diff options
Diffstat (limited to 'builtin/log.c')
| -rw-r--r-- | builtin/log.c | 1926 |
1 files changed, 1926 insertions, 0 deletions
diff --git a/builtin/log.c b/builtin/log.c new file mode 100644 index 0000000000..55d20cc2d8 --- /dev/null +++ b/builtin/log.c @@ -0,0 +1,1926 @@ +/* + * Builtin "git log" and related commands (show, whatchanged) + * + * (C) Copyright 2006 Linus Torvalds + * 2006 Junio Hamano + */ +#include "cache.h" +#include "refs.h" +#include "color.h" +#include "commit.h" +#include "diff.h" +#include "revision.h" +#include "log-tree.h" +#include "builtin.h" +#include "tag.h" +#include "reflog-walk.h" +#include "patch-ids.h" +#include "run-command.h" +#include "shortlog.h" +#include "remote.h" +#include "string-list.h" +#include "parse-options.h" +#include "line-log.h" +#include "branch.h" +#include "streaming.h" +#include "version.h" +#include "mailmap.h" +#include "gpg-interface.h" + +/* Set a default date-time format for git log ("log.date" config variable) */ +static const char *default_date_mode = NULL; + +static int default_abbrev_commit; +static int default_show_root = 1; +static int default_follow; +static int default_show_signature; +static int decoration_style; +static int decoration_given; +static int use_mailmap_config; +static const char *fmt_patch_subject_prefix = "PATCH"; +static const char *fmt_pretty; + +static const char * const builtin_log_usage[] = { + N_("git log [<options>] [<revision-range>] [[--] <path>...]"), + N_("git show [<options>] <object>..."), + NULL +}; + +struct line_opt_callback_data { + struct rev_info *rev; + const char *prefix; + struct string_list args; +}; + +static int parse_decoration_style(const char *var, const char *value) +{ + switch (git_config_maybe_bool(var, value)) { + case 1: + return DECORATE_SHORT_REFS; + case 0: + return 0; + default: + break; + } + if (!strcmp(value, "full")) + return DECORATE_FULL_REFS; + else if (!strcmp(value, "short")) + return DECORATE_SHORT_REFS; + else if (!strcmp(value, "auto")) + return (isatty(1) || pager_in_use()) ? DECORATE_SHORT_REFS : 0; + return -1; +} + +static int decorate_callback(const struct option *opt, const char *arg, int unset) +{ + if (unset) + decoration_style = 0; + else if (arg) + decoration_style = parse_decoration_style("command line", arg); + else + decoration_style = DECORATE_SHORT_REFS; + + if (decoration_style < 0) + die(_("invalid --decorate option: %s"), arg); + + decoration_given = 1; + + return 0; +} + +static int log_line_range_callback(const struct option *option, const char *arg, int unset) +{ + struct line_opt_callback_data *data = option->value; + + if (!arg) + return -1; + + data->rev->line_level_traverse = 1; + string_list_append(&data->args, arg); + + return 0; +} + +static void init_log_defaults(void) +{ + init_grep_defaults(); + init_diff_ui_defaults(); +} + +static void cmd_log_init_defaults(struct rev_info *rev) +{ + if (fmt_pretty) + get_commit_format(fmt_pretty, rev); + if (default_follow) + DIFF_OPT_SET(&rev->diffopt, DEFAULT_FOLLOW_RENAMES); + rev->verbose_header = 1; + DIFF_OPT_SET(&rev->diffopt, RECURSIVE); + rev->diffopt.stat_width = -1; /* use full terminal width */ + rev->diffopt.stat_graph_width = -1; /* respect statGraphWidth config */ + rev->abbrev_commit = default_abbrev_commit; + rev->show_root_diff = default_show_root; + rev->subject_prefix = fmt_patch_subject_prefix; + rev->show_signature = default_show_signature; + DIFF_OPT_SET(&rev->diffopt, ALLOW_TEXTCONV); + + if (default_date_mode) + parse_date_format(default_date_mode, &rev->date_mode); + rev->diffopt.touched_flags = 0; +} + +static void cmd_log_init_finish(int argc, const char **argv, const char *prefix, + struct rev_info *rev, struct setup_revision_opt *opt) +{ + struct userformat_want w; + int quiet = 0, source = 0, mailmap = 0; + static struct line_opt_callback_data line_cb = {NULL, NULL, STRING_LIST_INIT_DUP}; + + const struct option builtin_log_options[] = { + OPT__QUIET(&quiet, N_("suppress diff output")), + OPT_BOOL(0, "source", &source, N_("show source")), + OPT_BOOL(0, "use-mailmap", &mailmap, N_("Use mail map file")), + { OPTION_CALLBACK, 0, "decorate", NULL, NULL, N_("decorate options"), + PARSE_OPT_OPTARG, decorate_callback}, + OPT_CALLBACK('L', NULL, &line_cb, "n,m:file", + N_("Process line range n,m in file, counting from 1"), + log_line_range_callback), + OPT_END() + }; + + line_cb.rev = rev; + line_cb.prefix = prefix; + + mailmap = use_mailmap_config; + argc = parse_options(argc, argv, prefix, + builtin_log_options, builtin_log_usage, + PARSE_OPT_KEEP_ARGV0 | PARSE_OPT_KEEP_UNKNOWN | + PARSE_OPT_KEEP_DASHDASH); + + if (quiet) + rev->diffopt.output_format |= DIFF_FORMAT_NO_OUTPUT; + argc = setup_revisions(argc, argv, rev, opt); + + /* Any arguments at this point are not recognized */ + if (argc > 1) + die(_("unrecognized argument: %s"), argv[1]); + + memset(&w, 0, sizeof(w)); + userformat_find_requirements(NULL, &w); + + if (!rev->show_notes_given && (!rev->pretty_given || w.notes)) + rev->show_notes = 1; + if (rev->show_notes) + init_display_notes(&rev->notes_opt); + + if (rev->diffopt.pickaxe || rev->diffopt.filter || + DIFF_OPT_TST(&rev->diffopt, FOLLOW_RENAMES)) + rev->always_show_header = 0; + + if (source) + rev->show_source = 1; + + if (mailmap) { + rev->mailmap = xcalloc(1, sizeof(struct string_list)); + read_mailmap(rev->mailmap, NULL); + } + + if (rev->pretty_given && rev->commit_format == CMIT_FMT_RAW) { + /* + * "log --pretty=raw" is special; ignore UI oriented + * configuration variables such as decoration. + */ + if (!decoration_given) + decoration_style = 0; + if (!rev->abbrev_commit_given) + rev->abbrev_commit = 0; + } + + if (decoration_style) { + rev->show_decorations = 1; + load_ref_decorations(decoration_style); + } + + if (rev->line_level_traverse) + line_log_init(rev, line_cb.prefix, &line_cb.args); + + setup_pager(); +} + +static void cmd_log_init(int argc, const char **argv, const char *prefix, + struct rev_info *rev, struct setup_revision_opt *opt) +{ + cmd_log_init_defaults(rev); + cmd_log_init_finish(argc, argv, prefix, rev, opt); +} + +/* + * This gives a rough estimate for how many commits we + * will print out in the list. + */ +static int estimate_commit_count(struct rev_info *rev, struct commit_list *list) +{ + int n = 0; + + while (list) { + struct commit *commit = list->item; + unsigned int flags = commit->object.flags; + list = list->next; + if (!