| 1 | /* Copyright (C) 2000, 2001 Free Software Foundation
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| 2 |
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| 3 | This file is part of libgcj.
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| 4 |
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| 5 | This software is copyrighted work licensed under the terms of the
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| 6 | Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
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| 7 | details. */
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| 8 |
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| 9 | /* This is a base class that handles aliasing issues for
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| 10 | UnicodeToBytes to BytesToUnicode. */
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| 11 |
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| 12 | package gnu.gcj.convert;
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| 13 |
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| 14 | import java.util.Hashtable;
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| 15 |
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| 16 | public abstract class IOConverter
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| 17 | {
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| 18 | // Map encoding aliases to our canonical form.
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| 19 | static private Hashtable hash = new Hashtable ();
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| 20 |
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| 21 | // True if we have to do byte-order conversions on iconv()
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| 22 | // arguments.
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| 23 | static protected boolean iconv_byte_swap;
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| 24 |
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| 25 | static
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| 26 | {
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| 27 | // Manually maintained aliases. Note that the value must be our
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| 28 | // canonical name.
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| 29 | hash.put ("iso-latin-1", "8859_1");
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| 30 | hash.put ("iso8859_1", "8859_1");
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| 31 | // On Solaris the default encoding, as returned by nl_langinfo(),
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| 32 | // is `646' (aka ASCII), but the Solaris iconv_open() doesn't
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| 33 | // understand that. We work around the problem by adding an
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| 34 | // explicit alias for Solaris users.
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| 35 | hash.put ("646", "ASCII");
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| 36 | // All aliases after this point are automatically generated by the
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| 37 | // `encodings.pl' script. Run it to make any corrections.
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| 38 | hash.put ("ansi_x3.4-1968", "ASCII");
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| 39 | hash.put ("iso-ir-6", "ASCII");
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| 40 | hash.put ("ansi_x3.4-1986", "ASCII");
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| 41 | hash.put ("iso_646.irv:1991", "ASCII");
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| 42 | hash.put ("ascii", "ASCII");
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| 43 | hash.put ("iso646-us", "ASCII");
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| 44 | hash.put ("us-ascii", "ASCII");
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| 45 | hash.put ("us", "ASCII");
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| 46 | hash.put ("ibm367", "ASCII");
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| 47 | hash.put ("cp367", "ASCII");
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| 48 | hash.put ("csascii", "ASCII");
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| 49 | hash.put ("iso_8859-1:1987", "8859_1");
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| 50 | hash.put ("iso-ir-100", "8859_1");
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| 51 | hash.put ("iso_8859-1", "8859_1");
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| 52 | hash.put ("iso-8859-1", "8859_1");
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| 53 | hash.put ("latin1", "8859_1");
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| 54 | hash.put ("l1", "8859_1");
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| 55 | hash.put ("ibm819", "8859_1");
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| 56 | hash.put ("cp819", "8859_1");
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| 57 | hash.put ("csisolatin1", "8859_1");
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| 58 | hash.put ("utf-8", "UTF8");
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| 59 | hash.put ("none", "UTF8");
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| 60 | hash.put ("shift_jis", "SJIS");
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| 61 | hash.put ("ms_kanji", "SJIS");
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| 62 | hash.put ("csshiftjis", "SJIS");
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| 63 | hash.put ("extended_unix_code_packed_format_for_japanese", "EUCJIS");
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| 64 | hash.put ("cseucpkdfmtjapanese", "EUCJIS");
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| 65 | hash.put ("euc-jp", "EUCJIS");
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| 66 |
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| 67 | iconv_byte_swap = iconv_init ();
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| 68 | }
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| 69 |
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| 70 | private static native boolean iconv_init ();
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| 71 |
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| 72 | // Turn an alias into the canonical form.
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| 73 | protected static final String canonicalize (String name)
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| 74 | {
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| 75 | String c = (String) hash.get (name.toLowerCase ());
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| 76 | return c == null ? name : c;
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| 77 | }
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| 78 | }
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