Mail formatter rewrite - convert some plugins to modules

audio-inline, itip-formatter, prefer-plain, tnef-attachments
and vcard-inline plugins were converted to modules so that they
can fit into concept of the new formatter.

Every module still installs .eplug file, because there is no
suitable API at the moment to register plugins to the plugins dialog
and to extend the Preferences dialog.

1 files changed, 314 insertions, 0 deletions

diff --git a/modules/text-highlight/text-highlight.c b/modules/text-highlight/text-highlight.c
new file mode 100644
index 0000000000..462e5f0dc3
--- /dev/null
+++ b/modules/text-highlight/text-highlight.c
@@ -0,0 +1,314 @@
+/*
+ * text-highlight.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 "text-highlight.h"
+
+#include <em-format/e-mail-formatter-extension.h>
+#include <em-format/e-mail-formatter.h>
+#include <em-format/e-mail-part-utils.h>
+#include <e-util/e-util.h>
+
+#include <libebackend/libebackend.h>
+#include <libedataserver/libedataserver.h>
+
+#include <glib/gi18n-lib.h>
+#include <X11/Xlib.h>
+#include <camel/camel.h>
+
+typedef struct _EMailFormatterTextHighlight EMailFormatterTextHighlight;
+typedef struct _EMailFormatterTextHighlightClass EMailFormatterTextHighlightClass;
+
+struct _EMailFormatterTextHighlight {
+	EExtension parent;
+};
+
+struct _EMailFormatterTextHighlightClass {
+	EExtensionClass parent_class;
+};
+
+GType e_mail_formatter_text_highlight_get_type (void);
+static void e_mail_formatter_formatter_extension_interface_init (EMailFormatterExtensionInterface *iface);
+static void e_mail_formatter_mail_extension_interface_init (EMailExtensionInterface *iface);
+
+G_DEFINE_DYNAMIC_TYPE_EXTENDED (
+	EMailFormatterTextHighlight,
+	e_mail_formatter_text_highlight,
+	E_TYPE_EXTENSION,
+	0,
+	G_IMPLEMENT_INTERFACE_DYNAMIC (
+		E_TYPE_MAIL_EXTENSION,
+		e_mail_formatter_mail_extension_interface_init)
+	G_IMPLEMENT_INTERFACE_DYNAMIC (
+		E_TYPE_MAIL_FORMATTER_EXTENSION,
+		e_mail_formatter_formatter_extension_interface_init));
+
+static gpointer emfe_parent_class = 0;
+
+static const gchar *formatter_mime_types[] = { "text/x-diff",
+					       "text/x-patch",
+					       NULL };
+
+static gchar * get_default_font (void)
+{
+	gchar *font;
+	GSettings *settings;
+
+	settings = g_settings_new ("org.gnome.desktop.interface");
+
+	font = g_settings_get_string (settings, "monospace-font-name");
+
+	return font ? font : g_strdup ("monospace 10");
+}
+
+static gboolean
+emfe_text_highlight_format (EMailFormatterExtension *extension,
+                            EMailFormatter *formatter,
+                            EMailFormatterContext *context,
+                            EMailPart *part,
+                            CamelStream *stream,
+                            GCancellable *cancellable)
+{
+	if (context->mode == E_MAIL_FORMATTER_MODE_PRINTING) {
+
+		CamelDataWrapper *dw;
+		CamelStream *filter_stream;
+		CamelMimeFilter *mime_filter;
+
+		dw = camel_medium_get_content (CAMEL_MEDIUM (part->part));
+		if (!dw) {
+			return FALSE;
+		}
+
+		camel_stream_write_string (
+			stream, "<pre><div class=\"pre\">", cancellable, NULL);
+
+		filter_stream = camel_stream_filter_new (stream);
+		mime_filter = camel_mime_filter_tohtml_new (
+				CAMEL_MIME_FILTER_TOHTML_PRE |
+				CAMEL_MIME_FILTER_TOHTML_CONVERT_SPACES,
+				0x7a7a7a);
+		camel_stream_filter_add (
+			CAMEL_STREAM_FILTER (filter_stream), mime_filter);
+		g_object_unref (mime_filter);
+
+		e_mail_formatter_format_text (
+			formatter, part, filter_stream, cancellable);
+
+		camel_stream_flush (filter_stream, cancellable, NULL);
+		g_object_unref (filter_stream);
+
+		camel_stream_write_string (
+			stream, "</div></pre>", cancellable, NULL);
+
+		return TRUE;
+
+	} else if (context->mode == E_MAIL_FORMATTER_MODE_RAW) {
+		gint stdin, stdout;
+		GPid pid;
+		CamelStream *read, *write;
+		CamelDataWrapper *dw;
+		gchar *font_family, *font_size;
+		gboolean use_custom_font;
+		GSettings *settings;
+		PangoFontDescription *fd;
+		const gchar *argv[] = { "highlight",
+					NULL,	/* don't move these! */
+					NULL,
+					"--out-format=html",
+					"--include-style",
+					"--inline-css",
+					"--style=bclear",
+					"--syntax=diff",