(flags & (TREESAME | UNINTERESTING))) + n++; + } + return n; +} + +static void show_early_header(struct rev_info *rev, const char *stage, int nr) +{ + if (rev->shown_one) { + rev->shown_one = 0; + if (rev->commit_format != CMIT_FMT_ONELINE) + putchar(rev->diffopt.line_termination); + } + fprintf(rev->diffopt.file, _("Final output: %d %s\n"), nr, stage); +} + +static struct itimerval early_output_timer; + +static void log_show_early(struct rev_info *revs, struct commit_list *list) +{ + int i = revs->early_output, close_file = revs->diffopt.close_file; + int show_header = 1; + + revs->diffopt.close_file = 0; + sort_in_topological_order(&list, revs->sort_order); + while (list && i) { + struct commit *commit = list->item; + switch (simplify_commit(revs, commit)) { + case commit_show: + if (show_header) { + int n = estimate_commit_count(revs, list); + show_early_header(revs, "incomplete", n); + show_header = 0; + } + log_tree_commit(revs, commit); + i--; + break; + case commit_ignore: + break; + case commit_error: + if (close_file) + fclose(revs->diffopt.file); + return; + } + list = list->next; + } + + /* Did we already get enough commits for the early output? */ + if (!i) { + if (close_file) + fclose(revs->diffopt.file); + return; + } + + /* + * ..if no, then repeat it twice a second until we + * do. + * + * NOTE! We don't use "it_interval", because if the + * reader isn't listening, we want our output to be + * throttled by the writing, and not have the timer + * trigger every second even if we're blocked on a + * reader! + */ + early_output_timer.it_value.tv_sec = 0; + early_output_timer.it_value.tv_usec = 500000; + setitimer(ITIMER_REAL, &early_output_timer, NULL); +} + +static void early_output(int signal) +{ + show_early_output = log_show_early; +} + +static void setup_early_output(struct rev_info *rev) +{ + struct sigaction sa; + + /* + * Set up the signal handler, minimally intrusively: + * we only set a single volatile integer word (not + * using sigatomic_t - trying to avoid unnecessary + * system dependencies and headers), and using + * SA_RESTART. + */ + memset(&sa, 0, sizeof(sa)); + sa.sa_handler = early_output; + sigemptyset(&sa.sa_mask); + sa.sa_flags = SA_RESTART; + sigaction(SIGALRM, &sa, NULL); + + /* + * If we can get the whole output in less than a + * tenth of a second, don't even bother doing the + * early-output thing.. + * + * This is a one-time-only trigger. + */ + early_output_timer.it_value.tv_sec = 0; + early_output_timer.it_value.tv_usec = 100000; + setitimer(ITIMER_REAL, &early_output_timer, NULL); +} + +static void finish_early_output(struct rev_info *rev) +{ + int n = estimate_commit_count(rev, rev->commits); + signal(SIGALRM, SIG_IGN); + show_early_header(rev, "done", n); +} + +static int cmd_log_walk(struct rev_info *rev) +{ + struct commit *commit; + int saved_nrl = 0; + int saved_dcctc = 0, close_file = rev->diffopt.close_file; + + if (rev->early_output) + setup_early_output(rev); + + if (prepare_revision_walk(rev)) + die(_("revision walk setup failed")); + + if (rev->early_output) + finish_early_output(rev); + + /* + * For --check and --exit-code, the exit code is based on CHECK_FAILED + * and HAS_CHANGES being accumulated in rev->diffopt, so be careful to + * retain that state information if replacing rev->diffopt in this loop + */ + rev->diffopt.close_file = 0; + while ((commit = get_revision(rev)) != NULL) { + if (!log_tree_commit(rev, commit) && rev->max_count >= 0) + /* + * We decremented max_count in get_revision, + * but we didn't actually show the commit. + */ + rev->max_count++; + if (!rev->reflog_info) { + /* we allow cycles in reflog ancestry */ + free_commit_buffer(commit); + } + free_commit_list(commit->parents); + commit->parents = NULL; + if (saved_nrl < rev->diffopt.needed_rename_limit) + saved_nrl = rev->diffopt.needed_rename_limit; + if (rev->diffopt.degraded_cc_to_c) + saved_dcctc = 1; + } + rev->diffopt.degraded_cc_to_c = saved_dcctc; + rev->diffopt.needed_rename_limit = saved_nrl; + if (close_file) + fclose(rev->diffopt.file); + + if (rev->diffopt.output_format & DIFF_FORMAT_CHECKDIFF && + DIFF_OPT_TST(&rev->diffopt, CHECK_FAILED)) { + return 02; + } + return diff_result_code(&rev->diffopt, 0); +} + +static int git_log_config(const char *var, const char *value, void *cb) +{ + const char *slot_name; + + if (!strcmp(var, "format.pretty")) + return git_config_string(&fmt_pretty, var, value); + if (!strcmp(var, "format.subjectprefix")) + return git_config_string(&fmt_patch_subject_prefix, var, value); + if (!strcmp(var, "log.abbrevcommit")) { + default_abbrev_commit = git_config_bool(var, value); + return 0; + } + if (!strcmp(var, "log.date")) + return git_config_string(&default_date_mode, var, value); + if (!strcmp(var, "log.decorate")) { + decoration_style = parse_decoration_style(var, value); + if (decoration_style < 0) + decoration_style = 0; /* maybe warn? */ + return 0; + } + if (!strcmp(var, "log.showroot")) { + default_show_root = git_config_bool(var, value); + return 0; + } + if (!strcmp(var, "log.follow")) { + default_follow = git_config_bool(var, value); + return 0; + } + if (skip_prefix(var, "color.decorate.", &slot_name)) + return parse_decorate_color_config(var, slot_name, value); + if (!strcmp(var, "log.mailmap")) { + use_mailmap_config = git_config_bool(var, value); + return 0; + } + if (!strcmp(var, "log.showsignature")) { + default_show_signature = git_config_bool(var, value); + return 0; + } + + if (grep_config(var, value, cb) < 0) + return -1; + if (git_gpg_config(var, value, cb) < 0) + return -1; + return git_diff_ui_config(var, value, cb); +} + +int cmd_whatchanged(int argc, const char **argv, const char *prefix) +{ + struct rev_info rev; + struct setup_revision_opt opt; + + init_log_defaults(); + git_config(git_log_config, NULL); + + init_revisions(&rev, prefix); + rev.diff = 1; + rev.simplify_history = 0; + memset(&opt, 0, sizeof(opt)); + opt.def = "HEAD"; + opt.revarg_opt = REVARG_COMMITTISH; + cmd_log_init(argc, argv, prefix, &rev, &opt); + if (!rev.diffopt.output_format) + rev.diffopt.output_format = DIFF_FORMAT_RAW; + return cmd_log_walk(&rev); +} + +static void show_tagger(char *buf, int len, struct rev_info *rev) +{ + struct strbuf out = STRBUF_INIT; + struct pretty_print_context pp = {0}; + + pp.fmt = rev->commit_format; + pp.date_mode = rev->date_mode; + pp_user_info(&pp, "Tagger", &out, buf, get_log_output_encoding()); + fprintf(rev->diffopt.file, "%s", out.buf); + strbuf_release(&out); +} + +static int show_blob_object(const struct object_id *oid, struct rev_info *rev, const char *obj_name) +{ + struct object_id oidc; + struct object_context obj_context; + char *buf; + unsigned long size; + + fflush(rev->diffopt.file); + if (!DIFF_OPT_TOUCHED(&rev->diffopt, ALLOW_TEXTCONV) || + !DIFF_OPT_TST(&rev->diffopt, ALLOW_TEXTCONV)) + return stream_blob_to_fd(1, oid, NULL, 0); + + if (get_sha1_with_context(obj_name, 0, oidc.hash, &obj_context)) + die(_("Not a valid object name %s"), obj_name); + if (!obj_context.path[0] || + !textconv_object(obj_context.path, obj_context.mode, &oidc, 1, &buf, &size)) + return stream_blob_to_fd(1, oid, NULL, 0); + + if (!buf) + die(_("git show %s: bad file"), obj_name); + + write_or_die(1, buf, size); + return 0; +} + +static int show_tag_object(const struct object_id *oid, struct rev_info *rev) +{ + unsigned long size; + enum object_type type; + char *buf = read_sha1_file(oid->hash, &type, &size); + int offset = 0; + + if (!buf) + return error(_("Could not read object %s"), oid_to_hex(oid)); + + assert(type == OBJ_TAG); + while (offset < size && buf[offset] != '\n') { + int new_offset = offset + 1; + while (new_offset < size && buf[new_offset++] != '\n') + ; /* do nothing */ + if (starts_with(buf + offset, "tagger ")) + show_tagger(buf + offset + 7, + new_offset - offset - 7, rev); + offset = new_offset; + } + + if (offset < size) + fwrite(buf + offset, size - offset, 1, rev->diffopt.file); + free(buf); + return 0; +} + +static int show_tree_object(const unsigned char *sha1, + struct strbuf *base, + const char *pathname, unsigned mode, int stage, void *context) +{ + FILE *file = context; + fprintf(file, "%s%s\n", pathname, S_ISDIR(mode) ? "/" : ""); + return 0; +} + +static void show_setup_revisions_tweak(struct rev_info *rev, + struct setup_revision_opt *opt) +{ + if (rev->ignore_merges) { + /* There was no "-m" on the command line */ + rev->ignore_merges = 0; + if (!rev->first_parent_only && !rev->combine_merges) { + /* No "--first-parent", "-c", or "--cc" */ + rev->combine_merges = 1; + rev->dense_combined_merges = 1; + } + } + if (!rev->diffopt.output_format) + rev->diffopt.output_format = DIFF_FORMAT_PATCH; +} + +int cmd_show(int argc, const char **argv, const char *prefix) +{ + struct rev_info rev; + struct object_array_entry *objects; + struct setup_revision_opt opt; + struct pathspec match_all; + int i, count, ret = 0; + + init_log_defaults(); + git_config(git_log_config, NULL); + + memset(&match_all, 0, sizeof(match_all)); + init_revisions(&rev, prefix); + rev.diff = 1; + rev.always_show_header = 1; + rev.no_walk = REVISION_WALK_NO_WALK_SORTED; + rev.diffopt.stat_width = -1; /* Scale to real terminal size */ + + memset(&opt, 0, sizeof(opt)); + opt.def = "HEAD"; + opt.tweak = show_setup_revisions_tweak; + cmd_log_init(argc, argv, prefix, &rev, &opt); + + if (!rev.no_walk) + return cmd_log_walk(&rev); + + count = rev.pending.nr; + objects = rev.pending.objects; + for (i = 0; i < count && !ret; i++) { + struct object *o = objects[i].item; + const char *name = objects[i].name; + switch (o->type) { + case OBJ_BLOB: + ret = show_blob_object(&o->oid, &rev, name); + break; + case OBJ_TAG: { + struct tag *t = (struct tag *)o; + + if (rev.shown_one) + putchar('\n'); + fprintf(rev.diffopt.file, "%stag %s%s\n", + diff_get_color_opt(&rev.diffopt, DIFF_COMMIT), + t->tag, + diff_get_color_opt(&rev.diffopt, DIFF_RESET)); + ret = show_tag_object(&o->oid, &rev); + rev.shown_one = 1; + if (ret) + break; + o = parse_object(t->tagged->oid.hash); + if (!o) + ret = error(_("Could not read object %s"), + oid_to_hex(&t->tagged->oid)); + objects[i].item = o; + i--; + break; + } + case OBJ_TREE: + if (rev.shown_one) + putchar('\n'); + fprintf(rev.diffopt.file, "%stree %s%s\n\n", + diff_get_color_opt(&rev.diffopt, DIFF_COMMIT), + name, + diff_get_color_opt(&rev.diffopt, DIFF_RESET)); + read_tree_recursive((struct tree *)o, "", 0, 0, &match_all, + show_tree_object, rev.diffopt.file); + rev.shown_one = 1; + break; + case OBJ_COMMIT: + rev.pending.nr = rev.pending.alloc = 0; + rev.pending.objects = NULL; + add_object_array(o, name, &rev.pending); + ret = cmd_log_walk(&rev); + break; + default: + ret = error(_("Unknown type: %d"), o->type); + } + } + free(objects); + return ret; +} + +/* + * This is equivalent to "git log -g --abbrev-commit --pretty=oneline" + */ +int cmd_log_reflog(int argc, const char **argv, const char *prefix) +{ + struct rev_info rev; + struct setup_revision_opt opt; + + init_log_defaults(); + git_config(git_log_config, NULL); + + init_revisions(&rev, prefix); + init_reflog_walk(&rev.reflog_info); + rev.verbose_header = 1; + memset(&opt, 0, sizeof(opt)); + opt.def = "HEAD"; + cmd_log_init_defaults(&rev); + rev.abbrev_commit = 1; + rev.commit_format = CMIT_FMT_ONELINE; + rev.use_terminator = 1; + rev.always_show_header = 1; + cmd_log_init_finish(argc, argv, prefix, &rev, &opt); + + return cmd_log_walk(&rev); +} + +static void log_setup_revisions_tweak(struct rev_info *rev, + struct setup_revision_opt *opt) +{ + if (DIFF_OPT_TST(&rev->diffopt, DEFAULT_FOLLOW_RENAMES) && + rev->prune_data.nr == 1) + DIFF_OPT_SET(&rev->diffopt, FOLLOW_RENAMES); + + /* Turn --cc/-c into -p --cc/-c when -p was not given */ + if (!rev->diffopt.output_format && rev->combine_merges) + rev->diffopt.output_format = DIFF_FORMAT_PATCH; + + /* Turn -m on when --cc/-c was given */ + if (rev->combine_merges) + rev->ignore_merges = 0; +} + +int cmd_log(int argc, const char **argv, const char *prefix) +{ + struct rev_info rev; + struct setup_revision_opt opt; + + init_log_defaults(); + git_config(git_log_config, NULL); + + init_revisions(&rev, prefix); + rev.always_show_header = 1; + memset(&opt, 0, sizeof(opt)); + opt.def = "HEAD"; + opt.revarg_opt = REVARG_COMMITTISH; + opt.tweak = log_setup_revisions_tweak; + cmd_log_init(argc, argv, prefix, &rev, &opt); + return cmd_log_walk(&rev); +} + +/* format-patch */ + +static const char *fmt_patch_suffix = ".patch"; +static int numbered = 0; +static int auto_number = 1; + +static char *default_attach = NULL; + +static struct string_list extra_hdr = STRING_LIST_INIT_NODUP; +static struct string_list extra_to = STRING_LIST_INIT_NODUP; +static struct string_list extra_cc = STRING_LIST_INIT_NODUP; + +static void add_header(const char *value) +{ + struct string_list_item *item; + int len = strlen(value); + while (len && value[len - 1] == '\n') + len--; + + if (!strncasecmp(value, "to: ", 4)) { + item = string_list_append(&extra_to, value + 4); + len -= 4; + } else if (!strncasecmp(value, "cc: ", 4)) { + item = string_list_append(&extra_cc, value + 4); + len -= 4; + } else { + item = string_list_append(&extra_hdr, value); + } + + item->string[len] = '\0'; +} + +#define THREAD_SHALLOW 1 +#define THREAD_DEEP 2 +static int thread; +static int do_signoff; +static int base_auto; +static char *from; +static const char *signature = git_version_string; +static const char *signature_file; +static int config_cover_letter; +static const char *config_output_directory; + +enum { + COVER_UNSET, + COVER_OFF, + COVER_ON, + COVER_AUTO +}; + +static int git_format_config(const char *var, const char *value, void *cb) +{ + if (!strcmp(var, "format.headers")) { + if (!value) + die(_("format.headers without value")); + add_header(value); + return 0; + } + if (!strcmp(var, "format.suffix")) + return git_config_string(&fmt_patch_suffix, var, value); + if (!strcmp(var, "format.to")) { + if (!value) + return config_error_nonbool(var); + string_list_append(&extra_to, value); + return 0; + } + if (!strcmp(var, "format.cc")) { + if (!value) + return config_error_nonbool(var); + string_list_append(&extra_cc, value); + return 0; + } + if (!strcmp(var, "diff.color") || !strcmp(var, "color.diff") || + !strcmp(var, "color.ui") || !strcmp(var, "diff.submodule")) { + return 0; + } + if (!strcmp(var, "format.numbered")) { + if (value && !strcasecmp(value, "auto")) { + auto_number = 1; + return 0; + } + numbered = git_config_bool(var, value); + auto_number = auto_number && numbered; + return 0; + } + if (!strcmp(var, "format.attach")) { + if (value && *value) + default_attach = xstrdup(value); + else + default_attach = xstrdup(git_version_string); + return 0; + } + if (!strcmp(var, "format.thread")) { + if (value && !strcasecmp(value, "deep")) { + thread = THREAD_DEEP; + return 0; + } + if (value && !strcasecmp(value, "shallow")) { + thread = THREAD_SHALLOW; + return 0; + } + thread = git_config_bool(var, value) && THREAD_SHALLOW; + return 0; + } + if (!strcmp(var, "format.signoff")) { + do_signoff = git_config_bool(var, value); + return 0; + } + if (!strcmp(var, "format.signature")) + return git_config_string(&signature, var, value); + if (!strcmp(var, "format.signaturefile")) + return git_config_pathname(&signature_file, var, value); + if (!strcmp(var, "format.coverletter")) { + if (value && !strcasecmp(value, "auto")) { + config_cover_letter = COVER_AUTO; + return 0; + } + config_cover_letter = git_config_bool(var, value) ? COVER_ON : COVER_OFF; + return 0; + } + if (!strcmp(var, "format.outputdirectory")) + return git_config_string(&config_output_directory, var, value); + if (!strcmp(var, "format.useautobase")) { + base_auto = git_config_bool(var, value); + return 0; + } + if (!strcmp(var, "format.from")) { + int b = git_config_maybe_bool(var, value); + free(from); + if (b < 0) + from = xstrdup(value); + else if (b) + from = xstrdup(git_committer_info(IDENT_NO_DATE)); + else + from = NULL; + return 0; + } + + return git_log_config(var, value, cb); +} + +static const char *output_directory = NULL; +static int outdir_offset; + +static int open_next_file(struct commit *commit, const char *subject, + struct rev_info *rev, int quiet) +{ + struct strbuf filename = STRBUF_INIT; + int suffix_len = strlen(rev->patch_suffix) + 1; + + if (output_directory) { + strbuf_addstr(&filename, output_directory); + if (filename.len >= + PATH_MAX - FORMAT_PATCH_NAME_MAX - suffix_len) + return error(_("name of output directory is too long")); + strbuf_complete(&filename, '/'); + } + + if (rev->numbered_files) + strbuf_addf(&filename, "%d", rev->nr); + else if (commit) + fmt_output_commit(&filename, commit, rev); + else + fmt_output_subject(&filename, subject, rev); + + if (!quiet) + printf("%s\n", filename.buf + outdir_offset); + + if ((rev->diffopt.file = fopen(filename.buf, "w")) == NULL) + return error(_("Cannot open patch file %s"), filename.buf); + + strbuf_release(&filename); + return 0; +} + +static void get_patch_ids(struct rev_info *rev, struct patch_ids *ids) +{ + struct rev_info check_rev; + struct commit *commit, *c1, *c2; + struct object *o1, *o2; + unsigned flags1, flags2; + + if (rev->pending.nr != 2) + die(_("Need exactly one range.")); + + o1 = rev->pending.objects[0].item; + o2 = rev->pending.objects[1].item; + flags1 = o1->flags; + flags2 = o2->flags; + c1 = lookup_commit_reference(o1->oid.hash); + c2 = lookup_commit_reference(o2->oid.hash); + + if ((flags1 & UNINTERESTING) == (flags2 & UNINTERESTING)) + die(_("Not a range.")); + + init_patch_ids(ids); + + /* given a range a..b get all patch ids for b..a */ + init_revisions(&check_rev, rev->prefix); + check_rev.max_parents = 1; + o1->flags ^= UNINTERESTING; + o2->flags ^= UNINTERESTING; + add_pending_object(&check_rev, o1, "o1"); + add_pending_object(&check_rev, o2, "o2"); + if (prepare_revision_walk(&check_rev)) + die(_("revision walk setup failed")); + + while ((commit = get_revision(&check_rev)) != NULL) { + add_commit_patch_id(commit, ids); + } + + /* reset for next revision walk */ + clear_commit_marks(c1, SEEN | UNINTERESTING | SHOWN | ADDED); + clear_commit_marks(c2, SEEN | UNINTERESTING | SHOWN | ADDED); + o1->flags = flags1; + o2->flags = flags2; +} + +static void gen_message_id(struct rev_info *info, char *base) +{ + struct strbuf buf = STRBUF_INIT; + strbuf_addf(&buf, "%s.%lu.git.%s", base, + (unsigned long) time(NULL), + git_committer_info(IDENT_NO_NAME|IDENT_NO_DATE|IDENT_STRICT)); + info->message_id = strbuf_detach(&buf, NULL); +} + +static void print_signature(FILE *file) +{ + if (!signature || !*signature) + return; + + fprintf(file, "-- \n%s", signature); + if (signature[strlen(signature)-1] != '\n') + putc('\n', file); + putc('\n', file); +} + +static void add_branch_description(struct strbuf *buf, const char *branch_name) +{ + struct strbuf desc = STRBUF_INIT; + if (!branch_name || !*branch_name) + return; + read_branch_desc(&desc, branch_name); + if (desc.len) { + strbuf_addch(buf, '\n'); + strbuf_addbuf(buf, &desc); + strbuf_addch(buf, '\n'); + } + strbuf_release(&desc); +} + +static char *find_branch_name(struct rev_info *rev) +{ + int i, positive = -1; + struct object_id branch_oid; + const struct object_id *tip_oid; + const char *ref, *v; + char *full_ref, *branch = NULL; + + for (i = 0; i < rev->cmdline.nr; i++) { + if (rev->cmdline.rev[i].flags & UNINTERESTING) + continue; + if (positive < 0) + positive = i; + else + return NULL; + } + if (positive < 0) + return NULL; + ref = rev->cmdline.rev[positive].name; + tip_oid = &rev->cmdline.rev[positive].item->oid; + if (dwim_ref(ref, strlen(ref), branch_oid.hash, &full_ref) && + skip_prefix(full_ref, "refs/heads/", &v) && + !oidcmp(tip_oid, &branch_oid)) + branch = xstrdup(v); + free(full_ref); + return branch; +} + +static void make_cover_letter(struct rev_info *rev, int use_stdout, + struct commit *origin, + int nr, struct commit **list, + const char *branch_name, + int