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6792400: Avoid loading of Normalizer resources for simple uses

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Reviewed-by: okutsu
This commit is contained in:
Yuka Kamiya 2009-06-25 21:55:39 +09:00
parent b6b6594d50
commit bbd33e6ddc
1 changed files with 23 additions and 4 deletions
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27
jdk/src/share/classes/sun/text/normalizer/NormalizerBase.java
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@ -1598,15 +1598,34 @@ public final class NormalizerBase implements Cloneable {
* @param options the optional features to be enabled. * @param options the optional features to be enabled.
*/ */
public static String normalize(String str, Normalizer.Form form, int options) { public static String normalize(String str, Normalizer.Form form, int options) {
int len = str.length();
boolean asciiOnly = true;
if (len < 80) {
for (int i = 0; i < len; i++) {
if (str.charAt(i) > 127) {
asciiOnly = false;
break;
}
}
} else {
char[] a = str.toCharArray();
for (int i = 0; i < len; i++) {
if (a[i] > 127) {
asciiOnly = false;
break;
}
}
}
switch (form) { switch (form) {
case NFC : case NFC :
return NFC.normalize(str, options); return asciiOnly ? str : NFC.normalize(str, options);
case NFD : case NFD :
return NFD.normalize(str, options); return asciiOnly ? str : NFD.normalize(str, options);
case NFKC : case NFKC :
return NFKC.normalize(str, options); return asciiOnly ? str : NFKC.normalize(str, options);
case NFKD : case NFKD :
return NFKD.normalize(str, options); return asciiOnly ? str : NFKD.normalize(str, options);
} }
throw new IllegalArgumentException("Unexpected normalization form: " + throw new IllegalArgumentException("Unexpected normalization form: " +