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/***** BEGIN LICENSE BLOCK *****
* Version: EPL 1.0/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Eclipse Public
* License Version 1.0 (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.eclipse.org/legal/epl-v10.html
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* Copyright (C) 2010 Charles O Nutter <headius@headius.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the EPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the EPL, the GPL or the LGPL.
***** END LICENSE BLOCK *****/
package org.jruby.ext.psych;
import java.io.InputStream;
import java.io.IOException;
import java.util.Properties;
import org.jcodings.Encoding;
import org.jcodings.specific.UTF16BEEncoding;
import org.jcodings.specific.UTF16LEEncoding;
import org.jcodings.specific.UTF8Encoding;
import org.jruby.Ruby;
import org.jruby.RubyArray;
import org.jruby.RubyModule;
import org.jruby.RubyString;
import org.jruby.internal.runtime.methods.JavaMethod.JavaMethodZero;
import org.jruby.runtime.ThreadContext;
import org.jruby.runtime.Visibility;
import org.jruby.runtime.builtin.IRubyObject;
import org.jruby.runtime.load.Library;
import org.yaml.snakeyaml.error.Mark;
public class PsychLibrary implements Library {
private static final String DUMMY_VERSION = "0.0";
public void load(final Ruby runtime, boolean wrap) {
RubyModule psych = runtime.defineModule("Psych");
// load version from properties packed with the jar
Properties props = new Properties();
try( InputStream is = runtime.getJRubyClassLoader().getResourceAsStream("META-INF/maven/org.yaml/snakeyaml/pom.properties") ) {
props.load(is);
}
catch( IOException e ) {
// ignored
}
String snakeyamlVersion = props.getProperty("version", DUMMY_VERSION);
if (snakeyamlVersion.endsWith("-SNAPSHOT")) {
snakeyamlVersion = snakeyamlVersion.substring(0, snakeyamlVersion.length() - "-SNAPSHOT".length());
}
// Try to determine if we have a new enough SnakeYAML.
// Versions before 1.21 removed a Mark constructor that JRuby uses.
// See https://github.com/bundler/bundler/issues/6878
if (snakeyamlVersion.equals(DUMMY_VERSION)) {
try {
// Use reflection to try to confirm we have a new enough version
Mark.class.getConstructor(String.class, int.class, int.class, int.class, int[].class, int.class);
} catch (NoSuchMethodException nsme) {
throw runtime.newLoadError("bad SnakeYAML version, required 1.21 or higher; check your CLASSPATH for a conflicting jar");
}
} else {
// Parse version string to check for 1.21+
String[] majorMinor = snakeyamlVersion.split("\\.");
if (majorMinor.length < 2 || Integer.parseInt(majorMinor[0]) < 1 || Integer.parseInt(majorMinor[1]) < 21) {
throw runtime.newLoadError(
"bad SnakeYAML version " + snakeyamlVersion +
", required 1.21 or higher; check your CLASSPATH for a conflicting jar");
}
}
RubyString version = runtime.newString(snakeyamlVersion + ".0");
version.setFrozen(true);
psych.setConstant("SNAKEYAML_VERSION", version);
String[] versionParts = version.toString().split("\\.");
final RubyArray versionElements = runtime.newArray(runtime.newFixnum(Integer.parseInt(versionParts[0])), runtime.newFixnum(Integer.parseInt(versionParts[1])), runtime.newFixnum(Integer.parseInt(versionParts[2])));
versionElements.setFrozen(true);
psych.getSingletonClass().addMethod("libyaml_version", new JavaMethodZero(psych, Visibility.PUBLIC) {
@Override
public IRubyObject call(ThreadContext context, IRubyObject self, RubyModule clazz, String name) {
return versionElements;
}
});
PsychParser.initPsychParser(runtime, psych);
PsychEmitter.initPsychEmitter(runtime, psych);
PsychToRuby.initPsychToRuby(runtime, psych);
}
public enum YAMLEncoding {
YAML_ANY_ENCODING(UTF8Encoding.INSTANCE),
YAML_UTF8_ENCODING(UTF8Encoding.INSTANCE),
YAML_UTF16LE_ENCODING(UTF16LEEncoding.INSTANCE),
YAML_UTF16BE_ENCODING(UTF16BEEncoding.INSTANCE);
YAMLEncoding(Encoding encoding) {
this.encoding = encoding;
}
public final Encoding encoding;
}
}
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