[PATCH] builtin-notes: Minor (mostly parse_options-related) fixes

[Johan Herland <johan@herland.net>]

Use PARSE_OPT_NONEG to disallow --no-<option> for --message, --file,
--reedit-message and --reuse-message. --no-<option> does not make sense
for these options, and specifying PARSE_OPT_NONEG simplifies the code in
the option-handling callbacks.

Also, use strbuf_addch(... '\n') instead of strbuf_addstr(... "\n") in
couple of places.

Finally, improve the short-help by dividing the options into two OPT_GROUPs.

Suggested-by: Stephen Boyd <bebarino@gmail.com>
Signed-off-by: Johan Herland <johan@herland.net>
---

On Tuesday 16 February 2010, Johan Herland wrote:
> On Monday 15 February 2010, Stephen Boyd wrote:
> > On 02/13/2010 01:28 PM, Johan Herland wrote:
> > > @@ -199,6 +203,40 @@ static int parse_file_arg(const struct option

[...]

> > > +	if (!arg)
> > > +		return -1;
> > 
> > This is impossible unless you're using the PARSE_OPT_OPTARG flag or
> > allowing negation (i.e. --no-reuse-mesage). You should probably make
> > the two callback options PARSE_OPT_NONEG and then drop this if
> > statement. Same applies to some of the other callbacks not introduced
> > in this patch.
> 
> Thanks. Fixed locally. Will be part of the next iteration.
> 
> > > +
> > > +	if (msg->buf.len)
> > > +		strbuf_addstr(&(msg->buf), "\n");
> > > +
> > 
> > Use strbuf_addch()? I saw this in a couple other patches too.
> 
> Of course. Thanks for noticing. Fixed locally. Will be part of the next
> iteration.

I never got around to submitting the next jh/notes iteration before it was
merged to 'next', so here are Stephen's suggestions as a separate patch on
top of 'next'. AFAICS it does not conflict with tr/notes-display in 'pu'.


Have fun! :)

...Johan


 builtin-notes.c |   38 +++++++++++++++++---------------------
 1 files changed, 17 insertions(+), 21 deletions(-)

diff --git a/builtin-notes.c b/builtin-notes.c
index 123ecad..feb710a 100644
--- a/builtin-notes.c
+++ b/builtin-notes.c
@@ -171,12 +171,9 @@ static int parse_msg_arg(const struct option *opt, const char *arg, int unset)
 {
 	struct msg_arg *msg = opt->value;
 
-	if (!arg)
-		return -1;
-
 	strbuf_grow(&(msg->buf), strlen(arg) + 2);
 	if (msg->buf.len)
-		strbuf_addstr(&(msg->buf), "\n");
+		strbuf_addch(&(msg->buf), '\n');
 	strbuf_addstr(&(msg->buf), arg);
 	stripspace(&(msg->buf), 0);
 
@@ -188,11 +185,8 @@ static int parse_file_arg(const struct option *opt, const char *arg, int unset)
 {
 	struct msg_arg *msg = opt->value;
 
-	if (!arg)
-		return -1;
-
 	if (msg->buf.len)
-		strbuf_addstr(&(msg->buf), "\n");
+		strbuf_addch(&(msg->buf), '\n');
 	if (!strcmp(arg, "-")) {
 		if (strbuf_read(&(msg->buf), 0, 1024) < 0)
 			die_errno("cannot read '%s'", arg);
@@ -212,11 +206,8 @@ static int parse_reuse_arg(const struct option *opt, const char *arg, int unset)
 	enum object_type type;
 	unsigned long len;
 
-	if (!arg)
-		return -1;
-
 	if (msg->buf.len)
-		strbuf_addstr(&(msg->buf), "\n");
+		strbuf_addch(&(msg->buf), '\n');
 
 	if (get_sha1(arg, object))
 		die("Failed to resolve '%s' as a valid ref.", arg);
@@ -291,15 +282,20 @@ int cmd_notes(int argc, const char **argv, const char *prefix)
 	int given_object = 0, i = 1, retval = 0;
 	struct msg_arg msg = { 0, 0, STRBUF_INIT };
 	struct option options[] = {
-		OPT_GROUP("Notes options"),
-		OPT_CALLBACK('m', "message", &msg, "MSG",
-			     "note contents as a string", parse_msg_arg),
-		OPT_CALLBACK('F', "file", &msg, "FILE",
-			     "note contents in a file", parse_file_arg),
-		OPT_CALLBACK('c', "reedit-message", &msg, "OBJECT",
-			   "reuse and edit specified note object", parse_reedit_arg),
-		OPT_CALLBACK('C', "reuse-message", &msg, "OBJECT",
-			   "reuse specified note object", parse_reuse_arg),
+		OPT_GROUP("Notes contents options"),
+		{ OPTION_CALLBACK, 'm', "message", &msg, "MSG",
+			"note contents as a string", PARSE_OPT_NONEG,
+			parse_msg_arg},
+		{ OPTION_CALLBACK, 'F', "file", &msg, "FILE",
+			"note contents in a file", PARSE_OPT_NONEG,
+			parse_file_arg},
+		{ OPTION_CALLBACK, 'c', "reedit-message", &msg, "OBJECT",
+			"reuse and edit specified note object", PARSE_OPT_NONEG,
+			parse_reedit_arg},
+		{ OPTION_CALLBACK, 'C', "reuse-message", &msg, "OBJECT",
+			"reuse specified note object", PARSE_OPT_NONEG,
+			parse_reuse_arg},
+		OPT_GROUP("Other options"),
 		OPT_BOOLEAN('f', "force", &force, "replace existing notes"),
 		OPT_END()
 	};
-- 
1.7.0.rc1.141.gd3fd

-- 
Johan Herland, <johan@herland.net>
www.herland.net