From: jean-pierre roux <jean-pierre.roux@creatis.insa-lyon.fr>
Date: Tue, 25 Nov 2008 13:15:57 +0000 (+0000)
Subject: Class to return names of the files within a directory (recursive exploration or
X-Git-Tag: v0.2.0~21
X-Git-Url: https://git.creatis.insa-lyon.fr/pubgit/?a=commitdiff_plain;h=ba499d06876469f701625fd801256652b3f591d9;p=crea.git

Class to return names of the files within a directory (recursive exploration or
not)
---

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 27b0750..c39fd66 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -28,6 +28,7 @@ SET( SRCS
   creaRTTI
   creawxVTKRenderWindowInteractor
   creaVtkBasicSlicer
+  creaFilesFromDirectory
   )
 
 
diff --git a/src/creaFilesFromDirectory.cxx b/src/creaFilesFromDirectory.cxx
new file mode 100644
index 0000000..2d9f215
--- /dev/null
+++ b/src/creaFilesFromDirectory.cxx
@@ -0,0 +1,168 @@
+/*=========================================================================
+                                                                                
+  Program:   crea
+  Module:    $RCSfile: creaFilesFromDirectory.cxx,v $
+  Language:  C++
+  Date:      $Date: 2008/11/25 13:15:57 $
+  Version:   $Revision: 1.1 $
+                                                                                
+  Copyright (c) CREATIS (Centre de Recherche et d'Applications en Traitement de
+  l'Image). All rights reserved. See Doc/License.txt or
+  http://www.creatis.insa-lyon.fr/Public/crea/License.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 notices for more information.
+                                                                                
+=========================================================================*/
+
+
+/**
+ *  \file 
+ *  \brief  class Exception:generic class for throwing any exception (header) 
+ *
+ *    Long description:
+ */
+#ifdef _MSC_VER
+   #include <windows.h>
+   #include <direct.h>
+#else
+   #include <dirent.h>   
+   #include <sys/types.h>
+#endif
+
+#include <sys/stat.h>  //stat function
+
+ #include "creaFilesFromDirectory.h"
+
+namespace crea
+{ 
+
+/**
+ * \brief   Add a SEPARATOR to the end of the name if necessary
+ * @param   pathname file/directory name to normalize 
+ */
+std::string DirList::NormalizePath(std::string const &pathname)
+{
+
+
+#ifdef _WIN32
+   const char FILESEPARATOR = '\\;
+#else
+   const char FILESEPARATOR = '/';
+#endif
+
+   std::string name = pathname;
+   int size = name.size();
+
+//   if ( name[size-1] != SEPARATOR_X && name[size-1] != SEPARATOR_WIN )
+   if ( name[size-1] != FILESEPARATOR )
+   {
+      name += FILESEPARATOR;
+   }
+   return name;
+}  
+/**
+ * \brief   Explore a directory with possibility of recursion
+ *          return number of files read
+ * @param  dirpath   directory to explore
+ * @param  recursive whether we want recursion or not
+ */
+int DirList::Explore(std::string const &dirpath, bool recursive)
+{
+   int numberOfFiles = 0;
+   std::string fileName;
+   std::string dirName = NormalizePath(dirpath);
+#ifdef _MSC_VER
+   WIN32_FIND_DATA fileData;
+   //assert( dirName[dirName.size()-1] == '' );
+   HANDLE hFile = FindFirstFile((dirName+"*").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 != ".." && recursive )
+         {
+            numberOfFiles += Explore(dirName+fileName,recursive);
+         }
+      }
+      else
+      {
+         Filenames.push_back(dirName+fileName);
+         numberOfFiles++;
+      }
+   }
+   DWORD dwError = GetLastError();
+   if (hFile != INVALID_HANDLE_VALUE) 
+      FindClose(hFile);
+   if (dwError != ERROR_NO_MORE_FILES) 
+   {
+      LPVOID lpMsgBuf;
+      FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER|
+                    FORMAT_MESSAGE_FROM_SYSTEM|
+                    FORMAT_MESSAGE_IGNORE_INSERTS,
+                    NULL,GetLastError(),
+                    MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
+                    (LPTSTR) &lpMsgBuf,0,NULL);
+
+      gdcmErrorMacro("FindNextFile error. Error is " << (char *)lpMsgBuf
+                   <<" for the directory : "<<dirName);
+      return -1;
+   }
+
+#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)
+   {
+      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;
+   for (d = readdir(dir); d; d = readdir(dir))
+   {
+      fileName = dirName + d->d_name;
+      if( stat(fileName.c_str(), &buf) != 0 )
+      {
+         //gdcmErrorMacro( strerror(errno) );
+      }
+      if ( S_ISREG(buf.st_mode) )    //is it a regular file?
+      {
+         Filenames.push_back( fileName );
+         numberOfFiles++;
+      }
+      else if ( S_ISDIR(buf.st_mode) ) //directory?
+      {
+         if ( d->d_name[0] != '.' && recursive ) //we also skip hidden files
+         {
+            numberOfFiles += Explore( fileName, recursive);
+         }
+      }
+      else
+      {
+         //gdcmErrorMacro( "Unexpected error" );
+         return -1;
+      }
+   }
+   if( closedir(dir) != 0 )
+   {
+      //gdcmErrorMacro( strerror(errno) );
+   }
+#endif
+
+  return numberOfFiles;
+}
+
+}
diff --git a/src/creaFilesFromDirectory.h b/src/creaFilesFromDirectory.h
new file mode 100644
index 0000000..6b9bd7a
--- /dev/null
+++ b/src/creaFilesFromDirectory.h
@@ -0,0 +1,47 @@
+#ifndef _crea_DIRLIST_H_
+#define _crea_DIRLIST_H_
+   
+
+
+#include <string>
+#include <vector>
+#include <iostream>
+
+namespace crea
+{
+class  DirList
+{
+public :
+   DirList(std::string const &dirName, bool recursive);
+   ~DirList();
+
+
+   std::string NormalizePath(std::string const &pathname); 
+
+   /// Return the name of the directory
+   std::string const &GetDirName() const { return DirName; }
+
+   /// Return the file names
+   std::vector<std::string> const &GetFilenames() const { return Filenames; }
+
+    /// Return the number of Files
+   int GetSize() const { return Filenames.size(); }  
+
+   static bool IsDirectory(std::string const &dirName);
+
+   std::string GetFirst();
+   std::string GetNext();
+
+private :
+   int Explore(std::string const &dirName, bool recursive=false);
+
+   /// List of file names
+   std::vector<std::string> Filenames;
+   /// name of the root directory to explore
+   std::string DirName;
+
+};
+
+}
+
+#endif