mirror of
https://github.com/git/git.git
synced 2024-11-02 07:17:58 +01:00
b2d62f161e
This patch updates pull.c, the engine that decides which objects are needed, given a commit to traverse from, to report which commit was calling for the object that cannot be retrieved from the remote side. This complements git-fsck-cache in that it checks the consistency of the remote repository for reachability. Signed-off-by: Junio C Hamano <junkio@cox.net>
107 lines
2.3 KiB
C
107 lines
2.3 KiB
C
#include "pull.h"
|
|
|
|
#include "cache.h"
|
|
#include "commit.h"
|
|
#include "tree.h"
|
|
|
|
int get_tree = 0;
|
|
int get_history = 0;
|
|
int get_all = 0;
|
|
static unsigned char current_commit_sha1[20];
|
|
|
|
static const char commitS[] = "commit";
|
|
static const char treeS[] = "tree";
|
|
static const char blobS[] = "blob";
|
|
|
|
static void report_missing(const char *what, const unsigned char *missing)
|
|
{
|
|
char missing_hex[41];
|
|
|
|
strcpy(missing_hex, sha1_to_hex(missing));;
|
|
fprintf(stderr,
|
|
"Cannot obtain needed %s %s\nwhile processing commit %s.\n",
|
|
what, missing_hex, sha1_to_hex(current_commit_sha1));
|
|
}
|
|
|
|
static int make_sure_we_have_it(const char *what, unsigned char *sha1)
|
|
{
|
|
int status;
|
|
if (has_sha1_file(sha1))
|
|
return 0;
|
|
status = fetch(sha1);
|
|
if (status && what)
|
|
report_missing(what, sha1);
|
|
return status;
|
|
}
|
|
|
|
static int process_tree(unsigned char *sha1)
|
|
{
|
|
struct tree *tree = lookup_tree(sha1);
|
|
struct tree_entry_list *entries;
|
|
|
|
if (parse_tree(tree))
|
|
return -1;
|
|
|
|
for (entries = tree->entries; entries; entries = entries->next) {
|
|
const char *what = entries->directory ? treeS : blobS;
|
|
if (make_sure_we_have_it(what, entries->item.tree->object.sha1))
|
|
return -1;
|
|
if (entries->directory) {
|
|
if (process_tree(entries->item.tree->object.sha1))
|
|
return -1;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int process_commit(unsigned char *sha1)
|
|
{
|
|
struct commit *obj = lookup_commit(sha1);
|
|
|
|
if (make_sure_we_have_it(commitS, sha1))
|
|
return -1;
|
|
|
|
if (parse_commit(obj))
|
|
return -1;
|
|
|
|
if (get_tree) {
|
|
if (make_sure_we_have_it(treeS, obj->tree->object.sha1))
|
|
return -1;
|
|
if (process_tree(obj->tree->object.sha1))
|
|
return -1;
|
|
if (!get_all)
|
|
get_tree = 0;
|
|
}
|
|
if (get_history) {
|
|
struct commit_list *parents = obj->parents;
|
|
for (; parents; parents = parents->next) {
|
|
if (has_sha1_file(parents->item->object.sha1))
|
|
continue;
|
|
if (make_sure_we_have_it(NULL,
|
|
parents->item->object.sha1)) {
|
|
/* The server might not have it, and
|
|
* we don't mind.
|
|
*/
|
|
continue;
|
|
}
|
|
if (process_commit(parents->item->object.sha1))
|
|
return -1;
|
|
memcpy(current_commit_sha1, sha1, 20);
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int pull(char *target)
|
|
{
|
|
int retval;
|
|
unsigned char sha1[20];
|
|
retval = get_sha1_hex(target, sha1);
|
|
if (retval)
|
|
return retval;
|
|
retval = make_sure_we_have_it(commitS, sha1);
|
|
if (retval)
|
|
return retval;
|
|
memcpy(current_commit_sha1, sha1, 20);
|
|
return process_commit(sha1);
|
|
}
|