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-rw-r--r--vcl/qa/cppunit/pdfexport/pdfexport.cxx217
1 files changed, 217 insertions, 0 deletions
diff --git a/vcl/qa/cppunit/pdfexport/pdfexport.cxx b/vcl/qa/cppunit/pdfexport/pdfexport.cxx
index a904a5dc638d..ba8df2f1a616 100644
--- a/vcl/qa/cppunit/pdfexport/pdfexport.cxx
+++ b/vcl/qa/cppunit/pdfexport/pdfexport.cxx
@@ -8,6 +8,7 @@
*/
#include <config_features.h>
+#include <config_test.h>
#include <com/sun/star/frame/Desktop.hpp>
#include <com/sun/star/frame/XStorable.hpp>
@@ -25,6 +26,7 @@
#include <tools/zcodec.hxx>
#if HAVE_FEATURE_PDFIUM
#include <fpdf_edit.h>
+#include <fpdf_text.h>
#include <fpdfview.h>
#endif
@@ -67,6 +69,16 @@ public:
void testTdf99680();
void testTdf99680_2();
void testTdf108963();
+#if !TEST_FONTS_MISSING
+ /// Test writing ToUnicode CMAP for LTR ligatures.
+ void testTdf115117_1();
+ /// Text extracting LTR text with ligatures.
+ void testTdf115117_1a();
+ /// Test writing ToUnicode CMAP for RTL ligatures.
+ void testTdf115117_2();
+ /// Text extracting RTL text with ligatures.
+ void testTdf115117_2a();
+#endif
#endif
CPPUNIT_TEST_SUITE(PdfExportTest);
@@ -85,6 +97,12 @@ public:
CPPUNIT_TEST(testTdf99680);
CPPUNIT_TEST(testTdf99680_2);
CPPUNIT_TEST(testTdf108963);
+#if !TEST_FONTS_MISSING
+ CPPUNIT_TEST(testTdf115117_1);
+ CPPUNIT_TEST(testTdf115117_1a);
+ CPPUNIT_TEST(testTdf115117_2);
+ CPPUNIT_TEST(testTdf115117_2a);
+#endif
#endif
CPPUNIT_TEST_SUITE_END();
};
@@ -760,6 +778,205 @@ void PdfExportTest::testTdf108963()
CPPUNIT_ASSERT_EQUAL(1, nYellowPathCount);
}
+
+#if !TEST_FONTS_MISSING
+// This requires Carlito font, if it is missing the test will most likely
+// fail.
+void PdfExportTest::testTdf115117_1()
+{
+ vcl::filter::PDFDocument aDocument;
+ load("tdf115117-1.odt", aDocument);
+
+ vcl::filter::PDFObjectElement* pToUnicode = nullptr;
+
+ // Get access to ToUnicode of the first font
+ for (const auto& aElement : aDocument.GetElements())
+ {
+ auto pObject = dynamic_cast<vcl::filter::PDFObjectElement*>(aElement.get());
+ if (!pObject)
+ continue;
+ auto pType = dynamic_cast<vcl::filter::PDFNameElement*>(pObject->Lookup("Type"));
+ if (pType && pType->GetValue() == "Font")
+ {
+ auto pToUnicodeRef = dynamic_cast<vcl::filter::PDFReferenceElement*>(pObject->Lookup("ToUnicode"));
+ CPPUNIT_ASSERT(pToUnicodeRef);
+ pToUnicode = pToUnicodeRef->LookupObject();
+ break;
+ }
+ }
+
+ CPPUNIT_ASSERT(pToUnicode);
+ auto pStream = pToUnicode->GetStream();
+ CPPUNIT_ASSERT(pStream);
+ SvMemoryStream aObjectStream;
+ ZCodec aZCodec;
+ aZCodec.BeginCompression();
+ pStream->GetMemory().Seek(0);
+ aZCodec.Decompress(pStream->GetMemory(), aObjectStream);
+ CPPUNIT_ASSERT(aZCodec.EndCompression());
+ aObjectStream.Seek(0);
+ // The first values, <01> <02> etc., are glyph ids, they might change order
+ // if we changed how font subsets are created.
