From: Adam Wolfe Gordon <awg+notmuch@xvx.ca>
To: notmuch@notmuchmail.org
Subject: [PATCH v6 05/10] reply: Add a JSON reply format.
Date: Tue, 21 Feb 2012 23:46:34 -0700
Message-Id: <1329893199-21630-6-git-send-email-awg+notmuch@xvx.ca>
In-Reply-To: <1329893199-21630-1-git-send-email-awg+notmuch@xvx.ca>
References: <1329893199-21630-1-git-send-email-awg+notmuch@xvx.ca>
Precedence: list

This new JSON format for replies includes headers generated for a
reply message as well as the headers of the original message.  Using
this data, a client can intelligently create a reply. For example, the
emacs client will be able to create replies with quoted HTML parts by
parsing the HTML parts.
---
 notmuch-client.h |   10 ++++++++--
 notmuch-reply.c  |   49 +++++++++++++++++++++++++++++++++++++++++++++++++
 notmuch-show.c   |   30 ++++++++++++++++++++++--------
 test/multipart   |    1 -
 4 files changed, 79 insertions(+), 11 deletions(-)

diff --git a/notmuch-client.h b/notmuch-client.h
index f4a62cc..ef4eaba 100644
--- a/notmuch-client.h
+++ b/notmuch-client.h
@@ -62,13 +62,13 @@
 #define STRINGIFY(s) STRINGIFY_(s)
 #define STRINGIFY_(s) #s
 
-struct mime_node;
+typedef struct mime_node mime_node_t;
 struct notmuch_show_params;
 
 typedef struct notmuch_show_format {
     const char *message_set_start;
     void (*part) (const void *ctx,
-		  struct mime_node *node, int indent,
+		  mime_node_t *node, int indent,
 		  const struct notmuch_show_params *params);
     const char *message_start;
     void (*message) (const void *ctx,
@@ -191,6 +191,12 @@ show_message_body (notmuch_message_t *message,
 notmuch_status_t
 show_one_part (const char *filename, int part);
 
+void
+format_part_json (const void *ctx, mime_node_t *node, notmuch_bool_t first);
+
+void
+format_headers_json (const void *ctx, GMimeMessage *message, notmuch_bool_t reply);
+
 char *
 json_quote_chararray (const void *ctx, const char *str, const size_t len);
 
diff --git a/notmuch-reply.c b/notmuch-reply.c
index 177e6ca..017c6ae 100644
--- a/notmuch-reply.c
+++ b/notmuch-reply.c
@@ -601,6 +601,51 @@ notmuch_reply_format_default(void *ctx,
     return 0;
 }
 
+static int
+notmuch_reply_format_json(void *ctx,
+			  notmuch_config_t *config,
+			  notmuch_query_t *query,
+			  notmuch_show_params_t *params,
+			  notmuch_bool_t reply_all)
+{
+    GMimeMessage *reply;
+    notmuch_messages_t *messages;
+    notmuch_message_t *message;
+    mime_node_t *node;
+
+    if (notmuch_query_count_messages (query) != 1) {
+	fprintf (stderr, "Error: search term did not match precisely one message.\n");
+	return 1;
+    }
+
+    messages = notmuch_query_search_messages (query);
+    message = notmuch_messages_get (messages);
+    if (mime_node_open (ctx, message, params->cryptoctx, params->decrypt,
+			&node) != NOTMUCH_STATUS_SUCCESS)
+	return 1;
+
+    reply = create_reply_message (ctx, config, message, reply_all);
+    if (!reply)
+	return 1;
+
+    /* The headers of the reply message we've created */
+    printf ("{\"reply-headers\": ");
+    format_headers_json (ctx, reply, TRUE);
+    g_object_unref (G_OBJECT (reply));
+    reply = NULL;
+
+    /* Start the original */
+    printf (", \"original\": ");
+
+    format_part_json (ctx, node, TRUE);
+
+    /* End */
+    printf ("}\n");
+    notmuch_message_destroy (message);
+
+    return 0;
+}
+
 /* This format is currently tuned for a git send-email --notmuch hook */
 static int
 notmuch_reply_format_headers_only(void *ctx,
@@ -663,6 +708,7 @@ notmuch_reply_format_headers_only(void *ctx,
 
 enum {
     FORMAT_DEFAULT,
+    FORMAT_JSON,
     FORMAT_HEADERS_ONLY,
 };
 
