From 637666c82258a2a11424791ad83b3a43cae101a4 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Mon, 2 Jan 2017 16:26:08 +0100 Subject: [PATCH 01/38] sequencer: avoid unnecessary curly braces This was noticed while addressing Junio Hamano's concern that some "else" operators were on separate lines than the preceding closing brace. Signed-off-by: Johannes Schindelin Signed-off-by: Junio C Hamano --- sequencer.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/sequencer.c b/sequencer.c index 9adb7bbf1d..23793db08b 100644 --- a/sequencer.c +++ b/sequencer.c @@ -632,9 +632,8 @@ static int do_pick_commit(enum todo_command command, struct commit *commit, } discard_cache(); - if (!commit->parents) { + if (!commit->parents) parent = NULL; - } else if (commit->parents->next) { /* Reverting or cherry-picking a merge commit */ int cnt; From a70d8f8067640070d89d0764d0dee491f8e0bd13 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Mon, 2 Jan 2017 16:26:14 +0100 Subject: [PATCH 02/38] sequencer: move "else" keyword onto the same line as preceding brace It is the current coding style of the Git project to write if (...) { ... } else { ... } instead of putting the closing brace and the "else" keyword on separate lines. Pointed out by Junio Hamano. Signed-off-by: Johannes Schindelin Signed-off-by: Junio C Hamano --- sequencer.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/sequencer.c b/sequencer.c index 23793db08b..3eededcb98 100644 --- a/sequencer.c +++ b/sequencer.c @@ -1070,8 +1070,7 @@ static int create_seq_dir(void) error(_("a cherry-pick or revert is already in progress")); advise(_("try \"git cherry-pick (--continue | --quit | --abort)\"")); return -1; - } - else if (mkdir(git_path_seq_dir(), 0777) < 0) + } else if (mkdir(git_path_seq_dir(), 0777) < 0) return error_errno(_("could not create sequencer directory '%s'"), git_path_seq_dir()); return 0; From 23aa51420cca7bee854f54e970206c00f3be0c86 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Mon, 2 Jan 2017 16:26:20 +0100 Subject: [PATCH 03/38] sequencer: use a helper to find the commit message It is actually not safe to look for a commit message by looking for the first empty line and skipping it. The find_commit_subject() function looks more carefully, so let's use it. Since we are interested in the entire commit message, we re-compute the string length after verifying that the commit subject is not empty (in which case the entire commit message would be empty, something that should not happen but that we want to handle gracefully). Signed-off-by: Johannes Schindelin Signed-off-by: Junio C Hamano --- sequencer.c | 11 +++-------- 1 file changed, 3 insertions(+), 8 deletions(-) diff --git a/sequencer.c b/sequencer.c index 3eededcb98..720857beda 100644 --- a/sequencer.c +++ b/sequencer.c @@ -703,14 +703,9 @@ static int do_pick_commit(enum todo_command command, struct commit *commit, next = commit; next_label = msg.label; - /* - * Append the commit log message to msgbuf; it starts - * after the tree, parent, author, committer - * information followed by "\n\n". - */ - p = strstr(msg.message, "\n\n"); - if (p) - strbuf_addstr(&msgbuf, skip_blank_lines(p + 2)); + /* Append the commit log message to msgbuf. */ + if (find_commit_subject(msg.message, &p)) + strbuf_addstr(&msgbuf, p); if (opts->record_origin) { if (!has_conforming_footer(&msgbuf, NULL, 0)) From 845839575d37da825746816b24376c7799ef1105 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Mon, 2 Jan 2017 16:26:28 +0100 Subject: [PATCH 04/38] sequencer: support a new action: 'interactive rebase' This patch introduces a new action for the sequencer. It really does not do a whole lot of its own right now, but lays the ground work for patches to come. The intention, of course, is to finally make the sequencer the work horse of the interactive rebase (the original idea behind the "sequencer" concept). Signed-off-by: Johannes Schindelin Signed-off-by: Junio C Hamano --- sequencer.c | 36 ++++++++++++++++++++++++++++++++---- sequencer.h | 3 ++- 2 files changed, 34 insertions(+), 5 deletions(-) diff --git a/sequencer.c b/sequencer.c index 720857beda..690460bc67 100644 --- a/sequencer.c +++ b/sequencer.c @@ -30,6 +30,14 @@ static GIT_PATH_FUNC(git_path_opts_file, "sequencer/opts") static GIT_PATH_FUNC(git_path_head_file, "sequencer/head") static GIT_PATH_FUNC(git_path_abort_safety_file, "sequencer/abort-safety") +static GIT_PATH_FUNC(rebase_path, "rebase-merge") +/* + * The file containing rebase commands, comments, and empty lines. + * This file is created by "git rebase -i" then edited by the user. As + * the lines are processed, they are removed from the front of this + * file and written to the tail of 'done'. + */ +static GIT_PATH_FUNC(rebase_path_todo, "rebase-merge/git-rebase-todo") /* * A script to set the GIT_AUTHOR_NAME, GIT_AUTHOR_EMAIL, and * GIT_AUTHOR_DATE that will be used for the commit that is currently @@ -42,19 +50,22 @@ static GIT_PATH_FUNC(rebase_path_author_script, "rebase-merge/author-script") */ static GIT_PATH_FUNC(rebase_path_gpg_sign_opt, "rebase-merge/gpg_sign_opt") -/* We will introduce the 'interactive rebase' mode later */ static inline int is_rebase_i(const struct replay_opts *opts) { - return 0; + return opts->action == REPLAY_INTERACTIVE_REBASE; } static const char *get_dir(const struct replay_opts *opts) { + if (is_rebase_i(opts)) + return rebase_path(); return git_path_seq_dir(); } static const char *get_todo_path(const struct replay_opts *opts) { + if (is_rebase_i(opts)) + return rebase_path_todo(); return git_path_todo_file(); } @@ -122,7 +133,15 @@ int sequencer_remove_state(struct replay_opts *opts) static const char *action_name(const struct replay_opts *opts) { - return opts->action == REPLAY_REVERT ? N_("revert") : N_("cherry-pick"); + switch (opts->action) { + case REPLAY_REVERT: + return N_("revert"); + case REPLAY_PICK: + return N_("cherry-pick"); + case REPLAY_INTERACTIVE_REBASE: + return N_("rebase -i"); + } + die(_("Unknown action: %d"), opts->action); } struct commit_message { @@ -364,7 +383,9 @@ static int do_recursive_merge(struct commit *base, struct commit *next, if (active_cache_changed && write_locked_index(&the_index, &index_lock, COMMIT_LOCK)) - /* TRANSLATORS: %s will be "revert" or "cherry-pick" */ + /* TRANSLATORS: %s will be "revert", "cherry-pick" or + * "rebase -i". + */ return error(_("%s: Unable to write new index file"), _(action_name(opts))); rollback_lock_file(&index_lock); @@ -1198,6 +1219,13 @@ static int save_todo(struct todo_list *todo_list, struct replay_opts *opts) const char *todo_path = get_todo_path(opts); int next = todo_list->current, offset, fd; + /* + * rebase -i writes "git-rebase-todo" without the currently executing + * command, appending it to "done" instead. + */ + if (is_rebase_i(opts)) + next++; + fd = hold_lock_file_for_update(&todo_lock, todo_path, 0); if (fd < 0) return error_errno(_("could not lock '%s'"), todo_path); diff --git a/sequencer.h b/sequencer.h index 7a513c576b..cb21cfddee 100644 --- a/sequencer.h +++ b/sequencer.h @@ -7,7 +7,8 @@ const char *git_path_seq_dir(void); enum replay_action { REPLAY_REVERT, - REPLAY_PICK + REPLAY_PICK, + REPLAY_INTERACTIVE_REBASE }; struct replay_opts { From 25c4366782ea941baad3b09d4b9ef63996f1e3b1 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Mon, 2 Jan 2017 16:26:38 +0100 Subject: [PATCH 05/38] sequencer (rebase -i): implement the 'noop' command The 'noop' command is probably the most boring of all rebase -i commands to support in the sequencer. Which makes it an excellent candidate for this first stab to add support for rebase -i's commands to the sequencer. For the moment, let's also treat empty lines and commented-out lines as 'noop'; We will refine that handling later in this patch series. To make it easier to identify "classes" of todo_commands (such as: determine whether a command is pick-like, i.e. handles a single commit), let's enforce a certain order of said commands. Signed-off-by: Johannes Schindelin Signed-off-by: Junio C Hamano --- sequencer.c | 39 ++++++++++++++++++++++++++++++++++++--- 1 file changed, 36 insertions(+), 3 deletions(-) diff --git a/sequencer.c b/sequencer.c index 690460bc67..84f18e64e9 100644 --- a/sequencer.c +++ b/sequencer.c @@ -607,14 +607,23 @@ static int allow_empty(struct replay_opts *opts, struct commit *commit) return 1; } +/* + * Note that ordering matters in this enum. Not only must it match the mapping + * below, it is also divided into several sections that matter. When adding + * new commands, make sure you add it in the right section. + */ enum todo_command { + /* commands that handle commits */ TODO_PICK = 0, - TODO_REVERT + TODO_REVERT, + /* commands that do nothing but are counted for reporting progress */ + TODO_NOOP }; static const char *todo_command_strings[] = { "pick", - "revert" + "revert", + "noop" }; static const char *command_to_string(const enum todo_command command) @@ -624,6 +633,10 @@ static const char *command_to_string(const enum todo_command command) die("Unknown command: %d", command); } +static int is_noop(const enum todo_command command) +{ + return TODO_NOOP <= (size_t)command; +} static int do_pick_commit(enum todo_command command, struct commit *commit, struct replay_opts *opts) @@ -879,6 +892,14 @@ static int parse_insn_line(struct todo_item *item, const char *bol, char *eol) /* left-trim */ bol += strspn(bol, " \t"); + if (bol == eol || *bol == '\r' || *bol == comment_line_char) { + item->command = TODO_NOOP; + item->commit = NULL; + item->arg = bol; + item->arg_len = eol - bol; + return 0; + } + for (i = 0; i < ARRAY_SIZE(todo_command_strings); i++) if (skip_prefix(bol, todo_command_strings[i], &bol)) { item->command = i; @@ -887,6 +908,13 @@ static int parse_insn_line(struct todo_item *item, const char *bol, char *eol) if (i >= ARRAY_SIZE(todo_command_strings)) return -1; + if (item->command == TODO_NOOP) { + item->commit = NULL; + item->arg = bol; + item->arg_len = eol - bol; + return 0; + } + /* Eat up extra spaces/ tabs before object name */ padding = strspn(bol, " \t"); if (!padding) @@ -1289,7 +1317,12 @@ static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) struct todo_item *item = todo_list->items + todo_list->current; if (save_todo(todo_list, opts)) return -1; - res = do_pick_commit(item->command, item->commit, opts); + if (item->command <= TODO_REVERT) + res = do_pick_commit(item->command, item->commit, + opts); + else if (!is_noop(item->command)) + return error(_("unknown command %d"), item->command); + todo_list->current++; if (res) return res; From 56dc3ab04bf0f7bb8c73ebbba47469bdf8be8ac4 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Mon, 2 Jan 2017 16:26:43 +0100 Subject: [PATCH 06/38] sequencer (rebase -i): implement the 'edit' command This patch is a straight-forward reimplementation of the `edit` operation of the interactive rebase command. Well, not *quite* straight-forward: when stopping, the `edit` command wants to write the `patch` file (which is not only the patch, but includes the commit message and author information). To that end, this patch requires the earlier work that taught the log-tree machinery to respect the `file` setting of rev_info->diffopt to write to a file stream different than stdout. Signed-off-by: Johannes Schindelin Signed-off-by: Junio C Hamano --- sequencer.c | 117 ++++++++++++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 114 insertions(+), 3 deletions(-) diff --git a/sequencer.c b/sequencer.c index 84f18e64e9..b138a3906c 100644 --- a/sequencer.c +++ b/sequencer.c @@ -17,6 +17,7 @@ #include "argv-array.h" #include "quote.h" #include "trailer.h" +#include "log-tree.h" #define GIT_REFLOG_ACTION "GIT_REFLOG_ACTION" @@ -44,6 +45,20 @@ static GIT_PATH_FUNC(rebase_path_todo, "rebase-merge/git-rebase-todo") * being rebased. */ static GIT_PATH_FUNC(rebase_path_author_script, "rebase-merge/author-script") +/* + * When an "edit" rebase command is being processed, the SHA1 of the + * commit to be edited is recorded in this file. When "git rebase + * --continue" is executed, if there are any staged changes then they + * will be amended to the HEAD commit, but only provided the HEAD + * commit is still the commit to be edited. When any other rebase + * command is processed, this file is deleted. + */ +static GIT_PATH_FUNC(rebase_path_amend, "rebase-merge/amend") +/* + * When we stop at a given patch via the "edit" command, this file contains + * the abbreviated commit name of the corresponding patch. + */ +static GIT_PATH_FUNC(rebase_path_stopped_sha, "rebase-merge/stopped-sha") /* * The following files are written by git-rebase just after parsing the * command-line (and are only consumed, not modified, by the sequencer). @@ -616,6 +631,7 @@ enum todo_command { /* commands that handle commits */ TODO_PICK = 0, TODO_REVERT, + TODO_EDIT, /* commands that do nothing but are counted for reporting progress */ TODO_NOOP }; @@ -623,6 +639,7 @@ enum todo_command { static const char *todo_command_strings[] = { "pick", "revert", + "edit", "noop" }; @@ -1302,9 +1319,87 @@ static int save_opts(struct replay_opts *opts) return res; } +static int make_patch(struct commit *commit, struct replay_opts *opts) +{ + struct strbuf buf = STRBUF_INIT; + struct rev_info log_tree_opt; + const char *subject, *p; + int res = 0; + + p = short_commit_name(commit); + if (write_message(p, strlen(p), rebase_path_stopped_sha(), 1) < 0) + return -1; + + strbuf_addf(&buf, "%s/patch", get_dir(opts)); + memset(&log_tree_opt, 0, sizeof(log_tree_opt)); + init_revisions(&log_tree_opt, NULL); + log_tree_opt.abbrev = 0; + log_tree_opt.diff = 1; + log_tree_opt.diffopt.output_format = DIFF_FORMAT_PATCH; + log_tree_opt.disable_stdin = 1; + log_tree_opt.no_commit_id = 1; + log_tree_opt.diffopt.file = fopen(buf.buf, "w"); + log_tree_opt.diffopt.use_color = GIT_COLOR_NEVER; + if (!log_tree_opt.diffopt.file) + res |= error_errno(_("could not open '%s'"), buf.buf); + else { + res |= log_tree_commit(&log_tree_opt, commit); + fclose(log_tree_opt.diffopt.file); + } + strbuf_reset(&buf); + + strbuf_addf(&buf, "%s/message", get_dir(opts)); + if (!file_exists(buf.buf)) { + const char *commit_buffer = get_commit_buffer(commit, NULL); + find_commit_subject(commit_buffer, &subject); + res |= write_message(subject, strlen(subject), buf.buf, 1); + unuse_commit_buffer(commit, commit_buffer); + } + strbuf_release(&buf); + + return res; +} + +static int intend_to_amend(void) +{ + unsigned char head[20]; + char *p; + + if (get_sha1("HEAD", head)) + return error(_("cannot read HEAD")); + + p = sha1_to_hex(head); + return write_message(p, strlen(p), rebase_path_amend(), 1); +} + +static int error_with_patch(struct commit *commit, + const char *subject, int subject_len, + struct replay_opts *opts, int exit_code, int to_amend) +{ + if (make_patch(commit, opts)) + return -1; + + if (to_amend) { + if (intend_to_amend()) + return -1; + + fprintf(stderr, "You can amend the commit now, with\n" + "\n" + " git commit --amend %s\n" + "\n" + "Once you are satisfied with your changes, run\n" + "\n" + " git rebase --continue\n", gpg_sign_opt_quoted(opts)); + } else if (exit_code) + fprintf(stderr, "Could not apply %s... %.*s\n", + short_commit_name(commit), subject_len, subject); + + return exit_code; +} + static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) { - int res; + int res = 0; setenv(GIT_REFLOG_ACTION, action_name(opts), 0); if (opts->allow_ff) @@ -1317,10 +1412,20 @@ static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) struct todo_item *item = todo_list->items + todo_list->current; if (save_todo(todo_list, opts)) return -1; - if (item->command <= TODO_REVERT) + if (item->command <= TODO_EDIT) { res = do_pick_commit(item->command, item->commit, opts); - else if (!is_noop(item->command)) + if (item->command == TODO_EDIT) { + struct commit *commit = item->commit; + if (!res) + warning(_("stopped at %s... %.*s"), + short_commit_name(commit), + item->arg_len, item->arg); + return error_with_patch(commit, + item->arg, item->arg_len, opts, res, + !res); + } + } else if (!is_noop(item->command)) return error(_("unknown command %d"), item->command); todo_list->current++; @@ -1328,6 +1433,12 @@ static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) return res; } + if (is_rebase_i(opts)) { + /* Stopped in the middle, as planned? */ + if (todo_list->current < todo_list->nr) + return 0; + } + /* * Sequence of picks finished successfully; cleanup by * removing the .git/sequencer directory From 311af5266b27523742e8be9d8297ea475137cfb5 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Mon, 2 Jan 2017 16:26:47 +0100 Subject: [PATCH 07/38] sequencer (rebase -i): implement the 'exec' command The 'exec' command is a little special among rebase -i's commands, as it does *not* have a SHA-1 as first parameter. Instead, everything after the `exec` command is treated as command-line to execute. Let's reuse the arg/arg_len fields of the todo_item structure (which hold the oneline for pick/edit commands) to point to the command-line. Signed-off-by: Johannes Schindelin Signed-off-by: Junio C Hamano --- sequencer.c | 57 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 57 insertions(+) diff --git a/sequencer.c b/sequencer.c index b138a3906c..e9c10d7fe5 100644 --- a/sequencer.c +++ b/sequencer.c @@ -18,6 +18,7 @@ #include "quote.h" #include "trailer.h" #include "log-tree.h" +#include "wt-status.h" #define GIT_REFLOG_ACTION "GIT_REFLOG_ACTION" @@ -632,6 +633,8 @@ enum todo_command { TODO_PICK = 0, TODO_REVERT, TODO_EDIT, + /* commands that do something else than handling a single commit */ + TODO_EXEC, /* commands that do nothing but are counted for reporting progress */ TODO_NOOP }; @@ -640,6 +643,7 @@ static const char *todo_command_strings[] = { "pick", "revert", "edit", + "exec", "noop" }; @@ -938,6 +942,12 @@ static int parse_insn_line(struct todo_item *item, const char *bol, char *eol) return -1; bol += padding; + if (item->command == TODO_EXEC) { + item->arg = bol; + item->arg_len = (int)(eol - bol); + return 0; + } + end_of_object_name = (char *) bol + strcspn(bol, " \t\n"); saved = *end_of_object_name; *end_of_object_name = '\0'; @@ -1397,6 +1407,46 @@ static int error_with_patch(struct commit *commit, return exit_code; } +static int do_exec(const char *command_line) +{ + const char *child_argv[] = { NULL, NULL }; + int dirty, status; + + fprintf(stderr, "Executing: %s\n", command_line); + child_argv[0] = command_line; + status = run_command_v_opt(child_argv, RUN_USING_SHELL); + + /* force re-reading of the cache */ + if (discard_cache() < 0 || read_cache() < 0) + return error(_("could not read index")); + + dirty = require_clean_work_tree("rebase", NULL, 1, 1); + + if (status) { + warning(_("execution failed: %s\n%s" + "You can fix the problem, and then run\n" + "\n" + " git rebase --continue\n" + "\n"), + command_line, + dirty ? N_("and made changes to the index and/or the " + "working tree\n") : ""); + if (status == 127) + /* command not found */ + status = 1; + } else if (dirty) { + warning(_("execution succeeded: %s\nbut " + "left changes to the index and/or the working tree\n" + "Commit or stash your changes, and then run\n" + "\n" + " git rebase --continue\n" + "\n"), command_line); + status = 1; + } + + return status; +} + static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) { int res = 0; @@ -1425,6 +1475,13 @@ static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) item->arg, item->arg_len, opts, res, !res); } + } else if (item->command == TODO_EXEC) { + char *end_of_arg = (char *)(item->arg + item->arg_len); + int saved = *end_of_arg; + + *end_of_arg = '\0'; + res = do_exec(item->arg); + *end_of_arg = saved; } else if (!is_noop(item->command)) return error(_("unknown command %d"), item->command); From 556907f1e1057292e5cfc1f14e68167b43ff4761 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Mon, 2 Jan 2017 16:26:53 +0100 Subject: [PATCH 08/38] sequencer (rebase -i): learn about the 'verbose' mode When calling `git rebase -i -v`, the user wants to see some statistics after the commits were rebased. Let's show some. The strbuf we use to perform that task will be used for other things in subsequent commits, hence it is declared and initialized in a wider scope than strictly needed here. Signed-off-by: Johannes Schindelin Signed-off-by: Junio C Hamano --- sequencer.c | 28 ++++++++++++++++++++++++++++ sequencer.h | 1 + 2 files changed, 29 insertions(+) diff --git a/sequencer.c b/sequencer.c index e9c10d7fe5..ddc4d144d7 100644 --- a/sequencer.c +++ b/sequencer.c @@ -65,6 +65,8 @@ static GIT_PATH_FUNC(rebase_path_stopped_sha, "rebase-merge/stopped-sha") * command-line (and are only consumed, not modified, by the sequencer). */ static GIT_PATH_FUNC(rebase_path_gpg_sign_opt, "rebase-merge/gpg_sign_opt") +static GIT_PATH_FUNC(rebase_path_orig_head, "rebase-merge/orig-head") +static GIT_PATH_FUNC(rebase_path_verbose, "rebase-merge/verbose") static inline int is_rebase_i(const struct replay_opts *opts) { @@ -1088,6 +1090,9 @@ static int read_populate_opts(struct replay_opts *opts) } strbuf_release(&buf); + if (file_exists(rebase_path_verbose())) + opts->verbose = 1; + return 0; } @@ -1491,9 +1496,32 @@ static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) } if (is_rebase_i(opts)) { + struct strbuf buf = STRBUF_INIT; + /* Stopped in the middle, as planned? */ if (todo_list->current < todo_list->nr) return 0; + + if (opts->verbose) { + struct rev_info log_tree_opt; + struct object_id orig, head; + + memset(&log_tree_opt, 0, sizeof(log_tree_opt)); + init_revisions(&log_tree_opt, NULL); + log_tree_opt.diff = 1; + log_tree_opt.diffopt.output_format = + DIFF_FORMAT_DIFFSTAT; + log_tree_opt.disable_stdin = 1; + + if (read_oneliner(&buf, rebase_path_orig_head(), 0) && + !get_sha1(buf.buf, orig.hash) && + !get_sha1("HEAD", head.hash)) { + diff_tree_sha1(orig.hash, head.hash, + "", &log_tree_opt.diffopt); + log_tree_diff_flush(&log_tree_opt); + } + } + strbuf_release(&buf); } /* diff --git a/sequencer.h b/sequencer.h index cb21cfddee..f885b68395 100644 --- a/sequencer.h +++ b/sequencer.h @@ -24,6 +24,7 @@ struct replay_opts { int allow_empty; int allow_empty_message; int keep_redundant_commits; + int verbose; int mainline; From 1df6df0c18d068a80010e137b5f1d1dcc2bda600 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Mon, 2 Jan 2017 16:27:00 +0100 Subject: [PATCH 09/38] sequencer (rebase -i): write the 'done' file In the interactive rebase, commands that were successfully processed are not simply discarded, but appended to the 'done' file instead. This is used e.g. to display the current state to the user in the output of `git status` or the progress. Signed-off-by: Johannes Schindelin Signed-off-by: Junio C Hamano --- sequencer.