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ICU-7365 Promote approved data version API to draft 49 in ICU4J

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X-SVN-Rev: 30571
This commit is contained in:
Michael Ow 2011-08-23 17:24:11 +00:00
parent ac6992371c
commit dd8732a309
1 changed files with 2 additions and 54 deletions
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56
icu4j/main/classes/core/src/com/ibm/icu/impl/ICUDataVersion.java
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@ -1,6 +1,6 @@
/*
*******************************************************************************
* Copyright (C) 2009-2010, International Business Machines
* Copyright (C) 2009-2011, International Business Machines
* Corporation and others. All Rights Reserved.
*******************************************************************************
*/
@ -14,55 +14,14 @@ import com.ibm.icu.util.VersionInfo;
public final class ICUDataVersion {
private static final String U_ICU_VERSION_BUNDLE = "icuver";
private static final String U_ICU_STD_BUNDLE = "icustd";
private static final String U_ICU_DATA_KEY = "DataVersion";
/**
* This function loads up icuver and compares the data version to the wired-in ICU_DATA_VERSION.
* If icuver shows something less than ICU_DATA_VERSION it returns TRUE, else FALSE. The version
* found will be returned in the first fillin parameter (if non-null), and *isModified will be set
* to TRUE if "icustd" is NOT found. Thus, if the data has been repackaged or modified, "icustd"
* (standard ICU) will be missing, and the function will alert the caller that the data is not standard.
*
* @param dataVersionFillin icuver data version information to be filled in if not-null
* @return TRUE if ICU_DATA_VERSION is newer than icuver, else FALSE
*/
public static boolean isDataOlder(VersionInfo dataVersionFillin) {
boolean result = true;
VersionInfo dataVersion = getDataVersion();
if (dataVersion!= null) {
if (dataVersion.compareTo(VersionInfo.ICU_DATA_VERSION) != -1) {
result = false;
}
if (dataVersionFillin != null) {
dataVersionFillin = VersionInfo.getInstance(dataVersion.toString());
}
}
return result;
}
/**
* This function tests whether "icustd" is available in the data. If the data has been repackaged or modified, "icustd"
* (standard ICU) will be missing, and the function will alert the caller that the data is not standard.
*
* @return TRUE if data has been modified, else FALSE
*/
public static boolean isDataModified() {
if (hasICUSTDBundle()) {
return false;
}
return true;
}
/**
* This function retrieves the data version from icuver and returns a VersionInfo object with that version information.
*
* @return Current icu data version
* @draft ICU 49
*/
public static VersionInfo getDataVersion() {
UResourceBundle icudatares = null;
@ -75,15 +34,4 @@ public final class ICUDataVersion {
return VersionInfo.getInstance(icudatares.getString());
}
private static boolean hasICUSTDBundle() {
try {
UResourceBundle.getBundleInstance(ICUDataVersion.U_ICU_STD_BUNDLE);
} catch (MissingResourceException ex) {
return false;
}
return true;
}
}