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Make git-fmt-merge-msg a builtin

Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
This commit is contained in:
Johannes Schindelin 2006-07-03 17:18:43 +02:00 committed by Junio C Hamano
parent 280242d1cc
commit 00449f992b
5 changed files with 362 additions and 177 deletions

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@ -131,7 +131,7 @@ SCRIPT_SH = \
SCRIPT_PERL = \
git-archimport.perl git-cvsimport.perl git-relink.perl \
git-shortlog.perl git-fmt-merge-msg.perl git-rerere.perl \
git-shortlog.perl git-rerere.perl \
git-annotate.perl git-cvsserver.perl \
git-svnimport.perl git-mv.perl git-cvsexportcommit.perl \
git-send-email.perl
@ -173,7 +173,8 @@ BUILT_INS = git-log$X git-whatchanged$X git-show$X git-update-ref$X \
git-ls-files$X git-ls-tree$X git-get-tar-commit-id$X \
git-read-tree$X git-commit-tree$X git-write-tree$X \
git-apply$X git-show-branch$X git-diff-files$X git-update-index$X \
git-diff-index$X git-diff-stages$X git-diff-tree$X git-cat-file$X
git-diff-index$X git-diff-stages$X git-diff-tree$X git-cat-file$X \
git-fmt-merge-msg$X
# what 'all' will build and 'install' will install, in gitexecdir
ALL_PROGRAMS = $(PROGRAMS) $(SIMPLE_PROGRAMS) $(SCRIPTS)
@ -229,7 +230,7 @@ BUILTIN_OBJS = \
builtin-apply.o builtin-show-branch.o builtin-diff-files.o \
builtin-diff-index.o builtin-diff-stages.o builtin-diff-tree.o \
builtin-cat-file.o builtin-mailsplit.o builtin-stripspace.o \
builtin-update-ref.o
builtin-update-ref.o builtin-fmt-merge-msg.o
GITLIBS = $(LIB_FILE) $(XDIFF_LIB)
LIBS = $(GITLIBS) -lz

355
builtin-fmt-merge-msg.c Normal file
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@ -0,0 +1,355 @@
#include "cache.h"
#include "commit.h"
#include "diff.h"
#include "revision.h"
#include "tag.h"
static const char *fmt_merge_msg_usage =
"git-fmt-merge-msg [--summary] [--no-summary] [--file <file>]";
static int merge_summary = 0;
static int fmt_merge_msg_config(const char *key, const char *value)
{
if (!strcmp("merge.summary", key))
merge_summary = git_config_bool(key, value);
return 0;
}
struct list {
char **list;
void **payload;
unsigned nr, alloc;
};
static void append_to_list(struct list *list, char *value, void *payload)
{
if (list->nr == list->alloc) {
list->alloc += 32;
list->list = realloc(list->list, sizeof(char *) * list->alloc);
list->payload = realloc(list->payload,
sizeof(char *) * list->alloc);
}
list->payload[list->nr] = payload;
list->list[list->nr++] = value;
}
static int find_in_list(struct list *list, char *value)
{
int i;
for (i = 0; i < list->nr; i++)
if (!strcmp(list->list[i], value))
return i;
return -1;
}
static void free_list(struct list *list)
{
int i;
if (list->alloc == 0)
return;
for (i = 0; i < list->nr; i++) {
free(list->list[i]);
if (list->payload[i])
free(list->payload[i]);
}
free(list->list);
free(list->payload);
list->nr = list->alloc = 0;
}
struct src_data {
struct list branch, tag, r_branch, generic;
int head_status;
};
static struct list srcs = { NULL, NULL, 0, 0};
static struct list origins = { NULL, NULL, 0, 0};
static int handle_line(char *line)
{
int i, len = strlen(line);
unsigned char *sha1;
char *src, *origin;
struct src_data *src_data;
if (len < 43 || line[40] != '\t')
return 1;
if (!strncmp(line + 41, "not-for-merge", 13))
return 0;
if (line[41] != '\t')
return 2;
line[40] = 0;
