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bemenu-run.c
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bemenu-run.c
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#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <signal.h>
#include <unistd.h>
#include <dirent.h>
#include <assert.h>
#include "common/common.h"
static struct client client = {
.filter_mode = BM_FILTER_MODE_DMENU,
.title = "bemenu-run",
.monitor = -1,
};
struct paths {
char *path;
char *paths;
};
static char*
c_strdup(const char *str)
{
return cstrcopy(str, strlen(str));
}
static char*
strip_slash(char *str)
{
size_t size = strlen(str);
if (size > 0)
for (char *s = str + size - 1; *s == '/'; --s)
*s = 0;
return str;
}
static const char*
get_paths(const char *env, const char *default_paths, struct paths *state)
{
if (state->path && !*state->path) {
free(state->paths);
return NULL;
}
if (!state->paths) {
const char *paths;
if (!(paths = getenv(env)) || !paths[0])
paths = default_paths;
state->path = state->paths = c_strdup(paths);
}
if (!state->path || !state->paths)
return NULL;
char *path;
do {
size_t f;
path = state->path;
if ((f = strcspn(state->path, ":")) > 0) {
state->path += f + (path[f] ? 1 : 0);
path[f] = 0;
} else {
state->path += 1;
}
if (!*path) {
free(state->paths);
return NULL;
}
} while (path[0] != '/');
return strip_slash(path);
}
static int
compare(const void *a, const void *b)
{
const struct bm_item *ia = *(struct bm_item**)a, *ib = *(struct bm_item**)b;
return strcmp(bm_item_get_text(ia), bm_item_get_text(ib));
}
static void
read_items_to_menu_from_dir(struct bm_menu *menu, const char *path)
{
assert(menu && path);
DIR *dir;
if (!(dir = opendir(path)))
return;
struct dirent *file;
while ((file = readdir(dir))) {
if (file->d_type != DT_DIR && strlen(file->d_name) && file->d_name[0] != '.') {
struct bm_item *item;
if (!(item = bm_item_new(file->d_name)))
break;
bm_menu_add_item(menu, item);
}
}
closedir(dir);
uint32_t count;
struct bm_item **items = bm_menu_get_items(menu, &count);
qsort(items, count, sizeof(struct bm_item*), compare);
bool unique = true;
for (uint32_t i = 0; i + 1 < count; i += unique) {
if (!(unique = strcmp(bm_item_get_text(items[i]), bm_item_get_text(items[i + 1])))) {
bm_item_free(items[i]);
bm_menu_remove_item_at(menu, i);
items = bm_menu_get_items(menu, &count);
}
}
}
static void
read_items_to_menu_from_path(struct bm_menu *menu)
{
assert(menu);
const char *path;
struct paths state;
memset(&state, 0, sizeof(state));
while ((path = get_paths("PATH", "/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:/bin:/sbin", &state)))
read_items_to_menu_from_dir(menu, path);
}
static inline void ignore_ret(int useless, ...) { (void)useless; }
static void
launch(const struct client *client, const char *bin)
{
struct sigaction action = {
.sa_handler = SIG_DFL,
.sa_flags = SA_NOCLDWAIT
};
// do not care about childs
sigaction(SIGCHLD, &action, NULL);
if (!bin)
return;
if (!client->fork || fork() == 0) {
if (client->fork) {
setsid();
ignore_ret(0, freopen("/dev/null", "w", stdout));
ignore_ret(0, freopen("/dev/null", "w", stderr));
}
char **tokens;
if (!(tokens = tokenize_quoted_to_argv(bin, NULL, NULL)))
_exit(EXIT_FAILURE);
execvp(tokens[0], tokens);
_exit(EXIT_SUCCESS);
}
}
static void
item_cb(const struct client *client, struct bm_item *item)
{
if (client->no_exec) {
const char *text = bm_item_get_text(item);
printf("%s\n", (text ? text : ""));
} else {
launch(client, bm_item_get_text(item));
}
}
int
main(int argc, char **argv)
{
if (!bm_init())
return EXIT_FAILURE;
parse_args(&client, &argc, &argv);
struct bm_menu *menu;
if (!(menu = menu_with_options(&client)))
return EXIT_FAILURE;
read_items_to_menu_from_path(menu);
const enum bm_run_result status = run_menu(&client, menu, item_cb);
bm_menu_free(menu);
return (status == BM_RUN_RESULT_SELECTED ? EXIT_SUCCESS : EXIT_FAILURE);
}
/* vim: set ts=8 sw=4 tw=0 :*/