#include <validate_myanmar.h>

Inheritance diagram for tesseract::ValidateMyanmar:

Public Member Functions
	ValidateMyanmar (ViramaScript script, bool report_errors)

	~ValidateMyanmar () override=default

Public Member Functions inherited from tesseract::Validator
virtual	~Validator ()

Protected Member Functions
bool	ConsumeGraphemeIfValid () override

Validator::CharClass	UnicodeToCharClass (char32 ch) const override

Protected Member Functions inherited from tesseract::Validator
	Validator (ViramaScript script, bool report_errors)

bool	ValidateCleanAndSegmentInternal (GraphemeNormMode g_mode, const std::vector< char32 > &src, std::vector< std::vector< char32 > > *dest)

void	MoveResultsToDest (GraphemeNormMode g_mode, std::vector< std::vector< char32 > > *dest)

bool	IsSubscriptScript () const

bool	CodeOnlyToOutput ()

void	MultiCodePart (unsigned length)

bool	UseMultiCode (unsigned length)

virtual bool	ConsumeGraphemeIfValid ()=0

void	ComputeClassCodes (const std::vector< char32 > &text)

virtual CharClass	UnicodeToCharClass (char32 ch) const =0

void	Clear ()

Additional Inherited Members
Static Public Member Functions inherited from tesseract::Validator
static bool	ValidateCleanAndSegment (GraphemeNormMode g_mode, bool report_errors, const std::vector< char32 > &src, std::vector< std::vector< char32 > > *dest)

static bool	IsZeroWidthMark (char32 ch)

Static Public Attributes inherited from tesseract::Validator
static const char32	kZeroWidthSpace = 0x200B

static const char32	kZeroWidthNonJoiner = 0x200C

static const char32	kZeroWidthJoiner = 0x200D

static const char32	kLeftToRightMark = 0x200E

static const char32	kRightToLeftMark = 0x200F

static const char32	kInvalid = 0xfffd

Protected Types inherited from tesseract::Validator
enum class	CharClass { kConsonant = 'C' , kVowel = 'V' , kVirama = 'H' , kMatra = 'M' , kMatraPiece = 'P' , kVowelModifier = 'D' , kZeroWidthNonJoiner = 'z' , kZeroWidthJoiner = 'Z' , kVedicMark = 'v' , kNukta = 'N' , kRobat = 'R' , kOther = 'O' , kWhitespace = ' ' , kCombiner = 'c' }

using	IndicPair = std::pair< CharClass, char32 >

Static Protected Member Functions inherited from tesseract::Validator
static std::unique_ptr< Validator >	ScriptValidator (ViramaScript script, bool report_errors)

static ViramaScript	MostFrequentViramaScript (const std::vector< char32 > &utf32)

static bool	IsVirama (char32 unicode)

static bool	IsVedicAccent (char32 unicode)

Protected Attributes inherited from tesseract::Validator
ViramaScript	script_

std::vector< IndicPair >	codes_

std::vector< std::vector< char32 > >	parts_

std::vector< char32 >	output_

unsigned	codes_used_

unsigned	output_used_

bool	report_errors_

Static Protected Attributes inherited from tesseract::Validator
static const int	kIndicCodePageSize = 128

static const char32	kMinIndicUnicode = 0x900

static const char32	kMaxSinhalaUnicode = 0xdff

static const char32	kMaxViramaScriptUnicode = 0x17ff

static const char32	kSinhalaVirama = 0xdca

static const char32	kMyanmarVirama = 0x1039

static const char32	kKhmerVirama = 0x17d2

static const char32	kJavaneseVirama = 0xa9c0

static const char32	kMaxJavaneseUnicode = 0xa9df

Detailed Description

Definition at line 9 of file validate_myanmar.h.

Constructor & Destructor Documentation

◆ ValidateMyanmar()

tesseract::ValidateMyanmar::ValidateMyanmar	(	ViramaScript	script,
		bool	report_errors
	)

inline

Definition at line 11 of file validate_myanmar.h.

11: Validator(script, report_errors) {}

tesseract::Validator::Validator

Validator(ViramaScript script, bool report_errors)

Definition: validator.h:137

◆ ~ValidateMyanmar()

tesseract::ValidateMyanmar::~ValidateMyanmar ( )

overridedefault

Member Function Documentation

◆ ConsumeGraphemeIfValid()

bool tesseract::ValidateMyanmar::ConsumeGraphemeIfValid ( )

overrideprotectedvirtual

Implements tesseract::Validator.

Definition at line 13 of file validate_myanmar.cpp.

                                             {
  const unsigned num_codes = codes_.size();
  if (codes_used_ == num_codes) {
    return true;
  }
  // Other.
  if (IsMyanmarOther(codes_[codes_used_].second)) {
    UseMultiCode(1);
    return true;
  }
  // Kinzi.
  if (codes_used_ + 2 < num_codes && codes_[codes_used_].second == 0x1004 &&
      codes_[codes_used_ + 1].second == kMyanmarAsat &&
      codes_[codes_used_ + 2].second == kMyanmarVirama) {
    ASSERT_HOST(!CodeOnlyToOutput());
    ASSERT_HOST(!CodeOnlyToOutput());
    if (UseMultiCode(3)) {
      return true;
    }
  }
  // Base consonant/vowel. NOTE that since everything in Myanmar appears to be
  // optional, except the base, this is the only place where invalid input can
  // be detected and false returned.
  if (IsMyanmarLetter(codes_[codes_used_].second)) {
    if (UseMultiCode(1)) {
      return true;
    }
  } else {
    if (report_errors_) {
      tprintf("Invalid start of Myanmar syllable:0x%x\n", codes_[codes_used_].second);
    }
    return false; // One of these is required.
  }
  if (ConsumeSubscriptIfPresent()) {
    return true;
  }
  ConsumeOptionalSignsIfPresent();
  // What we have consumed so far is a valid syllable.
  return true;
}

◆ UnicodeToCharClass()

Validator::CharClass tesseract::ValidateMyanmar::UnicodeToCharClass ( char32 ch ) const

overrideprotectedvirtual

Implements tesseract::Validator.

Definition at line 62 of file validate_myanmar.cpp.

                                                                      {
  if (IsMyanmarLetter(ch)) {
    return CharClass::kConsonant;
  }
  return CharClass::kOther;
}

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

/media/home/debian/src/github/tesseract-ocr/tesseract/src/training/unicharset/validate_myanmar.h
/media/home/debian/src/github/tesseract-ocr/tesseract/src/training/unicharset/validate_myanmar.cpp

Public Member Functions

Protected Member Functions