git/builtin-merge-recursive.c

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#include "cache.h"
#include "commit.h"
#include "tag.h"
#include "merge-recursive.h"
static const char *better_branch_name(const char *branch)
{
static char githead_env[8 + 40 + 1];
char *name;
if (strlen(branch) != 40)
return branch;
sprintf(githead_env, "GITHEAD_%s", branch);
name = getenv(githead_env);
return name ? name : branch;
}
int cmd_merge_recursive(int argc, const char **argv, const char *prefix)
{
const char *bases[21];
unsigned bases_count = 0;
int i, failed;
const char *branch1, *branch2;
unsigned char h1[20], h2[20];
int subtree_merge = 0;
if (argv[0]) {
int namelen = strlen(argv[0]);
if (8 < namelen &&
!strcmp(argv[0] + namelen - 8, "-subtree"))
subtree_merge = 1;
}
git_config(merge_recursive_config, NULL);
merge_recursive_setup(subtree_merge);
if (argc < 4)
die("Usage: %s <base>... -- <head> <remote> ...\n", argv[0]);
for (i = 1; i < argc; ++i) {
if (!strcmp(argv[i], "--")) {
bases[bases_count] = NULL;
break;
}
if (bases_count < ARRAY_SIZE(bases)-1)
bases[bases_count++] = argv[i];
else
warning("Cannot handle more than %zu bases. "
"Ignoring %s.", ARRAY_SIZE(bases)-1, argv[i]);
}
if (argc - i != 3) /* "--" "<head>" "<remote>" */
die("Not handling anything other than two heads merge.");
branch1 = argv[++i];
branch2 = argv[++i];
if (get_sha1(branch1, h1))
die("Could not resolve ref '%s'", branch1);
if (get_sha1(branch2, h2))
die("Could not resolve ref '%s'", branch2);
branch1 = better_branch_name(branch1);
branch2 = better_branch_name(branch2);
if (merge_recursive_verbosity >= 3)
printf("Merging %s with %s\n", branch1, branch2);
failed = merge_recursive_generic(bases, h1, branch1, h2, branch2);
if (failed < 0)
return 128; /* die() error code */
return failed;
}