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//
// StreamReader.cpp
//
// Created by LIU XiaoDan on 7/10/2012.
//
/***********************************************************************************
*
* All code (C) LIU XiaoDan (lxdfigo), 2012
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
*
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
************************************************************************************/
#include "StreamReader.h"
const char NEWLINEC = '\n';
StreamReader::StreamReader():
file(NULL),
curCol(0),
curLine(0),
dictionary(NULL)
{
}
StreamReader::~StreamReader(void)
{
if(file != NULL) fclose(file);
}
bool StreamReader::initFile(std::string filename){
fopen_s(&file,filename.c_str(),"r");
if (file == NULL) return false;
return true;
}
InputObject* StreamReader::getNextObject(){
if (file == NULL)return NULL;
std::string input;
while(true){
char ic = fgetc(file);
if (ic < 0) break;
curCol++;
if (ic == NEWLINEC){
curLine++;
curCol = 0;
}
InputObject *object = dictionary->checkLetter(ic);
if (object->getType() == NORMAL_LETTER){
input.push_back(ic);
}else if (object->getType() == IGNORE_LETTER){
continue;
}else if (object->getType() == SPECIAL_LETTER){
if (input.empty() == true) return object;
fseek(file,-1,SEEK_CUR);
break;
}else if (object->getType() == SEPARATE_LETTER){
if (input.empty() == true) continue;
else break;
}else if (object->getType() == INVALID_LETTER){
reportError();
}
}
if (input.empty() == true) return NULL;
InputObject *object = dictionary->checkWord(input);
if (object->getType() == INVALID_WORD){
reportError();
}
return object;
}
void StreamReader::reportError(){
printf("Error in Line %d Colume %d\n",curLine,curCol);
}
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