strbuf: use strbuf_addstr() for adding C strings

Avoid code duplication and let strbuf_addstr() call strlen() for us.
Signed-off-by: NRene Scharfe <l.s.r@web.de>
Reviewed-by: NJonathan Nieder <jrnieder@gmail.com>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

builtin/commit.c

@@ -707,7 +707,7 @@ 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.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);

path.c

@@ -277,16 +277,16 @@ 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);