org.sonar.plugins.visualstudio.VisualStudioSolutionParser Maven / Gradle / Ivy

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/*
 * Analysis Bootstrapper for Visual Studio Projects
 * Copyright (C) 2014 SonarSource
 * [email protected]
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02
 */
package org.sonar.plugins.visualstudio;

import com.google.common.base.Charsets;
import com.google.common.base.Throwables;
import com.google.common.collect.ImmutableList;
import com.google.common.io.Files;

import java.io.File;
import java.io.IOException;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class VisualStudioSolutionParser {

  private static final String PROJECT_LINE_LOOKAHEAD = "Project(";
  private static final Pattern PROJECT_LINE_PATTERN = Pattern.compile("Project\\(\"[^\"]++\"\\)\\s*+=\\s*+\"([^\"]++)\",\\s*+\"([^\"]++)\",\\s*+\"[^\"]++\"");

  public VisualStudioSolution parse(File file) {
    ImmutableList.Builder projectsBuilder = ImmutableList.builder();

    try {
      int lineNumber = 1;
      for (String line : Files.readLines(file, Charsets.UTF_8)) {
        if (line.startsWith(PROJECT_LINE_LOOKAHEAD)) {
          projectsBuilder.add(parseProjectLine(file, lineNumber, line));
        }
        lineNumber++;
      }
    } catch (IOException e) {
      throw Throwables.propagate(e);
    }

    return new VisualStudioSolution(projectsBuilder.build());
  }

  private VisualStudioSolutionProject parseProjectLine(File file, int lineNumber, String line) {
    Matcher matcher = PROJECT_LINE_PATTERN.matcher(line);
    if (!matcher.matches()) {
      throw new ParseErrorException("Expected the line " + lineNumber + " of " + file.getAbsolutePath() + " to match the regular expression " + PROJECT_LINE_PATTERN);
    }

    return new VisualStudioSolutionProject(matcher.group(1), matcher.group(2));
  }

  private static class ParseErrorException extends RuntimeException {

    private static final long serialVersionUID = 1L;

    public ParseErrorException(String message) {
      super(message);
    }

  }

}