#include "dir.h"
#include "run-command.h"
#include "quote.h"
+#include "tempfile.h"
#include "lockfile.h"
#include "cache-tree.h"
#include "refs.h"
static int write_state_text(const struct am_state *state,
const char *name, const char *string)
{
- const char *fmt;
-
- if (*string && string[strlen(string) - 1] != '\n')
- fmt = "%s\n";
- else
- fmt = "%s";
- return write_file(am_path(state, name), 1, fmt, string);
+ return write_file(am_path(state, name), "%s", string);
}
static int write_state_count(const struct am_state *state,
const char *name, int value)
{
- return write_file(am_path(state, name), 1, "%d\n", value);
+ return write_file(am_path(state, name), "%d", value);
}
static int write_state_bool(const struct am_state *state,
exit(128);
}
+static void am_signoff(struct strbuf *sb)
+{
+ char *cp;
+ struct strbuf mine = STRBUF_INIT;
+
+ /* Does it end with our own sign-off? */
+ strbuf_addf(&mine, "\n%s%s\n",
+ sign_off_header,
+ fmt_name(getenv("GIT_COMMITTER_NAME"),
+ getenv("GIT_COMMITTER_EMAIL")));
+ if (mine.len < sb->len &&
+ !strcmp(mine.buf, sb->buf + sb->len - mine.len))
+ goto exit; /* no need to duplicate */
+
+ /* Does it have any Signed-off-by: in the text */
+ for (cp = sb->buf;
+ cp && *cp && (cp = strstr(cp, sign_off_header)) != NULL;
+ cp = strchr(cp, '\n')) {
+ if (sb->buf == cp || cp[-1] == '\n')
+ break;
+ }
+
+ strbuf_addstr(sb, mine.buf + !!cp);
+exit:
+ strbuf_release(&mine);
+}
+
/**
* Appends signoff to the "msg" field of the am_state.
*/
struct strbuf sb = STRBUF_INIT;
strbuf_attach(&sb, state->msg, state->msg_len, state->msg_len);
- append_signoff(&sb, 0, 0);
+ am_signoff(&sb);
state->msg = strbuf_detach(&sb, &state->msg_len);
}
strbuf_addstr(&msg, "\n\n");
if (strbuf_read_file(&msg, am_path(state, "msg"), 0) < 0)
die_errno(_("could not read '%s'"), am_path(state, "msg"));
- stripspace(&msg, 0);
+ strbuf_stripspace(&msg, 0);
if (state->signoff)
- append_signoff(&msg, 0, 0);
+ am_signoff(&msg);
assert(!state->author_name);
state->author_name = strbuf_detach(&author_name, NULL);
return 0;
}
+/**
+ * Do the three-way merge using fake ancestor, his tree constructed
+ * from the fake ancestor and the postimage of the patch, and our
+ * state.
+ */
+static int run_fallback_merge_recursive(const struct am_state *state,
+ unsigned char *orig_tree,
+ unsigned char *our_tree,
+ unsigned char *his_tree)
+{
+ struct child_process cp = CHILD_PROCESS_INIT;
+ int status;
+
+ cp.git_cmd = 1;
+
+ argv_array_pushf(&cp.env_array, "GITHEAD_%s=%.*s",
+ sha1_to_hex(his_tree), linelen(state->msg), state->msg);
+ if (state->quiet)
+ argv_array_push(&cp.env_array, "GIT_MERGE_VERBOSITY=0");
+
+ argv_array_push(&cp.args, "merge-recursive");
+ argv_array_push(&cp.args, sha1_to_hex(orig_tree));
+ argv_array_push(&cp.args, "--");
+ argv_array_push(&cp.args, sha1_to_hex(our_tree));
+ argv_array_push(&cp.args, sha1_to_hex(his_tree));
+
+ status = run_command(&cp) ? (-1) : 0;
+ discard_cache();
+ read_cache();
+ return status;
+}
+
/**
* Attempt a threeway merge, using index_path as the temporary index.
*/
{
unsigned char orig_tree[GIT_SHA1_RAWSZ], his_tree[GIT_SHA1_RAWSZ],
our_tree[GIT_SHA1_RAWSZ];
- const unsigned char *bases[1] = {orig_tree};
- struct merge_options o;
- struct commit *result;
- char *his_tree_name;
if (get_sha1("HEAD", our_tree) < 0)
hashcpy(our_tree, EMPTY_TREE_SHA1_BIN);
* changes.
