jdk8-mips64-public/jaxws: src/share/jaxws_classes/com/sun/codemodel/internal/CodeWriter.java@e530533619ec

     1 /*

     2  * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    22  * or visit www.oracle.com if you need additional information or have any

    23  * questions.

    24  */

    26 package com.sun.codemodel.internal;

    28 import java.io.IOException;

    29 import java.io.OutputStream;

    30 import java.io.OutputStreamWriter;

    31 import java.io.Writer;

    32 import java.nio.charset.CharsetEncoder;

    34 import com.sun.codemodel.internal.util.EncoderFactory;

    35 import com.sun.codemodel.internal.util.UnicodeEscapeWriter;

    37 /**

    38  * Receives generated code and writes to the appropriate storage.

    39  *

    40  * @author

    41  *      Kohsuke Kawaguchi (kohsuke.kawaguchi@sun.com)

    42  */

    43 public abstract class CodeWriter {

    45     /**

    46      * Encoding to be used by the writer. Null means platform specific encoding.

    47      *

    48      * @since 2.5

    49      */

    50     protected String encoding = null;

    52     /**

    53      * Called by CodeModel to store the specified file.

    54      * The callee must allocate a storage to store the specified file.

    55      *

    56      * <p>

    57      * The returned stream will be closed before the next file is

    58      * stored. So the callee can assume that only one OutputStream

    59      * is active at any given time.

    60      *

    61      * @param   pkg

    62      *      The package of the file to be written.

    63      * @param   fileName

    64      *      File name without the path. Something like

    65      *      "Foo.java" or "Bar.properties"

    66      */

    67     public abstract OutputStream openBinary( JPackage pkg, String fileName ) throws IOException;

    69     /**

    70      * Called by CodeModel to store the specified file.

    71      * The callee must allocate a storage to store the specified file.

    72      *

    73      * <p>

    74      * The returned stream will be closed before the next file is

    75      * stored. So the callee can assume that only one OutputStream

    76      * is active at any given time.

    77      *

    78      * @param   pkg

    79      *      The package of the file to be written.

    80      * @param   fileName

    81      *      File name without the path. Something like

    82      *      "Foo.java" or "Bar.properties"

    83      */

    84     public Writer openSource( JPackage pkg, String fileName ) throws IOException {

    85         final OutputStreamWriter bw = encoding != null

    86                 ? new OutputStreamWriter(openBinary(pkg,fileName), encoding)

    87                 : new OutputStreamWriter(openBinary(pkg,fileName));

    89         // create writer

    90         try {

    91             return new UnicodeEscapeWriter(bw) {

    92                 // can't change this signature to Encoder because

    93                 // we can't have Encoder in method signature

    94                 private final CharsetEncoder encoder = EncoderFactory.createEncoder(bw.getEncoding());

    95                 @Override

    96                 protected boolean requireEscaping(int ch) {

    97                     // control characters

    98                     if( ch<0x20 && " \t\r\n".indexOf(ch)==-1 )  return true;

    99                     // check ASCII chars, for better performance

   100                     if( ch<0x80 )       return false;

   102                     return !encoder.canEncode((char)ch);

   103                 }

   104             };

   105         } catch( Throwable t ) {

   106             return new UnicodeEscapeWriter(bw);

   107         }

   108     }

   110     /**

   111      * Called by CodeModel at the end of the process.

   112      */

   113     public abstract void close() throws IOException;

   114 }

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