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-rw-r--r--builtin/log.c1661
1 files changed, 1661 insertions, 0 deletions
diff --git a/builtin/log.c b/builtin/log.c
new file mode 100644
index 0000000000..39e8836352
--- /dev/null
+++ b/builtin/log.c
@@ -0,0 +1,1661 @@
+/*
+ * Builtin "git log" and related commands (show, whatchanged)
+ *
+ * (C) Copyright 2006 Linus Torvalds
+ * 2006 Junio Hamano
+ */
+#include "cache.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 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")
+ N_(" or: 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;
+ 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 cmd_log_init_defaults(struct rev_info *rev)
+{
+ if (fmt_pretty)
+ get_commit_format(fmt_pretty, rev);
+ 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;
+ DIFF_OPT_SET(&rev->diffopt, ALLOW_TEXTCONV);
+
+ if (default_date_mode)
+ rev->date_mode = parse_date_format(default_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",
+ "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)
+ rev->always_show_header = 0;
+ if (DIFF_OPT_TST(&rev->diffopt, FOLLOW_RENAMES)) {
+ rev->always_show_header = 0;
+ if (rev->diffopt.pathspec.nr != 1)
+ usage("git logs can only follow renames on one pathname at a time");
+ }
+
+ 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);
+ }
+ printf(_("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;
+ int show_header = 1;
+
+ 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:
+ return;
+ }
+ list = list->next;
+ }
+
+ /* Did we already get enough commits for the early output? */
+ if (!i)
+ 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;
+
+ 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
+ */
+ 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->buffer = NULL;
+ }
+ 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 (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)
+{
+ 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 (starts_with(var, "color.decorate."))
+ return parse_decorate_color_config(var, 15, value);
+ if (!strcmp(var, "log.mailmap")) {
+ use_mailmap_config = 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_grep_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());
+ printf("%s", out.buf);
+ strbuf_release(&out);
+}
+
+static int show_blob_object(const unsigned char *sha1, struct rev_info *rev, const char *obj_name)
+{
+ unsigned char sha1c[20];
+ struct object_context obj_context;
+ char *buf;
+ unsigned long size;
+
+ fflush(stdout);
+ if (!DIFF_OPT_TOUCHED(&rev->diffopt, ALLOW_TEXTCONV) ||
+ !DIFF_OPT_TST(&rev->diffopt, ALLOW_TEXTCONV))
+ return stream_blob_to_fd(1, sha1, NULL, 0);
+
+ if (get_sha1_with_context(obj_name, 0, sha1c, &obj_context))
+ die("Not a valid object name %s", obj_name);
+ if (!obj_context.path[0] ||
+ !textconv_object(obj_context.path, obj_context.mode, sha1c, 1, &buf, &size))
+ return stream_blob_to_fd(1, sha1, 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 unsigned char *sha1, struct rev_info *rev)
+{
+ unsigned long size;
+ enum object_type type;
+ char *buf = read_sha1_file(sha1, &type, &size);
+ int offset = 0;
+
+ if (!buf)
+ return error(_("Could not read object %s"), sha1_to_hex(sha1));
+
+ 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, stdout);
+ free(buf);
+ return 0;
+}
+
+static int show_tree_object(const unsigned char *sha1,
+ const char *base, int baselen,
+ const char *pathname, unsigned mode, int stage, void *context)
+{
+ printf("%s%s\n", pathname, S_ISDIR(mode) ? "/" : "");
+ return 0;
+}
+
+static void show_rev_tweak_rev(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_grep_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_rev_tweak_rev;
+ 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->sha1, &rev, name);
+ break;
+ case OBJ_TAG: {
+ struct tag *t = (struct tag *)o;
+
+ if (rev.shown_one)
+ putchar('\n');
+ printf("%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->sha1, &rev);
+ rev.shown_one = 1;
+ if (ret)
+ break;
+ o = parse_object(t->tagged->sha1);
+ if (!o)
+ ret = error(_("Could not read object %s"),
+ sha1_to_hex(t->tagged->sha1));
+ objects[i].item = o;
+ i--;
+ break;
+ }
+ case OBJ_TREE:
+ if (rev.shown_one)
+ putchar('\n');
+ printf("%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, NULL);
+ 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_grep_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);
+}
+
+int cmd_log(int argc, const char **argv, const char *prefix)
+{
+ struct rev_info rev;
+ struct setup_revision_opt opt;
+
+ init_grep_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;
+ 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;
+static struct string_list extra_to;
+static struct string_list extra_cc;
+
+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 const char *signature = git_version_string;
+static int config_cover_letter;
+
+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")) {
+ 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.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;
+ }
+
+ return git_log_config(var, value, cb);
+}
+
+static FILE *realstdout = NULL;
+static const char *output_directory = NULL;
+static int outdir_offset;
+
+static int reopen_stdout(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"));
+ if (filename.buf[filename.len - 1] != '/')
+ strbuf_addch(&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)
+ fprintf(realstdout, "%s\n", filename.buf + outdir_offset);
+
+ if (freopen(filename.buf, "w", stdout) == 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;