@@ -682,6 +728,7 @@ notmuch_reply_command (void *ctx, int argc, char *argv[])
     notmuch_opt_desc_t options[] = {
 	{ NOTMUCH_OPT_KEYWORD, &format, "format", 'f',
 	  (notmuch_keyword_t []){ { "default", FORMAT_DEFAULT },
+				  { "json", FORMAT_JSON },
 				  { "headers-only", FORMAT_HEADERS_ONLY },
 				  { 0, 0 } } },
 	{ NOTMUCH_OPT_KEYWORD, &reply_all, "reply-to", 'r',
@@ -700,6 +747,8 @@ notmuch_reply_command (void *ctx, int argc, char *argv[])
 
     if (format == FORMAT_HEADERS_ONLY)
 	reply_format_func = notmuch_reply_format_headers_only;
+    else if (format == FORMAT_JSON)
+	reply_format_func = notmuch_reply_format_json;
     else
 	reply_format_func = notmuch_reply_format_default;
 
diff --git a/notmuch-show.c b/notmuch-show.c
index 6a171a4..2126d78 100644
--- a/notmuch-show.c
+++ b/notmuch-show.c
@@ -290,8 +290,8 @@ format_headers_message_part_text (GMimeMessage *message)
     printf ("Date: %s\n", g_mime_message_get_date_as_string (message));
 }
 
-static void
-format_headers_json (const void *ctx, GMimeMessage *message)
+void
+format_headers_json (const void *ctx, GMimeMessage *message, notmuch_bool_t reply)
 {
     void *local = talloc_new (ctx);
     InternetAddressList *recipients;
@@ -315,9 +315,23 @@ format_headers_json (const void *ctx, GMimeMessage *message)
 	printf (", %s: %s",
 		json_quote_str (local, "Cc"),
 		json_quote_str (local, recipients_string));
-    printf (", %s: %s}",
-	    json_quote_str (local, "Date"),
-	    json_quote_str (local, g_mime_message_get_date_as_string (message)));
+
+    if (!reply)
+	printf (", %s: %s",
+		json_quote_str (local, "Date"),
+		json_quote_str (local, g_mime_message_get_date_as_string (message)));
+
+    if (reply) {
+	printf (", %s: %s",
+		json_quote_str (local, "In-reply-to"),
+		json_quote_str (local, g_mime_object_get_header (GMIME_OBJECT (message), "In-reply-to")));
+
+	printf (", %s: %s",
+		json_quote_str (local, "References"),
+		json_quote_str (local, g_mime_object_get_header (GMIME_OBJECT (message), "References")));
+    }
+
+    printf ("}");
 
     talloc_free (local);
 }
@@ -652,7 +666,7 @@ format_part_text (const void *ctx, mime_node_t *node,
     printf ("\f%s}\n", part_type);
 }
 
-static void
+void
 format_part_json (const void *ctx, mime_node_t *node, notmuch_bool_t first)
 {
     /* Any changes to the JSON format should be reflected in the file
@@ -663,7 +677,7 @@ format_part_json (const void *ctx, mime_node_t *node, notmuch_bool_t first)
 	format_message_json (ctx, node->envelope_file);
 
 	printf ("\"headers\": ");
-	format_headers_json (ctx, GMIME_MESSAGE (node->part));
+	format_headers_json (ctx, GMIME_MESSAGE (node->part), FALSE);
 
 	printf (", \"body\": [");
 	format_part_json (ctx, mime_node_child (node, 0), first);
@@ -737,7 +751,7 @@ format_part_json (const void *ctx, mime_node_t *node, notmuch_bool_t first)
     } else if (GMIME_IS_MESSAGE (node->part)) {
 	printf (", \"content\": [{");
 	printf ("\"headers\": ");
-	format_headers_json (local, GMIME_MESSAGE (node->part));
+	format_headers_json (local, GMIME_MESSAGE (node->part), FALSE);
 
 	printf (", \"body\": [");
 	terminator = "]}]";
diff --git a/test/multipart b/test/multipart
index f102294..e7abcc2 100755
--- a/test/multipart
+++ b/test/multipart
@@ -590,7 +590,6 @@ EOF
 test_expect_equal_file OUTPUT EXPECTED
 
 test_begin_subtest "'notmuch reply' to a multipart message with json format"
-test_subtest_known_broken
 notmuch reply --format=json 'id:87liy5ap00.fsf@yoom.home.cworth.org' | notmuch_json_show_sanitize >OUTPUT
 cat <<EOF >EXPECTED
 {"reply-headers": {"Subject": "Re: Multipart message",
-- 
1.7.5.4