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-rw-r--r--builtin/fmt-merge-msg.c428
1 files changed, 378 insertions, 50 deletions
diff --git a/builtin/fmt-merge-msg.c b/builtin/fmt-merge-msg.c
index 75816329d6..2c4d435da1 100644
--- a/builtin/fmt-merge-msg.c
+++ b/builtin/fmt-merge-msg.c
@@ -5,32 +5,45 @@
#include "revision.h"
#include "tag.h"
#include "string-list.h"
+#include "branch.h"
+#include "fmt-merge-msg.h"
+#include "gpg-interface.h"
static const char * const fmt_merge_msg_usage[] = {
"git fmt-merge-msg [-m <message>] [--log[=<n>]|--no-log] [--file <file>]",
NULL
};
-static int shortlog_len;
+static int use_branch_desc;
-static int fmt_merge_msg_config(const char *key, const char *value, void *cb)
+int fmt_merge_msg_config(const char *key, const char *value, void *cb)
{
if (!strcmp(key, "merge.log") || !strcmp(key, "merge.summary")) {
int is_bool;
- shortlog_len = git_config_bool_or_int(key, value, &is_bool);
- if (!is_bool && shortlog_len < 0)
+ merge_log_config = git_config_bool_or_int(key, value, &is_bool);
+ if (!is_bool && merge_log_config < 0)
return error("%s: negative length %s", key, value);
- if (is_bool && shortlog_len)
- shortlog_len = DEFAULT_MERGE_LOG_LEN;
+ if (is_bool && merge_log_config)
+ merge_log_config = DEFAULT_MERGE_LOG_LEN;
+ } else if (!strcmp(key, "merge.branchdesc")) {
+ use_branch_desc = git_config_bool(key, value);
+ } else {
+ return git_default_config(key, value, cb);
}
return 0;
}
+/* merge data per repository where the merged tips came from */
struct src_data {
struct string_list branch, tag, r_branch, generic;
int head_status;
};
+struct origin_data {
+ unsigned char sha1[20];
+ unsigned is_local_branch:1;
+};
+
static void init_src_data(struct src_data *data)
{
data->branch.strdup_strings = 1;
@@ -42,14 +55,56 @@ static void init_src_data(struct src_data *data)
static struct string_list srcs = STRING_LIST_INIT_DUP;
static struct string_list origins = STRING_LIST_INIT_DUP;
-static int handle_line(char *line)
+struct merge_parents {
+ int alloc, nr;
+ struct merge_parent {
+ unsigned char given[20];
+ unsigned char commit[20];
+ unsigned char used;
+ } *item;
+};
+
+/*
+ * I know, I know, this is inefficient, but you won't be pulling and merging
+ * hundreds of heads at a time anyway.
+ */
+static struct merge_parent *find_merge_parent(struct merge_parents *table,
+ unsigned char *given,
+ unsigned char *commit)
+{
+ int i;
+ for (i = 0; i < table->nr; i++) {
+ if (given && hashcmp(table->item[i].given, given))
+ continue;
+ if (commit && hashcmp(table->item[i].commit, commit))
+ continue;
+ return &table->item[i];
+ }
+ return NULL;
+}
+
+static void add_merge_parent(struct merge_parents *table,
+ unsigned char *given,
+ unsigned char *commit)
+{
+ if (table->nr && find_merge_parent(table, given, commit))
+ return;
+ ALLOC_GROW(table->item, table->nr + 1, table->alloc);
+ hashcpy(table->item[table->nr].given, given);
+ hashcpy(table->item[table->nr].commit, commit);
+ table->item[table->nr].used = 0;
+ table->nr++;
+}
+
+static int handle_line(char *line, struct merge_parents *merge_parents)
{
int i, len = strlen(line);
- unsigned char *sha1;
+ struct origin_data *origin_data;
char *src, *origin;
struct src_data *src_data;
struct string_list_item *item;
int pulling_head = 0;
+ unsigned char sha1[20];
if (len < 43 || line[40] != '\t')
return 1;
@@ -60,17 +115,25 @@ static int handle_line(char *line)
if (line[41] != '\t')
return 2;
- line[40] = 0;
- sha1 = xmalloc(20);
- i = get_sha1(line, sha1);
- line[40] = '\t';
+ i = get_sha1_hex(line, sha1);
if (i)
return 3;
+ if (!find_merge_parent(merge_parents, sha1, NULL))
+ return 0; /* subsumed by other parents */
+
+ origin_data = xcalloc(1, sizeof(struct origin_data));
+ hashcpy(origin_data->sha1, sha1);
+
if (line[len - 1] == '\n')
line[len - 1] = 0;
line += 42;
+ /*
+ * At this point, line points at the beginning of comment e.g.
