EEXIST) {
155 /* technically, if ~/.openbox/fifo_menu exists and isn't a directory
156 this will fail, but we don't care because mkfifo will fail and warn
158 g_warning("Can't create %s: %s", dir, strerror(errno));
164 fifo = g_build_filename(g_get_home_dir(), ".openbox", PLUGIN_NAME,
166 if (mkfifo(fifo, S_IRUSR | S_IWUSR |
167 S_IRGRP | S_IWGRP | /* let umask do its thing */
168 S_IROTH | S_IWOTH) == -1 && errno != EEXIST) {
169 g_warning("Can't create FIFO %s: %s", fifo, strerror(errno));
176 /* open in non-blocking mode so we don't wait for a process to open FIFO
178 if ((d->fd = open(fifo, O_NONBLOCK | O_RDONLY)) == -1) {
179 g_warning("Can't open FIFO %s: %s", fifo, strerror(errno));
188 h = g_new(event_fd_handler, 1);
191 g_warning("Out of memory");
201 h->handler = fifo_menu_handler;
204 event_add_fd_handler(h);