show: Simplify new text formatter code

This makes the text formatter take advantage of the new code
structure.  The previously duplicated header logic is now unified,
several things that we used to compute repeatedly across different
callbacks are now computed once, and the code is simpler overall and
32% shorter.

Unifying the header logic causes this to format some dates slightly
differently, so the two affected test cases are updated.

1 files changed, 22 insertions, 65 deletions

diff --git a/notmuch-show.c b/notmuch-show.c
index 6a890b2..816e0f8 100644
--- a/notmuch-show.c
+++ b/notmuch-show.c
@@ -727,67 +727,48 @@ format_part_text (const void *ctx, mime_node_t *node,
     GMimeObject *meta = node->envelope_part ?
 	GMIME_OBJECT (node->envelope_part) : node->part;
     GMimeContentType *content_type = g_mime_object_get_content_type (meta);
+    const notmuch_bool_t leaf = GMIME_IS_PART (node->part);
+    const char *part_type;
     int i;
 
     if (node->envelope_file) {
 	notmuch_message_t *message = node->envelope_file;
-	const char *headers[] = {
-	    "Subject", "From", "To", "Cc", "Bcc", "Date"
-	};
-	const char *name, *value;
-	unsigned int i;
-
-	printf ("\fmessage{ ");
-	printf ("id:%s depth:%d match:%d filename:%s\n",
+
+	part_type = "message";
+	printf ("\f%s{ id:%s depth:%d match:%d filename:%s\n",
+		part_type,
 		notmuch_message_get_message_id (message),
 		indent,
 		notmuch_message_get_flag (message, NOTMUCH_MESSAGE_FLAG_MATCH),
 		notmuch_message_get_filename (message));
-
-	printf ("\fheader{\n");
-
-	printf ("%s\n", _get_one_line_summary (ctx, message));
-
-	for (i = 0; i < ARRAY_SIZE (headers); i++) {
-	    name = headers[i];
-	    value = notmuch_message_get_header (message, name);
-	    if (value && strlen (value))
-		printf ("%s: %s\n", name, value);
-	}
-	printf ("\fheader}\n");
     } else {
 	GMimeContentDisposition *disposition = g_mime_object_get_content_disposition (meta);
 	const char *cid = g_mime_object_get_content_id (meta);
+	const char *filename = leaf ?
+	    g_mime_part_get_filename (GMIME_PART (node->part)) : NULL;
 
 	if (disposition &&
 	    strcmp (disposition->disposition, GMIME_DISPOSITION_ATTACHMENT) == 0)
-	{
-	    printf ("\fattachment{ ID: %d", node->part_num);
-
-	} else {
-
-	    printf ("\fpart{ ID: %d", node->part_num);
-	}
-
-	if (GMIME_IS_PART (node->part))
-	{
-	    const char *filename = g_mime_part_get_filename (GMIME_PART (node->part));
-	    if (filename)
-		printf (", Filename: %s", filename);
-	}
+	    part_type = "attachment";
+	else
+	    part_type = "part";
 
+	printf ("\f%s{ ID: %d", part_type, node->part_num);
+	if (filename)
+	    printf (", Filename: %s", filename);
 	if (cid)
 	    printf (", Content-id: %s", cid);
-
 	printf (", Content-type: %s\n", g_mime_content_type_to_string (content_type));
     }
 
-    if (node->envelope_part) {
+    if (GMIME_IS_MESSAGE (node->part)) {
 	GMimeMessage *message = GMIME_MESSAGE (node->part);
 	InternetAddressList *recipients;
 	const char *recipients_string;
 
 	printf ("\fheader{\n");
+	if (node->envelope_file)
+	    printf ("%s\n", _get_one_line_summary (ctx, node->envelope_file));
 	printf ("Subject: %s\n", g_mime_message_get_subject (message));
 	printf ("From: %s\n", g_mime_message_get_sender (message));
 	recipients = g_mime_message_get_recipients (message, GMIME_RECIPIENT_TYPE_TO);
@@ -800,9 +781,11 @@ format_part_text (const void *ctx, mime_node_t *node,
 	    printf ("Cc: %s\n", recipients_string);
 	printf ("Date: %s\n", g_mime_message_get_date_as_string (message));
 	printf ("\fheader}\n");
+
+	printf ("\fbody{\n");
     }
 
-    if (!node->envelope_file) {
+    if (leaf) {
 	if (g_mime_content_type_is_type (content_type, "text", "*") &&
 	    !g_mime_content_type_is_type (content_type, "text", "html"))
 	{
@@ -810,45 +793,19 @@ format_part_text (const void *ctx, mime_node_t *node,
 	    g_mime_stream_file_set_owner (GMIME_STREAM_FILE (stream_stdout), FALSE);
 	    show_text_part_content (node->part, stream_stdout);
 	    g_object_unref(stream_stdout);
-	}
-	else if (g_mime_content_type_is_type (content_type, "multipart", "*") ||
-		 g_mime_content_type_is_type (content_type, "message", "rfc822"))
-	{
-	    /* Do nothing for multipart since its content will be printed
-	     * when recursing. */
-	}
-	else
-	{
+	} else {
 	    printf ("Non-text part: %s\n",
 		    g_mime_content_type_to_string (content_type));
 	}
     }
 
-    if (GMIME_IS_MESSAGE (node->part))
-	printf ("\fbody{\n");
-
     for (i = 0; i < node->nchildren; i++)
 	format_part_text (ctx, mime_node_child (node, i), indent, params);
 
     if (GMIME_IS_MESSAGE (node->part))
 	printf ("\fbody}\n");
 
-    if (node->envelope_file) {
-	printf ("\fmessage}\n");
-    } else {
-	GMimeContentDisposition *disposition;
-
-	disposition = g_mime_object_get_content_disposition (meta);
-	if (disposition &&
-	    strcmp (disposition->disposition, GMIME_DISPOSITION_ATTACHMENT) == 0)
-	{
-	    printf ("\fattachment}\n");
-	}
-	else
-	{
-	    printf ("\fpart}\n");
-	}
-    }
+    printf ("\f%s}\n", part_type);
 }
 
 static void