+					"--failsafe",
+					NULL };
+
+		dw = camel_medium_get_content (CAMEL_MEDIUM (part->part));
+		if (!dw) {
+			return FALSE;
+		}
+
+		fd = NULL;
+		settings = g_settings_new ("org.gnome.evolution.mail");
+		use_custom_font = g_settings_get_boolean (settings, "use-custom-font");
+		if (!use_custom_font) {
+			gchar *font;
+
+			font = get_default_font ();
+			fd = pango_font_description_from_string (font);
+			g_free (font);
+
+			g_object_unref (settings);
+
+		} else {
+			gchar *font;
+
+			font = g_settings_get_string (settings, "monospace-font");
+			if (!font)
+				font = get_default_font ();
+
+			fd = pango_font_description_from_string (font);
+
+			g_free (font);
+		}
+
+		font_family = g_strdup_printf ("--font='%s'",
+				pango_font_description_get_family (fd));
+		font_size = g_strdup_printf ("--font-size=%d",
+				pango_font_description_get_size (fd) / PANGO_SCALE);
+
+		argv[1] = font_family;
+		argv[2] = font_size;
+
+		if (!g_spawn_async_with_pipes (
+			NULL, (gchar **) argv, NULL,
+			G_SPAWN_SEARCH_PATH |
+			G_SPAWN_DO_NOT_REAP_CHILD,
+			NULL, NULL, &pid, &stdin, &stdout, NULL, NULL)) {
+			return FALSE;
+		}
+
+		write = camel_stream_fs_new_with_fd (stdin);
+		read = camel_stream_fs_new_with_fd (stdout);
+
+		camel_data_wrapper_decode_to_stream_sync (
+			dw, write, cancellable, NULL);
+		g_object_unref (write);
+
+		g_spawn_close_pid (pid);
+
+		g_seekable_seek (G_SEEKABLE (read), 0, G_SEEK_SET, cancellable, NULL);
+		camel_stream_write_to_stream (read, stream, cancellable, NULL);
+		camel_stream_flush (read, cancellable, NULL);
+		g_object_unref (read);
+
+		g_free (font_family);
+		g_free (font_size);
+		pango_font_description_free (fd);
+
+	} 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 (
+			"<div class=\"part-container\" style=\"border-color: #%06x; "
+			"background-color: #%06x;\">"
+			"<div class=\"part-container-inner-margin\">\n"
+			"<iframe width=\"100%%\" height=\"10\""
+			" name=\"%s\" frameborder=\"0\" src=\"%s\"></iframe>"
+			"</div></div>",
+			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)),
+			part->id, uri);
+
+		camel_stream_write_string (stream, str, cancellable, NULL);
+
+		g_free (str);
+		g_free (uri);
+
+	}
+
+	return TRUE;
+}
+
+static const gchar *
+emfe_text_highlight_get_display_name (EMailFormatterExtension *extension)
+{
+	return _("Patch");
+}
+
+static const gchar *
+emfe_text_highlight_get_description (EMailFormatterExtension *extension)
+{
+	return _("Format part as a patch");
+}
+
+static const gchar **
+emfe_text_highlight_mime_types (EMailExtension *extension)
+{
+	return formatter_mime_types;
+}
+
+static void
+emfe_text_highlight_constructed (GObject *object)
+{
+	EExtensible *extensible;
+	EMailExtensionRegistry *reg;
+
+	extensible = e_extension_get_extensible (E_EXTENSION (object));
+	reg = E_MAIL_EXTENSION_REGISTRY (extensible);
+
+	e_mail_extension_registry_add_extension (reg, E_MAIL_EXTENSION (object));
+}
+
+static void
+e_mail_formatter_text_highlight_init (EMailFormatterTextHighlight *object)
+{
+}
+
+static void
+e_mail_formatter_text_highlight_class_init (EMailFormatterTextHighlightClass *klass)
+{
+	GObjectClass *object_class;
+	EExtensionClass *extension_class;
+
+	emfe_parent_class = g_type_class_peek_parent (klass);
+
+	object_class = G_OBJECT_CLASS (klass);
+	object_class->constructed = emfe_text_highlight_constructed;
+
+	extension_class = E_EXTENSION_CLASS (klass);
+	extension_class->extensible_type = E_TYPE_MAIL_FORMATTER_EXTENSION_REGISTRY;
+}
+
+static void
+e_mail_formatter_text_highlight_class_finalize (EMailFormatterTextHighlightClass *klass)
+{
+}
+
+void
+e_mail_formatter_text_highlight_type_register (GTypeModule *type_module)
+{
+	e_mail_formatter_text_highlight_register_type (type_module);
+}
+
+static void
+e_mail_formatter_formatter_extension_interface_init (EMailFormatterExtensionInterface *iface)
+{
+	iface->format = emfe_text_highlight_format;
+	iface->get_display_name = emfe_text_highlight_get_display_name;
+	iface->get_description = emfe_text_highlight_get_description;
+}
+
+static void
+e_mail_formatter_mail_extension_interface_init (EMailExtensionInterface *iface)
+{
+	iface->mime_types = emfe_text_highlight_mime_types;
+}