+ * "branch 'frotz' of git://that/repository.git".
+ * Find the repository name and point it with src.
+ */
src = strstr(line, " of ");
if (src) {
*src = 0;
@@ -93,6 +156,7 @@ static int handle_line(char *line)
origin = src;
src_data->head_status |= 1;
} else if (!prefixcmp(line, "branch ")) {
+ origin_data->is_local_branch = 1;
origin = line + 7;
string_list_append(&src_data->branch, origin);
src_data->head_status |= 2;
@@ -119,7 +183,9 @@ static int handle_line(char *line)
sprintf(new_origin, "%s of %s", origin, src);
origin = new_origin;
}
- string_list_append(&origins, origin)->util = sha1;
+ if (strcmp(".", src))
+ origin_data->is_local_branch = 0;
+ string_list_append(&origins, origin)->util = origin_data;
return 0;
}
@@ -140,23 +206,141 @@ static void print_joined(const char *singular, const char *plural,
}
}
-static void shortlog(const char *name, unsigned char *sha1,
- struct commit *head, struct rev_info *rev, int limit,
- struct strbuf *out)
+static void add_branch_desc(struct strbuf *out, const char *name)
+{
+ struct strbuf desc = STRBUF_INIT;
+
+ if (!read_branch_desc(&desc, name)) {
+ const char *bp = desc.buf;
+ while (*bp) {
+ const char *ep = strchrnul(bp, '\n');
+ if (*ep)
+ ep++;
+ strbuf_addf(out, " : %.*s", (int)(ep - bp), bp);
+ bp = ep;
+ }
+ if (out->buf[out->len - 1] != '\n')
+ strbuf_addch(out, '\n');
+ }
+ strbuf_release(&desc);
+}
+
+#define util_as_integral(elem) ((intptr_t)((elem)->util))
+
+static void record_person(int which, struct string_list *people,
+ struct commit *commit)
+{
+ char *name_buf, *name, *name_end;
+ struct string_list_item *elem;
+ const char *field = (which == 'a') ? "\nauthor " : "\ncommitter ";
+
+ name = strstr(commit->buffer, field);
+ if (!name)
+ return;
+ name += strlen(field);
+ name_end = strchrnul(name, '<');
+ if (*name_end)
+ name_end--;
+ while (isspace(*name_end) && name <= name_end)
+ name_end--;
+ if (name_end < name)
+ return;
+ name_buf = xmemdupz(name, name_end - name + 1);
+
+ elem = string_list_lookup(people, name_buf);
+ if (!elem) {
+ elem = string_list_insert(people, name_buf);
+ elem->util = (void *)0;
+ }
+ elem->util = (void*)(util_as_integral(elem) + 1);
+ free(name_buf);
+}
+
+static int cmp_string_list_util_as_integral(const void *a_, const void *b_)
+{
+ const struct string_list_item *a = a_, *b = b_;
+ return util_as_integral(b) - util_as_integral(a);
+}
+
+static void add_people_count(struct strbuf *out, struct string_list *people)
+{
+ if (people->nr == 1)
+ strbuf_addf(out, "%s", people->items[0].string);
+ else if (people->nr == 2)
+ strbuf_addf(out, "%s (%d) and %s (%d)",
+ people->items[0].string,
+ (int)util_as_integral(&people->items[0]),
+ people->items[1].string,
+ (int)util_as_integral(&people->items[1]));
+ else if (people->nr)
+ strbuf_addf(out, "%s (%d) and others",
+ people->items[0].string,
+ (int)util_as_integral(&people->items[0]));
+}
+
+static void credit_people(struct strbuf *out,
+ struct string_list *them,
+ int kind)
+{
+ const char *label;
+ const char *me;
+
+ if (kind == 'a') {
+ label = "\n# By ";
+ me = git_author_info(IDENT_NO_DATE);
+ } else {
+ label = "\n# Via ";
+ me = git_committer_info(IDENT_NO_DATE);
+ }
+
+ if (!them->nr ||
