VFileSystem.cxx
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上传日期:2013-07-25
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- /* ====================================================================
- * The Vovida Software License, Version 1.0
- *
- * Copyright (c) 2000 Vovida Networks, Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. The names "VOCAL", "Vovida Open Communication Application Library",
- * and "Vovida Open Communication Application Library (VOCAL)" must
- * not be used to endorse or promote products derived from this
- * software without prior written permission. For written
- * permission, please contact vocal@vovida.org.
- *
- * 4. Products derived from this software may not be called "VOCAL", nor
- * may "VOCAL" appear in their name, without prior written
- * permission of Vovida Networks, Inc.
- *
- * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND
- * NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL VOVIDA
- * NETWORKS, INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT DAMAGES
- * IN EXCESS OF $1,000, NOR FOR ANY INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
- * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
- * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
- * DAMAGE.
- *
- * ====================================================================
- *
- * This software consists of voluntary contributions made by Vovida
- * Networks, Inc. and many individuals on behalf of Vovida Networks,
- * Inc. For more information on Vovida Networks, Inc., please see
- * <http://www.vovida.org/>.
- *
- */
- static const char* const VFileSystem_cxx_Version =
- "$Id: VFileSystem.cxx,v 1.1 2001/03/30 02:49:21 icahoon Exp $";
- #include <dirent.h>
- #include <errno.h>
- #include <fcntl.h>
- #include <stdio.h>
- #include <sys/stat.h>
- #include <sys/types.h>
- #include <unistd.h>
- #include <utime.h>
- #include "VFileSystem.hxx"
- #include "VIoException.hxx"
- string
- VFileSystem::readFile( const string& fileName )
- throw(VException&)
- {
- FILE* file = fopen( fileName.c_str(), "rb" );
- if ( !file )
- {
- throw VIoException( strerror(errno),
- __FILE__,
- __LINE__,
- errno );
- }
- const int bufSize = 4096;
- char buf[4096];
- string ret;
- while ( !feof(file) )
- {
- int s = fread( buf, sizeof(char), bufSize, file );
- if ( ferror(file) )
- {
- throw VIoException( strerror(errno),
- __FILE__,
- __LINE__,
- errno );
- }
- ret.append(buf, s);
- }
- int err = fclose( file );
- if ( err != 0 )
- {
- throw VIoException( strerror(errno),
- __FILE__ ,
- __LINE__ ,
- errno );
- }
- return ret;
- }
- void
- VFileSystem::writeFile( const string& fileName, const string& data )
- throw(VException&)
- {
- FILE* file = fopen( fileName.c_str(), "wb" );
- if ( !file )
- {
- throw VIoException( strerror(errno),
- __FILE__ ,
- __LINE__ ,
- errno );
- }
- const char* buf = data.c_str();
- unsigned int len = data.length();
- while ( len > 0 )
- {
- int e = fwrite( buf, sizeof(char), len, file );
- buf += e;
- len -= e;
- if ( ferror(file) )
- {
- throw VIoException( strerror(errno),
- __FILE__ ,
- __LINE__ ,
- errno );
- }
- }
- int err = fclose( file );
- if ( err != 0 )
- {
- throw VIoException( strerror(errno),
- __FILE__ ,
- __LINE__ ,
- errno );
- }
- }
- void
- VFileSystem::setFileTime( const string& fileName, TimeStamp time )
- throw(VException&)
- {
- struct utimbuf buf;
- buf.actime = time;
- buf.modtime = time;
- int err = utime(fileName.c_str(), &buf);
- if (err != 0 )
- {
- throw VIoException( strerror(errno),
- __FILE__
- , __LINE__ ,
- errno );
- }
- }
- TimeStamp
- VFileSystem::getFileTime( const string& fileName)
- throw(VException&)
- {
- struct stat buf;
- int err = stat( fileName.c_str(), &buf );
- if ( err != 0 )
- {
- throw VIoException( strerror(errno),
- __FILE__ ,
- __LINE__ ,
- errno );
- }
- time_t t = buf.st_mtime;
- TimeStamp ret = t;
- return ret;
- }
- int
- VFileSystem::getFileSize( const string& fileName)
- throw(VException&)
- {
- struct stat buf;
- int err = stat( fileName.c_str(), &buf );
- if ( err != 0 )
- {
- throw VIoException( strerror(errno),
- __FILE__ ,
- __LINE__ ,
- errno );
- }
- return buf.st_size;
- }
- void
- VFileSystem::removeFile( const string& fileName )
- throw(VException&)
- {
- int err = unlink(fileName.c_str());
- if ( err != 0 )
- {
- throw VIoException( strerror(errno),
- __FILE__ ,
- __LINE__ ,
- errno );
- }
- }
- bool
- VFileSystem::fileExists( const string& fileName )
- throw(VException&)
- {
- struct stat buf;
- int err = stat( fileName.c_str(), &buf );
- if ( err != 0 )
- {
- switch ( errno )
- {
- case EBADF:
- case ENOENT:
- case ENOTDIR:
- return false;
- default:
- {
- throw VIoException( strerror(errno),
- __FILE__,
- __LINE__,
- errno );
- }
- }
- }
- int isFile = S_ISREG(buf.st_mode);
- return isFile;
- }
- void
- VFileSystem::createDir( const string& dirName )
- throw(VException&)
- {
- mode_t mode = 0777;
- int err = mkdir( dirName.c_str(), mode );
- if ( err != 0 )
- {
- switch ( errno )
- {
- case EEXIST:
- break;
- default:
- {
- throw VIoException( strerror(errno),
- __FILE__ ,
- __LINE__ ,
- errno );
- }
- }
- }
- }
- void VFileSystem::removeDir( const string& dirName )
- throw(VException&)
- {
- int err = rmdir(dirName.c_str());
- if ( err != 0 )
- {
- switch ( errno )
- {
- default:
- {
- throw VIoException(strerror(errno)
- , __FILE__ ,
- __LINE__
- , errno );
- }
- }
- }
- }
- bool
- VFileSystem::dirExists( const string& dirName )
- throw(VException&)
- {
- struct stat buf;
- int err = stat( dirName.c_str(), &buf );
- if ( err != 0 )
- {
- switch ( errno )
- {
- case EBADF:
- case ENOENT:
- case ENOTDIR:
- return false;
- default:
- {
- throw VIoException( strerror(errno),
- __FILE__ ,
- __LINE__ ,
- errno );
- }
- }
- }
- int isDir = S_ISDIR(buf.st_mode);
- return isDir;
- }
- StringList
- VFileSystem::readDir( const string& dirName)
- throw(VException&)
- {
- StringList list;
- DIR* dir = opendir(dirName.c_str());
- if ( dir == NULL )
- {
- throw VIoException( strerror(errno),
- __FILE__ ,
- __LINE__ ,
- errno );
- }
- struct dirent * dirp = readdir(dir);
- dirp = readdir(dir); // eat the "."
- dirp = readdir(dir); // eat the ".."
- while ( dirp )
- {
- list.push_back( string(dirp->d_name) );
- dirp = readdir(dir);
- }
- int err = closedir(dir);
- if ( err != 0 )
- {
- throw VIoException( strerror(errno),
- __FILE__ ,
- __LINE__ ,
- errno );
- }
- return list;
- }