UDirectory.cpp
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00001 // Taken from UtiLite library r266 [www.utilite.googlecode.com]
00002 
00003 /*
00004 *  utilite is a cross-platform library with
00005 *  useful utilities for fast and small developing.
00006 *  Copyright (C) 2010  Mathieu Labbe
00007 *
00008 *  utilite is free library: you can redistribute it and/or modify
00009 *  it under the terms of the GNU Lesser General Public License as published by
00010 *  the Free Software Foundation, either version 3 of the License, or
00011 *  (at your option) any later version.
00012 *
00013 *  utilite is distributed in the hope that it will be useful,
00014 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
00015 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00016 *  GNU Lesser General Public License for more details.
00017 *
00018 *  You should have received a copy of the GNU Lesser General Public License
00019 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
00020 */
00021 
00022 #include "utilite/UDirectory.h"
00023 
00024 #ifdef WIN32
00025   #include <Windows.h>
00026   #include <direct.h>
00027   #include <algorithm>
00028   #include <conio.h>
00029 #else
00030   #include <dirent.h>
00031   #include <sys/stat.h>
00032   #include <sys/types.h>
00033   #include <sys/param.h>
00034   #include <sys/dir.h>
00035   #include <unistd.h>
00036   #include <stdlib.h>
00037   #include <string.h>
00038 #endif
00039 
00040 #include "utilite/UStl.h"
00041 #include "utilite/UFile.h"
00042 #include "utilite/UDirectory.h"
00043 #include "utilite/UConversion.h"
00044 
00045 #ifdef WIN32
00046 
00047 bool sortCallback(const std::string & a, const std::string & b)
00048 {
00049         return uStrNumCmp(a,b) < 0;
00050 }
00051 #elif __APPLE__
00052 int sortCallback(const struct dirent ** a, const struct dirent ** b)
00053 {
00054         return uStrNumCmp((*a)->d_name, (*b)->d_name);
00055 }
00056 #else
00057 int sortCallback( const dirent ** a,  const dirent ** b)
00058 {
00059         return uStrNumCmp((*a)->d_name, (*b)->d_name);
00060 }
00061 #endif
00062 
00063 UDirectory::UDirectory(const std::string & path, const std::string & extensions)
00064 {
00065         extensions_ = uListToVector(uSplit(extensions, ' '));
00066         path_ = path;
00067         iFileName_ = fileNames_.begin();
00068         this->update();
00069 }
00070 
00071 UDirectory::UDirectory(const UDirectory & dir)
00072 {
00073         *this = dir;
00074 }
00075 
00076 UDirectory & UDirectory::operator=(const UDirectory & dir)
00077 {
00078         extensions_ = dir.extensions_;
00079         path_ = dir.path_;
00080         fileNames_ = dir.fileNames_;
00081         for(iFileName_=fileNames_.begin(); iFileName_!=fileNames_.end(); ++iFileName_)
00082         {
00083                 if(iFileName_->compare(*dir.iFileName_) == 0)
00084                 {
00085                         break;
00086                 }
00087         }
00088         return *this;
00089 }
00090 
00091 UDirectory::~UDirectory()
00092 {
00093 }
00094 
00095 void UDirectory::setPath(const std::string & path, const std::string & extensions)
00096 {
00097         extensions_ = uListToVector(uSplit(extensions, ' '));
00098         path_ = path;
00099         fileNames_.clear();
00100         iFileName_ = fileNames_.begin();
00101         this->update();
00102 }
00103 
00104 void UDirectory::update()
00105 {
00106         if(exists(path_))
00107         {
00108                 std::string lastName;
00109                 bool endOfDir = false;
00110                 if(iFileName_ != fileNames_.end())
00111                 {
00112                         //Record the last file name
00113                         lastName = *iFileName_;
00114                 }
00115                 else if(fileNames_.size())
00116                 {
00117                         lastName = *fileNames_.rbegin();
00118                         endOfDir = true;
00119                 }
00120                 fileNames_.clear();
00121 #ifdef WIN32
00122                 WIN32_FIND_DATA fileInformation;
00123         #ifdef UNICODE
00124                 wchar_t * pathAll = createWCharFromChar((path_+"\\*").c_str());
00125                 HANDLE hFile  = ::FindFirstFile(pathAll, &fileInformation);
00126                 delete [] pathAll;
00127         #else
