--- /dev/null
+/* Basic character support.
+ Copyright (C) 1995, 1997, 1998, 2001 Electrotechnical Laboratory, JAPAN.
+ Licensed to the Free Software Foundation.
+ Copyright (C) 2001 Free Software Foundation, Inc.
+ Copyright (C) 2001, 2002
+ National Institute of Advanced Industrial Science and Technology (AIST)
+ Registration Number H13PRO009
+
+This file is part of GNU Emacs.
+
+GNU Emacs 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.
+
+GNU Emacs 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 GNU Emacs; see the file COPYING. If not, write to
+the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
+
+/* At first, see the document in `character.h' to understand the code
+ in this file. */
+
+#ifdef emacs
+#include <config.h>
+#endif
+
+#include <stdio.h>
+
+#ifdef emacs
+
+#include <sys/types.h>
+#include "lisp.h"
+#include "character.h"
+#include "buffer.h"
+#include "charset.h"
+#include "composite.h"
+#include "disptab.h"
+
+#else /* not emacs */
+
+#include "mulelib.h"
+
+#endif /* emacs */
+
+Lisp_Object Qcharacterp;
+
+/* Vector of translation table ever defined.
+ ID of a translation table is used to index this vector. */
+Lisp_Object Vtranslation_table_vector;
+
+/* A char-table for characters which may invoke auto-filling. */
+Lisp_Object Vauto_fill_chars;
+
+Lisp_Object Qauto_fill_chars;
+
+Lisp_Object Vchar_unify_table;
+
+/* A char-table. An element is non-nil iff the corresponding
+ character has a printable glyph. */
+Lisp_Object Vprintable_chars;
+
+/* A char-table. An elemnent is a column-width of the corresponding
+ character. */
+Lisp_Object Vchar_width_table;
+
+/* A char-table. An element is a symbol indicating the direction
+ property of corresponding character. */
+Lisp_Object Vchar_direction_table;
+
+/* Variables used locally in the macro FETCH_MULTIBYTE_CHAR. */
+unsigned char *_fetch_multibyte_char_p;
+int _fetch_multibyte_char_len;
+
+\f
+
+int
+char_string_with_unification (c, p, advanced)
+ int c;
+ unsigned char *p, **advanced;
+{
+ int bytes;
+
+ MAYBE_UNIFY_CHAR (c);
+
+ if (c <= MAX_3_BYTE_CHAR || c > MAX_5_BYTE_CHAR)
+ {
+ bytes = CHAR_STRING (c, p);
+ }
+ else if (c <= MAX_4_BYTE_CHAR)
+ {
+ p[0] = (0xF0 | (c >> 18));
+ p[1] = (0x80 | ((c >> 12) & 0x3F));
+ p[2] = (0x80 | ((c >> 6) & 0x3F));
+ p[3] = (0x80 | (c & 0x3F));
+ bytes = 4;
+ }
+ else
+ {
+ p[0] = 0xF8;
+ p[1] = (0x80 | ((c >> 18) & 0x0F));
+ p[2] = (0x80 | ((c >> 12) & 0x3F));
+ p[3] = (0x80 | ((c >> 6) & 0x3F));
+ p[4] = (0x80 | (c & 0x3F));
+ bytes = 5;
+ }
+ if (advanced)
+ *advanced = p + bytes;
+ return bytes;
+}
+
+
+int
+string_char_with_unification (p, advanced, len)
+ unsigned char *p, **advanced;
+ int *len;
+{
+ int c, unified;
+ unsigned char *saved_p = p;
+
+ if (*p < 0x80 || ! (*p & 0x20) || ! (*p & 0x10))
+ {
+ c = STRING_CHAR_ADVANCE (p);
+ }
+ else if (! (*p & 0x08))
+ {
+ c = ((((p)[0] & 0xF) << 18)
+ | (((p)[1] & 0x3F) << 12)
+ | (((p)[2] & 0x3F) << 6)
+ | ((p)[3] & 0x3F));
+ p += 4;
+ }
+ else
+ {
+ c = ((((p)[1] & 0x3F) << 18)
+ | (((p)[2] & 0x3F) << 12)
+ | (((p)[3] & 0x3F) << 6)
+ | ((p)[4] & 0x3F));
+ p += 5;
+ }
+
+ MAYBE_UNIFY_CHAR (c);
+
+ if (len)
+ *len = p - saved_p;
+ if (advanced)
+ *advanced = p;
+ return c;
+}
+
+
+/* Translate character C by translation table TABLE. If C is
+ negative, translate a character specified by CHARSET and CODE. If
+ no translation is found in TABLE, return the untranslated
+ character. */
+
+int
+translate_char (table, c)
+ Lisp_Object table;
+ int c;
+{
+ Lisp_Object ch;
+
+ if (! CHAR_TABLE_P (table))
+ return c;
+ ch = CHAR_TABLE_REF (table, c);
+ if (! CHARACTERP (ch))
+ return c;
+ return XINT (ch);
+}
+
+/* Convert the unibyte character C to the corresponding multibyte
+ character based on the current value of charset_primary. If C
+ can't be converted, return C. */
+
+int
+unibyte_char_to_multibyte (c)
+ int c;
+{
+ struct charset *charset = CHARSET_FROM_ID (charset_primary);
+ int c1 = DECODE_CHAR (charset, c);
+
+ return ((c1 >= 0) ? c1 : c);
+}
+
+
+/* Convert the multibyte character C to unibyte 8-bit character based
+ on the current value of charset_primary. If dimension of
+ charset_primary is more than one, return (C & 0xFF).
+
+ The argument REV_TBL is now ignored. It will be removed in the
+ future. */
+
+int
+multibyte_char_to_unibyte (c, rev_tbl)
+ int c;
+ Lisp_Object rev_tbl;
+{
+ struct charset *charset = CHARSET_FROM_ID (charset_primary);
+ unsigned c1 = ENCODE_CHAR (charset, c);
+
+ return ((c1 != CHARSET_INVALID_CODE (charset)) ? c1 : c & 0xFF);
+}
+
+
+DEFUN ("characterp", Fcharacterp, Scharacterp, 1, 2, 0,
+ doc: /* Return non-nil if OBJECT is a character. */)
+ (object, ignore)
+ Lisp_Object object, ignore;
+{
+ return (CHARACTERP (object) ? Qt : Qnil);
+}
+
+DEFUN ("max-char", Fmax_char, Smax_char, 0, 0, 0,
+ doc: /* Return the character of the maximum code. */)
+ ()
+{
+ return make_number (MAX_CHAR);
+}
+
+DEFUN ("unibyte-char-to-multibyte", Funibyte_char_to_multibyte,
+ Sunibyte_char_to_multibyte, 1, 1, 0,
+ doc: /* Convert the unibyte character CH to multibyte character.
