Initial revision of "git", the information manager from hell

1 files changed, 51 insertions, 0 deletions

diff --git a/init-db.c b/init-db.c
new file mode 100644
index 0000000000..25dc13fe10
--- /dev/null
+++ b/init-db.c
@@ -0,0 +1,51 @@
+#include "cache.h"
+
+int main(int argc, char **argv)
+{
+	char *sha1_dir = getenv(DB_ENVIRONMENT), *path;
+	int len, i, fd;
+
+	if (mkdir(".dircache", 0700) < 0) {
+		perror("unable to create .dircache");
+		exit(1);
+	}
+
+	/*
+	 * If you want to, you can share the DB area with any number of branches.
+	 * That has advantages: you can save space by sharing all the SHA1 objects.
+	 * On the other hand, it might just make lookup slower and messier. You
+	 * be the judge.
+	 */
+	sha1_dir = getenv(DB_ENVIRONMENT);
+	if (sha1_dir) {
+		struct stat st;
+		if (!stat(sha1_dir, &st) < 0 && S_ISDIR(st.st_mode))
+			return;
+		fprintf(stderr, "DB_ENVIRONMENT set to bad directory %s: ", sha1_dir);
+	}
+
+	/*
+	 * The default case is to have a DB per managed directory. 
+	 */
+	sha1_dir = DEFAULT_DB_ENVIRONMENT;
+	fprintf(stderr, "defaulting to private storage area\n");
+	len = strlen(sha1_dir);
+	if (mkdir(sha1_dir, 0700) < 0) {
+		if (errno != EEXIST) {
+			perror(sha1_dir);
+			exit(1);
+		}
+	}
+	path = malloc(len + 40);
+	memcpy(path, sha1_dir, len);
+	for (i = 0; i < 256; i++) {
+		sprintf(path+len, "/%02x", i);
+		if (mkdir(path, 0700) < 0) {
+			if (errno != EEXIST) {
+				perror(path);
+				exit(1);
+			}
+		}
+	}
+	return 0;
+}