quiet) +{ + const char *committer; + const char *body = "*** SUBJECT HERE ***\n\n*** BLURB HERE ***\n"; + const char *msg; + struct shortlog log; + struct strbuf sb = STRBUF_INIT; + int i; + const char *encoding = "UTF-8"; + struct diff_options opts; + int need_8bit_cte = 0; + struct pretty_print_context pp = {0}; + struct commit *head = list[0]; + + if (!cmit_fmt_is_mail(rev->commit_format)) + die(_("Cover letter needs email format")); + + committer = git_committer_info(0); + + if (!use_stdout && + open_next_file(NULL, rev->numbered_files ? NULL : "cover-letter", rev, quiet)) + return; + + log_write_email_headers(rev, head, &pp.subject, &pp.after_subject, + &need_8bit_cte); + + for (i = 0; !need_8bit_cte && i < nr; i++) { + const char *buf = get_commit_buffer(list[i], NULL); + if (has_non_ascii(buf)) + need_8bit_cte = 1; + unuse_commit_buffer(list[i], buf); + } + + if (!branch_name) + branch_name = find_branch_name(rev); + + msg = body; + pp.fmt = CMIT_FMT_EMAIL; + pp.date_mode.type = DATE_RFC2822; + pp_user_info(&pp, NULL, &sb, committer, encoding); + pp_title_line(&pp, &msg, &sb, encoding, need_8bit_cte); + pp_remainder(&pp, &msg, &sb, 0); + add_branch_description(&sb, branch_name); + fprintf(rev->diffopt.file, "%s\n", sb.buf); + + strbuf_release(&sb); + + shortlog_init(&log); + log.wrap_lines = 1; + log.wrap = 72; + log.in1 = 2; + log.in2 = 4; + log.file = rev->diffopt.file; + for (i = 0; i < nr; i++) + shortlog_add_commit(&log, list[i]); + + shortlog_output(&log); + + /* + * We can only do diffstat with a unique reference point + */ + if (!origin) + return; + + memcpy(&opts, &rev->diffopt, sizeof(opts)); + opts.output_format = DIFF_FORMAT_SUMMARY | DIFF_FORMAT_DIFFSTAT; + + diff_setup_done(&opts); + + diff_tree_sha1(origin->tree->object.oid.hash, + head->tree->object.oid.hash, + "", &opts); + diffcore_std(&opts); + diff_flush(&opts); + + fprintf(rev->diffopt.file, "\n"); +} + +static const char *clean_message_id(const char *msg_id) +{ + char ch; + const char *a, *z, *m; + + m = msg_id; + while ((ch = *m) && (isspace(ch) || (ch == '<'))) + m++; + a = m; + z = NULL; + while ((ch = *m)) { + if (!isspace(ch) && (ch != '>')) + z = m; + m++; + } + if (!z) + die(_("insane in-reply-to: %s"), msg_id); + if (++z == m) + return a; + return xmemdupz(a, z - a); +} + +static const char *set_outdir(const char *prefix, const char *output_directory) +{ + if (output_directory && is_absolute_path(output_directory)) + return output_directory; + + if (!prefix || !*prefix) { + if (output_directory) + return output_directory; + /* The user did not explicitly ask for "./" */ + outdir_offset = 2; + return "./"; + } + + outdir_offset = strlen(prefix); + if (!output_directory) + return prefix; + + return xstrdup(prefix_filename(prefix, outdir_offset, + output_directory)); +} + +static const char * const builtin_format_patch_usage[] = { + N_("git format-patch [<options>] [<since> | <revision-range>]"), + NULL +}; + +static int keep_subject = 0; + +static int keep_callback(const struct option *opt, const char *arg, int unset) +{ + ((struct rev_info *)opt->value)->total = -1; + keep_subject = 1; + return 0; +} + +static int subject_prefix = 0; + +static int subject_prefix_callback(const struct option *opt, const char *arg, + int unset) +{ + subject_prefix = 1; + ((struct rev_info *)opt->value)->subject_prefix = arg; + return 0; +} + +static int rfc_callback(const struct option *opt, const char *arg, int unset) +{ + return subject_prefix_callback(opt, "RFC PATCH", unset); +} + +static int numbered_cmdline_opt = 0; + +static int numbered_callback(const struct option *opt, const char *arg, + int unset) +{ + *(int *)opt->value = numbered_cmdline_opt = unset ? 0 : 1; + if (unset) + auto_number = 0; + return 0; +} + +static int no_numbered_callback(const struct option *opt, const char *arg, + int unset) +{ + return numbered_callback(opt, arg, 1); +} + +static int output_directory_callback(const struct option *opt, const char *arg, + int unset) +{ + const char **dir = (const char **)opt->value; + if (*dir) + die(_("Two output directories?")); + *dir = arg; + return 0; +} + +static int thread_callback(const struct option *opt, const char *arg, int unset) +{ + int *thread = (int *)opt->value; + if (unset) + *thread = 0; + else if (!arg || !strcmp(arg, "shallow")) + *thread = THREAD_SHALLOW; + else if (!strcmp(arg, "deep")) + *thread = THREAD_DEEP; + else + return 1; + return 0; +} + +static int attach_callback(const struct option *opt, const char *arg, int unset) +{ + struct rev_info *rev = (struct rev_info *)opt->value; + if (unset) + rev->mime_boundary = NULL; + else if (arg) + rev->mime_boundary = arg; + else + rev->mime_boundary = git_version_string; + rev->no_inline = unset ? 0 : 1; + return 0; +} + +static int inline_callback(const struct option *opt, const char *arg, int unset) +{ + struct rev_info *rev = (struct rev_info *)opt->value; + if (unset) + rev->mime_boundary = NULL; + else if (arg) + rev->mime_boundary = arg; + else + rev->mime_boundary = git_version_string; + rev->no_inline = 0; + return 0; +} + +static int header_callback(const struct option *opt, const char *arg, int unset) +{ + if (unset) { + string_list_clear(&extra_hdr, 0); + string_list_clear(&extra_to, 0); + string_list_clear(&extra_cc, 0); + } else { + add_header(arg); + } + return 0; +} + +static int to_callback(const struct option *opt, const char *arg, int unset) +{ + if (unset) + string_list_clear(&extra_to, 0); + else + string_list_append(&extra_to, arg); + return 0; +} + +static int cc_callback(const struct option *opt, const char *arg, int unset) +{ + if (unset) + string_list_clear(&extra_cc, 0); + else + string_list_append(&extra_cc, arg); + return 0; +} + +static int from_callback(const struct option *opt, const char *arg, int unset) +{ + char **from = opt->value; + + free(*from); + + if (unset) + *from = NULL; + else if (arg) + *from = xstrdup(arg); + else + *from = xstrdup(git_committer_info(IDENT_NO_DATE)); + return 0; +} + +struct base_tree_info { + struct object_id base_commit; + int nr_patch_id, alloc_patch_id; + struct object_id *patch_id; +}; + +static struct commit *get_base_commit(const char *base_commit, + struct commit **list, + int total) +{ + struct commit *base = NULL; + struct commit **rev; + int i = 0, rev_nr = 0; + + if (base_commit && strcmp(base_commit, "auto")) { + base = lookup_commit_reference_by_name(base_commit); + if (!base) + die(_("Unknown commit %s"), base_commit); + } else if ((base_commit && !strcmp(base_commit, "auto")) || base_auto) { + struct branch *curr_branch = branch_get(NULL); + const char *upstream = branch_get_upstream(curr_branch, NULL); + if (upstream) { + struct commit_list *base_list; + struct commit *commit; + struct object_id oid; + + if (get_oid(upstream, &oid)) + die(_("Failed to resolve '%s' as a valid ref."), upstream); + commit = lookup_commit_or_die(oid.hash, "upstream base"); + base_list = get_merge_bases_many(commit, total, list); + /* There should be one and only one merge base. */ + if (!base_list || base_list->next) + die(_("Could not find exact merge base.")); + base = base_list->item; + free_commit_list(base_list); + } else { + die(_("Failed to get upstream, if you want to record base commit automatically,\n" + "please use git branch --set-upstream-to to track a remote branch.