+The multibyte character is a result of decoding CH by
+the current primary charset (value of `charset-primary'). */)
+ (ch)
+ Lisp_Object ch;
+{
+ int c;
+ struct charset *charset;
+
+ CHECK_CHARACTER (ch);
+ c = XFASTINT (ch);
+ if (c >= 0400)
+ error ("Invalid unibyte character: %d", c);
+ charset = CHARSET_FROM_ID (charset_primary);
+ c = DECODE_CHAR (charset, c);
+ if (c < 0)
+ error ("Can't convert to multibyte character: %d", XINT (ch));
+ return make_number (c);
+}
+
+DEFUN ("multibyte-char-to-unibyte", Fmultibyte_char_to_unibyte,
+ Smultibyte_char_to_unibyte, 1, 1, 0,
+ doc: /* Convert the multibyte character CH to unibyte character.\n\
+The unibyte character is a result of encoding CH by
+the current primary charset (value of `charset-primary'). */)
+ (ch)
+ Lisp_Object ch;
+{
+ int c;
+ unsigned code;
+ struct charset *charset;
+
+ CHECK_CHARACTER (ch);
+ c = XFASTINT (ch);
+ charset = CHARSET_FROM_ID (charset_primary);
+ code = ENCODE_CHAR (charset, c);
+ if (code < CHARSET_MIN_CODE (charset)
+ || code > CHARSET_MAX_CODE (charset))
+ error ("Can't convert to unibyte character: %d", XINT (ch));
+ return make_number (code);
+}
+
+DEFUN ("char-bytes", Fchar_bytes, Schar_bytes, 1, 1, 0,
+ doc: /* Return 1 regardless of the argument CHAR.
+This is now an obsolete function. We keep it just for backward compatibility. */)
+ (ch)
+ Lisp_Object ch;
+{
+ CHECK_CHARACTER (ch);
+ return make_number (1);
+}
+
+DEFUN ("char-width", Fchar_width, Schar_width, 1, 1, 0,
+ doc: /* Return width of CHAR when displayed in the current buffer.
+The width is measured by how many columns it occupies on the screen.
+Tab is taken to occupy `tab-width' columns. */)
+ (ch)
+ Lisp_Object ch;
+{
+ Lisp_Object disp;
+ int c, width;
+ struct Lisp_Char_Table *dp = buffer_display_table ();
+
+ CHECK_CHARACTER (ch);
+ c = XINT (ch);
+
+ /* Get the way the display table would display it. */
+ disp = dp ? DISP_CHAR_VECTOR (dp, c) : Qnil;
+
+ if (VECTORP (disp))
+ width = ASIZE (disp);
+ else
+ width = CHAR_WIDTH (c);
+
+ return make_number (width);
+}
+
+/* Return width of string STR of length LEN when displayed in the
+ current buffer. The width is measured by how many columns it
+ occupies on the screen. */
+
+int
+strwidth (str, len)
+ unsigned char *str;
+ int len;
+{
+ return c_string_width (str, len, -1, NULL, NULL);
+}
+
+/* Return width of string STR of length LEN when displayed in the
+ current buffer. The width is measured by how many columns it
+ occupies on the screen. If PRECISION > 0, return the width of
+ longest substring that doesn't exceed PRECISION, and set number of
+ characters and bytes of the substring in *NCHARS and *NBYTES
+ respectively. */
+
+c_string_width (str, len, precision, nchars, nbytes)
+ unsigned char *str;
+ int precision, *nchars, *nbytes;
+{
+ int i = 0, i_byte = 0;
+ int width = 0;
+ struct Lisp_Char_Table *dp = buffer_display_table ();
+
+ while (i_byte < len)
+ {
+ int bytes, thiswidth;
+ Lisp_Object val;
+ int c = STRING_CHAR_AND_LENGTH (str + i_byte, len - i_byte, bytes);
+
+ if (dp)
+ {
+ val = DISP_CHAR_VECTOR (dp, c);
+ if (VECTORP (val))
+ thiswidth = XVECTOR (val)->size;
+ else
+ thiswidth = CHAR_WIDTH (c);
+ }
+ else
+ {
+ thiswidth = CHAR_WIDTH (c);
+ }
+
+ if (precision > 0
+ && (width + thiswidth > precision))
+ {
+ *nchars = i;
+ *nbytes = i_byte;
+ return width;
+ }
+ i++;
+ i_byte += bytes;
+ width += thiswidth;
+ }
+
+ if (precision > 0)
+ {
+ *nchars = i;
+ *nbytes = i_byte;
+ }
+
+ return width;
+}
+
+/* Return width of Lisp string STRING when displayed in the current
+ buffer. The width is measured by how many columns it occupies on
+ the screen while paying attention to compositions. If PRECISION >
+ 0, return the width of longest substring that doesn't exceed
+ PRECISION, and set number of characters and bytes of the substring
+ in *NCHARS and *NBYTES respectively. */
+
+int
+lisp_string_width (string, precision, nchars, nbytes)
+ Lisp_Object string;
+ int precision, *nchars, *nbytes;
+{
+ int len = XSTRING (string)->size;
+ int len_byte = STRING_BYTES (XSTRING (string));
+ unsigned char *str = XSTRING (string)->data;
+ int i = 0, i_byte = 0;
+ int width = 0;
+ struct Lisp_Char_Table *dp = buffer_display_table ();
+
+ while (i < len)
+ {
+ int chars, bytes, thiswidth;
+ Lisp_Object val;
+ int cmp_id;
+ int ignore, end;
+
+ if (find_composition (i, -1, &ignore, &end, &val, string)
+ && ((cmp_id = get_composition_id (i, i_byte, end - i, val, string))
+ >= 0))
+ {
+ thiswidth = composition_table[cmp_id]->width;
+ chars = end - i;
+ bytes = string_char_to_byte (string, end) - i_byte;
+ }
+ else if (dp)
+ {
+ int c = STRING_CHAR_AND_LENGTH (str + i_byte, len - i_byte, bytes);
+
+ chars = 1;
+ val = DISP_CHAR_VECTOR (dp, c);
+ if (VECTORP (val))
+ thiswidth = XVECTOR (val)->size;
+ else
+ thiswidth = CHAR_WIDTH (c);
+ }
+ else
+ {
+ int c = STRING_CHAR_AND_LENGTH (str + i_byte, len - i_byte, bytes);
+
+ chars = 1;
+ thiswidth = CHAR_WIDTH (c);
+ }
+
+ if (precision > 0
+ && (width + thiswidth > precision))
+ {
+ *nchars = i;
+ *nbytes = i_byte;
+ return width;
+ }
+ i += chars;
+ i_byte += bytes;
+ width += thiswidth;
+ }
+
+ if (precision > 0)
+ {
+ *nchars = i;
+ *nbytes = i_byte;
+ }
+
+ return width;
+}
+
+DEFUN ("string-width", Fstring_width, Sstring_width, 1, 1, 0,
+ doc: /* Return width of STRING when displayed in the current buffer.