00128                 HANDLE hFile  = ::FindFirstFile((path_+"\\*").c_str(), &fileInformation);
00129         #endif
00130                 if(hFile != INVALID_HANDLE_VALUE)
00131                 {
00132                         do
00133                         {
00134         #ifdef UNICODE
00135                                 char * fileName = createCharFromWChar(fileInformation.cFileName);
00136                                 fileNames_.push_back(fileName);
00137                                 delete [] fileName;
00138         #else
00139                                 fileNames_.push_back(fileInformation.cFileName);
00140         #endif
00141                         } while(::FindNextFile(hFile, &fileInformation) == TRUE);
00142                         ::FindClose(hFile);
00143                         std::vector<std::string> vFileNames = uListToVector(fileNames_);
00144                         std::sort(vFileNames.begin(), vFileNames.end(), sortCallback);
00145                         fileNames_ = uVectorToList(vFileNames);
00146                 }
00147 #else
00148                 int nameListSize;
00149                 struct dirent ** nameList = 0;
00150                 nameListSize =  scandir(path_.c_str(), &nameList, 0, sortCallback);
00151                 if(nameList && nameListSize>0)
00152                 {
00153                         for (int i=0;i<nameListSize;++i)
00154                         {
00155                                 fileNames_.push_back(nameList[i]->d_name);
00156                                 free(nameList[i]);
00157                         }
00158                         free(nameList);
00159                 }
00160 #endif
00161 
00162                 //filter extensions...
00163                 std::list<std::string>::iterator iter = fileNames_.begin();
00164                 bool valid;
00165                 while(iter!=fileNames_.end())
00166                 {
00167                         valid = false;
00168                         if(extensions_.size() == 0 &&
00169                            iter->compare(".") != 0 &&
00170                            iter->compare("..") != 0)
00171                         {
00172                                 valid = true;
00173                         }
00174                         for(unsigned int i=0; i<extensions_.size(); ++i)
00175                         {
00176                                 if(UFile::getExtension(*iter).compare(extensions_[i]) == 0)
00177                                 {
00178                                         valid = true;
00179                                         break;
00180                                 }
00181                         }
00182                         if(!valid)
00183                         {
00184                                 iter = fileNames_.erase(iter);
00185                         }
00186                         else
00187                         {
00188                                 ++iter;
00189                         }
00190                 }
00191                 iFileName_ = fileNames_.begin();
00192                 if(!lastName.empty())
00193                 {
00194                         bool found = false;
00195                         for(std::list<std::string>::iterator iter=fileNames_.begin(); iter!=fileNames_.end(); ++iter)
00196                         {
00197                                 if(lastName.compare(*iter) == 0)
00198                                 {
00199                                         found = true;
00200                                         iFileName_ = iter;
00201                                         break;
00202                                 }
00203                         }
00204                         if(endOfDir && found)
00205                         {
00206                                 ++iFileName_;
00207                         }
00208                         else if(endOfDir && fileNames_.size())
00209                         {
00210                                 iFileName_ = --fileNames_.end();
00211                         }
00212                 }
00213         }
00214 }
00215 
00216 bool UDirectory::isValid()
00217 {
00218         return exists(path_);
00219 }
00220 
00221 std::string UDirectory::getNextFileName()
00222 {
00223         std::string fileName;
