Fix svg to base64 conversion

This reverts part of ab14a970 which had
a questionable fix by unconditionally removing the first 8 bytes of the svg
which led to svgs starting with

rsion="1.0" encoding="utf-8"?>

instead of

<?xml version="1.0" encoding="utf-8"?>

Change-Id: I8c4d78db1794473d20ddd77019ae81b88be0bb03
Reviewed-on: https://gerrit.libreoffice.org/54550Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Samuel Mehrbrodt <Samuel.Mehrbrodt@cib.de>

svx/source/xoutdev/_xoutbmp.cxx

@@ -393,25 +393,7 @@ bool XOutBitmap::GraphicToBase64(const Graphic& rGraphic, OUString& rOUString)
     css::uno::Sequence<sal_Int8> aOStmSeq( static_cast<sal_Int8 const *>(aOStm.GetData()),aOStm.Tell() );
     OUStringBuffer aStrBuffer;
     ::comphelper::Base64::encode(aStrBuffer,aOStmSeq);
-    OUString aEncodedBase64Image = aStrBuffer.makeStringAndClear();
-    if( aLink.GetType() == GfxLinkType::NativeSvg )
-    {
-      sal_Int32 ite(8);
-      sal_Int32 nBufferLength(aOStmSeq.getLength());
-      const sal_Int8* pBuffer = aOStmSeq.getConstArray();
-      css::uno::Sequence<sal_Int8> newTempSeq = aOStmSeq;        // creates new Sequence to remove front 8 bits of garbage and encodes in base64
-      sal_Int8 *pOutBuffer = newTempSeq.getArray();
-      while(ite < nBufferLength)
-      {
-        *pOutBuffer++ = pBuffer[ite];
-        ite++;
-      }
-      ::comphelper::Base64::encode(aStrBuffer, newTempSeq);
-      aEncodedBase64Image = aStrBuffer.makeStringAndClear();
-      sal_Int32 SVGFixLength = aEncodedBase64Image.getLength();
-      aEncodedBase64Image = aEncodedBase64Image.replaceAt(SVGFixLength - 12, SVGFixLength, "") + "PC9zdmc+Cg=="; // removes rear 12 bits of garbage and adds svg closing tag in base64
-    }
-    rOUString = aMimeType + ";base64," + aEncodedBase64Image;
+    rOUString = aMimeType + ";base64," + aStrBuffer.makeStringAndClear();
     return true;
 }
 

sw/qa/extras/htmlexport/htmlexport.cxx

@@ -280,7 +280,7 @@ DECLARE_HTMLEXPORT_TEST(testExportImageBulletList, "tdf66822.odt")
 