+Width is measured by how many columns it occupies on the screen.
+When calculating width of a multibyte character in STRING,
+only the base leading-code is considered; the validity of
+the following bytes is not checked. Tabs in STRING are always
+taken to occupy `tab-width' columns. */)
+ (str)
+ Lisp_Object str;
+{
+ Lisp_Object val;
+
+ CHECK_STRING (str);
+ XSETFASTINT (val, lisp_string_width (str, -1, NULL, NULL));
+ return val;
+}
+
+DEFUN ("char-direction", Fchar_direction, Schar_direction, 1, 1, 0,
+ doc: /* Return the direction of CHAR.
+The returned value is 0 for left-to-right and 1 for right-to-left. */)
+ (ch)
+ Lisp_Object ch;
+{
+ int c;
+
+ CHECK_CHARACTER (ch);
+ c = XINT (ch);
+ return CHAR_TABLE_REF (Vchar_direction_table, c);
+}
+
+DEFUN ("chars-in-region", Fchars_in_region, Schars_in_region, 2, 2, 0,
+ doc: /* Return number of characters between BEG and END.
+This is now an obsolete function. We keep it just for backward compatibility. */)
+ (beg, end)
+ Lisp_Object beg, end;
+{
+ int from, to;
+
+ CHECK_NUMBER_COERCE_MARKER (beg);
+ CHECK_NUMBER_COERCE_MARKER (end);
+
+ from = min (XFASTINT (beg), XFASTINT (end));
+ to = max (XFASTINT (beg), XFASTINT (end));
+
+ return make_number (to - from);
+}
+
+/* Return the number of characters in the NBYTES bytes at PTR.
+ This works by looking at the contents and checking for multibyte
+ sequences while assuming that there's no invalid sequence.
+ However, if the current buffer has enable-multibyte-characters =
+ nil, we treat each byte as a character. */
+
+int
+chars_in_text (ptr, nbytes)
+ unsigned char *ptr;
+ int nbytes;
+{
+ /* current_buffer is null at early stages of Emacs initialization. */
+ if (current_buffer == 0
+ || NILP (current_buffer->enable_multibyte_characters))
+ return nbytes;
+
+ return multibyte_chars_in_text (ptr, nbytes);
+}
+
+/* Return the number of characters in the NBYTES bytes at PTR.
+ This works by looking at the contents and checking for multibyte
+ sequences while assuming that there's no invalid sequence. It
+ ignores enable-multibyte-characters. */
+
+int
+multibyte_chars_in_text (ptr, nbytes)
+ unsigned char *ptr;
+ int nbytes;
+{
+ unsigned char *endp = ptr + nbytes;
+ int chars = 0;
+
+ while (ptr < endp)
+ {
+ int len = MULTIBYTE_LENGTH (ptr, endp);
+
+ if (len == 0)
+ abort ();
+ ptr += len;
+ chars++;
+ }
+
+ return chars;
+}
+
+/* Parse unibyte text at STR of LEN bytes as a multibyte text, count
+ characters and bytes in it, and store them in *NCHARS and *NBYTES
+ respectively. On counting bytes, pay attention to that 8-bit
+ characters not constructing a valid multibyte sequence are
+ represented by 2-byte in a multibyte text. */
+
+void
+parse_str_as_multibyte (str, len, nchars, nbytes)
+ unsigned char *str;
+ int len, *nchars, *nbytes;
+{
+ unsigned char *endp = str + len;
+ int n, chars = 0, bytes = 0;
+
+ if (len >= MAX_MULTIBYTE_LENGTH)
+ {
+ unsigned char *adjusted_endp = endp - MAX_MULTIBYTE_LENGTH;
+ while (str < adjusted_endp)
+ {
+ if ((n = MULTIBYTE_LENGTH_NO_CHECK (str)) > 0)
+ str += n, bytes += n;
+ else
+ str++, bytes += 2;
+ chars++;
+ }
+ }
+ while (str < endp)
+ {
+ if ((n = MULTIBYTE_LENGTH (str, endp)) > 0)
+ str += n, bytes += n;
+ else
+ str++, bytes += 2;
+ chars++;
+ }
+
+ *nchars = chars;
+ *nbytes = bytes;
+ return;
+}
+
+/* Arrange unibyte text at STR of NBYTES bytes as a multibyte text.
