FILE_LINE_READER Class Reference

A LINE_READER that reads from an open file. More...

#include <richio.h>

Inheritance diagram for FILE_LINE_READER:

Public Member Functions
	FILE_LINE_READER (const wxString &aFileName, unsigned aStartingLineNumber=0, unsigned aMaxLineLength=LINE_READER_LINE_DEFAULT_MAX)
	Take aFileName and the size of the desired line buffer and opens the file and assumes the obligation to close it.
	FILE_LINE_READER (FILE *aFile, const wxString &aFileName, bool doOwn=true, unsigned aStartingLineNumber=0, unsigned aMaxLineLength=LINE_READER_LINE_DEFAULT_MAX)
	Take an open FILE and the size of the desired line buffer and takes ownership of the open file, i.e.
	~FILE_LINE_READER ()
	May or may not close the open file, depending on doOwn in constructor.
char *	ReadLine () override
	Read a line of text into the buffer and increments the line number counter.
void	Rewind ()
	Rewind the file and resets the line number back to zero.
long int	FileLength ()
long int	CurPos ()
virtual const wxString &	GetSource () const
	Returns the name of the source of the lines in an abstract sense.
char *	Line () const
	Return a pointer to the last line that was read in.
	operator char * () const
	A casting operator that returns a char* pointer to the start of the line buffer.
virtual unsigned	LineNumber () const
	Return the line number of the last line read from this LINE_READER.
unsigned	Length () const
	Return the number of bytes in the last line read from this LINE_READER.

Protected Member Functions
void	expandCapacity (unsigned aNewsize)
	Will expand the capacity of line up to maxLineLength but not greater, so be careful about making assumptions of capacity after calling this.

Protected Attributes
bool	m_iOwn
	if I own the file, I'll promise to close it, else not.
FILE *	m_fp
	I may own this file, but might not.
unsigned	m_length
	no. bytes in line before trailing nul.
unsigned	m_lineNum
char *	m_line
	the read line of UTF8 text
unsigned	m_capacity
	no. bytes allocated for line.
unsigned	m_maxLineLength
	maximum allowed capacity using resizing.
wxString	m_source
	origin of text lines, e.g. filename or "clipboard"

Detailed Description

A LINE_READER that reads from an open file.

File must be already open so that this class can exist without any UI policy.

Definition at line 184 of file richio.h.

Constructor & Destructor Documentation

FILE_LINE_READER() [1/2]

FILE_LINE_READER::FILE_LINE_READER	(	const wxString &	aFileName,
		unsigned	aStartingLineNumber = 0,
		unsigned	aMaxLineLength = LINE_READER_LINE_DEFAULT_MAX
	)

Take aFileName and the size of the desired line buffer and opens the file and assumes the obligation to close it.

Parameters

aFileName	is the name of the file to open and to use for error reporting purposes.
aStartingLineNumber	is the initial line number to report on error, and is accessible here for the case where multiple DSNLEXERs are reading from the same file in sequence, all from the same open file (with doOwn = false). Internally it is incremented by one after each ReadLine(), so the first reported line number will always be one greater than what is provided here.
aMaxLineLength	is the number of bytes to use in the line buffer.

Exceptions

IO_ERROR

if aFileName cannot be opened.

Definition at line 197 of file richio.cpp.

References _, m_fp, LINE_READER::m_lineNum, LINE_READER::m_source, KIPLATFORM::IO::SeqFOpen(), and THROW_IO_ERROR.

FILE_LINE_READER() [2/2]

FILE_LINE_READER::FILE_LINE_READER	(	FILE *	aFile,
		const wxString &	aFileName,
		bool	doOwn = true,
		unsigned	aStartingLineNumber = 0,
		unsigned	aMaxLineLength = LINE_READER_LINE_DEFAULT_MAX
	)

Take an open FILE and the size of the desired line buffer and takes ownership of the open file, i.e.

assumes the obligation to close it.

Parameters

aFile	is an open file.
aFileName	is the name of the file for error reporting purposes.
doOwn	if true, means I should close the open file, else not.
aStartingLineNumber	is the initial line number to report on error, and is accessible here for the case where multiple DSNLEXERs are reading from the same file in sequence, all from the same open file (with doOwn = false). Internally it is incremented by one after each ReadLine(), so the first reported line number will always be one greater than what is provided here.
aMaxLineLength	is the number of bytes to use in the line buffer.

Definition at line 215 of file richio.cpp.

References LINE_READER::m_lineNum, and LINE_READER::m_source.

~FILE_LINE_READER()

FILE_LINE_READER::~FILE_LINE_READER

(

)

May or may not close the open file, depending on doOwn in constructor.

