io.c File Reference

Various file I/O functions. More...

#include <GKlib.h>

Functions
FILE *	gk_fopen (char *fname, char *mode, const char *msg)
void	gk_fclose (FILE *fp)
gk_idx_t	gk_getline (char **lineptr, size_t *n, FILE *stream)
char **	gk_readfile (char *fname, gk_idx_t *r_nlines)
int32_t *	gk_i32readfile (char *fname, gk_idx_t *r_nlines)
int64_t *	gk_i64readfile (char *fname, gk_idx_t *r_nlines)
int32_t *	gk_i32readfilebin (char *fname, ssize_t *r_nelmnts)
int64_t *	gk_i64readfilebin (char *fname, ssize_t *r_nelmnts)
float *	gk_freadfilebin (char *fname, ssize_t *r_nelmnts)
size_t	gk_fwritefilebin (char *fname, size_t n, float *a)
double *	gk_dreadfilebin (char *fname, ssize_t *r_nelmnts)

Detailed Description

Various file I/O functions.

This file contains various functions that perform I/O.

Date

Started 4/10/95

Author

George

Version

$Id: io.c 12591 2012-09-01 19:03:15Z karypis $ 

Function Documentation

gk_dreadfilebin()

double* gk_dreadfilebin	(	char *	fname,
		ssize_t *	r_nelmnts
	)

This function reads the contents of a binary file and returns it in the form of an array of double.

Parameters

fname	is the name of the file
r_nlines	is the number of lines in the file. If it is NULL, this information is not returned.

gk_freadfilebin()

float* gk_freadfilebin	(	char *	fname,
		ssize_t *	r_nelmnts
	)

This function reads the contents of a binary file and returns it in the form of an array of float.

Parameters

fname	is the name of the file
r_nlines	is the number of lines in the file. If it is NULL, this information is not returned.

gk_fwritefilebin()

size_t gk_fwritefilebin	(	char *	fname,
		size_t	n,
		float *	a
	)

This function writes the contents of an array into a binary file.

Parameters

fname	is the name of the file
n	the number of elements in the array.
a	the array to be written out.

gk_getline()

gk_idx_t gk_getline	(	char **	lineptr,
		size_t *	n,
		FILE *	stream
	)

This function is the GKlib implementation of glibc's getline() function.

Returns

-1 if the EOF has been reached, otherwise it returns the number of bytes read.

gk_i32readfile()

int32_t* gk_i32readfile	(	char *	fname,
		gk_idx_t *	r_nlines
	)

This function reads the contents of a file and returns it in the form of an array of int32_t.

Parameters

fname	is the name of the file
r_nlines	is the number of lines in the file. If it is NULL, this information is not returned.

gk_i32readfilebin()

int32_t* gk_i32readfilebin	(	char *	fname,
		ssize_t *	r_nelmnts
	)

This function reads the contents of a binary file and returns it in the form of an array of int32_t.

Parameters

fname	is the name of the file
r_nlines	is the number of lines in the file. If it is NULL, this information is not returned.

gk_i64readfile()

int64_t* gk_i64readfile	(	char *	fname,
		gk_idx_t *	r_nlines
	)

This function reads the contents of a file and returns it in the form of an array of int64_t.

Parameters

fname	is the name of the file
r_nlines	is the number of lines in the file. If it is NULL, this information is not returned.

gk_i64readfilebin()

int64_t* gk_i64readfilebin	(	char *	fname,
		ssize_t *	r_nelmnts
	)

This function reads the contents of a binary file and returns it in the form of an array of int64_t.

Parameters

fname	is the name of the file
r_nlines	is the number of lines in the file. If it is NULL, this information is not returned.

gk_readfile()

char** gk_readfile	(	char *	fname,
		gk_idx_t *	r_nlines
	)

This function reads the contents of a text file and returns it in the form of an array of strings.

Parameters

fname	is the name of the file
r_nlines	is the number of lines in the file. If it is NULL, this information is not returned.