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// (C) 2006 uchicom
package com.uchicom.csve.util;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;

/** @author uchiyama */
public class SeparateReader {

  /**
   * コンストラクタ
   *
   * @param fileName
   * @param enc
   */
  public SeparateReader(String fileName, String enc, char sepChar) {
    this.sepChar = sepChar;
    try {
      reader = new BufferedReader(new InputStreamReader(new FileInputStream(fileName), enc));

    } catch (FileNotFoundException exception) {
    } catch (Exception e) {

    }
  }

  public SeparateReader(File file, String enc, char sepChar) {
    this.sepChar = sepChar;
    try {
      reader = new BufferedReader(new InputStreamReader(new FileInputStream(file), enc));

    } catch (FileNotFoundException exception) {
    } catch (Exception e) {

    }
  }

  public String[] getNextSeparateLine() {
    String line = null;

    try {
      int ch = reader.read();
      if (ch > -1) {
        StringBuffer strBuff = new StringBuffer();
        while (ch > -1) {
          if (((char) ch) == '\n') break;
          strBuff.append((char) ch);
          ch = reader.read();
        }
        line = strBuff.toString();
      }
    } catch (FileNotFoundException exception) {

    } catch (IOException exception) {
    } catch (Exception e) {
      e.printStackTrace();
    }
    List charList = new ArrayList<>();
    if (line != null) {
      char[] lineChar = line.toCharArray();
      int iMaxChar = lineChar.length;
      int beginIndex = 0;
      for (int iChar = 0; iChar < iMaxChar; iChar++) {

        if (lineChar[iChar] == sepChar) {
          charList.add(line.substring(beginIndex, iChar));
          beginIndex = iChar + 1;
        }
      }
      if (beginIndex < iMaxChar) {
        charList.add(line.substring(beginIndex, iMaxChar));
      }

      return (String[]) charList.toArray(new String[0]);
    } else {
      return null;
    }
  }

  public void close() {
    if (reader != null) {
      try {
        reader.close();
      } catch (Exception e) {
      } finally {
        reader = null;
      }
    }
  }

  private char sepChar = ',';
  BufferedReader reader = null;
}