Multiple smaller changes.

- Remove the background image and libpng dependency
- Add a prompt
- Add xmalloc with out-of-memory handling
- Add beginnings of a rofi-like run cache

1 files changed, 56 insertions, 1 deletions

diff --git a/src/compgen.c b/src/compgen.c
index e04e0a5..8190a21 100644
--- a/src/compgen.c
+++ b/src/compgen.c
@@ -1,16 +1,71 @@
 #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.");
+		log_error("Couldn't retrieve PATH from environment.\n");
 		exit(EXIT_FAILURE);
 	}
 	struct string_vec programs = string_vec_create();