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S3Escaper.java
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76 lines (67 loc) · 2.11 KB
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/*
* MinIO Java SDK for Amazon S3 Compatible Cloud Storage, (C) 2016 MinIO, 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 io.minio;
import com.google.common.escape.Escaper;
import com.google.common.net.UrlEscapers;
class S3Escaper {
private static final Escaper ESCAPER = UrlEscapers.urlPathSegmentEscaper();
/**
* Returns S3 encoded string.
*/
public static String encode(String str) {
if (str == null) {
return "";
}
return ESCAPER.escape(str)
.replaceAll("\\!", "%21")
.replaceAll("\\$", "%24")
.replaceAll("\\&", "%26")
.replaceAll("\\'", "%27")
.replaceAll("\\(", "%28")
.replaceAll("\\)", "%29")
.replaceAll("\\*", "%2A")
.replaceAll("\\+", "%2B")
.replaceAll("\\,", "%2C")
.replaceAll("\\/", "%2F")
.replaceAll("\\:", "%3A")
.replaceAll("\\;", "%3B")
.replaceAll("\\=", "%3D")
.replaceAll("\\@", "%40")
.replaceAll("\\[", "%5B")
.replaceAll("\\]", "%5D");
}
/**
* Returns S3 encoded string of given path where multiple '/' are trimmed.
*/
public static String encodePath(String path) {
StringBuffer encodedPathBuf = new StringBuffer();
for (String pathSegment : path.split("/")) {
if (!pathSegment.isEmpty()) {
if (encodedPathBuf.length() > 0) {
encodedPathBuf.append("/");
}
encodedPathBuf.append(S3Escaper.encode(pathSegment));
}
}
if (path.startsWith("/")) {
encodedPathBuf.insert(0, "/");
}
if (path.endsWith("/")) {
encodedPathBuf.append("/");
}
return encodedPathBuf.toString();
}
}