/*
 * CCFileUtilsLinux.cpp
 *
 *  Created on: Aug 9, 2011
 *      Author: laschweinski
 */
#include "CCFileUtilsLinux.h"
#include "platform/CCCommon.h"
#include "ccMacros.h"
#include "CCApplication.h"
#include "cocoa/CCString.h"
#include <unistd.h>
#include <sys/stat.h>
#include <stdio.h>
#include <errno.h>

using namespace std;

NS_CC_BEGIN

CCFileUtils* CCFileUtils::sharedFileUtils()
{
    if (s_sharedFileUtils == NULL)
    {
        s_sharedFileUtils = new CCFileUtilsLinux();
        s_sharedFileUtils->init();
    }
    return s_sharedFileUtils;
}

CCFileUtilsLinux::CCFileUtilsLinux()
{}

bool CCFileUtilsLinux::init()
{
    // get application path
    char fullpath[256] = {0};
    ssize_t length = readlink("/proc/self/exe", fullpath, sizeof(fullpath)-1);

    if (length <= 0) {
        return false;
    }

    fullpath[length] = '\0';
    std::string resourcePath = fullpath;
    resourcePath = resourcePath.substr(0, resourcePath.find_last_of("/"));
    resourcePath += "/../../../Resources/";
    m_strDefaultResRootPath = resourcePath;

    return CCFileUtils::init();
}

string CCFileUtilsLinux::getWritablePath()
{
    //return current resource path
    return m_strDefaultResRootPath;
}

bool CCFileUtilsLinux::isFileExist(const std::string& strFilePath)
{
    std::string strPath = strFilePath;
    if (!isAbsolutePath(strPath))
    { // Not absolute path, add the default root path at the beginning.
        strPath.insert(0, m_strDefaultResRootPath);
    }
    
    struct stat sts;
    return (stat(strPath.c_str(), &sts) != -1) ? true : false;
}

NS_CC_END