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/******************************************************************************
 * $Id: cpl_conv.h 37866 2017-03-30 20:16:05Z rouault $
 *
 * Project:  CPL - Common Portability Library
 * Purpose:  Convenience functions declarations.
 *           This is intended to remain light weight.
 * Author:   Frank Warmerdam, warmerdam@pobox.com
 *
 ******************************************************************************
 * Copyright (c) 1998, Frank Warmerdam
 * Copyright (c) 2007-2013, Even Rouault <even dot rouault at mines-paris dot org>
 *
 * 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_CONV_H_INCLUDED
#define CPL_CONV_H_INCLUDED

#include "cpl_port.h"
#include "cpl_vsi.h"
#include "cpl_error.h"

/**
 * \file cpl_conv.h
 *
 * Various convenience functions for CPL.
 *
 */

/* -------------------------------------------------------------------- */
/*      Runtime check of various configuration items.                   */
/* -------------------------------------------------------------------- */
CPL_C_START

/*! @cond Doxygen_Suppress */
void CPL_DLL CPLVerifyConfiguration(void);
/*! @endcond */

const char CPL_DLL * CPL_STDCALL
CPLGetConfigOption( const char *, const char * ) CPL_WARN_UNUSED_RESULT;
const char CPL_DLL * CPL_STDCALL
CPLGetThreadLocalConfigOption( const char *, const char * ) CPL_WARN_UNUSED_RESULT;
void CPL_DLL CPL_STDCALL CPLSetConfigOption( const char *, const char * );
void CPL_DLL CPL_STDCALL CPLSetThreadLocalConfigOption( const char *pszKey,
                                                        const char *pszValue );
/*! @cond Doxygen_Suppress */
void CPL_DLL CPL_STDCALL CPLFreeConfig(void);
/*! @endcond */
char CPL_DLL** CPLGetConfigOptions(void);
void CPL_DLL   CPLSetConfigOptions(const char* const * papszConfigOptions);
char CPL_DLL** CPLGetThreadLocalConfigOptions(void);
void CPL_DLL   CPLSetThreadLocalConfigOptions(const char* const * papszConfigOptions);

/* -------------------------------------------------------------------- */
/*      Safe malloc() API.  Thin cover over VSI functions with fatal    */
/*      error reporting if memory allocation fails.                     */
/* -------------------------------------------------------------------- */
void CPL_DLL *CPLMalloc( size_t ) CPL_WARN_UNUSED_RESULT;
void CPL_DLL *CPLCalloc( size_t, size_t ) CPL_WARN_UNUSED_RESULT;
void CPL_DLL *CPLRealloc( void *, size_t ) CPL_WARN_UNUSED_RESULT;
char CPL_DLL *CPLStrdup( const char * ) CPL_WARN_UNUSED_RESULT CPL_RETURNS_NONNULL;
char CPL_DLL *CPLStrlwr( char *);

/** Alias of VSIFree() */
#define CPLFree VSIFree

/* -------------------------------------------------------------------- */
/*      Read a line from a text file, and strip of CR/LF.               */
/* -------------------------------------------------------------------- */
char CPL_DLL *CPLFGets( char *, int, FILE *);
const char CPL_DLL *CPLReadLine( FILE * );
const char CPL_DLL *CPLReadLineL( VSILFILE * );
#ifdef __cplusplus
const char CPL_DLL *CPLReadLine2L( VSILFILE * , int nMaxCols,
                                   const char * const * papszOptions );
#else
const char CPL_DLL *CPLReadLine2L( VSILFILE * , int nMaxCols,
                                   char** papszOptions );
#endif

/* -------------------------------------------------------------------- */
/*      Convert ASCII string to floating point number                  */
/*      (THESE FUNCTIONS ARE NOT LOCALE AWARE!).                        */
/* -------------------------------------------------------------------- */
double CPL_DLL CPLAtof(const char *);
double CPL_DLL CPLAtofDelim(const char *, char);
double CPL_DLL CPLStrtod(const char *, char **);
double CPL_DLL CPLStrtodDelim(const char *, char **, char);
float CPL_DLL CPLStrtof(const char *, char **);
float CPL_DLL CPLStrtofDelim(const char *, char **, char);

