[evolution] Bug #699997 - Show unreferenced images in multipart/related parser

[Milan Crha <mcrha src gnome org>]

commit 6a65912679f4287dd7d45e11f5c5a7c893c43112
Author: Milan Crha <mcrha redhat com>
Date:   Mon Sep 30 14:06:59 2013 +0200

    Bug #699997 - Show unreferenced images in multipart/related parser

 em-format/e-mail-parser-multipart-related.c |   30 +++++++++++++++++++++++++-
 1 files changed, 28 insertions(+), 2 deletions(-)
---
diff --git a/em-format/e-mail-parser-multipart-related.c b/em-format/e-mail-parser-multipart-related.c
index 45a5d44..d73e665 100644
--- a/em-format/e-mail-parser-multipart-related.c
+++ b/em-format/e-mail-parser-multipart-related.c
@@ -26,6 +26,7 @@
 
 #include "e-mail-parser-extension.h"
 #include "e-mail-part-utils.h"
+#include "e-mail-part-image.h"
 
 typedef EMailParserExtension EMailParserMultipartRelated;
 typedef EMailParserExtensionClass EMailParserMultipartRelatedClass;
@@ -51,7 +52,7 @@ empe_mp_related_parse (EMailParserExtension *extension,
                        GQueue *out_mail_parts)
 {
        CamelMultipart *mp;
-       CamelMimePart *body_part, *display_part = NULL;
+       CamelMimePart *body_part, *display_part = NULL, *may_display_part;
        CamelContentType *display_content_type;
        gchar *html_body = NULL;
        gint i, nparts, partidlen, displayid = 0;
@@ -71,12 +72,30 @@ empe_mp_related_parse (EMailParserExtension *extension,
                        parser, part, part_id, "multipart/mixed",
                        cancellable, out_mail_parts);
 
+       may_display_part = display_part;
+
        display_content_type = camel_mime_part_get_content_type (display_part);
+       if (display_content_type && camel_content_type_is (display_content_type, "multipart", "alternative")) 
{
+               CamelMultipart *subparts = CAMEL_MULTIPART (camel_medium_get_content ((CamelMedium *) 
display_part));
+               if (subparts) {
+                       nparts = camel_multipart_get_number (subparts);
+                       for (i = 0; i < nparts; i++) {
+                               body_part = camel_multipart_get_part (subparts, i);
+                               display_content_type = camel_mime_part_get_content_type (body_part);
+                               if (display_content_type && camel_content_type_is (display_content_type, 
"text", "html")) {
+                                       may_display_part = body_part;
+                                       break;
+                               }
+                       }
+               }
+       }
+
+       display_content_type = camel_mime_part_get_content_type (may_display_part);
        if (display_content_type &&
            camel_content_type_is (display_content_type, "text", "html")) {
                CamelDataWrapper *dw;
 
-               dw = camel_medium_get_content ((CamelMedium *) display_part);
+               dw = camel_medium_get_content ((CamelMedium *) may_display_part);
                if (dw) {
                        CamelStream *mem = camel_stream_mem_new ();
                        GByteArray *bytes;
@@ -131,6 +150,13 @@ empe_mp_related_parse (EMailParserExtension *extension,
                        /* Don't render the part on its own! */
                        if (e_mail_part_utils_body_refers (html_body, cid))
                                mail_part->is_hidden = TRUE;
+                       else if (cid && E_IS_MAIL_PART_IMAGE (mail_part) &&
+                                e_mail_part_get_is_attachment (mail_part) &&
+                                mail_part->is_hidden) {
+                               mail_part->is_hidden = FALSE;
+
+                               e_mail_parser_wrap_as_attachment (parser, body_part, part_id, &work_queue);
+                       }
                }
 
                e_queue_transfer (&work_queue, out_mail_parts);