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/sequencer.c b/sequencer.c index ddc4d144d7..8ea3d6aa94 100644 --- a/sequencer.c +++ b/sequencer.c @@ -40,6 +40,12 @@ static GIT_PATH_FUNC(rebase_path, "rebase-merge") * file and written to the tail of 'done'. */ static GIT_PATH_FUNC(rebase_path_todo, "rebase-merge/git-rebase-todo") +/* + * The rebase command lines that have already been processed. A line + * is moved here when it is first handled, before any associated user + * actions. + */ +static GIT_PATH_FUNC(rebase_path_done, "rebase-merge/done") /* * A script to set the GIT_AUTHOR_NAME, GIT_AUTHOR_EMAIL, and * GIT_AUTHOR_DATE that will be used for the commit that is currently @@ -1296,6 +1302,23 @@ static int save_todo(struct todo_list *todo_list, struct replay_opts *opts) return error_errno(_("could not write to '%s'"), todo_path); if (commit_lock_file(&todo_lock) < 0) return error(_("failed to finalize '%s'."), todo_path); + + if (is_rebase_i(opts)) { + const char *done_path = rebase_path_done(); + int fd = open(done_path, O_CREAT | O_WRONLY | O_APPEND, 0666); + int prev_offset = !next ? 0 : + todo_list->items[next - 1].offset_in_buf; + + if (fd >= 0 && offset > prev_offset && + write_in_full(fd, todo_list->buf.buf + prev_offset, + offset - prev_offset) < 0) { + close(fd); + return error_errno(_("could not write to '%s'"), + done_path); + } + if (fd >= 0) + close(fd); + } return 0; } From 6e98de72c03a5bad5ecab1e328e91ef329ba1f41 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Mon, 2 Jan 2017 16:27:07 +0100 Subject: [PATCH 10/38] sequencer (rebase -i): add support for the 'fixup' and 'squash' commands This is a huge patch, and at the same time a huge step forward to execute the performance-critical parts of the interactive rebase in a builtin command. Since 'fixup' and 'squash' are not only similar, but also need to know about each other (we want to reduce a series of fixups/squashes into a single, final commit message edit, from the user's point of view), we really have to implement them both at the same time. Most of the actual work is done by the existing code path that already handles the "pick" and the "edit" commands; We added support for other features (e.g. to amend the commit message) in the patches leading up to this one, yet there are still quite a few bits in this patch that simply would not make sense as individual patches (such as: determining whether there was anything to "fix up" in the "todo" script, etc). In theory, it would be possible to reuse the fast-forward code path also for the fixup and the squash code paths, but in practice this would make the code less readable. The end result cannot be fast-forwarded anyway, therefore let's just extend the cherry-picking code path for now. Since the sequencer parses the entire `git-rebase-todo` script in one go, fixup or squash commands without a preceding pick can be reported early (in git-rebase--interactive, we could only report such errors just before executing the fixup/squash). Signed-off-by: Johannes Schindelin Signed-off-by: Junio C Hamano --- sequencer.c | 229 +++++++++++++++++++++++++++++++++++++++++++++++++--- 1 file changed, 218 insertions(+), 11 deletions(-) diff --git a/sequencer.c b/sequencer.c index 8ea3d6aa94..6a939a10bd 100644 --- a/sequencer.c +++ b/sequencer.c @@ -46,6 +46,35 @@ static GIT_PATH_FUNC(rebase_path_todo, "rebase-merge/git-rebase-todo") * actions. */ static GIT_PATH_FUNC(rebase_path_done, "rebase-merge/done") +/* + * The commit message that is planned to be used for any changes that + * need to be committed following a user interaction. + */ +static GIT_PATH_FUNC(rebase_path_message, "rebase-merge/message") +/* + * The file into which is accumulated the suggested commit message for + * squash/fixup commands. When the first of a series of squash/fixups + * is seen, the file is created and the commit message from the + * previous commit and from the first squash/fixup commit are written + * to it. The commit message for each subsequent squash/fixup commit + * is appended to the file as it is processed. + * + * The first line of the file is of the form + * # This is a combination of $count commits. + * where $count is the number of commits whose messages have been + * written to the file so far (including the initial "pick" commit). + * Each time that a commit message is processed, this line is read and + * updated. It is deleted just before the combined commit is made. + */ +static GIT_PATH_FUNC(rebase_path_squash_msg, "rebase-merge/message-squash") +/* + * If the current series of squash/fixups has not yet included a squash + * command, then this file exists and holds the commit message of the + * original "pick" commit. (If the series ends without a "squash" + * command, then this can be used as the commit message of the combined + * commit without opening the editor.) + */ +static GIT_PATH_FUNC(rebase_path_fixup_msg, "rebase-merge/message-fixup") /* * A script to set the GIT_AUTHOR_NAME, GIT_AUTHOR_EMAIL, and * GIT_AUTHOR_DATE that will be used for the commit that is currently @@ -641,6 +670,8 @@ enum todo_command { TODO_PICK = 0, TODO_REVERT, TODO_EDIT, + TODO_FIXUP, + TODO_SQUASH, /* commands that do something else than handling a single commit */ TODO_EXEC, /* commands that do nothing but are counted for reporting progress */ @@ -651,6 +682,8 @@ static const char *todo_command_strings[] = { "pick", "revert", "edit", + "fixup", + "squash", "exec", "noop" }; @@ -667,15 +700,114 @@ static int is_noop(const enum todo_command command) return TODO_NOOP <= (size_t)command; } -static int do_pick_commit(enum todo_command command, struct commit *commit, - struct replay_opts *opts) +static int is_fixup(enum todo_command command) { + return command == TODO_FIXUP || command == TODO_SQUASH; +} + +static int update_squash_messages(enum todo_command command, + struct commit *commit, struct replay_opts *opts) +{ + struct strbuf buf = STRBUF_INIT; + int count, res; + const char *message, *body; + + if (file_exists(rebase_path_squash_msg())) { + struct strbuf header = STRBUF_INIT; + char *eol, *p; + + if (strbuf_read_file(&buf, rebase_path_squash_msg(), 2048) <= 0) + return error(_("could not read '%s'"), + rebase_path_squash_msg()); + + p = buf.buf + 1; + eol = strchrnul(buf.buf, '\n'); + if (buf.buf[0] != comment_line_char || + (p += strcspn(p, "0123456789\n")) == eol) + return error(_("unexpected 1st line of squash message:" + "\n\n\t%.*s"), + (int)(eol - buf.buf), buf.buf); + count = strtol(p, NULL, 10); + + if (count < 1) + return error(_("invalid 1st line of squash message:\n" + "\n\t%.*s"), + (int)(eol - buf.buf), buf.buf); + + strbuf_addf(&header, "%c ", comment_line_char); + strbuf_addf(&header, + _("This is a combination of %d commits."), ++count); + strbuf_splice(&buf, 0, eol - buf.buf, header.buf, header.len); + strbuf_release(&header); + } else { + unsigned char head[20]; + struct commit *head_commit; + const char *head_message, *body; + + if (get_sha1("HEAD", head)) + return error(_("need a HEAD to fixup")); + if (!(head_commit = lookup_commit_reference(head))) + return error(_("could not read HEAD")); + if (!(head_message = get_commit_buffer(head_commit, NULL))) + return error(_("could not read HEAD's commit message")); + + find_commit_subject(head_message, &body); + if (write_message(body, strlen(body), + rebase_path_fixup_msg(), 0)) { + unuse_commit_buffer(head_commit, head_message); + return error(_("cannot write '%s'"), + rebase_path_fixup_msg()); + } + + count = 2; + strbuf_addf(&buf, "%c ", comment_line_char); + strbuf_addf(&buf, _("This is a combination of %d commits."), + count); + strbuf_addf(&buf, "\n%c ", comment_line_char); + strbuf_addstr(&buf, _("This is the 1st commit message:")); + strbuf_addstr(&buf, "\n\n"); + strbuf_addstr(&buf, body); + + unuse_commit_buffer(head_commit, head_message); + } + + if (!(message = get_commit_buffer(commit, NULL))) + return error(_("could not read commit message of %s"), + oid_to_hex(&commit->object.oid)); + find_commit_subject(message, &body); + + if (command == TODO_SQUASH) { + unlink(rebase_path_fixup_msg()); + strbuf_addf(&buf, "\n%c ", comment_line_char); + strbuf_addf(&buf, _("This is the commit message #%d:"), count); + strbuf_addstr(&buf, "\n\n"); + strbuf_addstr(&buf, body); + } else if (command == TODO_FIXUP) { + strbuf_addf(&buf, "\n%c ", comment_line_char); + strbuf_addf(&buf, _("The commit message #%d will be skipped:"), + count); + strbuf_addstr(&buf, "\n\n"); + strbuf_add_commented_lines(&buf, body, strlen(body)); + } else + return error(_("unknown command: %d"), command); + unuse_commit_buffer(commit, message); + + res = write_message(buf.buf, buf.len, rebase_path_squash_msg(), 0); + strbuf_release(&buf); + return res; +} + +static int do_pick_commit(enum todo_command command, struct commit *commit, + struct replay_opts *opts, int final_fixup) +{ + int edit = opts->edit, cleanup_commit_message = 0; + const char *msg_file = edit ? NULL : git_path_merge_msg(); unsigned char head[20]; struct commit *base, *next, *parent; const char *base_label, *next_label; struct commit_message msg = { NULL, NULL, NULL, NULL }; struct strbuf msgbuf = STRBUF_INIT; - int res, unborn = 0, allow; + int res, unborn = 0, amend = 0, allow; if (opts->no_commit) { /* @@ -720,7 +852,7 @@ static int do_pick_commit(enum todo_command command, struct commit *commit, else parent = commit->parents->item; - if (opts->allow_ff && + if (opts->allow_ff && !is_fixup(command) && ((parent && !hashcmp(parent->object.oid.hash, head)) || (!parent && unborn))) return fast_forward_to(commit->object.oid.hash, head, unborn, opts); @@ -779,6 +911,27 @@ static int do_pick_commit(enum todo_command command, struct commit *commit, } } + if (is_fixup(command)) { + if (update_squash_messages(command, commit, opts)) + return -1; + amend = 1; + if (!final_fixup) + msg_file = rebase_path_squash_msg(); + else if (file_exists(rebase_path_fixup_msg())) { + cleanup_commit_message = 1; + msg_file = rebase_path_fixup_msg(); + } else { + const char *dest = git_path("SQUASH_MSG"); + unlink(dest); + if (copy_file(dest, rebase_path_squash_msg(), 0666)) + return error(_("could not rename '%s' to '%s'"), + rebase_path_squash_msg(), dest); + unlink(git_path("MERGE_MSG")); + msg_file = dest; + edit = 1; + } + } + if (!opts->strategy || !strcmp(opts->strategy, "recursive") || command == TODO_REVERT) { res = do_recursive_merge(base, next, base_label, next_label, head, &msgbuf, opts); @@ -834,8 +987,13 @@ static int do_pick_commit(enum todo_command command, struct commit *commit, goto leave; } if (!opts->no_commit) - res = run_git_commit(opts->edit ? NULL : git_path_merge_msg(), - opts, allow, opts->edit, 0, 0); + res = run_git_commit(msg_file, opts, allow, edit, amend, + cleanup_commit_message); + + if (!res && final_fixup) { + unlink(rebase_path_fixup_msg()); + unlink(rebase_path_squash_msg()); + } leave: free_message(commit, &msg); @@ -976,7 +1134,7 @@ static int parse_insn_buffer(char *buf, struct todo_list *todo_list) { struct todo_item *item; char *p = buf, *next_p; - int i, res = 0; + int i, res = 0, fixup_okay = file_exists(rebase_path_done()); for (i = 1; *p; i++, p = next_p) { char *eol = strchrnul(p, '\n'); @@ -991,8 +1149,16 @@ static int parse_insn_buffer(char *buf, struct todo_list *todo_list) if (parse_insn_line(item, p, eol)) { res = error(_("invalid line %d: %.