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cpl_vsi.h
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1 /******************************************************************************
2 * $Id: cpl_vsi.h 37640 2017-03-07 15:20:35Z rouault $
3 *
4 * Project: CPL - Common Portability Library
5 * Author: Frank Warmerdam, warmerdam@pobox.com
6 * Purpose: Include file defining Virtual File System (VSI) functions, a
7 * layer over POSIX file and other system services.
8 *
9 ******************************************************************************
10 * Copyright (c) 1998, Frank Warmerdam
11 * Copyright (c) 2008-2014, Even Rouault <even dot rouault at mines-paris dot org>
12 *
13 * Permission is hereby granted, free of charge, to any person obtaining a
14 * copy of this software and associated documentation files (the "Software"),
15 * to deal in the Software without restriction, including without limitation
16 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
17 * and/or sell copies of the Software, and to permit persons to whom the
18 * Software is furnished to do so, subject to the following conditions:
19 *
20 * The above copyright notice and this permission notice shall be included
21 * in all copies or substantial portions of the Software.
22 *
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
24 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
25 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
26 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
27 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
28 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
29 * DEALINGS IN THE SOFTWARE.
30 ****************************************************************************/
31
32 #ifndef CPL_VSI_H_INCLUDED
33 #define CPL_VSI_H_INCLUDED
34
35 #include "cpl_port.h"
54 /* -------------------------------------------------------------------- */
55 /* We need access to ``struct stat''. */
56 /* -------------------------------------------------------------------- */
57
58 /* Unix */
59 #if !defined(_WIN32)
60 # include <unistd.h>
61 #endif
62
63 /* Windows */
64 #include <sys/stat.h>
65
66 CPL_C_START
67
69 #ifdef ENABLE_EXPERIMENTAL_CPL_WARN_UNUSED_RESULT
70 #define EXPERIMENTAL_CPL_WARN_UNUSED_RESULT CPL_WARN_UNUSED_RESULT
71 #else
72 #define EXPERIMENTAL_CPL_WARN_UNUSED_RESULT
73 #endif
74
76 /* ==================================================================== */
77 /* stdio file access functions. These do not support large */
78 /* files, and do not go through the virtualization API. */
79 /* ==================================================================== */
80
83 FILE CPL_DLL * VSIFOpen( const char *, const char * ) CPL_WARN_UNUSED_RESULT;
84 int CPL_DLL VSIFClose( FILE * );
85 int CPL_DLL VSIFSeek( FILE *, long, int ) EXPERIMENTAL_CPL_WARN_UNUSED_RESULT;
86 long CPL_DLL VSIFTell( FILE * ) CPL_WARN_UNUSED_RESULT;
87 void CPL_DLL VSIRewind( FILE * );
88 void CPL_DLL VSIFFlush( FILE * );
89
90 size_t CPL_DLL VSIFRead( void *, size_t, size_t, FILE * ) EXPERIMENTAL_CPL_WARN_UNUSED_RESULT;
91 size_t CPL_DLL VSIFWrite( const void *, size_t, size_t, FILE * ) EXPERIMENTAL_CPL_WARN_UNUSED_RESULT;
92 char CPL_DLL *VSIFGets( char *, int, FILE * ) EXPERIMENTAL_CPL_WARN_UNUSED_RESULT;
93 int CPL_DLL VSIFPuts( const char *, FILE * ) EXPERIMENTAL_CPL_WARN_UNUSED_RESULT;
94 int CPL_DLL VSIFPrintf( FILE *, CPL_FORMAT_STRING(const char *), ... ) EXPERIMENTAL_CPL_WARN_UNUSED_RESULT CPL_PRINT_FUNC_FORMAT(2, 3);
95
96 int CPL_DLL VSIFGetc( FILE * ) EXPERIMENTAL_CPL_WARN_UNUSED_RESULT;
