gnu/packages/patches/ghostscript-no-header-uuid.patch

   1 This patch makes the UUIDs in the XMP header optional, depending on the
   2 setting of the environment variable GS_GENERATE_UUIDS.
   3
   4 If the environment variable GS_GENERATE_UUIDS is set to "0" or "no", it will
   5 not write out the Document UUID field and also will write the Instance ID
   6 field value as "".
   7
   8 Upstream does not want to do this.
   9
  10 See: https://bugs.ghostscript.com/show_bug.cgi?id=698208
  11 diff -ur orig/gnu-ghostscript-9.14.0/devices/vector/gdevpdfe.c aa/gnu-ghostscript-9.14.0/devices/vector/gdevpdfe.c
  12 --- orig/gnu-ghostscript-9.14.0/devices/vector/gdevpdfe.c       2017-07-09 23:30:28.960479189 +0200
  13 +++ gnu-ghostscript-9.14.0/devices/vector/gdevpdfe.c    2017-07-10 01:04:12.252478276 +0200
  14 @@ -620,7 +620,7 @@
  15          return code;
  16
  17      /* PDF/A XMP reference recommends setting UUID to empty. If not empty must be a URI */
  18 -    if (pdev->PDFA != 0)
  19 +    if (pdev->PDFA != 0 || (getenv("GS_GENERATE_UUIDS") && (strcasecmp(getenv("GS_GENERATE_UUIDS"), "0") == 0 || strcasecmp(getenv("GS_GENERATE_UUIDS"), "no") == 0)))
  20          instance_uuid[0] = 0x00;
  21
  22      cre_date_time_len = pdf_get_docinfo_item(pdev, "/CreationDate", cre_date_time, sizeof(cre_date_time));
  23 @@ -720,14 +720,17 @@
  24              pdf_xml_tag_close(s, "rdf:Description");
  25              pdf_xml_newline(s);
  26
  27 -            pdf_xml_tag_open_beg(s, "rdf:Description");
  28 -            pdf_xml_copy(s, " rdf:about=\"\"");
  29 -            pdf_xml_attribute_name(s, "xmlns:xapMM");
  30 -            pdf_xml_attribute_value(s, "http://ns.adobe.com/xap/1.0/mm/");
  31 -            pdf_xml_attribute_name(s, "xapMM:DocumentID");
  32 -            pdf_xml_attribute_value(s, document_uuid);
  33 -            pdf_xml_tag_end_empty(s);
  34 -            pdf_xml_newline(s);
  35 +            if (!getenv("GS_GENERATE_UUIDS") || (strcasecmp(getenv("GS_GENERATE_UUIDS"), "0") != 0 && strcasecmp(getenv("GS_GENERATE_UUIDS"), "no") != 0))
  36 +            {
  37 +                pdf_xml_tag_open_beg(s, "rdf:Description");
  38 +                pdf_xml_copy(s, " rdf:about=\"\"");
  39 +                pdf_xml_attribute_name(s, "xmlns:xapMM");
  40 +                pdf_xml_attribute_value(s, "http://ns.adobe.com/xap/1.0/mm/");
  41 +                pdf_xml_attribute_name(s, "xapMM:DocumentID");
  42 +                pdf_xml_attribute_value(s, document_uuid);
  43 +                pdf_xml_tag_end_empty(s);
  44 +                pdf_xml_newline(s);
  45 +            }
  46
  47              pdf_xml_tag_open_beg(s, "rdf:Description");
  48              pdf_xml_copy(s, " rdf:about=\"\"");