Merge r21-4-18-chise-0_23-1.

[chise/xemacs-chise.git-] / src / char-1byte.h

diff --git a/src/char-1byte.h b/src/char-1byte.h
new file mode 100644 (file)
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--- /dev/null
+++ b/src/char-1byte.h
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+/* Header for 1-byte character representation.
+   Copyright (C) 1999,2000 MORIOKA Tomohiko
+
+This file is part of XEmacs.
+
+XEmacs is free software; you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the
+Free Software Foundation; either version 2, or (at your option) any
+later version.
+
+XEmacs 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
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with XEmacs; see the file COPYING.  If not, write to
+the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+/* Rewritten by MORIOKA Tomohiko <tomo@m17n.org>. */
+
+#ifndef _XEMACS_CHAR_1BYTE_H
+#define _XEMACS_CHAR_1BYTE_H
+
+#define valid_char_p(ch) ((unsigned int) (ch) <= 0xff)
+
+\f
+/************************************************************************/
+/*                    Definition of leading bytes                       */
+/************************************************************************/
+
+typedef unsigned char Charset_ID;
+
+#define MIN_LEADING_BYTE 0x80
+#define LEADING_BYTE_ASCII 0x80
+#define NUM_LEADING_BYTES 1
+
+#define Vcharset_ascii Qnil
+#define Vcharset_control_1 Qnil
+#define Vcharset_latin_iso8859_1 Qnil
+
+\f
+/************************************************************************/
+/*            Information about a particular character set              */
+/************************************************************************/
+
+#define CHARSETP(cs) 1
+#define CHARSET_BY_LEADING_BYTE(lb) Vcharset_ascii
+#define XCHARSET_LEADING_BYTE(cs) LEADING_BYTE_ASCII
+#define XCHARSET_GRAPHIC(cs) -1
+#define XCHARSET_COLUMNS(cs) 1
+#define XCHARSET_DIMENSION(cs) 1
+
+\f
+/************************************************************************/
+/*                        Dealing with characters                       */
+/************************************************************************/
+
+INLINE_HEADER Emchar DECODE_CHAR (Lisp_Object charset, int code_point);
+INLINE_HEADER Emchar
+DECODE_CHAR (Lisp_Object charset, int code_point)
+{
+  return code_point;
+}
+
+INLINE_HEADER int encode_char_1 (Emchar ch, Lisp_Object* charset);
+INLINE_HEADER int
+encode_char_1 (Emchar ch, Lisp_Object* charset)
+{
+  *charset = Vcharset_ascii;
+  return  ch;
+}
+
+#define ENCODE_CHAR(ch, charset)       encode_char_1 (ch, &(charset))
+
+#define CHAR_CHARSET(ch) Vcharset_ascii
+#define CHAR_LEADING_BYTE(ch) LEADING_BYTE_ASCII
+
+#define BREAKUP_CHAR(ch, charset, byte1, byte2) do {   \
+  (charset) = Vcharset_ascii;                          \
+  (byte1) = (ch);                                      \
+  (byte2) = 0;                                         \
+} while (0)
+
+
+typedef struct Charc
+{
+  Lisp_Object charset;
+  unsigned char code_point;
+} Charc;
+
+INLINE_HEADER Charc CHAR_TO_CHARC (Emchar ch);
+INLINE_HEADER Charc
+CHAR_TO_CHARC (Emchar ch)
+{
+  Charc cc;
+
+  cc.charset = Vcharset_ascii;
+  cc.code_point = ch;
+  return cc;
+}
+
+\f
+/************************************************************************/
+/*                            Exported functions                        */
+/************************************************************************/
+
+#endif /* _XEMACS_CHAR_1BYTE_H */