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Use own copy of PercentCodec for URI path encoding (#1109)
* Use own copy of PercentCodec for URI path encoding Adapted from Apache HttpComponents HttpCore v5's https://github.com/apache/httpcomponents-core/blob/e009a923eefe79cf3593efbb0c18a3525ae63669/httpcore5/src/main/java/org/apache/hc/core5/net/PercentCodec.java Signed-off-by: Thomas Farr <[email protected]> * Refactor PercentCodec a bit Signed-off-by: Thomas Farr <[email protected]> * Add change log Signed-off-by: Thomas Farr <[email protected]> * Switch to system property Signed-off-by: Thomas Farr <[email protected]> * spotless Signed-off-by: Thomas Farr <[email protected]> * Add UPGRADING note Signed-off-by: Thomas Farr <[email protected]> --------- Signed-off-by: Thomas Farr <[email protected]>
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180 changes: 180 additions & 0 deletions
180
java-client/src/main/java/org/opensearch/client/util/PercentCodec.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,180 @@ | ||
| /* | ||
| * SPDX-License-Identifier: Apache-2.0 | ||
| * | ||
| * The OpenSearch Contributors require contributions made to | ||
| * this file be licensed under the Apache-2.0 license or a | ||
| * compatible open source license. | ||
| */ | ||
|
|
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| package org.opensearch.client.util; | ||
|
|
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| import java.nio.ByteBuffer; | ||
| import java.nio.CharBuffer; | ||
| import java.nio.charset.Charset; | ||
| import java.nio.charset.StandardCharsets; | ||
| import java.util.BitSet; | ||
|
|
||
| /** | ||
| * Percent-encoding. | ||
| * <p> | ||
| * Adapted from Apache HttpComponents HttpCore v5's <a href="https://github.com/apache/httpcomponents-core/blob/e009a923eefe79cf3593efbb0c18a3525ae63669/httpcore5/src/main/java/org/apache/hc/core5/net/PercentCodec.java">PercentCodec.java</a> | ||
| * </p> | ||
| */ | ||
| class PercentCodec { | ||
| private static class Chars { | ||
| private final BitSet set = new BitSet(256); | ||
|
|
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| public void add(char... chars) { | ||
| for (char c : chars) { | ||
| set.set(c); | ||
| } | ||
| } | ||
|
|
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| public void addRange(char start, char end) { | ||
| set.set(start, end + 1); | ||
| } | ||
|
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| public void add(Chars set) { | ||
| this.set.or(set.set); | ||
| } | ||
|
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| public boolean contains(int c) { | ||
| return set.get(c); | ||
| } | ||
| } | ||
|
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| private static final Chars RFC3986_GEN_DELIMS_CHARS = new Chars() { | ||
| { | ||
| add(':', '/', '?', '#', '[', ']', '@'); | ||
| } | ||
| }; | ||
| private static final Chars RFC3986_SUB_DELIMS_CHARS = new Chars() { | ||
| { | ||
| add('!', '$', '&', '\'', '(', ')', '*', '+', ',', ';', '='); | ||
| } | ||
| }; | ||
| private static final Chars RFC3986_UNRESERVED_CHARS = new Chars() { | ||
| { | ||
| addRange('a', 'z'); | ||
| addRange('A', 'Z'); | ||
| addRange('0', '9'); | ||
| add('-', '.', '_', '~'); | ||
| } | ||
| }; | ||
| private static final Chars RFC3986_PATH_NO_COLON_CHARS = new Chars() { | ||
| { | ||
| add(RFC3986_UNRESERVED_CHARS); | ||
| add(RFC3986_SUB_DELIMS_CHARS); | ||
| add('@'); | ||
| } | ||
| }; | ||
| private static final Chars RFC3986_PATH_CHARS = new Chars() { | ||
| { | ||
| add(RFC3986_PATH_NO_COLON_CHARS); | ||
| add(':'); | ||
| } | ||
| }; | ||
| private static final Chars RFC3986_URIC_CHARS = new Chars() { | ||
| { | ||
| add(RFC3986_SUB_DELIMS_CHARS); | ||
| add(RFC3986_UNRESERVED_CHARS); | ||
| } | ||
| }; | ||
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| private static final Chars RFC5987_UNRESERVED_CHARS = new Chars() { | ||
| { | ||