+ // The second values, <00740069> etc., are Unicode code points in hex,
+ // <00740069> is U+0074 and U+0069 i.e. "ti" which is a ligature in
+ // Carlito/Callibri. This test is failing if any of the second values
+ // changed which means we are not detecting ligatures and writing CMAP
+ // entries for them correctly. If glyph order in the subset changes then
+ // the order here will changes and the PDF has to be carefully inspected to
+ // ensure that the new values are correct before updating the string below.
+ OString aCmap("9 beginbfchar\n"
+ "<01> <00740069>\n"
+ "<02> <0020>\n"
+ "<03> <0074>\n"
+ "<04> <0065>\n"
+ "<05> <0073>\n"
+ "<06> <00660069>\n"
+ "<07> <0066006C>\n"
+ "<08> <006600660069>\n"
+ "<09> <00660066006C>\n"
+ "endbfchar");
+ auto pStart = static_cast<const char*>(aObjectStream.GetData());
+ const char* pEnd = pStart + aObjectStream.GetSize();
+ auto it = std::search(pStart, pEnd, aCmap.getStr(), aCmap.getStr() + aCmap.getLength());
+ CPPUNIT_ASSERT(it != pEnd);
+}
+
+// This requires DejaVu Sans font, if it is missing the test will most likely
+// fail.
+void PdfExportTest::testTdf115117_2()
+{
+ // See the comments in testTdf115117_1() for explanation.
+
+ vcl::filter::PDFDocument aDocument;
+ load("tdf115117-2.odt", aDocument);
+
+ vcl::filter::PDFObjectElement* pToUnicode = nullptr;
+
+ for (const auto& aElement : aDocument.GetElements())
+ {
+ auto pObject = dynamic_cast<vcl::filter::PDFObjectElement*>(aElement.get());
+ if (!pObject)
+ continue;
+ auto pType = dynamic_cast<vcl::filter::PDFNameElement*>(pObject->Lookup("Type"));
+ if (pType && pType->GetValue() == "Font")
+ {
+ auto pToUnicodeRef = dynamic_cast<vcl::filter::PDFReferenceElement*>(pObject->Lookup("ToUnicode"));
+ CPPUNIT_ASSERT(pToUnicodeRef);
+ pToUnicode = pToUnicodeRef->LookupObject();
+ break;
+ }
+ }
+
+ CPPUNIT_ASSERT(pToUnicode);
+ auto pStream = pToUnicode->GetStream();
+ CPPUNIT_ASSERT(pStream);
+ SvMemoryStream aObjectStream;
+ ZCodec aZCodec;
+ aZCodec.BeginCompression();
+ pStream->GetMemory().Seek(0);
+ aZCodec.Decompress(pStream->GetMemory(), aObjectStream);
+ CPPUNIT_ASSERT(aZCodec.EndCompression());
+ aObjectStream.Seek(0);
+ OString aCmap("7 beginbfchar\n"
+ "<01> <06440627>\n"
+ "<02> <0020>\n"
+ "<03> <0641>\n"
+ "<04> <0642>\n"
+ "<05> <0648>\n"
+ "<06> <06440627>\n"
+ "<07> <0628>\n"
+ "endbfchar");
+ auto pStart = static_cast<const char*>(aObjectStream.GetData());
+ const char* pEnd = pStart + aObjectStream.GetSize();
+ auto it = std::search(pStart, pEnd, aCmap.getStr(), aCmap.getStr() + aCmap.getLength());
+ CPPUNIT_ASSERT(it != pEnd);
+}
+
+void PdfExportTest::testTdf115117_1a()
+{
+ // Import the bugdoc and export as PDF.
+ OUString aURL = m_directories.getURLFromSrc(DATA_DIRECTORY) + "tdf115117-1.odt";
+ mxComponent = loadFromDesktop(aURL);
+ CPPUNIT_ASSERT(mxComponent.is());
+
+ uno::Reference<frame::XStorable> xStorable(mxComponent, uno::UNO_QUERY);
+ utl::TempFile aTempFile;
+ aTempFile.EnableKillingFile();
+ utl::MediaDescriptor aMediaDescriptor;
+ aMediaDescriptor["FilterName"] <<= OUString("writer_pdf_Export");
+ xStorable->storeToURL(aTempFile.GetURL(), aMediaDescriptor.getAsConstPropertyValueList());
+
+ // Parse the export result with pdfium.
