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thodg/libiconv/lib/java.h

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  • Author : Bruno Haible
    Date : 2001-03-20 20:30:41
    Hash : ce4e3740
    Message : Add copyright notice.

  • lib/java.h
  • /*
     * Copyright (C) 1999-2000 Free Software Foundation, Inc.
     * This file is part of the GNU LIBICONV Library.
     *
     * The GNU LIBICONV Library is free software; you can redistribute it
     * and/or modify it under the terms of the GNU Library General Public
     * License as published by the Free Software Foundation; either version 2
     * of the License, or (at your option) any later version.
     *
     * The GNU LIBICONV Library 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
     * Library General Public License for more details.
     *
     * You should have received a copy of the GNU Library General Public
     * License along with the GNU LIBICONV Library; see the file COPYING.LIB.
     * If not, write to the Free Software Foundation, Inc., 59 Temple Place -
     * Suite 330, Boston, MA 02111-1307, USA.
     */
    
    /*
     * JAVA
     * This is ISO 8859-1 with \uXXXX escape sequences, denoting Unicode characters.
     */
    
    static int
    java_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n)
    {
      unsigned char c;
      ucs4_t wc;
      int i;
    
      c = s[0];
      if (c != '\\') {
        *pwc = c;
        return 1;
      }
      if (n < 2)
        return RET_TOOFEW(0);
      if (s[1] != 'u')
        goto simply_backslash;
      wc = 0;
      for (i = 2; i < 6; i++) {
        if (n <= i)
          return RET_TOOFEW(0);
        c = s[i];
        if (c >= '0' && c <= '9')
          c -= '0';
        else if (c >= 'A' && c <= 'Z')
          c -= 'A'-10;
        else if (c >= 'a' && c <= 'z')
          c -= 'a'-10;
        else
          goto simply_backslash;
        wc |= (ucs4_t) c << (4 * (5-i));
      }
      *pwc = wc;
      return 6;
    simply_backslash:
      *pwc = '\\';
      return 1;
    }
    
    static int
    java_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n)
    {
      if (wc < 0x80) {
        *r = wc;
        return 1;
      } else {
        if (n >= 6) {
          unsigned int i;
          r[0] = '\\';
          r[1] = 'u';
          i = (wc >> 12) & 0x0f; r[2] = (i < 10 ? '0'+i : 'a'-10+i);
          i = (wc >> 8) & 0x0f;  r[3] = (i < 10 ? '0'+i : 'a'-10+i);
          i = (wc >> 4) & 0x0f;  r[4] = (i < 10 ? '0'+i : 'a'-10+i);
          i = wc & 0x0f;         r[5] = (i < 10 ? '0'+i : 'a'-10+i);
          return 6;
        } else
          return RET_TOOSMALL;
      }
    }