*s"), i, (int)(eol - p), p); - item->command = -1; + item->command = TODO_NOOP; } + + if (fixup_okay) + ; /* do nothing */ + else if (is_fixup(item->command)) + return error(_("cannot '%s' without a previous commit"), + command_to_string(item->command)); + else if (!is_noop(item->command)) + fixup_okay = 1; } if (!todo_list->nr) return error(_("no commits parsed.")); @@ -1435,6 +1601,20 @@ static int error_with_patch(struct commit *commit, return exit_code; } +static int error_failed_squash(struct commit *commit, + struct replay_opts *opts, int subject_len, const char *subject) +{ + if (rename(rebase_path_squash_msg(), rebase_path_message())) + return error(_("could not rename '%s' to '%s'"), + rebase_path_squash_msg(), rebase_path_message()); + unlink(rebase_path_fixup_msg()); + unlink(git_path("MERGE_MSG")); + if (copy_file(git_path("MERGE_MSG"), rebase_path_message(), 0666)) + return error(_("could not copy '%s' to '%s'"), + rebase_path_message(), git_path("MERGE_MSG")); + return error_with_patch(commit, subject, subject_len, opts, 1, 0); +} + static int do_exec(const char *command_line) { const char *child_argv[] = { NULL, NULL }; @@ -1475,6 +1655,21 @@ static int do_exec(const char *command_line) return status; } +static int is_final_fixup(struct todo_list *todo_list) +{ + int i = todo_list->current; + + if (!is_fixup(todo_list->items[i].command)) + return 0; + + while (++i < todo_list->nr) + if (is_fixup(todo_list->items[i].command)) + return 0; + else if (!is_noop(todo_list->items[i].command)) + break; + return 1; +} + static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) { int res = 0; @@ -1490,9 +1685,15 @@ static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) struct todo_item *item = todo_list->items + todo_list->current; if (save_todo(todo_list, opts)) return -1; - if (item->command <= TODO_EDIT) { + if (is_rebase_i(opts)) { + unlink(rebase_path_message()); + unlink(rebase_path_author_script()); + unlink(rebase_path_stopped_sha()); + unlink(rebase_path_amend()); + } + if (item->command <= TODO_SQUASH) { res = do_pick_commit(item->command, item->commit, - opts); + opts, is_final_fixup(todo_list)); if (item->command == TODO_EDIT) { struct commit *commit = item->commit; if (!res) @@ -1503,6 +1704,12 @@ static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) item->arg, item->arg_len, opts, res, !res); } + if (res && is_fixup(item->command)) { + if (res == 1) + intend_to_amend(); + return error_failed_squash(item->commit, opts, + item->arg_len, item->arg); + } } else if (item->command == TODO_EXEC) { char *end_of_arg = (char *)(item->arg + item->arg_len); int saved = *end_of_arg; @@ -1601,7 +1808,7 @@ static int single_pick(struct commit *cmit, struct replay_opts *opts) { setenv(GIT_REFLOG_ACTION, action_name(opts), 0); return do_pick_commit(opts->action == REPLAY_PICK ? - TODO_PICK : TODO_REVERT, cmit, opts); + TODO_PICK : TODO_REVERT, cmit, opts, 0); } int sequencer_pick_revisions(struct replay_opts *opts) From 414697a9d82079851a4623b01d6b3a125919d026 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Mon, 2 Jan 2017 16:27:15 +0100 Subject: [PATCH 11/38] sequencer (rebase -i): implement the short commands For users' convenience, most rebase commands can be abbreviated, e.g. 'p' instead of 'pick' and 'x' instead of 'exec'. Let's teach the sequencer to handle those abbreviated commands just fine. Signed-off-by: Johannes Schindelin Signed-off-by: Junio C Hamano --- sequencer.c | 35 +++++++++++++++++++++-------------- 1 file changed, 21 insertions(+), 14 deletions(-) diff --git a/sequencer.c b/sequencer.c index 6a939a10bd..29b944d724 100644 --- a/sequencer.c +++ b/sequencer.c @@ -678,20 +678,23 @@ enum todo_command { TODO_NOOP }; -static const char *todo_command_strings[] = { - "pick", - "revert", - "edit", - "fixup", - "squash", - "exec", - "noop" +static struct { + char c; + const char *str; +} todo_command_info[] = { + { 'p', "pick" }, + { 0, "revert" }, + { 'e', "edit" }, + { 'f', "fixup" }, + { 's', "squash" }, + { 'x', "exec" }, + { 0, "noop" } }; static const char *command_to_string(const enum todo_command command) { - if ((size_t)command < ARRAY_SIZE(todo_command_strings)) - return todo_command_strings[command]; + if ((size_t)command < ARRAY_SIZE(todo_command_info)) + return todo_command_info[command].str; die("Unknown command: %d", command); } @@ -1087,12 +1090,16 @@ static int parse_insn_line(struct todo_item *item, const char *bol, char *eol) return 0; } - for (i = 0; i < ARRAY_SIZE(todo_command_strings); i++) - if (skip_prefix(bol, todo_command_strings[i], &bol)) { + for (i = 0; i < ARRAY_SIZE(todo_command_info); i++) + if (skip_prefix(bol, todo_command_info[i].str, &bol)) { + item->command = i; + break; + } else if (bol[1] == ' ' && *bol == todo_command_info[i].c) { + bol++; item->command = i; break; } - if (i >= ARRAY_SIZE(todo_command_strings)) + if (i >= ARRAY_SIZE(todo_command_info)) return -1; if (item->command == TODO_NOOP) { @@ -1287,7 +1294,7 @@ static int walk_revs_populate_todo(struct todo_list *todo_list, { enum todo_command command = opts->action == REPLAY_PICK ? TODO_PICK : TODO_REVERT; - const char *command_string = todo_command_strings[command]; + const char *command_string = todo_command_info[command].str; struct commit *commit; if (prepare_revs(opts)) From 0473f28ad700b9bf4e7dd279f33950fdc968dfa2 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Mon, 2 Jan 2017 16:27:18 +0100 Subject: [PATCH 12/38] sequencer (rebase -i): write an author-script file When the interactive rebase aborts, it writes out an author-script file to record the author information for the current commit. As we are about to teach the sequencer how to perform the actions behind an interactive rebase, it needs to write those author-script files, too. Signed-off-by: Johannes Schindelin Signed-off-by: Junio C Hamano --- sequencer.c | 50 +++++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 49 insertions(+), 1 deletion(-) diff --git a/sequencer.c b/sequencer.c index 29b944d724..9913882603 100644 --- a/sequencer.c +++ b/sequencer.c @@ -483,6 +483,52 @@ static int is_index_unchanged(void) return !hashcmp(active_cache_tree->sha1, head_commit->tree->object.oid.hash); } +static int write_author_script(const char *message) +{ + struct strbuf buf = STRBUF_INIT; + const char *eol; + int res; + + for (;;) + if (!*message || starts_with(message, "\n")) { +missing_author: + /* Missing 'author' line? */ + unlink(rebase_path_author_script()); + return 0; + } else if (skip_prefix(message, "author ", &message)) + break; + else if ((eol = strchr(message, '\n'))) + message = eol + 1; + else + goto missing_author; + + strbuf_addstr(&buf, "GIT_AUTHOR_NAME='"); + while (*message && *message != '\n' && *message != '\r') + if (skip_prefix(message, " <", &message)) + break; + else if (*message != '\'') + strbuf_addch(&buf, *(message++)); + else + strbuf_addf(&buf, "'\\\\%c'", *(message++)); + strbuf_addstr(&buf, "'\nGIT_AUTHOR_EMAIL='"); + while (*message && *message != '\n' && *message != '\r') + if (skip_prefix(message, "> ", &message)) + break; + else if (*message != '\'') + strbuf_addch(&buf, *(message++)); + else + strbuf_addf(&buf, "'\\\\%c'", *(message++)); + strbuf_addstr(&buf, "'\nGIT_AUTHOR_DATE='@"); + while (*message && *message != '\n' && *message != '\r') + if (*message != '\'') + strbuf_addch(&buf, *(message++)); + else + strbuf_addf(&buf, "'\\\\%c'", *(message++)); + res = write_message(buf.buf, buf.len, rebase_path_author_script(), 1); + strbuf_release(&buf); + return res; +} + /* * Read the author-script file into an environment block, ready for use in * run_command(), that can be free()d afterwards. @@ -935,7 +981,9 @@ static int do_pick_commit(enum todo_command command, struct commit *commit, } } - if (!opts->strategy || !strcmp(opts->strategy, "recursive") || command == TODO_REVERT) { + if (is_rebase_i(opts) && write_author_script(msg.message) < 0) + res = -1; + else if (!opts->strategy || !strcmp(opts->strategy, "recursive") || command == TODO_REVERT) { res = do_recursive_merge(base, next, base_label, next_label, head, &msgbuf, opts); if (res < 0) From 9d93ccd1d2d2d40a3c7ecc76740caf28683144ac Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Mon, 2 Jan 2017 16:27:21 +0100 Subject: [PATCH 13/38] sequencer (rebase -i): allow continuing with staged changes When an interactive rebase is interrupted, the user may stage changes before continuing, and we need to commit those changes in that case. Please note that the nested "if" added to the sequencer_continue() is not combined into a single "if" because it will be extended with an "else" clause in a later patch in this patch series. Signed-off-by: Johannes Schindelin Signed-off-by: Junio C Hamano --- sequencer.c | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) diff --git a/sequencer.c b/sequencer.c index 9913882603..69301fecc6 100644 --- a/sequencer.c +++ b/sequencer.c @@ -1826,6 +1826,42 @@ static int continue_single_pick(void) return run_command_v_opt(argv, RUN_GIT_CMD); } +static int commit_staged_changes(struct replay_opts *opts) +{ + int amend = 0; + + if (has_unstaged_changes(1)) + return error(_("cannot rebase: You have unstaged changes.")); + if (!has_uncommitted_changes(0)) + return 0; + + if (file_exists(rebase_path_amend())) { + struct strbuf rev = STRBUF_INIT; + unsigned char head[20], to_amend[20]; + + if (get_sha1("HEAD", head)) + return error(_("cannot amend non-existing commit")); + if (!read_oneliner(&rev, rebase_path_amend(), 0)) + return error(_("invalid file: '%s'"), rebase_path_amend()); + if (get_sha1_hex(rev.buf, to_amend)) + return error(_("invalid contents: '%s'"), + rebase_path_amend()); + if (hashcmp(head, to_amend)) + return error(_("\nYou have uncommitted changes in your " + "working tree. Please, commit them\n" + "first and then run 'git rebase " + "--continue' again.")); + + strbuf_release(&rev); + amend = 1; + } + + if (run_git_commit(rebase_path_message(), opts, 1, 1, amend, 0)) + return error(_("could not commit staged changes.")); + unlink(rebase_path_amend()); + return 0; +} + int sequencer_continue(struct replay_opts *opts) { struct todo_list todo_list = TODO_LIST_INIT; @@ -1834,6 +1870,10 @@ int sequencer_continue(struct replay_opts *opts) if (read_and_refresh_cache(opts)) return -1; + if (is_rebase_i(opts)) { + if (commit_staged_changes(opts)) + return -1; + } if (!file_exists(get_todo_path(opts))) return continue_single_pick(); if (read_populate_opts(opts)) From 5263220967209c7a64c065054fb64036815ac2ee Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Mon, 2 Jan 2017 16:27:25 +0100 Subject: [PATCH 14/38] sequencer (rebase -i): remove CHERRY_PICK_HEAD when no longer needed The scripted version of the interactive rebase already does that. Signed-off-by: Johannes Schindelin Signed-off-by: Junio C Hamano --- sequencer.