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#include <dirent.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include "log.h"
#include "string_vec.h"
#include "xmalloc.h"
static const char *default_state_dir = ".local/state";
static const char *histfile_basename = "tofi-history";
static char *get_histfile_path() {
char *histfile_name;
const char *state_path = getenv("XDG_STATE_HOME");
if (state_path == NULL) {
const char *home = getenv("HOME");
if (home == NULL) {
log_error("Couldn't retrieve HOME from environment.\n");
exit(EXIT_FAILURE);
}
size_t len = strlen(home) + 1
+ strlen(default_state_dir) + 1
+ strlen(histfile_basename) + 1;
histfile_name = xmalloc(len);
snprintf(
histfile_name,
len,
"%s/%s/%s",
home,
default_state_dir,
histfile_basename);
} else {
size_t len = strlen(state_path) + 1
+ strlen(histfile_basename) + 1;
histfile_name = xmalloc(len);
snprintf(
histfile_name,
len,
"%s/%s",
state_path,
histfile_basename);
}
return histfile_name;
}
static void load_history()
{
char *name = get_histfile_path();
FILE *histfile = fopen(name, "rb");
free(name);
if (histfile == NULL) {
return;
}
}
struct string_vec compgen()
{
load_history();
log_debug("Retrieving PATH.\n");
const char *env_path = getenv("PATH");
if (env_path == NULL) {
log_error("Couldn't retrieve PATH from environment.\n");
exit(EXIT_FAILURE);
}
struct string_vec programs = string_vec_create();
char *path = strdup(env_path);
char *saveptr = NULL;
char *path_entry = strtok_r(path, ":", &saveptr);
log_debug("Scanning PATH for binaries.\n");
while (path_entry != NULL) {
DIR *dir = opendir(path_entry);
if (dir != NULL) {
int fd = dirfd(dir);
struct dirent *d;
while ((d = readdir(dir)) != NULL) {
struct stat sb;
if (fstatat(fd, d->d_name, &sb, 0) == -1) {
continue;
}
if (!(sb.st_mode & S_IXUSR)) {
continue;
}
if (!S_ISREG(sb.st_mode)) {
continue;
}
string_vec_add(&programs, d->d_name);
}
closedir(dir);
}
path_entry = strtok_r(NULL, ":", &saveptr);
}
free(path);
log_debug("Sorting results.\n");
string_vec_sort(&programs);
log_debug("Making unique.\n");
string_vec_uniq(&programs);
log_debug("Done.\n");
return programs;
}
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