+ It actually converts only such 8-bit characters that don't contruct
+ a multibyte sequence to multibyte forms of Latin-1 characters. If
+ NCHARS is nonzero, set *NCHARS to the number of characters in the
+ text. It is assured that we can use LEN bytes at STR as a work
+ area and that is enough. Return the number of bytes of the
+ resulting text. */
+
+int
+str_as_multibyte (str, len, nbytes, nchars)
+ unsigned char *str;
+ int len, nbytes, *nchars;
+{
+ unsigned char *p = str, *endp = str + nbytes;
+ unsigned char *to;
+ int chars = 0;
+ int n;
+
+ if (nbytes >= MAX_MULTIBYTE_LENGTH)
+ {
+ unsigned char *adjusted_endp = endp - MAX_MULTIBYTE_LENGTH;
+ while (p < adjusted_endp
+ && (n = MULTIBYTE_LENGTH_NO_CHECK (p)) > 0)
+ p += n, chars++;
+ }
+ while ((n = MULTIBYTE_LENGTH (p, endp)) > 0)
+ p += n, chars++;
+ if (nchars)
+ *nchars = chars;
+ if (p == endp)
+ return nbytes;
+
+ to = p;
+ nbytes = endp - p;
+ endp = str + len;
+ safe_bcopy ((char *) p, (char *) (endp - nbytes), nbytes);
+ p = endp - nbytes;
+
+ if (nbytes >= MAX_MULTIBYTE_LENGTH)
+ {
+ unsigned char *adjusted_endp = endp - MAX_MULTIBYTE_LENGTH;
+ while (p < adjusted_endp)
+ {
+ if ((n = MULTIBYTE_LENGTH_NO_CHECK (p)) > 0)
+ {
+ while (n--)
+ *to++ = *p++;
+ }
+ else
+ {
+ int c = *p++;
+ c = BYTE8_TO_CHAR (c);
+ to += CHAR_STRING (c, to);
+ }
+ }
+ chars++;
+ }
+ while (p < endp)
+ {
+ if ((n = MULTIBYTE_LENGTH (p, endp)) > 0)
+ {
+ while (n--)
+ *to++ = *p++;
+ }
+ else
+ {
+ int c = *p++;
+ c = BYTE8_TO_CHAR (c);
+ to += CHAR_STRING (c, to);
+ }
+ chars++;
+ }
+ if (nchars)
+ *nchars = chars;
+ return (to - str);
+}
+
+/* Parse unibyte string at STR of LEN bytes, and return the number of
+ bytes it may ocupy when converted to multibyte string by
+ `str_to_multibyte'. */
+
+int
+parse_str_to_multibyte (str, len)
+ unsigned char *str;
+ int len;
+{
+ unsigned char *endp = str + len;
+ int bytes;
+
+ for (bytes = 0; str < endp; str++)
+ bytes += (*str < 0x80) ? 1 : 2;
+ return bytes;
+}
+
+
+/* Convert unibyte text at STR of NBYTES bytes to a multibyte text
+ that contains the same single-byte characters. It actually
+ converts all 8-bit characters to multibyte forms. It is assured
+ that we can use LEN bytes at STR as a work area and that is
+ enough. */
+
+int
+str_to_multibyte (str, len, bytes)
+ unsigned char *str;
+ int len, bytes;
+{
+ unsigned char *p = str, *endp = str + bytes;
+ unsigned char *to;
+
+ while (p < endp && *p < 0x80) p++;
+ if (p == endp)
+ return bytes;
+ to = p;
+ bytes = endp - p;
+ endp = str + len;
+ safe_bcopy ((char *) p, (char *) (endp - bytes), bytes);
+ p = endp - bytes;
+ while (p < endp)
+ {
+ int c = *p++;
+
+ if (c >= 0x80)
+ c = BYTE8_TO_CHAR (c);
+ to += CHAR_STRING (c, to);
+ }
+ return (to - str);
+}
+
+/* Arrange multibyte text at STR of LEN bytes as a unibyte text. It
+ actually converts characters in the range 0x80..0xFF to
+ unibyte. */
+
+int
+str_as_unibyte (str, bytes)
+ unsigned char *str;
+ int bytes;
+{
+ unsigned char *p = str, *endp = str + bytes;
+ unsigned char *to = str;
+ int c, len;
+
+ while (p < endp)
+ {
+ c = *p;
+ len = BYTES_BY_CHAR_HEAD (c);
+ if (CHAR_BYTE8_HEAD_P (c))
+ break;
+ p += len;
+ }
+ to = p;
+ while (p < endp)
+ {
+ c = *p;
+ len = BYTES_BY_CHAR_HEAD (c);
+ if (CHAR_BYTE8_HEAD_P (c))
+ {
+ c = STRING_CHAR_ADVANCE (p);
+ *to++ = CHAR_TO_BYTE8 (c);
+ }
+ else
+ {
+ while (len--) *to++ = *p++;
+ }
+ }
+ return (to - str);
+}
+
+int
+string_count_byte8 (string)
+ Lisp_Object string;
+{
+ int multibyte = STRING_MULTIBYTE (string);
+ int nchars = XSTRING (string)->size;
+ int nbytes = STRING_BYTES (XSTRING (string));
+ unsigned char *p = XSTRING (string)->data;
+ unsigned char *pend = p + nbytes;
+ int count = 0;
+ int c, len;
+
+ if (multibyte)
+ while (p < pend)
+ {
+ c = *p;
+ len = BYTES_BY_CHAR_HEAD (c);
+
+ if (CHAR_BYTE8_HEAD_P (c))
+ count++;
+ p += len;
+ }
+ else
+ while (p < pend)
+ {
+ if (*p++ >= 0x80)
+ count++;
+ }
+ return count;
+}
+
+
+Lisp_Object
+string_escape_byte8 (string)
+ Lisp_Object string;
+{
+ int nchars = XSTRING (string)->size;
+ int nbytes = STRING_BYTES (XSTRING (string));
+ int multibyte = STRING_MULTIBYTE (string);
+ int byte8_count;
+ unsigned char *src, *src_end, *dst;
+ Lisp_Object val;
+ int c, len;
+
+ if (multibyte && nchars == nbytes)
+ return string;
+
+ byte8_count = string_count_byte8 (string);
+
+ if (byte8_count == 0)
+ return string;
+
+ if (multibyte)
+ /* Convert 2-byte sequence of byte8 chars to 4-byte octal. */
+ val = make_uninit_multibyte_string (nchars + byte8_count * 2,
+ nbytes + byte8_count * 2);
+ else
+ /* Convert 1-byte sequence of byte8 chars to 4-byte octal. */
+ val = make_uninit_string (nbytes + byte8_count * 3);
+
+ src = XSTRING (string)->data;
+ src_end = src + nbytes;
+ dst = XSTRING (val)->data;
+ if (multibyte)
+ while (src < src_end)
+ {
+ c = *src;
+ len = BYTES_BY_CHAR_HEAD (c);
+
+ if (CHAR_BYTE8_HEAD_P (c))
+ {
+ c = STRING_CHAR_ADVANCE (src);
+ c = CHAR_TO_BYTE8 (c);
+ sprintf (dst, "\\%03o", c);
+ dst += 4;
+ }
+ else
+ while (len--) *dst++ = *src++;
+ }
+ else
+ while (src < src_end)
+ {
+ c = *src++;
+ if (c >= 0x80)
+ {
+ sprintf (dst, "\\%03o", c);
+ dst += 4;
+ }
+ else
+ *dst++ = c;
+ }
+ return val;
+}
+
+\f
+DEFUN ("string", Fstring, Sstring, 1, MANY, 0,
+ doc: /*
+Concatenate all the argument characters and make the result a string. */)
+ (n, args)
+ int n;
+ Lisp_Object *args;
+{
+ int i;
+ unsigned char *buf = (unsigned char *) alloca (MAX_MULTIBYTE_LENGTH * n);
+ unsigned char *p = buf;
+ int c;
+
+ for (i = 0; i < n; i++)
+ {
+ CHECK_CHARACTER (args[i]);
+ c = XINT (args[i]);
+ p += CHAR_STRING (c, p);
+ }
+
+ return make_string_from_bytes ((char *) buf, n, p - buf);
+}
+
+void
+init_character_once ()
+{
+}
+
+#ifdef emacs
+
+void
+syms_of_character ()
+{
+ DEFSYM (Qcharacterp, "characterp");
+ DEFSYM (Qauto_fill_chars, "auto-fill-chars");
+
+ staticpro (&Vchar_unify_table);
+ Vchar_unify_table = Qnil;
+
+ defsubr (&Smax_char);
+ defsubr (&Scharacterp);
+ defsubr (&Sunibyte_char_to_multibyte);
+ defsubr (&Smultibyte_char_to_unibyte);
+ defsubr (&Schar_bytes);
+ defsubr (&Schar_width);
+ defsubr (&Sstring_width);
+ defsubr (&Schar_direction);
+ defsubr (&Schars_in_region);
+ defsubr (&Sstring);
+
+ DEFVAR_LISP ("translation-table-vector", &Vtranslation_table_vector,
+ doc: /*
+Vector of cons cell of a symbol and translation table ever defined.