Definition at line 226 of file richio.cpp.

References m_fp, and m_iOwn.

Member Function Documentation

CurPos()

long int FILE_LINE_READER::CurPos

(

)

Definition at line 243 of file richio.cpp.

References m_fp.

expandCapacity()

void LINE_READER::expandCapacity ( unsigned  aNewsize )

protectedinherited

Will expand the capacity of line up to maxLineLength but not greater, so be careful about making assumptions of capacity after calling this.

Definition at line 170 of file richio.cpp.

References LINE_READER::m_capacity, LINE_READER::m_length, LINE_READER::m_line, and LINE_READER::m_maxLineLength.

Referenced by ReadLine(), STRING_LINE_READER::ReadLine(), and INPUTSTREAM_LINE_READER::ReadLine().

FileLength()

long int FILE_LINE_READER::FileLength

(

)

Definition at line 233 of file richio.cpp.

References m_fp.

GetSource()

virtual const wxString & LINE_READER::GetSource ( ) const

inlinevirtualinherited

Returns the name of the source of the lines in an abstract sense.

This may be a file or it may be the clipboard or any other source of lines of text. The returned string is useful for reporting error messages.

Reimplemented in FILTER_READER, and WHITESPACE_FILTER_READER.

Definition at line 121 of file richio.h.

Referenced by PCB_IO_KICAD_LEGACY::biuParse(), PCB_IO_KICAD_LEGACY::degParse(), WRLPROC::GetFileName(), FILTER_READER::GetSource(), WHITESPACE_FILTER_READER::GetSource(), PCB_IO_KICAD_LEGACY::getVersion(), CMP_READER::Load(), LEGACY_NETLIST_READER::loadComponent(), LEGACY_NETLIST_READER::loadFootprintFilters(), LEGACY_NETLIST_READER::loadNet(), PCB_IO_KICAD_LEGACY::loadPAD(), SCH_IO_KICAD_LEGACY_LIB_CACHE::LoadPart(), SCH_IO_KICAD_LEGACY_LIB_CACHE::loadPin(), PCB_IO_KICAD_LEGACY::loadSETUP(), SCH_IO_KICAD_LEGACY::loadSymbol(), GPCB_FPL_CACHE::parseFOOTPRINT(), and WRLPROC::WRLPROC().

Length()

unsigned LINE_READER::Length ( ) const

inlineinherited

Return the number of bytes in the last line read from this LINE_READER.

Definition at line 155 of file richio.h.

Referenced by LEGACY_NETLIST_READER::loadComponent(), LEGACY_NETLIST_READER::loadFootprintFilters(), LEGACY_NETLIST_READER::loadNet(), FILTER_READER::ReadLine(), and WHITESPACE_FILTER_READER::ReadLine().

Line()

char * LINE_READER::Line ( ) const

inlineinherited

Return a pointer to the last line that was read in.

Definition at line 129 of file richio.h.

Referenced by bench_string_lr(), bench_string_lr_reuse(), bench_wxbis(), bench_wxbis_reuse(), bench_wxis(), bench_wxis_reuse(), PCB_IO_KICAD_LEGACY::biuParse(), PCB_IO_KICAD_LEGACY::CanReadFootprint(), PCB_IO_KICAD_LEGACY::degParse(), PCB_IO_KICAD_LEGACY::getVersion(), NETLIST_READER::GuessNetlistFileType(), PCB_IO_GEDA::ImportFootprint(), SCH_IO_KICAD_LEGACY_LIB_CACHE::Load(), CMP_READER::Load(), SCH_IO_KICAD_LEGACY_LIB_CACHE::loadAliases(), SCH_IO_KICAD_LEGACY_LIB_CACHE::loadArc(), SCH_IO_KICAD_LEGACY_LIB_CACHE::loadBezier(), SCH_IO_KICAD_LEGACY::loadBitmap(), SCH_IO_KICAD_LEGACY::loadBusAlias(), SCH_IO_KICAD_LEGACY::loadBusEntry(), SCH_IO_KICAD_LEGACY_LIB_CACHE::loadCircle(), SCH_IO_KICAD_LEGACY::LoadContent(), SCH_IO_KICAD_LEGACY_LIB_CACHE::loadDocs(), SCH_IO_KICAD_LEGACY_LIB_CACHE::loadDrawEntries(), SCH_IO_KICAD_LEGACY_LIB_CACHE::loadField(), SCH_IO_KICAD_LEGACY::loadFile(), EXCELLON_IMAGE::LoadFile(), SCH_IO_KICAD_LEGACY_LIB_CACHE::loadFootprintFilters(), PCB_IO_KICAD_LEGACY::loadFP_SHAPE(), SCH_IO_KICAD_LEGACY_LIB_CACHE::loadHeader(), SCH_IO_KICAD_LEGACY::loadHeader(), SCH_IO_KICAD_LEGACY::loadJunction(), BITMAP_BASE::LoadLegacyData(), PCB_IO_KICAD_LEGACY::loadMODULE_TEXT(), LP_CACHE::LoadModules(), LEGACY_NETLIST_READER::LoadNetlist(), SCH_IO_KICAD_LEGACY::loadNoConnect(), SCH_IO_KICAD_LEGACY::loadPageSettings(), SCH_IO_KICAD_LEGACY_LIB_CACHE::LoadPart(), SCH_IO_KICAD_LEGACY_LIB_CACHE::loadPin(), SCH_IO_KICAD_LEGACY_LIB_CACHE::loadPolyLine(), SCH_IO_KICAD_LEGACY_LIB_CACHE::loadRect(), SCH_IO_KICAD_LEGACY::loadSymbol(), SCH_IO_KICAD_LEGACY::loadText(), SCH_IO_KICAD_LEGACY_LIB_CACHE::loadText(), PCB_IO_KICAD_LEGACY::loadTrackList(), SCH_IO_KICAD_LEGACY::loadWire(), GPCB_FPL_CACHE::parseParameters(), DSNLEXER::PopReader(), SCH_EDITOR_CONTROL::processCmpToFootprintLinkFile(), MWAVE_POLYGONAL_SHAPE_DLG::ReadDataShapeDescr(), FILTER_READER::ReadLine(), LP_CACHE::SkipIndex(), EXCELLON_IMAGE::TestFileIsExcellon(), and GERBER_FILE_IMAGE::TestFileIsRS274().

