www.pudn.com > mitab.rar > cpl_dir.cpp

/********************************************************************** 
 * $Id: cpl_dir.cpp,v 1.5 2002/03/28 14:52:32 warmerda Exp $ 
 * 
 * Name:     cpl_dir.cpp 
 * Project:  CPL - Common Portability Library 
 * Purpose:  Directory manipulation. 
 * Author:   Daniel Morissette, danmo@videotron.ca 
 * 
 ********************************************************************** 
 * Copyright (c) 1998, Daniel Morissette 
 * 
 * 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. 
 ********************************************************************** 
 * 
 * $Log: cpl_dir.cpp,v $ 
 * Revision 1.5  2002/03/28 14:52:32  warmerda 
 * moved docs to non-WIN32 section 
 * 
 * Revision 1.4  2001/07/18 04:00:49  warmerda 
 * added CPL_CVSID 
 * 
 * Revision 1.3  2000/09/25 19:59:03  warmerda 
 * look for WIN32 not _WIN32 
 * 
 * Revision 1.2  1999/05/20 02:54:38  warmerda 
 * Added API documentation 
 * 
 * Revision 1.1  1999/02/25 04:52:00  danmo 
 * *** empty log message *** 
 * 
 **********************************************************************/ 
 
#include "cpl_conv.h" 
#include "cpl_string.h" 
 
CPL_CVSID("$Id: cpl_dir.cpp,v 1.5 2002/03/28 14:52:32 warmerda Exp $"); 
 
#ifdef WIN32 
 
/*===================================================================== 
                   WIN32 / MSVC++ implementation 
 *====================================================================*/ 
 
#include  
 
/********************************************************************** 
 *                          CPLReadDir() 
 * 
 * Return a stringlist with the list of files in a directory. 
 * The returned stringlist should be freed with CSLDestroy(). 
 * 
 * Returns NULL if an error happened or if the directory could not 
 * be read. 
 **********************************************************************/ 
 
char **CPLReadDir(const char *pszPath) 
{ 
    struct _finddata_t c_file; 
    long    hFile; 
    char    *pszFileSpec, **papszDir = NULL; 
 
    if (strlen(pszPath) == 0) 
        pszPath = "."; 
 
    pszFileSpec = CPLStrdup(CPLSPrintf("%s\\*.*", pszPath)); 
 
    if ( (hFile = _findfirst( pszFileSpec, &c_file )) != -1L ) 
    { 
        do 
        { 
            papszDir = CSLAddString(papszDir, c_file.name); 
        } while( _findnext( hFile, &c_file ) == 0 ); 
 
        _findclose( hFile ); 
    } 
    else 
    { 
        /* Should we generate an error???   
         * For now we'll just return NULL (at the end of the function) 
         */ 
    } 
 
    CPLFree(pszFileSpec); 
 
    return papszDir; 
} 
 
#else 
 
/*===================================================================== 
                      POSIX (Unix) implementation 
 *====================================================================*/ 
 
#include  
#include  
 
/********************************************************************** 
 *                          CPLReadDir() 
 * 
 * Return a stringlist with the list of files in a directory. 
 * The returned stringlist should be freed with CSLDestroy(). 
 * 
 * Returns NULL if an error happened or if the directory could not 
 * be read. 
 **********************************************************************/ 
 
/** 
 * Read names in a directory. 
 * 
 * This function abstracts access to directory contains.  It returns a 
 * list of strings containing the names of files, and directories in this 
 * directory.  The resulting string list becomes the responsibility of the 
 * application and should be freed with CSLDestroy() when no longer needed. 
 * 
 * Note that no error is issued via CPLError() if the directory path is 
 * invalid, though NULL is returned. 
 * 
 * @param pszPath the relative, or absolute path of a directory to read. 
 * @return The list of entries in the directory, or NULL if the directory 
 * doesn't exist. 
 */ 
 
char **CPLReadDir(const char *pszPath) 
{ 
    DIR           *hDir; 
    struct dirent *psDirEntry; 
    char          **papszDir = NULL; 
 
    if (strlen(pszPath) == 0) 
        pszPath = "."; 
 
    if ( (hDir = opendir(pszPath)) != NULL ) 
    { 
        while( (psDirEntry = readdir(hDir)) != NULL ) 
        { 
            papszDir = CSLAddString(papszDir, psDirEntry->d_name); 
        } 
 
        closedir( hDir ); 
    } 
    else 
    { 
        /* Should we generate an error???   
         * For now we'll just return NULL (at the end of the function) 
         */ 
    } 
 
    return papszDir; 
} 
 
#endif