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Dogcows Code - chaz/openbox/blob - plugins/menu/fifo_menu.c
e5580b053e4abba7c12e463f4f8b7e3e86183b0c
10 #include "kernel/menu.h"
11 #include "kernel/event.h"
13 static char *PLUGIN_NAME
= "fifo_menu";
15 typedef struct Fifo_Menu_Data
{
17 char *buf
; /* buffer to hold partially read menu */
18 unsigned long buflen
; /* how many bytes are in the buffer */
19 int fd
; /* file descriptor to read menu from */
20 event_fd_handler
*handler
;
23 #define FIFO_MENU(m) ((ObMenu *)m)
24 #define FIFO_MENU_DATA(m) ((Fifo_Menu_Data *)((ObMenu *)m)->plugin_data)
27 void fifo_menu_clean_up(ObMenu
*m
) {
28 if (FIFO_MENU_DATA(m
)->buf
!= NULL
) {
29 g_free(FIFO_MENU_DATA(m
)->buf
);
30 FIFO_MENU_DATA(m
)->buf
= NULL
;
31 FIFO_MENU_DATA(m
)->buflen
= 0;
34 if (FIFO_MENU_DATA(m
)->fd
!= -1) {
35 close(FIFO_MENU_DATA(m
)->fd
);
36 FIFO_MENU_DATA(m
)->fd
= -1;
40 void plugin_setup_config() { }
43 void plugin_shutdown() { }
45 void fifo_menu_handler(int fd
, void *d
) {
48 unsigned long num_read
;
50 /* because gdb is dumb */
52 Fifo_Menu_Data
*d
= FIFO_MENU_DATA(menu
);
56 /* if the menu is shown this will go into busy loop :(
59 unsigned long num_realloc
;
60 /* if we have less than a quarter BUFSIZ left, allocate more */
61 num_realloc
= (BUFSIZ
- (FIFO_MENU_DATA(menu
)->buflen
% BUFSIZ
) <
65 tmpbuf
= g_try_realloc(FIFO_MENU_DATA(menu
)->buf
,
66 FIFO_MENU_DATA(menu
)->buflen
+ num_realloc
);
69 g_warning("Unable to allocate memory for read()");
73 FIFO_MENU_DATA(menu
)->buf
= tmpbuf
;
76 FIFO_MENU_DATA(menu
)->buf
+ FIFO_MENU_DATA(menu
)->buflen
,
79 if (num_read
== 0) { /* eof */
80 unsigned long count
= 0;
88 (found
= strchr(&FIFO_MENU_DATA(menu
)->buf
[count
], '\n'))) {
89 FIFO_MENU_DATA(menu
)->buf
90 [found
- FIFO_MENU_DATA(menu
)->buf
] = '\0';
92 menu_entry_new_separator
93 (&FIFO_MENU_DATA(menu
)->buf
[count
]));
94 count
= found
- FIFO_MENU_DATA(menu
)->buf
+ 1;
97 FIFO_MENU_DATA(menu
)->buf
[FIFO_MENU_DATA(menu
)->buflen
] = '\0';
98 fifo_menu_clean_up(menu
);
100 event_remove_fd(FIFO_MENU_DATA(menu
)->handler
->fd
);
102 if ((FIFO_MENU_DATA(menu
)->fd
=
103 open(FIFO_MENU_DATA(menu
)->fifo
, O_NONBLOCK
| O_RDONLY
)) == -1) {
104 g_warning("Can't reopen FIFO");
105 fifo_menu_clean_up(menu
);
109 FIFO_MENU_DATA(menu
)->handler
->fd
= FIFO_MENU_DATA(menu
)->fd
;
111 event_add_fd_handler(FIFO_MENU_DATA(menu
)->handler
);
112 } else if (num_read
> 0) {
113 FIFO_MENU_DATA(menu
)->buflen
+= num_read
;
114 FIFO_MENU_DATA(menu
)->buf
[FIFO_MENU_DATA(menu
)->buflen
] = '\0';
119 void plugin_destroy (ObMenu
*m
)
121 fifo_menu_clean_up(m
);
122 if (FIFO_MENU_DATA(m
)->handler
!= NULL
) {
123 g_free(FIFO_MENU_DATA(m
)->handler
);
124 FIFO_MENU_DATA(m
)->handler
= NULL
;
127 if (FIFO_MENU_DATA(m
)->fifo
!= NULL
) {
128 g_free(FIFO_MENU_DATA(m
)->fifo
);
129 FIFO_MENU_DATA(m
)->fifo
= NULL
;
132 g_free(m
->plugin_data
);
137 void *plugin_create() /* TODO: need config */
143 Fifo_Menu_Data
*d
= g_new(Fifo_Menu_Data
, 1);
144 ObMenu
*m
= menu_new("", PLUGIN_NAME
, NULL
);
151 m
->plugin
= PLUGIN_NAME
;
155 m
->plugin_data
= (void *)d
;
157 dir
= g_build_filename(g_get_home_dir(), ".openbox", PLUGIN_NAME
, NULL
);
159 if (mkdir(dir
, S_IRWXU
| S_IRWXG
| S_IRWXO
) == -1 && errno
!= EEXIST
) {
160 /* technically, if ~/.openbox/fifo_menu exists and isn't a directory
161 this will fail, but we don't care because mkfifo will fail and warn
163 g_warning("Can't create %s: %s", dir
, strerror(errno
));
169 fifo
= g_build_filename(g_get_home_dir(), ".openbox", PLUGIN_NAME
,
171 if (mkfifo(fifo
, S_IRUSR
| S_IWUSR
|
172 S_IRGRP
| S_IWGRP
| /* let umask do its thing */
173 S_IROTH
| S_IWOTH
) == -1 && errno
!= EEXIST
) {
174 g_warning("Can't create FIFO %s: %s", fifo
, strerror(errno
));
181 /* open in non-blocking mode so we don't wait for a process to open FIFO
183 if ((d
->fd
= open(fifo
, O_NONBLOCK
| O_RDONLY
)) == -1) {
184 g_warning("Can't open FIFO %s: %s", fifo
, strerror(errno
));
193 h
= g_new(event_fd_handler
, 1);
196 g_warning("Out of memory");
206 h
->handler
= fifo_menu_handler
;
209 event_add_fd_handler(h
);
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