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#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 int make_sure_we_have_it(unsigned char *sha1)
{
if (has_sha1_file(sha1))
return 0;
return fetch(sha1);
}
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) {
if (make_sure_we_have_it(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(sha1))
return -1;
if (parse_commit(obj))
return -1;
if (get_tree) {
if (make_sure_we_have_it(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(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;
}
}
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(sha1);
if (retval)
return retval;
return process_commit(sha1);
}
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