| addRange('a', 'z'); | ||
| addRange('A', 'Z'); | ||
| addRange('0', '9'); | ||
| // Additional characters as per RFC 5987 attr-char | ||
| add('!', '#', '$', '&', '+', '-', '.', '^', '_', '`', '|', '~'); | ||
| } | ||
| }; | ||
|
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| private static final int RADIX = 16; | ||
|
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| private static void encode( | ||
| final StringBuilder buf, | ||
| final CharSequence content, | ||
| final Charset charset, | ||
| final Chars safeChars, | ||
| final boolean blankAsPlus | ||
| ) { | ||
| if (content == null) { | ||
| return; | ||
| } | ||
| final CharBuffer cb = CharBuffer.wrap(content); | ||
| final ByteBuffer bb = (charset != null ? charset : StandardCharsets.UTF_8).encode(cb); | ||
| while (bb.hasRemaining()) { | ||
| final int b = bb.get() & 0xff; | ||
| if (safeChars.contains(b)) { | ||
| buf.append((char) b); | ||
| } else if (blankAsPlus && b == ' ') { | ||
| buf.append("+"); | ||
| } else { | ||
| buf.append("%"); | ||
| final char hex1 = Character.toUpperCase(Character.forDigit((b >> 4) & 0xF, RADIX)); | ||
| final char hex2 = Character.toUpperCase(Character.forDigit(b & 0xF, RADIX)); | ||
| buf.append(hex1); | ||
| buf.append(hex2); | ||
| } | ||
| } | ||
| } | ||
|
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| private static String decode(final CharSequence content, final Charset charset, final boolean plusAsBlank) { | ||
| if (content == null) { | ||
| return null; | ||
| } | ||
| final ByteBuffer bb = ByteBuffer.allocate(content.length()); | ||
| final CharBuffer cb = CharBuffer.wrap(content); | ||
| while (cb.hasRemaining()) { | ||
| final char c = cb.get(); | ||
| if (c == '%' && cb.remaining() >= 2) { | ||
| final char uc = cb.get(); | ||
| final char lc = cb.get(); | ||
| final int u = Character.digit(uc, RADIX); | ||
| final int l = Character.digit(lc, RADIX); | ||
| if (u != -1 && l != -1) { | ||
| bb.put((byte) ((u << 4) + l)); | ||
| } else { | ||
| bb.put((byte) '%'); | ||
| bb.put((byte) uc); | ||
| bb.put((byte) lc); | ||
| } | ||
| } else if (plusAsBlank && c == '+') { | ||
| bb.put((byte) ' '); | ||
| } else { | ||
| bb.put((byte) c); | ||
| } | ||
| } | ||
| bb.flip(); | ||
| return (charset != null ? charset : StandardCharsets.UTF_8).decode(bb).toString(); | ||
| } | ||
|
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| public static final PercentCodec RFC3986_UNRESERVED = new PercentCodec(RFC3986_UNRESERVED_CHARS); | ||
| public static final PercentCodec RFC3986_PATH = new PercentCodec(RFC3986_PATH_CHARS); | ||
| public static final PercentCodec RFC5987_UNRESERVED = new PercentCodec(RFC5987_UNRESERVED_CHARS); | ||
|
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| private final Chars unreserved; | ||
|
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| private PercentCodec(final Chars unreserved) { | ||
| this.unreserved = unreserved; | ||
| } | ||
|
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| public void encode(final StringBuilder buf, final CharSequence content) { | ||
| encode(buf, content, StandardCharsets.UTF_8, unreserved, false); | ||
| } | ||
|
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| public String encode(final CharSequence content) { | ||
| if (content == null) { | ||
| return null; | ||
| } | ||
| final StringBuilder buf = new StringBuilder(); | ||
| encode(buf, content, StandardCharsets.UTF_8, unreserved, false); | ||
| return buf.toString(); | ||
| } | ||
|
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| public String decode(final CharSequence content) { | ||
| return decode(content, StandardCharsets.UTF_8, false); | ||
| } | ||
| } |
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44 changes: 0 additions & 44 deletions
44
java-client/src/test/java/org/opensearch/client/util/PathEncoderTest.java
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