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/sequencer.c b/sequencer.c index 69301fecc6..52e17c8887 100644 --- a/sequencer.c +++ b/sequencer.c @@ -1832,8 +1832,13 @@ static int commit_staged_changes(struct replay_opts *opts) if (has_unstaged_changes(1)) return error(_("cannot rebase: You have unstaged changes.")); - if (!has_uncommitted_changes(0)) + if (!has_uncommitted_changes(0)) { + const char *cherry_pick_head = git_path("CHERRY_PICK_HEAD"); + + if (file_exists(cherry_pick_head) && unlink(cherry_pick_head)) + return error(_("could not remove CHERRY_PICK_HEAD")); return 0; + } if (file_exists(rebase_path_amend())) { struct strbuf rev = STRBUF_INIT; From 4258a6da90988439af1d6008a3172d25efcbf2a1 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Mon, 2 Jan 2017 16:27:30 +0100 Subject: [PATCH 15/38] sequencer (rebase -i): skip some revert/cherry-pick specific code path When a cherry-pick continues without a "todo script", the intention is simply to pick a single commit. However, when an interactive rebase is continued without a "todo script", it means that the last command has been completed and that we now need to clean up. This commit guards the revert/cherry-pick specific steps so that they are not executed in rebase -i mode. Signed-off-by: Johannes Schindelin Signed-off-by: Junio C Hamano --- sequencer.c | 26 ++++++++++++++------------ 1 file changed, 14 insertions(+), 12 deletions(-) diff --git a/sequencer.c b/sequencer.c index 52e17c8887..a7b9ee0d04 100644 --- a/sequencer.c +++ b/sequencer.c @@ -1878,26 +1878,28 @@ int sequencer_continue(struct replay_opts *opts) if (is_rebase_i(opts)) { if (commit_staged_changes(opts)) return -1; - } - if (!file_exists(get_todo_path(opts))) + } else if (!file_exists(get_todo_path(opts))) return continue_single_pick(); if (read_populate_opts(opts)) return -1; if ((res = read_populate_todo(&todo_list, opts))) goto release_todo_list; - /* Verify that the conflict has been resolved */ - if (file_exists(git_path_cherry_pick_head()) || - file_exists(git_path_revert_head())) { - res = continue_single_pick(); - if (res) + if (!is_rebase_i(opts)) { + /* Verify that the conflict has been resolved */ + if (file_exists(git_path_cherry_pick_head()) || + file_exists(git_path_revert_head())) { + res = continue_single_pick(); + if (res) + goto release_todo_list; + } + if (index_differs_from("HEAD", 0, 0)) { + res = error_dirty_index(opts); goto release_todo_list; + } + todo_list.current++; } - if (index_differs_from("HEAD", 0, 0)) { - res = error_dirty_index(opts); - goto release_todo_list; - } - todo_list.current++; + res = pick_commits(&todo_list, opts); release_todo_list: todo_list_release(&todo_list); From 52865279ee1187a0f630779d2015587ae702b1f4 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Mon, 2 Jan 2017 16:27:34 +0100 Subject: [PATCH 16/38] sequencer (rebase -i): the todo can be empty when continuing When the last command of an interactive rebase fails, the user needs to resolve the problem and then continue the interactive rebase. Naturally, the todo script is empty by then. So let's not complain about that! To that end, let's move that test out of the function that parses the todo script, and into the more high-level function read_populate_todo(). This is also necessary by now because the lower-level parse_insn_buffer() has no idea whether we are performing an interactive rebase or not. Signed-off-by: Johannes Schindelin Signed-off-by: Junio C Hamano --- sequencer.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/sequencer.c b/sequencer.c index a7b9ee0d04..6a840216b1 100644 --- a/sequencer.c +++ b/sequencer.c @@ -1215,8 +1215,7 @@ static int parse_insn_buffer(char *buf, struct todo_list *todo_list) else if (!is_noop(item->command)) fixup_okay = 1; } - if (!todo_list->nr) - return error(_("no commits parsed.")); + return res; } @@ -1240,6 +1239,10 @@ static int read_populate_todo(struct todo_list *todo_list, if (res) return error(_("unusable instruction sheet: '%s'"), todo_file); + if (!todo_list->nr && + (!is_rebase_i(opts) || !file_exists(rebase_path_done()))) + return error(_("no commits parsed.")); + if (!is_rebase_i(opts)) { enum todo_command valid = opts->action == REPLAY_PICK ? TODO_PICK : TODO_REVERT; From 4b83ce9f6772451d4582dc1f0891790acbdf4eb1 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Mon, 2 Jan 2017 16:27:53 +0100 Subject: [PATCH 17/38] sequencer (rebase -i): update refs after a successful rebase An interactive rebase operates on a detached HEAD (to keep the reflog of the original branch relatively clean), and updates the branch only at the end. Now that the sequencer learns to perform interactive rebases, it also needs to learn the trick to update the branch before removing the directory containing the state of the interactive rebase. We introduce a new head_ref variable in a wider scope than necessary at the moment, to allow for a later patch that prints out "Successfully rebased and updated ". Signed-off-by: Johannes Schindelin Signed-off-by: Junio C Hamano --- sequencer.c | 46 +++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 45 insertions(+), 1 deletion(-) diff --git a/sequencer.c b/sequencer.c index 6a840216b1..80b2b2a975 100644 --- a/sequencer.c +++ b/sequencer.c @@ -102,6 +102,8 @@ static GIT_PATH_FUNC(rebase_path_stopped_sha, "rebase-merge/stopped-sha") static GIT_PATH_FUNC(rebase_path_gpg_sign_opt, "rebase-merge/gpg_sign_opt") static GIT_PATH_FUNC(rebase_path_orig_head, "rebase-merge/orig-head") static GIT_PATH_FUNC(rebase_path_verbose, "rebase-merge/verbose") +static GIT_PATH_FUNC(rebase_path_head_name, "rebase-merge/head-name") +static GIT_PATH_FUNC(rebase_path_onto, "rebase-merge/onto") static inline int is_rebase_i(const struct replay_opts *opts) { @@ -1784,12 +1786,53 @@ static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) } if (is_rebase_i(opts)) { - struct strbuf buf = STRBUF_INIT; + struct strbuf head_ref = STRBUF_INIT, buf = STRBUF_INIT; /* Stopped in the middle, as planned? */ if (todo_list->current < todo_list->nr) return 0; + if (read_oneliner(&head_ref, rebase_path_head_name(), 0) && + starts_with(head_ref.buf, "refs/")) { + unsigned char head[20], orig[20]; + int res; + + if (get_sha1("HEAD", head)) { + res = error(_("cannot read HEAD")); +cleanup_head_ref: + strbuf_release(&head_ref); + strbuf_release(&buf); + return res; + } + if (!read_oneliner(&buf, rebase_path_orig_head(), 0) || + get_sha1_hex(buf.buf, orig)) { + res = error(_("could not read orig-head")); + goto cleanup_head_ref; + } + strbuf_addf(&buf, "rebase -i (finish): %s onto ", + head_ref.buf); + if (!read_oneliner(&buf, rebase_path_onto(), 0)) { + res = error(_("could not read 'onto'")); + goto cleanup_head_ref; + } + if (update_ref(buf.buf, head_ref.buf, head, orig, + REF_NODEREF, UPDATE_REFS_MSG_ON_ERR)) { + res = error(_("could not update %s"), + head_ref.buf); + goto cleanup_head_ref; + } + strbuf_reset(&buf); + strbuf_addf(&buf, + "rebase -i (finish): returning to %s", + head_ref.buf); + if (create_symref("HEAD", head_ref.buf, buf.buf)) { + res = error(_("could not update HEAD to %s"), + head_ref.buf); + goto cleanup_head_ref; + } + strbuf_reset(&buf); + } + if (opts->verbose) { struct rev_info log_tree_opt; struct object_id orig, head; @@ -1810,6 +1853,7 @@ static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) } } strbuf_release(&buf); + strbuf_release(&head_ref); } /* From 4a5146f9d2f739803b8fde643e02c2a9474fb0e8 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Mon, 2 Jan 2017 16:27:57 +0100 Subject: [PATCH 18/38] sequencer (rebase -i): leave a patch upon error When doing an interactive rebase, we want to leave a 'patch' file for further inspection by the user (even if we never tried to actually apply that patch, since we're cherry-picking instead). Signed-off-by: Johannes Schindelin Signed-off-by: Junio C Hamano --- sequencer.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/sequencer.c b/sequencer.c index 80b2b2a975..a2002f1c12 100644 --- a/sequencer.c +++ b/sequencer.c @@ -1769,7 +1769,9 @@ static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) intend_to_amend(); return error_failed_squash(item->commit, opts, item->arg_len, item->arg); - } + } else if (res && is_rebase_i(opts)) + return res | error_with_patch(item->commit, + item->arg, item->arg_len, opts, res, 0); } else if (item->command == TODO_EXEC) { char *end_of_arg = (char *)(item->arg + item->arg_len); int saved = *end_of_arg; From 04efc8b57c17ab31de1c4c53e52838659dfeecc5 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Mon, 2 Jan 2017 16:28:00 +0100 Subject: [PATCH 19/38] sequencer (rebase -i): implement the 'reword' command This is now trivial, as all the building blocks are in place: all we need to do is to flip the "edit" switch when committing. Signed-off-by: Johannes Schindelin Signed-off-by: Junio C Hamano --- sequencer.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/sequencer.c b/sequencer.c index a2002f1c12..50e998acc4 100644 --- a/sequencer.c +++ b/sequencer.c @@ -718,6 +718,7 @@ enum todo_command { TODO_PICK = 0, TODO_REVERT, TODO_EDIT, + TODO_REWORD, TODO_FIXUP, TODO_SQUASH, /* commands that do something else than handling a single commit */ @@ -733,6 +734,7 @@ static struct { { 'p', "pick" }, { 0, "revert" }, { 'e', "edit" }, + { 'r', "reword" }, { 'f', "fixup" }, { 's', "squash" }, { 'x', "exec" }, @@ -962,7 +964,9 @@ static int do_pick_commit(enum todo_command command, struct commit *commit, } } - if (is_fixup(command)) { + if (command == TODO_REWORD) + edit = 1; + else if (is_fixup(command)) { if (update_squash_messages(command, commit, opts)) return -1; amend = 1; @@ -1771,7 +1775,8 @@ static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) item->arg_len, item->arg); } else if (res && is_rebase_i(opts)) return res | error_with_patch(item->commit, - item->arg, item->arg_len, opts, res, 0); + item->arg, item->arg_len, opts, res, + item->command == TODO_REWORD); } else if (item->command == TODO_EXEC) { char *end_of_arg = (char *)(item->arg + item->arg_len); int saved = *end_of_arg; From bcbb68be2e287209eb257de314d72d022712e4c9 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Mon, 2 Jan 2017 16:28:05 +0100 Subject: [PATCH 20/38] sequencer (rebase -i): allow fast-forwarding for edit/reword The sequencer already knew how to fast-forward instead of cherry-picking, if possible. We want to continue to do this, of course, but in case of the 'reword' command, we will need to call `git commit` after fast-forwarding. Signed-off-by: Johannes Schindelin Signed-off-by: Junio C Hamano --- sequencer.c | 25 +++++++++++++++++-------- 1 file changed, 17 insertions(+), 8 deletions(-) diff --git a/sequencer.c b/sequencer.c index 50e998acc4..23161f593e 100644 --- a/sequencer.c +++ b/sequencer.c @@ -860,7 +860,7 @@ static int do_pick_commit(enum todo_command command, struct commit *commit, const char *base_label, *next_label; struct commit_message msg = { NULL, NULL, NULL, NULL }; struct strbuf msgbuf = STRBUF_INIT; - int res, unborn = 0, amend = 0, allow; + int res, unborn = 0, amend = 0, allow = 0; if (opts->no_commit) { /* @@ -905,11 +905,23 @@ static int do_pick_commit(enum todo_command command, struct commit *commit, else parent = commit->parents->item; + if (get_message(commit, &msg) != 0) + return error(_("cannot get commit message for %s"), + oid_to_hex(&commit->object.oid)); + if (opts->allow_ff && !is_fixup(command) && ((parent && !hashcmp(parent->object.oid.hash, head)) || - (!parent && unborn))) - return fast_forward_to(commit->object.oid.hash, head, unborn, opts); - + (!parent && unborn))) { + if (is_rebase_i(opts)) + write_author_script(msg.message); + res = fast_forward_to(commit->object.oid.hash, head, unborn, + opts); + if (res || command != TODO_REWORD) + goto leave; + edit = amend = 1; + msg_file = NULL; + goto fast_forward_edit; + } if (parent && parse_commit(parent) < 0) /* TRANSLATORS: The first %s will be a "todo" command like "revert" or "pick", the second %s a SHA1. */ @@ -917,10 +929,6 @@ static int do_pick_commit(enum todo_command command, struct commit *commit, command_to_string(command), oid_to_hex(&parent->object.oid)); - if (get_message(commit, &msg) != 0) - return error(_("cannot get commit message for %s"), - oid_to_hex(&commit->object.oid)); - /* * "commit" is an existing commit. We would want to apply * the difference it introduces since its first parent "prev" @@ -1044,6 +1052,7 @@ static int do_pick_commit(enum todo_command command, struct commit *commit, goto leave; } if (!opts->no_commit) +fast_forward_edit: res = run_git_commit(msg_file, opts, allow, edit, amend, cleanup_commit_message); From 96e832a5fd6a97f8d40d89d4c1e97e7e3534edf0 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Mon, 2 Jan 2017 16:28:09 +0100 Subject: [PATCH 21/38] sequencer (rebase -i): refactor setting the reflog message This