/* -------------------------------------------------------------------- */
/*      Convert number to string.  This function is locale agnostic     */
/*      (i.e. it will support "," or "." regardless of current locale)  */
/* -------------------------------------------------------------------- */
double CPL_DLL CPLAtofM(const char *);

/* -------------------------------------------------------------------- */
/*      Read a numeric value from an ASCII character string.            */
/* -------------------------------------------------------------------- */
char CPL_DLL *CPLScanString( const char *, int, int, int );
double CPL_DLL CPLScanDouble( const char *, int );
long CPL_DLL CPLScanLong( const char *, int );
unsigned long CPL_DLL CPLScanULong( const char *, int );
GUIntBig CPL_DLL CPLScanUIntBig( const char *, int );
GIntBig CPL_DLL CPLAtoGIntBig( const char* pszString );
GIntBig CPL_DLL CPLAtoGIntBigEx( const char* pszString, int bWarn, int *pbOverflow );
void CPL_DLL *CPLScanPointer( const char *, int );

/* -------------------------------------------------------------------- */
/*      Print a value to an ASCII character string.                     */
/* -------------------------------------------------------------------- */
int CPL_DLL CPLPrintString( char *, const char *, int );
int CPL_DLL CPLPrintStringFill( char *, const char *, int );
int CPL_DLL CPLPrintInt32( char *, GInt32 , int );
int CPL_DLL CPLPrintUIntBig( char *, GUIntBig , int );
int CPL_DLL CPLPrintDouble( char *, const char *, double, const char * );
int CPL_DLL CPLPrintTime( char *, int , const char *, const struct tm *,
                          const char * );
int CPL_DLL CPLPrintPointer( char *, void *, int );

/* -------------------------------------------------------------------- */
/*      Fetch a function from DLL / so.                                 */
/* -------------------------------------------------------------------- */

void CPL_DLL *CPLGetSymbol( const char *, const char * );

/* -------------------------------------------------------------------- */
/*      Fetch executable path.                                          */
/* -------------------------------------------------------------------- */
int CPL_DLL CPLGetExecPath( char *pszPathBuf, int nMaxLength );

/* -------------------------------------------------------------------- */
/*      Filename handling functions.                                    */
/* -------------------------------------------------------------------- */
const char CPL_DLL *CPLGetPath( const char * ) CPL_WARN_UNUSED_RESULT CPL_RETURNS_NONNULL;
const char CPL_DLL *CPLGetDirname( const char * ) CPL_WARN_UNUSED_RESULT CPL_RETURNS_NONNULL;
const char CPL_DLL *CPLGetFilename( const char * ) CPL_WARN_UNUSED_RESULT CPL_RETURNS_NONNULL;
const char CPL_DLL *CPLGetBasename( const char * ) CPL_WARN_UNUSED_RESULT CPL_RETURNS_NONNULL;
const char CPL_DLL *CPLGetExtension( const char * ) CPL_WARN_UNUSED_RESULT CPL_RETURNS_NONNULL;
char       CPL_DLL *CPLGetCurrentDir(void);
const char CPL_DLL *CPLFormFilename( const char *pszPath,
                                     const char *pszBasename,
                                     const char *pszExtension ) CPL_WARN_UNUSED_RESULT CPL_RETURNS_NONNULL;
const char CPL_DLL *CPLFormCIFilename( const char *pszPath,
                                       const char *pszBasename,
                                       const char *pszExtension ) CPL_WARN_UNUSED_RESULT CPL_RETURNS_NONNULL;
const char CPL_DLL *CPLResetExtension( const char *, const char * ) CPL_WARN_UNUSED_RESULT CPL_RETURNS_NONNULL;
const char CPL_DLL *CPLProjectRelativeFilename( const char *pszProjectDir,
                                            const char *pszSecondaryFilename ) CPL_WARN_UNUSED_RESULT CPL_RETURNS_NONNULL;
int CPL_DLL CPLIsFilenameRelative( const char *pszFilename );
const char CPL_DLL *CPLExtractRelativePath(const char *, const char *, int *) CPL_WARN_UNUSED_RESULT CPL_RETURNS_NONNULL;
const char CPL_DLL *CPLCleanTrailingSlash( const char * ) CPL_WARN_UNUSED_RESULT CPL_RETURNS_NONNULL;
char CPL_DLL      **CPLCorrespondingPaths( const char *pszOldFilename,
                                           const char *pszNewFilename,
                                           char **papszFileList ) CPL_WARN_UNUSED_RESULT;
int CPL_DLL CPLCheckForFile( char *pszFilename, char **papszSiblingList );

