libsent/src/util/gzfile.c File Reference

Read Compressed files using gzip or zlib. More...

#include <sent/stddefs.h>
#include <errno.h>
#include <zlib.h>

Go to the source code of this file.

Functions
FILE *	fopen_readfile (char *filename)
	Open a file with zlib.
int	fclose_readfile (FILE *fp)
	Close a file previously opened by fopen_readfile().
size_t	myfread (void *ptr, size_t size, size_t n, FILE *fp)
	Read data from input stream opened by fopen_readfile().
int	myfgetc (FILE *fp)
	Read one character from input stream opened by fopen_readfile().
int	myfeof (FILE *fp)
	Test if reached end of file, for files opened by fopen_readfile().
int	myfrewind (FILE *fp)
	Seek to the first of the file.
FILE *	fopen_writefile (char *filename)
	Open or create a file for writing (no compression supported),.
int	fclose_writefile (FILE *fp)
	Close file previously opened by open_writefile().
size_t	myfwrite (void *ptr, size_t size, size_t n, FILE *fp)
	Write data.

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Detailed Description

Read Compressed files using gzip or zlib.

These are functions to enable open/close/reading of gzipped files.

If zlib library and header are not found, the gzip executables will be used to uncompress the input file. In the latter case, opening multiple files with these functions is not allowed.

Author:

Akinobu LEE

Date:

Thu Feb 17 15:46:00 2005

Revision

1.2

Definition in file gzfile.c.

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Function Documentation

FILE* fopen_readfile

(

char *

filename

)

Open a file with zlib.

Parameters:

filename

[in] file name to open

Returns:

gzFile pointer if succeed, NULL on failure.

Definition at line 55 of file gzfile.c.

Referenced by CMN_load_from_file(), init_dfa(), init_hmminfo(), init_ngram_arpa(), init_ngram_arpa_additional(), init_ngram_bin(), init_voca(), init_wordlist(), new_SS_load_from_file(), and rdparam().

int fclose_readfile

(

FILE *

fp

)

Close a file previously opened by fopen_readfile().

Parameters:

fp

[in] gzFile pointer

Returns:

0 on success, -1 on error.

Definition at line 73 of file gzfile.c.

Referenced by CMN_load_from_file(), init_dfa(), init_hmminfo(), init_ngram_arpa(), init_ngram_arpa_additional(), init_ngram_bin(), init_voca(), init_wordlist(), new_SS_load_from_file(), and rdparam().

size_t myfread	(	void *	ptr,
		size_t	size,
		size_t	n,
		FILE *	fp
	)

Read data from input stream opened by fopen_readfile().

Parameters:

	ptr	[out] data buffer
	size	[in] size of unit in bytes
	n	[in] number of unit to be read
	fp	[in] gzFile pointer

Returns:

number of read units or EOF, -1 on error.

Definition at line 93 of file gzfile.c.

Referenced by adin_stdin_read(), aptree_read(), init_hmminfo(), myread(), and rdnfunc().

int myfgetc

(

FILE *

fp

)

Read one character from input stream opened by fopen_readfile().

Parameters:

fp

[in] gzFile pointer

Returns:

the read character, or -1 on EOF or error.

Definition at line 112 of file gzfile.c.

Referenced by rdn_strfunc().

int myfeof

(

FILE *

fp

)

Test if reached end of file, for files opened by fopen_readfile().

Parameters:

fp

[in] gzFile pointer.

Returns:

1 if already on EOF, 0 if otherwise.

Definition at line 127 of file gzfile.c.

int myfrewind

(

FILE *

fp

)

Seek to the first of the file.

Parameters:

fp

[in] gzFile pointer.

Returns:

0 on success, -1 on error.

Definition at line 143 of file gzfile.c.

Referenced by init_hmminfo().

FILE* fopen_writefile

(

char *

filename

)

Open or create a file for writing (no compression supported),.

Parameters:

filename

[in] filename

Returns:

the file pointer or NULL on failure.

Definition at line 336 of file gzfile.c.

Referenced by wrwav_open().

int fclose_writefile

(

FILE *

fp

)

Close file previously opened by open_writefile().

Parameters:

fp

[in] file pointer

Returns:

0 on success, -1 on failure.

Definition at line 355 of file gzfile.c.

Referenced by wrwav_close().

size_t myfwrite	(	void *	ptr,
		size_t	size,
		size_t	n,
		FILE *	fp
	)

Write data.

Parameters:

	ptr	[in] data buffer
	size	[in] size of unit in bytes
	n	[in] number of unit to write
	fp	[in] file pointer

Returns:

the number of units successfully written, or 0 if EOF or failed.

Definition at line 374 of file gzfile.c.

Referenced by aptree_write(), mywrite(), save_hmmlist_bin(), and wrtfunc().

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