makes the code DRYer, with the obvious benefit that we can enhance the code further in a single place. We can also reuse the functionality elsewhere by calling this new function. Signed-off-by: Johannes Schindelin Signed-off-by: Junio C Hamano --- sequencer.c | 33 ++++++++++++++++++++++++++------- 1 file changed, 26 insertions(+), 7 deletions(-) diff --git a/sequencer.c b/sequencer.c index 23161f593e..0d8e11f580 100644 --- a/sequencer.c +++ b/sequencer.c @@ -1743,6 +1743,26 @@ static int is_final_fixup(struct todo_list *todo_list) return 1; } +static const char *reflog_message(struct replay_opts *opts, + const char *sub_action, const char *fmt, ...) +{ + va_list ap; + static struct strbuf buf = STRBUF_INIT; + + va_start(ap, fmt); + strbuf_reset(&buf); + strbuf_addstr(&buf, action_name(opts)); + if (sub_action) + strbuf_addf(&buf, " (%s)", sub_action); + if (fmt) { + strbuf_addstr(&buf, ": "); + strbuf_vaddf(&buf, fmt, ap); + } + va_end(ap); + + return buf.buf; +} + static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) { int res = 0; @@ -1810,6 +1830,7 @@ static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) if (read_oneliner(&head_ref, rebase_path_head_name(), 0) && starts_with(head_ref.buf, "refs/")) { + const char *msg; unsigned char head[20], orig[20]; int res; @@ -1825,23 +1846,21 @@ cleanup_head_ref: res = error(_("could not read orig-head")); goto cleanup_head_ref; } - strbuf_addf(&buf, "rebase -i (finish): %s onto ", - head_ref.buf); if (!read_oneliner(&buf, rebase_path_onto(), 0)) { res = error(_("could not read 'onto'")); goto cleanup_head_ref; } - if (update_ref(buf.buf, head_ref.buf, head, orig, + msg = reflog_message(opts, "finish", "%s onto %s", + head_ref.buf, buf.buf); + if (update_ref(msg, head_ref.buf, head, orig, REF_NODEREF, UPDATE_REFS_MSG_ON_ERR)) { res = error(_("could not update %s"), head_ref.buf); goto cleanup_head_ref; } - strbuf_reset(&buf); - strbuf_addf(&buf, - "rebase -i (finish): returning to %s", + msg = reflog_message(opts, "finish", "returning to %s", head_ref.buf); - if (create_symref("HEAD", head_ref.buf, buf.buf)) { + if (create_symref("HEAD", head_ref.buf, msg)) { res = error(_("could not update HEAD to %s"), head_ref.buf); goto cleanup_head_ref; From 8ab37ef21f9c48bf034128523c489b4f39bcbb88 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Mon, 2 Jan 2017 16:28:13 +0100 Subject: [PATCH 22/38] sequencer (rebase -i): set the reflog message consistently We already used the same reflog message as the scripted version of rebase -i when finishing. With this commit, we do that also for all the commands before that. Signed-off-by: Johannes Schindelin Signed-off-by: Junio C Hamano --- sequencer.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/sequencer.c b/sequencer.c index 0d8e11f580..95ae4bcd1e 100644 --- a/sequencer.c +++ b/sequencer.c @@ -1785,6 +1785,10 @@ static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) unlink(rebase_path_amend()); } if (item->command <= TODO_SQUASH) { + if (is_rebase_i(opts)) + setenv("GIT_REFLOG_ACTION", reflog_message(opts, + command_to_string(item->command), NULL), + 1); res = do_pick_commit(item->command, item->commit, opts, is_final_fixup(todo_list)); if (item->command == TODO_EDIT) { From 25cb8df97c9be26d7638e79595d361fbc40b65a0 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Mon, 2 Jan 2017 16:28:16 +0100 Subject: [PATCH 23/38] sequencer (rebase -i): copy commit notes at end When rebasing commits that have commit notes attached, the interactive rebase rewrites those notes faithfully at the end. The sequencer must do this, too, if it wishes to do interactive rebase's job. Signed-off-by: Johannes Schindelin Signed-off-by: Junio C Hamano --- sequencer.c | 76 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 76 insertions(+) diff --git a/sequencer.c b/sequencer.c index 95ae4bcd1e..50380a15b8 100644 --- a/sequencer.c +++ b/sequencer.c @@ -95,6 +95,15 @@ static GIT_PATH_FUNC(rebase_path_amend, "rebase-merge/amend") * the abbreviated commit name of the corresponding patch. */ static GIT_PATH_FUNC(rebase_path_stopped_sha, "rebase-merge/stopped-sha") +/* + * For the post-rewrite hook, we make a list of rewritten commits and + * their new sha1s. The rewritten-pending list keeps the sha1s of + * commits that have been processed, but not committed yet, + * e.g. because they are waiting for a 'squash' command. + */ +static GIT_PATH_FUNC(rebase_path_rewritten_list, "rebase-merge/rewritten-list") +static GIT_PATH_FUNC(rebase_path_rewritten_pending, + "rebase-merge/rewritten-pending") /* * The following files are written by git-rebase just after parsing the * command-line (and are only consumed, not modified, by the sequencer). @@ -850,6 +859,44 @@ static int update_squash_messages(enum todo_command command, return res; } +static void flush_rewritten_pending(void) { + struct strbuf buf = STRBUF_INIT; + unsigned char newsha1[20]; + FILE *out; + + if (strbuf_read_file(&buf, rebase_path_rewritten_pending(), 82) > 0 && + !get_sha1("HEAD", newsha1) && + (out = fopen(rebase_path_rewritten_list(), "a"))) { + char *bol = buf.buf, *eol; + + while (*bol) { + eol = strchrnul(bol, '\n'); + fprintf(out, "%.*s %s\n", (int)(eol - bol), + bol, sha1_to_hex(newsha1)); + if (!*eol) + break; + bol = eol + 1; + } + fclose(out); + unlink(rebase_path_rewritten_pending()); + } + strbuf_release(&buf); +} + +static void record_in_rewritten(struct object_id *oid, + enum todo_command next_command) { + FILE *out = fopen(rebase_path_rewritten_pending(), "a"); + + if (!out) + return; + + fprintf(out, "%s\n", oid_to_hex(oid)); + fclose(out); + + if (!is_fixup(next_command)) + flush_rewritten_pending(); +} + static int do_pick_commit(enum todo_command command, struct commit *commit, struct replay_opts *opts, int final_fixup) { @@ -1743,6 +1790,17 @@ static int is_final_fixup(struct todo_list *todo_list) return 1; } +static enum todo_command peek_command(struct todo_list *todo_list, int offset) +{ + int i; + + for (i = todo_list->current + offset; i < todo_list->nr; i++) + if (!is_noop(todo_list->items[i].command)) + return todo_list->items[i].command; + + return -1; +} + static const char *reflog_message(struct replay_opts *opts, const char *sub_action, const char *fmt, ...) { @@ -1801,6 +1859,9 @@ static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) item->arg, item->arg_len, opts, res, !res); } + if (is_rebase_i(opts) && !res) + record_in_rewritten(&item->commit->object.oid, + peek_command(todo_list, 1)); if (res && is_fixup(item->command)) { if (res == 1) intend_to_amend(); @@ -1827,6 +1888,7 @@ static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) if (is_rebase_i(opts)) { struct strbuf head_ref = STRBUF_INIT, buf = STRBUF_INIT; + struct stat st; /* Stopped in the middle, as planned? */ if (todo_list->current < todo_list->nr) @@ -1891,6 +1953,20 @@ cleanup_head_ref: log_tree_diff_flush(&log_tree_opt); } } + flush_rewritten_pending(); + if (!stat(rebase_path_rewritten_list(), &st) && + st.st_size > 0) { + struct child_process child = CHILD_PROCESS_INIT; + + child.in = open(rebase_path_rewritten_list(), O_RDONLY); + child.git_cmd = 1; + argv_array_push(&child.args, "notes"); + argv_array_push(&child.args, "copy"); + argv_array_push(&child.args, "--for-rewrite=rebase"); + /* we don't care if this copying failed */ + run_command(&child); + } + strbuf_release(&buf); strbuf_release(&head_ref); } From ca98c6d4870d9743ee1fab9f70d1f455895811d6 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Mon, 2 Jan 2017 16:28:20 +0100 Subject: [PATCH 24/38] sequencer (rebase -i): record interrupted commits in rewritten, too When continuing after a `pick` command failed, we want that commit to show up in the rewritten-list (and its notes to be rewritten), too. Signed-off-by: Johannes Schindelin Signed-off-by: Junio C Hamano --- sequencer.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/sequencer.c b/sequencer.c index 50380a15b8..d7273fd1b3 100644 --- a/sequencer.c +++ b/sequencer.c @@ -2060,6 +2060,14 @@ int sequencer_continue(struct replay_opts *opts) goto release_todo_list; } todo_list.current++; + } else if (file_exists(rebase_path_stopped_sha())) { + struct strbuf buf = STRBUF_INIT; + struct object_id oid; + + if (read_oneliner(&buf, rebase_path_stopped_sha(), 1) && + !get_sha1_committish(buf.buf, oid.hash)) + record_in_rewritten(&oid, peek_command(&todo_list, 0)); + strbuf_release(&buf); } res = pick_commits(&todo_list, opts); From 795160457db0982c44cc02f66798a35af4d15625 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Mon, 2 Jan 2017 16:28:23 +0100 Subject: [PATCH 25/38] sequencer (rebase -i): run the post-rewrite hook, if needed Signed-off-by: Johannes Schindelin Signed-off-by: Junio C Hamano --- sequencer.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/sequencer.c b/sequencer.c index d7273fd1b3..43ced8db31 100644 --- a/sequencer.c +++ b/sequencer.c @@ -1957,6 +1957,8 @@ cleanup_head_ref: if (!stat(rebase_path_rewritten_list(), &st) && st.st_size > 0) { struct child_process child = CHILD_PROCESS_INIT; + const char *post_rewrite_hook = + find_hook("post-rewrite"); child.in = open(rebase_path_rewritten_list(), O_RDONLY); child.git_cmd = 1; @@ -1965,6 +1967,18 @@ cleanup_head_ref: argv_array_push(&child.args, "--for-rewrite=rebase"); /* we don't care if this copying failed */ run_command(&child); + + if (post_rewrite_hook) { + struct child_process hook = CHILD_PROCESS_INIT; + + hook.in = open(rebase_path_rewritten_list(), + O_RDONLY); + hook.stdout_to_stderr = 1; + argv_array_push(&hook.args, post_rewrite_hook); + argv_array_push(&hook.args, "rebase"); + /* we don't care if this hook failed */ + run_command(&hook); + } } strbuf_release(&buf); From 796c7972c7236634655d2333333e9f871149b994 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Mon, 2 Jan 2017 16:28:27 +0100 Subject: [PATCH 26/38] sequencer (rebase -i): respect the rebase.autostash setting Git's `rebase` command inspects the `rebase.autostash` config setting to determine whether it should stash any uncommitted changes before rebasing and re-apply them afterwards. As we introduce more bits and pieces to let the sequencer act as interactive rebase's backend, here is the part that adds support for the autostash feature. Signed-off-by: Johannes Schindelin Signed-off-by: Junio C Hamano --- sequencer.c | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) diff --git a/sequencer.c b/sequencer.c index 43ced8db31..06f7cebe48 100644 --- a/sequencer.c +++ b/sequencer.c @@ -113,6 +113,7 @@ static GIT_PATH_FUNC(rebase_path_orig_head, "rebase-merge/orig-head") static GIT_PATH_FUNC(rebase_path_verbose, "rebase-merge/verbose") static GIT_PATH_FUNC(rebase_path_head_name, "rebase-merge/head-name") static GIT_PATH_FUNC(rebase_path_onto, "rebase-merge/onto") +static GIT_PATH_FUNC(rebase_path_autostash, "rebase-merge/autostash") static inline int is_rebase_i(const struct replay_opts *opts) { @@ -1801,6 +1802,47 @@ static enum todo_command peek_command(struct todo_list *todo_list, int offset) return -1; } +static int apply_autostash(struct replay_opts *opts) +{ + struct strbuf stash_sha1 = STRBUF_INIT; + struct child_process child = CHILD_PROCESS_INIT; + int ret = 0; + + if (!read_oneliner(&stash_sha1, rebase_path_autostash(), 1)) { + strbuf_release(&stash_sha1); + return 0; + } + strbuf_trim(&stash_sha1); + + child.git_cmd = 1; + argv_array_push(&child.args, "stash"); + argv_array_push(&child.args, "apply"); + argv_array_push(&child.args, stash_sha1.buf); + if (!run_command(&child)) + printf(_("Applied autostash.")); + else { + struct child_process store = CHILD_PROCESS_INIT; + + store.git_cmd = 1; + argv_array_push(&store.args, "stash"); + argv_array_push(&store.args, "store"); + argv_array_push(&store.args, "-m"); + argv_array_push(&store.args, "autostash"); + argv_array_push(&store.args, "-q"); + argv_array_push(&store.args, stash_sha1.buf); + if (run_command(&store)) + ret = error(_("cannot store %s"), stash_sha1.buf); + else + printf(_("Applying autostash resulted in conflicts.