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authorJunio C Hamano <gitster@pobox.com>2010-12-08 19:24:12 (GMT)
committerJunio C Hamano <gitster@pobox.com>2010-12-08 19:24:12 (GMT)
commit657072f3ac5519f146a947253c9959909b38c293 (patch)
tree0c2cf3f119816c8f0da1ec5216f38381a042f068 /builtin
parentf04aa35eb6117d99f5abf9630961b2c2651d3ed1 (diff)
parent35d2fffdb857836cc46f5a4ada525a246ddd5e11 (diff)
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Merge branch 'jh/notes-merge'
* jh/notes-merge: (23 commits) Provide 'git merge --abort' as a synonym to 'git reset --merge' cmd_merge(): Parse options before checking MERGE_HEAD Provide 'git notes get-ref' to easily retrieve current notes ref git notes merge: Add testcases for merging notes trees at different fanouts git notes merge: Add another auto-resolving strategy: "cat_sort_uniq" git notes merge: --commit should fail if underlying notes ref has moved git notes merge: List conflicting notes in notes merge commit message git notes merge: Manual conflict resolution, part 2/2 git notes merge: Manual conflict resolution, part 1/2 Documentation: Preliminary docs on 'git notes merge' git notes merge: Add automatic conflict resolvers (ours, theirs, union) git notes merge: Handle real, non-conflicting notes merges builtin/notes.c: Refactor creation of notes commits. git notes merge: Initial implementation handling trivial merges only builtin/notes.c: Split notes ref DWIMmery into a separate function notes.c: Use two newlines (instead of one) when concatenating notes (trivial) t3303: Indent with tabs instead of spaces for consistency notes.h/c: Propagate combine_notes_fn return value to add_note() and beyond notes.h/c: Allow combine_notes functions to remove notes notes.c: Reorder functions in preparation for next commit ... Conflicts: builtin.h
Diffstat (limited to 'builtin')
-rw-r--r--builtin/merge.c47
-rw-r--r--builtin/notes.c268
2 files changed, 265 insertions, 50 deletions
diff --git a/builtin/merge.c b/builtin/merge.c
index c24a7be..3921cd3 100644
--- a/builtin/merge.c
+++ b/builtin/merge.c
@@ -57,6 +57,7 @@ static const char *branch;
static int option_renormalize;
static int verbosity;
static int allow_rerere_auto;
+static int abort_current_merge;
static struct strategy all_strategy[] = {
{ "recursive", DEFAULT_TWOHEAD | NO_TRIVIAL },
@@ -197,6 +198,8 @@ static struct option builtin_merge_options[] = {
"message to be used for the merge commit (if any)",
option_parse_message),
OPT__VERBOSITY(&verbosity),
+ OPT_BOOLEAN(0, "abort", &abort_current_merge,
+ "abort the current in-progress merge"),
OPT_END()
};
@@ -919,22 +922,6 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
const char *best_strategy = NULL, *wt_strategy = NULL;
struct commit_list **remotes = &remoteheads;
- if (read_cache_unmerged()) {
- die_resolve_conflict("merge");
- }
- if (file_exists(git_path("MERGE_HEAD"))) {
- /*
- * There is no unmerged entry, don't advise 'git
- * add/rm <file>', just 'git commit'.
- */
- if (advice_resolve_conflict)
- die("You have not concluded your merge (MERGE_HEAD exists).\n"
- "Please, commit your changes before you can merge.");
- else
- die("You have not concluded your merge (MERGE_HEAD exists).");
- }
-
- resolve_undo_clear();
/*
* Check if we are _not_ on a detached HEAD, i.e. if there is a
* current branch.
@@ -953,6 +940,34 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
argc = parse_options(argc, argv, prefix, builtin_merge_options,
builtin_merge_usage, 0);
+
+ if (abort_current_merge) {
+ int nargc = 2;
+ const char *nargv[] = {"reset", "--merge", NULL};
+
+ if (!file_exists(git_path("MERGE_HEAD")))
+ die("There is no merge to abort (MERGE_HEAD missing).");
+
+ /* Invoke 'git reset --merge' */
+ return cmd_reset(nargc, nargv, prefix);
+ }
+
+ if (read_cache_unmerged())
+ die_resolve_conflict("merge");
+
+ if (file_exists(git_path("MERGE_HEAD"))) {
+ /*
+ * There is no unmerged entry, don't advise 'git
+ * add/rm <file>', just 'git commit'.