*/
- init_merge_options(&o);
-
- o.branch1 = "HEAD";
- his_tree_name = xstrfmt("%.*s", linelen(state->msg), state->msg);
- o.branch2 = his_tree_name;
-
- if (state->quiet)
- o.verbosity = 0;
-
- if (merge_recursive_generic(&o, our_tree, his_tree, 1, bases, &result)) {
+ if (run_fallback_merge_recursive(state, orig_tree, our_tree, his_tree)) {
rerere(state->allow_rerere_autoupdate);
- free(his_tree_name);
return error(_("Failed to merge in the changes."));
}
- free(his_tree_name);
return 0;
}
return 0;
}
+/**
+ * Merges a tree into the index. The index's stat info will take precedence
+ * over the merged tree's. Returns 0 on success, -1 on failure.
+ */
+static int merge_tree(struct tree *tree)
+{
+ struct lock_file *lock_file;
+ struct unpack_trees_options opts;
+ struct tree_desc t[1];
+
+ if (parse_tree(tree))
+ return -1;
+
+ lock_file = xcalloc(1, sizeof(struct lock_file));
+ hold_locked_index(lock_file, 1);
+
+ memset(&opts, 0, sizeof(opts));
+ opts.head_idx = 1;
+ opts.src_index = &the_index;
+ opts.dst_index = &the_index;
+ opts.merge = 1;
+ opts.fn = oneway_merge;
+ init_tree_desc(&t[0], tree->buffer, tree->size);
+
+ if (unpack_trees(1, t, &opts)) {
+ rollback_lock_file(lock_file);
+ return -1;
+ }
+
+ if (write_locked_index(&the_index, lock_file, COMMIT_LOCK))
+ die(_("unable to write new index file"));
+
+ return 0;
+}
+
/**
* Clean the index without touching entries that are not modified between
* `head` and `remote`.
*/
static int clean_index(const unsigned char *head, const unsigned char *remote)
{
- struct lock_file *lock_file;
struct tree *head_tree, *remote_tree, *index_tree;
unsigned char index[GIT_SHA1_RAWSZ];
- struct pathspec pathspec;
head_tree = parse_tree_indirect(head);
if (!head_tree)
if (fast_forward_to(index_tree, remote_tree, 0))
return -1;
- memset(&pathspec, 0, sizeof(pathspec));
-
- lock_file = xcalloc(1, sizeof(struct lock_file));
- hold_locked_index(lock_file, 1);
-
- if (read_tree(remote_tree, 0, &pathspec)) {
- rollback_lock_file(lock_file);
+ if (merge_tree(remote_tree))
return -1;
- }
-
- if (write_locked_index(&the_index, lock_file, COMMIT_LOCK))
- die(_("unable to write new index file"));
remove_branch_state();
static void am_rerere_clear(void)
{
struct string_list merge_rr = STRING_LIST_INIT_DUP;
- int fd = setup_rerere(&merge_rr, 0);
-
- if (fd < 0)
- return;
-
rerere_clear(&merge_rr);
string_list_clear(&merge_rr, 1);
}
RESUME_ABORT
};
+static int git_am_config(const char *k, const char *v, void *cb)
+{
+ int status;
+
+ status = git_gpg_config(k, v, NULL);
+ if (status)
+ return status;
+
+ return git_default_config(k, v, NULL);
+}
+
int cmd_am(int argc, const char **argv, const char *prefix)
{
struct am_state state;
int in_progress;
const char * const usage[] = {
- N_("git am [options] [(<mbox>|<Maildir>)...]"),
- N_("git am [options] (--continue | --skip | --abort)"),
+ N_("git am [<options>] [(<mbox>|<Maildir>)...]"),
+ N_("git am [<options>] (--continue | --skip | --abort)"),
NULL
};
OPT_BOOL('i', "interactive", &state.interactive,
N_("run interactively")),
OPT_HIDDEN_BOOL('b', "binary", &binary,
- N_("(historical option -- no-op")),
+ N_("historical option -- no-op")),
OPT_BOOL('3', "3way", &state.threeway,
N_("allow fall back on 3way merging if needed")),
OPT__QUIET(&state.quiet, N_("be quiet")),
OPT_END()
};
- git_config(git_default_config, NULL);
+ git_config(git_am_config, NULL);
am_state_init(&state, git_path("rebase-apply"));