From: Jani Nikula <jani@nikula.org>
To: Jani Nikula <jani@nikula.org>,
	notmuch@notmuchmail.org
Cc: Daniel Kahn Gillmor <dkg@fifthhorseman.net>
Subject: [RFC PATCH 3/6] cli/reply: return internet address list from get
 header funcs
Date: Sun, 19 Jun 2016 23:15:31 +0300
Message-Id:
 <c4c94e14896bd50b1653dd54662bac7c5bfdd03a.1466366737.git.jani@nikula.org>
In-Reply-To: <cover.1466366737.git.jani@nikula.org>
References: <cover.1466284726.git.jani@nikula.org>
 <cover.1466366737.git.jani@nikula.org>
In-Reply-To: <cover.1466366737.git.jani@nikula.org>
References: <cover.1466366737.git.jani@nikula.org>
Precedence: list

Pass in GMimeMessage to simplify To/Cc/Bcc headers. We'll eventually
remove the notmuch message passing altogether, but keep both for now
to not make too big changes at once.

Get rid of an intermediate function.

The small annoyance is the ownership differences in the address lists.
---
 notmuch-reply.c | 73 ++++++++++++++++++++++++---------------------------------
 1 file changed, 30 insertions(+), 43 deletions(-)

diff --git a/notmuch-reply.c b/notmuch-reply.c
index d90f46f9bed3..98034485c546 100644
--- a/notmuch-reply.c
+++ b/notmuch-reply.c
@@ -227,31 +227,6 @@ scan_address_list (InternetAddressList *list,
     return n;
 }
 
-/* Scan addresses in 'recipients'.
- *
- * See the documentation of scan_address_list() above. This function
- * does exactly the same, but converts 'recipients' to an
- * InternetAddressList first.
- */
-static unsigned int
-scan_address_string (const char *recipients,
-		     notmuch_config_t *config,
-		     GMimeMessage *message,
-		     GMimeRecipientType type,
-		     const char **user_from)
-{
-    InternetAddressList *list;
-
-    if (recipients == NULL)
-	return 0;
-
-    list = internet_address_list_parse_string (recipients);
-    if (list == NULL)
-	return 0;
-
-    return scan_address_list (list, config, message, type, user_from);
-}
-
 /* Does the address in the Reply-To header of 'message' already appear
  * in either the 'To' or 'Cc' header of the message?
  */
@@ -287,11 +262,12 @@ reply_to_header_is_redundant (notmuch_message_t *message, const char *reply_to)
     return 0;
 }
 
-static const char *get_sender(notmuch_message_t *message)
+static InternetAddressList *get_sender(notmuch_message_t *message,
+				       GMimeMessage *mime_message)
 {
     const char *reply_to;
 
-    reply_to = notmuch_message_get_header (message, "reply-to");
+    reply_to = g_mime_message_get_reply_to (mime_message);
     if (reply_to && *reply_to) {
         /*
 	 * Some mailing lists munge the Reply-To header despite it
@@ -307,25 +283,32 @@ static const char *get_sender(notmuch_message_t *message)
 	 * will always appear in the reply if reply_all is true.
 	 */
 	if (! reply_to_header_is_redundant (message, reply_to))
-	    return reply_to;
+	    return internet_address_list_parse_string (reply_to);
     }
 
-    return notmuch_message_get_header (message, "from");
+    return internet_address_list_parse_string (
+	g_mime_message_get_sender (mime_message));
 }
 
-static const char *get_to(notmuch_message_t *message)
+static InternetAddressList *get_to(unused(notmuch_message_t *message),
+				   GMimeMessage *mime_message)
 {
-    return notmuch_message_get_header (message, "to");
+    return g_mime_message_get_recipients (mime_message,
+					  GMIME_RECIPIENT_TYPE_TO);
 }
 
-static const char *get_cc(notmuch_message_t *message)
+static InternetAddressList *get_cc(unused(notmuch_message_t *message),
+				   GMimeMessage *mime_message)
 {
-    return notmuch_message_get_header (message, "cc");
+    return g_mime_message_get_recipients (mime_message,
+					  GMIME_RECIPIENT_TYPE_CC);
 }
 
-static const char *get_bcc(notmuch_message_t *message)
+static InternetAddressList *get_bcc(unused(notmuch_message_t *message),
+				    GMimeMessage *mime_message)
 {
-    return notmuch_message_get_header (message, "bcc");
+    return g_mime_message_get_recipients (mime_message,
+					  GMIME_RECIPIENT_TYPE_BCC);
 }
 
 /* Augment the recipients of 'reply' from the "Reply-to:", "From:",
@@ -344,10 +327,12 @@ static const char *
 add_recipients_from_message (GMimeMessage *reply,
 			     notmuch_config_t *config,
 			     notmuch_message_t *message,
+			     GMimeMessage *mime_message,
 			     notmuch_bool_t reply_all)
 {
     struct {
-	const char * (*get_header)(notmuch_message_t *message);
+	InternetAddressList * (*get_header)(notmuch_message_t *message,
+					    GMimeMessage *mime_message);
 	GMimeRecipientType recipient_type;
     } reply_to_map[] = {
 	{ get_sender,	GMIME_RECIPIENT_TYPE_TO },
@@ -360,12 +345,12 @@ add_recipients_from_message (GMimeMessage *reply,
     unsigned int n = 0;
 
     for (i = 0; i < ARRAY_SIZE (reply_to_map); i++) {
-	const char *recipients;
+	InternetAddressList *recipients;
 
-	recipients = reply_to_map[i].get_header (message);
+	recipients = reply_to_map[i].get_header (message, mime_message);
 
-	n += scan_address_string (recipients, config, reply,
-				  reply_to_map[i].recipient_type, &from_addr);
+	n += scan_address_list (recipients, config, reply,
+				reply_to_map[i].recipient_type, &from_addr);
 
 	if (!reply_all && n) {
 	    /* Stop adding new recipients in reply-to-sender mode if
@@ -536,6 +521,7 @@ static GMimeMessage *
 create_reply_message(void *ctx,
 		     notmuch_config_t *config,
 		     notmuch_message_t *message,
+		     GMimeMessage *mime_message,
 		     notmuch_bool_t reply_all,
 		     notmuch_bool_t limited)
 {
@@ -566,8 +552,8 @@ create_reply_message(void *ctx,
 
     g_mime_object_set_header (GMIME_OBJECT (reply), "References", references);
 
-    from_addr = add_recipients_from_message (reply, config,
-					     message, reply_all);
+    from_addr = add_recipients_from_message (reply, config, message,
+					     mime_message, reply_all);
 
     /* The above is all that is needed for limited headers. */
     if (limited)
@@ -666,7 +652,8 @@ static int do_reply(notmuch_config_t *config,
 	if (mime_node_open (config, message, &params->crypto, &node))
 	    return 1;
 
-	reply = create_reply_message (config, config, message, reply_all,
+	reply = create_reply_message (config, config, message,
+				      GMIME_MESSAGE (node->part), reply_all,
 				      format == FORMAT_HEADERS_ONLY);
 	if (!reply)
 	    return 1;
-- 
2.1.4