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Diffstat (limited to 'framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/zip/ZipEncodingHelper.java')
-rw-r--r-- | framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/zip/ZipEncodingHelper.java | 252 |
1 files changed, 0 insertions, 252 deletions
diff --git a/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/zip/ZipEncodingHelper.java b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/zip/ZipEncodingHelper.java deleted file mode 100644 index 4d3dab95..00000000 --- a/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/zip/ZipEncodingHelper.java +++ /dev/null @@ -1,252 +0,0 @@ -/* - * 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. - * - */ - -package org.apache.tools.zip; - -import java.nio.ByteBuffer; -import java.nio.charset.Charset; -import java.nio.charset.UnsupportedCharsetException; -import java.util.Collections; -import java.util.HashMap; -import java.util.Map; - -/** - * Static helper functions for robustly encoding filenames in zip files. - */ -public abstract class ZipEncodingHelper { - - /** - * A class, which holds the high characters of a simple encoding - * and lazily instantiates a Simple8BitZipEncoding instance in a - * thread-safe manner. - */ - private static class SimpleEncodingHolder { - - private final char [] highChars; - private Simple8BitZipEncoding encoding; - - /** - * Instantiate a simple encoding holder. - * - * @param highChars The characters for byte codes 128 to 255. - * - * @see Simple8BitZipEncoding#Simple8BitZipEncoding(char[]) - */ - SimpleEncodingHolder(final char [] highChars) { - this.highChars = highChars; - } - - /** - * @return The associated {@link Simple8BitZipEncoding}, which - * is instantiated if not done so far. - */ - public synchronized Simple8BitZipEncoding getEncoding() { - if (this.encoding == null) { - this.encoding = new Simple8BitZipEncoding(this.highChars); - } - return this.encoding; - } - } - - private static final Map<String, SimpleEncodingHolder> simpleEncodings; - - static { - final Map<String, SimpleEncodingHolder> se = - new HashMap<String, SimpleEncodingHolder>(); - - final char[] cp437_high_chars = - new char[] {0x00c7, 0x00fc, 0x00e9, 0x00e2, 0x00e4, 0x00e0, - 0x00e5, 0x00e7, 0x00ea, 0x00eb, 0x00e8, 0x00ef, - 0x00ee, 0x00ec, 0x00c4, 0x00c5, 0x00c9, 0x00e6, - 0x00c6, 0x00f4, 0x00f6, 0x00f2, 0x00fb, 0x00f9, - 0x00ff, 0x00d6, 0x00dc, 0x00a2, 0x00a3, 0x00a5, - 0x20a7, 0x0192, 0x00e1, 0x00ed, 0x00f3, 0x00fa, - 0x00f1, 0x00d1, 0x00aa, 0x00ba, 0x00bf, 0x2310, - 0x00ac, 0x00bd, 0x00bc, 0x00a1, 0x00ab, 0x00bb, - 0x2591, 0x2592, 0x2593, 0x2502, 0x2524, 0x2561, - 0x2562, 0x2556, 0x2555, 0x2563, 0x2551, 0x2557, - 0x255d, 0x255c, 0x255b, 0x2510, 0x2514, 0x2534, - 0x252c, 0x251c, 0x2500, 0x253c, 0x255e, 0x255f, - 0x255a, 0x2554, 0x2569, 0x2566, 0x2560, 0x2550, - 0x256c, 0x2567, 0x2568, 0x2564, 0x2565, 0x2559, - 0x2558, 0x2552, 0x2553, 0x256b, 0x256a, 0x2518, - 0x250c, 0x2588, 0x2584, 0x258c, 0x2590, 0x2580, - 0x03b1, 0x00df, 0x0393, 0x03c0, 0x03a3, 0x03c3, - 0x00b5, 0x03c4, 0x03a6, 0x0398, 0x03a9, 0x03b4, - 0x221e, 0x03c6, 0x03b5, 0x2229, 0x2261, 0x00b1, - 0x2265, 0x2264, 0x2320, 0x2321, 0x00f7, 0x2248, - 0x00b0, 0x2219, 0x00b7, 0x221a, 0x207f, 0x00b2, - 0x25a0, 0x00a0}; - - final SimpleEncodingHolder cp437 = new SimpleEncodingHolder(cp437_high_chars); - - se.put("CP437", cp437); - se.put("Cp437", cp437); - se.put("cp437", cp437); - se.put("IBM437", cp437); - se.put("ibm437", cp437); - - final char[] cp850_high_chars = - new char[] {0x00c7, 0x00fc, 0x00e9, 0x00e2, 0x00e4, 0x00e0, - 0x00e5, 0x00e7, 0x00ea, 0x00eb, 0x00e8, 0x00ef, - 0x00ee, 0x00ec, 0x00c4, 0x00c5, 0x00c9, 0x00e6, - 0x00c6, 0x00f4, 0x00f6, 0x00f2, 0x00fb, 0x00f9, - 0x00ff, 0x00d6, 0x00dc, 0x00f8, 0x00a3, 0x00d8, - 0x00d7, 0x0192, 0x00e1, 0x00ed, 0x00f3, 0x00fa, - 0x00f1, 0x00d1, 0x00aa, 0x00ba, 0x00bf, 0x00ae, - 