97 int CPL_DLL VSIFPutc( int, FILE * ) EXPERIMENTAL_CPL_WARN_UNUSED_RESULT;
98 int CPL_DLL VSIUngetc( int, FILE * ) EXPERIMENTAL_CPL_WARN_UNUSED_RESULT;
99 int CPL_DLL VSIFEof( FILE * ) EXPERIMENTAL_CPL_WARN_UNUSED_RESULT;
100
103 /* ==================================================================== */
104 /* VSIStat() related. */
105 /* ==================================================================== */
106
108 typedef struct stat VSIStatBuf;
109 int CPL_DLL VSIStat( const char *, VSIStatBuf * ) CPL_WARN_UNUSED_RESULT;
112 #ifdef _WIN32
113 # define VSI_ISLNK(x) ( 0 ) /* N/A on Windows */
114 # define VSI_ISREG(x) ((x) & S_IFREG)
115 # define VSI_ISDIR(x) ((x) & S_IFDIR)
116 # define VSI_ISCHR(x) ((x) & S_IFCHR)
117 # define VSI_ISBLK(x) ( 0 ) /* N/A on Windows */
118 #else
119
120 # define VSI_ISLNK(x) S_ISLNK(x)
121
122 # define VSI_ISREG(x) S_ISREG(x)
123
124 # define VSI_ISDIR(x) S_ISDIR(x)
125
126 # define VSI_ISCHR(x) S_ISCHR(x)
127 # define VSI_ISBLK(x) S_ISBLK(x)
128
129 #endif
130
131 /* ==================================================================== */
132 /* 64bit stdio file access functions. If we have a big size */
133 /* defined, then provide prototypes for the large file API, */
134 /* otherwise redefine to use the regular api. */
135 /* ==================================================================== */
136
138 typedef GUIntBig vsi_l_offset;
140 #define VSI_L_OFFSET_MAX GUINTBIG_MAX
141
143 /* Make VSIL_STRICT_ENFORCE active in DEBUG builds */
144 #ifdef DEBUG
145 #define VSIL_STRICT_ENFORCE
146 #endif
147
149 #ifdef VSIL_STRICT_ENFORCE
150
151 typedef struct _VSILFILE VSILFILE;
152 #else
153
154 typedef FILE VSILFILE;
155 #endif
156
157 VSILFILE CPL_DLL * VSIFOpenL( const char *, const char * ) CPL_WARN_UNUSED_RESULT;
158 VSILFILE CPL_DLL * VSIFOpenExL( const char *, const char *, int ) CPL_WARN_UNUSED_RESULT;
159 int CPL_DLL VSIFCloseL( VSILFILE * ) EXPERIMENTAL_CPL_WARN_UNUSED_RESULT;
160 int CPL_DLL VSIFSeekL( VSILFILE *, vsi_l_offset, int ) EXPERIMENTAL_CPL_WARN_UNUSED_RESULT;
161 vsi_l_offset CPL_DLL VSIFTellL( VSILFILE * ) CPL_WARN_UNUSED_RESULT;
162 void CPL_DLL VSIRewindL( VSILFILE * );
163 size_t CPL_DLL VSIFReadL( void *, size_t, size_t, VSILFILE * ) EXPERIMENTAL_CPL_WARN_UNUSED_RESULT;
164 int CPL_DLL VSIFReadMultiRangeL( int nRanges, void ** ppData, const vsi_l_offset* panOffsets, const size_t* panSizes, VSILFILE * ) EXPERIMENTAL_CPL_WARN_UNUSED_RESULT;
165 size_t CPL_DLL VSIFWriteL( const void *, size_t, size_t, VSILFILE * ) EXPERIMENTAL_CPL_WARN_UNUSED_RESULT;
166 int CPL_DLL VSIFEofL( VSILFILE * ) EXPERIMENTAL_CPL_WARN_UNUSED_RESULT;
167 int CPL_DLL VSIFTruncateL( VSILFILE *, vsi_l_offset ) EXPERIMENTAL_CPL_WARN_UNUSED_RESULT;
168 int CPL_DLL VSIFFlushL( VSILFILE * ) EXPERIMENTAL_CPL_WARN_UNUSED_RESULT;
169 int CPL_DLL VSIFPrintfL( VSILFILE *, CPL_FORMAT_STRING(const char *), ... ) EXPERIMENTAL_CPL_WARN_UNUSED_RESULT CPL_PRINT_FUNC_FORMAT(2, 3);
170 int CPL_DLL VSIFPutcL( int, VSILFILE * ) EXPERIMENTAL_CPL_WARN_UNUSED_RESULT;
171
173 typedef enum
174 {
175 VSI_RANGE_STATUS_UNKNOWN,
176 VSI_RANGE_STATUS_DATA,
177 VSI_RANGE_STATUS_HOLE
178 } VSIRangeStatus;
179
180 VSIRangeStatus CPL_DLL VSIFGetRangeStatusL( VSILFILE * fp, vsi_l_offset nStart, vsi_l_offset nLength );
181
182 int CPL_DLL VSIIngestFile( VSILFILE* fp,
183 const char* pszFilename,
184 GByte** ppabyRet,
185 vsi_l_offset* pnSize,
186 GIntBig nMaxSize ) CPL_WARN_UNUSED_RESULT;
187
188 #if defined(VSI_STAT64_T)
189
190 typedef struct VSI_STAT64_T VSIStatBufL;
