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HttpComponents Core Source Code Files
HttpComponents Core Source Code Files are provided in the source package file, httpcomponents-core-5.2-src.zip.
You can download httpcomponents-core-5.2-src.zip as described in the previous tutorial and go to the "httpcore5/src" sub-folder to view Source Code files.
You can also browse HttpComponents Core Source Code below:
✍: FYIcenter.com
⏎ org/apache/hc/core5/util/Tokenizer.java
/* * ==================================================================== * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you 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. * ==================================================================== * * This software consists of voluntary contributions made by many * individuals on behalf of the Apache Software Foundation. For more * information on the Apache Software Foundation, please see * <http://www.apache.org/>. * */ package org.apache.hc.core5.util; import java.util.BitSet; import org.apache.hc.core5.annotation.Contract; import org.apache.hc.core5.annotation.ThreadingBehavior; /** * Tokenizer that can be used as a foundation for more complex parsing routines. * Methods of this class are designed to produce near zero intermediate garbage * and make no intermediate copies of input data. * <p> * This class is immutable and thread safe. * * @since 5.1 */ @Contract(threading = ThreadingBehavior.IMMUTABLE) public class Tokenizer { public static class Cursor { private final int lowerBound; private final int upperBound; private int pos; public Cursor(final int lowerBound, final int upperBound) { super(); Args.notNegative(lowerBound, "lowerBound"); Args.check(lowerBound <= upperBound, "lowerBound cannot be greater than upperBound"); this.lowerBound = lowerBound; this.upperBound = upperBound; this.pos = lowerBound; } public int getLowerBound() { return this.lowerBound; } public int getUpperBound() { return this.upperBound; } public int getPos() { return this.pos; } public void updatePos(final int pos) { Args.check(pos >= this.lowerBound, "pos: %s < lowerBound: %s", pos, this.lowerBound); Args.check(pos <= this.upperBound, "pos: %s > upperBound: %s", pos, this.upperBound); this.pos = pos; } public boolean atEnd() { return this.pos >= this.upperBound; } @Override public String toString() { final StringBuilder buffer = new StringBuilder(); buffer.append('['); buffer.append(this.lowerBound); buffer.append('>'); buffer.append(this.pos); buffer.append('>'); buffer.append(this.upperBound); buffer.append(']'); return buffer.toString(); } } public static BitSet INIT_BITSET(final int ... b) { final BitSet bitset = new BitSet(); for (final int aB : b) { bitset.set(aB); } return bitset; } /** Double quote */ public static final char DQUOTE = '\"'; /** Backward slash / escape character */ public static final char ESCAPE = '\\'; public static final int CR = 13; // <US-ASCII CR, carriage return (13)> public static final int LF = 10; // <US-ASCII LF, linefeed (10)> public static final int SP = 32; // <US-ASCII SP, space (32)> public static final int HT = 9; // <US-ASCII HT, horizontal-tab (9)> public static boolean isWhitespace(final char ch) { return ch == SP || ch == HT || ch == CR || ch == LF; } public static final Tokenizer INSTANCE = new Tokenizer(); /** * Extracts from the sequence of chars a token terminated with any of the given delimiters * or a whitespace characters. * * @param buf buffer with the sequence of chars to be parsed * @param cursor defines the bounds and current position of the buffer * @param delimiters set of delimiting characters. Can be {@code null} if the token * is not delimited by any character. */ public String parseContent(final CharSequence buf, final Cursor cursor, final BitSet delimiters) { Args.notNull(buf, "Char sequence"); Args.notNull(cursor, "Parser cursor"); final StringBuilder dst = new StringBuilder(); copyContent(buf, cursor, delimiters, dst); return dst.toString(); } /** * Extracts from the sequence of chars a token terminated with any of the given delimiters * discarding semantically insignificant whitespace characters. * * @param buf buffer with the sequence of chars to be parsed * @param cursor defines the bounds and current position of the buffer * @param delimiters set of delimiting characters. Can be {@code null} if the token * is not delimited by any character. */ public String parseToken(final CharSequence buf, final Cursor cursor, final BitSet delimiters) { Args.notNull(buf, "Char sequence"); Args.notNull(cursor, "Parser cursor"); final StringBuilder dst = new StringBuilder(); boolean whitespace = false; while (!cursor.atEnd()) { final char current = buf.charAt(cursor.getPos()); if (delimiters != null && delimiters.get(current)) { break; } else if (isWhitespace(current)) { skipWhiteSpace(buf, cursor); whitespace = true; } else { if (whitespace && dst.length() > 0) { dst.append(' '); } copyContent(buf, cursor, delimiters, dst); whitespace = false; } } return dst.toString(); } /** * Extracts from the sequence of chars a value which can be enclosed in quote marks and * terminated with any of the given delimiters discarding semantically insignificant * whitespace characters. * * @param buf buffer with the sequence of chars to be parsed * @param cursor defines the bounds and current position of the buffer * @param delimiters set of delimiting characters. Can be {@code null} if the value * is not delimited by any character. */ public String parseValue(final CharSequence buf, final Cursor cursor, final BitSet delimiters) { Args.notNull(buf, "Char sequence"); Args.notNull(cursor, "Parser cursor"); final StringBuilder dst = new StringBuilder(); boolean whitespace = false; while (!cursor.atEnd()) { final char current = buf.charAt(cursor.getPos()); if (delimiters != null && delimiters.get(current)) { break; } else if (isWhitespace(current)) { skipWhiteSpace(buf, cursor); whitespace = true; } else if (current == DQUOTE) { if (whitespace && dst.length() > 0) { dst.append(' '); } copyQuotedContent(buf, cursor, dst); whitespace = false; } else { if (whitespace && dst.length() > 0) { dst.append(' '); } copyUnquotedContent(buf, cursor, delimiters, dst); whitespace = false; } } return dst.toString(); } /** * Skips semantically insignificant whitespace characters and moves the cursor to the closest * non-whitespace character. * * @param buf buffer with the sequence of chars to be parsed * @param cursor defines the bounds and current position of the buffer */ public void skipWhiteSpace(final CharSequence buf, final Cursor cursor) { Args.notNull(buf, "Char sequence"); Args.notNull(cursor, "Parser cursor"); int pos = cursor.getPos(); final int indexFrom = cursor.getPos(); final int indexTo = cursor.getUpperBound(); for (int i = indexFrom; i < indexTo; i++) { final char current = buf.charAt(i); if (!isWhitespace(current)) { break; } pos++; } cursor.updatePos(pos); } /** * Transfers content into the destination buffer until a whitespace character or any of * the given delimiters is encountered. * * @param buf buffer with the sequence of chars to be parsed * @param cursor defines the bounds and current position of the buffer * @param delimiters set of delimiting characters. Can be {@code null} if the value * is delimited by a whitespace only. * @param dst destination buffer */ public void copyContent(final CharSequence buf, final Cursor cursor, final BitSet delimiters, final StringBuilder dst) { Args.notNull(buf, "Char sequence"); Args.notNull(cursor, "Parser cursor"); Args.notNull(dst, "String builder"); int pos = cursor.getPos(); final int indexFrom = cursor.getPos(); final int indexTo = cursor.getUpperBound(); for (int i = indexFrom; i < indexTo; i++) { final char current = buf.charAt(i); if ((delimiters != null && delimiters.get(current)) || isWhitespace(current)) { break; } pos++; dst.append(current); } cursor.updatePos(pos); } /** * Transfers content into the destination buffer until a whitespace character, a quote, * or any of the given delimiters is encountered. * * @param buf buffer with the sequence of chars to be parsed * @param cursor defines the bounds and current position of the buffer * @param delimiters set of delimiting characters. Can be {@code null} if the value * is delimited by a whitespace or a quote only. * @param dst destination buffer */ public void copyUnquotedContent(final CharSequence buf, final Cursor cursor, final BitSet delimiters, final StringBuilder dst) { Args.notNull(buf, "Char sequence"); Args.notNull(cursor, "Parser cursor"); Args.notNull(dst, "String builder"); int pos = cursor.getPos(); final int indexFrom = cursor.getPos(); final int indexTo = cursor.getUpperBound(); for (int i = indexFrom; i < indexTo; i++) { final char current = buf.charAt(i); if ((delimiters != null && delimiters.get(current)) || isWhitespace(current) || current == DQUOTE) { break; } pos++; dst.append(current); } cursor.updatePos(pos); } /** * Transfers content enclosed with quote marks into the destination buffer. * * @param buf buffer with the sequence of chars to be parsed * @param cursor defines the bounds and current position of the buffer * @param dst destination buffer */ public void copyQuotedContent(final CharSequence buf, final Cursor cursor, final StringBuilder dst) { Args.notNull(buf, "Char sequence"); Args.notNull(cursor, "Parser cursor"); Args.notNull(dst, "String builder"); if (cursor.atEnd()) { return; } int pos = cursor.getPos(); int indexFrom = cursor.getPos(); final int indexTo = cursor.getUpperBound(); char current = buf.charAt(pos); if (current != DQUOTE) { return; } pos++; indexFrom++; boolean escaped = false; for (int i = indexFrom; i < indexTo; i++, pos++) { current = buf.charAt(i); if (escaped) { if (current != DQUOTE && current != ESCAPE) { dst.append(ESCAPE); } dst.append(current); escaped = false; } else { if (current == DQUOTE) { pos++; break; } if (current == ESCAPE) { escaped = true; } else if (current != CR && current != LF) { dst.append(current); } } } cursor.updatePos(pos); } }
⏎ org/apache/hc/core5/util/Tokenizer.java
Or download all them as a single archive file:
File name: httpcore5-5.2-fyi.zip File size: 812477 bytes Release date: 2022-11-10 Download
⇒ Donwload httpcomponents-client-4.5.3-bin.zip
⇐ Download and Install HttpComponents Core Source Package
2023-03-07, 18354👍, 0💬
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