12 #include "kernel/menu.h"
13 #include "kernel/timer.h"
14 #include "timed_menu.h"
15 #include "kernel/action.h"
16 #include "kernel/event.h"
18 #define TIMED_MENU(m) ((ObMenu *)m)
19 #define TIMED_MENU_DATA(m) ((Timed_Menu_Data *)((ObMenu *)m)->plugin_data)
20 static char *PLUGIN_NAME
= "timed_menu";
23 TIMED_MENU_PIPE
, /* read entries from a child process' output */
24 TIMED_MENU_STAT
/* reread entries from file when timestamp changes */
30 char *command
; /* for the PIPE */
31 char *buf
; /* buffer to hold partially read menu */
32 unsigned long buflen
; /* how many bytes are in the buffer */
33 int fd
; /* file descriptor to read menu from */
34 pid_t pid
; /* pid of child process in PIPE */
35 time_t mtime
; /* time of last modification */
39 void plugin_setup_config() { }
42 void plugin_shutdown() { }
44 void timed_menu_clean_up(ObMenu
*m
) {
45 if (TIMED_MENU_DATA(m
)->buf
!= NULL
) {
46 fprintf(stderr
, "%s", TIMED_MENU_DATA(m
)->buf
);
47 g_free(TIMED_MENU_DATA(m
)->buf
);
48 TIMED_MENU_DATA(m
)->buf
= NULL
;
51 TIMED_MENU_DATA(m
)->buflen
= 0;
53 if (TIMED_MENU_DATA(m
)->fd
!= -1) {
54 event_remove_fd(TIMED_MENU_DATA(m
)->fd
);
55 close(TIMED_MENU_DATA(m
)->fd
);
56 TIMED_MENU_DATA(m
)->fd
= -1;
59 if (TIMED_MENU_DATA(m
)->pid
!= -1) {
60 waitpid(TIMED_MENU_DATA(m
)->pid
, NULL
, 0);
61 TIMED_MENU_DATA(m
)->pid
= -1;
64 TIMED_MENU_DATA(m
)->mtime
= 0;
67 void timed_menu_read_pipe(int fd
, void *d
)
71 unsigned long num_read
;
73 /* because gdb is dumb */
75 Timed_Menu_Data
*d
= TIMED_MENU_DATA(menu
);
79 unsigned long num_realloc
;
80 /* if we have less than a quarter BUFSIZ left, allocate more */
81 num_realloc
= (BUFSIZ
- (TIMED_MENU_DATA(menu
)->buflen
% BUFSIZ
) <
85 tmpbuf
= g_try_realloc(TIMED_MENU_DATA(menu
)->buf
,
86 TIMED_MENU_DATA(menu
)->buflen
+ num_realloc
);
89 g_warning("Unable to allocate memory for read()");
93 TIMED_MENU_DATA(menu
)->buf
= tmpbuf
;
96 TIMED_MENU_DATA(menu
)->buf
+ TIMED_MENU_DATA(menu
)->buflen
,
99 unsigned long count
= 0;
101 menu
->invalid
= TRUE
;
104 /* TEMP: list them */
106 (found
= strchr(&TIMED_MENU_DATA(menu
)->buf
[count
], '\n'))) {
107 TIMED_MENU_DATA(menu
)->buf
108 [found
- TIMED_MENU_DATA(menu
)->buf
] = '\0';
110 menu_entry_new_separator
111 (&TIMED_MENU_DATA(menu
)->buf
[count
]));
112 count
= found
- TIMED_MENU_DATA(menu
)->buf
+ 1;
115 TIMED_MENU_DATA(menu
)->buf
[TIMED_MENU_DATA(menu
)->buflen
] = '\0';
116 timed_menu_clean_up(menu
);
117 } else if (num_read
> 0) {
118 TIMED_MENU_DATA(menu
)->buflen
+= num_read
;
119 TIMED_MENU_DATA(menu
)->buf
[TIMED_MENU_DATA(menu
)->buflen
] = '\0';
120 } else { /* num_read < 1 */
121 g_warning("Error on read %s", strerror(errno
));
122 timed_menu_clean_up(menu
);
126 void timed_menu_timeout_handler(void *d
)
129 if (!data
->shown
&& TIMED_MENU_DATA(data
)->fd
== -1) {
130 switch (TIMED_MENU_DATA(data
)->type
) {
131 case (TIMED_MENU_PIPE
): {
132 /* if the menu is not shown, run a process and use its output
135 /* I hate you glib in all your hideous forms */
141 args
[2] = TIMED_MENU_DATA(data
)->command
;
143 if (g_spawn_async_with_pipes(
147 G_SPAWN_SEARCH_PATH
| G_SPAWN_DO_NOT_REAP_CHILD
,
155 event_fd_handler
*h
= g_new(event_fd_handler
, 1);
156 TIMED_MENU_DATA(data
)->fd
= h
->fd
= child_stdout
;
157 TIMED_MENU_DATA(data
)->pid
= child_pid
;
158 h
->handler
= timed_menu_read_pipe
;
160 event_add_fd_handler(h
);
162 g_warning("unable to spawn child");
167 case (TIMED_MENU_STAT
): {
168 struct stat stat_buf
;
170 if (stat(TIMED_MENU_DATA(data
)->command
, &stat_buf
) == -1) {
171 g_warning("Unable to stat %s: %s",
172 TIMED_MENU_DATA(data
)->command
,
177 if (stat_buf
.st_mtime
> TIMED_MENU_DATA(data
)->mtime
) {
178 g_warning("file changed");
179 TIMED_MENU_DATA(data
)->mtime
= stat_buf
.st_mtime
;
187 void *plugin_create()
189 Timed_Menu_Data
*d
= g_new(Timed_Menu_Data
, 1);
190 ObMenu
*m
= menu_new("", PLUGIN_NAME
, NULL
);
192 m
->plugin
= PLUGIN_NAME
;
194 d
->type
= TIMED_MENU_STAT
;
195 d
->timer
= timer_start(6000000, &timed_menu_timeout_handler
, m
);
196 d
->command
= "/home/woodblock/timed_menu_stat";
203 m
->plugin_data
= (void *)d
;
205 timed_menu_timeout_handler(m
);
209 void plugin_destroy (void *m
)
211 timed_menu_clean_up(m
);
212 /* this will be freed by timer_* */
213 timer_stop( ((Timed_Menu_Data
*)TIMED_MENU(m
)->plugin_data
)->timer
);
215 g_free( TIMED_MENU(m
)->plugin_data
);