191 #else
192
193 #define VSIStatBufL VSIStatBuf
194 #endif
195
196 int CPL_DLL VSIStatL( const char *, VSIStatBufL * ) CPL_WARN_UNUSED_RESULT;
197
199 #define VSI_STAT_EXISTS_FLAG 0x1
200
201 #define VSI_STAT_NATURE_FLAG 0x2
202
203 #define VSI_STAT_SIZE_FLAG 0x4
204
205 #define VSI_STAT_SET_ERROR_FLAG 0x8
206
207 int CPL_DLL VSIStatExL( const char * pszFilename, VSIStatBufL * psStatBuf, int nFlags ) CPL_WARN_UNUSED_RESULT;
208
209 int CPL_DLL VSIIsCaseSensitiveFS( const char * pszFilename );
210
211 int CPL_DLL VSISupportsSparseFiles( const char* pszPath );
212
213 void CPL_DLL *VSIFGetNativeFileDescriptorL( VSILFILE* );
214
215 /* ==================================================================== */
216 /* Memory allocation */
217 /* ==================================================================== */
218
219 void CPL_DLL *VSICalloc( size_t, size_t ) CPL_WARN_UNUSED_RESULT;
220 void CPL_DLL *VSIMalloc( size_t ) CPL_WARN_UNUSED_RESULT;
221 void CPL_DLL VSIFree( void * );
222 void CPL_DLL *VSIRealloc( void *, size_t ) CPL_WARN_UNUSED_RESULT;
223 char CPL_DLL *VSIStrdup( const char * ) CPL_WARN_UNUSED_RESULT;
224
225 void CPL_DLL *VSIMallocAligned( size_t nAlignment, size_t nSize ) CPL_WARN_UNUSED_RESULT;
226 void CPL_DLL *VSIMallocAlignedAuto( size_t nSize ) CPL_WARN_UNUSED_RESULT;
227 void CPL_DLL VSIFreeAligned( void* ptr );
228
229 void CPL_DLL *VSIMallocAlignedAutoVerbose( size_t nSize, const char* pszFile, int nLine ) CPL_WARN_UNUSED_RESULT;
231 #define VSI_MALLOC_ALIGNED_AUTO_VERBOSE( size ) VSIMallocAlignedAutoVerbose(size,__FILE__,__LINE__)
232
240 void CPL_DLL *VSIMalloc2( size_t nSize1, size_t nSize2 ) CPL_WARN_UNUSED_RESULT;
241
249 void CPL_DLL *VSIMalloc3( size_t nSize1, size_t nSize2, size_t nSize3 ) CPL_WARN_UNUSED_RESULT;
250
252 void CPL_DLL *VSIMallocVerbose( size_t nSize, const char* pszFile, int nLine ) CPL_WARN_UNUSED_RESULT;
254 #define VSI_MALLOC_VERBOSE( size ) VSIMallocVerbose(size,__FILE__,__LINE__)
255
257 void CPL_DLL *VSIMalloc2Verbose( size_t nSize1, size_t nSize2, const char* pszFile, int nLine ) CPL_WARN_UNUSED_RESULT;
259 #define VSI_MALLOC2_VERBOSE( nSize1, nSize2 ) VSIMalloc2Verbose(nSize1,nSize2,__FILE__,__LINE__)
260
262 void CPL_DLL *VSIMalloc3Verbose( size_t nSize1, size_t nSize2, size_t nSize3, const char* pszFile, int nLine ) CPL_WARN_UNUSED_RESULT;
264 #define VSI_MALLOC3_VERBOSE( nSize1, nSize2, nSize3 ) VSIMalloc3Verbose(nSize1,nSize2,nSize3,__FILE__,__LINE__)
265
267 void CPL_DLL *VSICallocVerbose( size_t nCount, size_t nSize, const char* pszFile, int nLine ) CPL_WARN_UNUSED_RESULT;
269 #define VSI_CALLOC_VERBOSE( nCount, nSize ) VSICallocVerbose(nCount,nSize,__FILE__,__LINE__)
270
272 void CPL_DLL *VSIReallocVerbose( void* pOldPtr, size_t nNewSize, const char* pszFile, int nLine ) CPL_WARN_UNUSED_RESULT;
274 #define VSI_REALLOC_VERBOSE( pOldPtr, nNewSize ) VSIReallocVerbose(pOldPtr,nNewSize,__FILE__,__LINE__)
275
277 char CPL_DLL *VSIStrdupVerbose( const char* pszStr, const char* pszFile, int nLine ) CPL_WARN_UNUSED_RESULT;
279 #define VSI_STRDUP_VERBOSE( pszStr ) VSIStrdupVerbose(pszStr,__FILE__,__LINE__)
280
281 GIntBig CPL_DLL CPLGetPhysicalRAM(void);
282 GIntBig CPL_DLL CPLGetUsablePhysicalRAM(void);
283
284 /* ==================================================================== */
285 /* Other... */
286 /* ==================================================================== */
287
289 #define CPLReadDir VSIReadDir
290 char CPL_DLL **VSIReadDir( const char * );
291 char CPL_DLL **VSIReadDirRecursive( const char *pszPath );
