Mega Code Archive
Normalise Whitespace
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/*
* Copyright (C) 2009 Teleca Poland Sp. z o.o. <android@teleca.com>
*
* Licensed 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.
*/
class Main{
public static String normaliseWhitespace(String string) {
StringBuilder sb = new StringBuilder(string.length());
boolean lastWasWhite = false;
boolean modified = false;
int l = string.length();
for (int i = 0; i < l; i++) {
int c = string.codePointAt(i);
if (Character.isWhitespace(c)) {
if (lastWasWhite) {
modified = true;
continue;
}
if (c != ' ')
modified = true;
sb.append(' ');
lastWasWhite = true;
}
else {
sb.appendCodePoint(c);
lastWasWhite = false;
}
}
return modified ? sb.toString() : string;
}
}
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