sha1 = xmalloc(20);
i = get_sha1(line, sha1);
line[40] = '\t';
if (i)
return 3;
if (line[len - 1] == '\n')
line[len - 1] = 0;
line += 42;
src = strstr(line, " of ");
if (src) {
*src = 0;
src += 4;
} else
src = "HEAD";
i = find_in_list(&srcs, src);
if (i < 0) {
i = srcs.nr;
append_to_list(&srcs, strdup(src),
xcalloc(1, sizeof(struct src_data)));
}
src_data = srcs.payload[i];
if (!strncmp(line, "branch ", 7)) {
origin = strdup(line + 7);
append_to_list(&src_data->branch, origin, NULL);
src_data->head_status |= 2;
} else if (!strncmp(line, "tag ", 4)) {
origin = line;
append_to_list(&src_data->tag, strdup(origin + 4), NULL);
src_data->head_status |= 2;
} else if (!strncmp(line, "remote branch ", 14)) {
origin = strdup(line + 14);
append_to_list(&src_data->r_branch, origin, NULL);
src_data->head_status |= 2;
} else if (!strcmp(line, "HEAD")) {
origin = strdup(src);
src_data->head_status |= 1;
} else {
origin = strdup(src);
append_to_list(&src_data->generic, strdup(line), NULL);
src_data->head_status |= 2;
}
if (!strcmp(".", src) || !strcmp(src, origin)) {
int len = strlen(origin);
if (origin[0] == '\'' && origin[len - 1] == '\'') {
char *new_origin = malloc(len - 1);
memcpy(new_origin, origin + 1, len - 2);
new_origin[len - 1] = 0;
origin = new_origin;
} else
origin = strdup(origin);
} else {
char *new_origin = malloc(strlen(origin) + strlen(src) + 5);
sprintf(new_origin, "%s of %s", origin, src);
origin = new_origin;
}
append_to_list(&origins, origin, sha1);
return 0;
}
static void print_joined(const char *singular, const char *plural,
struct list *list)
{
if (list->nr == 0)
return;
if (list->nr == 1) {
printf("%s%s", singular, list->list[0]);
} else {
int i;
printf("%s", plural);
for (i = 0; i < list->nr - 1; i++)
printf("%s%s", i > 0 ? ", " : "", list->list[i]);
printf(" and %s", list->list[list->nr - 1]);
}
}
static void shortlog(const char *name, unsigned char *sha1,
struct commit *head, struct rev_info *rev, int limit)
{
int i, count = 0;
struct commit *commit;
struct object *branch;
struct list subjects = { NULL, NULL, 0, 0 };
int flags = UNINTERESTING | TREECHANGE | SEEN | SHOWN | ADDED;
branch = deref_tag(parse_object(sha1), sha1_to_hex(sha1), 40);
if (!branch || branch->type != TYPE_COMMIT)
return;
setup_revisions(0, NULL, rev, NULL);
rev->ignore_merges = 1;
add_pending_object(rev, branch, name);
add_pending_object(rev, &head->object, "^HEAD");
head->object.flags |= UNINTERESTING;
prepare_revision_walk(rev);
while ((commit = get_revision(rev)) != NULL) {
char *oneline, *bol, *eol;
/* ignore merges */
if (commit->parents && commit->parents->next)
continue;
count++;
if (subjects.nr > limit)
continue;
bol = strstr(commit->buffer, "\n\n");
if (!bol) {
append_to_list(&subjects, strdup(sha1_to_hex(
commit->object.sha1)),
NULL);
continue;
}
bol += 2;
eol = strchr(bol, '\n');
if (eol) {
int len = eol - bol;
oneline = malloc(len + 1);
memcpy(oneline, bol, len);
oneline[len] = 0;
} else
oneline = strdup(bol);
append_to_list(&subjects, oneline, NULL);
}
if (count > limit)
printf("\n* %s: (%d commits)\n", name, count);
else
printf("\n* %s:\n", name);
for (i = 0; i < subjects.nr; i++)
if (i >= limit)
printf(" ...\n");
else
printf(" %s\n", subjects.list[i]);
clear_commit_marks((struct commit *)branch, flags);
clear_commit_marks(head, flags);
free_commit_list(rev->commits);
rev->commits = NULL;
rev->pending.nr = 0;