292 char CPL_DLL **VSIReadDirEx( const char *pszPath, int nMaxFiles );
293 int CPL_DLL VSIMkdir( const char * pathname, long mode );
294 int CPL_DLL VSIRmdir( const char * pathname );
295 int CPL_DLL VSIUnlink( const char * pathname );
296 int CPL_DLL VSIRename( const char * oldpath, const char * newpath );
297 char CPL_DLL *VSIStrerror( int );
298 GIntBig CPL_DLL VSIGetDiskFreeSpace(const char *pszDirname);
299
300 /* ==================================================================== */
301 /* Install special file access handlers. */
302 /* ==================================================================== */
303 void CPL_DLL VSIInstallMemFileHandler(void);
305 void CPL_DLL VSIInstallLargeFileHandler(void);
307 void CPL_DLL VSIInstallSubFileHandler(void);
308 void VSIInstallCurlFileHandler(void);
309 void VSIInstallCurlStreamingFileHandler(void);
310 void VSIInstallS3FileHandler(void);
311 void VSIInstallS3StreamingFileHandler(void);
312 void VSIInstallGSFileHandler(void);
313 void VSIInstallGSStreamingFileHandler(void);
314 void VSIInstallGZipFileHandler(void); /* No reason to export that */
315 void VSIInstallZipFileHandler(void); /* No reason to export that */
316 void VSIInstallStdinHandler(void); /* No reason to export that */
317 void VSIInstallStdoutHandler(void); /* No reason to export that */
318 void CPL_DLL VSIInstallSparseFileHandler(void);
319 void VSIInstallTarFileHandler(void); /* No reason to export that */
320 void CPL_DLL VSIInstallCryptFileHandler(void);
321 void CPL_DLL VSISetCryptKey(const GByte* pabyKey, int nKeySize);
323 void CPL_DLL VSICleanupFileManager(void);
326 VSILFILE CPL_DLL *VSIFileFromMemBuffer( const char *pszFilename,
327 GByte *pabyData,
328 vsi_l_offset nDataLength,
329 int bTakeOwnership ) CPL_WARN_UNUSED_RESULT;
330 GByte CPL_DLL *VSIGetMemFileBuffer( const char *pszFilename,
331 vsi_l_offset *pnDataLength,
332 int bUnlinkAndSeize );
333
335 typedef size_t (*VSIWriteFunction)(const void* ptr, size_t size, size_t nmemb, FILE* stream);
336 void CPL_DLL VSIStdoutSetRedirection( VSIWriteFunction pFct, FILE* stream );
337
338 /* ==================================================================== */
339 /* Time querying. */
340 /* ==================================================================== */
341
343 unsigned long CPL_DLL VSITime( unsigned long * );
344 const char CPL_DLL *VSICTime( unsigned long );
345 struct tm CPL_DLL *VSIGMTime( const time_t *pnTime,
346 struct tm *poBrokenTime );
347 struct tm CPL_DLL *VSILocalTime( const time_t *pnTime,
348 struct tm *poBrokenTime );
352 /* -------------------------------------------------------------------- */
353 /* the following can be turned on for detailed logging of */
354 /* almost all IO calls. */
355 /* -------------------------------------------------------------------- */
356 #ifdef VSI_DEBUG
357
358 #ifndef DEBUG
359 # define DEBUG
360 #endif
361
362 #include "cpl_error.h"
363
364 #define VSIDebug4(f,a1,a2,a3,a4) CPLDebug( "VSI", f, a1, a2, a3, a4 );
365 #define VSIDebug3( f, a1, a2, a3 ) CPLDebug( "VSI", f, a1, a2, a3 );
366 #define VSIDebug2( f, a1, a2 ) CPLDebug( "VSI", f, a1, a2 );
367 #define VSIDebug1( f, a1 ) CPLDebug( "VSI", f, a1 );
368 #else
369 #define VSIDebug4( f, a1, a2, a3, a4 ) {}
370 #define VSIDebug3( f, a1, a2, a3 ) {}
371 #define VSIDebug2( f, a1, a2 ) {}
372 #define VSIDebug1( f, a1 ) {}
373 #endif
374
376 CPL_C_END
377
378 #endif /* ndef CPL_VSI_H_INCLUDED */
VSIMkdir
int VSIMkdir(const char *pathname, long mode)
Create a directory.
