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#include "cache.h"
#include "lockfile.h"
#include "commit.h"
#include "run-command.h"
#include "resolve-undo.h"
#include "tree-walk.h"
#include "unpack-trees.h"
#include "dir.h"
static const char *merge_argument(struct commit *commit)
{
if (commit)
return sha1_to_hex(commit->object.sha1);
else
return EMPTY_TREE_SHA1_HEX;
}
int try_merge_command(const char *strategy, size_t xopts_nr,
const char **xopts, struct commit_list *common,
const char *head_arg, struct commit_list *remotes)
{
struct argv_array args = ARGV_ARRAY_INIT;
int i, ret;
struct commit_list *j;
argv_array_pushf(&args, "merge-%s", strategy);
for (i = 0; i < xopts_nr; i++)
argv_array_pushf(&args, "--%s", xopts[i]);
for (j = common; j; j = j->next)
argv_array_push(&args, merge_argument(j->item));
argv_array_push(&args, "--");
argv_array_push(&args, head_arg);
for (j = remotes; j; j = j->next)
argv_array_push(&args, merge_argument(j->item));
ret = run_command_v_opt(args.argv, RUN_GIT_CMD);
argv_array_clear(&args);
discard_cache();
if (read_cache() < 0)
die(_("failed to read the cache"));
resolve_undo_clear();
return ret;
}
int checkout_fast_forward(const unsigned char *head,
const unsigned char *remote,
int overwrite_ignore)
{
struct tree *trees[MAX_UNPACK_TREES];
struct unpack_trees_options opts;
struct tree_desc t[MAX_UNPACK_TREES];
int i, nr_trees = 0;
struct dir_struct dir;
struct lock_file *lock_file = xcalloc(1, sizeof(struct lock_file));
refresh_cache(REFRESH_QUIET);
hold_locked_index(lock_file, 1);
memset(&trees, 0, sizeof(trees));
memset(&opts, 0, sizeof(opts));
memset(&t, 0, sizeof(t));
if (overwrite_ignore) {
memset(&dir, 0, sizeof(dir));
dir.flags |= DIR_SHOW_IGNORED;
setup_standard_excludes(&dir);
opts.dir = &dir;
}
opts.head_idx = 1;
opts.src_index = &the_index;
opts.dst_index = &the_index;
opts.update = 1;
opts.verbose_update = 1;
opts.merge = 1;
opts.fn = twoway_merge;
setup_unpack_trees_porcelain(&opts, "merge");
trees[nr_trees] = parse_tree_indirect(head);
if (!trees[nr_trees++])
return -1;
trees[nr_trees] = parse_tree_indirect(remote);
if (!trees[nr_trees++])
return -1;
for (i = 0; i < nr_trees; i++) {
parse_tree(trees[i]);
init_tree_desc(t+i, trees[i]->buffer, trees[i]->size);
}
if (unpack_trees(nr_trees, t, &opts))
return -1;
if (write_locked_index(&the_index, lock_file, COMMIT_LOCK))
die(_("unable to write new index file"));
return 0;
}
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