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/*=========================================================================
Program: GDCM (Grassroots DICOM). A DICOM library
Copyright (c) 2006-2011 Mathieu Malaterre
All rights reserved.
See Copyright.txt or http://gdcm.sourceforge.net/Copyright.html for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
#include "gdcmDirectory.h"
#include "gdcmTrace.h"
#include <iterator>
#include <assert.h>
#include <errno.h>
#include <sys/stat.h> //stat function
#include <string.h> // strerror
#ifdef _MSC_VER
#include <windows.h>
#include <direct.h>
#else
#include <dirent.h>
#include <sys/types.h>
#endif
namespace gdcm
{
unsigned int Directory::Explore(FilenameType const &name, bool recursive)
{
unsigned int nFiles = 0;
std::string fileName;
std::string dirName = name;
//assert( System::FileIsDirectory( dirName ) );
Directories.push_back( dirName );
#ifdef _MSC_VER
WIN32_FIND_DATA fileData;
dirName.append("/");
assert( dirName[dirName.size()-1] == '/' );
const FilenameType firstfile = dirName+"*";
HANDLE hFile = FindFirstFile(firstfile.c_str(), &fileData);
for(BOOL b = (hFile != INVALID_HANDLE_VALUE); b;
b = FindNextFile(hFile, &fileData))
{
fileName = fileData.cFileName;
if ( fileData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY )
{
// Need to check for . and .. to avoid infinite loop
if ( fileName != "." && fileName != ".."
&& fileName[0] != '.' // discard any hidden dir
&& recursive )
{
nFiles += Explore(dirName+fileName,recursive);
}
}
else
{
Filenames.push_back(dirName+fileName);
nFiles++;
}
}
DWORD dwError = GetLastError();
if (hFile != INVALID_HANDLE_VALUE) FindClose(hFile);
if (dwError != ERROR_NO_MORE_FILES)
{
//gdcmErrorMacro("FindNextFile error. Error is " << dwError);
return 0;
}
#else
// Real POSIX implementation: scandir is a BSD extension only, and doesn't
// work on debian for example
DIR* dir = opendir(dirName.c_str());
if (!dir)
{
const char *str = strerror(errno); (void)str;
gdcmErrorMacro( "Error was: " << str << " when opening directory: " << dirName );
return 0;
}
// According to POSIX, the dirent structure contains a field char d_name[]
// of unspecified size, with at most NAME_MAX characters preceeding the
// terminating null character. Use of other fields will harm the porta-
// bility of your programs.
struct stat buf;
dirent *d;
dirName.append("/");
assert( dirName[dirName.size()-1] == '/' );
for (d = readdir(dir); d; d = readdir(dir))
{
fileName = dirName + d->d_name;
if( stat(fileName.c_str(), &buf) != 0 )
{
const char *str = strerror(errno); (void)str;
gdcmErrorMacro( "Last Error was: " << str << " for file: " << fileName );
break;
}
if ( S_ISREG(buf.st_mode) ) //is it a regular file?
{
if( d->d_name[0] != '.' )
{
Filenames.push_back( fileName );
nFiles++;
}
}
else if ( S_ISDIR(buf.st_mode) ) //directory?
{
// discard . and ..
if( strcmp( d->d_name, "." ) == 0
|| strcmp( d->d_name, ".." ) == 0
|| d->d_name[0] == '.' ) // discard any hidden dir
continue;
assert( d->d_name[0] != '.' ); // hidden directory ??
if ( recursive )
{
nFiles += Explore( fileName, recursive);
}
}
else
{
gdcmErrorMacro( "Unexpected type for file: " << fileName );
break;
}
}
if( closedir(dir) != 0 )
{
const char *str = strerror(errno); (void)str;
gdcmErrorMacro( "Last error was: " << str << " when closing directory: " << fileName );
}
#endif
return nFiles;
}
void Directory::Print(std::ostream &_os) const
{
// FIXME Both structures are FilenamesType I could factorize the code
_os << "Directories: ";
if( Directories.empty() )
_os << "(None)" << std::endl;
else
{
std::copy(Directories.begin(), Directories.end(),
std::ostream_iterator<std::string>(_os << std::endl, "\n"));
}
_os << "Filenames: ";
if( Filenames.empty() )
_os << "(None)" << std::endl;
else
{
std::copy(Filenames.begin(), Filenames.end(),
std::ostream_iterator<std::string>(_os << std::endl, "\n"));
}
}
} // end namespace gdcm
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