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, 258 insertions, 0 deletions

diff --git a/em-format/e-mail-formatter-print-headers.c b/em-format/e-mail-formatter-print-headers.c
new file mode 100644
index 0000000000..86fc85b063
--- /dev/null
+++ b/em-format/e-mail-formatter-print-headers.c
@@ -0,0 +1,258 @@
+/*
+ * e-mail-formatter-print-headers.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 <em-format/e-mail-formatter-extension.h>
+#include <em-format/e-mail-formatter.h>
+#include <em-format/e-mail-formatter-utils.h>
+#include <em-format/e-mail-inline-filter.h>
+#include <libemail-engine/e-mail-utils.h>
+#include <e-util/e-util.h>
+
+#include <camel/camel.h>
+
+#include <string.h>
+
+typedef struct _EMailFormatterPrintHeaders {
+	GObject parent;
+} EMailFormatterPrintHeaders;
+
+typedef struct _EMailFormatterPrintHeadersClass {
+	GObjectClass parent_class;
+} EMailFormatterPrintHeadersClass;
+
+static const gchar *formatter_mime_types[] = { "application/vnd.evolution.headers", NULL };
+
+static void e_mail_formatter_print_formatter_extension_interface_init
+					(EMailFormatterExtensionInterface *iface);
+static void e_mail_formatter_print_mail_extension_interface_init
+					(EMailExtensionInterface *iface);
+
+G_DEFINE_TYPE_EXTENDED (
+	EMailFormatterPrintHeaders,
+	e_mail_formatter_print_headers,
+	G_TYPE_OBJECT,
+	0,
+	G_IMPLEMENT_INTERFACE (
+		E_TYPE_MAIL_EXTENSION,
+		e_mail_formatter_print_mail_extension_interface_init)
+	G_IMPLEMENT_INTERFACE (
+		E_TYPE_MAIL_FORMATTER_EXTENSION,
+		e_mail_formatter_print_formatter_extension_interface_init))
+
+static gboolean
+emfpe_headers_format (EMailFormatterExtension *extension,
+                      EMailFormatter *formatter,
+                      EMailFormatterContext *context,
+                      EMailPart *part,
+                      CamelStream *stream,
+                      GCancellable *cancellable)
+{
+	struct _camel_header_raw raw_header;
+	GString *str, *tmp;
+	gchar *subject;
+	const gchar *buf;
+	GSList *parts_iter;
+	GList *iter;
+	gint attachments_count;
+	gchar *part_id_prefix;
+	const GQueue *headers;
+
+	buf = camel_medium_get_header (CAMEL_MEDIUM (part->part), "subject");
+	subject = camel_header_decode_string (buf, "UTF-8");
+	str = g_string_new ("");
+	g_string_append_printf (str, "<h1>%s</h1>\n", subject);
+	g_free (subject);
+
+	g_string_append (
+		str,
+		"<table border=\"0\" cellspacing=\"5\" "
+		"cellpadding=\"0\" class=\"printing-header\">\n");
+
+	headers = e_mail_formatter_get_headers (formatter);
+	for (iter = headers->head; iter; iter = iter->next) {
+
+		EMailFormatterHeader *header = iter->data;
+		raw_header.name = header->name;
+
+		/* Skip 'Subject' header, it's already displayed. */
+		if (g_ascii_strncasecmp (header->name, "Subject", 7) == 0)
+			continue;
+
+		if (header->value && *header->value) {
+			raw_header.value = header->value;
+			e_mail_formatter_format_header (formatter, str,
+				CAMEL_MEDIUM (part->part), &raw_header,
+				header->flags | E_MAIL_FORMATTER_HEADER_FLAG_NOLINKS,
+				"UTF-8");
+		} else {
+			raw_header.value = g_strdup (camel_medium_get_header (
+				CAMEL_MEDIUM (context->message), header->name));
+
+			if (raw_header.value && *raw_header.value) {
+				e_mail_formatter_format_header (formatter, str,
+					CAMEL_MEDIUM (part->part), &raw_header,
+					header->flags | E_MAIL_FORMATTER_HEADER_FLAG_NOLINKS,
+					"UTF-8");
+			}
+
+			if (raw_header.value)
+				g_free (raw_header.value);
+		}
+	}
+
+        /* Get prefix of this PURI */
+	part_id_prefix = g_strndup (part->id, g_strrstr (part->id, ".") - part->id);
+
+	/* Add encryption/signature header */
