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jeremybenn |
/* Copyright (C) 2000, 2001, 2005 Free Software Foundation
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This file is part of libgcj.
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This software is copyrighted work licensed under the terms of the
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Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
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details. */
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/* This is a base class that handles aliasing issues for
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UnicodeToBytes to BytesToUnicode. */
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package gnu.gcj.convert;
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import java.util.Hashtable;
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public abstract class IOConverter
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{
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// Map encoding aliases to our canonical form.
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static private Hashtable hash = new Hashtable ();
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// True if we have to do byte-order conversions on iconv()
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// arguments.
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static protected boolean iconv_byte_swap;
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static
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{
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// Manually maintained aliases. Note that the value must be our
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// canonical name.
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hash.put ("iso-latin-1", "8859_1");
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hash.put ("iso8859_1", "8859_1");
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hash.put ("utf-16le", "UnicodeLittle");
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hash.put ("utf-16be", "UnicodeBig");
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// At least one build script out there uses 'utf8'.
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hash.put ("utf8", "UTF8");
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// On Solaris the default encoding, as returned by nl_langinfo(),
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// is `646' (aka ASCII), but the Solaris iconv_open() doesn't
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// understand that. We work around the problem by adding an
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// explicit alias for Solaris users.
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hash.put ("646", "ASCII");
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// See PR 24552, PR 14358.
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hash.put ("euc_jp", "EUCJIS");
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hash.put ("eucjp", "EUCJIS");
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// All aliases after this point are automatically generated by the
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// `encodings.pl' script. Run it to make any corrections.
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hash.put ("ansi_x3.4-1968", "ASCII");
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hash.put ("ansi_x3.4-1986", "ASCII");
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hash.put ("ascii", "ASCII");
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hash.put ("cp367", "ASCII");
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hash.put ("cp819", "8859_1");
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hash.put ("csascii", "ASCII");
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hash.put ("cseucpkdfmtjapanese", "EUCJIS");
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hash.put ("csisolatin1", "8859_1");
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hash.put ("csshiftjis", "SJIS");
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hash.put ("euc-jp", "EUCJIS");
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hash.put ("extended_unix_code_packed_format_for_japanese", "EUCJIS");
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hash.put ("ibm367", "ASCII");
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hash.put ("ibm819", "8859_1");
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hash.put ("iso-8859-1", "8859_1");
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hash.put ("iso-ir-100", "8859_1");
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hash.put ("iso-ir-6", "ASCII");
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hash.put ("iso646-us", "ASCII");
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hash.put ("iso_646.irv:1991", "ASCII");
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hash.put ("iso_8859-1", "8859_1");
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hash.put ("iso_8859-1:1987", "8859_1");
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hash.put ("l1", "8859_1");
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hash.put ("latin1", "8859_1");
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hash.put ("ms_kanji", "SJIS");
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hash.put ("shift_jis", "SJIS");
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hash.put ("us", "ASCII");
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hash.put ("us-ascii", "ASCII");
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hash.put ("utf-8", "UTF8");
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hash.put ("utf16-be", "UnicodeBig");
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hash.put ("utf16-le", "UnicodeLittle");
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// End script-generated section.
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iconv_byte_swap = iconv_init ();
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}
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private static native boolean iconv_init ();
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// Turn an alias into the canonical form.
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protected static final String canonicalize (String name)
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{
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String c = (String) hash.get (name.toLowerCase ());
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return c == null ? name : c;
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}
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}
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