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, 211 insertions, 0 deletions

diff --git a/em-format/e-mail-parser-message-external.c b/em-format/e-mail-parser-message-external.c
new file mode 100644
index 0000000000..8c02a3ef3b
--- /dev/null
+++ b/em-format/e-mail-parser-message-external.c
@@ -0,0 +1,211 @@
+/*
+ * e-mail-parser-message-external.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 <em-format/e-mail-parser-extension.h>
+#include <em-format/e-mail-parser.h>
+#include <e-util/e-util.h>
+
+#include <glib/gi18n-lib.h>
+#include <camel/camel.h>
+
+#include <string.h>
+#include <ctype.h>
+
+typedef struct _EMailParserMessageExternal {
+	GObject parent;
+} EMailParserMessageExternal;
+
+typedef struct _EMailParserMessageExternalClass {
+	GObjectClass parent_class;
+} EMailParserMessageExternalClass;
+
+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 (
+	EMailParserMessageExternal,
+	e_mail_parser_message_external,
+	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/external-body",
+					    NULL };
+
+static GSList *
+empe_msg_external_parse (EMailParserExtension *extension,
+                         EMailParser *parser,
+                         CamelMimePart *part,
+                         GString *part_id,
+                         GCancellable *cancellable)
+{
+	EMailPart *mail_part;
+	CamelMimePart *newpart;
+	CamelContentType *type;
+	const gchar *access_type;
+	gchar *url = NULL, *desc = NULL;
+	gchar *content;
+	gint len;
+	gchar *mime_type;
+
+	if (g_cancellable_is_cancelled (cancellable))
+		return NULL;
+
+	newpart = camel_mime_part_new ();
+
+	/* needs to be cleaner */
+	type = camel_mime_part_get_content_type (part);
+	access_type = camel_content_type_param (type, "access-type");
+	if (!access_type) {
+		const gchar *msg = _("Malformed external-body part");
+		mime_type = g_strdup ("text/plain");
+		camel_mime_part_set_content (newpart, msg, strlen (msg), mime_type);
+		goto addPart;
+	}
+
+	if (!g_ascii_strcasecmp(access_type, "ftp") ||
+	    !g_ascii_strcasecmp(access_type, "anon-ftp")) {
+		const gchar *name, *site, *dir, *mode;
+		gchar *path;
+		gchar ftype[16];
+
+		name = camel_content_type_param (type, "name");
+		site = camel_content_type_param (type, "site");
+		dir = camel_content_type_param (type, "directory");
+		mode = camel_content_type_param (type, "mode");
+		if (name == NULL || site == NULL)
+			goto fail;
+
+		/* Generate the path. */
+		if (dir)
+			path = g_strdup_printf("/%s/%s", *dir=='/'?dir+1:dir, name);
+		else
+			path = g_strdup_printf("/%s", *name=='/'?name+1:name);
+
+		if (mode && *mode)
+			sprintf(ftype, ";type=%c",  *mode);
+		else
+			ftype[0] = 0;
+
+		url = g_strdup_printf ("ftp://%s%s%s", site, path, ftype);
+		g_free (path);
+		desc = g_strdup_printf (_("Pointer to FTP site (%s)"), url);
+	} else if (!g_ascii_strcasecmp (access_type, "local-file")) {
+		const gchar *name, *site;
+
+		name = camel_content_type_param (type, "name");
+		site = camel_content_type_param (type, "site");
+		if (name == NULL)
+			goto fail;
+
+		url = g_filename_to_uri (name, NULL, NULL);
+		if (site)
+			desc = g_strdup_printf(_("Pointer to local file (%s) valid at site \"%s\""), name, site);
+		else
+			desc = g_strdup_printf(_("Pointer to local file (%s)"), name);
+	} else if (!g_ascii_strcasecmp (access_type, "URL")) {
+		const gchar *urlparam;
+		gchar *s, *d;
+
+		/* RFC 2017 */
+		urlparam = camel_content_type_param (type, "url");
+		if (urlparam == NULL)
+			goto fail;
+
+		/* For obscure MIMEy reasons, the URL may be split into words */
+		url = g_strdup (urlparam);
+		s = d = url;
+		while (*s) {
+			if (!isspace ((guchar) * s))
+				*d++ = *s;
+			s++;
+		}
+		*d = 0;
+		desc = g_strdup_printf (_("Pointer to remote data (%s)"), url);
+	} else {
+		goto fail;
+	}
+
+	mime_type = g_strdup ("text/html");
+	content = g_strdup_printf ("<a href=\"%s\">%s</a>", url, desc);
+	camel_mime_part_set_content (newpart, content, strlen (content), mime_type);
+	g_free (content);
+
+	g_free (url);
+	g_free (desc);
+
+	goto addPart;
+
+fail:
+	content = g_strdup_printf (
+		_("Pointer to unknown external data (\"%s\" type)"),
+		access_type);
+	mime_type = g_strdup ("text/plain");
+	camel_mime_part_set_content (newpart, content, strlen (content), mime_type);
+	g_free (content);
+
+addPart:
+	len = part_id->len;
+	g_string_append (part_id, ".msg_external");
+	mail_part = e_mail_part_new (part, part_id->str);
+	mail_part->mime_type = mime_type;
+	g_string_truncate (part_id, len);
+
+	return g_slist_append (NULL, mail_part);
+}
+
+static const gchar **
+empe_msg_external_mime_types (EMailExtension *extension)
+{
+	return parser_mime_types;
+}
+
+static void
+e_mail_parser_message_external_class_init (EMailParserMessageExternalClass *klass)
+{
+	e_mail_parser_message_external_parent_class = g_type_class_peek_parent (klass);
+}
+
+static void
+e_mail_parser_parser_extension_interface_init (EMailParserExtensionInterface *iface)
+{
+	iface->parse = empe_msg_external_parse;
+}
+
+static void
+e_mail_parser_mail_extension_interface_init (EMailExtensionInterface *iface)
+{
+	iface->mime_types = empe_msg_external_mime_types;
+}
+
+static void
+e_mail_parser_message_external_init (EMailParserMessageExternal *parser)
+{
+
+}