notes.c: append separator instead of insert by pos

Rename "insert_separator" to "append_separator" and also remove the
"postion" argument, this serves two purpose:

The first is that when specifying more than one "-m" ( like "-F", etc)
to "git notes add" or "git notes append", the order of them matters,
which means we need to append the each separator and message in turn,
so we don't have to make the caller specify the position, the "append"
operation is enough and clear.

The second is that when we execute the "git notes append" subcommand,
we need to combine the "prev_note" and "current_note" to get the
final result. Before, we inserted a newline character at the beginning
of "current_note". Now, we will append a newline to the end of
"prev_note" instead, this will give the consisitent results.

Signed-off-by: Teng Long <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: dyrone

builtin/notes.c

@@ -229,13 +229,13 @@ static void write_note_data(struct note_data *d, struct object_id *oid)
 	}
 }
 
-static void insert_separator(struct strbuf *message, size_t pos)
+static void append_separator(struct strbuf *message)
 {
 	size_t sep_len = strlen(separator);
 	if (sep_len && separator[sep_len - 1] == '\n')
-		strbuf_insertstr(message, pos, separator);
+		strbuf_addstr(message, separator);
 	else
-		strbuf_insertf(message, pos, "%s%s", separator, "\n");
+		strbuf_addf(message, "%s%s", separator, "\n");
 }
 
 static void concat_messages(struct note_data *d)
@@ -245,7 +245,7 @@ static void concat_messages(struct note_data *d)
 	size_t i;
 	for (i = 0; i < d->msg_nr ; i++) {
 		if (d->buf.len)
-			insert_separator(&d->buf, d->buf.len);
+			append_separator(&d->buf);
 		strbuf_add(&msg, d->messages[i]->buf.buf, d->messages[i]->buf.len);
 		strbuf_addbuf(&d->buf, &msg);
 		if (d->messages[i]->stripspace)
@@ -680,14 +680,17 @@ static int append_edit(int argc, const char **argv, const char *prefix)
 		/* Append buf to previous note contents */
 		unsigned long size;
 		enum object_type type;
-		char *prev_buf = repo_read_object_file(the_repository, note,
-						       &type, &size);
+		struct strbuf buf = STRBUF_INIT;
+		char *prev_buf = repo_read_object_file(the_repository, note, &type, &size);
 
-		if (d.buf.len && prev_buf && size)
-			insert_separator(&d.buf, 0);
 		if (prev_buf && size)
-			strbuf_insert(&d.buf, 0, prev_buf, size);
+			strbuf_add(&buf, prev_buf, size);
+		if (d.buf.len && prev_buf && size)
+			append_separator(&buf);
+		strbuf_insert(&d.buf, 0, buf.buf, buf.len);
+
 		free(prev_buf);
+		strbuf_release(&buf);
 	}
 
 	if (d.buf.len || allow_empty) {