Bug fix 529: error /toUnicode

[Wugengxian]

Description of the new Feature/Bugfix

OpenPDF should mapping the processedChar to origin char.

The /Tounicode after changing

The copy value of "ετε" in html

Related Issue: #529

Unit-Tests for the new Feature/Bugfix

• Unit-Tests added to reproduce the bug
• Unit-Tests added to the added feature

void testToUnicode() throws Exception {
        Document document = new Document();
        Document.compress = false;
        FileOutputStream outputStream = new FileOutputStream("output.pdf");
        PdfWriter.getInstance(document, outputStream);
        document.open();

        document.add(new Chunk("ετε", new Font(Font.SYMBOL)));
        document.close();
        PdfTextExtractor pdfTextExtractor = new PdfTextExtractor(new PdfReader("output.pdf"));
        Assertions.assertEquals("ετε", pdfTextExtractor.getTextFromPage(1));
    }

other Test:
It can pass the failed test of pull request #521 after providing true UnicodeMap

OpenPDF/openpdf/src/test/java/com/lowagie/text/pdf/parser/PdfTextExtractorTest.java

Lines 85 to 101 in 23fba37

	@Test
	void getTextFromPageWithParagraphs_expectsTextHasNoMultipleSpaces() throws IOException {
	// given
	final Paragraph loremIpsumParagraph = new Paragraph(LOREM_IPSUM);
	loremIpsumParagraph.setAlignment(Element.ALIGN_JUSTIFIED);
	byte[] pdfBytes = createSimpleDocumentWithElements(
	loremIpsumParagraph,
	Chunk.NEWLINE,
	loremIpsumParagraph
	);
	final String expected = LOREM_IPSUM + " " + LOREM_IPSUM;
	// when
	final String extracted = new PdfTextExtractor(new PdfReader(pdfBytes)).getTextFromPage(1);
	// then
	assertThat(extracted, equalToCompressingWhiteSpace(expected));
	assertThat(extracted, not(containsString(" ")));
	}

Compatibilities Issues

No

Testing details

No

[sonarqubecloud]

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