+ SvFileStream aFile(aTempFile.GetURL(), StreamMode::READ);
+ SvMemoryStream aMemory;
+ aMemory.WriteStream(aFile);
+ mpPdfDocument = FPDF_LoadMemDocument(aMemory.GetData(), aMemory.GetSize(), /*password=*/nullptr);
+ CPPUNIT_ASSERT(mpPdfDocument);
+
+ // The document has one page.
+ CPPUNIT_ASSERT_EQUAL(1, FPDF_GetPageCount(mpPdfDocument));
+ mpPdfPage = FPDF_LoadPage(mpPdfDocument, /*page_index=*/0);
+ CPPUNIT_ASSERT(mpPdfPage);
+
+ auto pPdfTextPage = FPDFText_LoadPage(mpPdfPage);
+ CPPUNIT_ASSERT(pPdfTextPage);
+
+ // Extract the text from the page. This pdfium API is a bit higher level
+ // than we want and might apply heuristic that give false positive, but it
+ // is a good approximation in addition to the check in testTdf115117_1().
+ int nChars = FPDFText_CountChars(pPdfTextPage);
+ CPPUNIT_ASSERT_EQUAL(44, nChars);
+
+ OUString aExpectedText = "ti ti test ti\r\nti test fi fl ffi ffl test fi";
+ std::vector<sal_uInt32> aChars(nChars);
+ for (int i = 0; i < nChars; i++)
+ aChars[i] = FPDFText_GetUnicode(pPdfTextPage, i);
+ OUString aActualText(aChars.data(), aChars.size());
+ CPPUNIT_ASSERT_EQUAL(aExpectedText, aActualText);
+}
+
+void PdfExportTest::testTdf115117_2a()
+{
+ // See the comments in testTdf115117_1a() for explanation.
+
+ // Import the bugdoc and export as PDF.
+ OUString aURL = m_directories.getURLFromSrc(DATA_DIRECTORY) + "tdf115117-2.odt";
+ mxComponent = loadFromDesktop(aURL);
+ CPPUNIT_ASSERT(mxComponent.is());
+
+ uno::Reference<frame::XStorable> xStorable(mxComponent, uno::UNO_QUERY);
+ utl::TempFile aTempFile;
+ aTempFile.EnableKillingFile();
+ utl::MediaDescriptor aMediaDescriptor;
+ aMediaDescriptor["FilterName"] <<= OUString("writer_pdf_Export");
+ xStorable->storeToURL(aTempFile.GetURL(), aMediaDescriptor.getAsConstPropertyValueList());
+
+ // Parse the export result with pdfium.
+ SvFileStream aFile(aTempFile.GetURL(), StreamMode::READ);
+ SvMemoryStream aMemory;
+ aMemory.WriteStream(aFile);
+ mpPdfDocument = FPDF_LoadMemDocument(aMemory.GetData(), aMemory.GetSize(), /*password=*/nullptr);
+ CPPUNIT_ASSERT(mpPdfDocument);
+
+ // The document has one page.
+ CPPUNIT_ASSERT_EQUAL(1, FPDF_GetPageCount(mpPdfDocument));
+ mpPdfPage = FPDF_LoadPage(mpPdfDocument, /*page_index=*/0);
+ CPPUNIT_ASSERT(mpPdfPage);
+
+ auto pPdfTextPage = FPDFText_LoadPage(mpPdfPage);
+ CPPUNIT_ASSERT(pPdfTextPage);
+
+ int nChars = FPDFText_CountChars(pPdfTextPage);
+ CPPUNIT_ASSERT_EQUAL(13, nChars);
+
+ OUString aExpectedText = u"\u0627\u0644 \u0628\u0627\u0644 \u0648\u0642\u0641 \u0627\u0644";
+ std::vector<sal_uInt32> aChars(nChars);
+ for (int i = 0; i < nChars; i++)
+ aChars[i] = FPDFText_GetUnicode(pPdfTextPage, i);
+ OUString aActualText(aChars.data(), aChars.size());
+ CPPUNIT_ASSERT_EQUAL(aExpectedText, aActualText);
+}
+#endif
#endif
CPPUNIT_TEST_SUITE_REGISTRATION(PdfExportTest);
generated by cgit (git 2.34.1) at 2024-07-10 17:30:43 +0000