const char CPL_DLL *CPLGenerateTempFilename( const char *pszStem ) CPL_WARN_UNUSED_RESULT CPL_RETURNS_NONNULL;
const char CPL_DLL *CPLExpandTilde( const char *pszFilename ) CPL_WARN_UNUSED_RESULT CPL_RETURNS_NONNULL;

/* -------------------------------------------------------------------- */
/*      Find File Function                                              */
/* -------------------------------------------------------------------- */

/** Callback for CPLPushFileFinder */
typedef const char *(*CPLFileFinder)(const char *, const char *);

const char    CPL_DLL *CPLFindFile(const char *pszClass,
                                   const char *pszBasename);
const char    CPL_DLL *CPLDefaultFindFile(const char *pszClass,
                                          const char *pszBasename);
void          CPL_DLL CPLPushFileFinder( CPLFileFinder pfnFinder );
CPLFileFinder CPL_DLL CPLPopFileFinder(void);
void          CPL_DLL CPLPushFinderLocation( const char * );
void          CPL_DLL CPLPopFinderLocation(void);
void          CPL_DLL CPLFinderClean(void);

/* -------------------------------------------------------------------- */
/*      Safe version of stat() that works properly on stuff like "C:".  */
/* -------------------------------------------------------------------- */
int CPL_DLL     CPLStat( const char *, VSIStatBuf * ) CPL_WARN_UNUSED_RESULT;

/* -------------------------------------------------------------------- */
/*      Reference counted file handle manager.  Makes sharing file      */
/*      handles more practical.                                         */
/* -------------------------------------------------------------------- */

/** Information on a shared file */
typedef struct {
    FILE *fp;               /**< File pointer */
    int   nRefCount;        /**< Reference counter */
    int   bLarge;           /**< Whether fp must be interpreted as VSIFILE* */
    char  *pszFilename;     /**< Filename */
    char  *pszAccess;       /**< Access mode */
} CPLSharedFileInfo;

FILE CPL_DLL    *CPLOpenShared( const char *, const char *, int );
void CPL_DLL     CPLCloseShared( FILE * );
CPLSharedFileInfo CPL_DLL *CPLGetSharedList( int * );
void CPL_DLL     CPLDumpSharedList( FILE * );
/*! @cond Doxygen_Suppress */
void CPL_DLL     CPLCleanupSharedFileMutex( void );
/*! @endcond */

/* -------------------------------------------------------------------- */
/*      DMS to Dec to DMS conversion.                                   */
/* -------------------------------------------------------------------- */
double CPL_DLL CPLDMSToDec( const char *is );
const char CPL_DLL *CPLDecToDMS( double dfAngle, const char * pszAxis,
                                 int nPrecision );
double CPL_DLL CPLPackedDMSToDec( double );
double CPL_DLL CPLDecToPackedDMS( double dfDec );

void CPL_DLL CPLStringToComplex( const char *pszString,
                                 double *pdfReal, double *pdfImag );

