Represents a predefined ToUnicode CMap as the ones described in ISO 32000-2:2020 "9.10.2 Mapping character codes to Unicode values" that can be downloaded from https://github.com/adobe-type-tools/mapping-resources-pdf, folder "pdf2unicode". More...

#include <PdfPredefinedToUnicodeCMap.h>

Inheritance diagram for PoDoFo::PdfPredefinedToUnicodeCMap:

Public Member Functions
const PdfEncodingLimits &	GetLimits () const override

const PdfCMapEncoding &	GetToUnicodeMap ()

const PdfCMapEncoding &	GetCIDEncodingMap ()

Public Member Functions inherited from PoDoFo::PdfEncodingMap
bool	TryGetNextCharCode (std::string_view::iterator &it, const std::string_view::iterator &end, PdfCharCode &codeUnit) const
	Try decode next char code from utf8 string range.

bool	TryGetCharCode (char32_t codePoint, PdfCharCode &codeUnit) const
	Try get next char code unit from unicode code point.

bool	TryGetCharCode (const unicodeview &codePoints, PdfCharCode &codeUnit) const
	Get the char code from a span of unicode code points. More...

bool	TryGetCharCode (unsigned cid, PdfCharCode &codeUnit) const
	Try get next char code unit from cid.

bool	TryGetNextCID (std::string_view::iterator &it, const std::string_view::iterator &end, PdfCID &cid) const
	Try decode next cid from from encoded string range.

bool	TryGetNextCodePoints (std::string_view::iterator &it, const std::string_view::iterator &end, CodePointSpan &codePoints) const
	Try decode next code points from encoded string range.

bool	TryGetCodePoints (const PdfCharCode &codeUnit, CodePointSpan &codePoints) const
	Try get code points from char code unit. More...

PdfEncodingMapType	GetType () const
	Type of encoding, may be Simple or CMap. More...

virtual PdfPredefinedEncodingType	GetPredefinedEncodingType () const
	True if the encoding is builtin in a font program.

virtual bool	HasLigaturesSupport () const
	True if the encoding has ligatures support.

bool	TryGetExportObject (PdfIndirectObjectList &objects, PdfName &name, PdfObject *&obj) const
	Get an export object that will be used during font init. More...

Protected Member Functions
bool	tryGetCodePoints (const PdfCharCode &codeUnit, const unsigned *cidId, CodePointSpan &codePoints) const override
	Get code points from a code unit. More...

bool	tryGetCharCode (char32_t codePoint, PdfCharCode &codeUnit) const override
	Try get char code unit from unicode code point.

bool	tryGetCharCodeSpan (const unicodeview &ligature, PdfCharCode &codeUnit) const override
	Try get next char code unit from a ligature. More...

void	AppendToUnicodeEntries (OutputStream &stream, charbuff &temp) const override
	During a WriteToUnicodeCMap append "beginbfchar" and "beginbfrange" entries. More...

void	AppendCIDMappingEntries (OutputStream &stream, const PdfFont &font, charbuff &temp) const override
	During a PdfEncoding::ExportToFont() append "begincidchar" and/or "begincidrange" entries. More...

Protected Member Functions inherited from PoDoFo::PdfEncodingMap
virtual bool	tryGetNextCharCode (std::string_view::iterator &it, const std::string_view::iterator &end, PdfCharCode &codeUnit) const
	Try get next char code unit from a utf8 string range. More...

virtual void	getExportObject (PdfIndirectObjectList &objects, PdfName &name, PdfObject *&obj) const
	Get an export object that will be used during font init. More...

virtual int	GetWModeRaw () const
	A code that specifies the writing mode for any CIDFont with which this map is combined (make sense when this is a CMap) More...

virtual void	AppendCodeSpaceRange (OutputStream &stream, charbuff &temp) const

Friends
class	PdfEncodingFactory

Additional Inherited Members
Static Protected Member Functions inherited from PoDoFo::PdfEncodingMap
static void	AppendUTF16CodeTo (OutputStream &stream, char32_t codePoint, std::u16string &u16tmp)

static void	AppendUTF16CodeTo (OutputStream &stream, const unicodeview &codePoints, std::u16string &u16tmp)

Detailed Description

Represents a predefined ToUnicode CMap as the ones described in ISO 32000-2:2020 "9.10.2 Mapping character codes to Unicode values" that can be downloaded from https://github.com/adobe-type-tools/mapping-resources-pdf, folder "pdf2unicode".

Member Function Documentation

◆ AppendCIDMappingEntries()

void PdfPredefinedToUnicodeCMap::AppendCIDMappingEntries	(	OutputStream &	stream,
		const PdfFont &	font,
		charbuff &	temp
	)		const

overrideprotectedvirtual

During a PdfEncoding::ExportToFont() append "begincidchar" and/or "begincidrange" entries.

See Adobe tecnichal notes #5014\

To be called by PdfEncoding

Implements PoDoFo::PdfEncodingMap.

◆ AppendToUnicodeEntries()

void PdfPredefinedToUnicodeCMap::AppendToUnicodeEntries	(	OutputStream &	stream,
		charbuff &	temp
	)		const

overrideprotectedvirtual

During a WriteToUnicodeCMap append "beginbfchar" and "beginbfrange" entries.

"bf" stands for Base Font, see Adobe tecnichal notes #5014

To be called by PdfEncoding

Implements PoDoFo::PdfEncodingMap.

◆ tryGetCharCodeSpan()

bool PdfPredefinedToUnicodeCMap::tryGetCharCodeSpan	(	const unicodeview &	ligature,
		PdfCharCode &	codeUnit
	)		const

overrideprotectedvirtual

Try get next char code unit from a ligature.

Parameters

ligature the span has at least 2 unicode code points

Remarks: Default implementation just throws

Reimplemented from PoDoFo::PdfEncodingMap.

◆ tryGetCodePoints()

bool PdfPredefinedToUnicodeCMap::tryGetCodePoints	(	const PdfCharCode &	codeUnit,
		const unsigned *	cidId,
		CodePointSpan &	codePoints
	)		const

overrideprotectedvirtual

Get code points from a code unit.

Parameters

cidId CID identifier that if available some encodings can benefit to fetch code points faster

Implements PoDoFo::PdfEncodingMap.

The documentation for this class was generated from the following files:

src/podofo/main/PdfPredefinedToUnicodeCMap.h
src/podofo/main/PdfPredefinedToUnicodeCMap.cpp

Public Member Functions

Protected Member Functions

Friends

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ AppendCIDMappingEntries()

◆ AppendToUnicodeEntries()

◆ tryGetCharCodeSpan()

◆ tryGetCodePoints()