/* Basic multilingual character support.
- Copyright (C) 1995, 1997, 1998 Electrotechnical Laboratory, JAPAN.
- Licensed to the Free Software Foundation.
+ Copyright (C) 2001, 2002, 2003, 2004, 2005,
+ 2006, 2007 Free Software Foundation, Inc.
+ Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
+ 2005, 2006, 2007
+ National Institute of Advanced Industrial Science and Technology (AIST)
+ Registration Number H14PRO021
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)
+the Free Software Foundation; either version 3, or (at your option)
any later version.
GNU Emacs is distributed in the hope that it will be useful,
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. */
+the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+Boston, MA 02110-1301, USA. */
/* At first, see the document in `charset.h' to understand the code in
this file. */
+#ifdef emacs
+#include <config.h>
+#endif
+
#include <stdio.h>
#ifdef emacs
#include <sys/types.h>
-#include <config.h>
#include "lisp.h"
#include "buffer.h"
#include "charset.h"
+#include "composite.h"
#include "coding.h"
#include "disptab.h"
#endif /* emacs */
-Lisp_Object Qcharset, Qascii, Qcomposition;
+Lisp_Object Qcharset, Qascii, Qeight_bit_control, Qeight_bit_graphic;
+Lisp_Object Qunknown;
/* Declaration of special leading-codes. */
-int leading_code_composition; /* for composite characters */
-int leading_code_private_11; /* for private DIMENSION1 of 1-column */
-int leading_code_private_12; /* for private DIMENSION1 of 2-column */
-int leading_code_private_21; /* for private DIMENSION2 of 1-column */
-int leading_code_private_22; /* for private DIMENSION2 of 2-column */
-
-/* Declaration of special charsets. */
-int charset_ascii; /* ASCII */
-int charset_composition; /* for a composite character */
+EMACS_INT leading_code_private_11; /* for private DIMENSION1 of 1-column */
+EMACS_INT leading_code_private_12; /* for private DIMENSION1 of 2-column */
+EMACS_INT leading_code_private_21; /* for private DIMENSION2 of 1-column */
+EMACS_INT leading_code_private_22; /* for private DIMENSION2 of 2-column */
+
+/* Declaration of special charsets. The values are set by
+ Fsetup_special_charsets. */
int charset_latin_iso8859_1; /* ISO8859-1 (Latin-1) */
int charset_jisx0208_1978; /* JISX0208.1978 (Japanese Kanji old set) */
int charset_jisx0208; /* JISX0208.1983 (Japanese Kanji) */
int charset_latin_jisx0201; /* JISX0201.Roman (Japanese Roman) */
int charset_big5_1; /* Big5 Level 1 (Chinese Traditional) */
int charset_big5_2; /* Big5 Level 2 (Chinese Traditional) */
-
-int min_composite_char;
+int charset_mule_unicode_0100_24ff;
+int charset_mule_unicode_2500_33ff;
+int charset_mule_unicode_e000_ffff;
Lisp_Object Qcharset_table;
CHARS, and FINAL-CHAR) to Emacs' charset. */
int iso_charset_table[2][2][128];
-/* Table of pointers to the structure `cmpchar_info' indexed by
- CMPCHAR-ID. */
-struct cmpchar_info **cmpchar_table;
-/* The current size of `cmpchar_table'. */
-static int cmpchar_table_size;
-/* Number of the current composite characters. */
-int n_cmpchars;
-
/* Variables used locally in the macro FETCH_MULTIBYTE_CHAR. */
unsigned char *_fetch_multibyte_char_p;
int _fetch_multibyte_char_len;
/* Offset to add to a non-ASCII value when inserting it. */
-int nonascii_insert_offset;
+EMACS_INT nonascii_insert_offset;
/* Translation table for converting non-ASCII unibyte characters
to multibyte codes, or nil. */
/* List of all possible generic characters. */
Lisp_Object Vgeneric_character_list;
-#define min(X, Y) ((X) < (Y) ? (X) : (Y))
-#define max(X, Y) ((X) > (Y) ? (X) : (Y))
\f
void
invalid_character (c)
int c;
{
- error ("Invalid character: 0%o, %d, 0x%x", c, c, c);
+ error ("Invalid character: %d, #o%o, #x%x", c, c, c);
}
-
-/* Set STR a pointer to the multi-byte form of the character C. If C
- is not a composite character, the multi-byte form is set in WORKBUF
- and STR points WORKBUF. The caller should allocate at least 4-byte
- area at WORKBUF in advance. Returns the length of the multi-byte
- form. If C is an invalid character to have a multi-byte form,
- signal an error.