+	raw_header.name = _("Security");
+	tmp = g_string_new ("");
+	/* Find first secured part. */
+	for (parts_iter = context->parts; parts_iter; parts_iter = parts_iter->next) {
+
+		EMailPart *mail_part = parts_iter->data;
+		if (mail_part == NULL)
+			continue;
+
+		if (mail_part->validity_type == 0)
+			continue;
+
+		if (!g_str_has_prefix (mail_part->id, part_id_prefix))
+			continue;
+
+		if ((mail_part->validity_type & E_MAIL_PART_VALIDITY_PGP) &&
+		    (mail_part->validity_type & E_MAIL_PART_VALIDITY_SIGNED)) {
+			g_string_append (tmp, _("GPG signed"));
+		}
+		if ((mail_part->validity_type & E_MAIL_PART_VALIDITY_PGP) &&
+		    (mail_part->validity_type & E_MAIL_PART_VALIDITY_ENCRYPTED)) {
+			if (tmp->len > 0) g_string_append (tmp, ", ");
+			g_string_append (tmp, _("GPG encrpyted"));
+		}
+		if ((mail_part->validity_type & E_MAIL_PART_VALIDITY_SMIME) &&
+		    (mail_part->validity_type & E_MAIL_PART_VALIDITY_SIGNED)) {
+
+			if (tmp->len > 0) g_string_append (tmp, ", ");
+			g_string_append (tmp, _("S/MIME signed"));
+		}
+		if ((mail_part->validity_type & E_MAIL_PART_VALIDITY_SMIME) &&
+		    (mail_part->validity_type & E_MAIL_PART_VALIDITY_ENCRYPTED)) {
+
+			if (tmp->len > 0) g_string_append (tmp, ", ");
+			g_string_append (tmp, _("S/MIME encrpyted"));
+		}
+
+		break;
+	}
+
+	if (tmp->len > 0) {
+		raw_header.value = tmp->str;
+		e_mail_formatter_format_header (
+			formatter, str, CAMEL_MEDIUM (part->part), &raw_header,
+			E_MAIL_FORMATTER_HEADER_FLAG_BOLD |
+			E_MAIL_FORMATTER_HEADER_FLAG_NOLINKS, "UTF-8");
+	}
+	g_string_free (tmp, TRUE);
+
+	/* Count attachments and display the number as a header */
+	attachments_count = 0;
+
+	for (parts_iter = context->parts; parts_iter; parts_iter = parts_iter->next) {
+
+		EMailPart *mail_part = parts_iter->data;
+		if (!mail_part)
+			continue;
+
+		if (!g_str_has_prefix (mail_part->id, part_id_prefix))
+			continue;
+
+		if (mail_part->is_attachment && !mail_part->cid &&
+		    !mail_part->is_hidden) {
+			attachments_count++;
+		}
+	}
+
+	if (attachments_count > 0) {
+		raw_header.name = _("Attachments");
+		raw_header.value = g_strdup_printf ("%d", attachments_count);
+		e_mail_formatter_format_header (
+			formatter, str, CAMEL_MEDIUM (part->part), &raw_header,
+			E_MAIL_FORMATTER_HEADER_FLAG_BOLD |
+			E_MAIL_FORMATTER_HEADER_FLAG_NOLINKS, "UTF-8");
+		g_free (raw_header.value);
+	}
+
+	g_string_append (str, "</table>");
+
+	camel_stream_write_string (stream, str->str, cancellable, NULL);
+	g_string_free (str, TRUE);
+	g_free (part_id_prefix);
+
+	return TRUE;
+}
+
+static const gchar *
+emfpe_headers_get_display_name (EMailFormatterExtension *extension)
+{
+	return NULL;
+}
+
+static const gchar *
+emfpe_headers_get_description (EMailFormatterExtension *extension)
+{
+	return NULL;
+}
+
+static const gchar **
+emfpe_headers_mime_types (EMailExtension *extension)
+{
+	return formatter_mime_types;
+}
+
+static void
+e_mail_formatter_print_headers_class_init (EMailFormatterPrintHeadersClass *klass)
+{
+	e_mail_formatter_print_headers_parent_class = g_type_class_peek_parent (klass);
+}
+
+static void
+e_mail_formatter_print_formatter_extension_interface_init (EMailFormatterExtensionInterface *iface)
+{
+	iface->format = emfpe_headers_format;
+	iface->get_display_name = emfpe_headers_get_display_name;
+	iface->get_description = emfpe_headers_get_description;
+}
+
+static void
+e_mail_formatter_print_mail_extension_interface_init (EMailExtensionInterface *iface)
+{
+	iface->mime_types = emfpe_headers_mime_types;
+}
+
+static void
+e_mail_formatter_print_headers_init (EMailFormatterPrintHeaders *formatter)
+{
+
+}