+An ID of a translation table is an index of this vector. */);
+ Vtranslation_table_vector = Fmake_vector (make_number (16), Qnil);
+
+ DEFVAR_LISP ("auto-fill-chars", &Vauto_fill_chars,
+ doc: /*
+A char-table for characters which invoke auto-filling.
+Such characters have value t in this table. */);
+ Vauto_fill_chars = Fmake_char_table (Qauto_fill_chars, Qnil);
+ CHAR_TABLE_SET (Vauto_fill_chars, make_number (' '), Qt);
+ CHAR_TABLE_SET (Vauto_fill_chars, make_number ('\n'), Qt);
+
+ DEFVAR_LISP ("char-width-table", &Vchar_width_table,
+ doc: /*
+A char-table for width (columns) of each character. */);
+ Vchar_width_table = Fmake_char_table (Qnil, make_number (1));
+
+ DEFVAR_LISP ("char-direction-table", &Vchar_direction_table,
+ doc: /* A char-table for direction of each character. */);
+ Vchar_direction_table = Fmake_char_table (Qnil, make_number (1));
+
+ DEFVAR_LISP ("printable-chars", &Vprintable_chars,
+ doc: /* A char-table for each printable character. */);
+ Vprintable_chars = Fmake_char_table (Qnil, Qt);
+}
+
+#endif /* emacs */
--- /dev/null
+/* Header for multibyte character handler.
+ Copyright (C) 1995, 1997, 1998 Electrotechnical Laboratory, JAPAN.
+ Licensed to the Free Software Foundation.
+ Copyright (C) 2001, 2002
+ National Institute of Advanced Industrial Science and Technology (AIST)
+ Registration Number H13PRO009
+
+This file is part of GNU Emacs.
+
+GNU Emacs 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.
+
+GNU Emacs 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 GNU Emacs; see the file COPYING. If not, write to
+the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
+
+#ifndef EMACS_CHARACTER_H
+#define EMACS_CHARACTER_H
+
+/* 0-7F 0xxxxxxx
+ 00..7F
+ 80-7FF 110xxxxx 10xxxxxx
+ C2..DF 80..BF
+ 800-FFFF 1110xxxx 10xxxxxx 10xxxxxx
+ E0..EF 80..BF 80..BF
+ 10000-1FFFFF 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
+ F0..F7 80..BF 80..BF 80..BF
+ 200000-3FFF7F 11111000 1000xxxx 10xxxxxx 10xxxxxx 10xxxxxx
+ F8 80..8F 80..BF 80..BF 80..BF
+ invalid 11111001
+ F9
+ invalid 1111101x
+ FA..FB
+ invalid 111111xx
+ FC..FE
+
+ raw-8-bit
+ 3FFF80-3FFFFF 1100000x 10xxxxxx
+ C0..C1 80..BF
+
+*/
+
+/* This is the maximum character code ((1 << CHARACTERBITS) - 1). */
+#define MAX_CHAR 0x3FFFFF
+
+#define MAX_UNICODE_CHAR 0x10FFFF
+
+#define MAX_1_BYTE_CHAR 0x7F
+#define MAX_2_BYTE_CHAR 0x7FF
+#define MAX_3_BYTE_CHAR 0xFFFF
+#define MAX_4_BYTE_CHAR 0x1FFFFF
+#define MAX_5_BYTE_CHAR 0x3FFF7F
+
+#define BYTE8_TO_CHAR(byte) ((byte) + 0x3FFF00)
+#define CHAR_TO_BYTE8(c) ((c) - 0x3FFF00)
+#define CHAR_BYTE8_P(c) ((c) > MAX_5_BYTE_CHAR)
+#define CHAR_BYTE8_HEAD_P(byte) ((byte) == 0xC0 || (byte) == 0xC1)
+
+/* This is the maximum byte length of multi-byte sequence. */
+#define MAX_MULTIBYTE_LENGTH 5
+
+/* Return a Lisp character whose code is C. */
+#define make_char(c) make_number (c)
+
+/* Nonzero iff C is an ASCII byte. */
+#define ASCII_BYTE_P(c) ((unsigned) (c) < 0x80)
+
+/* Nonzero iff X is a character. */
+#define CHARACTERP(x) (NATNUMP (x) && XFASTINT (x) <= MAX_CHAR)
+
+/* Nozero iff C is valid as a charater code. GENERICP is not used
+ now. It will be removed in the future. */
+#define CHAR_VALID_P(c, genericp) CHARACTERP (c)
+
+/* Check if Lisp object X is a character or not. */
+#define CHECK_CHARACTER(x) \
+ do { \
+ if (! CHARACTERP(x)) x = wrong_type_argument (Qcharacterp, (x)); \
+ } while (0)
+
+/* Nonzero iff C is an ASCII character. */
+#define ASCII_CHAR_P(c) ((unsigned) (c) < 0x80)
+
+/* Nonzero iff C is a character of code less than 0x100. */
+#define SINGLE_BYTE_CHAR_P(c) ((unsigned) (c) < 0x100)
+
+/* Nonzero if character C has a printable glyph. */
+#define CHAR_PRINTABLE_P(c) \
+ (((c) >= 32 && ((c) < 127) \
+ || ! NILP (CHAR_TABLE_REF (Vprintable_chars, (c)))))
+
+/* How many bytes C occupies in a multibyte buffer. */
+#define CHAR_BYTES(c) \
+ ( (c) <= MAX_1_BYTE_CHAR ? 1 \
+ : (c) <= MAX_2_BYTE_CHAR ? 2 \
+ : (c) <= MAX_3_BYTE_CHAR ? 3 \
+ : (c) <= MAX_4_BYTE_CHAR ? 4 \
+ : (c) <= MAX_5_BYTE_CHAR ? 5 \
+ : 2)
+