00224         if(iFileName_ != fileNames_.end())
00225         {
00226                 fileName = *iFileName_;
00227                 ++iFileName_;
00228         }
00229         return fileName;
00230 }
00231 
00232 void UDirectory::rewind()
00233 {
00234         iFileName_ = fileNames_.begin();
00235 }
00236 
00237 
00238 bool UDirectory::exists(const std::string & dirPath)
00239 {
00240         bool r = false;
00241 #if WIN32
00242         #ifdef UNICODE
00243         wchar_t * wDirPath = createWCharFromChar(dirPath.c_str());
00244         DWORD dwAttrib = GetFileAttributes(wDirPath);
00245         delete [] wDirPath;
00246         #else
00247         DWORD dwAttrib = GetFileAttributes(dirPath.c_str());
00248         #endif
00249         r = (dwAttrib != INVALID_FILE_ATTRIBUTES && (dwAttrib & FILE_ATTRIBUTE_DIRECTORY));
00250 #else
00251         DIR *dp;
00252         if((dp  = opendir(dirPath.c_str())) != NULL)
00253         {
00254                 r = true;
00255                 closedir(dp);
00256         }
00257 #endif
00258         return r;
00259 }
00260 
00261 // return the directory path of the file
00262 std::string UDirectory::getDir(const std::string & filePath)
00263 {
00264         std::string dir = filePath;
00265         int i=dir.size()-1;
00266         for(; i>=0; --i)
00267         {
00268                 if(dir[i] == '/' || dir[i] == '\\')
00269                 {
00270                         //remove separators...
00271                         dir[i] = 0;
00272                         --i;
00273                         while(i>=0 && (dir[i] == '/' || dir[i] == '\\'))
00274                         {
00275                                 dir[i] = 0;
00276                                 --i;
00277                         }
00278                         break;
00279                 }
00280                 else
00281                 {
00282                         dir[i] = 0;
00283                 }
00284         }
00285 
00286         if(i<0)
00287         {
00288                 dir = ".";
00289         }
00290         else
00291         {
00292                 dir.resize(i+1);
00293         }
00294 
00295         return dir;
00296 }
00297 
00298 std::string UDirectory::currentDir(bool trailingSeparator)
00299 {
00300         std::string dir;
00301         char * buffer;
00302 
00303 #ifdef WIN32
00304         buffer = _getcwd(NULL, 0);
00305 #else
00306         buffer = getcwd(NULL, MAXPATHLEN);
00307 #endif
00308 
00309         if( buffer != NULL )
00310         {
00311                 dir = buffer;
00312                 free(buffer);
00313                 if(trailingSeparator)
00314                 {
00315                         dir += separator();
00316                 }
00317         }
00318 
00319         return dir;
00320 }
00321 
00322 bool UDirectory::makeDir(const std::string & dirPath)
00323 {
00324         int status;
00325 #if WIN32
00326         status = _mkdir(dirPath.c_str());
00327 #else
00328         status = mkdir(dirPath.c_str(), S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH);
00329 #endif
00330         return status==0;
00331 }
00332 
00333 bool UDirectory::removeDir(const std::string & dirPath)
00334 {
00335         int status;
00336 #if WIN32
00337         status = _rmdir(dirPath.c_str());
00338 #else
00339         status = rmdir(dirPath.c_str());
00340 #endif
00341         return status==0;
00342 }
00343 
00344 std::string UDirectory::homeDir()
00345 {
00346         std::string path;
00347 #if WIN32
00348         #ifdef UNICODE
00349         wchar_t wProfilePath[250];
00350         ExpandEnvironmentStrings(L"%userprofile%",wProfilePath,250);
00351         char * profilePath = createCharFromWChar(wProfilePath);
00352         path = profilePath;
00353         delete [] profilePath;
00354         #else
00355         char profilePath[250];
00356         ExpandEnvironmentStrings("%userprofile%",profilePath,250);
00357         path = profilePath;
00358         #endif
00359 #else
00360         path = getenv("HOME");
00361 #endif
00362         return path;
00363 }
00364 
00365 std::string UDirectory::separator()
00366 {
00367 #ifdef WIN32
00368         return "\\";
00369 #else
00370         return "/";
00371 #endif
00372 }


find_object_2d
Author(s): Mathieu Labbe
autogenerated on Thu Aug 27 2015 13:00:33