X-Git-Url: http://git.wpitchoune.net/gitweb/?a=blobdiff_plain;f=src%2Ffcache.c;fp=src%2Ffcache.c;h=2f7648663463534008d102f10150a3b982041831;hb=46060dff64e29c944d2d70d446b14850f686a0e4;hp=0000000000000000000000000000000000000000;hpb=79b84fe8eb9db4d6a0a8f32d705dd75383cd6366;p=ppastats.git

diff --git a/src/fcache.c b/src/fcache.c
new file mode 100644
index 0000000..2f76486
--- /dev/null
+++ b/src/fcache.c
@@ -0,0 +1,127 @@
+/*
+ * Copyright (C) 2011-2012 jeanfi@gmail.com
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ */
+
+#include <libintl.h>
+#define _(String) gettext(String)
+
+#include <libgen.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "fcache.h"
+#include "io.h"
+#include "log.h"
+
+static const char *cache_dir;
+
+static const char *get_cache_dir()
+{
+	char *home;
+
+	if (!cache_dir) {
+		home = getenv("HOME");
+
+		if (home) {
+			cache_dir = malloc(strlen(home)
+					   + 1 + strlen(".ppastats/cache")
+					   + 1);
+			sprintf((char *)cache_dir,
+				"%s/%s", home, ".ppastats/cache");
+
+			mkdirs(cache_dir, 0777);
+		} else {
+			log_warn(_("$HOME not defined"));
+		}
+	}
+
+	return cache_dir;
+}
+
+static char *key_to_path(const char *key)
+{
+	char *path;
+	const char *dir;
+
+	if (!key || !*key || *key != '/')
+		return NULL;
+
+	dir = get_cache_dir();
+	if (!dir)
+		return NULL;
+
+	path = malloc(strlen(dir) + 1 + strlen(key) + strlen("/data") + 1);
+	sprintf(path, "%s%s.data", dir, key);
+
+	return path;
+}
+
+char *fcache_get(const char *key)
+{
+	char *path, *content;
+
+	path = key_to_path(key);
+	if (!path) {
+		log_err(_("file cache, invalid key: %s"), key);
+		return NULL;
+	}
+
+	content = file_get_content(path);
+
+	if (content)
+		log_debug(_("file cache hit %s"), key);
+	else
+		log_debug(_("file cache miss %s %s"), key, path);
+
+	free(path);
+
+	return content;
+}
+
+void fcache_put(const char *key, const char *value)
+{
+	char *path, *dir, *tmp;
+	FILE *f;
+
+	path = key_to_path(key);
+	if (!path)
+		return ;
+
+	tmp = strdup(path);
+	dir = dirname(tmp);
+	mkdirs(dir, 0777);
+	free(tmp);
+
+	f = fopen(path, "w");
+
+	if (f) {
+		fputs(value, f);
+
+		fclose(f);
+	} else {
+		log_err(_("Failed to open %s"), path);
+	}
+
+	free(path);
+}
+
+void fcache_cleanup()
+{
+	free((char *)cache_dir);
+}