Merge branch 'rs/code-cleaning'

* rs/code-cleaning:
  remote-testsvn: use internal argv_array of struct child_process in cmd_import()
  bundle: use internal argv_array of struct child_process in create_bundle()
  fast-import: use hashcmp() for SHA1 hash comparison
  transport: simplify fetch_objs_via_rsync() using argv_array
  run-command: use internal argv_array of struct child_process in run_hook_ve()
  use commit_list_count() to count the members of commit_lists
  strbuf: use strbuf_addstr() for adding C strings

13 files changed, 41 insertions, 103 deletions

diff --git a/builtin/blame.c b/builtin/blame.c
index 23212cbe87..17d30d00aa 100644
--- a/builtin/blame.c
+++ b/builtin/blame.c
@@ -1371,11 +1371,8 @@ static struct commit_list *first_scapegoat(struct rev_info *revs, struct commit
 
 static int num_scapegoats(struct rev_info *revs, struct commit *commit)
 {
-	int cnt;
 	struct commit_list *l = first_scapegoat(revs, commit);
-	for (cnt = 0; l; l = l->next)
-		cnt++;
-	return cnt;
+	return commit_list_count(l);
 }
 
 /* Distribute collected unsorted blames to the respected sorted lists
diff --git a/builtin/commit.c b/builtin/commit.c
index 72eb3beb36..f2d7979deb 100644
--- a/builtin/commit.c
+++ b/builtin/commit.c
@@ -702,7 +702,7 @@ static int prepare_to_commit(const char *index_file, const char *prefix,
 		char *buffer;
 		buffer = strstr(use_message_buffer, "\n\n");
 		if (buffer)
-			strbuf_add(&sb, buffer + 2, strlen(buffer + 2));
+			strbuf_addstr(&sb, buffer + 2);
 		hook_arg1 = "commit";
 		hook_arg2 = use_message;
 	} else if (fixup_message) {
diff --git a/builtin/for-each-ref.c b/builtin/for-each-ref.c
index 4135980f20..47bd624696 100644
--- a/builtin/for-each-ref.c
+++ b/builtin/for-each-ref.c
@@ -283,18 +283,6 @@ static void grab_tag_values(struct atom_value *val, int deref, struct object *ob
 	}
 }
 
-static int num_parents(struct commit *commit)
-{
-	struct commit_list *parents;
-	int i;
-
-	for (i = 0, parents = commit->parents;
-	     parents;
-	     parents = parents->next)
-		i++;
-	return i;
-}
-
 /* See grab_values */
 static void grab_commit_values(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
 {
@@ -315,12 +303,12 @@ static void grab_commit_values(struct atom_value *val, int deref, struct object
 		}
 		if (!strcmp(name, "numparent")) {
 			char *s = xmalloc(40);
-			v->ul = num_parents(commit);
+			v->ul = commit_list_count(commit->parents);
 			sprintf(s, "%lu", v->ul);
 			v->s = s;
 		}
 		else if (!strcmp(name, "parent")) {
-			int num = num_parents(commit);
+			int num = commit_list_count(commit->parents);
 			int i;
 			struct commit_list *parents;
 			char *s = xmalloc(41 * num + 1);
diff --git a/bundle.c b/bundle.c
index 1222952075..71a21a67fa 100644
--- a/bundle.c
+++ b/bundle.c
@@ -237,8 +237,6 @@ int create_bundle(struct bundle_header *header, const char *path,
 	static struct lock_file lock;
 	int bundle_fd = -1;
 	int bundle_to_stdout;
-	struct argv_array argv_boundary = ARGV_ARRAY_INIT;
-	struct argv_array argv_pack = ARGV_ARRAY_INIT;
 	int i, ref_count = 0;
 	struct strbuf buf = STRBUF_INIT;
 	struct rev_info revs;
@@ -260,14 +258,12 @@ int create_bundle(struct bundle_header *header, const char *path,
 	init_revisions(&revs, NULL);
 