/* -------------------------------------------------------------------- */
/*      Misc other functions.                                           */
/* -------------------------------------------------------------------- */
int CPL_DLL CPLUnlinkTree( const char * );
int CPL_DLL CPLCopyFile( const char *pszNewPath, const char *pszOldPath );
int CPL_DLL CPLCopyTree( const char *pszNewPath, const char *pszOldPath );
int CPL_DLL CPLMoveFile( const char *pszNewPath, const char *pszOldPath );
int CPL_DLL CPLSymlink( const char* pszOldPath, const char* pszNewPath, char** papszOptions );

/* -------------------------------------------------------------------- */
/*      ZIP Creation.                                                   */
/* -------------------------------------------------------------------- */

/*! @cond Doxygen_Suppress */
#define CPL_ZIP_API_OFFERED
/*! @endcond */
void CPL_DLL  *CPLCreateZip( const char *pszZipFilename, char **papszOptions );
CPLErr CPL_DLL CPLCreateFileInZip( void *hZip, const char *pszFilename,
                                   char **papszOptions );
CPLErr CPL_DLL CPLWriteFileInZip( void *hZip, const void *pBuffer, int nBufferSize );
CPLErr CPL_DLL CPLCloseFileInZip( void *hZip );
CPLErr CPL_DLL CPLCloseZip( void *hZip );

/* -------------------------------------------------------------------- */
/*      ZLib compression                                                */
/* -------------------------------------------------------------------- */

void CPL_DLL *CPLZLibDeflate( const void* ptr, size_t nBytes, int nLevel,
                              void* outptr, size_t nOutAvailableBytes,
                              size_t* pnOutBytes );
void CPL_DLL *CPLZLibInflate( const void* ptr, size_t nBytes,
                              void* outptr, size_t nOutAvailableBytes,
                              size_t* pnOutBytes );

/* -------------------------------------------------------------------- */
/*      XML validation.                                                 */
/* -------------------------------------------------------------------- */
int CPL_DLL CPLValidateXML(const char* pszXMLFilename,
                           const char* pszXSDFilename,
                           char** papszOptions);

/* -------------------------------------------------------------------- */
/*      Locale handling. Prevents parallel executions of setlocale().   */
/* -------------------------------------------------------------------- */
char* CPLsetlocale (int category, const char* locale);
/*! @cond Doxygen_Suppress */
void CPLCleanupSetlocaleMutex(void);
/*! @endcond */

CPL_C_END

/* -------------------------------------------------------------------- */
/*      C++ object for temporarily forcing a LC_NUMERIC locale to "C".  */
/* -------------------------------------------------------------------- */

//! @cond Doxygen_Suppress
#if defined(__cplusplus) && !defined(CPL_SUPRESS_CPLUSPLUS)

class CPL_DLL CPLLocaleC
{
public:
    CPLLocaleC();
    ~CPLLocaleC();

private:
    char *pszOldLocale;

    /* Make it non-copyable */
    CPLLocaleC(const CPLLocaleC&);
    CPLLocaleC& operator=(const CPLLocaleC&);
};

// Does the same as CPLLocaleC except that, when available, it tries to
// only affect the current thread. But code that would be dependent of
// setlocale(LC_NUMERIC, NULL) returning "C", such as current proj.4 versions,
// will not work depending on the actual implementation
class CPL_DLL CPLThreadLocaleC
{
public:
    CPLThreadLocaleC();
    ~CPLThreadLocaleC();

private:
#ifdef HAVE_USELOCALE
    locale_t nNewLocale;
    locale_t nOldLocale;
#else
#if defined(_MSC_VER)
    int   nOldValConfigThreadLocale;
#endif
    char *pszOldLocale;
#endif

    /* Make it non-copyable */
    CPLThreadLocaleC(const CPLThreadLocaleC&);
    CPLThreadLocaleC& operator=(const CPLThreadLocaleC&);
};

#endif /* def __cplusplus */
//! @endcond

#endif /* ndef CPL_CONV_H_INCLUDED */