0x00ac, 0x00bd, 0x00bc, 0x00a1, 0x00ab, 0x00bb, - 0x2591, 0x2592, 0x2593, 0x2502, 0x2524, 0x00c1, - 0x00c2, 0x00c0, 0x00a9, 0x2563, 0x2551, 0x2557, - 0x255d, 0x00a2, 0x00a5, 0x2510, 0x2514, 0x2534, - 0x252c, 0x251c, 0x2500, 0x253c, 0x00e3, 0x00c3, - 0x255a, 0x2554, 0x2569, 0x2566, 0x2560, 0x2550, - 0x256c, 0x00a4, 0x00f0, 0x00d0, 0x00ca, 0x00cb, - 0x00c8, 0x0131, 0x00cd, 0x00ce, 0x00cf, 0x2518, - 0x250c, 0x2588, 0x2584, 0x00a6, 0x00cc, 0x2580, - 0x00d3, 0x00df, 0x00d4, 0x00d2, 0x00f5, 0x00d5, - 0x00b5, 0x00fe, 0x00de, 0x00da, 0x00db, 0x00d9, - 0x00fd, 0x00dd, 0x00af, 0x00b4, 0x00ad, 0x00b1, - 0x2017, 0x00be, 0x00b6, 0x00a7, 0x00f7, 0x00b8, - 0x00b0, 0x00a8, 0x00b7, 0x00b9, 0x00b3, 0x00b2, - 0x25a0, 0x00a0}; - - final SimpleEncodingHolder cp850 = new SimpleEncodingHolder(cp850_high_chars); - - se.put("CP850", cp850); - se.put("Cp850", cp850); - se.put("cp850", cp850); - se.put("IBM850", cp850); - se.put("ibm850", cp850); - simpleEncodings = Collections.unmodifiableMap(se); - } - - /** - * Grow a byte buffer, so it has a minimal capacity or at least - * the double capacity of the original buffer - * - * @param b The original buffer. - * @param newCapacity The minimal requested new capacity. - * @return A byte buffer <code>r</code> with - * <code>r.capacity() = max(b.capacity()*2,newCapacity)</code> and - * all the data contained in <code>b</code> copied to the beginning - * of <code>r</code>. - * - */ - static ByteBuffer growBuffer(final ByteBuffer b, final int newCapacity) { - b.limit(b.position()); - b.rewind(); - - final int c2 = b.capacity() * 2; - final ByteBuffer on = ByteBuffer.allocate(c2 < newCapacity ? newCapacity : c2); - - on.put(b); - return on; - } - - - /** - * The hexadecimal digits <code>0,...,9,A,...,F</code> encoded as - * ASCII bytes. - */ - private static final byte[] HEX_DIGITS = - new byte [] { - 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x41, - 0x42, 0x43, 0x44, 0x45, 0x46 - }; - - /** - * Append <code>%Uxxxx</code> to the given byte buffer. - * The caller must assure, that <code>bb.remaining()>=6</code>. - * - * @param bb The byte buffer to write to. - * @param c The character to write. - */ - static void appendSurrogate(final ByteBuffer bb, final char c) { - - bb.put((byte) '%'); - bb.put((byte) 'U'); - - bb.put(HEX_DIGITS[(c >> 12)&0x0f]); - bb.put(HEX_DIGITS[(c >> 8)&0x0f]); - bb.put(HEX_DIGITS[(c >> 4)&0x0f]); - bb.put(HEX_DIGITS[c & 0x0f]); - } - - - /** - * name of the encoding UTF-8 - */ - static final String UTF8 = "UTF8"; - - /** - * variant name of the encoding UTF-8 used for comparisons. - */ - private static final String UTF_DASH_8 = "utf-8"; - - /** - * name of the encoding UTF-8 - */ - static final ZipEncoding UTF8_ZIP_ENCODING = new FallbackZipEncoding(UTF8); - - /** - * Instantiates a zip encoding. - * - * @param name The name of the zip encoding. Specify {@code null} for - * the platform's default encoding. - * @return A zip encoding for the given encoding name. - */ - public static ZipEncoding getZipEncoding(final String name) { - - // fallback encoding is good enough for utf-8. - if (isUTF8(name)) { - return UTF8_ZIP_ENCODING; - } - - if (name == null) { - return new FallbackZipEncoding(); - } - - final SimpleEncodingHolder h = simpleEncodings.get(name); - - if (h!=null) { - return h.getEncoding(); - } - - try { - - final Charset cs = Charset.forName(name); - return new NioZipEncoding(cs); - - } catch (final UnsupportedCharsetException e) { - return new FallbackZipEncoding(name); - } - } - - /** - * Whether a given encoding - or the platform's default encoding - * if the parameter is null - is UTF-8. - */ - static boolean isUTF8(String encoding) { - if (encoding == null) { - // check platform's default encoding - encoding = System.getProperty("file.encoding"); - } - return UTF8.equalsIgnoreCase(encoding) - || UTF_DASH_8.equalsIgnoreCase(encoding); - } -} |