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/*-
* #%L
* XML Format Maven Plugin
* %%
* Copyright (C) 2011 - 2016 Acegi Technology Pty Limited
* %%
* 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 au.com.acegi.xmlformat;
import static au.com.acegi.xmlformat.FormatUtil.formatInPlace;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import static java.util.Arrays.asList;
import static java.util.Arrays.copyOf;
import java.util.List;
import org.apache.maven.plugin.AbstractMojo;
import org.apache.maven.plugin.MojoExecutionException;
import org.apache.maven.plugin.MojoFailureException;
import static org.apache.maven.plugins.annotations.LifecyclePhase.PREPARE_PACKAGE;
import org.apache.maven.plugins.annotations.Mojo;
import org.apache.maven.plugins.annotations.Parameter;
import org.codehaus.plexus.util.DirectoryScanner;
import org.dom4j.DocumentException;
import org.dom4j.io.OutputFormat;
import static org.dom4j.io.OutputFormat.createPrettyPrint;
/**
* Finds the XML files in a project and automatically reformats them.
*/
@Mojo(name = "xml-format", defaultPhase = PREPARE_PACKAGE)
@SuppressWarnings("PMD.TooManyFields")
public final class XmlFormatPlugin extends AbstractMojo {
/**
* Quote character to use when writing attributes.
*/
@Parameter(property = "attributeQuoteChar", defaultValue = "\"")
@SuppressWarnings("PMD.ImmutableField")
private char attributeQuoteChar = '"';
/**
* The base directory of the project.
*/
@Parameter(defaultValue = ".", readonly = true, required = true, property
= "project.basedir")
private File baseDirectory;
/**
* The encoding format.
*/
@Parameter(property = "encoding", defaultValue = "UTF-8")
@SuppressWarnings("PMD.ImmutableField")
private String encoding = "UTF-8";
/**
* A set of file patterns that allow you to exclude certain files/folders from
* the formatting. In addition to these exclusions, the project build
* directory (typically target) is always excluded.
*/
@Parameter(property = "excludes", defaultValue = "")
private String[] excludes;
/**
* Whether or not to expand empty elements to <tagName></tagName>.
*/
@Parameter(property = "expandEmptyElements", defaultValue = "false")
private boolean expandEmptyElements;
/**
* A set of file patterns that dictate which files should be included in the
* formatting with each file pattern being relative to the base directory.
*/
@Parameter(property = "includes", defaultValue = "**/*.xml")
private String[] includes;
/**
* Indicates the number of spaces to apply when indenting.
*/
@Parameter(property = "indentSize", defaultValue = "2")
private int indentSize;
/**
* New line separator.
*/
@Parameter(property = "lineSeparator", defaultValue = "\n")
@SuppressWarnings("PMD.ImmutableField")
private String lineSeparator = "\n";
/**
* Whether or not to print new line after the XML declaration.
*/
@Parameter(property = "newLineAfterDeclaration", defaultValue = "false")
private boolean newLineAfterDeclaration;
/**
* Controls when to output a line.separator every so many tags in case of no
* lines and total text trimming.
*/
@Parameter(property = "newLineAfterNTags", defaultValue = "0")
private int newLineAfterNTags;
/**
* The default new line flag, set to do new lines only as in original
* document.
*/
@Parameter(property = "newlines", defaultValue = "true")
private boolean newlines;
/**
* Whether or not to output the encoding in the XML declaration.
*/
@Parameter(property = "omitEncoding", defaultValue = "false")
private boolean omitEncoding;
/**
* Pad string-element boundaries with whitespace.
*/
@Parameter(property = "padText", defaultValue = "false")
private boolean padText;
/**
* Skip XML formatting.
*/
@Parameter(property = "xml-format.skip", defaultValue = "false")
private boolean skip;
/**
* Whether or not to suppress the XML declaration.
*/
@Parameter(property = "suppressDeclaration", defaultValue = "false")
private boolean suppressDeclaration;
/**
* The project target directory. This is always excluded from formatting.
*/
@Parameter(defaultValue = "${project.build.directory}", readonly = true,
required = true)
private File targetDirectory;
/**
* Should we preserve whitespace or not in text nodes.
*/
@Parameter(property = "trimText", defaultValue = "true")
private boolean trimText;
/**
* Whether or not to use XHTML standard.
*/
@Parameter(property = "xhtml", defaultValue = "false")
private boolean xhtml;
@Override
public void execute() throws MojoExecutionException, MojoFailureException {
assert baseDirectory != null;
assert targetDirectory != null;
assert includes != null && includes.length > 0;
assert excludes != null;
if (skip) {
getLog().info("[xml-format] Skipped");
return;
}
final OutputFormat fmt = buildFormatter();
boolean success = true;
for (final String inputName : find()) {
final File input = new File(baseDirectory, inputName); // NOPMD
final boolean changed;
try {
changed = formatInPlace(input, fmt);
} catch (final DocumentException | IOException ex) {
success = false;
getLog().error("[xml-format] Error for " + input, ex);
continue;
}
if (!getLog().isDebugEnabled()) {
continue;
}
final String msg = changed ? "Formatted" : "Unchanged";
getLog().debug("[xml-format] " + msg + ": " + input);
}
if (!success) {
throw new MojoFailureException("[xml-format] Failed)");
}
}
void setBaseDirectory(final File baseDirectory) {
this.baseDirectory = baseDirectory;
}
void setExcludes(final String... excludes) {
this.excludes = excludes == null ? null : copyOf(excludes, excludes.length);
}
void setIncludes(final String... includes) {
this.includes = includes == null ? null : copyOf(includes, includes.length);
}
void setSkip(final boolean skip) {
this.skip = skip;
}
void setTargetDirectory(final File targetDirectory) {
this.targetDirectory = targetDirectory;
}
private OutputFormat buildFormatter() {
final OutputFormat fmt = createPrettyPrint();
fmt.setAttributeQuoteCharacter(attributeQuoteChar);
fmt.setEncoding(encoding);
fmt.setExpandEmptyElements(expandEmptyElements);
fmt.setIndentSize(indentSize);
fmt.setLineSeparator(lineSeparator);
fmt.setNewLineAfterDeclaration(newLineAfterDeclaration);
fmt.setNewLineAfterNTags(newLineAfterNTags);
fmt.setNewlines(newlines);
fmt.setOmitEncoding(omitEncoding);
fmt.setPadText(padText);
fmt.setSuppressDeclaration(suppressDeclaration);
fmt.setTrimText(trimText);
fmt.setXHTML(xhtml);
return fmt;
}
private String[] find() {
final DirectoryScanner dirScanner = new DirectoryScanner();
dirScanner.setBasedir(baseDirectory);
dirScanner.setIncludes(includes);
final List exclude = new ArrayList<>(asList(excludes));
if (baseDirectory.equals(targetDirectory.getParentFile())) {
exclude.add(targetDirectory.getName() + "/**");
}
final String[] excluded = new String[exclude.size()];
dirScanner.setExcludes(exclude.toArray(excluded));
dirScanner.scan();
return dirScanner.getIncludedFiles();
}
}