Definition: cpl_vsil.cpp:329
VSIRangeStatus
VSIRangeStatus
Range status.
Definition: cpl_vsi.h:173
CPLGetPhysicalRAM
GIntBig CPLGetPhysicalRAM(void)
Return the total physical RAM in bytes.
Definition: cpl_vsisimple.cpp:1352
VSIMalloc2Verbose
void * VSIMalloc2Verbose(size_t nSize1, size_t nSize2, const char *pszFile, int nLine) CPL_WARN_UNUSED_RESULT
VSIMalloc2Verbose.
Definition: cpl_vsisimple.cpp:1143
VSIReadDir
char ** VSIReadDir(const char *)
Read names in a directory.
Definition: cpl_vsil.cpp:82
VSIRename
int VSIRename(const char *oldpath, const char *newpath)
Rename a file.
Definition: cpl_vsil.cpp:388
VSIMalloc
void * VSIMalloc(size_t) CPL_WARN_UNUSED_RESULT
Analog of malloc().
Definition: cpl_vsisimple.cpp:548
VSIRewindL
void VSIRewindL(VSILFILE *)
Rewind the file pointer to the beginning of the file.
Definition: cpl_vsil.cpp:829
VSIStatExL
int VSIStatExL(const char *pszFilename, VSIStatBufL *psStatBuf, int nFlags) CPL_WARN_UNUSED_RESULT
Get filesystem object info.
Definition: cpl_vsil.cpp:490
VSIFGetNativeFileDescriptorL
void * VSIFGetNativeFileDescriptorL(VSILFILE *)
Returns the "native" file descriptor for the virtual handle.
Definition: cpl_vsil.cpp:1473
cpl_port.h
Core portability definitions for CPL.
VSIFTellL
vsi_l_offset VSIFTellL(VSILFILE *) CPL_WARN_UNUSED_RESULT
Tell current file offset.
Definition: cpl_vsil.cpp:807
CPL_C_START
#define CPL_C_START
Macro to start a block of C symbols.
Definition: cpl_port.h:352
VSI_RANGE_STATUS_HOLE
Hole.
Definition: cpl_vsi.h:177
VSIFEofL
int VSIFEofL(VSILFILE *) EXPERIMENTAL_CPL_WARN_UNUSED_RESULT
Test for end of file.
Definition: cpl_vsil.cpp:1082
VSILFILE
FILE VSILFILE
Opaque type for a FILE that implements the VSIVirtualHandle API.
Definition: cpl_vsi.h:154
VSIIngestFile
int VSIIngestFile(VSILFILE *fp, const char *pszFilename, GByte **ppabyRet, vsi_l_offset *pnSize, GIntBig nMaxSize) CPL_WARN_UNUSED_RESULT
Ingest a file into memory.
Definition: cpl_vsil.cpp:1278
VSIInstallS3FileHandler
void VSIInstallS3FileHandler(void)
Install /vsis3/ Amazon S3 file system handler (requires libcurl)
Definition: cpl_vsil_curl.cpp:4962
VSIFreeAligned
void VSIFreeAligned(void *ptr)
Free a buffer allocated with VSIMallocAligned().
Definition: cpl_vsisimple.cpp:965
VSIFPutcL
int VSIFPutcL(int, VSILFILE *) EXPERIMENTAL_CPL_WARN_UNUSED_RESULT
Write a single byte to the file.
Definition: cpl_vsil.cpp:1187
VSIReadDirEx
char ** VSIReadDirEx(const char *pszPath, int nMaxFiles)
Read names in a directory.
