]>
Dogcows Code - chaz/openbox/blob - plugins/menu/fifo_menu.c
a05989f8964accd3981122609cb25eacf90ae027
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
+
77 FIFO_MENU_DATA(menu
)->buflen
,
80 if (num_read
== 0) { /* eof */
81 unsigned long count
= 0;
87 FIFO_MENU_DATA(menu
)->buf
[FIFO_MENU_DATA(menu
)->buflen
] = '\0';
89 xmlDocPtr doc
= xmlParseMemory(FIFO_MENU_DATA(menu
)->buf
,
90 FIFO_MENU_DATA(menu
)->buflen
);
92 xmlNodePtr node
= xmlDocGetRootElement(doc
);
94 if (!xmlStrcasecmp(node
->name
, (const xmlChar
*) "fifo")) {
95 if ((node
= parse_find_node("item", node
->xmlChildrenNode
)))
96 parse_menu_full(doc
, node
, menu
, FALSE
);
99 fifo_menu_clean_up(menu
);
101 event_remove_fd(FIFO_MENU_DATA(menu
)->handler
->fd
);
103 if ((FIFO_MENU_DATA(menu
)->fd
=
104 open(FIFO_MENU_DATA(menu
)->fifo
,
105 O_NONBLOCK
| O_RDONLY
)) == -1) {
106 g_warning("Can't reopen FIFO");
107 fifo_menu_clean_up(menu
);
111 FIFO_MENU_DATA(menu
)->handler
->fd
= FIFO_MENU_DATA(menu
)->fd
;
113 event_add_fd_handler(FIFO_MENU_DATA(menu
)->handler
);
114 } else if (num_read
> 0) {
115 FIFO_MENU_DATA(menu
)->buflen
+= num_read
;
116 FIFO_MENU_DATA(menu
)->buf
[FIFO_MENU_DATA(menu
)->buflen
] = '\0';
121 void plugin_destroy (ObMenu
*m
)
123 fifo_menu_clean_up(m
);
124 if (FIFO_MENU_DATA(m
)->handler
!= NULL
) {
125 g_free(FIFO_MENU_DATA(m
)->handler
);
126 FIFO_MENU_DATA(m
)->handler
= NULL
;
129 if (FIFO_MENU_DATA(m
)->fifo
!= NULL
) {
130 g_free(FIFO_MENU_DATA(m
)->fifo
);
131 FIFO_MENU_DATA(m
)->fifo
= NULL
;
134 g_free(m
->plugin_data
);
139 void *plugin_create(PluginMenuCreateData
*data
)
148 char *label
= NULL
, *id
= NULL
;
150 d
= g_new(Fifo_Menu_Data
, 1);
152 parse_attr_string("id", data
->node
, &id
);
153 parse_attr_string("label", data
->node
, &label
);
155 m
= menu_new( (label
!= NULL
? label
: ""),
156 (id
!= NULL
? id
: PLUGIN_NAME
),
158 menu_add_entry(data
->parent
, menu_entry_new_submenu(
159 (label
!= NULL
? label
: ""),
169 m
->plugin
= PLUGIN_NAME
;
173 m
->plugin_data
= (void *)d
;
175 dir
= g_build_filename(g_get_home_dir(), ".openbox",
178 if (mkdir(dir
, S_IRWXU
| S_IRWXG
| S_IRWXO
) == -1 && errno
!= EEXIST
) {
179 /* technically, if ~/.openbox/fifo_menu exists and isn't a directory
180 this will fail, but we don't care because mkfifo will fail and warn
182 g_warning("Can't create %s: %s", dir
, strerror(errno
));
188 fifo
= g_build_filename(g_get_home_dir(), ".openbox",
191 if (mkfifo(fifo
, S_IRUSR
| S_IWUSR
|
192 S_IRGRP
| S_IWGRP
| /* let umask do its thing */
193 S_IROTH
| S_IWOTH
) == -1 && errno
!= EEXIST
) {
194 g_warning("Can't create FIFO %s: %s", fifo
, strerror(errno
));
201 /* open in non-blocking mode so we don't wait for a process to open FIFO
203 if ((d
->fd
= open(fifo
, O_NONBLOCK
| O_RDONLY
)) == -1) {
204 g_warning("Can't open FIFO %s: %s", fifo
, strerror(errno
));
213 h
= g_new(event_fd_handler
, 1);
216 g_warning("Out of memory");
226 h
->handler
= fifo_menu_handler
;
229 event_add_fd_handler(h
);
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