\n" + "Or you could specify base commit by --base=<base-commit-id> manually.")); + } + } + + ALLOC_ARRAY(rev, total); + for (i = 0; i < total; i++) + rev[i] = list[i]; + + rev_nr = total; + /* + * Get merge base through pair-wise computations + * and store it in rev[0]. + */ + while (rev_nr > 1) { + for (i = 0; i < rev_nr / 2; i++) { + struct commit_list *merge_base; + merge_base = get_merge_bases(rev[2 * i], rev[2 * i + 1]); + if (!merge_base || merge_base->next) + die(_("Failed to find exact merge base")); + + rev[i] = merge_base->item; + } + + if (rev_nr % 2) + rev[i] = rev[2 * i]; + rev_nr = (rev_nr + 1) / 2; + } + + if (!in_merge_bases(base, rev[0])) + die(_("base commit should be the ancestor of revision list")); + + for (i = 0; i < total; i++) { + if (base == list[i]) + die(_("base commit shouldn't be in revision list")); + } + + free(rev); + return base; +} + +static void prepare_bases(struct base_tree_info *bases, + struct commit *base, + struct commit **list, + int total) +{ + struct commit *commit; + struct rev_info revs; + struct diff_options diffopt; + int i; + + if (!base) + return; + + diff_setup(&diffopt); + DIFF_OPT_SET(&diffopt, RECURSIVE); + diff_setup_done(&diffopt); + + oidcpy(&bases->base_commit, &base->object.oid); + + init_revisions(&revs, NULL); + revs.max_parents = 1; + revs.topo_order = 1; + for (i = 0; i < total; i++) { + list[i]->object.flags &= ~UNINTERESTING; + add_pending_object(&revs, &list[i]->object, "rev_list"); + list[i]->util = (void *)1; + } + base->object.flags |= UNINTERESTING; + add_pending_object(&revs, &base->object, "base"); + + if (prepare_revision_walk(&revs)) + die(_("revision walk setup failed")); + /* + * Traverse the commits list, get prerequisite patch ids + * and stuff them in bases structure. + */ + while ((commit = get_revision(&revs)) != NULL) { + struct object_id oid; + struct object_id *patch_id; + if (commit->util) + continue; + if (commit_patch_id(commit, &diffopt, oid.hash, 0)) + die(_("cannot get patch id")); + ALLOC_GROW(bases->patch_id, bases->nr_patch_id + 1, bases->alloc_patch_id); + patch_id = bases->patch_id + bases->nr_patch_id; + oidcpy(patch_id, &oid); + bases->nr_patch_id++; + } +} + +static void print_bases(struct base_tree_info *bases, FILE *file) +{ + int i; + + /* Only do this once, either for the cover or for the first one */ + if (is_null_oid(&bases->base_commit)) + return; + + /* Show the base commit */ + fprintf(file, "\nbase-commit: %s\n", oid_to_hex(&bases->base_commit)); + + /* Show the prerequisite patches */ + for (i = bases->nr_patch_id - 1; i >= 0; i--) + fprintf(file, "prerequisite-patch-id: %s\n", oid_to_hex(&bases->patch_id[i])); + + free(bases->patch_id); + bases->nr_patch_id = 0; + bases->alloc_patch_id = 0; + oidclr(&bases->base_commit); +} + +int cmd_format_patch(int argc, const char **argv, const char *prefix) +{ + struct commit *commit; + struct commit **list = NULL; + struct rev_info rev; + struct setup_revision_opt s_r_opt; + int nr = 0, total, i; + int use_stdout = 0; + int start_number = -1; + int just_numbers = 0; + int ignore_if_in_upstream = 0; + int cover_letter = -1; + int boundary_count = 0; + int no_binary_diff = 0; + int zero_commit = 0; + struct commit *origin = NULL; + const char *in_reply_to = NULL; + struct patch_ids ids; + struct strbuf buf = STRBUF_INIT; + int use_patch_format = 0; + int quiet = 0; + int reroll_count = -1; + char *branch_name = NULL; + char *base_commit = NULL; + struct base_tree_info bases; + + const struct option builtin_format_patch_options[] = { + { OPTION_CALLBACK, 'n', "numbered", &numbered, NULL, + N_("use [PATCH n/m] even with a single patch"), + PARSE_OPT_NOARG, numbered_callback }, + { OPTION_CALLBACK, 'N', "no-numbered", &numbered, NULL, + N_("use [PATCH] even with multiple patches"), + PARSE_OPT_NOARG, no_numbered_callback }, + OPT_BOOL('s', "signoff", &do_signoff, N_("add Signed-off-by:")), + OPT_BOOL(0, "stdout", &use_stdout, + N_("print patches to standard out")), + OPT_BOOL(0, "cover-letter", &cover_letter, + N_("generate a cover letter")), + OPT_BOOL(0, "numbered-files", &just_numbers, + N_("use simple number sequence for output file names")), + OPT_STRING(0, "suffix", &fmt_patch_suffix, N_("sfx"), + N_("use <sfx> instead of '.patch'")), + OPT_INTEGER(0, "start-number", &start_number, + N_("start numbering patches at <n> instead of 1")), + OPT_INTEGER('v', "reroll-count", &reroll_count, + N_("mark the series as Nth re-roll")), + { OPTION_CALLBACK, 0, "rfc", &rev, NULL, + N_("Use [RFC PATCH] instead of [PATCH]"), + PARSE_OPT_NOARG | PARSE_OPT_NONEG, rfc_callback }, + { OPTION_CALLBACK, 0, "subject-prefix", &rev, N_("prefix"), + N_("Use [<prefix>] instead of [PATCH]"), + PARSE_OPT_NONEG, subject_prefix_callback }, + { OPTION_CALLBACK, 'o', "output-directory", &output_directory, + N_("dir"), N_("store resulting files in <dir>"), + PARSE_OPT_NONEG, output_directory_callback }, + { OPTION_CALLBACK, 'k', "keep-subject", &rev, NULL, + N_("don't strip/add [PATCH]"), + PARSE_OPT_NOARG | PARSE_OPT_NONEG, keep_callback }, + OPT_BOOL(0, "no-binary", &no_binary_diff, + N_("don't output binary diffs")), + OPT_BOOL(0, "zero-commit", &zero_commit, + N_("output all-zero hash in From header")), + OPT_BOOL(0, "ignore-if-in-upstream", &ignore_if_in_upstream, + N_("don't include a patch matching a commit upstream")), + { OPTION_SET_INT, 'p', "no-stat", &use_patch_format, NULL, + N_("show patch format instead of default (patch + stat)"), + PARSE_OPT_NONEG | PARSE_OPT_NOARG, NULL, 1}, + OPT_GROUP(N_("Messaging")), + { OPTION_CALLBACK, 0, "add-header", NULL, N_("header"), + N_("add email header"), 0, header_callback }, + { OPTION_CALLBACK, 0, "to", NULL, N_("email"), N_("add To: header"), + 0, to_callback }, + { OPTION_CALLBACK, 0, "cc", NULL, N_("email"), N_("add Cc: header"), + 0, cc_callback }, + { OPTION_CALLBACK, 