STDISTREAM_LINE_READER Class Reference

LINE_READER that wraps a given std::istream instance. More...

#include <stdstream_line_reader.h>

Inheritance diagram for STDISTREAM_LINE_READER:

Public Member Functions
	STDISTREAM_LINE_READER ()
	~STDISTREAM_LINE_READER ()
char *	ReadLine () override
	Read a line of text into the buffer and increments the line number counter. More...
void	SetStream (std::istream &aStream)
	Set the stream for this line reader. More...
virtual const wxString &	GetSource () const
	Returns the name of the source of the lines in an abstract sense. More...
char *	Line () const
	Return a pointer to the last line that was read in. More...
	operator char * () const
	A casting operator that returns a char* pointer to the start of the line buffer. More...
virtual unsigned	LineNumber () const
	Return the line number of the last line read from this LINE_READER. More...
unsigned	Length () const
	Return the number of bytes in the last line read from this LINE_READER. More...

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. More...

Protected Attributes
unsigned	m_length
	no. bytes in line before trailing nul. More...
unsigned	m_lineNum
char *	m_line
	the read line of UTF8 text More...
unsigned	m_capacity
	no. bytes allocated for line. More...
unsigned	m_maxLineLength
	maximum allowed capacity using resizing. More...
wxString	m_source
	origin of text lines, e.g. filename or "clipboard" More...

Private Attributes
std::string	m_buffer
std::istream *	m_stream

Detailed Description

LINE_READER that wraps a given std::istream instance.

Definition at line 37 of file stdstream_line_reader.h.

Constructor & Destructor Documentation

STDISTREAM_LINE_READER()

STDISTREAM_LINE_READER::STDISTREAM_LINE_READER

(

)

Definition at line 28 of file stdstream_line_reader.cpp.

 :
 LINE_READER( 0 ),
 m_stream( nullptr )
{
 m_line = nullptr;
 m_lineNum = 0;
}

References LINE_READER::m_line, and LINE_READER::m_lineNum.

~STDISTREAM_LINE_READER()

STDISTREAM_LINE_READER::~STDISTREAM_LINE_READER

(

)

Definition at line 37 of file stdstream_line_reader.cpp.

{
 // this is only a view into a string, it can't be deleted by the base
 m_line = nullptr;
}

References LINE_READER::m_line.

Member Function Documentation

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 135 of file richio.cpp.

{
 // m_length can equal maxLineLength and nothing breaks, there's room for
 // the terminating nul. cannot go over this.
 if( aNewsize > m_maxLineLength+1 )
 aNewsize = m_maxLineLength+1;
 
 if( aNewsize > m_capacity )
 {
 m_capacity = aNewsize;
 
 // resize the buffer, and copy the original data
 // Be sure there is room for the null EOL char, so reserve capacity+1 bytes
 // to ensure capacity line length. Use capacity+5 to cover and corner case
 char* bigger = new char[m_capacity+5];
 
 wxASSERT( m_capacity >= m_length+1 );
 
 memcpy( bigger, m_line, m_length );
 bigger[m_length] = 0;
 
 delete[] m_line;
 m_line = bigger;
 }
}

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

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

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 109 of file richio.h.

 {
 return m_source;
 }

References LINE_READER::m_source.

Referenced by LEGACY_PLUGIN::biuParse(), LEGACY_PLUGIN::checkVersion(), DSNLEXER::CurSource(), LEGACY_PLUGIN::degParse(), WRLPROC::GetFileName(), FILTER_READER::GetSource(), WHITESPACE_FILTER_READER::GetSource(), CMP_READER::Load(), LEGACY_NETLIST_READER::loadComponent(), LEGACY_NETLIST_READER::loadFootprintFilters(), LEGACY_NETLIST_READER::loadNet(), SCH_LEGACY_PLUGIN_CACHE::LoadPart(), SCH_LEGACY_PLUGIN_CACHE::loadPin(), LEGACY_PLUGIN::loadSETUP(), SCH_LEGACY_PLUGIN::loadSymbol(), GPCB_FPL_CACHE::parseFOOTPRINT(), KICAD_NETLIST_PARSER::parseNet(), 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 143 of file richio.h.