+ (them->nr == 1 &&
+ me &&
+ (me = skip_prefix(me, them->items->string)) != NULL &&
+ skip_prefix(me, " <")))
+ return;
+ strbuf_addstr(out, label);
+ add_people_count(out, them);
+}
+
+static void add_people_info(struct strbuf *out,
+ struct string_list *authors,
+ struct string_list *committers)
+{
+ if (authors->nr)
+ qsort(authors->items,
+ authors->nr, sizeof(authors->items[0]),
+ cmp_string_list_util_as_integral);
+ if (committers->nr)
+ qsort(committers->items,
+ committers->nr, sizeof(committers->items[0]),
+ cmp_string_list_util_as_integral);
+
+ credit_people(out, authors, 'a');
+ credit_people(out, committers, 'c');
+}
+
+static void shortlog(const char *name,
+ struct origin_data *origin_data,
+ struct commit *head,
+ struct rev_info *rev, int limit,
+ struct strbuf *out)
{
int i, count = 0;
struct commit *commit;
struct object *branch;
struct string_list subjects = STRING_LIST_INIT_DUP;
+ struct string_list authors = STRING_LIST_INIT_DUP;
+ struct string_list committers = STRING_LIST_INIT_DUP;
int flags = UNINTERESTING | TREESAME | SEEN | SHOWN | ADDED;
struct strbuf sb = STRBUF_INIT;
+ const unsigned char *sha1 = origin_data->sha1;
branch = deref_tag(parse_object(sha1), sha1_to_hex(sha1), 40);
if (!branch || branch->type != OBJ_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;
@@ -165,10 +349,15 @@ static void shortlog(const char *name, unsigned char *sha1,
while ((commit = get_revision(rev)) != NULL) {
struct pretty_print_context ctx = {0};
- /* ignore merges */
- if (commit->parents && commit->parents->next)
+ if (commit->parents && commit->parents->next) {
+ /* do not list a merge but count committer */
+ record_person('c', &committers, commit);
continue;
-
+ }
+ if (!count)
+ /* the 'tip' committer */
+ record_person('c', &committers, commit);
+ record_person('a', &authors, commit);
count++;
if (subjects.nr > limit)
continue;
@@ -183,11 +372,15 @@ static void shortlog(const char *name, unsigned char *sha1,
string_list_append(&subjects, strbuf_detach(&sb, NULL));
}
+ add_people_info(out, &authors, &committers);
if (count > limit)
strbuf_addf(out, "\n* %s: (%d commits)\n", name, count);
else
strbuf_addf(out, "\n* %s:\n", name);
+ if (origin_data->is_local_branch && use_branch_desc)
+ add_branch_desc(out, name);
+
for (i = 0; i < subjects.nr; i++)
if (i >= limit)
strbuf_addf(out, " ...\n");
@@ -200,10 +393,12 @@ static void shortlog(const char *name, unsigned char *sha1,
rev->commits = NULL;
rev->pending.nr = 0;
+ string_list_clear(&authors, 0);
+ string_list_clear(&committers, 0);
string_list_clear(&subjects, 0);
}
-static void do_fmt_merge_msg_title(struct strbuf *out,
+static void fmt_merge_msg_title(struct strbuf *out,
const char *current_branch) {
int i = 0;
char *sep = "";
@@ -256,19 +451,155 @@ static void do_fmt_merge_msg_title(struct strbuf *out,
strbuf_addf(out, " into %s\n", current_branch);
}
-static int do_fmt_merge_msg(int merge_title, struct strbuf *in,
- struct strbuf *out, int shortlog_len) {
+static void fmt_tag_signature(struct strbuf *tagbuf,
+ struct strbuf *sig,
+ const char *buf,
+ unsigned long len)
+{
+ const char *tag_body = strstr(buf, "\n\n");
+ if (tag_body) {
+ tag_body += 2;
+ strbuf_add(tagbuf, tag_body, buf + len - tag_body);
