f4609b896f
This also bumps the stable nixpkgs to 20.09 as of 2020-11-21, because there is some breakage in the git build related to the netrc credentials helper which someone has taken care of in nixpkgs. The stable channel is not used for anything other than git, so this should be fine. Change-Id: I3575a19dab09e1e9556cf8231d717de9890484fb
92 lines
2.4 KiB
C
92 lines
2.4 KiB
C
#include "cache.h"
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#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 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 xstrdup(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 xstrdup(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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char *better1, *better2;
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struct commit *result;
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init_merge_options(&o, the_repository);
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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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if (repo_read_index_unmerged(the_repository))
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die_resolve_conflict("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 = better1 = better_branch_name(o.branch1);
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o.branch2 = better2 = 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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free(better1);
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free(better2);
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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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