kriegaex commented on code in PR #125:
URL: https://github.com/apache/xalan-java/pull/125#discussion_r1399925711
##########
xalan/src/main/java/org/apache/xalan/Version.java:
##########
@@ -20,36 +20,99 @@
*/
package org.apache.xalan;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.Properties;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
/**
* Administrative class to keep track of the version number of
* the Xalan release.
* <P>This class implements the upcoming standard of having
- * org.apache.project-name.Version.getVersion() be a standard way
- * to get version information. This class will replace the older
+ * org.apache.project-name.Version.getVersion() be a standard way
+ * to get version information. This class will replace the older
* org.apache.xalan.processor.Version class.</P>
- * <P>See also: org/apache/xalan/res/XSLTInfo.properties for
+ * <P>See also: org/apache/xalan/res/XSLTInfo.properties for
* information about the version of the XSLT spec we support.</P>
* @xsl.usage general
*/
public class Version
{
+ private static final String POM_PROPERTIES_JAR =
"org/apache/xalan/version.properties";
+ private static final String POM_PROPERTIES_FILE_SYSTEM =
"xalan/target/classes/" + POM_PROPERTIES_JAR;
+ private static final String VERSION_NUMBER_PATTERN =
"^(\\d+)[.](\\d+)[.](D)?(\\d+)(-SNAPSHOT)?$";
+ private static final String NO_VERSION = "0.0.0";
+
+ private static String version = NO_VERSION;
+ private static int majorVersionNum;
+ private static int releaseVersionNum;
+ private static int maintenanceVersionNum;
+ private static int developmentVersionNum;
+
+ private static boolean snapshot;
+
+ static {
+ readProperties();
+ parseVersionNumber();
+ }
+
+ private static void readProperties() {
+ Properties pomProperties = new Properties();
+ try (InputStream fromJar =
Version.class.getClassLoader().getResourceAsStream(POM_PROPERTIES_JAR)) {
+ if (fromJar != null) {
+ pomProperties.load(fromJar);
+ version = pomProperties.getProperty("version", NO_VERSION);
+ }
+ else {
+ try (FileInputStream fromFileSystem = new
FileInputStream(POM_PROPERTIES_FILE_SYSTEM)) {
+ pomProperties.load(fromFileSystem);
+ version = pomProperties.getProperty("version", NO_VERSION);
+ }
+ }
+ }
+ catch (IOException e) {
+ new RuntimeException("Cannot read properties file to extract version
number information: ", e)
+ .printStackTrace();
+ }
+ }
+
+ private static void parseVersionNumber() {
+ Matcher matcher = Pattern.compile(VERSION_NUMBER_PATTERN).matcher(version);
+ if (matcher.find()) {
+ majorVersionNum = Integer.parseInt(matcher.group(1));
+ releaseVersionNum = Integer.parseInt(matcher.group(2));
+ if (matcher.group(3) == null) {
+ maintenanceVersionNum = Integer.parseInt(matcher.group(4));
+ }
+ else {
+ developmentVersionNum = Integer.parseInt(matcher.group(4));
+ }
+ snapshot = matcher.group(5) != null && !matcher.group(5).isEmpty();
+ }
+ else {
+ System.err.println(
+ "Cannot match version \"" + version + "\" " +
+ "against expected pattern \"" + VERSION_NUMBER_PATTERN + "\""
+ );
Review Comment:
See above. Besides, it is easy to relate it to Xalan, because a stack trace
will also be logged.
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