+/* Store multibyte form of the character C in STR. The caller should
+ allocate at least MAX_MULTIBYTE_LENGTH bytes area at STR in
+ advance. Returns the length of the multibyte form. */
+
+#define CHAR_STRING(c, p) \
+ ((unsigned) (c) <= MAX_1_BYTE_CHAR \
+ ? ((p)[0] = (c), \
+ 1) \
+ : (unsigned) (c) <= MAX_2_BYTE_CHAR \
+ ? ((p)[0] = (0xC0 | ((c) >> 6)), \
+ (p)[1] = (0x80 | ((c) & 0x3F)), \
+ 2) \
+ : (unsigned) (c) <= MAX_3_BYTE_CHAR \
+ ? ((p)[0] = (0xE0 | ((c) >> 12)), \
+ (p)[1] = (0x80 | (((c) >> 6) & 0x3F)), \
+ (p)[2] = (0x80 | ((c) & 0x3F)), \
+ 3) \
+ : (unsigned) (c) <= MAX_5_BYTE_CHAR \
+ ? char_string_with_unification (c, p, NULL) \
+ : ((p)[0] = (0xC0 | (((c) >> 6) & 0x01)), \
+ (p)[1] = (0x80 | ((c) & 0x3F)), \
+ 2))
+
+
+/* Like CHAR_STRING, but advance P to the end of the multibyte
+ form. */
+
+#define CHAR_STRING_ADVANCE(c, p) \
+ ((unsigned) (c) <= MAX_1_BYTE_CHAR \
+ ? *(p)++ = (c) \
+ : (unsigned) (c) <= MAX_2_BYTE_CHAR \
+ ? (*(p)++ = (0xC0 | ((c) >> 6)), \
+ *(p)++ = (0x80 | ((c) & 0x3F))) \
+ : (unsigned) (c) <= MAX_3_BYTE_CHAR \
+ ? (*(p)++ = (0xE0 | ((c) >> 12)), \
+ *(p)++ = (0x80 | (((c) >> 6) & 0x3F)), \
+ *(p)++ = (0x80 | ((c) & 0x3F))) \
+ : (unsigned) (c) <= MAX_5_BYTE_CHAR \
+ ? char_string_with_unification (c, p, &p) \
+ : (*(p)++ = (0xC0 | (((c) >> 6) & 0x01)), \
+ *(p)++ = (0x80 | ((c) & 0x3F))))
+
+
+/* Nonzero iff BYTE starts a character in a multibyte form. */
+#define CHAR_HEAD_P(byte) (((byte) & 0xC0) != 0x80)
+
+/* Nonzero iff BYTE starts a non-ASCII character in a multibyte
+ form. */
+#define LEADING_CODE_P(byte) (((byte) & 0xC0) == 0xC0)
+
+/* Just kept for backward compatibility. This macro will be removed
+ in the future. */
+#define BASE_LEADING_CODE_P LEADING_CODE_P
+
+/* How many bytes a character that starts with BYTE occupies in a
+ multibyte form. */
+#define BYTES_BY_CHAR_HEAD(byte) \
+ (!((byte) & 0x80) ? 1 \
+ : !((byte) & 0x20) ? 2 \
+ : !((byte) & 0x10) ? 3 \
+ : !((byte) & 0x08) ? 4 \
+ : 5)
+
+
+/* Return the length of the multi-byte form at string STR of length
+ LEN while assuming that STR points a valid multi-byte form. As
+ this macro isn't necessary anymore, all callers will be changed to
+ use BYTES_BY_CHAR_HEAD directly in the future. */
+
+#define MULTIBYTE_FORM_LENGTH(str, len) \
+ BYTES_BY_CHAR_HEAD (*(str))
+
+/* Parse multibyte string STR of length LENGTH and set BYTES to the
+ byte length of a character at STR while assuming that STR points a
+ valid multibyte form. As this macro isn't necessary anymore, all
+ callers will be changed to use BYTES_BY_CHAR_HEAD directly in the
+ future. */
+
+#define PARSE_MULTIBYTE_SEQ(str, length, bytes) \
+ (bytes) = BYTES_BY_CHAR_HEAD (*(str))
+
+/* The byte length of multibyte form at unibyte string P ending at
+ PEND. If STR doesn't point a valid multibyte form, return 0. */
+
+#define MULTIBYTE_LENGTH(p, pend) \
+ (p >= pend ? 0 \
+ : !((p)[0] & 0x80) ? 1 \
+ : ((p + 1 >= pend) || (((p)[1] & 0xC0) != 0x80)) ? 0 \
+ : ((p)[0] & 0xE0) == 0xC0 ? 2 \
+ : ((p + 2 >= pend) || (((p)[2] & 0xC0) != 0x80)) ? 0 \
+ : ((p)[0] & 0xF0) == 0xE0 ? 3 \
+ : ((p + 3 >= pend) || (((p)[3] & 0xC0) != 0x80)) ? 0 \
+ : ((p)[0] & 0xF8) == 0xF0 ? 4 \
+ : ((p + 4 >= pend) || (((p)[4] & 0xC0) != 0x80)) ? 0 \
+ : (p)[0] == 0xF8 && ((p)[1] & 0xF0) == 0x80 ? 5 \
+ : 0)
+
+
+/* Like MULTIBYTE_LENGTH but don't check the ending address. */
+
+#define MULTIBYTE_LENGTH_NO_CHECK(p) \
+ (!((p)[0] & 0x80) ? 1 \
+ : ((p)[1] & 0xC0) != 0x80 ? 0 \
+ : ((p)[0] & 0xE0) == 0xC0 ? 2 \
+ : ((p)[2] & 0xC0) != 0x80 ? 0 \
+ : ((p)[0] & 0xF0) == 0xE0 ? 3 \
+ : ((p)[3] & 0xC0) != 0x80 ? 0 \
+ : ((p)[0] & 0xF8) == 0xF0 ? 4 \
+ : ((p)[4] & 0xC0) != 0x80 ? 0 \
+ : (p)[0] == 0xF8 && ((p)[1] & 0xF0) == 0x80 ? 5 \
+ : 0)
+
+
+/* Return the character code of character whose multibyte form is at
+ P. The argument LEN is ignored. It will be removed in the
+ future. */
+
+#define STRING_CHAR(p, len) \
+ (!((p)[0] & 0x80) \
+ ? (p)[0] \
+ : ! ((p)[0] & 0x20) \
+ ? (((((p)[0] & 0x1F) << 6) \
+ | ((p)[1] & 0x3F)) \
+ + (((unsigned char) (p)[0]) < 0xC2 ? 0x3FFF80 : 0)) \
