stormm::topology::TextFile Class Reference

Structure for translating a text file into a compact, rapidly parsable vector of characters in CPU RAM. The struct contains two nested struct definitions, for a Reader and a Writer. Private objects of these structs can then be accessed with eponymous data() getter functions, returning the appropriate kind of access depending on the const-ness of the TextFile object itself. More...

#include <textfile.h>

Public Member Functions
	~TextFile ()=default
	Default destructor.
std::string	getFileName () const
	Get the name of the original file.
int	getLineCount () const
	Get the line count of a text file after converting it to a character vector in memory.
int	getLineLimits (int index) const
	Get one of the line limits of a text file converted to a character vector in memory.
int	getLineLength (int index) const
	Get the length of a line. A bounds check will be applied to the line index number.
int	getLongestLineLength () const
	Get the length of the longest line in the file.
size_t	getTextSize () const
	Get the number of text characters in the object's buffer (this will not count implicit carriage returns between lines).
char	getChar (int index) const
	Get one character of a text file after converting it to a character vector in memory.
std::string	getLineAsString (int line_index) const
	Get a line from the file as a string.
const char *	getTextPointer (int index) const
	Get a char pointer to a specific index in the object.
const char *	getLinePointer (int line_index) const
	Get a char pointer to a specific line in the object.
const TextFileReader	data () const
	Get an abstract of a text file's CPU-RAM representation, for ease of use.
std::string	extractString (int line_number, int start_pos=0, int string_length=-1) const
	Extract a string based on a line number, starting position, and length.
char4	extractChar4 (int line_number, int start_pos, int string_length) const
	Extract a char4 tuple based on a line number, starting position, and length.
std::string	toString (TextEnds line_endings=TextEnds::NEWLINE) const
	Convert all content to a string, with the option of making line endings carriage returns or simple spaces (fused line endings, which could create combined words out of the last word on one line and the first word on another, are not accepted).
	TextFile ()
	Constructor for taking an ascii file or a very long, formatted string and transforming it into a std::vector of characters with line limits recorded.
	TextFile (const std::string &file_name, TextOrigin source=TextOrigin::DISK, const std::string &content=std::string(""), const std::string &caller=std::string(""))
	TextFile (const char *content, const size_t length, const std::string &caller=std::string(""))
	TextFile (const TextFile &original)=default
	The default copy and move constructors as well as assignment operators are acceptable.
	TextFile (TextFile &&original)=default
TextFile &	operator= (const TextFile &other)=default
TextFile &	operator= (TextFile &&other)=default
void	write (std::ofstream *foutp) const
	Write the contents of the object to disk.
void	write (const std::string &new_filename, PrintSituation expectation=PrintSituation::OPEN_NEW) const
void	write (PrintSituation expectation=PrintSituation::OPEN_NEW) const

Detailed Description

Structure for translating a text file into a compact, rapidly parsable vector of characters in CPU RAM. The struct contains two nested struct definitions, for a Reader and a Writer. Private objects of these structs can then be accessed with eponymous data() getter functions, returning the appropriate kind of access depending on the const-ness of the TextFile object itself.

Constructor & Destructor Documentation

TextFile()

stormm::parse::TextFile::TextFile

(

)

Constructor for taking an ascii file or a very long, formatted string and transforming it into a std::vector of characters with line limits recorded.

Overloaded:

• Construct an empty object after taking no arguments
• Construct a complete object from a named file (throws an exception if the file does not exist)

Parameters

file_name	Name of the input file
source	Origin of the text–disk or RAM
content	Content for the TextFile, and perhaps later an ASCII text file, to hold
caller	(Optional) name of the calling function

Member Function Documentation

extractChar4()

char4 stormm::parse::TextFile::extractChar4	(	int	line_number,
		int	start_pos,
		int	string_length ) const

Extract a char4 tuple based on a line number, starting position, and length.

Parameters

line_number	The line number where the text shall be found
start_pos	Starting position on the line to begin reading (defaults to the start of the line)
string_length	Length of the string to extract. The default value of 4 will try to read four characters, but shorter values will leave blank space at the end of the tuple.

extractString()

std::string stormm::parse::TextFile::extractString	(	int	line_number,
		int	start_pos = 0,
		int	string_length = -1 ) const

Extract a string based on a line number, starting position, and length.

Parameters

line_number	The line number where the text shall be found
start_pos	Starting position on the line to begin reading (defaults to the start of the line)
string_length	Length of the string to extract. A value of -1 indicates that reading shall continue until the end of the line.

getChar()

char stormm::parse::TextFile::getChar

(

int

index

)

const

Get one character of a text file after converting it to a character vector in memory.

Parameters

index

The character index, as ascertained by line limits and some offset

getLineAsString()

std::string stormm::parse::TextFile::getLineAsString

(

int

line_index

)

const

Get a line from the file as a string.

Parameters

line_index

The line of interest, indexing starting from zero

getLineLength()

int stormm::parse::TextFile::getLineLength

(

int

index

)

const

Get the length of a line. A bounds check will be applied to the line index number.

Parameters

index

The line index. The array of limits contains one more indices than the text file has lines, to allow the end of the last line to be determined.

getLineLimits()

int stormm::parse::TextFile::getLineLimits

(

int

index

)

const

Get one of the line limits of a text file converted to a character vector in memory.

Parameters

index

The line index. The array of limits contains one more indices than the text file has lines, to allow the end of the last line to be determined.

getLinePointer()

const char * stormm::parse::TextFile::getLinePointer

(

int

line_index

)

const

Get a char pointer to a specific line in the object.

Parameters

line_index

The line of interest, indexing starting from zero

getTextPointer()

const char * stormm::parse::TextFile::getTextPointer

(

int

index

)

const

Get a char pointer to a specific index in the object.

Parameters

index

The character index, as ascertained by line limits and some offset

toString()

std::string stormm::parse::TextFile::toString

(

TextEnds

line_endings = TextEnds::NEWLINE

)

const

Convert all content to a string, with the option of making line endings carriage returns or simple spaces (fused line endings, which could create combined words out of the last word on one line and the first word on another, are not accepted).

Parameters

line_endings

Specify whether to insert newlines or white space between lines

write()

void stormm::parse::TextFile::write

(

std::ofstream *

foutp

)

const

Write the contents of the object to disk.

Overloaded:

• Supply an open file pointer
• Supply a new file name, distinct from the original name stored in the object, and a file status expectation
• Supply just a file status expectation and (overwrite, or perhaps append in some clever implementation) the original file

Parameters

foutp	Open output stream
new_filename	Name of a distinct file to write
expectation	Expected state of the output file

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

• src/Parsing/textfile.h
• src/Parsing/textfile.cpp