LineNumber()

virtual unsigned LINE_READER::LineNumber ( ) const

inlinevirtualinherited

Return the line number of the last line read from this LINE_READER.

Lines start from 1.

Reimplemented in FILTER_READER, and WHITESPACE_FILTER_READER.

Definition at line 147 of file richio.h.

Referenced by PCB_IO_KICAD_LEGACY::biuParse(), SCH_IO_KICAD_LEGACY::checkpoint(), SCH_IO_KICAD_SEXPR_PARSER::checkpoint(), PCB_IO_KICAD_LEGACY::checkpoint(), PCB_IO_KICAD_LEGACY::degParse(), FILTER_READER::LineNumber(), WHITESPACE_FILTER_READER::LineNumber(), CMP_READER::Load(), LEGACY_NETLIST_READER::loadComponent(), SCH_IO_KICAD_LEGACY_LIB_CACHE::loadDocs(), LEGACY_NETLIST_READER::loadFootprintFilters(), PCB_IO_KICAD_LEGACY::loadFP_SHAPE(), LEGACY_NETLIST_READER::loadNet(), PCB_IO_KICAD_LEGACY::loadPAD(), SCH_IO_KICAD_LEGACY_LIB_CACHE::LoadPart(), SCH_IO_KICAD_LEGACY_LIB_CACHE::loadPin(), PCB_IO_KICAD_LEGACY::loadSHEET(), SCH_IO_KICAD_LEGACY::loadSymbol(), and GPCB_FPL_CACHE::parseFOOTPRINT().

operator char *()

LINE_READER::operator char * ( ) const

inlineinherited

A casting operator that returns a char* pointer to the start of the line buffer.

Definition at line 137 of file richio.h.

ReadLine()

char * FILE_LINE_READER::ReadLine ( )

overridevirtual

Read a line of text into the buffer and increments the line number counter.

If the line is larger than the maximum length passed to the constructor, then an exception is thrown. The line is nul terminated.

Returns

The beginning of the read line, or NULL if EOF.

Exceptions

IO_ERROR

when a line is too long.

Implements LINE_READER.

Definition at line 249 of file richio.cpp.

References _, LINE_READER::expandCapacity(), getc_unlocked, LINE_READER::m_capacity, m_fp, LINE_READER::m_length, LINE_READER::m_line, LINE_READER::m_lineNum, LINE_READER::m_maxLineLength, and THROW_IO_ERROR.

Referenced by SCH_IO_KICAD_LEGACY_LIB_CACHE::Load(), PCB_IO_KICAD_LEGACY::LoadBoard(), PCB_IO_KICAD_SEXPR::LoadBoard(), SCH_IO_KICAD_LEGACY_LIB_CACHE::loadDocs(), SCH_IO_KICAD_LEGACY::loadFile(), SCH_IO_KICAD_SEXPR::loadFile(), EXCELLON_IMAGE::LoadFile(), SCH_IO_KICAD_LEGACY_LIB_CACHE::loadHeader(), DRC_ENGINE::loadRules(), SCH_EDITOR_CONTROL::processCmpToFootprintLinkFile(), GERBER_JOBFILE_READER::ReadGerberJobFile(), GERBV::IFACE::SaveFileAs(), EXCELLON_IMAGE::TestFileIsExcellon(), and GERBER_FILE_IMAGE::TestFileIsRS274().

