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https://github.com/git/git.git
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b7f20f7204
Use GIT_MAX_HEXSZ instead of GIT_SHA1_HEXSZ for an allocation so that it is sufficiently large. Switch a comparison to use the_hash_algo to determine the length of a hex object ID. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
84 lines
2.2 KiB
C
84 lines
2.2 KiB
C
#include "builtin.h"
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#include "commit.h"
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#include "tag.h"
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#include "merge-recursive.h"
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#include "xdiff-interface.h"
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static const char builtin_merge_recursive_usage[] =
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"git %s <base>... -- <head> <remote> ...";
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static const char *better_branch_name(const char *branch)
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{
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static char githead_env[8 + GIT_MAX_HEXSZ + 1];
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char *name;
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if (strlen(branch) != the_hash_algo->hexsz)
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return branch;
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xsnprintf(githead_env, sizeof(githead_env), "GITHEAD_%s", branch);
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name = getenv(githead_env);
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return name ? name : branch;
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}
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int cmd_merge_recursive(int argc, const char **argv, const char *prefix)
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{
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const struct object_id *bases[21];
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unsigned bases_count = 0;
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int i, failed;
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struct object_id h1, h2;
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struct merge_options o;
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struct commit *result;
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init_merge_options(&o);
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if (argv[0] && ends_with(argv[0], "-subtree"))
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o.subtree_shift = "";
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if (argc < 4)
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usagef(builtin_merge_recursive_usage, argv[0]);
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for (i = 1; i < argc; ++i) {
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const char *arg = argv[i];
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if (starts_with(arg, "--")) {
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if (!arg[2])
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break;
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if (parse_merge_opt(&o, arg + 2))
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die(_("unknown option %s"), arg);
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continue;
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}
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if (bases_count < ARRAY_SIZE(bases)-1) {
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struct object_id *oid = xmalloc(sizeof(struct object_id));
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if (get_oid(argv[i], oid))
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die(_("could not parse object '%s'"), argv[i]);
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bases[bases_count++] = oid;
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}
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else
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warning(Q_("cannot handle more than %d base. "
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"Ignoring %s.",
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"cannot handle more than %d bases. "
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"Ignoring %s.",
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(int)ARRAY_SIZE(bases)-1),
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(int)ARRAY_SIZE(bases)-1, argv[i]);
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}
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if (argc - i != 3) /* "--" "<head>" "<remote>" */
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die(_("not handling anything other than two heads merge."));
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o.branch1 = argv[++i];
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o.branch2 = argv[++i];
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if (get_oid(o.branch1, &h1))
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die(_("could not resolve ref '%s'"), o.branch1);
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if (get_oid(o.branch2, &h2))
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die(_("could not resolve ref '%s'"), o.branch2);
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o.branch1 = better_branch_name(o.branch1);
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o.branch2 = better_branch_name(o.branch2);
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if (o.verbosity >= 3)
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printf(_("Merging %s with %s\n"), o.branch1, o.branch2);
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failed = merge_recursive_generic(&o, &h1, &h2, bases_count, bases, &result);
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if (failed < 0)
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return 128; /* die() error code */
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return failed;
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}
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