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, 212 insertions, 0 deletions

diff --git a/em-format/e-mail-formatter-text-plain.c b/em-format/e-mail-formatter-text-plain.c
new file mode 100644
index 0000000000..631c46a3bc
--- /dev/null
+++ b/em-format/e-mail-formatter-text-plain.c
@@ -0,0 +1,212 @@
+/*
+ * e-mail-formatter-text-plain.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-formatter-extension.h>
+#include <em-format/e-mail-formatter.h>
+#include <em-format/e-mail-inline-filter.h>
+#include <em-format/e-mail-part-utils.h>
+#include <e-util/e-util.h>
+
+#include <glib/gi18n-lib.h>
+#include <camel/camel.h>
+
+static const gchar *formatter_mime_types[] = { "text/plain", "text/*", NULL };
+
+typedef struct _EMailFormatterTextPlain {
+	GObject parent;
+} EMailFormatterTextPlain;
+
+typedef struct _EMailFormatterTextPlainClass {
+	GObjectClass parent_class;
+} EMailFormatterTextPlainClass;
+
+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 (
+	EMailFormatterTextPlain,
+	e_mail_formatter_text_plain,
+	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_text_plain_format (EMailFormatterExtension *extension,
+                        EMailFormatter *formatter,
+                        EMailFormatterContext *context,
+                        EMailPart *part,
+                        CamelStream *stream,
+                        GCancellable *cancellable)
+{
+	CamelDataWrapper *dw;
+	CamelStream *filtered_stream;
+	CamelMimeFilter *html_filter;
+	gchar *content;
+	const gchar *format;
+	guint32 filter_flags;
+	guint32 rgb;
+
+	if (g_cancellable_is_cancelled (cancellable))
+		return FALSE;
+
+	if ((context->mode == E_MAIL_FORMATTER_MODE_RAW) ||
+	    (context->mode == E_MAIL_FORMATTER_MODE_PRINTING)) {
+
+		if (context->mode == E_MAIL_FORMATTER_MODE_RAW) {
+			gchar *header;
+			header = e_mail_formatter_get_html_header (formatter);
+			camel_stream_write_string (stream, header, cancellable, NULL);
+			g_free (header);
+
+			/* No need for body margins within <iframe> */
+			camel_stream_write_string (stream,
+				"<style>body{ margin: 0; }</style>",
+				cancellable, NULL);
+		}
+
+		filter_flags = e_mail_formatter_get_text_format_flags (formatter);
+
+		dw = camel_medium_get_content (CAMEL_MEDIUM (part->part));
+		if (!dw)
+			return FALSE;
+
+		/* Check for RFC 2646 flowed text. */
+		if (camel_content_type_is(dw->mime_type, "text", "plain")
+		&& (format = camel_content_type_param(dw->mime_type, "format"))
+		&& !g_ascii_strcasecmp(format, "flowed"))
+			filter_flags |= CAMEL_MIME_FILTER_TOHTML_FORMAT_FLOWED;
+
+		rgb = e_color_to_value ((GdkColor *)
+			e_mail_formatter_get_color (
+				formatter, E_MAIL_FORMATTER_COLOR_CITATION));
+
+		filtered_stream = camel_stream_filter_new (stream);
+		html_filter = camel_mime_filter_tohtml_new (filter_flags, rgb);
+		camel_stream_filter_add (
+			CAMEL_STREAM_FILTER (filtered_stream), html_filter);
+		g_object_unref (html_filter);
+
+		content = g_strdup_printf (
+			"<div class=\"part-container\" style=\""
+			"border-color: #%06x;"
+			"background-color: #%06x; color: #%06x;\">"
+			"<div class=\"part-container-inner-margin pre\">\n",
+			e_color_to_value ((GdkColor *)
+				e_mail_formatter_get_color (
+					formatter, E_MAIL_FORMATTER_COLOR_FRAME)),
+			e_color_to_value ((GdkColor *)
+				e_mail_formatter_get_color (
+					formatter, E_MAIL_FORMATTER_COLOR_CONTENT)),
+			e_color_to_value ((GdkColor *)
+				e_mail_formatter_get_color (
+					formatter, E_MAIL_FORMATTER_COLOR_TEXT)));
+
+		camel_stream_write_string (stream, content, cancellable, NULL);
+		e_mail_formatter_format_text (formatter, part, filtered_stream, cancellable);
+		camel_stream_flush (filtered_stream, cancellable, NULL);
+
+		g_object_unref (filtered_stream);
+		g_free (content);
+
+		camel_stream_write_string (stream, "</div></div>\n", cancellable, NULL);
+
+		if (context->mode == E_MAIL_FORMATTER_MODE_RAW) {
+			camel_stream_write_string (stream, "</body></html>",
+						   cancellable, NULL);
+		}
+
+		return TRUE;
+
+	} else {
+		gchar *uri, *str;
+
+		uri = e_mail_part_build_uri (
+			context->folder, context->message_uid,
+			"part_id", G_TYPE_STRING, part->id,
+			"mode", G_TYPE_INT, E_MAIL_FORMATTER_MODE_RAW,
+			NULL);
+
+		str = g_strdup_printf (
+			"<iframe width=\"100%%\" height=\"10\""
+			" id=\"%s.iframe\" "
+			" frameborder=\"0\" src=\"%s\"></iframe>",
+			part->id, uri);
+
+		camel_stream_write_string (stream, str, cancellable, NULL);
+
+		g_free (str);
+		g_free (uri);
+	}
+
+	return TRUE;
+}
+
+static const gchar *
+emfe_text_plain_get_display_name (EMailFormatterExtension *extension)
+{
+	return _("Plain Text");
+}
+
+static const gchar *
+emfe_text_plain_get_description (EMailFormatterExtension *extension)
+{
+	return _("Format part as plain text");
+}
+
+static const gchar **
+emfe_text_plain_mime_types (EMailExtension *extension)
+{
+	return formatter_mime_types;
+}
+
+static void
+e_mail_formatter_text_plain_class_init (EMailFormatterTextPlainClass *klass)
+{
+	e_mail_formatter_text_plain_parent_class = g_type_class_peek_parent (klass);
+}
+
+static void
+e_mail_formatter_formatter_extension_interface_init (EMailFormatterExtensionInterface *iface)
+{
+	iface->format = emfe_text_plain_format;
+	iface->get_display_name = emfe_text_plain_get_display_name;
+	iface->get_description = emfe_text_plain_get_description;
+}
+
+static void
+e_mail_formatter_mail_extension_interface_init (EMailExtensionInterface *iface)
+{
+	iface->mime_types = emfe_text_plain_mime_types;
+}
+
+static void
+e_mail_formatter_text_plain_init (EMailFormatterTextPlain *formatter)
+{
+
+}