 	/* write prerequisites */
-	argv_array_pushl(&argv_boundary,
+	memset(&rls, 0, sizeof(rls));
+	argv_array_pushl(&rls.args,
 			 "rev-list", "--boundary", "--pretty=oneline",
 			 NULL);
 	for (i = 1; i < argc; i++)
-		argv_array_push(&argv_boundary, argv[i]);
-
-	memset(&rls, 0, sizeof(rls));
-	rls.argv = argv_boundary.argv;
+		argv_array_push(&rls.args, argv[i]);
 	rls.out = -1;
 	rls.git_cmd = 1;
 	if (start_command(&rls))
@@ -382,12 +378,11 @@ int create_bundle(struct bundle_header *header, const char *path,
 	write_or_die(bundle_fd, "\n", 1);
 
 	/* write pack */
-	argv_array_pushl(&argv_pack,
+	memset(&rls, 0, sizeof(rls));
+	argv_array_pushl(&rls.args,
 			 "pack-objects", "--all-progress-implied",
 			 "--stdout", "--thin", "--delta-base-offset",
 			 NULL);
-	memset(&rls, 0, sizeof(rls));
-	rls.argv = argv_pack.argv;
 	rls.in = -1;
 	rls.out = bundle_fd;
 	rls.git_cmd = 1;
diff --git a/commit.c b/commit.c
index 90a6d2974f..dce3d69dfd 100644
--- a/commit.c
+++ b/commit.c
@@ -970,12 +970,7 @@ struct commit_list *get_merge_bases_many(struct commit *one,
 	}
 
 	/* There are more than one */
-	cnt = 0;
-	list = result;
-	while (list) {
-		list = list->next;
-		cnt++;
-	}
+	cnt = commit_list_count(result);
 	rslt = xcalloc(cnt, sizeof(*rslt));
 	for (list = result, i = 0; list; list = list->next)
 		rslt[i++] = list->item;
diff --git a/diff.c b/diff.c
index 06bdfb8ae5..867f034b8f 100644
--- a/diff.c
+++ b/diff.c
@@ -525,9 +525,9 @@ static void emit_hunk_header(struct emit_callback *ecbdata,
 	ep += 2; /* skip over @@ */
 
 	/* The hunk header in fraginfo color */
-	strbuf_add(&msgbuf, frag, strlen(frag));
+	strbuf_addstr(&msgbuf, frag);
 	strbuf_add(&msgbuf, line, ep - line);
-	strbuf_add(&msgbuf, reset, strlen(reset));
+	strbuf_addstr(&msgbuf, reset);
 
 	/*
 	 * trailing "\r\n"
@@ -541,15 +541,15 @@ static void emit_hunk_header(struct emit_callback *ecbdata,
 		if (*ep != ' ' && *ep != '\t')
 			break;
 	if (ep != cp) {
-		strbuf_add(&msgbuf, plain, strlen(plain));
+		strbuf_addstr(&msgbuf, plain);
 		strbuf_add(&msgbuf, cp, ep - cp);
-		strbuf_add(&msgbuf, reset, strlen(reset));
+		strbuf_addstr(&msgbuf, reset);
 	}
 
 	if (ep < line + len) {
-		strbuf_add(&msgbuf, func, strlen(func));
+		strbuf_addstr(&msgbuf, func);
 		strbuf_add(&msgbuf, ep, line + len - ep);
-		strbuf_add(&msgbuf, reset, strlen(reset));
+		strbuf_addstr(&msgbuf, reset);
 	}
 
 	strbuf_add(&msgbuf, line + len, org_len - len);
diff --git a/fast-import.c b/fast-import.c
index fa635f75c3..d73f58cbe3 100644
--- a/fast-import.c
+++ b/fast-import.c
@@ -2324,7 +2324,7 @@ static void file_change_m(const char *p, struct branch *b)
 	}
 
