org.openrewrite.hcl.format.RemoveTrailingWhitespaceVisitor Maven / Gradle / Ivy
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/*
* Copyright 2021 the original author or authors.
*
* 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
*
* https://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.
*/
package org.openrewrite.hcl.format;
import org.openrewrite.hcl.HclIsoVisitor;
import org.openrewrite.hcl.tree.Hcl;
import org.openrewrite.hcl.tree.Space;
public class RemoveTrailingWhitespaceVisitor
extends HclIsoVisitor
{
@Override
public Hcl.ConfigFile visitConfigFile(Hcl.ConfigFile cf, P p) {
String eof = cf.getEof().getWhitespace();
eof = eof.chars().filter(c -> c == '\n' || c == '\r')
.collect(StringBuilder::new, StringBuilder::appendCodePoint, StringBuilder::append)
.toString();
Hcl.ConfigFile c = super.visitConfigFile(cf, p);
return c.withEof(c.getEof().withWhitespace(eof));
}
@Override
public Space visitSpace(Space space, Space.Location loc, P p) {
Space s = space;
int lastNewline = s.getWhitespace().lastIndexOf('\n');
if (lastNewline > 0) {
StringBuilder ws = new StringBuilder();
char[] charArray = s.getWhitespace().toCharArray();
for (int i = 0; i < charArray.length; i++) {
char c = charArray[i];
if (i >= lastNewline) {
ws.append(c);
} else if (c == '\r' || c == '\n') {
ws.append(c);
}
}
s = s.withWhitespace(ws.toString());
}
return s;
}
}