[PATCH v4 4/6] cli: add support for --output parameter in notmuch count

[Jani Nikula]

Add support for --output=messages (which remains the default) and
--output=threads to notmuch count.

Signed-off-by: Jani Nikula <jani at nikula.org>
---
 NEWS            |    5 +++++
 notmuch-count.c |   18 ++++++++++++++++--
 notmuch.1       |   29 +++++++++++++++++++++++++----
 3 files changed, 46 insertions(+), 6 deletions(-)

diff --git a/NEWS b/NEWS
index bfdba7b..009811f 100644
--- a/NEWS
+++ b/NEWS
@@ -28,6 +28,11 @@ Add "notmuch search" --first and --maxitems options
   The search command now takes options --first=[-]N and --maxitems=N to limit
   the number of results shown.
 
+Add "notmuch count --output" option
+
+  The count command is now capable of counting threads in addition to
+  messages. This is selected using the new --output=(threads|messages) option.
+
 Notmuch 0.9 (2011-10-01)
 ========================
 
diff --git a/notmuch-count.c b/notmuch-count.c
index a35be40..20ce334 100644
--- a/notmuch-count.c
+++ b/notmuch-count.c
@@ -29,6 +29,7 @@ notmuch_count_command (void *ctx, int argc, char *argv[])
     notmuch_query_t *query;
     char *query_str;
     int i;
+    notmuch_bool_t output_messages = TRUE;
 
     argc--; argv++; /* skip subcommand argument */
 
@@ -37,7 +38,17 @@ notmuch_count_command (void *ctx, int argc, char *argv[])
 	    i++;
 	    break;
 	}
-	{
+	if (STRNCMP_LITERAL (argv[i], "--output=") == 0) {
+	    const char *opt = argv[i] + sizeof ("--output=") - 1;
+	    if (strcmp (opt, "threads") == 0) {
+		output_messages = FALSE;
+	    } else if (strcmp (opt, "messages") == 0) {
+		output_messages = TRUE;
+	    } else {
+		fprintf (stderr, "Invalid value for --output: %s\n", opt);
+		return 1;
+	    }
+	} else {
 	    fprintf (stderr, "Unrecognized option: %s\n", argv[i]);
 	    return 1;
 	}
@@ -71,7 +82,10 @@ notmuch_count_command (void *ctx, int argc, char *argv[])
 	return 1;
     }
 
-    printf ("%u\n", notmuch_query_count_messages(query));
+    if (output_messages)
+	printf ("%u\n", notmuch_query_count_messages (query));
+    else
+	printf ("%u\n", notmuch_query_count_threads (query));
 
     notmuch_query_destroy (query);
     notmuch_database_close (notmuch);
diff --git a/notmuch.1 b/notmuch.1
index c97334c..f53c183 100644
--- a/notmuch.1
+++ b/notmuch.1
@@ -374,14 +374,35 @@ section below for details of the supported syntax for <search-terms>.
 .RE
 .RS 4
 .TP 4
-.BR count " <search-term>..."
+.BR count " [options...] <search-term>..."
 
 Count messages matching the search terms.
 
-The number of matching messages is output to stdout.
+The number of matching messages (or threads) is output to stdout.
 
-With no search terms, a count of all messages in the database will be
-displayed.
+With no search terms, a count of all messages (or threads) in the database will
+be displayed.
+
+Supported options for
+.B count
+include
+.RS 4
+.TP 4
+.B \-\-output=(threads|messages)
+
+.RS 4
+.TP 4
+.B threads
+
+Output the number of matching threads.
+.RE
+.RS 4
+.TP 4
+.B messages
+
+Output the number of matching messages. This is the default.
+.RE
+.RE
 .RE
 .RE
 
-- 
1.7.5.4