+ struct object *o1, *o2;
+ unsigned flags1, flags2;
+
+ if (rev->pending.nr != 2)
+ die(_("Need exactly one range."));
+
+ o1 = rev->pending.objects[0].item;
+ flags1 = o1->flags;
+ o2 = rev->pending.objects[1].item;
+ flags2 = o2->flags;
+
+ 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((struct commit *)o1,
+ SEEN | UNINTERESTING | SHOWN | ADDED);
+ clear_commit_marks((struct commit *)o2,
+ 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(void)
+{
+ if (signature && *signature)
+ printf("-- \n%s\n\n", signature);
+}
+
+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_add(buf, desc.buf, desc.len);
+ strbuf_addch(buf, '\n');
+ }
+}
+
+static char *find_branch_name(struct rev_info *rev)
+{
+ int i, positive = -1;
+ unsigned char branch_sha1[20];
+ const unsigned char *tip_sha1;
+ const char *ref;
+ 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_sha1 = rev->cmdline.rev[positive].item->sha1;
+ if (dwim_ref(ref, strlen(ref), branch_sha1, &full_ref) &&
+ starts_with(full_ref, "refs/heads/") &&
+ !hashcmp(tip_sha1, branch_sha1))
+ branch = xstrdup(full_ref + strlen("refs/heads/"));
+ 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 (rev->commit_format != CMIT_FMT_EMAIL)
+ die(_("Cover letter needs email format"));
+
+ committer = git_committer_info(0);
+
+ if (!use_stdout &&
+ reopen_stdout(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++)
+ if (has_non_ascii(list[i]->buffer))
+ need_8bit_cte = 1;
+
+ if (!branch_name)
+ branch_name = find_branch_name(rev);
+
+ msg = body;
+ pp.fmt = CMIT_FMT_EMAIL;
+ pp.date_mode = 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);
+ printf("%s\n", sb.buf);
+
+ strbuf_release(&sb);
+
+ shortlog_init(&log);
+ log.wrap_lines = 1;
+ log.wrap = 72;
+ log.in1 = 2;
+ log.in2 = 4;
+ 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.sha1,
+ head->tree->object.sha1,
+ "", &opts);
+ diffcore_std(&opts);
+ diff_flush(&opts);
+
+ printf("\n");
+ print_signature();
+}
+
+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 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;
+}
+
+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;
+ 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 *from = NULL;
+ 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, "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, "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__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_grep_defaults();
+ git_config(git_format_config, NULL);
+ init_revisions(&rev, prefix);
+ rev.commit_format = CMIT_FMT_EMAIL;
+ 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 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;
+
+ 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 (!use_stdout)
+ output_directory = set_outdir(prefix, output_directory);
+ else
+ setup_pager();
+
+ if (output_directory) {
+ 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) {
+ unsigned char sha1[20];
+ const char *ref;
+ ref = resolve_ref_unsafe("HEAD", sha1, 1, NULL);
+ if (ref && starts_with(ref, "refs/heads/"))
+ branch_name = xstrdup(ref + strlen("refs/heads/"));
+ 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 (hashcmp(o[0].item->sha1, o[1].item->sha1) == 0)
+ return 0;
+ }
+ get_patch_ids(&rev, &ids);
+ }
+
+ if (!use_stdout)
+ realstdout = xfdopen(xdup(1), "w");
+
+ 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++;
+ list = xrealloc(list, nr * sizeof(list[0]));
+ list[nr - 1] = commit;
+ }
+ if (nr == 0)
+ /* nothing to do */
+ return 0;
+ total = nr;
+ if (!keep_subject && auto_number && total > 1)
+ numbered = 1;
+ if (numbered)
+ rev.total = total + start_number - 1;
+ if (cover_letter == -1) {
+ if (config_cover_letter == COVER_AUTO)
+ cover_letter = (total > 1);
+ else
+ cover_letter = (config_cover_letter == COVER_ON);
+ }
+
+ 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);
+ 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, sha1_to_hex(commit->object.sha1));
+ }
+
+ if (!use_stdout &&
+ reopen_stdout(rev.numbered_files ? NULL : commit, NULL, &rev, quiet))
+ die(_("Failed to create output files"));
+ shown = log_tree_commit(&rev, commit);
+ free(commit->buffer);
+ commit->buffer = NULL;
+
+ /* 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) {
+ if (rev.mime_boundary)
+ printf("\n--%s%s--\n\n\n",
+ mime_boundary_leader,
+ rev.mime_boundary);
+ else
+ print_signature();
+ }
+ if (!use_stdout)
+ fclose(stdout);
+ }
+ 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)
+{
+ unsigned char sha1[20];
+ if (get_sha1(arg, sha1) == 0) {
+ struct commit *commit = lookup_commit_reference(sha1);
+ 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)
+{
+ if (!verbose) {
+ printf("%c %s\n", sign,
+ find_unique_abbrev(commit->object.sha1, abbrev));
+ } else {
+ struct strbuf buf = STRBUF_INIT;
+ pp_commit_easy(CMIT_FMT_ONELINE, commit, &buf);
+ printf("%c %s %s\n", sign,
+ find_unique_abbrev(commit->object.sha1, 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);
+ if (!current_branch || !current_branch->merge
+ || !current_branch->merge[0]
+ || !current_branch->merge[0]->dst) {
+ fprintf(stderr, _("Could not find a tracked"
+ " remote branch, please"
+ " specify <upstream> manually.\n"));
+ usage_with_options(cherry_usage, options);
+ }
+
+ upstream = current_branch->merge[0]->dst;
+ }
+
+ 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 (hashcmp(o[0].item->sha1, o[1].item->sha1) == 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);
+ list = list->next;
+ }
+
+ free_patch_ids(&ids);
+ return 0;
+}