+ */
+ if (advice_resolve_conflict)
+ die("You have not concluded your merge (MERGE_HEAD exists).\n"
+ "Please, commit your changes before you can merge.");
+ else
+ die("You have not concluded your merge (MERGE_HEAD exists).");
+ }
+ resolve_undo_clear();
+
if (verbosity < 0)
show_diffstat = 0;
diff --git a/builtin/notes.c b/builtin/notes.c
index c85cbf5..4d5556e 100644
--- a/builtin/notes.c
+++ b/builtin/notes.c
@@ -17,6 +17,7 @@
#include "run-command.h"
#include "parse-options.h"
#include "string-list.h"
+#include "notes-merge.h"
static const char * const git_notes_usage[] = {
"git notes [--ref <notes_ref>] [list [<object>]]",
@@ -25,8 +26,12 @@ static const char * const git_notes_usage[] = {
"git notes [--ref <notes_ref>] append [-m <msg> | -F <file> | (-c | -C) <object>] [<object>]",
"git notes [--ref <notes_ref>] edit [<object>]",
"git notes [--ref <notes_ref>] show [<object>]",
+ "git notes [--ref <notes_ref>] merge [-v | -q] [-s <strategy> ] <notes_ref>",
+ "git notes merge --commit [-v | -q]",
+ "git notes merge --abort [-v | -q]",
"git notes [--ref <notes_ref>] remove [<object>]",
"git notes [--ref <notes_ref>] prune [-n | -v]",
+ "git notes [--ref <notes_ref>] get-ref",
NULL
};
@@ -61,6 +66,13 @@ static const char * const git_notes_show_usage[] = {
NULL
};
+static const char * const git_notes_merge_usage[] = {
+ "git notes merge [<options>] <notes_ref>",
+ "git notes merge --commit [<options>]",
+ "git notes merge --abort [<options>]",
+ NULL
+};
+
static const char * const git_notes_remove_usage[] = {
"git notes remove [<object>]",
NULL
@@ -71,6 +83,11 @@ static const char * const git_notes_prune_usage[] = {
NULL
};
+static const char * const git_notes_get_ref_usage[] = {
+ "git notes get-ref",
+ NULL
+};
+
static const char note_template[] =
"\n"
"#\n"
@@ -83,6 +100,16 @@ struct msg_arg {
struct strbuf buf;
};
+static void expand_notes_ref(struct strbuf *sb)
+{
+ if (!prefixcmp(sb->buf, "refs/notes/"))
+ return; /* we're happy */
+ else if (!prefixcmp(sb->buf, "notes/"))
+ strbuf_insert(sb, 0, "refs/", 5);
+ else
+ strbuf_insert(sb, 0, "refs/notes/", 11);
+}
+
static int list_each_note(const unsigned char *object_sha1,
const unsigned char *note_sha1, char *note_path,
void *cb_data)
@@ -271,18 +298,17 @@ static int parse_reedit_arg(const struct option *opt, const char *arg, int unset
return parse_reuse_arg(opt, arg, unset);
}
-int commit_notes(struct notes_tree *t, const char *msg)
+void commit_notes(struct notes_tree *t, const char *msg)
{
- struct commit_list *parent;
- unsigned char tree_sha1[20], prev_commit[20], new_commit[20];
struct strbuf buf = STRBUF_INIT;
+ unsigned char commit_sha1[20];
if (!t)
t = &default_notes_tree;
if (!t->initialized || !t->ref || !*t->ref)
die("Cannot commit uninitialized/unreferenced notes tree");
if (!t->dirty)
- return 0; /* don't have to commit an unchanged tree */
+ return; /* don't have to commit an unchanged tree */
/* Prepare commit message and reflog message */
strbuf_addstr(&buf, "notes: "); /* commit message starts at index 7 */
@@ -290,27 +316,10 @@ int commit_notes(struct notes_tree *t, const char *msg)
if (buf.buf[buf.len - 1] != '\n')
strbuf_addch(&buf, '\n'); /* Make sure msg ends with newline */
- /* Convert notes tree to tree object */
- if (write_notes_tree(t, tree_sha1))
