Input from file stream as an ISstream, normally using std::ifstream for the actual input. More...

#include <IFstream.H>

Inheritance diagram for IFstream:

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Collaboration diagram for IFstream:

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Public Member Functions
	ClassName ("IFstream")
	Declare type-name (with debug switch).
	IFstream (const fileName &pathname, IOstreamOption streamOpt=IOstreamOption())
	Construct from pathname, default or specified stream options.
	IFstream (const fileName &pathname, IOstreamOption::streamFormat fmt)
	Construct from pathname and format.
	~IFstream ()=default
	Destructor.
std::streamsize	fileSize () const
	Return the size of the underlying file (-1 on error). This corresponds to Foam::fileSize() but with extra handling of compressed files.
virtual std::istream &	stdStream () override
	Access to underlying std::istream.
virtual const std::istream &	stdStream () const override
	Const access to underlying std::istream.
virtual void	rewind () override
	Rewind the stream so that it may be read again.
virtual void	print (Ostream &os) const override
	Print stream description.
IFstream &	operator() () const
	Return a non-const reference to const IFstream.
ISstream &	get (char &c)
	Get character(s).
virtual const fileName &	name () const override
	Read/write access to the name of the stream.
virtual fileName &	name ()
	Read/write access to the name of the stream.
Public Member Functions inherited from ISstream
	ISstream (std::istream &is, const string &streamName, IOstreamOption streamOpt=IOstreamOption())
	Construct wrapper around std::istream, set stream status.
	ISstream (std::istream &is, const string &streamName, IOstreamOption::streamFormat fmt, IOstreamOption::compressionType cmp=IOstreamOption::UNCOMPRESSED)
	Construct wrapper around std::istream, set stream status.
	ISstream (std::istream &is, const string &streamName, IOstreamOption::streamFormat fmt, IOstreamOption::versionNumber ver, IOstreamOption::compressionType cmp=IOstreamOption::UNCOMPRESSED)
	Construct wrapper around std::istream, set stream status.
virtual	~ISstream ()=default
	Destructor.
virtual std::ios_base::fmtflags	flags () const override
	Return current stream flags.
virtual std::ios_base::fmtflags	flags (std::ios_base::fmtflags f) override
	Set stream flags, return old stream flags.
void	syncState ()
	Set stream state to match that of the std::istream.
*return False if stream exhausted before finding the comment end bool	seekCommentEnd_Cstyle ()
	Discard until end of C-style comment '.
bool	continueReadUntilRightBrace (std::string &str, const bool stripComments=true)
	Raw, low-level get into a string. Continues reading after an initial left-brace until it finds the matching closing right-brace.
ISstream &	get (char &c)
	Raw, low-level get character function.
int	peek ()
	Raw, low-level peek function.
ISstream &	getLine (std::string &str, char delim='\n')
	Raw, low-level getline (until delimiter) into a string.
std::streamsize	getLine (std::nullptr_t, char delim='\n')
	Low-level discard until delimiter.
ISstream &	putback (const char c)
	Raw, low-level putback character function.
virtual Istream &	read (token &t) override
	Return next token from stream.
virtual Istream &	read (char &c) override
	Read a character.
virtual Istream &	read (word &str) override
	Read a word.
virtual Istream &	read (string &str) override
	Read a string (including enclosing double-quotes).
virtual Istream &	read (int32_t &val) override
	Read int32_t.
virtual Istream &	read (int64_t &val) override
	Read int64_t.
virtual Istream &	read (uint32_t &val) override
	Read uint32_t.
virtual Istream &	read (uint64_t &val) override
	Read uint64_t.
virtual Istream &	read (float &val) override
	Read a float.
virtual Istream &	read (double &val) override
	Read a double.
virtual Istream &	read (char *data, std::streamsize count) override
	Read binary block (with any possible block delimiters). Reading into a null pointer behaves like a forward seek of count characters.
virtual Istream &	readRaw (char *data, std::streamsize count) override
	Low-level raw binary read (without possible block delimiters). Reading into a null pointer behaves like a forward seek of count characters.
virtual bool	beginRawRead () override
	Start of low-level raw binary read.
virtual bool	endRawRead () override
	End of low-level raw binary read.
Public Member Functions inherited from Istream
	Istream (const Istream &)=default
	Copy construct.
virtual	~Istream ()=default
	Destructor.
	Istream (IOstreamOption streamOpt=IOstreamOption())
	Default construct (ASCII, uncompressed), construct with specified stream option.
	Istream (IOstreamOption::streamFormat fmt, IOstreamOption::compressionType cmp=IOstreamOption::UNCOMPRESSED)
	Construct with format (uncompressed).
const token &	peekBack () const noexcept
	Examine putback token without removing it.
void	putBackClear ()
	Drop the putback token.
void	putBack (const token &tok)
	Put back a token (copy). Only a single put back is permitted.
void	putBack (token &&tok)
	Put back a token (move). Only a single put back is permitted.
bool	getBack (token &tok)
	Retrieve the put-back token if there is one.
