flex2.tools.VersionInfo Maven / Gradle / Ivy
/*
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 flex2.tools;
import java.io.InputStream;
import java.io.IOException;
import java.util.Properties;
/**
* A helper class for querying build number, Flex version, and library
* version information.
*/
public class VersionInfo
{
public static String FLEX_MAJOR_VERSION = "4";
public static String FLEX_MINOR_VERSION = "12";
public static String FLEX_NANO_VERSION = "0";
/**
* Lib version is the "version" of the SWC format. Major number changes represent big (although not
* by definition incompatble) changes, such as bytecode format revs. Minor number changes are intended
* to represent easy-to-support modifications. The only universal rule is that the compiler will warn
* when a "future" major version is found in a SWC that's being read in.
*
* It's expected that incompatible changes will arise. Ad-hoc guard code will be added to implement those
* dividing lines. The way the code is currently laid out, these would probably be implemented in Swc.read(),
* but in any case they should be finable by looking at the callers of VersionInfo.getLibVersion().
*
*
* Version 1.2: Add <keep-as3-metadata> container to catalog.xml to perserve metadata
*
*
* Version 1.1: Add <digest> container to catalog xml for cross-domain rsls support.
* Add "signatureChecksum" attribute to "script" element.
*
*
*
* Version 1.0: Initial version.
*
*
*/
public static String LIB_VERSION_1_0 = "1.0";
public static String LIB_VERSION_1_1 = "1.1";
public static String LIB_VERSION_1_2 = "1.2";
public static String LIB_MAJOR_VERSION = "1";
public static String LIB_MINOR_VERSION = "2";
//Cache this info as it should not change during the time class is loaded
static String BUILD_MESSAGE;
static String BUILD_NUMBER_STRING;
static String FLEX_VERSION_NUMBER;
static String LIB_VERSION_NUMBER;
public static String buildMessage()
{
if (BUILD_MESSAGE == null)
{
try
{
//Ensure we've parsed build info
getBuild();
String buildNum = BUILD_NUMBER_STRING;
if (buildNum == null || buildNum.equals(""))
{
buildNum = "development";
}
BUILD_MESSAGE = "Version " + FLEX_MAJOR_VERSION + "." + FLEX_MINOR_VERSION +
"." + FLEX_NANO_VERSION + " build " + buildNum;
}
catch (Exception t)
{
/*
if (Trace.error)
{
t.printStackTrace();
}
*/
BUILD_MESSAGE = "build information unavailable";
}
}
return BUILD_MESSAGE;
}
public static String getBuild()
{
if (BUILD_NUMBER_STRING == null)
{
BUILD_NUMBER_STRING = "";
InputStream in = null;
try
{
Properties p = new Properties();
in = VersionInfo.class.getResourceAsStream("version.properties");
if (in != null)
{
p.load(in);
String build = p.getProperty("build");
if ((build != null) && (! build.equals("")))
{
// In open source builds the build number has changed from an
// integer to a string of dot separated integers.
// for example: 191195 -> 3.0.0.97
int dot_index = build.lastIndexOf(".");
if (dot_index != -1)
{
build = build.substring(dot_index + 1);
}
BUILD_NUMBER_STRING = build;
}
}
}
catch (Exception t)
{
/*
if (Trace.error)
{
t.printStackTrace();
}
*/
}
finally
{
if (in != null)
{
try
{
in.close();
}
catch (IOException ex)
{
}
}
}
}
return BUILD_NUMBER_STRING;
}
public static String getFlexVersion()
{
if (FLEX_VERSION_NUMBER == null)
{
FLEX_VERSION_NUMBER = FLEX_MAJOR_VERSION + "." + FLEX_MINOR_VERSION +
"." + FLEX_NANO_VERSION;
}
return FLEX_VERSION_NUMBER;
}
public static String getLibVersion()
{
if (LIB_VERSION_NUMBER == null)
{
LIB_VERSION_NUMBER = LIB_MAJOR_VERSION + "." + LIB_MINOR_VERSION;
}
return LIB_VERSION_NUMBER;
}
/**
*
* @param swcLibVersion - library version to compare with the current library version.
* @param compareMajorVersion - if true, compare only the major versions. Otherwise compare
* both major and minor versions.
* @return true if the given library version is greater than the compiled in library version.
*/
public static boolean IsNewerLibVersion(String swcLibVersion, boolean compareMajorVersion)
{
return compareVersions(swcLibVersion, getLibVersion(), compareMajorVersion) > 0;
}
/**
* Compare two version strings that are in at "Major.minor" format.
*
* Examples) "1.0", "1.1"
*
* @param version1 first version
* @param version2 second version
* @param compareMajorVersion compare only the major versions, disregarding the minor version.
*
* @return zero if the versions are equal
* less than zero if version1 is less than version2
* greater than zero if version1 is greater than version2
*/
public static int compareVersions(String version1, String version2, boolean compareMajorVersion)
{
// C: change this implementation if the lib version changes from the a.b format to the a.b.c. format.
// Obviously, a.b.c is not a number!
double v1 = 0, v2 = 0;
try
{
v1 = Double.parseDouble(version1);
}
catch (NumberFormatException ex)
{
/*
if (Trace.error)
{
ex.printStackTrace();
}
*/
}
try
{
v2 = Double.parseDouble(version2);
}
catch (NumberFormatException ex)
{
/*
if (Trace.error)
{
ex.printStackTrace();
}
*/
}
if (compareMajorVersion)
{
v1 = Math.floor(v1);
v2 = Math.floor(v2);
}
if (v1 == v2)
{
return 0;
}
else if (v1 < v2)
{
return -1;
}
return 1;
}
}
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