 {
 return m_length;
 }

References LINE_READER::m_length.

Referenced by LEGACY_NETLIST_READER::loadComponent(), LEGACY_NETLIST_READER::loadFootprintFilters(), LEGACY_NETLIST_READER::loadNet(), KICAD_NETLIST_PARSER::parseNet(), DSNLEXER::readLine(), 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 117 of file richio.h.

 {
 return m_line;
 }

References LINE_READER::m_line.

Referenced by bench_string_lr(), bench_string_lr_reuse(), bench_wxbis(), bench_wxbis_reuse(), bench_wxis(), bench_wxis_reuse(), LEGACY_PLUGIN::biuParse(), LEGACY_PLUGIN::checkVersion(), LEGACY_PLUGIN::degParse(), detect_file_type(), NETLIST_READER::GuessNetlistFileType(), SCH_LEGACY_PLUGIN_CACHE::Load(), CMP_READER::Load(), SCH_LEGACY_PLUGIN_CACHE::loadAliases(), SCH_LEGACY_PLUGIN_CACHE::loadArc(), SCH_LEGACY_PLUGIN_CACHE::loadBezier(), SCH_LEGACY_PLUGIN::loadBitmap(), SCH_LEGACY_PLUGIN::loadBusAlias(), SCH_LEGACY_PLUGIN::loadBusEntry(), SCH_LEGACY_PLUGIN_CACHE::loadCircle(), SCH_LEGACY_PLUGIN::LoadContent(), BITMAP_BASE::LoadData(), SCH_LEGACY_PLUGIN_CACHE::loadDocs(), SCH_LEGACY_PLUGIN_CACHE::loadDrawEntries(), SCH_LEGACY_PLUGIN_CACHE::loadField(), SCH_LEGACY_PLUGIN::loadFile(), EXCELLON_IMAGE::LoadFile(), SCH_LEGACY_PLUGIN_CACHE::loadFootprintFilters(), LEGACY_PLUGIN::loadFP_SHAPE(), SCH_LEGACY_PLUGIN_CACHE::loadHeader(), SCH_LEGACY_PLUGIN::loadHeader(), SCH_LEGACY_PLUGIN::loadJunction(), LEGACY_PLUGIN::loadMODULE_TEXT(), LP_CACHE::LoadModules(), LEGACY_NETLIST_READER::LoadNetlist(), SCH_LEGACY_PLUGIN::loadNoConnect(), SCH_LEGACY_PLUGIN::loadPageSettings(), SCH_LEGACY_PLUGIN_CACHE::LoadPart(), SCH_LEGACY_PLUGIN_CACHE::loadPin(), SCH_LEGACY_PLUGIN_CACHE::loadPolyLine(), SCH_LEGACY_PLUGIN_CACHE::loadRect(), SCH_LEGACY_PLUGIN::loadSymbol(), SCH_LEGACY_PLUGIN::loadText(), SCH_LEGACY_PLUGIN_CACHE::loadText(), LEGACY_PLUGIN::loadTrackList(), SCH_LEGACY_PLUGIN::loadWire(), LINE_READER::operator char *(), KICAD_NETLIST_PARSER::parseNet(), GPCB_FPL_CACHE::parseParameters(), DSNLEXER::PopReader(), SCH_EDITOR_CONTROL::processCmpToFootprintLinkFile(), MWAVE_POLYGONAL_SHAPE_DLG::ReadDataShapeDescr(), DSNLEXER::readLine(), 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 135 of file richio.h.

 {
 return m_lineNum;
 }

References LINE_READER::m_lineNum.

