/*
* Copyright 2008-2017 the original author or authors.
*
* 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.
*/
package griffon.core.env;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.net.URL;
import java.util.Properties;
import static griffon.util.GriffonNameUtils.isBlank;
/**
* @author Andres Almiray
*/
public class GriffonEnvironment {
private static final Logger LOG = LoggerFactory.getLogger(GriffonEnvironment.class);
private static final String BUILD_DATE;
private static final String BUILD_TIME;
private static final String BUILD_REVISION;
private static final String GRIFFON_VERSION;
static {
String buildDate = null;
String buildTime = null;
String buildRevision = null;
String version = null;
try {
Properties griffonProperties = new Properties();
URL griffonPropertiesResource = GriffonEnvironment.class.getClassLoader().getResource("META-INF/griffon-core.properties");
if (griffonPropertiesResource != null) {
griffonProperties.load(griffonPropertiesResource.openStream());
buildDate = griffonProperties.getProperty("build.date");
buildTime = griffonProperties.getProperty("build.time");
buildRevision = griffonProperties.getProperty("build.revision");
version = griffonProperties.getProperty("griffon.version");
}
if (isBlank(buildDate) || isBlank(buildTime) || isBlank(version)) {
LOG.error("Unable to read Griffon version from META-INF/griffon-core.properties. Are you sure the griffon-core jar is in the classpath?");
buildDate = buildTime = buildRevision = version = "";
}
} catch (Exception e) {
LOG.error("Unable to read Griffon version from META-INF/griffon-core.properties. Are you sure the griffon-core jar is in the classpath? " + e.getMessage(), e);
buildDate = buildTime = buildRevision = version = "";
}
BUILD_DATE = buildDate;
BUILD_TIME = buildTime;
BUILD_REVISION = buildRevision;
GRIFFON_VERSION = version;
}
private GriffonEnvironment() {
// disable instantiation
}
public static String getGriffonVersion() {
return GRIFFON_VERSION;
}
public static String getJvmVersion() {
StringBuilder sb = new StringBuilder();
sb.append(System.getProperty("java.version"))
.append(" (")
.append(System.getProperty("java.vendor"))
.append(" ")
.append(System.getProperty("java.vm.version"))
.append(")");
return sb.toString();
}
public static String getOsVersion() {
StringBuilder sb = new StringBuilder();
sb.append(System.getProperty("os.name"))
.append(" ")
.append(System.getProperty("os.version"))
.append(" ")
.append(System.getProperty("os.arch"));
return sb.toString();
}
public static String getBuildDateTime() {
return BUILD_DATE + "T" + BUILD_TIME;
}
public static String getBuildDate() {
return BUILD_DATE;
}
public static String getBuildTime() {
return BUILD_TIME;
}
public static String getBuildRevision() {
return BUILD_REVISION;
}
public static String prettyPrint() {
padLeft("Griffon", 8, " ");
final StringBuilder sb = new StringBuilder();
sb.append("\n------------------------------------------------------------\n")
.append(padLeft("Griffon", 9, " "))
.append(" ")
.append(getGriffonVersion())
.append("\n------------------------------------------------------------\n\n");
entry("Build", getBuildDateTime(), sb);
entry("Revision", getBuildRevision(), sb);
entry("JVM", getJvmVersion(), sb);
entry("OS", getOsVersion(), sb);
return sb.toString();
}
private static void entry(String label, String version, StringBuilder sb) {
sb.append(padLeft(label, 8, " "))
.append(": ")
.append(version)
.append("\n");
}
private static String padLeft(String self, Number numberOfChars, String padding) {
int numChars = numberOfChars.intValue();
if (numChars <= self.length()) {
return self;
} else {
return getPadding(padding, numChars - self.length()) + self;
}
}
private static String getPadding(String padding, int length) {
if (padding.length() < length) {
return multiply(padding, length / padding.length() + 1).substring(0, length);
} else {
return padding.substring(0, length);
}
}
private static String multiply(String self, Number factor) {
int size = factor.intValue();
if (size == 0)
return "";
else if (size < 0) {
throw new IllegalArgumentException("multiply() should be called with a number of 0 or greater not: " + size);
}
StringBuilder answer = new StringBuilder(self);
for (int i = 1; i < size; i++) {
answer.append(self);
}
return answer.toString();
}
}