libH/UtilFile.cpp

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/*
  
  Copyright (c) 2007, Tim Burrell
  Licensed under the Apache License, Version 2.0 (the "License");
  you may not use this file except in compliance with the License.
  You may obtain a copy of the License at 

        http://www.apache.org/licenses/LICENSE-2.0

  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and 
  limitations under the License. 
  
*/

#include "UtilFile.hpp"
#include "Debug.hpp"
#include <fstream>
#include <sys/stat.h>
#include <sys/types.h>
#include <stdio.h>
#include <stddef.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#ifndef WIN32
        #include <dirent.h>
        #include <unistd.h>
#else
        #include <Windows.h>
        #include <shlobj.h>
#endif
#include <fcntl.h>
#include <time.h>

using namespace H;
using namespace std;

// Defines / Type Defs

#ifdef WIN32
        #define DIRCHAR         '\\'
        #define DIRSTR          "\\"
#else
        #define DIRCHAR         '/'
        #define DIRSTR          "/"
#endif

// Construction / Deconstruction

UtilFile::UtilFile() {
}

UtilFile::~UtilFile() {
}

// Class Body

bool UtilFile::createDirectory(std::string const & FileName) {
#ifndef WIN32
        if (mkdir(FileName.c_str(), 0755) == -1)
                return false;
        else
                return true;
#else
        return CreateDirectory(FileName, NULL) != 0;
#endif
}

void UtilFile::relativeToAbsolute(std::string & FilePath) {
        size_t tPos;
        if ((tPos = FilePath.find("~" DIRSTR)) == string::npos)
                return;         
        const char * home = getenv("HOME");
        if (!home)
                return;
        FilePath = FilePath.substr(0, tPos) + home + DIRSTR + FilePath.substr(2);
}

bool UtilFile::touch(std::string const & FilePath) {
        // check if it's a directory
        if (FilePath[FilePath.length() - 1] == DIRCHAR) {
                // create a dir
                return createDirectory(FilePath);
        } else {
                // create a file
                ofstream oFile(FilePath.c_str(), ios::app);
                if (!oFile.is_open())
                        return false;
                return true;
        }
}

bool UtilFile::touchRecursive(std::string const & FilePath, bool DoRecursive) { 
        // let's try to create it!
        if (touch(FilePath))
                return true;            
        // recursion requested?
        if (!DoRecursive)
                return false;
        
        // if still no go break it down into smaller pieces
        string strFilePath = FilePath;
        int Modifier = 0;
        if (strFilePath[strFilePath.length() - 1] == DIRCHAR)
                Modifier = 1;
        size_t sPos = strFilePath.rfind(DIRSTR, strFilePath.length() - Modifier - 1);
        if (sPos == string::npos)
                return touch(FilePath);
                        
        string SubLevel = strFilePath.substr(0, sPos + 1);
        if (!touchRecursive(SubLevel, true))
                return false;
                
        return touch(FilePath);
}

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