com.sun.xml.ws.util.VersionUtil Maven / Gradle / Ivy
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package com.sun.xml.ws.util;
import java.util.StringTokenizer;
/**
* Provides some version utilities.
*
* @author JAX-WS Development Team
*/
public final class VersionUtil {
public static boolean isVersion20(String version) {
return JAXWS_VERSION_20.equals(version);
}
/**
* @param version
* @return true if version is a 2.0 version
*/
public static boolean isValidVersion(String version) {
return isVersion20(version);
}
public static String getValidVersionString() {
return JAXWS_VERSION_20;
}
/**
* BugFix# 4948171
* Method getCanonicalVersion.
*
* Converts a given version to the format "a.b.c.d"
* a - major version
* b - minor version
* c - minor minor version
* d - patch version
*
* @return int[] Canonical version number
*/
public static int[] getCanonicalVersion(String version) {
int[] canonicalVersion = new int[4];
// initialize the default version numbers
canonicalVersion[0] = 1;
canonicalVersion[1] = 1;
canonicalVersion[2] = 0;
canonicalVersion[3] = 0;
final String DASH_DELIM = "_";
final String DOT_DELIM = ".";
StringTokenizer tokenizer =
new StringTokenizer(version, DOT_DELIM);
String token = tokenizer.nextToken();
// first token is major version and must not have "_"
canonicalVersion[0] = Integer.parseInt(token);
// resolve the minor version
token = tokenizer.nextToken();
if (token.indexOf(DASH_DELIM) == -1) {
// a.b
canonicalVersion[1] = Integer.parseInt(token);
} else {
// a.b_c
StringTokenizer subTokenizer =
new StringTokenizer(token, DASH_DELIM);
canonicalVersion[1] = Integer.parseInt(subTokenizer.nextToken());
// leave minorMinor default
canonicalVersion[3] = Integer.parseInt(subTokenizer.nextToken());
}
// resolve the minorMinor and patch version, if any
if (tokenizer.hasMoreTokens()) {
token = tokenizer.nextToken();
if (token.indexOf(DASH_DELIM) == -1) {
// minorMinor
canonicalVersion[2] = Integer.parseInt(token);
// resolve patch, if any
if (tokenizer.hasMoreTokens())
canonicalVersion[3] = Integer.parseInt(tokenizer.nextToken());
} else {
// a.b.c_d
StringTokenizer subTokenizer =
new StringTokenizer(token, DASH_DELIM);
// minorMinor
canonicalVersion[2] = Integer.parseInt(subTokenizer.nextToken());
// patch
canonicalVersion[3] = Integer.parseInt(subTokenizer.nextToken());
}
}
return canonicalVersion;
}
/**
*
* @param version1
* @param version2
* @return -1, 0 or 1 based upon the comparison results
* -1 if version1 is less than version2
* 0 if version1 is equal to version2
* 1 if version1 is greater than version2
*/
public static int compare(String version1, String version2) {
int[] canonicalVersion1 = getCanonicalVersion(version1);
int[] canonicalVersion2 = getCanonicalVersion(version2);
if (canonicalVersion1[0] < canonicalVersion2[0]) {
return -1;
} else if (canonicalVersion1[0] > canonicalVersion2[0]) {
return 1;
} else {
if (canonicalVersion1[1] < canonicalVersion2[1]) {
return -1;
} else if (canonicalVersion1[1] > canonicalVersion2[1]) {
return 1;
} else {
if (canonicalVersion1[2] < canonicalVersion2[2]) {
return -1;
} else if (canonicalVersion1[2] > canonicalVersion2[2]) {
return 1;
} else {
if (canonicalVersion1[3] < canonicalVersion2[3]) {
return -1;
} else if (canonicalVersion1[3] > canonicalVersion2[3]) {
return 1;
} else
return 0;
}
}
}
}
public static final String JAXWS_VERSION_20 = "2.0";
// the latest version is default
public static final String JAXWS_VERSION_DEFAULT = JAXWS_VERSION_20;
}