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# TextReader.cpp

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    00001 //------------------------------------------------------------------------------
    00002 // Lamp : Open source game middleware
    00003 // Copyright (C) 2004  Junpei Ohtani ( Email : junpee@users.sourceforge.jp )
    00004 //
    00005 // This library is free software; you can redistribute it and/or
    00006 // modify it under the terms of the GNU Lesser General Public
    00007 // License as published by the Free Software Foundation; either
    00008 // version 2.1 of the License, or (at your option) any later version.
    00009 //
    00010 // This library is distributed in the hope that it will be useful,
    00011 // but WITHOUT ANY WARRANTY; without even the implied warranty of
    00012 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    00013 // Lesser General Public License for more details.
    00014 //
    00015 // You should have received a copy of the GNU Lesser General Public
    00016 // License along with this library; if not, write to the Free Software
    00017 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
    00018 //------------------------------------------------------------------------------
    00019
    00020 /** @file
    00021  * テキストリーダ実装
    00022  * @author Junpee
    00023  */
    00024
    00025 #include "LampBasic.h"
    00026 #include "Core/InputOutput/TextReader.h"
    00027 #include "Core/System/StringMethod.h"
    00028
    00029 namespace Lamp{
    00030
    00031 //------------------------------------------------------------------------------
    00032 // コンストラクタ
    00033 TextReader::TextReader(int bufferSize) : Reader(){
    00034     bufferSize_ = bufferSize;
    00035     buffer_ = new char[bufferSize_];
    00036     output_ = new char[bufferSize_];
    00037     position_ = bufferSize_;
    00038 }
    00039 //------------------------------------------------------------------------------
    00040 // デストラクタ
    00041 TextReader::~TextReader(){
    00042     SafeArrayDelete(output_);
    00043     SafeArrayDelete(buffer_);
    00044 }
    00045 //------------------------------------------------------------------------------
    00046 // 文字列の一行読み込み
    00047 // ここでストリームでなくなっている
    00048 String TextReader::readLine(){
    00049     // 初期バッファの読み込み
    00050     if(position_ == bufferSize_){
    00051         readSize_ = Math::minimum(bufferSize_, getSize());
    00052         readBytes(buffer_, readSize_);
    00053         // EOF対策
    00054         filePosition_ = getPosition();
    00055         setPosition(0);
    00056         position_ = 0;
    00057     }
    00058     String returnString;
    00059     int outputPosition = 0;
    00060     while(true){
    00061         char character = buffer_[position_];
    00062         position_++;
    00063         output_[outputPosition] = character;
    00064         outputPosition++;
    00065         // 改行処理
    00066         bool breakFlag = false;
    00067         if(character == '\n'){
    00068             outputPosition--;
    00069             output_[outputPosition] = '\0';
    00070             breakFlag = true;
    00071         }
    00072         if(position_ == readSize_){
    00073             // ファイル終端
    00074             if(readSize_ != bufferSize_){
    00075                 output_[outputPosition] = '\0';
    00076                 setPosition(filePosition_);
    00077                 break;
    00078             }
    00079             // バッファの読み込み
    00080             setPosition(filePosition_);
    00081             readSize_ = Math::minimum(bufferSize_, getSize() - getPosition());
    00082             // 丁度読み終わる
    00083             if(readSize_ == 0){
    00084                 output_[outputPosition] = '\0';
    00085                 setPosition(filePosition_);
    00086                 break;
    00087             }
    00088             readBytes(buffer_, readSize_);
    00089             // EOF対策
    00090             filePosition_ = getPosition();
    00091             setPosition(0);
    00092             position_ = 0;
    00093             // 出力文字列に継ぎ足して出力位置をクリア
    00094             output_[outputPosition] = '\0';
    00095             returnString += output_;
    00096             outputPosition = 0;
    00097             output_[outputPosition] = '\0';
    00098         }
    00099         if(breakFlag){ break; }
    00100     }
    00101     // 出力
    00102     if(output_[outputPosition - 1] == '\r'){
    00103         output_[outputPosition - 1] = '\0';
    00104     }
    00105     returnString += output_;
    00106     return returnString;
    00107 }
    00108 //------------------------------------------------------------------------------
    00109 // テキストリーダデータのコピー
    00110 void TextReader::copyTextReaderData(TextReader* destination){
    00111     ::memcpy(destination->buffer_, buffer_, bufferSize_);
    00112     ::memcpy(destination->output_, output_, bufferSize_);
    00113     destination->readSize_ = readSize_;
    00114     destination->position_ = position_;
    00115     destination->filePosition_ = filePosition_;
    00116 }
    00117 //------------------------------------------------------------------------------
    00118 } // End of namespace Lamp
    00119 //------------------------------------------------------------------------------