se.vandmo.textchecker.maven.Content Maven / Gradle / Ivy

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Maven plugin that checks that text files adheres to certain rules.

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package se.vandmo.textchecker.maven;

import static com.google.common.base.Charsets.UTF_8;
import static com.google.common.base.Preconditions.checkNotNull;
import static java.lang.System.lineSeparator;
import static java.util.regex.Pattern.compile;
import static se.vandmo.textchecker.maven.ContentType.JAVA;
import static se.vandmo.textchecker.maven.ContentType.TEXT;

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

import com.google.common.io.Files;

import se.vandmo.textchecker.maven.utils.FileUtils;
import se.vandmo.textchecker.maven.utils.LineChecker;
import se.vandmo.textchecker.maven.utils.LineModifier;


public final class Content {

  private static final Pattern LINE_PATTERN = compile("\\r?\\n");

  private final ContentType type;
  private String data;
  private boolean executable;

  public Content(ContentType type, String data, boolean executable) {
    checkNotNull(type);
    checkNotNull(data);
    this.data = data;
    this.type = type;
    this.executable = executable;
  }

  public static Content contentFromFile(File file) throws IOException {
    String data = Files.toString(file, UTF_8);
    return new Content(guessType(file), data, FileUtils.isExecutable(file.toPath()));
  }

  public ContentType type() {
    return type;
  }

  public String data() {
    return data;
  }

  public void data(String data) {
    this.data = data;
  }

  public boolean executable() {
    return executable;
  }

  public void executable(boolean executable) {
    this.executable = executable;
  }

  public void modifyLines(LineModifier modifier) {
    StringBuilder result = new StringBuilder();
    for (String line : LINE_PATTERN.split(data)) {
      result.append(modifier.modify(line)).append(lineSeparator());
    }
    data = result.toString();
  }

  public boolean checkLines(LineChecker checker) {
    for (String line : LINE_PATTERN.split(data)) {
      if (!checker.check(line)) {
        return false;
      }
    }
    return true;
  }

  private static ContentType guessType(File file) {
    if (file.getName().endsWith(".java")) {
      return JAVA;
    }
    return TEXT;
  }

  public void writeTo(File file) throws IOException {
    Files.write(data, file, UTF_8);
    FileUtils.setExecutable(file.toPath(), executable);
  }

}