Definition: cpl_vsil.cpp:116
VSIFReadL
size_t VSIFReadL(void *, size_t, size_t, VSILFILE *) EXPERIMENTAL_CPL_WARN_UNUSED_RESULT
Read bytes from file.
Definition: cpl_vsil.cpp:922
VSIMallocAlignedAutoVerbose
void * VSIMallocAlignedAutoVerbose(size_t nSize, const char *pszFile, int nLine) CPL_WARN_UNUSED_RESULT
See VSIMallocAlignedAuto()
Definition: cpl_vsisimple.cpp:941
VSIStdoutSetRedirection
void VSIStdoutSetRedirection(VSIWriteFunction pFct, FILE *stream)
Set an alternative write function and output file handle instead of fwrite() / stdout.
Definition: cpl_vsil_stdout.cpp:64
CPLGetUsablePhysicalRAM
GIntBig CPLGetUsablePhysicalRAM(void)
Return the total physical RAM, usable by a process, in bytes.
Definition: cpl_vsisimple.cpp:1423
VSI_RANGE_STATUS_DATA
Data present.
Definition: cpl_vsi.h:176
GByte
unsigned char GByte
Unsigned byte type.
Definition: cpl_port.h:207
VSIMalloc3
void * VSIMalloc3(size_t nSize1, size_t nSize2, size_t nSize3) CPL_WARN_UNUSED_RESULT
VSIMalloc3 allocates (nSize1 * nSize2 * nSize3) bytes.
Definition: cpl_vsisimple.cpp:1117
VSIRealloc
void * VSIRealloc(void *, size_t) CPL_WARN_UNUSED_RESULT
Analog of realloc().
Definition: cpl_vsisimple.cpp:671
CPL_PRINT_FUNC_FORMAT
#define CPL_PRINT_FUNC_FORMAT(format_idx, arg_idx)
Tag a function to have printf() formatting.
Definition: cpl_port.h:967
VSIInstallGSStreamingFileHandler
void VSIInstallGSStreamingFileHandler(void)
Install /vsigs_streaming/ Google Cloud Storage file system handler (requires libcurl) ...
Definition: cpl_vsil_curl_streaming.cpp:2025
VSIMallocAlignedAuto
void * VSIMallocAlignedAuto(size_t nSize) CPL_WARN_UNUSED_RESULT
Allocates a buffer with an alignment constraint such that it can be used by the most demanding vector...
Definition: cpl_vsisimple.cpp:928
VSISupportsSparseFiles
int VSISupportsSparseFiles(const char *pszPath)
Returns if the filesystem supports sparse files.
Definition: cpl_vsil.cpp:570
VSIFTruncateL
int VSIFTruncateL(VSILFILE *, vsi_l_offset) EXPERIMENTAL_CPL_WARN_UNUSED_RESULT
Truncate/expand the file to the specified size.
Definition: cpl_vsil.cpp:1124
VSIInstallStdoutHandler
void VSIInstallStdoutHandler(void)
Install /vsistdout/ file system handler.
Definition: cpl_vsil_stdout.cpp:434
VSIInstallSubFileHandler
void VSIInstallSubFileHandler(void)
Install /vsisubfile/ virtual file handler.
Definition: cpl_vsil_subfile.cpp:487
VSIInstallGSFileHandler
void VSIInstallGSFileHandler(void)
Install /vsigs/ Google Cloud Storage file system handler (requires libcurl)
Definition: cpl_vsil_curl.cpp:5013
VSIInstallCurlStreamingFileHandler
void VSIInstallCurlStreamingFileHandler(void)
Install /vsicurl_streaming/ HTTP/FTP file system handler (requires libcurl).
Definition: cpl_vsil_curl_streaming.cpp:1922
VSIFOpenL
VSILFILE * VSIFOpenL(const char *, const char *) CPL_WARN_UNUSED_RESULT
Open file.
Definition: cpl_vsil.cpp:608
VSIInstallStdinHandler
void VSIInstallStdinHandler(void)
Install /vsistdin/ file system handler.
Definition: cpl_vsil_stdin.cpp:421
VSIReallocVerbose
void * VSIReallocVerbose(void *pOldPtr, size_t nNewSize, const char *pszFile, int nLine) CPL_WARN_UNUSED_RESULT
VSIReallocVerbose.
Definition: cpl_vsisimple.cpp:1212
VSIStrerror
char * VSIStrerror(int)
Return the error string corresponding to the error number.