+ : ! ((p)[0] & 0x10) \
+ ? ((((p)[0] & 0x0F) << 12) \
+ | (((p)[1] & 0x3F) << 6) \
+ | ((p)[2] & 0x3F)) \
+ : string_char_with_unification (p, NULL, NULL))
+
+
+/* Like STRING_CHAR but set ACTUAL_LEN to the length of multibyte
+ form. The argument LEN is ignored. It will be removed in the
+ future. */
+
+#define STRING_CHAR_AND_LENGTH(p, len, actual_len) \
+ (!((p)[0] & 0x80) \
+ ? ((actual_len) = 1, (p)[0]) \
+ : ! ((p)[0] & 0x20) \
+ ? ((actual_len) = 2, \
+ (((((p)[0] & 0x1F) << 6) \
+ | ((p)[1] & 0x3F)) \
+ + (((unsigned char) (p)[0]) < 0xC2 ? 0x3FFF80 : 0))) \
+ : ! ((p)[0] & 0x10) \
+ ? ((actual_len) = 3, \
+ ((((p)[0] & 0x0F) << 12) \
+ | (((p)[1] & 0x3F) << 6) \
+ | ((p)[2] & 0x3F))) \
+ : string_char_with_unification (p, NULL, &actual_len))
+
+
+/* Like STRING_CHAR but advacen P to the end of multibyte form. */
+
+#define STRING_CHAR_ADVANCE(p) \
+ (!((p)[0] & 0x80) \
+ ? *(p)++ \
+ : ! ((p)[0] & 0x20) \
+ ? ((p) += 2, \
+ ((((p)[-2] & 0x1F) << 6) \
+ | ((p)[-1] & 0x3F) \
+ | (((unsigned char) (p)[-2]) < 0xC2 ? 0x3FFF80 : 0))) \
+ : ! ((p)[0] & 0x10) \
+ ? ((p) += 3, \
+ ((((p)[-3] & 0x0F) << 12) \
+ | (((p)[-2] & 0x3F) << 6) \
+ | ((p)[-1] & 0x3F))) \
+ : string_char_with_unification (p, &p, NULL))
+
+
+/* Fetch the "next" character from Lisp string STRING at byte position
+ BYTEIDX, character position CHARIDX. Store it into OUTPUT.
+
+ All the args must be side-effect-free.
+ BYTEIDX and CHARIDX must be lvalues;
+ we increment them past the character fetched. */
+
+#define FETCH_STRING_CHAR_ADVANCE(OUTPUT, STRING, CHARIDX, BYTEIDX) \
+ if (1) \
+ { \
+ CHARIDX++; \
+ if (STRING_MULTIBYTE (STRING)) \
+ { \
+ unsigned char *ptr = &XSTRING (STRING)->data[BYTEIDX]; \
+ int len; \
+ \
+ OUTPUT = STRING_CHAR_AND_LENGTH (ptr, 0, len); \
+ BYTEIDX += len; \
+ } \
+ else \
+ OUTPUT = XSTRING (STRING)->data[BYTEIDX++]; \
+ } \
+ else
+
+
+/* Like FETCH_STRING_CHAR_ADVANCE but assumes STRING is multibyte. */
+
+#define FETCH_STRING_CHAR_ADVANCE_NO_CHECK(OUTPUT, STRING, CHARIDX, BYTEIDX) \
+ if (1) \
+ { \
+ unsigned char *ptr = &XSTRING (STRING)->data[BYTEIDX]; \
+ int len; \
+ \
+ OUTPUT = STRING_CHAR_AND_LENGTH (ptr, 0, len); \
+ BYTEIDX += len; \
+ CHARIDX++; \
+ } \
+ else
+
+
+/* Like FETCH_STRING_CHAR_ADVANCE but fetch character from the current
+ buffer. */
+
+#define FETCH_CHAR_ADVANCE(OUTPUT, CHARIDX, BYTEIDX) \
+ if (1) \
+ { \
+ CHARIDX++; \
+ if (!NILP (current_buffer->enable_multibyte_characters)) \
+ { \
+ unsigned char *ptr = BYTE_POS_ADDR (BYTEIDX); \
+ int len; \
+ \
+ OUTPUT= STRING_CHAR_AND_LENGTH (ptr, 0, len); \
+ BYTEIDX += len; \
+ } \
+ else \
+ { \
+ OUTPUT = *(BYTE_POS_ADDR (BYTEIDX)); \
+ BYTEIDX++; \
+ } \
+ } \
+ else
+
+
+/* Like FETCH_CHAR_ADVANCE but assumes STRING is multibyte. */
+
+#define FETCH_CHAR_ADVANCE_NO_CHECK(OUTPUT, CHARIDX, BYTEIDX) \
+ if (1) \
+ { \
+ unsigned char *ptr = BYTE_POS_ADDR (BYTEIDX); \
+ int len; \
+ \
+ OUTPUT= STRING_CHAR_AND_LENGTH (ptr, 0, len); \
+ BYTEIDX += len; \
+ CHARIDX++; \
+ } \
+ else
+
+
+/* Increase the buffer byte position POS_BYTE of the current buffer to
+ the next character boundary. No range checking of POS. */
+
+#define INC_POS(pos_byte) \
+ do { \
+ unsigned char *p = BYTE_POS_ADDR (pos_byte); \
+ pos_byte += BYTES_BY_CHAR_HEAD (*p); \
+ } while (0)
+
+
+/* Decrease the buffer byte position POS_BYTE of the current buffer to
+ the previous character boundary. No range checking of POS. */
+
+#define DEC_POS(pos_byte) \
+ do { \
+ unsigned char *p; \
+ \
+ pos_byte--; \
+ if (pos_byte < GPT_BYTE) \
+ p = BEG_ADDR + pos_byte - 1; \
+ else \
+ p = BEG_ADDR + GAP_SIZE + pos_byte - 1; \
+ while (!CHAR_HEAD_P (*p)) \
+ { \
+ p--; \
+ pos_byte--; \
+ } \
+ } while (0)
+
+/* Increment both CHARPOS and BYTEPOS, each in the appropriate way. */
+
+#define INC_BOTH(charpos, bytepos) \
+ do \
+ { \
+ (charpos)++; \
+ if (NILP (current_buffer->enable_multibyte_characters)) \
+ (bytepos)++; \
+ else \
+ INC_POS ((bytepos)); \
+ } \
+ while (0)
+
+
+/* Decrement both CHARPOS and BYTEPOS, each in the appropriate way. */
