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, 191 insertions, 0 deletions

diff --git a/em-format/e-mail-formatter-image.c b/em-format/e-mail-formatter-image.c
new file mode 100644
index 0000000000..890e9f3dcc
--- /dev/null
+++ b/em-format/e-mail-formatter-image.c
@@ -0,0 +1,191 @@
+/*
+ * image-any.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-formatter-extension.h>
+#include <em-format/e-mail-part-utils.h>
+#include <em-format/e-mail-parser.h>
+#include <em-format/e-mail-formatter.h>
+#include <em-format/e-mail-inline-filter.h>
+#include <e-util/e-util.h>
+
+#include <glib/gi18n-lib.h>
+#include <camel/camel.h>
+
+static const gchar *formatter_mime_types[] = { "image/gif", "image/jpeg",
+					       "image/png", "image/x-png",
+					       "image/x-bmp", "image/bmp",
+					       "image/svg", "image/x-cmu-raster",
+					       "image/x-ico",
+					       "image/x-portable-anymap",
+					       "image/x-portable-bitmap",
+					       "image/x-portable-graymap",
+					       "image/x-portable-pixmap",
+					       "image/x-xpixmap",
+					       "image/jpg", "image/pjpeg",
+					       "image/*", NULL };
+
+typedef struct _EMailFormatterImage {
+	GObject parent;
+} EMailFormatterImage;
+
+typedef struct _EMailFormatterImageClass {
+	GObjectClass parent_class;
+} EMailFormatterImageClass;
+
+static void e_mail_formatter_formatter_extension_interface_init (EMailFormatterExtensionInterface *iface);
+static void e_mail_formatter_mail_extension_interface_init (EMailExtensionInterface *iface);
+
+G_DEFINE_TYPE_EXTENDED (
+	EMailFormatterImage,
+	e_mail_formatter_image,
+	G_TYPE_OBJECT,
+	0,
+	G_IMPLEMENT_INTERFACE (
+		E_TYPE_MAIL_EXTENSION,
+		e_mail_formatter_mail_extension_interface_init)
+	G_IMPLEMENT_INTERFACE (
+		E_TYPE_MAIL_FORMATTER_EXTENSION,
+		e_mail_formatter_formatter_extension_interface_init));
+
+static gboolean
+emfe_image_format (EMailFormatterExtension *extension,
+                   EMailFormatter *formatter,
+                   EMailFormatterContext *context,
+                   EMailPart *part,
+                   CamelStream *stream,
+                   GCancellable *cancellable)
+{
+	gchar *content;
+	CamelDataWrapper *dw;
+	GByteArray *ba;
+	CamelStream *raw_content;
+
+	if (g_cancellable_is_cancelled (cancellable))
+		return FALSE;
+
+	dw = camel_medium_get_content (CAMEL_MEDIUM (part->part));
+	g_return_val_if_fail (dw, FALSE);
+
+	raw_content = camel_stream_mem_new ();
+	camel_data_wrapper_decode_to_stream_sync (dw, raw_content, cancellable, NULL);
+	ba = camel_stream_mem_get_byte_array (CAMEL_STREAM_MEM (raw_content));
+
+	if (context->mode == E_MAIL_FORMATTER_MODE_RAW) {
+
+		if (!e_mail_formatter_get_animate_images (formatter)) {
+
+			gchar *buff;
+			gsize len;
+
+			e_mail_part_animation_extract_frame (ba, &buff, &len);
+
+			camel_stream_write (stream, buff, len, cancellable, NULL);
+
+			g_free (buff);
+
+		} else {
+
+			camel_stream_write (
+				stream, (gchar *) ba->data,
+				ba->len, cancellable, NULL);
+		}
+
+	} else {
+
+		gchar *buffer;
+
+		if (!e_mail_formatter_get_animate_images (formatter)) {
+
+			gchar *buff;
+			gsize len;
+
+			e_mail_part_animation_extract_frame (ba, &buff, &len);
+
+			content = g_base64_encode ((guchar *) buff, len);
+			g_free (buff);
+
+		} else {
+			content = g_base64_encode ((guchar *) ba->data, ba->len);
+		}
+
+		/* The image is already base64-encrypted so we can directly
+		 * paste it to the output */
+		buffer = g_strdup_printf (
+			"<img src=\"data:%s;base64,%s\" style=\"max-width: 100%%;\" />",
+			part->mime_type ? part->mime_type : "image/*", content);
+
+		camel_stream_write_string (stream, buffer, cancellable, NULL);
+		g_free (buffer);
+		g_free (content);
+	}
+
+	g_object_unref (raw_content);
+
+	return TRUE;
+}
+
+static const gchar *
+emfe_image_get_display_name (EMailFormatterExtension *extension)
+{
+	return _("Regular Image");
+}
+
+static const gchar *
+emfe_image_get_description (EMailFormatterExtension *extension)
+{
+	return _("Display part as an image");
+}
+
+static const gchar **
+emfe_image_mime_types (EMailExtension *extension)
+{
+	return formatter_mime_types;
+}
+
+static void
+e_mail_formatter_image_class_init (EMailFormatterImageClass *klass)
+{
+	e_mail_formatter_image_parent_class = g_type_class_peek_parent (klass);
+}
+
+static void
+e_mail_formatter_formatter_extension_interface_init (EMailFormatterExtensionInterface *iface)
+{
+	iface->format = emfe_image_format;
+	iface->get_display_name = emfe_image_get_display_name;
+	iface->get_description = emfe_image_get_description;
+}
+
+static void
+e_mail_formatter_mail_extension_interface_init (EMailExtensionInterface *iface)
+{
+	iface->mime_types = emfe_image_mime_types;
+}
+
+static void
+e_mail_formatter_image_init (EMailFormatterImage *formatter)
+{
+
+}