+ }
+ strbuf_complete_line(tagbuf);
+ if (sig->len) {
+ strbuf_addch(tagbuf, '\n');
+ strbuf_add_lines(tagbuf, "# ", sig->buf, sig->len);
+ }
+}
+
+static void fmt_merge_msg_sigs(struct strbuf *out)
+{
+ int i, tag_number = 0, first_tag = 0;
+ struct strbuf tagbuf = STRBUF_INIT;
+
+ for (i = 0; i < origins.nr; i++) {
+ unsigned char *sha1 = origins.items[i].util;
+ enum object_type type;
+ unsigned long size, len;
+ char *buf = read_sha1_file(sha1, &type, &size);
+ struct strbuf sig = STRBUF_INIT;
+
+ if (!buf || type != OBJ_TAG)
+ goto next;
+ len = parse_signature(buf, size);
+
+ if (size == len)
+ ; /* merely annotated */
+ else if (verify_signed_buffer(buf, len, buf + len, size - len, &sig)) {
+ if (!sig.len)
+ strbuf_addstr(&sig, "gpg verification failed.\n");
+ }
+
+ if (!tag_number++) {
+ fmt_tag_signature(&tagbuf, &sig, buf, len);
+ first_tag = i;
+ } else {
+ if (tag_number == 2) {
+ struct strbuf tagline = STRBUF_INIT;
+ strbuf_addf(&tagline, "\n# %s\n",
+ origins.items[first_tag].string);
+ strbuf_insert(&tagbuf, 0, tagline.buf,
+ tagline.len);
+ strbuf_release(&tagline);
+ }
+ strbuf_addf(&tagbuf, "\n# %s\n",
+ origins.items[i].string);
+ fmt_tag_signature(&tagbuf, &sig, buf, len);
+ }
+ strbuf_release(&sig);
+ next:
+ free(buf);
+ }
+ if (tagbuf.len) {
+ strbuf_addch(out, '\n');
+ strbuf_addbuf(out, &tagbuf);
+ }
+ strbuf_release(&tagbuf);
+}
+
+static void find_merge_parents(struct merge_parents *result,
+ struct strbuf *in, unsigned char *head)
+{
+ struct commit_list *parents, *next;
+ struct commit *head_commit;
+ int pos = 0, i, j;
+
+ parents = NULL;
+ while (pos < in->len) {
+ int len;
+ char *p = in->buf + pos;
+ char *newline = strchr(p, '\n');
+ unsigned char sha1[20];
+ struct commit *parent;
+ struct object *obj;
+
+ len = newline ? newline - p : strlen(p);
+ pos += len + !!newline;
+
+ if (len < 43 ||
+ get_sha1_hex(p, sha1) ||
+ p[40] != '\t' ||
+ p[41] != '\t')
+ continue; /* skip not-for-merge */
+ /*
+ * Do not use get_merge_parent() here; we do not have
+ * "name" here and we do not want to contaminate its
+ * util field yet.
+ */
+ obj = parse_object(sha1);
+ parent = (struct commit *)peel_to_type(NULL, 0, obj, OBJ_COMMIT);
+ if (!parent)
+ continue;
+ commit_list_insert(parent, &parents);
+ add_merge_parent(result, obj->sha1, parent->object.sha1);
+ }
+ head_commit = lookup_commit(head);
+ if (head_commit)
+ commit_list_insert(head_commit, &parents);
+ parents = reduce_heads(parents);
+
+ while (parents) {
+ for (i = 0; i < result->nr; i++)
+ if (!hashcmp(result->item[i].commit,
+ parents->item->object.sha1))
+ result->item[i].used = 1;
+ next = parents->next;
+ free(parents);
+ parents = next;
+ }
+
+ for (i = j = 0; i < result->nr; i++) {
+ if (result->item[i].used) {
+ if (i != j)
+ result->item[j] = result->item[i];
+ j++;
+ }
+ }
+ result->nr = j;
+}
+
+int fmt_merge_msg(struct strbuf *in, struct strbuf *out,
+ struct fmt_merge_msg_opts *opts)
+{
int i = 0, pos = 0;
unsigned char head_sha1[20];
const char *current_branch;
+ void *current_branch_to_free;
+ struct merge_parents merge_parents;
+
+ memset(&merge_parents, 0, sizeof(merge_parents));
/* get current branch */