Referenced by LEGACY_PLUGIN::biuParse(), SCH_SEXPR_PARSER::checkpoint(), SCH_LEGACY_PLUGIN::checkpoint(), LEGACY_PLUGIN::checkpoint(), DSNLEXER::CurLineNumber(), LEGACY_PLUGIN::degParse(), FILTER_READER::LineNumber(), WHITESPACE_FILTER_READER::LineNumber(), CMP_READER::Load(), LEGACY_NETLIST_READER::loadComponent(), SCH_LEGACY_PLUGIN_CACHE::loadDocs(), LEGACY_NETLIST_READER::loadFootprintFilters(), LEGACY_PLUGIN::loadFP_SHAPE(), LEGACY_NETLIST_READER::loadNet(), LEGACY_PLUGIN::loadPAD(), SCH_LEGACY_PLUGIN_CACHE::LoadPart(), SCH_LEGACY_PLUGIN_CACHE::loadPin(), LEGACY_PLUGIN::loadSHEET(), SCH_LEGACY_PLUGIN::loadSymbol(), GPCB_FPL_CACHE::parseFOOTPRINT(), and KICAD_NETLIST_PARSER::parseNet().

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 125 of file richio.h.

 {
 return Line();
 }

References LINE_READER::Line().

ReadLine()

char * STDISTREAM_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 44 of file stdstream_line_reader.cpp.

{
 getline( *m_stream, m_buffer );
 
 m_buffer.append( 1, '\n' );
 
 m_length = m_buffer.size();
 m_line = (char*) m_buffer.data(); //ew why no const??
 
 // lineNum is incremented even if there was no line read, because this
 // leads to better error reporting when we hit an end of file.
 ++m_lineNum;
 
 return m_stream->eof() ? nullptr : m_line;
}

References m_buffer, LINE_READER::m_length, LINE_READER::m_line, LINE_READER::m_lineNum, and m_stream.

SetStream()

void STDISTREAM_LINE_READER::SetStream

(

std::istream &

aStream

)

Set the stream for this line reader.

Parameters

aStream

a stream to read

Definition at line 61 of file stdstream_line_reader.cpp.

{
 // Could be done with a virtual getStream function, but the
 // virtual function call is a noticeable (but minor) penalty within
 // ReadLine() in tight loops
 m_stream = &aStream;
}

References m_stream.

Referenced by IFSTREAM_LINE_READER::IFSTREAM_LINE_READER(), parse(), and KI_TEST::ReadBoardItemFromStream().

Member Data Documentation

m_buffer

std::string STDISTREAM_LINE_READER::m_buffer

private

Definition at line 53 of file stdstream_line_reader.h.

Referenced by ReadLine().

m_capacity

unsigned LINE_READER::m_capacity

protectedinherited

no. bytes allocated for line.

Definition at line 159 of file richio.h.

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

m_length

unsigned LINE_READER::m_length

protectedinherited

no. bytes in line before trailing nul.

Definition at line 155 of file richio.h.

Referenced by LINE_READER::expandCapacity(), LINE_READER::Length(), FILTER_READER::ReadLine(), WHITESPACE_FILTER_READER::ReadLine(), FILE_LINE_READER::ReadLine(), STRING_LINE_READER::ReadLine(), INPUTSTREAM_LINE_READER::ReadLine(), and ReadLine().

m_line

char* LINE_READER::m_line

protectedinherited

the read line of UTF8 text

Definition at line 158 of file richio.h.

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

m_lineNum

unsigned LINE_READER::m_lineNum

protectedinherited

Definition at line 156 of file richio.h.

Referenced by FILE_LINE_READER::FILE_LINE_READER(), LINE_READER::LineNumber(), FILE_LINE_READER::ReadLine(), STRING_LINE_READER::ReadLine(), INPUTSTREAM_LINE_READER::ReadLine(), ReadLine(), FILE_LINE_READER::Rewind(), 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 161 of file richio.h.

Referenced by LINE_READER::expandCapacity(), FILE_LINE_READER::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 163 of file richio.h.

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

m_stream

std::istream* STDISTREAM_LINE_READER::m_stream

private

Definition at line 54 of file stdstream_line_reader.h.

Referenced by ReadLine(), and SetStream().

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

• stdstream_line_reader.h
• stdstream_line_reader.cpp