 	/* Git does not track empty, non-toplevel directories. */
-	if (S_ISDIR(mode) && !memcmp(sha1, EMPTY_TREE_SHA1_BIN, 20) && *p) {
+	if (S_ISDIR(mode) && !hashcmp(sha1, EMPTY_TREE_SHA1_BIN) && *p) {
 		tree_content_remove(&b->branch_tree, p, NULL, 0);
 		return;
 	}
diff --git a/line-log.c b/line-log.c
index afcc98db93..1008e72258 100644
--- a/line-log.c
+++ b/line-log.c
@@ -766,17 +766,6 @@ void line_log_init(struct rev_info *rev, const char *prefix, struct string_list
 	}
 }
 
-static int count_parents(struct commit *commit)
-{
-	struct commit_list *parents = commit->parents;
-	int count = 0;
-	while (parents) {
-		count++;
-		parents = parents->next;
-	}
-	return count;
-}
-
 static void move_diff_queue(struct diff_queue_struct *dst,
 			    struct diff_queue_struct *src)
 {
@@ -1150,7 +1139,7 @@ static int process_ranges_merge_commit(struct rev_info *rev, struct commit *comm
 	struct commit **parents;
 	struct commit_list *p;
 	int i;
-	int nparents = count_parents(commit);
+	int nparents = commit_list_count(commit->parents);
 
 	diffqueues = xmalloc(nparents * sizeof(*diffqueues));
 	cand = xmalloc(nparents * sizeof(*cand));
diff --git a/path.c b/path.c
index 25c3b8ba7e..3afcdb432a 100644
--- a/path.c
+++ b/path.c
@@ -275,16 +275,16 @@ char *expand_user_path(const char *path)
 			const char *home = getenv("HOME");
 			if (!home)
 				goto return_null;
-			strbuf_add(&user_path, home, strlen(home));
+			strbuf_addstr(&user_path, home);
 		} else {
 			struct passwd *pw = getpw_str(username, username_len);
 			if (!pw)
 				goto return_null;
-			strbuf_add(&user_path, pw->pw_dir, strlen(pw->pw_dir));
+			strbuf_addstr(&user_path, pw->pw_dir);
 		}
 		to_copy = first_slash;
 	}
-	strbuf_add(&user_path, to_copy, strlen(to_copy));
+	strbuf_addstr(&user_path, to_copy);
 	return strbuf_detach(&user_path, NULL);
 return_null:
 	strbuf_release(&user_path);
diff --git a/pretty.c b/pretty.c
index eb676d6d54..3a1da6fd32 100644
--- a/pretty.c
+++ b/pretty.c
@@ -1554,12 +1554,7 @@ static void pp_header(struct pretty_print_context *pp,
 		}
 
 		if (!parents_shown) {
-			struct commit_list *parent;
-			int num;
-			for (parent = commit->parents, num = 0;
-			     parent;
-			     parent = parent->next, num++)
-				;
+			unsigned num = commit_list_count(commit->parents);
 			/* with enough slop */
 			strbuf_grow(sb, num * 50 + 20);
 			add_merge_info(pp, sb, commit);
diff --git a/remote-testsvn.c b/remote-testsvn.c
index 6be55cbe9e..686e07d317 100644
--- a/remote-testsvn.c
+++ b/remote-testsvn.c
@@ -175,8 +175,8 @@ static int cmd_import(const char *line)
 	char *note_msg;
 	unsigned char head_sha1[20];
 	unsigned int startrev;
-	struct argv_array svndump_argv = ARGV_ARRAY_INIT;
 	struct child_process svndump_proc;
+	const char *command = "svnrdump";
 
 	if (read_ref(private_ref, head_sha1))
 		startrev = 0;
@@ -202,15 +202,14 @@ static int cmd_import(const char *line)
 	} else {
 		memset(&svndump_proc, 0, sizeof(struct child_process));
 		svndump_proc.out = -1;
-		argv_array_push(&svndump_argv, "svnrdump");
-		argv_array_push(&svndump_argv, "dump");
-		argv_array_push(&svndump_argv, url);
-		argv_array_pushf(&svndump_argv, "-r%u:HEAD", startrev);
-		svndump_proc.argv = svndump_argv.argv;
+		argv_array_push(&svndump_proc.args, command);
+		argv_array_push(&svndump_proc.args, "dump");
+		argv_array_push(&svndump_proc.args, url);
+		argv_array_pushf(&svndump_proc.args, "-r%u:HEAD", startrev);
 