-
- Use macro `CHAR_STRING (C, WORKBUF, STR)' instead of calling this
- function directly if C can be an ASCII character. */
+/* Parse string STR of length LENGTH and fetch information of a
+ character at STR. Set BYTES to the byte length the character
+ occupies, CHARSET, C1, C2 to proper values of the character. */
+
+#define SPLIT_MULTIBYTE_SEQ(str, length, bytes, charset, c1, c2) \
+ do { \
+ (c1) = *(str); \
+ (bytes) = BYTES_BY_CHAR_HEAD (c1); \
+ if ((bytes) == 1) \
+ (charset) = ASCII_BYTE_P (c1) ? CHARSET_ASCII : CHARSET_8_BIT_GRAPHIC; \
+ else if ((bytes) == 2) \
+ { \
+ if ((c1) == LEADING_CODE_8_BIT_CONTROL) \
+ (charset) = CHARSET_8_BIT_CONTROL, (c1) = (str)[1] - 0x20; \
+ else \
+ (charset) = (c1), (c1) = (str)[1] & 0x7F; \
+ } \
+ else if ((bytes) == 3) \
+ { \
+ if ((c1) < LEADING_CODE_PRIVATE_11) \
+ (charset) = (c1), (c1) = (str)[1] & 0x7F, (c2) = (str)[2] & 0x7F; \
+ else \
+ (charset) = (str)[1], (c1) = (str)[2] & 0x7F; \
+ } \
+ else \
+ (charset) = (str)[1], (c1) = (str)[2] & 0x7F, (c2) = (str)[3] & 0x7F; \
+ } while (0)
+
+/* 1 if CHARSET, C1, and C2 compose a valid character, else 0.
+ Note that this intentionally allows invalid components, such
+ as 0xA0 0xA0, because there exist many files that contain
+ such invalid byte sequences, especially in EUC-GB. */
+#define CHAR_COMPONENTS_VALID_P(charset, c1, c2) \
+ ((charset) == CHARSET_ASCII \
+ ? ((c1) >= 0 && (c1) <= 0x7F) \
+ : ((charset) == CHARSET_8_BIT_CONTROL \
+ ? ((c1) >= 0x80 && (c1) <= 0x9F) \
+ : ((charset) == CHARSET_8_BIT_GRAPHIC \
+ ? ((c1) >= 0x80 && (c1) <= 0xFF) \
+ : (CHARSET_DIMENSION (charset) == 1 \
+ ? ((c1) >= 0x20 && (c1) <= 0x7F) \
+ : ((c1) >= 0x20 && (c1) <= 0x7F \
+ && (c2) >= 0x20 && (c2) <= 0x7F)))))
+
+/* Store multi-byte form of the character C in STR. The caller should
+ allocate at least 4-byte area at STR in advance. Returns the
+ length of the multi-byte form. If C is an invalid character code,
+ return -1. */
int
-non_ascii_char_to_string (c, workbuf, str)
+char_to_string_1 (c, str)
int c;
- unsigned char *workbuf, **str;
+ unsigned char *str;
{
- int charset, c1, c2;
+ unsigned char *p = str;
- if (COMPOSITE_CHAR_P (c))
+ if (c & CHAR_MODIFIER_MASK) /* This includes the case C is negative. */
{
- int cmpchar_id = COMPOSITE_CHAR_ID (c);
+ /* Multibyte character can't have a modifier bit. */
+ if (! SINGLE_BYTE_CHAR_P ((c & ~CHAR_MODIFIER_MASK)))
+ return -1;
- if (cmpchar_id < n_cmpchars)
+ /* For Meta, Shift, and Control modifiers, we need special care. */
+ if (c & CHAR_META)
{
- *str = cmpchar_table[cmpchar_id]->data;
- return cmpchar_table[cmpchar_id]->len;
+ /* Move the meta bit to the right place for a string. */
+ c = (c & ~CHAR_META) | 0x80;
}
- else
+ if (c & CHAR_SHIFT)
{
- invalid_character (c);
+ /* Shift modifier is valid only with [A-Za-z]. */
+ if ((c & 0377) >= 'A' && (c & 0377) <= 'Z')
+ c &= ~CHAR_SHIFT;
+ else if ((c & 0377) >= 'a' && (c & 0377) <= 'z')
+ c = (c & ~CHAR_SHIFT) - ('a' - 'A');
+ }
+ if (c & CHAR_CTL)
+ {
+ /* Simulate the code in lread.c. */
+ /* Allow `\C- ' and `\C-?'. */
+ if (c == (CHAR_CTL | ' '))
+ c = 0;
+ else if (c == (CHAR_CTL | '?'))
