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git/init-db.c
Junio C Hamano 8ac069ac0a Introduce GIT_DIR environment variable.
During the mailing list discussion on renaming GIT_ environment
variables, people felt that having one environment that lets the
user (or Porcelain) specify both SHA1_FILE_DIRECTORY (now
GIT_OBJECT_DIRECTORY) and GIT_INDEX_FILE for the default layout
would be handy.  This change introduces GIT_DIR environment
variable, from which the defaults for GIT_INDEX_FILE and
GIT_OBJECT_DIRECTORY are derived.  When GIT_DIR is not defined,
it defaults to ".git".  GIT_INDEX_FILE defaults to
"$GIT_DIR/index" and GIT_OBJECT_DIRECTORY defaults to
"$GIT_DIR/objects".

Special thanks for ideas and discussions go to Petr Baudis and
Daniel Barkalow.  Bugs are mine ;-)

Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-05-09 22:57:58 -07:00

48 lines
1.1 KiB
C

/*
* GIT - The information manager from hell
*
* Copyright (C) Linus Torvalds, 2005
*/
#include "cache.h"
void safe_create_dir(const char *dir)
{
if (mkdir(dir, 0755) < 0) {
if (errno != EEXIST) {
perror(dir);
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. The default case is to have one DB per managed directory.
*/
int main(int argc, char **argv)
{
const char *sha1_dir;
char *path;
int len, i;
sha1_dir = get_object_directory();
if (!gitenv(DB_ENVIRONMENT) && !gitenv(GIT_DIR_ENVIRONMENT)) {
/* We create leading paths only when we fall back
* to local .git/objects, at least for now.
*/
safe_create_dir(DEFAULT_GIT_DIR_ENVIRONMENT);
fprintf(stderr, "defaulting to local storage area\n");
}
len = strlen(sha1_dir);
path = xmalloc(len + 40);
memcpy(path, sha1_dir, len);
safe_create_dir(sha1_dir);
for (i = 0; i < 256; i++) {
sprintf(path+len, "/%02x", i);
safe_create_dir(path);
}
return 0;
}