/usr/include/gdal/cpl_vsi.h is in libgdal1-dev 1.7.3-6ubuntu3.
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* $Id: cpl_vsi.h 18725 2010-02-04 21:02:19Z rouault $
*
* Project: CPL - Common Portability Library
* Author: Frank Warmerdam, warmerdam@pobox.com
* Purpose: Include file defining Virtual File System (VSI) functions, a
* layer over POSIX file and other system services.
*
******************************************************************************
* Copyright (c) 1998, Frank Warmerdam
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
****************************************************************************/
#ifndef CPL_VSI_H_INCLUDED
#define CPL_VSI_H_INCLUDED
#include "cpl_port.h"
/**
* \file cpl_vsi.h
*
* Standard C Covers
*
* The VSI functions are intended to be hookable aliases for Standard C
* I/O, memory allocation and other system functions. They are intended
* to allow virtualization of disk I/O so that non file data sources
* can be made to appear as files, and so that additional error trapping
* and reporting can be interested. The memory access API is aliased
* so that special application memory management services can be used.
*
* Is is intended that each of these functions retains exactly the same
* calling pattern as the original Standard C functions they relate to.
* This means we don't have to provide custom documentation, and also means
* that the default implementation is very simple.
*/
/* -------------------------------------------------------------------- */
/* We need access to ``struct stat''. */
/* -------------------------------------------------------------------- */
/* Unix */
#if !defined(_WIN32) && !defined(_WIN32_WCE)
# include <unistd.h>
#endif
/* Windows */
#if !defined(macos_pre10) && !defined(_WIN32_WCE)
# include <sys/stat.h>
#endif
/* Windows CE */
#if defined(_WIN32_WCE)
# include <wce_stat.h>
#endif
CPL_C_START
/* ==================================================================== */
/* stdio file access functions. These may not support large */
/* files, and don't necessarily go through the virtualization */
/* API. */
/* ==================================================================== */
FILE CPL_DLL * VSIFOpen( const char *, const char * );
int CPL_DLL VSIFClose( FILE * );
int CPL_DLL VSIFSeek( FILE *, long, int );
long CPL_DLL VSIFTell( FILE * );
void CPL_DLL VSIRewind( FILE * );
void CPL_DLL VSIFFlush( FILE * );
size_t CPL_DLL VSIFRead( void *, size_t, size_t, FILE * );
size_t CPL_DLL VSIFWrite( const void *, size_t, size_t, FILE * );
char CPL_DLL *VSIFGets( char *, int, FILE * );
int CPL_DLL VSIFPuts( const char *, FILE * );
int CPL_DLL VSIFPrintf( FILE *, const char *, ... ) CPL_PRINT_FUNC_FORMAT(2, 3);
int CPL_DLL VSIFGetc( FILE * );
int CPL_DLL VSIFPutc( int, FILE * );
int CPL_DLL VSIUngetc( int, FILE * );
int CPL_DLL VSIFEof( FILE * );
/* ==================================================================== */
/* VSIStat() related. */
/* ==================================================================== */
typedef struct stat VSIStatBuf;
int CPL_DLL VSIStat( const char *, VSIStatBuf * );
#ifdef _WIN32
# define VSI_ISLNK(x) ( 0 ) /* N/A on Windows */
# define VSI_ISREG(x) ((x) & S_IFREG)
# define VSI_ISDIR(x) ((x) & S_IFDIR)
# define VSI_ISCHR(x) ((x) & S_IFCHR)
# define VSI_ISBLK(x) ( 0 ) /* N/A on Windows */
#else
# define VSI_ISLNK(x) S_ISLNK(x)
# define VSI_ISREG(x) S_ISREG(x)
# define VSI_ISDIR(x) S_ISDIR(x)
# define VSI_ISCHR(x) S_ISCHR(x)
# define VSI_ISBLK(x) S_ISBLK(x)
#endif
/* ==================================================================== */
/* 64bit stdio file access functions. If we have a big size */
/* defined, then provide protypes for the large file API, */
/* otherwise redefine to use the regular api. */
/* ==================================================================== */
typedef GUIntBig vsi_l_offset;
FILE CPL_DLL * VSIFOpenL( const char *, const char * );
int CPL_DLL VSIFCloseL( FILE * );
int CPL_DLL VSIFSeekL( FILE *, vsi_l_offset, int );
vsi_l_offset CPL_DLL VSIFTellL( FILE * );
void CPL_DLL VSIRewindL( FILE * );
size_t CPL_DLL VSIFReadL( void *, size_t, size_t, FILE * );
size_t CPL_DLL VSIFWriteL( const void *, size_t, size_t, FILE * );
int CPL_DLL VSIFEofL( FILE * );
int CPL_DLL VSIFFlushL( FILE * );
int CPL_DLL VSIFPrintfL( FILE *, const char *, ... ) CPL_PRINT_FUNC_FORMAT(2, 3);
int CPL_DLL VSIFPutcL( int, FILE * );
#if defined(VSI_STAT64_T)
typedef struct VSI_STAT64_T VSIStatBufL;
#else
#define VSIStatBufL VSIStatBuf
#endif
int CPL_DLL VSIStatL( const char *, VSIStatBufL * );
/* ==================================================================== */
/* Memory allocation */
/* ==================================================================== */
void CPL_DLL *VSICalloc( size_t, size_t );
void CPL_DLL *VSIMalloc( size_t );
void CPL_DLL VSIFree( void * );
void CPL_DLL *VSIRealloc( void *, size_t );
char CPL_DLL *VSIStrdup( const char * );
/**
VSIMalloc2 allocates (nSize1 * nSize2) bytes.
