8187443: Forest Consolidation: Move files to unified layout

Reviewed-by: darcy, ihse

src/java.base/share/classes/java/util/zip/ZipCoder.java

@@ -0,0 +1,166 @@
+/*
+ * Copyright (c) 2009, 2011, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package java.util.zip;
+
+import java.nio.ByteBuffer;
+import java.nio.CharBuffer;
+import java.nio.charset.Charset;
+import java.nio.charset.StandardCharsets;
+import java.nio.charset.CharsetDecoder;
+import java.nio.charset.CharsetEncoder;
+import java.nio.charset.CoderResult;
+import java.nio.charset.CodingErrorAction;
+import java.util.Arrays;
+import sun.nio.cs.ArrayDecoder;
+import sun.nio.cs.ArrayEncoder;
+
+/**
+ * Utility class for zipfile name and comment decoding and encoding
+ */
+
+final class ZipCoder {
+
+    String toString(byte[] ba, int off, int length) {
+        CharsetDecoder cd = decoder().reset();
+        int len = (int)(length * cd.maxCharsPerByte());
+        char[] ca = new char[len];
+        if (len == 0)
+            return new String(ca);
+        // UTF-8 only for now. Other ArrayDeocder only handles
+        // CodingErrorAction.REPLACE mode. ZipCoder uses
+        // REPORT mode.
+        if (isUTF8 && cd instanceof ArrayDecoder) {
+            int clen = ((ArrayDecoder)cd).decode(ba, off, length, ca);
+            if (clen == -1)    // malformed
+                throw new IllegalArgumentException("MALFORMED");
+            return new String(ca, 0, clen);
+        }
+        ByteBuffer bb = ByteBuffer.wrap(ba, off, length);
+        CharBuffer cb = CharBuffer.wrap(ca);
+        CoderResult cr = cd.decode(bb, cb, true);
+        if (!cr.isUnderflow())
+            throw new IllegalArgumentException(cr.toString());
+        cr = cd.flush(cb);
+        if (!cr.isUnderflow())
+            throw new IllegalArgumentException(cr.toString());
+        return new String(ca, 0, cb.position());
+    }
+
+    String toString(byte[] ba, int length) {
+        return toString(ba, 0, length);
+    }
+
+    String toString(byte[] ba) {
+        return toString(ba, 0, ba.length);
+    }
+
+    byte[] getBytes(String s) {
+        CharsetEncoder ce = encoder().reset();
+        char[] ca = s.toCharArray();
+        int len = (int)(ca.length * ce.maxBytesPerChar());
+        byte[] ba = new byte[len];
+        if (len == 0)
+            return ba;
+        // UTF-8 only for now. Other ArrayDeocder only handles
+        // CodingErrorAction.REPLACE mode.
+        if (isUTF8 && ce instanceof ArrayEncoder) {
+            int blen = ((ArrayEncoder)ce).encode(ca, 0, ca.length, ba);
+            if (blen == -1)    // malformed
+                throw new IllegalArgumentException("MALFORMED");
+            return Arrays.copyOf(ba, blen);
+        }
+        ByteBuffer bb = ByteBuffer.wrap(ba);
+        CharBuffer cb = CharBuffer.wrap(ca);
+        CoderResult cr = ce.encode(cb, bb, true);
+        if (!cr.isUnderflow())
+            throw new IllegalArgumentException(cr.toString());
+        cr = ce.flush(bb);
+        if (!cr.isUnderflow())
+            throw new IllegalArgumentException(cr.toString());
+        if (bb.position() == ba.length)  // defensive copy?
+            return ba;
+        else
+            return Arrays.copyOf(ba, bb.position());
+    }
+
+    // assume invoked only if "this" is not utf8
+    byte[] getBytesUTF8(String s) {
+        if (isUTF8)
+            return getBytes(s);
+        if (utf8 == null)
+            utf8 = new ZipCoder(StandardCharsets.UTF_8);
+        return utf8.getBytes(s);
+    }
+
+    String toStringUTF8(byte[] ba, int len) {
+        return toStringUTF8(ba, 0, len);
+    }
+
+    String toStringUTF8(byte[] ba, int off, int len) {
+        if (isUTF8)
+            return toString(ba, off, len);
+        if (utf8 == null)
+            utf8 = new ZipCoder(StandardCharsets.UTF_8);
+        return utf8.toString(ba, off, len);
+    }
+
+    boolean isUTF8() {
+        return isUTF8;
+    }
+
+    private Charset cs;
+    private CharsetDecoder dec;
+    private CharsetEncoder enc;
+    private boolean isUTF8;
+    private ZipCoder utf8;
+
+    private ZipCoder(Charset cs) {
+        this.cs = cs;
+        this.isUTF8 = cs.name().equals(StandardCharsets.UTF_8.name());
+    }
+
+    static ZipCoder get(Charset charset) {
+        return new ZipCoder(charset);
+    }
+
+    private CharsetDecoder decoder() {
+        if (dec == null) {
+            dec = cs.newDecoder()
+              .onMalformedInput(CodingErrorAction.REPORT)
+              .onUnmappableCharacter(CodingErrorAction.REPORT);
+        }
+        return dec;
+    }
+
+    private CharsetEncoder encoder() {
+        if (enc == null) {
+            enc = cs.newEncoder()
+              .onMalformedInput(CodingErrorAction.REPORT)
+              .onUnmappableCharacter(CodingErrorAction.REPORT);
+        }
+        return enc;
+    }
+}