+
+#define DEC_BOTH(charpos, bytepos) \
+ do \
+ { \
+ (charpos)--; \
+ if (NILP (current_buffer->enable_multibyte_characters)) \
+ (bytepos)--; \
+ else \
+ DEC_POS ((bytepos)); \
+ } \
+ while (0)
+
+
+/* Increase the buffer byte position POS_BYTE of the current buffer to
+ the next character boundary. This macro relies on the fact that
+ *GPT_ADDR and *Z_ADDR are always accessible and the values are
+ '\0'. No range checking of POS_BYTE. */
+
+#define BUF_INC_POS(buf, pos_byte) \
+ do { \
+ unsigned char *p = BUF_BYTE_ADDRESS (buf, pos_byte); \
+ pos_byte += BYTES_BY_CHAR_HEAD (*p); \
+ } while (0)
+
+
+/* Decrease the buffer byte position POS_BYTE of the current buffer to
+ the previous character boundary. No range checking of POS_BYTE. */
+
+#define BUF_DEC_POS(buf, pos_byte) \
+ do { \
+ unsigned char *p; \
+ pos_byte--; \
+ if (pos_byte < BUF_GPT_BYTE (buf)) \
+ p = BUF_BEG_ADDR (buf) + pos_byte - 1; \
+ else \
+ p = BUF_BEG_ADDR (buf) + BUF_GAP_SIZE (buf) + pos_byte - 1; \
+ while (!CHAR_HEAD_P (*p)) \
+ { \
+ p--; \
+ pos_byte--; \
+ } \
+ } while (0)
+
+
+#define MAYBE_UNIFY_CHAR(c) \
+ if (CHAR_TABLE_P (Vchar_unify_table)) \
+ { \
+ Lisp_Object val; \
+ int unified; \
+ \
+ val = CHAR_TABLE_REF (Vchar_unify_table, c); \
+ if (SYMBOLP (val)) \
+ { \
+ Funify_charset (val, Qnil); \
+ val = CHAR_TABLE_REF (Vchar_unify_table, c); \
+ } \
+ if ((unified = XINT (val)) >= 0) \
+ c = unified; \
+ } \
+ else
+
+/* Return the width of ASCII character C. The width is measured by
+ how many columns occupied on the screen when displayed in the
+ current buffer. */
+
+#define ASCII_CHAR_WIDTH(c) \
+ (c < 0x20 \
+ ? (c == '\t' \
+ ? XFASTINT (current_buffer->tab_width) \
+ : (c == '\n' ? 0 : (NILP (current_buffer->ctl_arrow) ? 4 : 2))) \
+ : (c < 0x7f \
+ ? 1 \
+ : ((NILP (current_buffer->ctl_arrow) ? 4 : 2))))
+
+/* Return the width of character C. The width is measured by how many
+ columns occupied on the screen when displayed in the current
+ buffer. */
+
+#define CHAR_WIDTH(c) \
+ (ASCII_CHAR_P (c) \
+ ? ASCII_CHAR_WIDTH (c) \
+ : XINT (CHAR_TABLE_REF (Vchar_width_table, c)))
+
+extern int char_string_with_unification P_ ((int, unsigned char *,
+ unsigned char **));
+extern int string_char_with_unification P_ ((unsigned char *,
+ unsigned char **, int *));
+
+extern int translate_char P_ ((Lisp_Object, int c));
+extern int char_printable_p P_ ((int c));
+extern void parse_str_as_multibyte P_ ((unsigned char *, int, int *, int *));
+extern int parse_str_to_multibyte P_ ((unsigned char *, int));
+extern int str_as_multibyte P_ ((unsigned char *, int, int, int *));
+extern int str_to_multibyte P_ ((unsigned char *, int, int));
+extern int str_as_unibyte P_ ((unsigned char *, int));
+extern int strwidth P_ ((unsigned char *, int));
+extern int c_string_width P_ ((unsigned char *, int, int, int *, int *));
+extern int lisp_string_width P_ ((Lisp_Object, int, int *, int *));
+
+extern Lisp_Object Vprintable_chars;
+
+extern Lisp_Object Qcharacterp, Qauto_fill_chars;
+extern Lisp_Object Vtranslation_table_vector;
+extern Lisp_Object Vchar_width_table;
+extern Lisp_Object Vchar_direction_table;
+extern Lisp_Object Vchar_unify_table;
+
+/* Return a translation table of id number ID. */
+#define GET_TRANSLATION_TABLE(id) \
+ (XCDR(XVECTOR(Vtranslation_table_vector)->contents[(id)]))
+
+/* A char-table for characters which may invoke auto-filling. */
+extern Lisp_Object Vauto_fill_chars;
+
+/* Copy LEN bytes from FROM to TO. This macro should be used only
+ when a caller knows that LEN is short and the obvious copy loop is
+ faster than calling bcopy which has some overhead. Copying a
+ multibyte sequence of a character is the typical case. */
+
+#define BCOPY_SHORT(from, to, len) \
+ do { \
+ int i = len; \
+ unsigned char *from_p = from, *to_p = to; \
+ while (i--) *to_p++ = *from_p++; \
+ } while (0)
+
+#define DEFSYM(sym, name) \
+ do { (sym) = intern ((name)); staticpro (&(sym)); } while (0)
+
+#endif /* EMACS_CHARACTER_H */
projects / emacs.git / commitdiff