In case of overflow of the multiplication, or if memory allocation fails, a
NULL pointer is returned and a CE_Failure error is raised with CPLError().
If nSize1 == 0 || nSize2 == 0, a NULL pointer will also be returned.
CPLFree() or VSIFree() can be used to free memory allocated by this function.
*/
void CPL_DLL *VSIMalloc2( size_t nSize1, size_t nSize2 );
/**
VSIMalloc3 allocates (nSize1 * nSize2 * nSize3) bytes.
In case of overflow of the multiplication, or if memory allocation fails, a
NULL pointer is returned and a CE_Failure error is raised with CPLError().
If nSize1 == 0 || nSize2 == 0 || nSize3 == 0, a NULL pointer will also be returned.
CPLFree() or VSIFree() can be used to free memory allocated by this function.
*/
void CPL_DLL *VSIMalloc3( size_t nSize1, size_t nSize2, size_t nSize3 );
/* ==================================================================== */
/* Other... */
/* ==================================================================== */
#define CPLReadDir VSIReadDir
char CPL_DLL **VSIReadDir( const char * );
int CPL_DLL VSIMkdir( const char * pathname, long mode );
int CPL_DLL VSIRmdir( const char * pathname );
int CPL_DLL VSIUnlink( const char * pathname );
int CPL_DLL VSIRename( const char * oldpath, const char * newpath );
char CPL_DLL *VSIStrerror( int );
/* ==================================================================== */
/* Install special file access handlers. */
/* ==================================================================== */
void CPL_DLL VSIInstallMemFileHandler(void);
void CPL_DLL VSIInstallLargeFileHandler(void);
void CPL_DLL VSIInstallSubFileHandler(void);
void VSIInstallGZipFileHandler(void); /* No reason to export that */
void VSIInstallZipFileHandler(void); /* No reason to export that */
void VSIInstallStdoutHandler(void); /* No reason to export that */
void CPL_DLL VSICleanupFileManager(void);
FILE CPL_DLL *VSIFileFromMemBuffer( const char *pszFilename,
GByte *pabyData,
vsi_l_offset nDataLength,
int bTakeOwnership );
GByte CPL_DLL *VSIGetMemFileBuffer( const char *pszFilename,
vsi_l_offset *pnDataLength,
int bUnlinkAndSeize );
/* ==================================================================== */
/* Time quering. */
/* ==================================================================== */
unsigned long CPL_DLL VSITime( unsigned long * );
const char CPL_DLL *VSICTime( unsigned long );
struct tm CPL_DLL *VSIGMTime( const time_t *pnTime,
struct tm *poBrokenTime );
struct tm CPL_DLL *VSILocalTime( const time_t *pnTime,
struct tm *poBrokenTime );
/* -------------------------------------------------------------------- */
/* the following can be turned on for detailed logging of */
/* almost all IO calls. */
/* -------------------------------------------------------------------- */
#ifdef VSI_DEBUG
#ifndef DEBUG
# define DEBUG
#endif
#include "cpl_error.h"
#define VSIDebug4(f,a1,a2,a3,a4) CPLDebug( "VSI", f, a1, a2, a3, a4 );
#define VSIDebug3( f, a1, a2, a3 ) CPLDebug( "VSI", f, a1, a2, a3 );
#define VSIDebug2( f, a1, a2 ) CPLDebug( "VSI", f, a1, a2 );
#define VSIDebug1( f, a1 ) CPLDebug( "VSI", f, a1 );
#else
#define VSIDebug4( f, a1, a2, a3, a4 ) {}
#define VSIDebug3( f, a1, a2, a3 ) {}
#define VSIDebug2( f, a1, a2 ) {}
#define VSIDebug1( f, a1 ) {}
#endif
CPL_C_END
#endif /* ndef CPL_VSI_H_INCLUDED */
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