- die("Failed to write current notes tree to database");
-
- /* Create new commit for the tree object */
- if (!read_ref(t->ref, prev_commit)) { /* retrieve parent commit */
- parent = xmalloc(sizeof(*parent));
- parent->item = lookup_commit(prev_commit);
- parent->next = NULL;
- } else {
- hashclr(prev_commit);
- parent = NULL;
- }
- if (commit_tree(buf.buf + 7, tree_sha1, parent, new_commit, NULL))
- die("Failed to commit notes tree to database");
-
- /* Update notes ref with new commit */
- update_ref(buf.buf, t->ref, new_commit, prev_commit, 0, DIE_ON_ERR);
+ create_notes_commit(t, NULL, buf.buf + 7, commit_sha1);
+ update_ref(buf.buf, t->ref, commit_sha1, NULL, 0, DIE_ON_ERR);
strbuf_release(&buf);
- return 0;
}
combine_notes_fn parse_combine_notes_fn(const char *v)
@@ -321,6 +330,8 @@ combine_notes_fn parse_combine_notes_fn(const char *v)
return combine_notes_ignore;
else if (!strcasecmp(v, "concatenate"))
return combine_notes_concatenate;
+ else if (!strcasecmp(v, "cat_sort_uniq"))
+ return combine_notes_cat_sort_uniq;
else
return NULL;
}
@@ -573,8 +584,8 @@ static int add(int argc, const char **argv, const char *prefix)
if (is_null_sha1(new_note))
remove_note(t, object);
- else
- add_note(t, object, new_note, combine_notes_overwrite);
+ else if (add_note(t, object, new_note, combine_notes_overwrite))
+ die("BUG: combine_notes_overwrite failed");
snprintf(logmsg, sizeof(logmsg), "Notes %s by 'git notes %s'",
is_null_sha1(new_note) ? "removed" : "added", "add");
@@ -653,7 +664,8 @@ static int copy(int argc, const char **argv, const char *prefix)
goto out;
}
- add_note(t, object, from_note, combine_notes_overwrite);
+ if (add_note(t, object, from_note, combine_notes_overwrite))
+ die("BUG: combine_notes_overwrite failed");
commit_notes(t, "Notes added by 'git notes copy'");
out:
free_notes(t);
@@ -712,8 +724,8 @@ static int append_edit(int argc, const char **argv, const char *prefix)
if (is_null_sha1(new_note))
remove_note(t, object);
- else
- add_note(t, object, new_note, combine_notes_overwrite);
+ else if (add_note(t, object, new_note, combine_notes_overwrite))
+ die("BUG: combine_notes_overwrite failed");
snprintf(logmsg, sizeof(logmsg), "Notes %s by 'git notes %s'",
is_null_sha1(new_note) ? "removed" : "added", argv[0]);
@@ -761,6 +773,180 @@ static int show(int argc, const char **argv, const char *prefix)
return retval;
}
+static int merge_abort(struct notes_merge_options *o)
+{
+ int ret = 0;
+
+ /*
+ * Remove .git/NOTES_MERGE_PARTIAL and .git/NOTES_MERGE_REF, and call
+ * notes_merge_abort() to remove .git/NOTES_MERGE_WORKTREE.
+ */
+
+ if (delete_ref("NOTES_MERGE_PARTIAL", NULL, 0))
+ ret += error("Failed to delete ref NOTES_MERGE_PARTIAL");
+ if (delete_ref("NOTES_MERGE_REF", NULL, REF_NODEREF))
+ ret += error("Failed to delete ref NOTES_MERGE_REF");
+ if (notes_merge_abort(o))
+ ret += error("Failed to remove 'git notes merge' worktree");
+ return ret;
+}
+
+static int merge_commit(struct notes_merge_options *o)
+{
+ struct strbuf msg = STRBUF_INIT;
+ unsigned char sha1[20], parent_sha1[20];
+ struct notes_tree *t;
+ struct commit *partial;
+ struct pretty_print_context pretty_ctx;
+
+ /*
+ * Read partial merge result from .git/NOTES_MERGE_PARTIAL,
+ * and target notes ref from .git/NOTES_MERGE_REF.