\n" + "Your changes are safe in the stash.\n" + "You can run \"git stash pop\" or" + " \"git stash drop\" at any time.\n")); + } + + strbuf_release(&stash_sha1); + return ret; +} + static const char *reflog_message(struct replay_opts *opts, const char *sub_action, const char *fmt, ...) { @@ -1980,6 +2022,7 @@ cleanup_head_ref: run_command(&hook); } } + apply_autostash(opts); strbuf_release(&buf); strbuf_release(&head_ref); From ca6c6b45dd9c36ae3e0b4f1fc9812d1e6a8b59bc Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Mon, 2 Jan 2017 16:28:30 +0100 Subject: [PATCH 27/38] sequencer (rebase -i): respect strategy/strategy_opts settings The sequencer already has an idea about using different merge strategies. We just piggy-back on top of that, using rebase -i's own settings, when running the sequencer in interactive rebase mode. Signed-off-by: Johannes Schindelin Signed-off-by: Junio C Hamano --- sequencer.c | 26 +++++++++++++++++++++++++- 1 file changed, 25 insertions(+), 1 deletion(-) diff --git a/sequencer.c b/sequencer.c index 06f7cebe48..04a64cf0dc 100644 --- a/sequencer.c +++ b/sequencer.c @@ -114,6 +114,8 @@ static GIT_PATH_FUNC(rebase_path_verbose, "rebase-merge/verbose") static GIT_PATH_FUNC(rebase_path_head_name, "rebase-merge/head-name") static GIT_PATH_FUNC(rebase_path_onto, "rebase-merge/onto") static GIT_PATH_FUNC(rebase_path_autostash, "rebase-merge/autostash") +static GIT_PATH_FUNC(rebase_path_strategy, "rebase-merge/strategy") +static GIT_PATH_FUNC(rebase_path_strategy_opts, "rebase-merge/strategy_opts") static inline int is_rebase_i(const struct replay_opts *opts) { @@ -1368,6 +1370,26 @@ static int populate_opts_cb(const char *key, const char *value, void *data) return 0; } +static void read_strategy_opts(struct replay_opts *opts, struct strbuf *buf) +{ + int i; + + strbuf_reset(buf); + if (!read_oneliner(buf, rebase_path_strategy(), 0)) + return; + opts->strategy = strbuf_detach(buf, NULL); + if (!read_oneliner(buf, rebase_path_strategy_opts(), 0)) + return; + + opts->xopts_nr = split_cmdline(buf->buf, (const char ***)&opts->xopts); + for (i = 0; i < opts->xopts_nr; i++) { + const char *arg = opts->xopts[i]; + + skip_prefix(arg, "--", &arg); + opts->xopts[i] = xstrdup(arg); + } +} + static int read_populate_opts(struct replay_opts *opts) { if (is_rebase_i(opts)) { @@ -1381,11 +1403,13 @@ static int read_populate_opts(struct replay_opts *opts) opts->gpg_sign = xstrdup(buf.buf + 2); } } - strbuf_release(&buf); if (file_exists(rebase_path_verbose())) opts->verbose = 1; + read_strategy_opts(opts, &buf); + strbuf_release(&buf); + return 0; } From 9d7bf3cf993ab59e0f9d7150534213f57dd12741 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Mon, 2 Jan 2017 16:28:34 +0100 Subject: [PATCH 28/38] sequencer (rebase -i): allow rescheduling commands The interactive rebase has the very special magic that a cherry-pick that exits with a status different from 0 and 1 signifies a failure to even record that a cherry-pick was started. This can happen e.g. when a fast-forward fails because it would overwrite untracked files. In that case, we must reschedule the command that we thought we already had at least started successfully. Signed-off-by: Johannes Schindelin Signed-off-by: Junio C Hamano --- sequencer.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/sequencer.c b/sequencer.c index 04a64cf0dc..dd5b843a84 100644 --- a/sequencer.c +++ b/sequencer.c @@ -1915,6 +1915,12 @@ static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) 1); res = do_pick_commit(item->command, item->commit, opts, is_final_fixup(todo_list)); + if (is_rebase_i(opts) && res < 0) { + /* Reschedule */ + todo_list->current--; + if (save_todo(todo_list, opts)) + return -1; + } if (item->command == TODO_EDIT) { struct commit *commit = item->commit; if (!res) From b3fdd581ae0e8793b8a1dabbee19334067229888 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Mon, 2 Jan 2017 16:34:34 +0100 Subject: [PATCH 29/38] sequencer (rebase -i): implement the 'drop' command The parsing part of a 'drop' command is almost identical to parsing a 'pick', while the operation is the same as that of a 'noop'. Signed-off-by: Johannes Schindelin Signed-off-by: Junio C Hamano --- sequencer.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/sequencer.c b/sequencer.c index dd5b843a84..6e92f186ae 100644 --- a/sequencer.c +++ b/sequencer.c @@ -736,7 +736,8 @@ enum todo_command { /* commands that do something else than handling a single commit */ TODO_EXEC, /* commands that do nothing but are counted for reporting progress */ - TODO_NOOP + TODO_NOOP, + TODO_DROP }; static struct { @@ -750,7 +751,8 @@ static struct { { 'f', "fixup" }, { 's', "squash" }, { 'x', "exec" }, - { 0, "noop" } + { 0, "noop" }, + { 'd', "drop" } }; static const char *command_to_string(const enum todo_command command) @@ -762,7 +764,7 @@ static const char *command_to_string(const enum todo_command command) static int is_noop(const enum todo_command command) { - return TODO_NOOP <= (size_t)command; + return TODO_NOOP <= command; } static int is_fixup(enum todo_command command) From ac191470c7dba893388f4038851d68fea2094cea Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Mon, 2 Jan 2017 16:34:39 +0100 Subject: [PATCH 30/38] sequencer (rebase -i): differentiate between comments and 'noop' In the upcoming patch, we will support rebase -i's progress reporting. The progress skips comments but counts 'noop's. Signed-off-by: Johannes Schindelin Signed-off-by: Junio C Hamano --- sequencer.c | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-) diff --git a/sequencer.c b/sequencer.c index 6e92f186ae..41f80ea2c4 100644 --- a/sequencer.c +++ b/sequencer.c @@ -737,7 +737,9 @@ enum todo_command { TODO_EXEC, /* commands that do nothing but are counted for reporting progress */ TODO_NOOP, - TODO_DROP + TODO_DROP, + /* comments (not counted for reporting progress) */ + TODO_COMMENT }; static struct { @@ -752,12 +754,13 @@ static struct { { 's', "squash" }, { 'x', "exec" }, { 0, "noop" }, - { 'd', "drop" } + { 'd', "drop" }, + { 0, NULL } }; static const char *command_to_string(const enum todo_command command) { - if ((size_t)command < ARRAY_SIZE(todo_command_info)) + if (command < TODO_COMMENT) return todo_command_info[command].str; die("Unknown command: %d", command); } @@ -1198,14 +1201,14 @@ static int parse_insn_line(struct todo_item *item, const char *bol, char *eol) bol += strspn(bol, " \t"); if (bol == eol || *bol == '\r' || *bol == comment_line_char) { - item->command = TODO_NOOP; + item->command = TODO_COMMENT; item->commit = NULL; item->arg = bol; item->arg_len = eol - bol; return 0; } - for (i = 0; i < ARRAY_SIZE(todo_command_info); i++) + for (i = 0; i < TODO_COMMENT; i++) if (skip_prefix(bol, todo_command_info[i].str, &bol)) { item->command = i; break; @@ -1214,7 +1217,7 @@ static int parse_insn_line(struct todo_item *item, const char *bol, char *eol) item->command = i; break; } - if (i >= ARRAY_SIZE(todo_command_info)) + if (i >= TODO_COMMENT) return -1; if (item->command == TODO_NOOP) { From a2a20b0d5c97580497da37814c8b62114ce25f81 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Mon, 2 Jan 2017 16:35:25 +0100 Subject: [PATCH 31/38] sequencer: update reading author-script Rather than abusing a strbuf to come up with an environment block, let's just use the argv_array structure which serves the same purpose much better. While at it, rename the function to reflect the fact that it does not really care exactly what environment variables are defined in said file. Suggested-by: Jeff King Signed-off-by: Johannes Schindelin Signed-off-by: Junio C Hamano --- sequencer.c | 34 ++++++++++++---------------------- t/t3404-rebase-interactive.sh | 16 ++++++++++++++++ 2 files changed, 28 insertions(+), 22 deletions(-) diff --git a/sequencer.c b/sequencer.c index 41f80ea2c4..7acd0bd1b8 100644 --- a/sequencer.c +++ b/sequencer.c @@ -544,18 +544,17 @@ missing_author: } /* - * Read the author-script file into an environment block, ready for use in - * run_command(), that can be free()d afterwards. + * Read a list of environment variable assignments (such as the author-script + * file) into an environment block. Returns -1 on error, 0 otherwise. */ -static char **read_author_script(void) +static int read_env_script(struct argv_array *env) { struct strbuf script = STRBUF_INIT; int i, count = 0; - char *p, *p2, **env; - size_t env_size; + char *p, *p2; if (strbuf_read_file(&script, rebase_path_author_script(), 256) <= 0) - return NULL; + return -1; for (p = script.buf; *p; p++) if (skip_prefix(p, "'\\\\''", (const char **)&p2)) @@ -567,19 +566,12 @@ static char **read_author_script(void) count++; } - env_size = (count + 1) * sizeof(*env); - strbuf_grow(&script, env_size); - memmove(script.buf + env_size, script.buf, script.len); - p = script.buf + env_size; - env = (char **)strbuf_detach(&script, NULL); - - for (i = 0; i < count; i++) { - env[i] = p; + for (i = 0, p = script.buf; i < count; i++) { + argv_array_push(env, p); p += strlen(p) + 1; } - env[count] = NULL; - return env; + return 0; } static const char staged_changes_advice[] = @@ -612,14 +604,12 @@ static int run_git_commit(const char *defmsg, struct replay_opts *opts, int allow_empty, int edit, int amend, int cleanup_commit_message) { - char **env = NULL; - struct argv_array array; + struct argv_array env = ARGV_ARRAY_INIT, array; int rc; const char *value; if (is_rebase_i(opts)) { - env = read_author_script(); - if (!env) { + if (!read_env_script(&env)) { const char *gpg_opt = gpg_sign_opt_quoted(opts); return error(_(staged_changes_advice), @@ -655,9 +645,9 @@ static int run_git_commit(const char *defmsg, struct replay_opts *opts, argv_array_push(&array, "--allow-empty-message"); rc = run_command_v_opt_cd_env(array.argv, RUN_GIT_CMD, NULL, - (const char *const *)env); + (const char *const *)env.argv); argv_array_clear(&array); - free(env); + argv_array_clear(&env); return rc; } diff --git a/t/t3404-rebase-interactive.sh b/t/t3404-rebase-interactive.sh index c896a4c106..e2f18d11f6 100755 --- a/t/t3404-rebase-interactive.sh +++ b/t/t3404-rebase-interactive.sh @@ -237,6 +237,22 @@ test_expect_success 'retain authorship' ' git show HEAD | grep "^Author: Twerp Snog" ' +test_expect_success 'retain authorship w/ conflicts' ' + git reset --hard twerp && + test_commit a conflict a conflict-a && + git reset --hard twerp && + GIT_AUTHOR_NAME=AttributeMe \ + test_commit b conflict b conflict-b && + set_fake_editor && + test_must_fail git rebase -i conflict-a && + echo resolved >conflict && + git add conflict && + git rebase --continue && + test $(git rev-parse conflict-a^0) = $(git rev-parse HEAD^) && + git show >out && + grep AttributeMe out +' + test_expect_success 'squash' ' git reset --hard twerp && echo B > file7 && From 07d968ef14ae4a783be690985ae77bbcee722c83 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Mon, 2 Jan 2017 16:35:29 +0100 Subject: [PATCH 32/38] sequencer: use run_command() directly Instead of using the convenience function run_command_v_opt_cd_env(), we now use the run_command() function. The former function is simply a wrapper of