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/*
* Copyright 2013 Google Inc.
*
* 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.
*/
package com.google.common.jimfs;
import static com.google.common.base.Preconditions.checkArgument;
import java.nio.file.InvalidPathException;
import org.checkerframework.checker.nullness.compatqual.NullableDecl;
/**
* Unix-style path type.
*
* @author Colin Decker
*/
final class UnixPathType extends PathType {
/** Unix path type. */
static final PathType INSTANCE = new UnixPathType();
private UnixPathType() {
super(false, '/');
}
@Override
public ParseResult parsePath(String path) {
if (path.isEmpty()) {
return emptyPath();
}
checkValid(path);
String root = path.startsWith("/") ? "/" : null;
return new ParseResult(root, splitter().split(path));
}
private static void checkValid(String path) {
int nulIndex = path.indexOf('\0');
if (nulIndex != -1) {
throw new InvalidPathException(path, "nul character not allowed", nulIndex);
}
}
@Override
public String toString(@NullableDecl String root, Iterable<String> names) {
StringBuilder builder = new StringBuilder();
if (root != null) {
builder.append(root);
}
joiner().appendTo(builder, names);
return builder.toString();
}
@Override
public String toUriPath(String root, Iterable<String> names, boolean directory) {
StringBuilder builder = new StringBuilder();
for (String name : names) {
builder.append('/').append(name);
}
if (directory || builder.length() == 0) {
builder.append('/');
}
return builder.toString();
}
@Override
public ParseResult parseUriPath(String uriPath) {
checkArgument(uriPath.startsWith("/"), "uriPath (%s) must start with /", uriPath);
return parsePath(uriPath);
}
}
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