/*
* e-mail-parser-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.
*
* 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 General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <ctype.h>
#include <glib/gi18n-lib.h>
#include <e-util/e-util.h>
#include "e-mail-inline-filter.h"
#include "e-mail-parser-extension.h"
#include "e-mail-part-utils.h"
typedef EMailParserExtension EMailParserTextPlain;
typedef EMailParserExtensionClass EMailParserTextPlainClass;
GType e_mail_parser_text_plain_get_type (void);
G_DEFINE_TYPE (
EMailParserTextPlain,
e_mail_parser_text_plain,
E_TYPE_MAIL_PARSER_EXTENSION)
static const gchar *parser_mime_types[] = {
"text/plain",
"text/*",
NULL
};
static gboolean
part_is_empty (CamelMimePart *part)
{
CamelDataWrapper *dw;
GByteArray *ba;
guint i;
dw = camel_medium_get_content (CAMEL_MEDIUM (part));
ba = camel_data_wrapper_get_byte_array (dw);
if (!ba)
return TRUE;
for (i = 0; i < ba->len; i++) {
/* Checks for \n, \t, \f, \r, \v and space */
if (!isspace (ba->data[i]))
return FALSE;
}
return TRUE;
}
static gboolean
process_part (EMailParser *parser,
GString *part_id,
gint part_number,
CamelMimePart *part,
gboolean is_attachment,
GCancellable *cancellable,
GQueue *out_mail_parts)
{
CamelContentType *type;
EMailPart *mail_part;
gint s_len = part_id->len;
if (part_is_empty (part))
return TRUE;
type = camel_mime_part_get_content_type (part);
if (!camel_content_type_is (type, "text", "*")) {
e_mail_parser_parse_part (
parser, CAMEL_MIME_PART (part), part_id,
cancellable, out_mail_parts);
} else if (!camel_content_type_is (type, "text", "calendar")) {
GQueue work_queue = G_QUEUE_INIT;
gchar *mime_type;
g_string_append_printf (part_id, ".plain_text.%d", part_number);
mail_part = e_mail_part_new (part, part_id->str);
mime_type = camel_content_type_simple (type);
e_mail_part_set_mime_type (mail_part, mime_type);
g_free (mime_type);
g_string_truncate (part_id, s_len);
g_queue_push_tail (&work_queue, mail_part);
if (is_attachment)
e_mail_parser_wrap_as_attachment (
parser, part, part_id, &work_queue);
e_queue_transfer (&work_queue, out_mail_parts);
} else {
g_string_append_printf (part_id, ".inline.%d", part_number);
e_mail_parser_parse_part (
parser, CAMEL_MIME_PART (part), part_id,
cancellable, out_mail_parts);
g_string_truncate (part_id, s_len);
}
return TRUE;
}
static gboolean
empe_text_plain_parse (EMailParserExtension *extension,
EMailParser *parser,
CamelMimePart *part,
GString *part_id,
GCancellable *cancellable,
GQueue *out_mail_parts)
{
CamelStream *filtered_stream, *null;
CamelMultipart *mp;
CamelDataWrapper *dw;
CamelContentType *type;
gint ii, count;
EMailInlineFilter *inline_filter;
gboolean charset_added = FALSE;
const gchar *snoop_type = NULL;
gboolean is_attachment;
gboolean handled = FALSE;
dw = camel_medium_get_content ((CamelMedium *) part);
if (!dw)
return FALSE;
/* This scans the text part for inline-encoded data, creates
* a multipart of all the parts inside it. */
/* FIXME: We should discard this multipart if it only contains
* the original text, but it makes this hash lookup more complex */
if (!dw->mime_type)
snoop_type = e_mail_part_snoop_type (part);
/* if we had to snoop the part type to get here, then
* use that as the base type, yuck */
if (snoop_type == NULL
|| (type = camel_content_type_decode (snoop_type)) == NULL) {
type = dw->mime_type;
camel_content_type_ref (type);
}
if (dw->mime_type && type != dw->mime_type && camel_content_type_param (dw->mime_type, "charset")) {
camel_content_type_set_param (type, "charset", camel_content_type_param (dw->mime_type, "charset"));
charset_added = TRUE;
}
null = camel_stream_null_new ();
filtered_stream = camel_stream_filter_new (null);
g_object_unref (null);
inline_filter = e_mail_inline_filter_new (
camel_mime_part_get_encoding (part),
type,
camel_mime_part_get_filename (part));
camel_stream_filter_add (
CAMEL_STREAM_FILTER (filtered_stream),
CAMEL_MIME_FILTER (inline_filter));
camel_data_wrapper_decode_to_stream_sync (
dw, (CamelStream *) filtered_stream, cancellable, NULL);
camel_stream_close ((CamelStream *) filtered_stream, cancellable, NULL);
g_object_unref (filtered_stream);
if (!e_mail_inline_filter_found_any (inline_filter)) {
g_object_unref (inline_filter);
camel_content_type_unref (type);
return process_part (
parser, part_id, 0,
part, e_mail_part_is_attachment (part),
cancellable, out_mail_parts);
}
mp = e_mail_inline_filter_get_multipart (inline_filter);
if (charset_added) {
camel_content_type_set_param (type, "charset", NULL);
}
g_object_unref (inline_filter);
camel_content_type_unref (type);
/* We handle our made-up multipart here,
* so we don't recursively call ourselves. */
count = camel_multipart_get_number (mp);
is_attachment = ((count == 1) && (e_mail_part_is_attachment (part)));
for (ii = 0; ii < count; ii++) {
CamelMimePart *newpart = camel_multipart_get_part (mp, ii);
if (newpart != NULL) {
handled |= process_part (
parser, part_id, ii,
newpart, is_attachment,
cancellable, out_mail_parts);
}
}
g_object_unref (mp);
return handled;
}
static void
e_mail_parser_text_plain_class_init (EMailParserExtensionClass *class)
{
class->mime_types = parser_mime_types;
class->priority = G_PRIORITY_LOW;
class->parse = empe_text_plain_parse;
}
static void
e_mail_parser_text_plain_init (EMailParserExtension *extension)
{
}
