commit 64a96a6df6285a6c0804e1207eac3e6e636e7fa8
from: Stefan Sperling <stsp@stsp.name>
date: Sun Apr 01 17:57:10 2018 UTC

implement got log -l

commit - d142fc4582a55b3d8550935f8546bfa080f2bd98
commit + 64a96a6df6285a6c0804e1207eac3e6e636e7fa8
blob - e776aa41a89bdb1de0da979d24c3588f0c344152
blob + 971ecdd719a3ce535e5b243e716db49bf1ebd27b
--- got/got.1
+++ got/got.1
@@ -75,16 +75,21 @@ In this case, only files beneath the specified directo
 be checked out.
 .\".It Cm status
 .\"Show current status of files.
-.It Cm log [ Fl p ] [ Fl c Ar commit ] [ Ar repository-path ]
+.It Cm log [ Fl p ] [ Fl c Ar commit ] [ Fl l Ar N ] [ Ar repository-path ]
 Display history of the repository.
 If the
 .Fl p
-flag is given, display the patch of modifications made in each commit.
+option is given, display the patch of modifications made in each commit.
 If a
 .Ar commit
 is specified with the
 .Fl c
 option, start traversing history at this commit.
+The
+.Fl l
+option limits the output to a number of
+.Ar N
+commits.
 If the
 .Ar repository path
 is omitted, use the current working directory.
blob - ba1a257980d1b9f0e7bebe84ebcfc64c904caf32
blob + dfaf97f3a912622429e8a29da96e518bacf65c30
--- got/got.c
+++ got/got.c
@@ -16,6 +16,7 @@
  */
 
 #include <sys/queue.h>
+#include <sys/limits.h>
 
 #include <err.h>
 #include <errno.h>
@@ -317,7 +318,7 @@ struct commit_queue_entry {
 
 static const struct got_error *
 print_commits(struct got_object *root_obj, struct got_object_id *root_id,
-    struct got_repository *repo, int show_patch)
+    struct got_repository *repo, int show_patch, int limit)
 {
 	const struct got_error *err;
 	struct got_commit_object *root_commit;
@@ -358,6 +359,9 @@ print_commits(struct got_object *root_obj, struct got_
 			break;
 		}
 
+		if (limit && --limit == 0)
+			break;
+
 		SIMPLEQ_FOREACH(pid, &entry->commit->parent_ids, entry) {
 			struct got_object *obj;
 			struct got_commit_object *pcommit;
@@ -404,8 +408,8 @@ print_commits(struct got_object *root_obj, struct got_
 __dead void
 usage_log(void)
 {
-	fprintf(stderr, "usage: %s log [-p] [-c commit] [repository-path]\n",
-	    getprogname());
+	fprintf(stderr, "usage: %s log [-p] [-c commit] [ -l N ] "
+	    "[repository-path]\n", getprogname());
 	exit(1);
 }
 
@@ -419,20 +423,26 @@ cmd_log(int argc, char *argv[])
 	char *repo_path = NULL;
 	char *start_commit = NULL;
 	int ch;
-	int show_patch = 0;
+	int show_patch = 0, limit = 0;
+	const char *errstr;
 
 #ifndef PROFILE
 	if (pledge("stdio rpath wpath cpath", NULL) == -1)
 		err(1, "pledge");
 #endif
 
-	while ((ch = getopt(argc, argv, "pc:")) != -1) {
+	while ((ch = getopt(argc, argv, "pc:l:")) != -1) {
 		switch (ch) {
 		case 'p':
 			show_patch = 1;
 			break;
 		case 'c':
 			start_commit = optarg;
+			break;
+		case 'l':
+			limit = strtonum(optarg, 1, INT_MAX, &errstr);
+			if (errstr != NULL)
+				err(1, "-l option %s", errstr);
 			break;
 		default:
 			usage();
@@ -477,7 +487,7 @@ cmd_log(int argc, char *argv[])
 	if (error != NULL)
 		return error;
 	if (got_object_get_type(obj) == GOT_OBJ_TYPE_COMMIT)
-		error = print_commits(obj, id, repo, show_patch);
+		error = print_commits(obj, id, repo, show_patch, limit);
 	else
 		error = got_error(GOT_ERR_OBJ_TYPE);
 	got_object_close(obj);