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Make it possible to set up libgit directly (instead of from the environment)

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This introduces a setup_git() function which is essentialy a (public)
backend for setup_git_env() which lets anyone specify custom sources
for the various paths instead of environment variables. Since the repositories
may get switched on the fly, this also updates code that caches paths to
invalidate them properly; I hope neither of those is a sweet spot.

It is used by Git.xs' xs__call_gate() to set up per-repository data
for libgit's consumption. No code actually takes advantage of it yet
but get_object() will in the next patches.

Signed-off-by: Petr Baudis <pasky@suse.cz>
Signed-off-by: Junio C Hamano <junkio@cox.net>
This commit is contained in:
Petr Baudis
2006-07-03 22:48:03 +02:00
committed by Junio C Hamano
parent 998c4daaf4
commit 0270083ded
7 changed files with 114 additions and 24 deletions
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23
commit.c
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@@ -163,6 +163,14 @@ int register_commit_graft(struct commit_graft *graft, int ignore_dups)
return 0;
}
void free_commit_grafts(void)
{
int pos = commit_graft_nr;
while (pos >= 0)
free(commit_graft[pos--]);
commit_graft_nr = 0;
}
struct commit_graft *read_graft_line(char *buf, int len)
{
/* The format is just "Commit Parent1 Parent2 ...\n" */
@@ -215,11 +223,18 @@ int read_graft_file(const char *graft_file)
static void prepare_commit_graft(void)
{
static int commit_graft_prepared;
char *graft_file;
static char *last_graft_file;
char *graft_file = get_graft_file();
if (last_graft_file) {
if (!strcmp(graft_file, last_graft_file))
return;
free_commit_grafts();
}
if (last_graft_file)
free(last_graft_file);
last_graft_file = strdup(graft_file);
if (commit_graft_prepared)
return;
graft_file = get_graft_file();
read_graft_file(graft_file);
commit_graft_prepared = 1;
}