[PATCH] Make git-fmt-merge-msg a builtin
Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
---
This does not (yet) remove the Perl version.
Makefile | 2
builtin-fmt-merge-msg.c | 357 +++++++++++++++++++++++++++++++++++++++++++++++
builtin.h | 1
git.c | 3
4 files changed, 361 insertions(+), 2 deletions(-)
diff --git a/Makefile b/Makefile
index c142bdd..c75b8a9 100644
--- a/Makefile
+++ b/Makefile
@@ -245,7 +245,7 @@ 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)
EXTLIBS = -lz
diff --git a/builtin-fmt-merge-msg.c b/builtin-fmt-merge-msg.c
new file mode 100644
index 0000000..a73b322
--- /dev/null
+++ b/builtin-fmt-merge-msg.c
@@ -0,0 +1,357 @@
+#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)
+{
+ 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] = NULL;
+ 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));
+ srcs.payload[i] = 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);
+ src_data->head_status |= 2;
+ } else if (!strncmp(line, "tag ", 4)) {
+ origin = line;
+ append_to_list(&(src_data->tag), strdup(origin + 4));
+ src_data->head_status |= 2;
+ } else if (!strncmp(line, "remote branch ", 14)) {
+ origin = strdup(line + 14);
+ append_to_list(&(src_data->r_branch), origin);
+ 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));
+ 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);
+ origins.payload[origins.nr - 1] = 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)));
+ 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);
+ }
+
+ 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]);
+ }
+
+ printf(" into %s\n", current_branch);
+
+ if (merge_summary) {
+ struct commit *head;
+ struct rev_info rev;
+
+ head = lookup_commit(head_sha1);
+parse_object(head->object.sha1);
+head = head->parents->item;
+ 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;
+}
+
diff --git a/builtin.h b/builtin.h
old mode 100644
new mode 100755
index f12d5e6..d9e5483
--- a/builtin.h
+++ b/builtin.h
@@ -49,6 +49,7 @@ extern int cmd_cat_file(int argc, const
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);
diff --git a/git.c b/git.c
index 512fa63..7cc826b 100644
--- a/git.c
+++ b/git.c
@@ -200,7 +200,8 @@ static void handle_internal_command(int
{ "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;
--
1.4.1.ga246
Johannes Schindelin <johannes.schindelin@gmx.de>