bool	readBegin (const char *funcName)
	Begin read of data chunk, starts with '('.
bool	readEnd (const char *funcName)
	End read of data chunk, ends with ')'.
char	readBeginList (const char *funcName)
	Begin read of list data, starts with '(' or '{'.
char	readEndList (const char *funcName)
	End read of list data, ends with ')' or '}'.
Istream &	operator() () const
	Return a non-const reference to const Istream.
Public Member Functions inherited from IOstream
	IOstream (const IOstream &)=default
	Copy construct.
virtual	~IOstream ()=default
	Destructor.
	IOstream (IOstreamOption streamOpt=IOstreamOption())
	Default construct (ASCII, uncompressed), construct with specified stream option.
	IOstream (IOstreamOption::streamFormat fmt, IOstreamOption::versionNumber ver, IOstreamOption::compressionType cmp=IOstreamOption::UNCOMPRESSED)
	Construct with format, version (compression).
fileName	relativeName () const
	Return the name of the stream relative to the current case.
virtual bool	check (const char *operation) const
	Check IOstream status for given operation.
bool	fatalCheck (const char *operation) const
	Check IOstream status for given operation.
bool	opened () const noexcept
	True if stream has been opened.
bool	closed () const noexcept
	True if stream is closed.
bool	good () const noexcept
	True if next operation might succeed.
bool	eof () const noexcept
	True if end of input seen.
bool	fail () const noexcept
	True if next operation will fail.
bool	bad () const noexcept
	True if stream is corrupted.
	operator bool () const noexcept
	True if the stream has not failed.
bool	operator! () const noexcept
	True if the stream has failed.
unsigned	labelByteSize () const noexcept
	The sizeof (label) in bytes associated with the stream.
unsigned	scalarByteSize () const noexcept
	The sizeof (scalar) in bytes associated with the stream.
void	setLabelByteSize (unsigned nbytes) noexcept
	Set the sizeof (label) in bytes associated with the stream.
void	setScalarByteSize (unsigned nbytes) noexcept
	Set the sizeof (scalar) in bytes associated with the stream.
template<class T, class = std::enable_if_t<std::is_integral_v<T>>>
bool	checkLabelSize () const noexcept
	Test if the label byte-size associated with the stream is the same as the given type.
template<class T, class = std::enable_if_t<std::is_floating_point_v<T>>>
bool	checkScalarSize () const noexcept
	Test if the scalar byte-size associated with the stream is the same as the given type.
bool	checkNativeSizes () const noexcept
	Test if the label/scalar byte-size associated with the stream are the native label/scalar sizes.
bool	fatalCheckNativeSizes (const char *operation) const
	Assert that the label/scalar byte-size associated with the stream are the native label/scalar sizes.
label	lineNumber () const noexcept
	Const access to the current stream line number.
label &	lineNumber () noexcept
	Non-const access to the current stream line number.
label	lineNumber (const label num) noexcept
	Set the stream line number.
void	setEof () noexcept
	Set stream state as reached 'eof'.
void	setFail () noexcept
	Set stream state as 'failed'.
void	setBad () noexcept
	Set stream state to be 'bad'.
std::ios_base::fmtflags	setf (std::ios_base::fmtflags f)
	Set stream flag(s), return old stream flags.
std::ios_base::fmtflags	setf (const std::ios_base::fmtflags f, const std::ios_base::fmtflags mask)
	Set stream flag(s) with mask, return old stream flags.
std::ios_base::fmtflags	unsetf (std::ios_base::fmtflags f)
	Unset stream flags, return old stream flags.
void	print (Ostream &os, const int streamState) const
	Print information about the stream state bits.
InfoProxy< IOstream >	info () const noexcept
	Return info proxy, used to print IOstream information to a stream.
Public Member Functions inherited from IOstreamOption
constexpr	IOstreamOption (streamFormat fmt=streamFormat::ASCII, compressionType comp=compressionType::UNCOMPRESSED) noexcept
	Default construct (ASCII, UNCOMPRESSED, currentVersion) or construct with format, compression.
constexpr	IOstreamOption (streamFormat fmt, compressionType comp, versionNumber ver) noexcept
	Construct from components (format, compression, version).
constexpr	IOstreamOption (streamFormat fmt, versionNumber ver, compressionType comp=compressionType::UNCOMPRESSED) noexcept
	Construct from components (format, version, compression).
	IOstreamOption (const IOstreamOption &opt, streamFormat fmt) noexcept
	Copy construct with change of format.
streamFormat	format () const noexcept
	Get the current stream format.
streamFormat	format (const streamFormat fmt) noexcept
	Set the stream format.
streamFormat	format (const word &formatName)
	Set the stream format from string value.
compressionType	compression () const noexcept
	Get the stream compression.
compressionType	compression (const compressionType comp) noexcept
	Set the stream compression.
compressionType	compression (const word &compName)
	Set the stream compression from string value.
versionNumber	version () const noexcept
	Get the stream version.
versionNumber	version (const versionNumber ver) noexcept
	Set the stream version.
versionNumber	version (const token &tok)
	Set the stream version from token.