Definition: cpl_vsisimple.cpp:1335
VSIInstallTarFileHandler
void VSIInstallTarFileHandler(void)
Install /vsitar/ file system handler.
Definition: cpl_vsil_tar.cpp:538
VSIInstallZipFileHandler
void VSIInstallZipFileHandler(void)
Install ZIP file system handler.
Definition: cpl_vsil_gzip.cpp:2630
VSIIsCaseSensitiveFS
int VSIIsCaseSensitiveFS(const char *pszFilename)
Returns if the filenames of the filesystem are case sensitive.
Definition: cpl_vsil.cpp:540
VSIStatBufL
struct VSI_STAT64_T VSIStatBufL
Type for VSIStatL()
Definition: cpl_vsi.h:190
VSIFCloseL
int VSIFCloseL(VSILFILE *) EXPERIMENTAL_CPL_WARN_UNUSED_RESULT
Close file.
Definition: cpl_vsil.cpp:712
VSIFWriteL
size_t VSIFWriteL(const void *, size_t, size_t, VSILFILE *) EXPERIMENTAL_CPL_WARN_UNUSED_RESULT
Write bytes to file.
Definition: cpl_vsil.cpp:1036
VSI_RANGE_STATUS_UNKNOWN
Unknown.
Definition: cpl_vsi.h:175
VSIMalloc2
void * VSIMalloc2(size_t nSize1, size_t nSize2) CPL_WARN_UNUSED_RESULT
VSIMalloc2 allocates (nSize1 * nSize2) bytes.
Definition: cpl_vsisimple.cpp:1104
VSIFGetRangeStatusL
VSIRangeStatus VSIFGetRangeStatusL(VSILFILE *fp, vsi_l_offset nStart, vsi_l_offset nLength)
Return if a given file range contains data or holes filled with zeroes.
Definition: cpl_vsil.cpp:1241
VSIGetDiskFreeSpace
GIntBig VSIGetDiskFreeSpace(const char *pszDirname)
Return free disk space available on the filesystem.
Definition: cpl_vsil.cpp:1494
cpl_error.h
CPL error handling services.
VSIInstallSparseFileHandler
void VSIInstallSparseFileHandler(void)
Install /vsisparse/ virtual file handler.
Definition: cpl_vsil_sparsefile.cpp:587
VSICallocVerbose
void * VSICallocVerbose(size_t nCount, size_t nSize, const char *pszFile, int nLine) CPL_WARN_UNUSED_RESULT
VSICallocVerbose.
Definition: cpl_vsisimple.cpp:1193
VSIMallocAligned
void * VSIMallocAligned(size_t nAlignment, size_t nSize) CPL_WARN_UNUSED_RESULT
Allocates a buffer with an alignment constraint.
Definition: cpl_vsisimple.cpp:882
VSIInstallGZipFileHandler
void VSIInstallGZipFileHandler(void)
Install GZip file system handler.
Definition: cpl_vsil_gzip.cpp:1801
VSIStatL
int VSIStatL(const char *, VSIStatBufL *) CPL_WARN_UNUSED_RESULT
Get filesystem object info.
Definition: cpl_vsil.cpp:451
GUIntBig
unsigned long long GUIntBig
Large unsigned integer type (generally 64-bit unsigned integer type).
Definition: cpl_port.h:253
VSIFileFromMemBuffer
VSILFILE * VSIFileFromMemBuffer(const char *pszFilename, GByte *pabyData, vsi_l_offset nDataLength, int bTakeOwnership) CPL_WARN_UNUSED_RESULT
Create memory "file" from a buffer.
Definition: cpl_vsi_mem.cpp:934
VSIStrdupVerbose
char * VSIStrdupVerbose(const char *pszStr, const char *pszFile, int nLine) CPL_WARN_UNUSED_RESULT
VSIStrdupVerbose.
Definition: cpl_vsisimple.cpp:1230
VSIFFlushL
int VSIFFlushL(VSILFILE *) EXPERIMENTAL_CPL_WARN_UNUSED_RESULT
Flush pending writes to disk.
Definition: cpl_vsil.cpp:870
VSIWriteFunction
size_t(* VSIWriteFunction)(const void *ptr, size_t size, size_t nmemb, FILE *stream)
Callback used by VSIStdoutSetRedirection()
Definition: cpl_vsi.h:335
VSIInstallCryptFileHandler
void VSIInstallCryptFileHandler(void)
Install /vsicrypt/ encrypted file system handler (requires libcrypto++)
Definition: cpl_vsil_crypt.cpp:2033
VSIFSeekL
int VSIFSeekL(VSILFILE *, vsi_l_offset, int) EXPERIMENTAL_CPL_WARN_UNUSED_RESULT
Seek to requested offset.
