[evince/wip/chpe/xmp: 8/9] pdf: Only flag EvDocumentInfo fields when actually present

[Christian Persch <chpe src gnome org>]

commit b684d0f124b1eeb671363d8e18e74cb13ce3f920
Author: Christian Persch <chpe src gnome org>
Date:   Sat Dec 4 01:06:21 2021 +0100

    pdf: Only flag EvDocumentInfo fields when actually present

 backend/pdf/ev-poppler.c | 29 ++++++++++++++++++-----------
 1 file changed, 18 insertions(+), 11 deletions(-)
---
diff --git a/backend/pdf/ev-poppler.c b/backend/pdf/ev-poppler.c
index 8c2b363f4..b13517c29 100644
--- a/backend/pdf/ev-poppler.c
+++ b/backend/pdf/ev-poppler.c
@@ -562,23 +562,14 @@ pdf_document_get_info (EvDocument *document)
 
        info = ev_document_info_new ();
 
-       info->fields_mask |= EV_DOCUMENT_INFO_TITLE |
-                            EV_DOCUMENT_INFO_FORMAT |
-                            EV_DOCUMENT_INFO_AUTHOR |
-                            EV_DOCUMENT_INFO_SUBJECT |
-                            EV_DOCUMENT_INFO_KEYWORDS |
-                            EV_DOCUMENT_INFO_LAYOUT |
+       info->fields_mask |= EV_DOCUMENT_INFO_LAYOUT |
                             EV_DOCUMENT_INFO_START_MODE |
                             EV_DOCUMENT_INFO_PERMISSIONS |
                             EV_DOCUMENT_INFO_UI_HINTS |
-                            EV_DOCUMENT_INFO_CREATOR |
-                            EV_DOCUMENT_INFO_PRODUCER |
                             EV_DOCUMENT_INFO_LINEARIZED |
                             EV_DOCUMENT_INFO_N_PAGES |
                             EV_DOCUMENT_INFO_SECURITY |
-                            EV_DOCUMENT_INFO_PAPER_SIZE |
-                            EV_DOCUMENT_INFO_CONTAINS_JS |
-                            EV_DOCUMENT_INFO_LICENSE;
+                            EV_DOCUMENT_INFO_PAPER_SIZE;
 
        g_object_get (PDF_DOCUMENT (document)->document,
                      "title", &(info->title),
@@ -598,6 +589,21 @@ pdf_document_get_info (EvDocument *document)
                      "metadata", &metadata,
                      NULL);
 
+        if (info->title)
+                info->fields_mask |= EV_DOCUMENT_INFO_TITLE;
+        if (info->format)
+                info->fields_mask |= EV_DOCUMENT_INFO_FORMAT;
+        if (info->author)
+                info->fields_mask |= EV_DOCUMENT_INFO_AUTHOR;
+        if (info->subject)
+                info->fields_mask |= EV_DOCUMENT_INFO_SUBJECT;
+        if (info->keywords)
+                info->fields_mask |= EV_DOCUMENT_INFO_KEYWORDS;
+        if (info->creator)
+                info->fields_mask |= EV_DOCUMENT_INFO_CREATOR;
+        if (info->producer)
+                info->fields_mask |= EV_DOCUMENT_INFO_PRODUCER;
+
         ev_document_info_take_created_datetime (info, created_datetime);
         ev_document_info_take_modified_datetime (info, modified_datetime);
 
@@ -711,6 +717,7 @@ pdf_document_get_info (EvDocument *document)
 #if POPPLER_CHECK_VERSION(0, 90, 0)
        info->contains_js = poppler_document_has_javascript (PDF_DOCUMENT (document)->document) ?
                            EV_DOCUMENT_CONTAINS_JS_YES : EV_DOCUMENT_CONTAINS_JS_NO;
+        info->fields_mask |= EV_DOCUMENT_INFO_CONTAINS_JS;
 #else
        info->contains_js = EV_DOCUMENT_CONTAINS_JS_UNKNOWN;
 #endif