- current_branch = resolve_ref("HEAD", head_sha1, 1, NULL);
+ current_branch = current_branch_to_free =
+ resolve_refdup("HEAD", head_sha1, 1, NULL);
if (!current_branch)
die("No current branch");
if (!prefixcmp(current_branch, "refs/heads/"))
current_branch += 11;
+ find_merge_parents(&merge_parents, in, head_sha1);
+
/* get a line */
while (pos < in->len) {
int len;
@@ -279,45 +610,45 @@ static int do_fmt_merge_msg(int merge_title, struct strbuf *in,
pos += len + !!newline;
i++;
p[len] = 0;
- if (handle_line(p))
+ if (handle_line(p, &merge_parents))
die ("Error in line %d: %.*s", i, len, p);
}
- if (!srcs.nr)
- return 0;
+ if (opts->add_title && srcs.nr)
+ fmt_merge_msg_title(out, current_branch);
- if (merge_title)
- do_fmt_merge_msg_title(out, current_branch);
+ if (origins.nr)
+ fmt_merge_msg_sigs(out);
- if (shortlog_len) {
+ if (opts->shortlog_len) {
struct commit *head;
struct rev_info rev;
- head = lookup_commit(head_sha1);
+ head = lookup_commit_or_die(head_sha1, "HEAD");
init_revisions(&rev, NULL);
rev.commit_format = CMIT_FMT_ONELINE;
rev.ignore_merges = 1;
rev.limited = 1;
- if (suffixcmp(out->buf, "\n"))
- strbuf_addch(out, '\n');
+ strbuf_complete_line(out);
for (i = 0; i < origins.nr; i++)
- shortlog(origins.items[i].string, origins.items[i].util,
- head, &rev, shortlog_len, out);
+ shortlog(origins.items[i].string,
+ origins.items[i].util,
+ head, &rev, opts->shortlog_len, out);
}
- return 0;
-}
-int fmt_merge_msg(struct strbuf *in, struct strbuf *out,
- int merge_title, int shortlog_len) {
- return do_fmt_merge_msg(merge_title, in, out, shortlog_len);
+ strbuf_complete_line(out);
+ free(current_branch_to_free);
+ free(merge_parents.item);
+ return 0;
}
int cmd_fmt_merge_msg(int argc, const char **argv, const char *prefix)
{
const char *inpath = NULL;
const char *message = NULL;
+ int shortlog_len = -1;
struct option options[] = {
{ OPTION_INTEGER, 0, "log", &shortlog_len, "n",
"populate log with at most <n> entries from shortlog",
@@ -335,20 +666,15 @@ int cmd_fmt_merge_msg(int argc, const char **argv, const char *prefix)
FILE *in = stdin;
struct strbuf input = STRBUF_INIT, output = STRBUF_INIT;
int ret;
+ struct fmt_merge_msg_opts opts;
git_config(fmt_merge_msg_config, NULL);
argc = parse_options(argc, argv, prefix, options, fmt_merge_msg_usage,
0);
if (argc > 0)
usage_with_options(fmt_merge_msg_usage, options);
- if (message && !shortlog_len) {
- char nl = '\n';
- write_in_full(STDOUT_FILENO, message, strlen(message));
- write_in_full(STDOUT_FILENO, &nl, 1);
- return 0;
- }
if (shortlog_len < 0)
- die("Negative --log=%d", shortlog_len);
+ shortlog_len = (merge_log_config > 0) ? merge_log_config : 0;
if (inpath && strcmp(inpath, "-")) {
in = fopen(inpath, "r");
@@ -361,10 +687,12 @@ int cmd_fmt_merge_msg(int argc, const char **argv, const char *prefix)
if (message)
strbuf_addstr(&output, message);
- ret = fmt_merge_msg(&input, &output,
- message ? 0 : 1,
- shortlog_len);
+ memset(&opts, 0, sizeof(opts));
+ opts.add_title = !message;
+ opts.shortlog_len = shortlog_len;
+
+ ret = fmt_merge_msg(&input, &output, &opts);
if (ret)
return ret;
write_in_full(STDOUT_FILENO, output.buf, output.len);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-16 23:40:55 +0000