+ c = 127;
+ /* ASCII control chars are made from letters (both cases),
+ as well as the non-letters within 0100...0137. */
+ else if ((c & 0137) >= 0101 && (c & 0137) <= 0132)
+ c &= (037 | (~0177 & ~CHAR_CTL));
+ else if ((c & 0177) >= 0100 && (c & 0177) <= 0137)
+ c &= (037 | (~0177 & ~CHAR_CTL));
}
- }
- SPLIT_NON_ASCII_CHAR (c, charset, c1, c2);
- if (!charset
- || ! CHARSET_DEFINED_P (charset)
- || c1 >= 0 && c1 < 32
- || c2 >= 0 && c2 < 32)
- invalid_character (c);
+ /* If C still has any modifier bits, just ignore it. */
+ c &= ~CHAR_MODIFIER_MASK;
+ }
- *str = workbuf;
- *workbuf++ = CHARSET_LEADING_CODE_BASE (charset);
- if (*workbuf = CHARSET_LEADING_CODE_EXT (charset))
- workbuf++;
- *workbuf++ = c1 | 0x80;
- if (c2 >= 0)
- *workbuf++ = c2 | 0x80;
+ if (SINGLE_BYTE_CHAR_P (c))
+ {
+ if (ASCII_BYTE_P (c) || c >= 0xA0)
+ *p++ = c;
+ else
+ {
+ *p++ = LEADING_CODE_8_BIT_CONTROL;
+ *p++ = c + 0x20;
+ }
+ }
+ else if (CHAR_VALID_P (c, 0))
+ {
+ int charset, c1, c2;
+
+ SPLIT_CHAR (c, charset, c1, c2);
+
+ if (charset >= LEADING_CODE_EXT_11)
+ *p++ = (charset < LEADING_CODE_EXT_12
+ ? LEADING_CODE_PRIVATE_11
+ : (charset < LEADING_CODE_EXT_21
+ ? LEADING_CODE_PRIVATE_12
+ : (charset < LEADING_CODE_EXT_22
+ ? LEADING_CODE_PRIVATE_21
+ : LEADING_CODE_PRIVATE_22)));
+ *p++ = charset;
+ if ((c1 > 0 && c1 < 32) || (c2 > 0 && c2 < 32))
+ return -1;
+ if (c1)
+ {
+ *p++ = c1 | 0x80;
+ if (c2 > 0)
+ *p++ = c2 | 0x80;
+ }
+ }
+ else
+ return -1;
- return (workbuf - *str);
+ return (p - str);
}
-/* Return a non-ASCII character of which multi-byte form is at STR of
- length LEN. If ACTUAL_LEN is not NULL, the actual length of the
- multibyte form is set to the address ACTUAL_LEN.
- If exclude_tail_garbage is nonzero, ACTUAL_LEN excludes gabage
- bytes following the non-ASCII character.
+/* Store multi-byte form of the character C in STR. The caller should
+ allocate at least 4-byte area at STR in advance. Returns the
+ length of the multi-byte form. If C is an invalid character code,
+ signal an error.
- Use macro `STRING_CHAR (STR, LEN)' instead of calling this function
- directly if STR can hold an ASCII character. */
+ Use macro `CHAR_STRING (C, STR)' instead of calling this function
+ directly if C can be an ASCII character. */
int
-string_to_non_ascii_char (str, len, actual_len, exclude_tail_garbage)
- const unsigned char *str;
- int len, *actual_len, exclude_tail_garbage;
+char_to_string (c, str)
+ int c;
+ unsigned char *str;
{
- int charset;
- unsigned char c1, c2;
- int c, bytes;
- const unsigned char *begp = str;
+ int len;
+ len = char_to_string_1 (c, str);
+ if (len == -1)
+ invalid_character (c);
+ return len;
+}
- c = *str++;
- bytes = 1;
- if (BASE_LEADING_CODE_P (c))
- do {
- while (bytes < len && ! CHAR_HEAD_P (begp[bytes])) bytes++;
+/* Return the non-ASCII character corresponding to multi-byte form at
+ STR of length LEN. If ACTUAL_LEN is not NULL, store the byte
+ length of the multibyte form in *ACTUAL_LEN.
