Mail formatter rewrite

All mail-parsing and formatting code has been moved to em-format.
Parsing is handeled by EMailParser class, formatting by EMailFormatter.
Both classes have registry which hold extensions - simple classes
that do actual parsing and formatting. Each supported mime-type
has it's own parser and formatter extension class.

1 files changed, 174 insertions, 0 deletions

diff --git a/em-format/e-mail-parser-message-rfc822.c b/em-format/e-mail-parser-message-rfc822.c
new file mode 100644
index 0000000000..75b0306d84
--- /dev/null
+++ b/em-format/e-mail-parser-message-rfc822.c
@@ -0,0 +1,174 @@
+/*
+ * e-mail-parser-message-rfc822.c
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with the program; if not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include "e-mail-format-extensions.h"
+
+#include <glib/gi18n-lib.h>
+#include <glib-object.h>
+
+#include <em-format/e-mail-parser-extension.h>
+#include <em-format/e-mail-parser.h>
+#include <em-format/e-mail-part-list.h>
+#include <em-format/e-mail-part-utils.h>
+#include <e-util/e-util.h>
+
+#include <camel/camel.h>
+
+#include <string.h>
+
+typedef struct _EMailParserMessageRFC822 {
+	GObject parent;
+} EMailParserMessageRFC822;
+
+typedef struct _EMailParserMessageRFC822Class {
+	GObjectClass parent_class;
+} EMailParserMessageRFC822Class;
+
+static void e_mail_parser_parser_extension_interface_init (EMailParserExtensionInterface *iface);
+static void e_mail_parser_mail_extension_interface_init (EMailExtensionInterface *iface);
+
+G_DEFINE_TYPE_EXTENDED (
+	EMailParserMessageRFC822,
+	e_mail_parser_message_rfc822,
+	G_TYPE_OBJECT,
+	0,
+	G_IMPLEMENT_INTERFACE (
+		E_TYPE_MAIL_EXTENSION,
+		e_mail_parser_mail_extension_interface_init)
+	G_IMPLEMENT_INTERFACE (
+		E_TYPE_MAIL_PARSER_EXTENSION,
+		e_mail_parser_parser_extension_interface_init));
+
+static const gchar* parser_mime_types[] = { "message/rfc822",
+					    "message/news",
+					    "message/*",
+					    NULL };
+
+static GSList *
+empe_msg_rfc822_parse (EMailParserExtension *extension,
+                       EMailParser *eparser,
+                       CamelMimePart *part,
+                       GString *part_id,
+                       GCancellable *cancellable)
+{
+	GSList *parts = NULL;
+	EMailPart *mail_part;
+	gint len;
+	CamelMimePart *message;
+	CamelDataWrapper *dw;
+	CamelStream *new_stream;
+	CamelMimeParser *mime_parser;
+	CamelContentType *ct;
+
+	len = part_id->len;
+	g_string_append (part_id, ".rfc822");
+
+        /* Create an empty PURI that will represent start of the RFC message */
+	mail_part = e_mail_part_new (part, part_id->str);
+	mail_part->mime_type = g_strdup ("message/rfc822");
+	parts = g_slist_append (NULL, mail_part);
+
+	/* Sometime the _actual_ message is encapsulated in another CamelMimePart,
+	 * sometimes the CamelMimePart actually represents the RFC822 message */
+	ct = camel_mime_part_get_content_type (part);
+	if (camel_content_type_is (ct, "message", "rfc822")) {
+		new_stream = camel_stream_mem_new ();
+		mime_parser = camel_mime_parser_new ();
+		message = (CamelMimePart *) camel_mime_message_new ();
+
+		dw = camel_medium_get_content (CAMEL_MEDIUM (part));
+		camel_data_wrapper_decode_to_stream_sync (
+			dw, new_stream, cancellable, NULL);
+		g_seekable_seek (
+			G_SEEKABLE (new_stream), 0, G_SEEK_SET, cancellable, NULL);
+		camel_mime_parser_init_with_stream (
+			mime_parser, new_stream, NULL);
+		camel_mime_part_construct_from_parser_sync (
+			message, mime_parser, cancellable, NULL);
+
+		g_object_unref (mime_parser);
+		g_object_unref (new_stream);
+	} else {
+		message = g_object_ref (part);
+	}
+
+	parts = g_slist_concat (parts, e_mail_parser_parse_part_as (
+						eparser, message, part_id,
+						"application/vnd.evolution.message",
+						cancellable));
+
+	g_object_unref (message);
+
+        /* Add another generic EMailPart that represents end of the RFC message.
+         * The em_format_write() function will skip all parts between the ".rfc822"
+         * part and ".rfc822.end" part as they will be rendered in an <iframe> */
+	g_string_append (part_id, ".end");
+	mail_part = e_mail_part_new (message, part_id->str);
+	mail_part->is_hidden = TRUE;
+	parts = g_slist_append (parts, mail_part);
+	g_string_truncate (part_id, len);
+
+	if (e_mail_part_is_attachment (message)) {
+		return e_mail_parser_wrap_as_attachment (
+			eparser, message, parts, part_id, cancellable);
+	}
+
+	return parts;
+}
+
+static guint32
+empe_msg_rfc822_get_flags (EMailParserExtension *extension)
+{
+	return E_MAIL_PARSER_EXTENSION_INLINE |
+		E_MAIL_PARSER_EXTENSION_COMPOUND_TYPE;
+}
+
+static const gchar **
+empe_msg_rfc822_mime_types (EMailExtension *extension)
+{
+	return parser_mime_types;
+}
+
+static void
+e_mail_parser_message_rfc822_class_init (EMailParserMessageRFC822Class *klass)
+{
+	e_mail_parser_message_rfc822_parent_class = g_type_class_peek_parent (klass);
+}
+
+static void
+e_mail_parser_parser_extension_interface_init (EMailParserExtensionInterface *iface)
+{
+	iface->parse = empe_msg_rfc822_parse;
+	iface->get_flags = empe_msg_rfc822_get_flags;
+}
+
+static void
+e_mail_parser_mail_extension_interface_init (EMailExtensionInterface *iface)
+{
+	iface->mime_types = empe_msg_rfc822_mime_types;
+}
+
+static void
+e_mail_parser_message_rfc822_init (EMailParserMessageRFC822 *parser)
+{
+
+}