     // Encoded base64 SVG bullet should match and render on browser
     assertXPath(pDoc, "/html/body/ul", 1);
-    assertXPath(pDoc, "/html/body/ul", "style", "list-style-image: url(data:image/svg+xml;base64,cnNpb249IjEuMCIgZW5jb2Rpbmc9InV0Zi04Ij8+DQo8IS0tIEdlbmVyYXRvcjogQWRvYmUgSWxsdXN0cmF0b3IgMTIuMC4xLCBTVkcgRXhwb3J0IFBsdWctSW4gLiBTVkcgVmVyc2lvbjogNi4wMCBCdWlsZCA1MTQ0OCkgIC0tPg0KPCFET0NUWVBFIHN2ZyBQVUJMSUMgIi0vL1czQy8vRFREIFNWRyAxLjEvL0VOIiAiaHR0cDovL3d3dy53My5vcmcvR3JhcGhpY3MvU1ZHLzEuMS9EVEQvc3ZnMTEuZHRkIiBbDQoJPCFFTlRJVFkgbnNfc3ZnICJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyI+DQoJPCFFTlRJVFkgbnNfeGxpbmsgImh0dHA6Ly93d3cudzMub3JnLzE5OTkveGxpbmsiPg0KXT4NCjxzdmcgIHZlcnNpb249IjEuMSIgaWQ9IkxheWVyXzEiIHhtbG5zPSImbnNfc3ZnOyIgeG1sbnM6eGxpbms9IiZuc194bGluazsiIHdpZHRoPSIxNC4wMDgiIGhlaWdodD0iMTQuMDEiDQoJIHZpZXdCb3g9IjAgMCAxNC4wMDggMTQuMDEiIG92ZXJmbG93PSJ2aXNpYmxlIiBlbmFibGUtYmFja2dyb3VuZD0ibmV3IDAgMCAxNC4wMDggMTQuMDEiIHhtbDpzcGFjZT0icHJlc2VydmUiPg0KPGc+DQoJPHJhZGlhbEdyYWRpZW50IGlkPSJYTUxJRF80XyIgY3g9IjcuMDA0NCIgY3k9IjcuMDA0OSIgcj0iNy4wMDQ0IiBncmFkaWVudFVuaXRzPSJ1c2VyU3BhY2VPblVzZSI+DQoJCTxzdG9wICBvZmZzZXQ9IjAiIHN0eWxlPSJzdG9wLWNvbG9yOiMzNURCMzUiLz4NCgkJPHN0b3AgIG9mZnNldD0iMSIgc3R5bGU9InN0b3AtY29sb3I6IzAwQTAwMCIvPg0KCTwvcmFkaWFsR3JhZGllbnQ+DQoJPGNpcmNsZSBmaWxsPSJ1cmwoI1hNTElEXzRfKSIgY3g9IjcuMDA0IiBjeT0iNy4wMDUiIHI9IjcuMDA0Ii8+DQoJPGRlZnM+DQoJCTxmaWx0ZXIgaWQ9IkFkb2JlX09wYWNpdHlNYXNrRmlsdGVyIiBmaWx0ZXJVbml0cz0idXNlclNwYWNlT25Vc2UiIHg9IjMuNDgxIiB5PSIwLjY5MyIgd2lkdGg9IjYuOTg4IiBoZWlnaHQ9IjMuODkzIj4NCgkJCTxmZUNvbG9yTWF0cml4ICB0eXBlPSJtYXRyaXgiIHZhbHVlcz0iMSAwIDAgMCAwICAwIDEgMCAwIDAgIDAgMCAxIDAgMCAgMCAwIDAgMSAwIi8+DQoJCTwvZmlsdGVyPg0KCTwvZGVmcz4NCgk8bWFzayBtYXNrVW5pdHM9InVzZXJTcGFjZU9uVXNlIiB4PSIzLjQ4MSIgeT0iMC42OTMiIHdpZHRoPSI2Ljk4OCIgaGVpZ2h0PSIzLjg5MyIgaWQ9IlhNTElEXzVfIj4NCgkJPGcgZmlsdGVyPSJ1cmwoI0Fkb2JlX09wYWNpdHlNYXNrRmlsdGVyKSI+DQoJCQk8bGluZWFyR3JhZGllbnQgaWQ9IlhNTElEXzZfIiBncmFkaWVudFVuaXRzPSJ1c2VyU3BhY2VPblVzZSIgeDE9IjcuMTIyMSIgeTE9IjAuMTAzIiB4Mj0iNy4xMjIxIiB5Mj0iNS4yMzQ0Ij4NCgkJCQk8c3RvcCAgb2Zmc2V0PSIwIiBzdHlsZT0ic3RvcC1jb2xvcjojRkZGRkZGIi8+DQoJCQkJPHN0b3AgIG9mZnNldD0iMSIgc3R5bGU9InN0b3AtY29sb3I6IzAwMDAwMCIvPg0KCQkJPC9saW5lYXJHcmFkaWVudD4NCgkJCTxyZWN0IHg9IjMuMTk5IiB5PSIwLjMzOSIgb3BhY2l0eT0iMC43IiBmaWxsPSJ1cmwoI1hNTElEXzZfKSIgd2lkdGg9IjcuODQ2IiBoZWlnaHQ9IjQuNjAxIi8+DQoJCTwvZz4NCgk8L21hc2s+DQoJPGVsbGlwc2UgbWFzaz0idXJsKCNYTUxJRF81XykiIGZpbGw9IiNGRkZGRkYiIGN4PSI2Ljk3NSIgY3k9IjIuNjQiIHJ4PSIzLjQ5NCIgcnk9IjEuOTQ2Ii8+DQo8L2c+DQo8L3N2Zz4NPC9zdmc+Cg==);");
+    assertXPath(pDoc, "/html/body/ul", "style", "list-style-image: url(data:image/svg+xml;base64,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);");
 }
 
 DECLARE_HTMLEXPORT_TEST(testTdf83890, "tdf83890.odt")