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// Copyright (C) 2013 The Android Open Source Project
//
// 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.
import com.google.common.io.ByteStreams;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.FilenameFilter;
import java.io.IOException;
import java.io.InputStream;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;
import org.asciidoctor.Asciidoctor;
import org.asciidoctor.AttributesBuilder;
import org.asciidoctor.Options;
import org.asciidoctor.OptionsBuilder;
import org.asciidoctor.SafeMode;
import org.asciidoctor.internal.JRubyAsciidoctor;
import org.kohsuke.args4j.Argument;
import org.kohsuke.args4j.CmdLineException;
import org.kohsuke.args4j.CmdLineParser;
import org.kohsuke.args4j.Option;
public class AsciiDoctor {
private static final String DOCTYPE = "article";
private static final String ERUBY = "erb";
private static final String REVNUMBER_NAME = "revnumber";
@Option(name = "-b", usage = "set output format backend")
private String backend = "html5";
@Option(name = "-z", usage = "output zip file")
private String zipFile;
@Option(name = "--in-ext", usage = "extension for input files")
private String inExt = ".txt";
@Option(name = "--out-ext", usage = "extension for output files")
private String outExt = ".html";
@Option(name = "--base-dir", usage = "base directory")
private File basedir;
@Option(name = "--tmp", usage = "temporary output path")
private File tmpdir;
@Option(name = "--mktmp", usage = "create a temporary output path")
private boolean mktmp;
@Option(name = "-a", usage = "a list of attributes, in the form key or key=value pair")
private List<String> attributes = new ArrayList<>();
@Option(
name = "--bazel",
usage = "bazel mode: generate multiple output files instead of a single zip file")
private boolean bazel;
@Option(name = "--revnumber-file", usage = "the file contains revnumber string")
private File revnumberFile;
@Argument(usage = "input files")
private List<String> inputFiles = new ArrayList<>();
private String revnumber;
public static String mapInFileToOutFile(String inFile, String inExt, String outExt) {
String basename = new File(inFile).getName();
if (basename.endsWith(inExt)) {
basename = basename.substring(0, basename.length() - inExt.length());
} else {
// Strip out the last extension
int pos = basename.lastIndexOf('.');
if (pos > 0) {
basename = basename.substring(0, pos);
}
}
return basename + outExt;
}
private Options createOptions(File base, File outputFile) {
OptionsBuilder optionsBuilder = OptionsBuilder.options();
optionsBuilder
.backend(backend)
.docType(DOCTYPE)
.eruby(ERUBY)
.safe(SafeMode.UNSAFE)
.baseDir(base)
.toFile(outputFile);
AttributesBuilder attributesBuilder = AttributesBuilder.attributes();
attributesBuilder.attributes(getAttributes());
if (revnumber != null) {
attributesBuilder.attribute(REVNUMBER_NAME, revnumber);
}
optionsBuilder.attributes(attributesBuilder.get());
return optionsBuilder.get();
}
private Map<String, Object> getAttributes() {
Map<String, Object> attributeValues = new HashMap<>();
for (String attribute : attributes) {
int equalsIndex = attribute.indexOf('=');
if (equalsIndex > -1) {
String name = attribute.substring(0, equalsIndex);
String value = attribute.substring(equalsIndex + 1, attribute.length());
attributeValues.put(name, value);
} else {
attributeValues.put(attribute, "");
}
}
return attributeValues;
}
private void invoke(String... parameters) throws IOException {
CmdLineParser parser = new CmdLineParser(this);
try {
parser.parseArgument(parameters);
if (inputFiles.isEmpty()) {
throw new CmdLineException(parser, "asciidoctor: FAILED: input file missing");
}
} catch (CmdLineException e) {
System.err.println(e.getMessage());
parser.printUsage(System.err);
System.exit(1);
return;
}
if (revnumberFile != null) {
try (BufferedReader reader = new BufferedReader(new FileReader(revnumberFile))) {
revnumber = reader.readLine();
}
}
if (mktmp) {
tmpdir = Files.createTempDirectory("asciidoctor-").toFile();
}
if (bazel) {
renderFiles(inputFiles, null);
} else {
try (ZipOutputStream zip = new ZipOutputStream(Files.newOutputStream(Paths.get(zipFile)))) {
renderFiles(inputFiles, zip);
File[] cssFiles =
tmpdir.listFiles(
new FilenameFilter() {
@Override
public boolean accept(File dir, String name) {
return name.endsWith(".css");
}
});
for (File css : cssFiles) {
zipFile(css, css.getName(), zip);
}
}
}
}
private void renderFiles(List<String> inputFiles, ZipOutputStream zip) throws IOException {
Asciidoctor asciidoctor = JRubyAsciidoctor.create();
for (String inputFile : inputFiles) {
String outName = mapInFileToOutFile(inputFile, inExt, outExt);
File out = bazel ? new File(outName) : new File(tmpdir, outName);
if (!bazel) {
out.getParentFile().mkdirs();
}
File input = new File(inputFile);
Options options = createOptions(basedir != null ? basedir : input.getParentFile(), out);
asciidoctor.renderFile(input, options);
if (zip != null) {
zipFile(out, outName, zip);
}
}
}
public static void zipFile(File file, String name, ZipOutputStream zip) throws IOException {
zip.putNextEntry(new ZipEntry(name));
try (InputStream input = Files.newInputStream(file.toPath())) {
ByteStreams.copy(input, zip);
}
zip.closeEntry();
}
public static void main(String[] args) {
try {
new AsciiDoctor().invoke(args);
} catch (IOException e) {
System.err.println(e.getMessage());
System.exit(1);
}
}
}
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