/* 
 * $Id: Utilities.cpp,v 1.9 2005/10/19 14:05:44 ozawa Exp $
 *
 * Copyright 2005- ONGS Inc. All rights reserved.
 * 
 * author: Masanori OZAWA (ozawa@ongs.co.jp)
 * version: $Revision: 1.9 $
 *
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions
 * are met:
 * 
 *   1. Redistributions of source code must retain the above copyright
 *      notice, this list of conditions and the following disclaimer.
 *   2. Redistributions in binary form must reproduce the above copyright
 *      notice, this list of conditions and the following disclaimer in the
 *      documentation and/or other materials provided with the distribution.
 * 
 * THIS SOFTWARE IS PROVIDED BY ONGS INC ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL ONGS INC OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 * 
 * The views and conclusions contained in the software and documentation are
 * those of the authors and should not be interpreted as representing official
 * policies, either expressed or implied, of the ONGS Inc.
 * 
 */

#include "Utilities.h"

#include <stdio.h>
#include <fcntl.h>

using namespace XDTP;

Utilities::Utilities()
{
}

Utilities::~Utilities()
{
}

bool Utilities::copy(const Glib::ustring& in, const Glib::ustring& out)
{
    int ofd = open(out.c_str(), O_CREAT | O_WRONLY | O_EXLOCK, 0640);
    
    if (0 > ofd) return false;
    
    bool result = copy(in, ofd);
    
    close(ofd);
    
    return result;
}

bool Utilities::copy(const Glib::ustring& in, int out)
{
    int ifd = open(in.c_str(), O_RDONLY);
    
    if (0 > ifd) return false;
    
    int len = -1;
    char buf[4096] = {0};
    
    while (len = read(ifd, buf, sizeof(buf)), 0 < len) {
        if (len != write(out, buf, len)) {
            len = -1;
            break;
        }
    }
    
    close(ifd);
    
    return (0 == len);
}

bool Utilities::move(const Glib::ustring& in, const Glib::ustring& out)
{
    if (!rename(in.c_str(), out.c_str())) {
        return true;
    }
    
    if (copy(in, out)) {
        return (0 == remove(in.c_str()));
    }
    
    return false;
}

bool Utilities::printFile(const Glib::ustring& file)
{
    size_t len = 0;
    char buf[4096] = {0};
    FILE* fp = fopen(file.c_str(), "r");
    
    if (!fp) return false;
    
    while (len = fread(buf, 1, sizeof(buf), fp), 0 < len) {
        if (len != fwrite(buf, 1, len, stdout)) {
            break;
        }
    }
    
    fclose(fp);
    
    return (0 == len);
}

Glib::ustring Utilities::strTrim(const Glib::ustring& szSrc)
{
    return strTrimRight(strTrimLeft(szSrc));
}

/**
 * 文字列の前の空白を除去します。
 * 
 * @param szSrc 除去する前の文字列
 * @return 前の空白を除去した文字列
 */
Glib::ustring Utilities::strTrimLeft(const Glib::ustring& szSrc)
{
    size_t firstPos = szSrc.find_first_not_of(" \t\r\n");
    size_t length = szSrc.length();

    if (0 > firstPos) firstPos = 0;
    else if (length < firstPos) firstPos = length;

    return szSrc.substr(firstPos);
}

/**
 * 文字列の後の空白を除去します。
 * 
 * @param szSrc 除去する前の文字列
 * @return 後の空白を除去した文字列
 */
Glib::ustring Utilities::strTrimRight(const Glib::ustring& szSrc)
{
    size_t lastPos = szSrc.find_last_not_of(" \t\r\n");
    size_t length = szSrc.length();

    if (0 > lastPos) lastPos = length;
    else if (length <= lastPos) lastPos = length -1;

    return szSrc.substr(0, lastPos +1);
}

/**
 * 文字列の終端にある改行コードを除去します。
 * 
 * @param szSrc 除去する前の文字列
 * @return 後の改行コードを除去した文字列
 */
Glib::ustring Utilities::strTrimCRLF(const Glib::ustring& szSrc)
{
    size_t lastPos = szSrc.find_last_not_of("\r\n");
    size_t length = szSrc.length();

    if (0 > lastPos) lastPos = length;
    else if (length <= lastPos) lastPos = length -1;

    return szSrc.substr(0, lastPos +1);
}

/**
 * 指定の文字列を全て置換します。
 *
 * @param szSrc 元の文字列
 * @param szOld 置換対象の文字列
 * @param szNew 置き換える文字列
 */
Glib::ustring Utilities::strReplaceAll(const Glib::ustring& szSrc,
                                       const Glib::ustring& szOld,
                                       const Glib::ustring& szNew)
{
    Glib::ustring result = szSrc;
    Glib::ustring::size_type pos;
    Glib::ustring::size_type oldlen = szOld.length();
    Glib::ustring::size_type newlen = szNew.length();
    
    for (pos = result.find(szOld);
        Glib::ustring::npos != pos;
        pos = result.find(szOld, pos))
    {
        result = result.replace(pos, oldlen, szNew);
        pos += newlen;
    }
    
    return result;
}