Definition: cpl_vsil.cpp:764
VSIRmdir
int VSIRmdir(const char *pathname)
Delete a directory.
Definition: cpl_vsil.cpp:417
VSIInstallCurlFileHandler
void VSIInstallCurlFileHandler(void)
Install /vsicurl/ HTTP/FTP file system handler (requires libcurl)
Definition: cpl_vsil_curl.cpp:4895
CPL_FORMAT_STRING
#define CPL_FORMAT_STRING(arg)
Macro into which to wrap the format argument of a printf-like function.
Definition: cpl_port.h:989
VSIUnlink
int VSIUnlink(const char *pathname)
Delete a file.
Definition: cpl_vsil.cpp:357
VSIMallocVerbose
void * VSIMallocVerbose(size_t nSize, const char *pszFile, int nLine) CPL_WARN_UNUSED_RESULT
VSIMallocVerbose.
Definition: cpl_vsisimple.cpp:1126
VSIMalloc3Verbose
void * VSIMalloc3Verbose(size_t nSize1, size_t nSize2, size_t nSize3, const char *pszFile, int nLine) CPL_WARN_UNUSED_RESULT
VSIMalloc3Verbose.
Definition: cpl_vsisimple.cpp:1168
vsi_l_offset
GUIntBig vsi_l_offset
Type for a file offset.
Definition: cpl_vsi.h:138
VSIFReadMultiRangeL
int VSIFReadMultiRangeL(int nRanges, void **ppData, const vsi_l_offset *panOffsets, const size_t *panSizes, VSILFILE *) EXPERIMENTAL_CPL_WARN_UNUSED_RESULT
Read several ranges of bytes from file.
Definition: cpl_vsil.cpp:982
VSIFPrintfL
int VSIFPrintfL(VSILFILE *, const char *,...) EXPERIMENTAL_CPL_WARN_UNUSED_RESULT
Formatted write to file.
Definition: cpl_vsil.cpp:1150
VSICalloc
void * VSICalloc(size_t, size_t) CPL_WARN_UNUSED_RESULT
Analog of calloc().
Definition: cpl_vsisimple.cpp:438
CPL_C_END
#define CPL_C_END
Macro to end a block of C symbols.
Definition: cpl_port.h:354
GIntBig
long long GIntBig
Large signed integer type (generally 64-bit integer type).
Definition: cpl_port.h:250
VSIInstallMemFileHandler
void VSIInstallMemFileHandler(void)
Install "memory" file system handler.
Definition: cpl_vsi_mem.cpp:904
VSIFree
void VSIFree(void *)
Analog of free() for data allocated with VSIMalloc(), VSICalloc(), VSIRealloc()
Definition: cpl_vsisimple.cpp:817
VSIGetMemFileBuffer
GByte * VSIGetMemFileBuffer(const char *pszFilename, vsi_l_offset *pnDataLength, int bUnlinkAndSeize)
Fetch buffer underlying memory file.
Definition: cpl_vsi_mem.cpp:993
VSIFOpenExL
VSILFILE * VSIFOpenExL(const char *, const char *, int) CPL_WARN_UNUSED_RESULT
Open file.
Definition: cpl_vsil.cpp:662
VSISetCryptKey
void VSISetCryptKey(const GByte *pabyKey, int nKeySize)
Installs the encryption/decryption key.
Definition: cpl_vsil_crypt.cpp:197
VSIReadDirRecursive
char ** VSIReadDirRecursive(const char *pszPath)
Read names in a directory recursively.
Definition: cpl_vsil.cpp:159
VSIStrdup
char * VSIStrdup(const char *) CPL_WARN_UNUSED_RESULT
Analog of strdup().
Definition: cpl_vsisimple.cpp:985
VSIInstallS3StreamingFileHandler
void VSIInstallS3StreamingFileHandler(void)
Install /vsis3_streaming/ Amazon S3 file system handler (requires libcurl).
Definition: cpl_vsil_curl_streaming.cpp:1974
CPL_WARN_UNUSED_RESULT
#define CPL_WARN_UNUSED_RESULT
Qualifier to warn when the return value of a function is not used.
Definition: cpl_port.h:999

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