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Posted to dev@pdfbox.apache.org by "CHristian Haegele (Jira)" <ji...@apache.org> on 2024/01/16 06:48:00 UTC
[jira] [Created] (PDFBOX-5752) font errors after copying a page to another document
CHristian Haegele created PDFBOX-5752:
-----------------------------------------
Summary: font errors after copying a page to another document
Key: PDFBOX-5752
URL: https://issues.apache.org/jira/browse/PDFBOX-5752
Project: PDFBox
Issue Type: Bug
Components: Parsing
Affects Versions: 3.0.1 PDFBox
Reporter: CHristian Haegele
Attachments: empty.pdf, image-2024-01-16-07-41-16-462.png, image-2024-01-16-07-46-04-195.png, image-2024-01-16-07-47-05-883.png, roboto-14.pdf, target-merged882552058302116763.pdf
I try to merge import a page into a pdf document and copy the font resources. With PDFBOX 2.0 the code worked perfectly fine, as expected, there is a result document in including the required, embedded fonts.
Essentially I'm doing this steps in the code, while the first document is one empty page PDF/A, and the second document contains the roboto font PDF/A. All fonts are embedded.
{code:java}
PDDocument targetDoc = Loader.loadPDF(targetDocBytes);
PDPage sourcePage = Loader.loadPDF(data).getPage(0);
final var copiedPage = targetDoc.importPage(sourcePage);
copiedPage.setResources(sourcePage.getResources());{code}
In PDFBOX 3.0 it doesn't seeem to work any more, the document is corrupted if you open it in the Adobe Acrobat.
It shows a lot of errors, if you open it with the PDFBOX PreflightParser.
Here the error messages of the preflight parser:
{{1.4 Trailer Syntax error, /XRef cross reference streams are not allowed}}
{{3.3.1 Glyph error, The character code 0 in the font program "BCDEEE+Calibri" is missing from the Character Encoding}}
{{3.3.1 Glyph error, The character code 0 in the font program "BCDEEE+Calibri" is missing from the Character Encoding}}
{{3.3.1 Glyph error, The character code 0 in the font program "BCDEEE+Calibri" is missing from the Character Encoding}}
{{3.3.1 Glyph error, The character code 0 in the font program "BCDEEE+Calibri" is missing from the Character Encoding}}
{{3.3.1 Glyph error, The character code 0 in the font program "BCDEEE+Calibri" is missing from the Character Encoding}}
{{3.1.3 Invalid Font definition, BCDFEE+Roboto-Regular: FontFile entry is missing from FontDescriptor}}
{{3.1.14 Invalid Font definition, Unknown font type: XML}}
{{3.3.1 Glyph error, The character code 0 in the font program "BCDEEE+Calibri" is missing from the Character Encoding}}
{{3.3.1 Glyph error, The character code 0 in the font program "BCDEEE+Calibri" is missing from the Character Encoding}}
{{3.3.1 Glyph error, The character code 0 in the font program "BCDEEE+Calibri" is missing from the Character Encoding}}
{{3.3.1 Glyph error, The character code 0 in the font program "BCDEEE+Calibri" is missing from the Character Encoding}}
{{3.3.1 Glyph error, The character code 0 in the font program "BCDEEE+Calibri" is missing from the Character Encoding}}
{{3.3.1 Glyph error, The character code 0 in the font program "BCDEEE+Calibri" is missing from the Character Encoding}}
{{3.3.1 Glyph error, The character code 0 in the font program "BCDEEE+Calibri" is missing from the Character Encoding}}
{{3.3.1 Glyph error, The character code 0 in the font program "BCDEEE+Calibri" is missing from the Character Encoding}}
{{3.3.1 Glyph error, The character code 0 in the font program "BCDEEE+Calibri" is missing from the Character Encoding}}
{{3.1.8 Invalid Font definition}}
{{3.1.2 Invalid Font definition, BCDGEE+TimesNewRomanPS-BoldMT: some mandatory fields are missing from the FontDescriptor: Type, ItalicAngle, FontBBox, Ascent, FontName, StemV, Flags, CapHeight, Descent.}}
{{3.1.3 Invalid Font definition, null: FontFile entry is missing from FontDescriptor}}
{{3.3.2 Glyph error, invalid font dictionary ==> }}
and here the complete test case. I used PDFBox 3.0.1 and the newest snapshot version from 15.01.2024.
{code:java}
@Test
void importPageWithFonts_validateFontInfo() throws IOException {
// given
final var targetDocBytes = IOUtils.toByteArray(PdfUtilitiesTest.class.getClassLoader().getResourceAsStream("empty.pdf"));
String[] additionalFiles = new String[]{
"roboto-14.pdf",
};
PDDocument targetDoc = Loader.loadPDF(targetDocBytes);
// when
for (String fileName : Arrays.asList(additionalFiles)) {
byte[] data = IOUtils.toByteArray(PdfUtilitiesTest.class.getClassLoader().getResourceAsStream(fileName));
// verify source is valid
PDPage sourcePage = Loader.loadPDF(data).getPage(0);
final var copiedPage = targetDoc.importPage(sourcePage);
copiedPage.setResources(sourcePage.getResources());
targetDoc.save(Files.createTempFile("merged-fonts", ".pdf").toFile());
}
Path tmpFile = Files.createTempFile("fscd-merged", ".pdf");
targetDoc.save(tmpFile.toFile(), CompressParameters.DEFAULT_COMPRESSION);
// then
// font errors, e.g. Invalid Font definition, BCDFEE+Roboto-Regular: FontFile entry is missing from FontDescriptor
assertFontsAreValid(tmpFile);
}
private static void assertFontsAreValid(Path tmpFile) throws IOException {
PreflightParser parser = new PreflightParser(tmpFile.toFile());
final var documentToVerify = (PreflightDocument) parser.parse();
// Get validation result
final var result = documentToVerify.validate();
final var resultString = result.getErrorsList().stream()
.filter(err -> !err.getErrorCode()
.matches("7\\.11\\.2|3\\.1\\.11|2\\.1\\.2|2\\.2\\.1|2\\.4\\.3")) // filter findings from the source documents
.map(err -> err.getErrorCode() + " " + err.getDetails()).collect(Collectors.joining("\n"));
assertTrue(resultString.isBlank(), resultString);
}
{code}
The problem is still present with the snapshot version 3.0.2-2024-0115.083906-63.
Here is the output preflight parser output of the snapshot version:
{{1.4 Trailer Syntax error, /XRef cross reference streams are not allowed}}
{{3.3.1 Glyph error, The character code 0 in the font program "BCDEEE+Calibri" is missing from the Character Encoding}}
{{3.3.1 Glyph error, The character code 0 in the font program "BCDEEE+Calibri" is missing from the Character Encoding}}
{{3.3.1 Glyph error, The character code 0 in the font program "BCDEEE+Calibri" is missing from the Character Encoding}}
{{3.3.1 Glyph error, The character code 0 in the font program "BCDEEE+Calibri" is missing from the Character Encoding}}
{{3.3.1 Glyph error, The character code 0 in the font program "BCDEEE+Calibri" is missing from the Character Encoding}}
The input displays correctly:
!image-2024-01-16-07-47-05-883.png!
The output file doesn't display the font correctly:
!image-2024-01-16-07-46-04-195.png!
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