Static Public Member Functions
static DynamicList< char >	readContents (const fileName &pathname)
	Get file contents from specified file (compressed/uncompressed). Returns an empty list if the file cannot be opened.
static DynamicList< char >	readContents (IFstream &ifs)
	Get file contents from IFstream (assumed to be rewound).
Static Public Member Functions inherited from IOstream
static unsigned int	defaultPrecision () noexcept
	Return the default precision.
static unsigned int	defaultPrecision (unsigned int prec) noexcept
	Reset the default precision.
static unsigned int	minPrecision (unsigned int prec) noexcept
	Set the minimum default precision.
Static Public Member Functions inherited from IOstreamOption
static floatFormat	floatFormatEnum (const word &fmtName, const floatFormat deflt=floatFormat::general)
	Lookup floatFormat enum corresponding to the string (general \| fixed \| scientific).
static floatFormat	floatFormatEnum (const word &key, const dictionary &dict, const floatFormat deflt=floatFormat::general)
	getOrDefault floatFormat from dictionary, warn only on bad enumeration.
static streamFormat	formatEnum (const word &fmtName, const streamFormat deflt=streamFormat::ASCII)
	Lookup streamFormat enum corresponding to the string (ascii \| binary).
static streamFormat	formatEnum (const word &key, const dictionary &dict, const streamFormat deflt=streamFormat::ASCII)
	getOrDefault streamFormat from dictionary, warn only on bad enumeration.
static compressionType	compressionEnum (const word &compName, const compressionType deflt=compressionType::UNCOMPRESSED)
	The compression enum corresponding to the string.
static compressionType	compressionEnum (const word &key, const dictionary &dict, const compressionType deflt=compressionType::UNCOMPRESSED)
	getOrDefault compressionType from dictionary, warn only on bad enumeration.

Additional Inherited Members
Public Types inherited from IOstream
enum	streamAccess : char { CLOSED = 0 , OPENED }
	Enumeration for stream open/closed state. More...
Public Types inherited from IOstreamOption
enum	streamFormat : char { ASCII = 0 , BINARY , COHERENT , UNKNOWN_FORMAT }
	Data format (ascii \| binary \| coherent). More...
enum	compressionType : char { UNCOMPRESSED = 0 , COMPRESSED }
	Compression treatment (UNCOMPRESSED \| COMPRESSED). More...
enum	appendType : char { NO_APPEND = 0 , APPEND_APP , APPEND_ATE , NON_APPEND = NO_APPEND , APPEND = APPEND_APP }
	File appending (NO_APPEND \| APPEND_APP \| APPEND_ATE). More...
enum	atomicType : char { NON_ATOMIC = 0 , ATOMIC }
	Atomic operations (output). More...
enum class	floatFormat : unsigned { general = unsigned(0) , fixed = unsigned(std::ios_base::fixed) , scientific = unsigned(std::ios_base::scientific) }
	Float formats (eg, time directory name formats). More...
Static Public Attributes inherited from IOstream
static unsigned int	precision_
	Default precision.
Static Public Attributes inherited from IOstreamOption
static const Enum< floatFormat >	floatFormatNames
	Names for float formats (general, fixed, scientific).
static const Enum< streamFormat >	formatNames
	Stream format names (ascii, binary).
static const versionNumber	currentVersion
	The current version number (2.0).
Protected Member Functions inherited from Istream
bool	hasPutback () const noexcept
	True if putback token is in use.
Protected Member Functions inherited from IOstream
void	setOpened () noexcept
	Set stream opened.
void	setClosed () noexcept
	Set stream closed.
void	setState (std::ios_base::iostate state) noexcept
	Set stream state.
void	setGood () noexcept
	Set stream state to be good.
Protected Attributes inherited from IOstream
std::ios_base::iostate	ioState_
	Mirror of internal stream io state.
streamAccess	openClosed_
	The stream open/closed state.
unsigned char	sizeofLabel_
	The sizeof (label), possibly read from the header.
unsigned char	sizeofScalar_
	The sizeof (scalar), possibly read from the header.
label	lineNumber_
	The file line.
Static Protected Attributes inherited from IOstream
static fileName	staticName_
	Name for any generic stream - normally treat as readonly.