 		code = start_command(&svndump_proc);
 		if (code)
-			die("Unable to start %s, code %d", svndump_proc.argv[0], code);
+			die("Unable to start %s, code %d", command, code);
 		dumpin_fd = svndump_proc.out;
 	}
 	/* setup marks file import/export */
@@ -226,8 +225,7 @@ static int cmd_import(const char *line)
 	if (!dump_from_file) {
 		code = finish_command(&svndump_proc);
 		if (code)
-			warning("%s, returned %d", svndump_proc.argv[0], code);
-		argv_array_clear(&svndump_argv);
+			warning("%s, returned %d", command, code);
 	}
 
 	return 0;
diff --git a/run-command.c b/run-command.c
index be07d4ad33..576dfeaa3f 100644
--- a/run-command.c
+++ b/run-command.c
@@ -770,28 +770,21 @@ char *find_hook(const char *name)
 int run_hook_ve(const char *const *env, const char *name, va_list args)
 {
 	struct child_process hook;
-	struct argv_array argv = ARGV_ARRAY_INIT;
 	const char *p;
-	int ret;
 
 	p = find_hook(name);
 	if (!p)
 		return 0;
 
-	argv_array_push(&argv, p);
-
-	while ((p = va_arg(args, const char *)))
-		argv_array_push(&argv, p);
-
 	memset(&hook, 0, sizeof(hook));
-	hook.argv = argv.argv;
+	argv_array_push(&hook.args, p);
+	while ((p = va_arg(args, const char *)))
+		argv_array_push(&hook.args, p);
 	hook.env = env;
 	hook.no_stdin = 1;
 	hook.stdout_to_stderr = 1;
 
-	ret = run_command(&hook);
-	argv_array_clear(&argv);
-	return ret;
+	return run_command(&hook);
 }
 
 int run_hook_le(const char *const *env, const char *name, ...)
diff --git a/transport.c b/transport.c
index 59c9727d8d..3e425709fd 100644
--- a/transport.c
+++ b/transport.c
@@ -263,32 +263,20 @@ static struct ref *get_refs_via_rsync(struct transport *transport, int for_push)
 static int fetch_objs_via_rsync(struct transport *transport,
 				int nr_objs, struct ref **to_fetch)
 {
-	struct strbuf buf = STRBUF_INIT;
 	struct child_process rsync;
-	const char *args[8];
-	int result;
-
-	strbuf_addstr(&buf, rsync_url(transport->url));
-	strbuf_addstr(&buf, "/objects/");
 
 	memset(&rsync, 0, sizeof(rsync));
-	rsync.argv = args;
 	rsync.stdout_to_stderr = 1;
-	args[0] = "rsync";
-	args[1] = (transport->verbose > 1) ? "-rv" : "-r";
-	args[2] = "--ignore-existing";
-	args[3] = "--exclude";
-	args[4] = "info";
-	args[5] = buf.buf;
-	args[6] = get_object_directory();
-	args[7] = NULL;
+	argv_array_push(&rsync.args, "rsync");
+	argv_array_push(&rsync.args, (transport->verbose > 1) ? "-rv" : "-r");
+	argv_array_push(&rsync.args, "--ignore-existing");
+	argv_array_push(&rsync.args, "--exclude");
+	argv_array_push(&rsync.args, "info");
+	argv_array_pushf(&rsync.args, "%s/objects/", rsync_url(transport->url));
+	argv_array_push(&rsync.args, get_object_directory());
 
 	/* NEEDSWORK: handle one level of alternates */
-	result = run_command(&rsync);
-
-	strbuf_release(&buf);
-
-	return result;
+	return run_command(&rsync);
 }
 
 static int write_one_ref(const char *name, const unsigned char *sha1,