Some code cleanup.

[vor.git] / file.c

diff --git a/file.c b/file.c
new file mode 100644 (file)
index 0000000..b9bc7e2
--- /dev/null
+++ b/file.c
@@ -0,0 +1,117 @@
+/* Variations on RockDodger
+ * Copyright (C) 2004 Joshua Grams <josh@qualdan.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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include "config.h"
+#include "file.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+char *g_data_dir;
+char *g_score_file;
+mode_t g_score_mode;
+
+char *
+load_file(char *filename)
+{
+       static char r[MAX_PATH_LEN];
+       snprintf(r, MAX_PATH_LEN, "%s/%s", g_data_dir, filename);
+       return r;
+}
+
+int
+is_dir(char *dirname)
+{
+       struct stat buf;
+       stat(dirname, &buf);
+       return S_ISDIR(buf.st_mode);
+}
+
+int
+is_file(char *filename)
+{
+       struct stat buf;
+       stat(filename, &buf);
+       return S_ISREG(buf.st_mode);
+}
+
+int
+find_data_dir(void)
+{
+       int i;
+       char *data_options[3] = {
+               "./data",
+               getenv("VOR_DATA"),
+               "/usr/share/vor"
+       };
+
+       for(i=0; i<3; i++) {
+               g_data_dir = strdup(data_options[i]);
+               if(is_dir(g_data_dir)) return true;
+       }
+
+       fprintf(stderr, "Can't find VoR data! Tried:\n");
+       for(i=0; i<3; i++) {
+               fprintf(stderr, "\t%s\n", data_options[i]);
+       }
+       return false;
+}
+
+int
+find_score_file(void)
+{
+       g_score_file = load_file("scores");
+       g_score_mode = 0111;
+       if(is_file(g_score_file)) return true;
+
+       g_score_file = malloc(MAX_PATH_LEN);
+       snprintf(g_score_file, MAX_PATH_LEN,
+                       "%s/.vor-high", getenv("HOME"));
+       g_score_mode = 0177;
+       if(is_file(g_score_file)) return true;
+
+       return false;
+}
+
+int
+find_files(void)
+{
+       int r;
+       r = find_data_dir();
+       find_score_file();
+       return r;
+}
+
+FILE *
+open_score_file(char *mode)
+{
+       mode_t old_mask;
+       FILE *f = NULL;
+
+       if(!g_score_file) return f;
+
+       old_mask = umask(g_score_mode);
+       f = fopen(g_score_file, mode);
+
+       umask(old_mask);
+       return f;
+}