+ */
+
+ if (get_sha1("NOTES_MERGE_PARTIAL", sha1))
+ die("Failed to read ref NOTES_MERGE_PARTIAL");
+ else if (!(partial = lookup_commit_reference(sha1)))
+ die("Could not find commit from NOTES_MERGE_PARTIAL.");
+ else if (parse_commit(partial))
+ die("Could not parse commit from NOTES_MERGE_PARTIAL.");
+
+ if (partial->parents)
+ hashcpy(parent_sha1, partial->parents->item->object.sha1);
+ else
+ hashclr(parent_sha1);
+
+ t = xcalloc(1, sizeof(struct notes_tree));
+ init_notes(t, "NOTES_MERGE_PARTIAL", combine_notes_overwrite, 0);
+
+ o->local_ref = resolve_ref("NOTES_MERGE_REF", sha1, 0, 0);
+ if (!o->local_ref)
+ die("Failed to resolve NOTES_MERGE_REF");
+
+ if (notes_merge_commit(o, t, partial, sha1))
+ die("Failed to finalize notes merge");
+
+ /* Reuse existing commit message in reflog message */
+ memset(&pretty_ctx, 0, sizeof(pretty_ctx));
+ format_commit_message(partial, "%s", &msg, &pretty_ctx);
+ strbuf_trim(&msg);
+ strbuf_insert(&msg, 0, "notes: ", 7);
+ update_ref(msg.buf, o->local_ref, sha1,
+ is_null_sha1(parent_sha1) ? NULL : parent_sha1,
+ 0, DIE_ON_ERR);
+
+ free_notes(t);
+ strbuf_release(&msg);
+ return merge_abort(o);
+}
+
+static int merge(int argc, const char **argv, const char *prefix)
+{
+ struct strbuf remote_ref = STRBUF_INIT, msg = STRBUF_INIT;
+ unsigned char result_sha1[20];
+ struct notes_tree *t;
+ struct notes_merge_options o;
+ int do_merge = 0, do_commit = 0, do_abort = 0;
+ int verbosity = 0, result;
+ const char *strategy = NULL;
+ struct option options[] = {
+ OPT_GROUP("General options"),
+ OPT__VERBOSITY(&verbosity),
+ OPT_GROUP("Merge options"),
+ OPT_STRING('s', "strategy", &strategy, "strategy",
+ "resolve notes conflicts using the given strategy "
+ "(manual/ours/theirs/union/cat_sort_uniq)"),
+ OPT_GROUP("Committing unmerged notes"),
+ { OPTION_BOOLEAN, 0, "commit", &do_commit, NULL,
+ "finalize notes merge by committing unmerged notes",
+ PARSE_OPT_NOARG | PARSE_OPT_NONEG },
+ OPT_GROUP("Aborting notes merge resolution"),
+ { OPTION_BOOLEAN, 0, "abort", &do_abort, NULL,
+ "abort notes merge",
+ PARSE_OPT_NOARG | PARSE_OPT_NONEG },
+ OPT_END()
+ };
+
+ argc = parse_options(argc, argv, prefix, options,
+ git_notes_merge_usage, 0);
+
+ if (strategy || do_commit + do_abort == 0)
+ do_merge = 1;
+ if (do_merge + do_commit + do_abort != 1) {
+ error("cannot mix --commit, --abort or -s/--strategy");
+ usage_with_options(git_notes_merge_usage, options);
+ }
+
+ if (do_merge && argc != 1) {
+ error("Must specify a notes ref to merge");
+ usage_with_options(git_notes_merge_usage, options);
+ } else if (!do_merge && argc) {
+ error("too many parameters");
+ usage_with_options(git_notes_merge_usage, options);
+ }
+
+ init_notes_merge_options(&o);
+ o.verbosity = verbosity + NOTES_MERGE_VERBOSITY_DEFAULT;
+
+ if (do_abort)
+ return merge_abort(&o);
+ if (do_commit)
+ return merge_commit(&o);
+
+ o.local_ref = default_notes_ref();
+ strbuf_addstr(&remote_ref, argv[0]);
+ expand_notes_ref(&remote_ref);
+ o.remote_ref = remote_ref.buf;
+
+ if (strategy) {
+ if (!strcmp(strategy, "manual"))
+ o.strategy = NOTES_MERGE_RESOLVE_MANUAL;
+ else if (!strcmp(strategy, "ours"))
+ o.strategy = NOTES_MERGE_RESOLVE_OURS;
+ else if (!strcmp(strategy, "theirs"))