free_list(&subjects);
}
int cmd_fmt_merge_msg(int argc, char **argv, char **envp)
{
int limit = 20, i = 0;
char line[1024];
FILE *in = stdin;
const char *sep = "";
unsigned char head_sha1[20];
const char *head, *current_branch;
git_config(fmt_merge_msg_config);
while (argc > 1) {
if (!strcmp(argv[1], "--summary"))
merge_summary = 1;
else if (!strcmp(argv[1], "--no-summary"))
merge_summary = 0;
else if (!strcmp(argv[1], "-F") || !strcmp(argv[1], "--file")) {
if (argc < 2)
die ("Which file?");
if (!strcmp(argv[2], "-"))
in = stdin;
else {
fclose(in);
in = fopen(argv[2], "r");
}
argc--; argv++;
} else
break;
argc--; argv++;
}
if (argc > 1)
usage(fmt_merge_msg_usage);
/* get current branch */
head = strdup(git_path("HEAD"));
current_branch = resolve_ref(head, head_sha1, 1);
current_branch += strlen(head) - 4;
free((char *)head);
if (!strncmp(current_branch, "refs/heads/", 11))
current_branch += 11;
while (fgets(line, sizeof(line), in)) {
i++;
if (line[0] == 0)
continue;
if (handle_line(line))
die ("Error in line %d: %s", i, line);
}
printf("Merge ");
for (i = 0; i < srcs.nr; i++) {
struct src_data *src_data = srcs.payload[i];
const char *subsep = "";
printf(sep);
sep = "; ";
if (src_data->head_status == 1) {
printf(srcs.list[i]);
continue;
}
if (src_data->head_status == 3) {
subsep = ", ";
printf("HEAD");
}
if (src_data->branch.nr) {
printf(subsep);
subsep = ", ";
print_joined("branch ", "branches ", &src_data->branch);
}
if (src_data->r_branch.nr) {
printf(subsep);
subsep = ", ";
print_joined("remote branch ", "remote branches ",
&src_data->r_branch);
}
if (src_data->tag.nr) {
printf(subsep);
subsep = ", ";
print_joined("tag ", "tags ", &src_data->tag);
}
if (src_data->generic.nr) {
printf(subsep);
print_joined("commit ", "commits ", &src_data->generic);
}
if (strcmp(".", srcs.list[i]))
printf(" of %s", srcs.list[i]);
}
if (!strcmp("master", current_branch))
putchar('\n');
else
printf(" into %s\n", current_branch);
if (merge_summary) {
struct commit *head;
struct rev_info rev;
head = lookup_commit(head_sha1);
init_revisions(&rev);
rev.commit_format = CMIT_FMT_ONELINE;
rev.ignore_merges = 1;
rev.limited = 1;
for (i = 0; i < origins.nr; i++)
shortlog(origins.list[i], origins.payload[i],
head, &rev, limit);
}
/* No cleanup yet; is standalone anyway */
return 0;
}

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@ -49,6 +49,7 @@ extern int cmd_cat_file(int argc, const char **argv, char **envp);
extern int cmd_rev_parse(int argc, const char **argv, char **envp);
extern int cmd_update_index(int argc, const char **argv, char **envp);
extern int cmd_update_ref(int argc, const char **argv, char **envp);
extern int cmd_fmt_merge_msg(int argc, const char **argv, char **envp);
extern int cmd_write_tree(int argc, const char **argv, char **envp);
extern int write_tree(unsigned char *sha1, int missing_ok, const char *prefix);

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@ -1,173 +0,0 @@
#!/usr/bin/perl -w
#
# Copyright (c) 2005 Junio C Hamano
#
# Read .git/FETCH_HEAD and make a human readable merge message
# by grouping branches and tags together to form a single line.
use strict;
my @src;
my %src;
sub andjoin {
my ($label, $labels, $stuff) = @_;
my $l = scalar @$stuff;
my $m = '';
if ($l == 0) {
return ();
}
if ($l == 1) {
$m = "$label$stuff->[0]";
}
else {
$m = ("$labels" .
join (', ', @{$stuff}[0..$l-2]) .