the latter, trying to make it more convenient to use. However, we already have to construct the argv and the env parameters, and we will need even finer control e.g. over the output of the command, so let's just stop using the convenience function. Based on patches and suggestions by Johannes Sixt and Jeff King. Signed-off-by: Johannes Schindelin Signed-off-by: Junio C Hamano --- sequencer.c | 36 ++++++++++++++++-------------------- 1 file changed, 16 insertions(+), 20 deletions(-) diff --git a/sequencer.c b/sequencer.c index 7acd0bd1b8..6d5d6c3e9b 100644 --- a/sequencer.c +++ b/sequencer.c @@ -604,12 +604,13 @@ static int run_git_commit(const char *defmsg, struct replay_opts *opts, int allow_empty, int edit, int amend, int cleanup_commit_message) { - struct argv_array env = ARGV_ARRAY_INIT, array; - int rc; + struct child_process cmd = CHILD_PROCESS_INIT; const char *value; + cmd.git_cmd = 1; + if (is_rebase_i(opts)) { - if (!read_env_script(&env)) { + if (read_env_script(&cmd.env_array)) { const char *gpg_opt = gpg_sign_opt_quoted(opts); return error(_(staged_changes_advice), @@ -617,39 +618,34 @@ static int run_git_commit(const char *defmsg, struct replay_opts *opts, } } - argv_array_init(&array); - argv_array_push(&array, "commit"); - argv_array_push(&array, "-n"); + argv_array_push(&cmd.args, "commit"); + argv_array_push(&cmd.args, "-n"); if (amend) - argv_array_push(&array, "--amend"); + argv_array_push(&cmd.args, "--amend"); if (opts->gpg_sign) - argv_array_pushf(&array, "-S%s", opts->gpg_sign); + argv_array_pushf(&cmd.args, "-S%s", opts->gpg_sign); if (opts->signoff) - argv_array_push(&array, "-s"); + argv_array_push(&cmd.args, "-s"); if (defmsg) - argv_array_pushl(&array, "-F", defmsg, NULL); + argv_array_pushl(&cmd.args, "-F", defmsg, NULL); if (cleanup_commit_message) - argv_array_push(&array, "--cleanup=strip"); + argv_array_push(&cmd.args, "--cleanup=strip"); if (edit) - argv_array_push(&array, "-e"); + argv_array_push(&cmd.args, "-e"); else if (!cleanup_commit_message && !opts->signoff && !opts->record_origin && git_config_get_value("commit.cleanup", &value)) - argv_array_push(&array, "--cleanup=verbatim"); + argv_array_push(&cmd.args, "--cleanup=verbatim"); if (allow_empty) - argv_array_push(&array, "--allow-empty"); + argv_array_push(&cmd.args, "--allow-empty"); if (opts->allow_empty_message) - argv_array_push(&array, "--allow-empty-message"); + argv_array_push(&cmd.args, "--allow-empty-message"); - rc = run_command_v_opt_cd_env(array.argv, RUN_GIT_CMD, NULL, - (const char *const *)env.argv); - argv_array_clear(&array); - argv_array_clear(&env); - return rc; + return run_command(&cmd); } static int is_original_commit_empty(struct commit *commit) From 9a757c4970837162dfe4a64b70a428209c135641 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Mon, 2 Jan 2017 16:35:34 +0100 Subject: [PATCH 33/38] sequencer (rebase -i): show only failed `git commit`'s output This is the behavior of the shell script version of the interactive rebase, by using the `output` function defined in `git-rebase.sh`. Signed-off-by: Johannes Schindelin Signed-off-by: Junio C Hamano --- sequencer.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/sequencer.c b/sequencer.c index 6d5d6c3e9b..84534ee057 100644 --- a/sequencer.c +++ b/sequencer.c @@ -610,6 +610,11 @@ static int run_git_commit(const char *defmsg, struct replay_opts *opts, cmd.git_cmd = 1; if (is_rebase_i(opts)) { + if (!edit) { + cmd.stdout_to_stderr = 1; + cmd.err = -1; + } + if (read_env_script(&cmd.env_array)) { const char *gpg_opt = gpg_sign_opt_quoted(opts); @@ -644,6 +649,19 @@ static int run_git_commit(const char *defmsg, struct replay_opts *opts, if (opts->allow_empty_message) argv_array_push(&cmd.args, "--allow-empty-message"); + if (cmd.err == -1) { + /* hide stderr on success */ + struct strbuf buf = STRBUF_INIT; + int rc = pipe_command(&cmd, + NULL, 0, + /* stdout is already redirected */ + NULL, 0, + &buf, 0); + if (rc) + fputs(buf.buf, stderr); + strbuf_release(&buf); + return rc; + } return run_command(&cmd); } From 62fdb6529a5b744e544ec3d776ba1adf48dab751 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Mon, 2 Jan 2017 16:35:39 +0100 Subject: [PATCH 34/38] sequencer (rebase -i): show only failed cherry-picks' output This is the behavior of the shell script version of the interactive rebase, by using the `output` function defined in `git-rebase.sh`. Signed-off-by: Johannes Schindelin Signed-off-by: Junio C Hamano --- sequencer.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/sequencer.c b/sequencer.c index 84534ee057..27dc91cc95 100644 --- a/sequencer.c +++ b/sequencer.c @@ -433,6 +433,8 @@ static int do_recursive_merge(struct commit *base, struct commit *next, o.ancestor = base ? base_label : "(empty tree)"; o.branch1 = "HEAD"; o.branch2 = next ? next_label : "(empty tree)"; + if (is_rebase_i(opts)) + o.buffer_output = 2; head_tree = parse_tree_indirect(head); next_tree = next ? next->tree : empty_tree(); @@ -444,6 +446,8 @@ static int do_recursive_merge(struct commit *base, struct commit *next, clean = merge_trees(&o, head_tree, next_tree, base_tree, &result); + if (is_rebase_i(opts) && clean <= 0) + fputs(o.obuf.buf, stdout); strbuf_release(&o.obuf); if (clean < 0) return clean; From 27fdbb96aae789105dadbddbfa9bccce8f88d3c8 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Mon, 2 Jan 2017 16:35:42 +0100 Subject: [PATCH 35/38] sequencer (rebase -i): suggest --edit-todo upon unknown command This is the same behavior as known from `git rebase -i`. Signed-off-by: Johannes Schindelin Signed-off-by: Junio C Hamano --- sequencer.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/sequencer.c b/sequencer.c index 27dc91cc95..5784fb487b 100644 --- a/sequencer.c +++ b/sequencer.c @@ -1314,8 +1314,12 @@ static int read_populate_todo(struct todo_list *todo_list, close(fd); res = parse_insn_buffer(todo_list->buf.buf, todo_list); - if (res) + if (res) { + if (is_rebase_i(opts)) + return error(_("please fix this using " + "'git rebase --edit-todo'.")); return error(_("unusable instruction sheet: '%s'"), todo_file); + } if (!todo_list->nr && (!is_rebase_i(opts) || !file_exists(rebase_path_done()))) From 968492e44c08f40cbfec083c22e05984f84c2353 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Mon, 2 Jan 2017 16:35:46 +0100 Subject: [PATCH 36/38] sequencer (rebase -i): show the progress The interactive rebase keeps the user informed about its progress. If the sequencer wants to do the grunt work of the interactive rebase, it also needs to show that progress. Signed-off-by: Johannes Schindelin Signed-off-by: Junio C Hamano --- sequencer.c | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) diff --git a/sequencer.c b/sequencer.c index 5784fb487b..aa31191d9a 100644 --- a/sequencer.c +++ b/sequencer.c @@ -1181,6 +1181,7 @@ struct todo_list { struct strbuf buf; struct todo_item *items; int nr, alloc, current; + int done_nr, total_nr; }; #define TODO_LIST_INIT { STRBUF_INIT } @@ -1297,6 +1298,17 @@ static int parse_insn_buffer(char *buf, struct todo_list *todo_list) return res; } +static int count_commands(struct todo_list *todo_list) +{ + int count = 0, i; + + for (i = 0; i < todo_list->nr; i++) + if (todo_list->items[i].command != TODO_COMMENT) + count++; + + return count; +} + static int read_populate_todo(struct todo_list *todo_list, struct replay_opts *opts) { @@ -1339,6 +1351,21 @@ static int read_populate_todo(struct todo_list *todo_list, return error(_("cannot revert during a cherry-pick.")); } + if (is_rebase_i(opts)) { + struct todo_list done = TODO_LIST_INIT; + + if (strbuf_read_file(&done.buf, rebase_path_done(), 0) > 0 && + !parse_insn_buffer(done.buf.buf, &done)) + todo_list->done_nr = count_commands(&done); + else + todo_list->done_nr = 0; + + todo_list->total_nr = todo_list->done_nr + + count_commands(todo_list); + + todo_list_release(&done); + } + return 0; } @@ -1920,6 +1947,11 @@ static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) if (save_todo(todo_list, opts)) return -1; if (is_rebase_i(opts)) { + if (item->command != TODO_COMMENT) + fprintf(stderr, "Rebasing (%d/%d)%s", + ++(todo_list->done_nr), + todo_list->total_nr, + opts->verbose ? "\n" : "\r"); unlink(rebase_path_message()); unlink(rebase_path_author_script()); unlink(rebase_path_stopped_sha()); From ef80069a037e5c5180a67eadedc375e184a28dbb Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Mon, 2 Jan 2017 16:36:20 +0100 Subject: [PATCH 37/38] sequencer (rebase -i): write the progress into files For the benefit of e.g. the shell prompt, the interactive rebase not only displays the progress for the user to see, but also writes it into the msgnum/end files in the state directory. Teach the sequencer this new trick. Signed-off-by: Johannes Schindelin Signed-off-by: Junio C Hamano --- sequencer.c | 30 +++++++++++++++++++++++++++--- 1 file changed, 27 insertions(+), 3 deletions(-) diff --git a/sequencer.c b/sequencer.c index aa31191d9a..5f22919772 100644 --- a/sequencer.c +++ b/sequencer.c @@ -46,6 +46,16 @@ static GIT_PATH_FUNC(rebase_path_todo, "rebase-merge/git-rebase-todo") * actions. */ static GIT_PATH_FUNC(rebase_path_done, "rebase-merge/done") +/* + * The file to keep track of how many commands were already processed (e.g. + * for the prompt). + */ +static GIT_PATH_FUNC(rebase_path_msgnum, "rebase-merge/msgnum"); +/* + * The file to keep track of how many commands are to be processed in total + * (e.g. for the prompt). + */ +static GIT_PATH_FUNC(rebase_path_msgtotal, "rebase-merge/end"); /* * The commit message that is planned to be used for any changes that * need to be committed following a user interaction. @@ -1353,6 +1363,7 @@ static int read_populate_todo(struct todo_list *todo_list, if (is_rebase_i(opts)) { struct todo_list done = TODO_LIST_INIT; + FILE *f = fopen(rebase_path_msgtotal(), "w"); if (strbuf_read_file(&done.buf, rebase_path_done(), 0) > 0 && !parse_insn_buffer(done.buf.buf, &done)) @@ -1362,8 +1373,12 @@ static int read_populate_todo(struct todo_list *todo_list, todo_list->total_nr = todo_list->done_nr + count_commands(todo_list); - todo_list_release(&done); + + if (f) { + fprintf(f, "%d\n", todo_list->total_nr); + fclose(f); + } } return 0; @@ -1947,11 +1962,20 @@ static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) if (save_todo(todo_list, opts)) return -1; if (is_rebase_i(opts)) { - if (item->command != TODO_COMMENT) + if (item->command != TODO_COMMENT) { + FILE *f = fopen(rebase_path_msgnum(), "w"); + + todo_list->done_nr++; + + if (f) { + fprintf(f, "%d\n", todo_list->done_nr); + fclose(f); + } fprintf(stderr, "Rebasing (%d/%d)%s", - ++(todo_list->done_nr), + todo_list->done_nr, todo_list->total_nr, opts->verbose ? "\n" : "\r"); + } unlink(rebase_path_message()); unlink(rebase_path_author_script()); unlink(rebase_path_stopped_sha()); From 5da4966f2808371ba94de467d06b4e7e7ab125d8 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Mon, 2 Jan 2017 16:36:25 +0100 Subject: [PATCH 38/38] sequencer (rebase -i): write out the final message The shell script version of the interactive rebase has a very specific final message. Teach the sequencer to print the same. Signed-off-by: Johannes Schindelin Signed-off-by: Junio C Hamano --- sequencer.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/sequencer.c b/sequencer.c index 5f22919772..1f729b053b 100644 --- a/sequencer.c +++ b/sequencer.c @@ -2127,6 +2127,9 @@ cleanup_head_ref: } apply_autostash(opts); + fprintf(stderr, "Successfully rebased and updated %s.\n", + head_ref.buf); + strbuf_release(&buf); strbuf_release(&head_ref); }