0, "from", &from, N_("ident"), + N_("set From address to <ident> (or committer ident if absent)"), + PARSE_OPT_OPTARG, from_callback }, + OPT_STRING(0, "in-reply-to", &in_reply_to, N_("message-id"), + N_("make first mail a reply to <message-id>")), + { OPTION_CALLBACK, 0, "attach", &rev, N_("boundary"), + N_("attach the patch"), PARSE_OPT_OPTARG, + attach_callback }, + { OPTION_CALLBACK, 0, "inline", &rev, N_("boundary"), + N_("inline the patch"), + PARSE_OPT_OPTARG | PARSE_OPT_NONEG, + inline_callback }, + { OPTION_CALLBACK, 0, "thread", &thread, N_("style"), + N_("enable message threading, styles: shallow, deep"), + PARSE_OPT_OPTARG, thread_callback }, + OPT_STRING(0, "signature", &signature, N_("signature"), + N_("add a signature")), + OPT_STRING(0, "base", &base_commit, N_("base-commit"), + N_("add prerequisite tree info to the patch series")), + OPT_FILENAME(0, "signature-file", &signature_file, + N_("add a signature from a file")), + OPT__QUIET(&quiet, N_("don't print the patch filenames")), + OPT_END() + }; + + extra_hdr.strdup_strings = 1; + extra_to.strdup_strings = 1; + extra_cc.strdup_strings = 1; + init_log_defaults(); + git_config(git_format_config, NULL); + init_revisions(&rev, prefix); + rev.commit_format = CMIT_FMT_EMAIL; + rev.expand_tabs_in_log_default = 0; + rev.verbose_header = 1; + rev.diff = 1; + rev.max_parents = 1; + DIFF_OPT_SET(&rev.diffopt, RECURSIVE); + rev.subject_prefix = fmt_patch_subject_prefix; + memset(&s_r_opt, 0, sizeof(s_r_opt)); + s_r_opt.def = "HEAD"; + s_r_opt.revarg_opt = REVARG_COMMITTISH; + + if (default_attach) { + rev.mime_boundary = default_attach; + rev.no_inline = 1; + } + + /* + * Parse the arguments before setup_revisions(), or something + * like "git format-patch -o a123 HEAD^.." may fail; a123 is + * possibly a valid SHA1. + */ + argc = parse_options(argc, argv, prefix, builtin_format_patch_options, + builtin_format_patch_usage, + PARSE_OPT_KEEP_ARGV0 | PARSE_OPT_KEEP_UNKNOWN | + PARSE_OPT_KEEP_DASHDASH); + + if (0 < reroll_count) { + struct strbuf sprefix = STRBUF_INIT; + strbuf_addf(&sprefix, "%s v%d", + rev.subject_prefix, reroll_count); + rev.reroll_count = reroll_count; + rev.subject_prefix = strbuf_detach(&sprefix, NULL); + } + + for (i = 0; i < extra_hdr.nr; i++) { + strbuf_addstr(&buf, extra_hdr.items[i].string); + strbuf_addch(&buf, '\n'); + } + + if (extra_to.nr) + strbuf_addstr(&buf, "To: "); + for (i = 0; i < extra_to.nr; i++) { + if (i) + strbuf_addstr(&buf, " "); + strbuf_addstr(&buf, extra_to.items[i].string); + if (i + 1 < extra_to.nr) + strbuf_addch(&buf, ','); + strbuf_addch(&buf, '\n'); + } + + if (extra_cc.nr) + strbuf_addstr(&buf, "Cc: "); + for (i = 0; i < extra_cc.nr; i++) { + if (i) + strbuf_addstr(&buf, " "); + strbuf_addstr(&buf, extra_cc.items[i].string); + if (i + 1 < extra_cc.nr) + strbuf_addch(&buf, ','); + strbuf_addch(&buf, '\n'); + } + + rev.extra_headers = strbuf_detach(&buf, NULL); + + if (from) { + if (split_ident_line(&rev.from_ident, from, strlen(from))) + die(_("invalid ident line: %s"), from); + } + + if (start_number < 0) + start_number = 1; + + /* + * If numbered is set solely due to format.numbered in config, + * and it would conflict with --keep-subject (-k) from the + * command line, reset "numbered". + */ + if (numbered && keep_subject && !numbered_cmdline_opt) + numbered = 0; + + if (numbered && keep_subject) + die (_("-n and -k are mutually exclusive.")); + if (keep_subject && subject_prefix) + die (_("--subject-prefix/--rfc and -k are mutually exclusive.")); + rev.preserve_subject = keep_subject; + + argc = setup_revisions(argc, argv, &rev, &s_r_opt); + if (argc > 1) + die (_("unrecognized argument: %s"), argv[1]); + + if (rev.diffopt.output_format & DIFF_FORMAT_NAME) + die(_("--name-only does not make sense")); + if (rev.diffopt.output_format & DIFF_FORMAT_NAME_STATUS) + die(_("--name-status does not make sense")); + if (rev.diffopt.output_format & DIFF_FORMAT_CHECKDIFF) + die(_("--check does not make sense")); + + if (!use_patch_format && + (!rev.diffopt.output_format || + rev.diffopt.output_format == DIFF_FORMAT_PATCH)) + rev.diffopt.output_format = DIFF_FORMAT_DIFFSTAT | DIFF_FORMAT_SUMMARY; + + /* Always generate a patch */ + rev.diffopt.output_format |= DIFF_FORMAT_PATCH; + + rev.zero_commit = zero_commit; + + if (!DIFF_OPT_TST(&rev.diffopt, TEXT) && !no_binary_diff) + DIFF_OPT_SET(&rev.diffopt, BINARY); + + if (rev.show_notes) + init_display_notes(&rev.notes_opt); + + if (!output_directory && !use_stdout) + output_directory = config_output_directory; + + if (!use_stdout) + output_directory = set_outdir(prefix, output_directory); + else + setup_pager(); + + if (output_directory) { + if (rev.diffopt.use_color != GIT_COLOR_ALWAYS) + rev.diffopt.use_color = GIT_COLOR_NEVER; + if (use_stdout) + die(_("standard output, or directory, which one?")); + if (mkdir(output_directory, 0777) < 0 && errno != EEXIST) + die_errno(_("Could not create directory '%s'"), + output_directory); + } + + if (rev.pending.nr == 1) { + int check_head = 0; + + if (rev.max_count < 0 && !rev.show_root_diff) { + /* + * This is traditional behaviour of "git format-patch + * origin" that prepares what the origin side still + * does not have. + */ + rev.pending.objects[0].item->flags |= UNINTERESTING; + add_head_to_pending(&rev); + check_head = 1; + } + /* + * Otherwise, it is "format-patch -22 HEAD", and/or + * "format-patch --root HEAD". The user wants + * get_revision() to do the usual traversal. + */ + + if (!strcmp(rev.pending.objects[0].name, "HEAD")) + check_head = 1; + + if (check_head) { + struct object_id oid; + const char *ref, *v; + ref = resolve_ref_unsafe("HEAD", RESOLVE_REF_READING, + oid.hash, NULL); + if (ref && skip_prefix(ref, "refs/heads/", &v)) + branch_name = xstrdup(v); + else + branch_name = xstrdup(""); /* no branch */ + } + } + + /* + * We cannot move this anywhere earlier because we do want to + * know if --root was given explicitly from the command line. + */ + rev.show_root_diff = 1; + + if (ignore_if_in_upstream) { + /* Don't say anything if head and upstream are the same. */ + if (rev.pending.nr == 2) { + struct object_array_entry *o = rev.pending.objects; + if (oidcmp(&o[0].item->oid, &o[1].item->oid) == 0) + return 0; + } + get_patch_ids(&rev, &ids); + } + + if (prepare_revision_walk(&rev)) + die(_("revision walk setup failed")); + rev.boundary = 1; + while ((commit = get_revision(&rev)) != NULL) { + if (commit->object.flags & BOUNDARY) { + boundary_count++; + origin = (boundary_count == 1) ? commit : NULL; + continue; + } + + if (ignore_if_in_upstream && has_commit_patch_id(commit, &ids)) + continue; + + nr++; + REALLOC_ARRAY(list, nr); + list[nr - 1] = commit; + } + if (nr == 0) + /* nothing to do */ + return 0; + total = nr; + if (cover_letter == -1) { + if (config_cover_letter == COVER_AUTO) + cover_letter = (total > 1); + else + cover_letter = (config_cover_letter == COVER_ON); + } + if (!keep_subject && auto_number && (total > 1 || cover_letter)) + numbered = 1; + if (numbered) + rev.total = total + start_number - 1; + + if (!signature) { + ; /* --no-signature inhibits all signatures */ + } else if (signature && signature != git_version_string) { + ; /* non-default signature already set */ + } else if (signature_file) { + struct strbuf buf = STRBUF_INIT; + + if (strbuf_read_file(&buf, signature_file, 128) < 0) + die_errno(_("unable to read signature file '%s'"), signature_file); + signature = strbuf_detach(&buf, NULL); + } + + memset(&bases, 0, sizeof(bases)); + if (base_commit || base_auto) { + struct commit *base = get_base_commit(base_commit, list, nr); + reset_revision_walk(); + prepare_bases(&bases, base, list, nr); + } + + if (in_reply_to || thread || cover_letter) + rev.ref_message_ids = xcalloc(1, sizeof(struct string_list)); + if (in_reply_to) { + const char *msgid = clean_message_id(in_reply_to); + string_list_append(rev.ref_message_ids, msgid); + } + rev.numbered_files = just_numbers; + rev.patch_suffix = fmt_patch_suffix; + if (cover_letter) { + if (thread) + gen_message_id(&rev, "cover"); + make_cover_letter(&rev, use_stdout, + origin, nr, list, branch_name, quiet); + print_bases(&bases, rev.diffopt.file); + print_signature(rev.diffopt.file); + total++; + start_number--; + } + rev.add_signoff = do_signoff; + while (0 <= --nr) { + int shown; + commit = list[nr]; + rev.nr = total - nr + (start_number - 1); + /* Make the second and subsequent mails replies to the first */ + if (thread) { + /* Have we already had a message ID? */ + if (rev.message_id) { + /* + * For deep threading: make every mail + * a reply to the previous one, no + * matter what other options are set. + * + * For shallow threading: + * + * Without --cover-letter and + * --in-reply-to, make every mail a + * reply to the one before. + * + * With --in-reply-to but no + * --cover-letter, make every mail a + * reply to the <reply-to>. + * + * With --cover-letter, make every + * mail but the cover letter a reply + * to the cover letter. The cover + * letter is a reply to the + * --in-reply-to, if specified. + */ + if (thread == THREAD_SHALLOW + && rev.ref_message_ids->nr > 0 + && (!cover_letter || rev.nr > 1)) + free(rev.message_id); + else + string_list_append(rev.ref_message_ids, + rev.message_id); + } + gen_message_id(&rev, oid_to_hex(&commit->object.oid)); + } + + if (!use_stdout && + open_next_file(rev.numbered_files ? NULL : commit, NULL, &rev, quiet)) + die(_("Failed to create output files")); + shown = log_tree_commit(&rev, commit); + free_commit_buffer(commit); + + /* We put one extra blank line between formatted + * patches and this flag is used by log-tree code + * to see if it needs to emit a LF before showing + * the log; when using one file per patch, we do + * not want the extra blank line. + */ + if (!use_stdout) + rev.shown_one = 0; + if (shown) { + print_bases(&bases, rev.diffopt.file); + if (rev.mime_boundary) + fprintf(rev.diffopt.file, "\n--%s%s--\n\n\n", + mime_boundary_leader, + rev.mime_boundary); + else + print_signature(rev.diffopt.file); + } + if (!use_stdout) + fclose(rev.diffopt.file); + } + free(list); + free(branch_name); + string_list_clear(&extra_to, 0); + string_list_clear(&extra_cc, 0); + string_list_clear(&extra_hdr, 0); + if (ignore_if_in_upstream) + free_patch_ids(&ids); + return 0; +} + +static int add_pending_commit(const char *arg, struct rev_info *revs, int flags) +{ + struct object_id oid; + if (get_oid(arg, &oid) == 0) { + struct commit *commit = lookup_commit_reference(oid.hash); + if (commit) { + commit->object.flags |= flags; + add_pending_object(revs, &commit->object, arg); + return 0; + } + } + return -1; +} + +static const char * const cherry_usage[] = { + N_("git cherry [-v] [<upstream> [<head> [<limit>]]]"), + NULL +}; + +static void print_commit(char sign, struct commit *commit, int verbose, + int abbrev, FILE *file) +{ + if (!verbose) { + fprintf(file, "%c %s\n", sign, + find_unique_abbrev(commit->object.oid.hash, abbrev)); + } else { + struct strbuf buf = STRBUF_INIT; + pp_commit_easy(CMIT_FMT_ONELINE, commit, &buf); + fprintf(file, "%c %s %s\n", sign, + find_unique_abbrev(commit->object.oid.hash, abbrev), + buf.buf); + strbuf_release(&buf); + } +} + +int cmd_cherry(int argc, const char **argv, const char *prefix) +{ + struct rev_info revs; + struct patch_ids ids; + struct commit *commit; + struct commit_list *list = NULL; + struct branch *current_branch; + const char *upstream; + const char *head = "HEAD"; + const char *limit = NULL; + int verbose = 0, abbrev = 0; + + struct option options[] = { + OPT__ABBREV(&abbrev), + OPT__VERBOSE(&verbose, N_("be verbose")), + OPT_END() + }; + + argc = parse_options(argc, argv, prefix, options, cherry_usage, 0); + + switch (argc) { + case 3: + limit = argv[2]; + /* FALLTHROUGH */ + case 2: + head = argv[1]; + /* FALLTHROUGH */ + case 1: + upstream = argv[0]; + break; + default: + current_branch = branch_get(NULL); + upstream = branch_get_upstream(current_branch, NULL); + if (!upstream) { + fprintf(stderr, _("Could not find a tracked" + " remote branch, please" + " specify <upstream> manually.\n")); + usage_with_options(cherry_usage, options); + } + } + + init_revisions(&revs, prefix); + revs.max_parents = 1; + + if (add_pending_commit(head, &revs, 0)) + die(_("Unknown commit %s"), head); + if (add_pending_commit(upstream, &revs, UNINTERESTING)) + die(_("Unknown commit %s"), upstream); + + /* Don't say anything if head and upstream are the same. */ + if (revs.pending.nr == 2) { + struct object_array_entry *o = revs.pending.objects; + if (oidcmp(&o[0].item->oid, &o[1].item->oid) == 0) + return 0; + } + + get_patch_ids(&revs, &ids); + + if (limit && add_pending_commit(limit, &revs, UNINTERESTING)) + die(_("Unknown commit %s"), limit); + + /* reverse the list of commits */ + if (prepare_revision_walk(&revs)) + die(_("revision walk setup failed")); + while ((commit = get_revision(&revs)) != NULL) { + commit_list_insert(commit, &list); + } + + while (list) { + char sign = '+'; + + commit = list->item; + if (has_commit_patch_id(commit, &ids)) + sign = '-'; + print_commit(sign, commit, verbose, abbrev, revs.diffopt.file); + list = list->next; + } + + free_patch_ids(&ids); + return 0; +} |