" and $stuff->[-1]");
}
return ($m);
}
sub repoconfig {
my ($val) = qx{git-repo-config --get merge.summary};
return $val;
}
sub current_branch {
my ($bra) = qx{git-symbolic-ref HEAD};
chomp($bra);
$bra =~ s|^refs/heads/||;
if ($bra ne 'master') {
$bra = " into $bra";
} else {
$bra = "";
}
return $bra;
}
sub shortlog {
my ($tip) = @_;
my @result;
foreach ( qx{git-log --no-merges --topo-order --pretty=oneline $tip ^HEAD} ) {
s/^[0-9a-f]{40}\s+//;
push @result, $_;
}
die "git-log failed\n" if $?;
return @result;
}
my @origin = ();
while (<>) {
my ($bname, $tname, $gname, $src, $sha1, $origin);
chomp;
s/^([0-9a-f]*) //;
$sha1 = $1;
next if (/^not-for-merge/);
s/^ //;
if (s/ of (.*)$//) {
$src = $1;
} else {
# Pulling HEAD
$src = $_;
$_ = 'HEAD';
}
if (! exists $src{$src}) {
push @src, $src;
$src{$src} = {
BRANCH => [],
TAG => [],
R_BRANCH => [],
GENERIC => [],
# &1 == has HEAD.
# &2 == has others.
HEAD_STATUS => 0,
};
}
if (/^branch (.*)$/) {
$origin = $1;
push @{$src{$src}{BRANCH}}, $1;
$src{$src}{HEAD_STATUS} |= 2;
}
elsif (/^tag (.*)$/) {
$origin = $_;
push @{$src{$src}{TAG}}, $1;
$src{$src}{HEAD_STATUS} |= 2;
}
elsif (/^remote branch (.*)$/) {
$origin = $1;
push @{$src{$src}{R_BRANCH}}, $1;
$src{$src}{HEAD_STATUS} |= 2;
}
elsif (/^HEAD$/) {
$origin = $src;
$src{$src}{HEAD_STATUS} |= 1;
}
else {
push @{$src{$src}{GENERIC}}, $_;
$src{$src}{HEAD_STATUS} |= 2;
$origin = $src;
}
if ($src eq '.' || $src eq $origin) {
$origin =~ s/^'(.*)'$/$1/;
push @origin, [$sha1, "$origin"];
}
else {
push @origin, [$sha1, "$origin of $src"];
}
}
my @msg;
for my $src (@src) {
if ($src{$src}{HEAD_STATUS} == 1) {
# Only HEAD is fetched, nothing else.
push @msg, $src;
next;
}
my @this;
if ($src{$src}{HEAD_STATUS} == 3) {
# HEAD is fetched among others.
push @this, andjoin('', '', ['HEAD']);
}
push @this, andjoin("branch ", "branches ",
$src{$src}{BRANCH});
push @this, andjoin("remote branch ", "remote branches ",
$src{$src}{R_BRANCH});
push @this, andjoin("tag ", "tags ",
$src{$src}{TAG});
push @this, andjoin("commit ", "commits ",
$src{$src}{GENERIC});
my $this = join(', ', @this);
if ($src ne '.') {
$this .= " of $src";
}
push @msg, $this;
}
my $into = current_branch();
print "Merge ", join("; ", @msg), $into, "\n";
if (!repoconfig) {
exit(0);
}
# We limit the merge message to the latst 20 or so per each branch.
my $limit = 20;
for (@origin) {
my ($sha1, $name) = @$_;
my @log = shortlog($sha1);
if ($limit + 1 <= @log) {
print "\n* $name: (" . scalar(@log) . " commits)\n";
}
else {
print "\n* $name:\n";
}
my $cnt = 0;
for my $log (@log) {
if ($limit < ++$cnt) {
print " ...\n";
last;
}
print " $log";
}
}

3
git.c
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@ -187,7 +187,8 @@ static void handle_internal_command(int argc, const char **argv, char **envp)
{ "mailinfo", cmd_mailinfo },
{ "stripspace", cmd_stripspace },
{ "update-index", cmd_update_index },
{ "update-ref", cmd_update_ref }
{ "update-ref", cmd_update_ref },
{ "fmt-merge-msg", cmd_fmt_merge_msg }
};
int i;