A bidirectional map from character code units to unspecified code points. More...

#include <PdfCharCodeMap.h>

Public Member Functions
	PdfCharCodeMap (PdfCharCodeMap &&map) noexcept

void	PushMapping (const PdfCharCode &codeUnit, const codepointview &codePoints)
	Method to push a mapping.

void	PushMapping (const PdfCharCode &codeUnit, codepoint codePoint)
	Convenience method to push a single code point mapping.

void	PushRange (const PdfCharCode &srcCodeLo, unsigned size, codepoint dstCodeLo)
	Push a range mapping in the form "srcCodeLo srcCodeHi dstCodeLo".

void	PushRange (const PdfCharCode &srcCodeLo, unsigned size, const codepointview &dstCodeLo)
	Push a range mapping in the form "srcCodeLo srcCodeHi dstCodeLo".

bool	TryGetCodePoints (const PdfCharCode &codeUnit, CodePointSpan &codePoints) const
	Returns false when no mapped identifiers are not found in the map.

bool	TryGetNextCharCode (std::string_view::iterator &it, const std::string_view::iterator &end, PdfCharCode &code) const
	Try get char code from utf8 encoded range.

bool	TryGetCharCode (const codepointview &codePoints, PdfCharCode &code) const
	Try get char code from unicode code points.

bool	TryGetCharCode (codepoint codePoint, PdfCharCode &code) const
	Try get char code from unicode code point.

PdfCharCodeMap &	operator= (PdfCharCodeMap &&map) noexcept

const PdfEncodingLimits &	GetLimits () const

bool	IsEmpty () const

bool	IsTrivialIdentity () const
	Determines if the map is a trivial identity.

std::vector< CodeSpaceRange >	GetCodeSpaceRanges () const

const CodeUnitMap &	GetMappings () const
	Provides direct mappings.

const CodeUnitRanges &	GetRanges () const
	Provides range mappings.

Detailed Description

A bidirectional map from character code units to unspecified code points.

Remarks: The actual code point nature is unspecified, but it can either be unicode code points or CID(s) as used in CID keyed fonts. For generic terminology see https://en.wikipedia.org/wiki/Character_encoding#Terminology See also 5014.CIDFont_Spec, 2.1 Terminology

Member Function Documentation

◆ PushMapping()

void PdfCharCodeMap::PushMapping	(	const PdfCharCode &	codeUnit,
		const codepointview &	codePoints
	)

Method to push a mapping.

Given string can be a ligature, es "ffi"

Remarks: The mapping is ignored if codePoints is empty

◆ PushRange() [1/2]

void PdfCharCodeMap::PushRange	(	const PdfCharCode &	srcCodeLo,
		unsigned	size,
		codepoint	dstCodeLo
	)

Push a range mapping in the form "srcCodeLo srcCodeHi dstCodeLo".

See 5014.CIDFont_Spec, 7.2 Operator summary for begincidrange specifications

Remarks: The range is ignored if srcCodeHi < srcCodeLo

◆ PushRange() [2/2]

void PdfCharCodeMap::PushRange	(	const PdfCharCode &	srcCodeLo,
		unsigned	size,
		const codepointview &	dstCodeLo
	)

Push a range mapping in the form "srcCodeLo srcCodeHi dstCodeLo".

See 5014.CIDFont_Spec, 7.2 Operator summary for beginbfrange specifications

Remarks: The range is ignored if srcCodeHi < srcCodeLo or dstCodeLo is empty

◆ TryGetCharCode()

bool PdfCharCodeMap::TryGetCharCode	(	const codepointview &	codePoints,
		PdfCharCode &	code
	)		const

Try get char code from unicode code points.

Parameters

codePoints sequence of unicode code points. All the sequence must match

◆ TryGetNextCharCode()

bool PdfCharCodeMap::TryGetNextCharCode	(	std::string_view::iterator &	it,
		const std::string_view::iterator &	end,
		PdfCharCode &	code
	)		const

Try get char code from utf8 encoded range.

Remarks: It assumes it != and it will consumes the iterator also when returning false

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

src/podofo/main/PdfCharCodeMap.h
src/podofo/main/PdfCharCodeMap.cpp