+ o.strategy = NOTES_MERGE_RESOLVE_THEIRS;
+ else if (!strcmp(strategy, "union"))
+ o.strategy = NOTES_MERGE_RESOLVE_UNION;
+ else if (!strcmp(strategy, "cat_sort_uniq"))
+ o.strategy = NOTES_MERGE_RESOLVE_CAT_SORT_UNIQ;
+ else {
+ error("Unknown -s/--strategy: %s", strategy);
+ usage_with_options(git_notes_merge_usage, options);
+ }
+ }
+
+ t = init_notes_check("merge");
+
+ strbuf_addf(&msg, "notes: Merged notes from %s into %s",
+ remote_ref.buf, default_notes_ref());
+ strbuf_add(&(o.commit_msg), msg.buf + 7, msg.len - 7); /* skip "notes: " */
+
+ result = notes_merge(&o, t, result_sha1);
+
+ if (result >= 0) /* Merge resulted (trivially) in result_sha1 */
+ /* Update default notes ref with new commit */
+ update_ref(msg.buf, default_notes_ref(), result_sha1, NULL,
+ 0, DIE_ON_ERR);
+ else { /* Merge has unresolved conflicts */
+ /* Update .git/NOTES_MERGE_PARTIAL with partial merge result */
+ update_ref(msg.buf, "NOTES_MERGE_PARTIAL", result_sha1, NULL,
+ 0, DIE_ON_ERR);
+ /* Store ref-to-be-updated into .git/NOTES_MERGE_REF */
+ if (create_symref("NOTES_MERGE_REF", default_notes_ref(), NULL))
+ die("Failed to store link to current notes ref (%s)",
+ default_notes_ref());
+ printf("Automatic notes merge failed. Fix conflicts in %s and "
+ "commit the result with 'git notes merge --commit', or "
+ "abort the merge with 'git notes merge --abort'.\n",
+ git_path(NOTES_MERGE_WORKTREE));
+ }
+
+ free_notes(t);
+ strbuf_release(&remote_ref);
+ strbuf_release(&msg);
+ return result < 0; /* return non-zero on conflicts */
+}
+
static int remove_cmd(int argc, const char **argv, const char *prefix)
{
struct option options[] = {
@@ -827,6 +1013,21 @@ static int prune(int argc, const char **argv, const char *prefix)
return 0;
}
+static int get_ref(int argc, const char **argv, const char *prefix)
+{
+ struct option options[] = { OPT_END() };
+ argc = parse_options(argc, argv, prefix, options,
+ git_notes_get_ref_usage, 0);
+
+ if (argc) {
+ error("too many parameters");
+ usage_with_options(git_notes_get_ref_usage, options);
+ }
+
+ puts(default_notes_ref());
+ return 0;
+}
+
int cmd_notes(int argc, const char **argv, const char *prefix)
{
int result;
@@ -843,13 +1044,8 @@ int cmd_notes(int argc, const char **argv, const char *prefix)
if (override_notes_ref) {
struct strbuf sb = STRBUF_INIT;
- if (!prefixcmp(override_notes_ref, "refs/notes/"))
- /* we're happy */;
- else if (!prefixcmp(override_notes_ref, "notes/"))
- strbuf_addstr(&sb, "refs/");
- else
- strbuf_addstr(&sb, "refs/notes/");
strbuf_addstr(&sb, override_notes_ref);
+ expand_notes_ref(&sb);
setenv("GIT_NOTES_REF", sb.buf, 1);
strbuf_release(&sb);
}
@@ -864,10 +1060,14 @@ int cmd_notes(int argc, const char **argv, const char *prefix)
result = append_edit(argc, argv, prefix);
else if (!strcmp(argv[0], "show"))
result = show(argc, argv, prefix);
+ else if (!strcmp(argv[0], "merge"))
+ result = merge(argc, argv, prefix);
else if (!strcmp(argv[0], "remove"))
result = remove_cmd(argc, argv, prefix);
else if (!strcmp(argv[0], "prune"))
result = prune(argc, argv, prefix);
+ else if (!strcmp(argv[0], "get-ref"))
+ result = get_ref(argc, argv, prefix);
else {
result = error("Unknown subcommand: %s", argv[0]);
usage_with_options(git_notes_usage, options);