ioapi.c File Reference

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "zlib.h"
#include "ioapi.h"

Go to the source code of this file.

Macros
#define	SEEK_CUR   1
#define	SEEK_END   2
#define	SEEK_SET   0

Functions
voidpf ZCALLBACK fopen_file_func	OF ((voidpf opaque, const char *filename, int mode))
uLong ZCALLBACK fread_file_func	OF ((voidpf opaque, voidpf stream, void *buf, uLong size))
uLong ZCALLBACK fwrite_file_func	OF ((voidpf opaque, voidpf stream, const void *buf, uLong size))
long ZCALLBACK ftell_file_func	OF ((voidpf opaque, voidpf stream))
long ZCALLBACK fseek_file_func	OF ((voidpf opaque, voidpf stream, uLong offset, int origin))
voidpf ZCALLBACK	fopen_file_func (voidpf opaque, const char *filename, int mode)
uLong ZCALLBACK	fread_file_func (voidpf opaque, voidpf stream, void *buf, uLong size)
uLong ZCALLBACK	fwrite_file_func (voidpf opaque, voidpf stream, const void *buf, uLong size)
long ZCALLBACK	ftell_file_func (voidpf opaque, voidpf stream)
long ZCALLBACK	fseek_file_func (voidpf opaque, voidpf stream, uLong offset, int origin)
int ZCALLBACK	fclose_file_func (voidpf opaque, voidpf stream)
int ZCALLBACK	ferror_file_func (voidpf opaque, voidpf stream)
void	fill_fopen_filefunc (zlib_filefunc_def *pzlib_filefunc_def)

Macro Definition Documentation

SEEK_CUR

#define SEEK_CUR   1

Definition at line 21 of file ioapi.c.

SEEK_END

#define SEEK_END   2

Definition at line 25 of file ioapi.c.

SEEK_SET

#define SEEK_SET   0

Definition at line 29 of file ioapi.c.

Function Documentation

fclose_file_func()

int ZCALLBACK fclose_file_func	(	voidpf	opaque,
		voidpf	stream
	)

Definition at line 148 of file ioapi.c.

{
    int ret;
    ret = fclose((FILE *)stream);
    return ret;
}

ferror_file_func()

int ZCALLBACK ferror_file_func	(	voidpf	opaque,
		voidpf	stream
	)

Definition at line 157 of file ioapi.c.

{
    int ret;
    ret = ferror((FILE *)stream);
    return ret;
}

fill_fopen_filefunc()

void fill_fopen_filefunc

(

zlib_filefunc_def*

pzlib_filefunc_def

)

Definition at line 166 of file ioapi.c.

{
    pzlib_filefunc_def->zopen_file = fopen_file_func;
    pzlib_filefunc_def->zread_file = fread_file_func;
    pzlib_filefunc_def->zwrite_file = fwrite_file_func;
    pzlib_filefunc_def->ztell_file = ftell_file_func;
    pzlib_filefunc_def->zseek_file = fseek_file_func;
    pzlib_filefunc_def->zclose_file = fclose_file_func;
    pzlib_filefunc_def->zerror_file = ferror_file_func;
    pzlib_filefunc_def->opaque = NULL;
}

fopen_file_func()

voidpf ZCALLBACK fopen_file_func	(	voidpf	opaque,
		const char*	filename,
		int	mode
	)

Definition at line 68 of file ioapi.c.

{
    FILE* file = NULL;
    const char* mode_fopen = NULL;
    if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ)
        mode_fopen = "rb";
    else
    if (mode & ZLIB_FILEFUNC_MODE_EXISTING)
        mode_fopen = "r+b";
    else
    if (mode & ZLIB_FILEFUNC_MODE_CREATE)
        mode_fopen = "wb";

    if ((filename!=NULL) && (mode_fopen != NULL))
        file = fopen(filename, mode_fopen);
    return file;
}

fread_file_func()

uLong ZCALLBACK fread_file_func	(	voidpf	opaque,
		voidpf	stream,
		void*	buf,
		uLong	size
	)

Definition at line 90 of file ioapi.c.

{
    uLong ret;
    ret = (uLong)fread(buf, 1, (size_t)size, (FILE *)stream);
    return ret;
}

fseek_file_func()

long ZCALLBACK fseek_file_func	(	voidpf	opaque,
		voidpf	stream,
		uLong	offset,
		int	origin
	)

Definition at line 122 of file ioapi.c.

{
    int fseek_origin=0;
    long ret;
    switch (origin)
    {
    case ZLIB_FILEFUNC_SEEK_CUR :
        fseek_origin = SEEK_CUR;
        break;
    case ZLIB_FILEFUNC_SEEK_END :
        fseek_origin = SEEK_END;
        break;
    case ZLIB_FILEFUNC_SEEK_SET :
        fseek_origin = SEEK_SET;
        break;
    default: return -1;
    }
    ret = 0;
    fseek((FILE *)stream, offset, fseek_origin);
    return ret;
}

ftell_file_func()

long ZCALLBACK ftell_file_func	(	voidpf	opaque,
		voidpf	stream
	)

Definition at line 113 of file ioapi.c.

{
    long ret;
    ret = ftell((FILE *)stream);
    return ret;
}

fwrite_file_func()

uLong ZCALLBACK fwrite_file_func	(	voidpf	opaque,
		voidpf	stream,
		const void*	buf,
		uLong	size
	)

Definition at line 102 of file ioapi.c.

{
    uLong ret;
    ret = (uLong)fwrite(buf, 1, (size_t)size, (FILE *)stream);
    return ret;
}

OF() [1/5]

voidpf ZCALLBACK fopen_file_func OF

(

(voidpf opaque, const char *filename, int mode)

)

OF() [2/5]

uLong ZCALLBACK fread_file_func OF

(

(voidpf opaque, voidpf stream, void *buf, uLong size)

)

OF() [3/5]

uLong ZCALLBACK fwrite_file_func OF

(

(voidpf opaque, voidpf stream, const void *buf, uLong size)

)

OF() [4/5]

int ZCALLBACK win32_error_file_func OF

(

(voidpf opaque, voidpf stream)

)

OF() [5/5]

long ZCALLBACK fseek_file_func OF

(

(voidpf opaque, voidpf stream, uLong offset, int origin)

)