Rewind()

void FILE_LINE_READER::Rewind ( )

inline

Rewind the file and resets the line number back to zero.

Line number will go to 1 on first ReadLine().

Definition at line 234 of file richio.h.

Referenced by PCB_IO_KICAD_LEGACY::LoadBoard(), PCB_IO_KICAD_SEXPR::LoadBoard(), SCH_IO_KICAD_LEGACY::loadFile(), and SCH_IO_KICAD_SEXPR::loadFile().

Member Data Documentation

m_capacity

unsigned LINE_READER::m_capacity

protectedinherited

no. bytes allocated for line.

Definition at line 171 of file richio.h.

Referenced by LINE_READER::expandCapacity(), LINE_READER::LINE_READER(), ReadLine(), STRING_LINE_READER::ReadLine(), and INPUTSTREAM_LINE_READER::ReadLine().

m_fp

FILE* FILE_LINE_READER::m_fp

protected

I may own this file, but might not.

Definition at line 245 of file richio.h.

Referenced by CurPos(), FILE_LINE_READER(), FileLength(), ReadLine(), and ~FILE_LINE_READER().

m_iOwn

bool FILE_LINE_READER::m_iOwn

protected

if I own the file, I'll promise to close it, else not.

Definition at line 244 of file richio.h.

Referenced by ~FILE_LINE_READER().

m_length

unsigned LINE_READER::m_length

protectedinherited

no. bytes in line before trailing nul.

Definition at line 167 of file richio.h.

Referenced by LINE_READER::expandCapacity(), BLOB_READER::ReadLine(), FILTER_READER::ReadLine(), WHITESPACE_FILTER_READER::ReadLine(), ReadLine(), STRING_LINE_READER::ReadLine(), INPUTSTREAM_LINE_READER::ReadLine(), and STDISTREAM_LINE_READER::ReadLine().

m_line

char* LINE_READER::m_line

protectedinherited

the read line of UTF8 text

Definition at line 170 of file richio.h.

Referenced by BLOB_READER::BLOB_READER(), LINE_READER::expandCapacity(), FILTER_READER::FILTER_READER(), LINE_READER::LINE_READER(), BLOB_READER::ReadLine(), FILTER_READER::ReadLine(), WHITESPACE_FILTER_READER::ReadLine(), ReadLine(), STRING_LINE_READER::ReadLine(), INPUTSTREAM_LINE_READER::ReadLine(), STDISTREAM_LINE_READER::ReadLine(), STDISTREAM_LINE_READER::STDISTREAM_LINE_READER(), WHITESPACE_FILTER_READER::WHITESPACE_FILTER_READER(), FILTER_READER::~FILTER_READER(), LINE_READER::~LINE_READER(), STDISTREAM_LINE_READER::~STDISTREAM_LINE_READER(), and WHITESPACE_FILTER_READER::~WHITESPACE_FILTER_READER().

m_lineNum

unsigned LINE_READER::m_lineNum

protectedinherited

Definition at line 168 of file richio.h.

Referenced by BLOB_READER::BLOB_READER(), FILE_LINE_READER(), BLOB_READER::ReadLine(), ReadLine(), STRING_LINE_READER::ReadLine(), INPUTSTREAM_LINE_READER::ReadLine(), STDISTREAM_LINE_READER::ReadLine(), STDISTREAM_LINE_READER::STDISTREAM_LINE_READER(), and STRING_LINE_READER::STRING_LINE_READER().

m_maxLineLength

unsigned LINE_READER::m_maxLineLength

protectedinherited

maximum allowed capacity using resizing.

Definition at line 173 of file richio.h.

Referenced by LINE_READER::expandCapacity(), ReadLine(), STRING_LINE_READER::ReadLine(), and INPUTSTREAM_LINE_READER::ReadLine().

m_source

wxString LINE_READER::m_source

protectedinherited

origin of text lines, e.g. filename or "clipboard"

Definition at line 175 of file richio.h.

Referenced by FILE_LINE_READER(), IFSTREAM_LINE_READER::IFSTREAM_LINE_READER(), INPUTSTREAM_LINE_READER::INPUTSTREAM_LINE_READER(), and STRING_LINE_READER::STRING_LINE_READER().

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

• richio.h
• richio.cpp