/*
    * #%L
    * Native ARchive plugin for Maven
    * %%
    * Copyright (C) 2002 - 2014 NAR Maven Plugin developers.
    * %%
    * Licensed under the Apache License, Version 2.0 (the "License");
    * you may not use this file except in compliance with the License.
    * You may obtain a copy of the License at
   * 
   * http://www.apache.org/licenses/LICENSE-2.0
   * 
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   * #L%
   */
  package com.github.maven_nar.cpptasks.borland;
  
  import java.io.IOException;
  import java.io.Reader;
  import java.util.Vector;
  
  import com.github.maven_nar.cpptasks.parser.AbstractParser;
  import com.github.maven_nar.cpptasks.parser.AbstractParserState;
  import com.github.maven_nar.cpptasks.parser.LetterState;
  import com.github.maven_nar.cpptasks.parser.WhitespaceOrLetterState;
  
  /**
   * A parser that paths from a borland cfg file
   *
   * @author Curt Arnold
   */
  public final class BorlandCfgParser extends AbstractParser {
    private final AbstractParserState newLineState;
    private final Vector<String> path = new Vector<>();
  
    /**
       *
       *
       */
    public BorlandCfgParser(final char switchChar) {
      //
      // a quoted path (-I"some path")
      // doesn't end till a close quote and will be abandoned
      // if a new line is encountered first
      //
      final AbstractParserState quote = new CfgFilenameState(this, new char[] {
        '"'
      });
      //
      // an unquoted path (-Ic:\borland\include)
      // ends at the first space or new line
      final AbstractParserState unquote = new CfgFilenameState(this, new char[] {
          ' ', '\n', '\r'
      });
      final AbstractParserState quoteBranch = new QuoteBranchState(this, quote, unquote);
      final AbstractParserState toNextSwitch = new ConsumeToSpaceOrNewLine(this);
      final AbstractParserState switchState = new LetterState(this, switchChar, quoteBranch, toNextSwitch);
      this.newLineState = new WhitespaceOrLetterState(this, '-', switchState);
    }
  
    @Override
    public void addFilename(final String include) {
      this.path.addElement(include);
    }
  
    @Override
    public AbstractParserState getNewLineState() {
      return this.newLineState;
    }
  
    public String[] parsePath(final Reader reader) throws IOException {
      this.path.setSize(0);
      super.parse(reader);
      final String[] retval = new String[this.path.size()];
      this.path.copyInto(retval);
      return retval;
    }
  }