- if (c == LEADING_CODE_COMPOSITION)
- {
- int cmpchar_id = str_cmpchar_id (begp, bytes);
+ Use macros STRING_CHAR or STRING_CHAR_AND_LENGTH instead of calling
+ this function directly if you want ot handle ASCII characters as
+ well. */
- if (cmpchar_id >= 0)
- {
- c = MAKE_COMPOSITE_CHAR (cmpchar_id);
- str += cmpchar_table[cmpchar_id]->len - 1;
- }
- else
- str += bytes - 1;
- }
- else
- {
- const unsigned char *endp = begp + bytes;
- int charset = c, c1, c2 = 0;
-
- if (str >= endp) break;
- if (c >= LEADING_CODE_PRIVATE_11 && c <= LEADING_CODE_PRIVATE_22)
- {
- charset = *str++;
- if (str < endp)
- c1 = *str++ & 0x7F;
- else
- c1 = charset, charset = c;
- }
- else
- c1 = *str++ & 0x7f;
- if (CHARSET_DEFINED_P (charset)
- && CHARSET_DIMENSION (charset) == 2
- && str < endp)
- c2 = *str++ & 0x7F;
- c = MAKE_NON_ASCII_CHAR (charset, c1, c2);
- }
- } while (0);
+int
+string_to_char (str, len, actual_len)
+ const unsigned char *str;
+ int len, *actual_len;
+{
+ int c, bytes, charset, c1, c2;
+ SPLIT_MULTIBYTE_SEQ (str, len, bytes, charset, c1, c2);
+ c = MAKE_CHAR (charset, c1, c2);
if (actual_len)
- *actual_len = exclude_tail_garbage ? str - begp : bytes;
+ *actual_len = bytes;
return c;
}
-/* Return the length of the multi-byte form at string STR of length LEN. */
+/* Return the length of the multi-byte form at string STR of length LEN.
+ Use the macro MULTIBYTE_FORM_LENGTH instead. */
int
multibyte_form_length (str, len)
const unsigned char *str;
int len;
{
- int bytes = 1;
-
- if (BASE_LEADING_CODE_P (*str))
- while (bytes < len && ! CHAR_HEAD_P (str[bytes])) bytes++;
+ int bytes;
+ PARSE_MULTIBYTE_SEQ (str, len, bytes);
return bytes;
}
-/* Check if string STR of length LEN contains valid multi-byte form of
- a character. If valid, charset and position codes of the character
- is set at *CHARSET, *C1, and *C2, and return 0. If not valid,
+/* Check multibyte form at string STR of length LEN and set variables
+ pointed by CHARSET, C1, and C2 to charset and position codes of the
+ character at STR, and return 0. If there's no multibyte character,
return -1. This should be used only in the macro SPLIT_STRING
which checks range of STR in advance. */
int
-split_non_ascii_string (str, len, charset, c1, c2)
- register const unsigned char *str;
- register unsigned char *c1, *c2;
- register int len, *charset;
+split_string (str, len, charset, c1, c2)
+ const unsigned char *str;
+ unsigned char *c1, *c2;
+ int len, *charset;
{
- register unsigned int cs = *str++;
-
- if (cs == LEADING_CODE_COMPOSITION)
- {
- int cmpchar_id = str_cmpchar_id (str - 1, len);
+ register int bytes, cs, code1, code2 = -1;
- if (cmpchar_id < 0)
- return -1;
- *charset = cs, *c1 = cmpchar_id >> 7, *c2 = cmpchar_id & 0x7F;
- }
- else if ((cs < LEADING_CODE_PRIVATE_11 || (cs = *str++) >= 0xA0)
- && CHARSET_DEFINED_P (cs))
- {
- *charset = cs;
- if (*str < 0xA0)
- return -1;
- *c1 = (*str++) & 0x7F;
- if (CHARSET_DIMENSION (cs) == 2)
- {
- if (*str < 0xA0)
- return -1;
- *c2 = (*str++) & 0x7F;
- }
- }
- else
+ SPLIT_MULTIBYTE_SEQ (str, len, bytes, cs, code1, code2);
+ if (cs == CHARSET_ASCII)
return -1;
+ *charset = cs;
+ *c1 = code1;
+ *c2 = code2;
return 0;
}
+/* Return 1 if character C has valid printable glyph.
+ Use the macro CHAR_PRINTABLE_P instead. */
+int
+char_printable_p (c)
+ int c;
+{
+ int charset, c1, c2;
+
+ if (ASCII_BYTE_P (c))
+ return 1;
+ else if (SINGLE_BYTE_CHAR_P (c))
+ return 0;
+ else if (c >= MAX_CHAR)
+ return 0;
+
+ SPLIT_CHAR (c, charset, c1, c2);
+ if (! CHARSET_DEFINED_P (charset))
+ return 0;
+ if (CHARSET_CHARS (charset) == 94
+ ? c1 <= 32 || c1 >= 127
+ : c1 < 32)
+ return 0;
+ if (CHARSET_DIMENSION (charset) == 2
+ && (CHARSET_CHARS (charset) == 94
+ ? c2 <= 32 || c2 >= 127
+ : c2 < 32))
+ return 0;
+ return 1;
+}
+
/* Translate character C by translation table TABLE. If C
is negative, translate a character specified by CHARSET, C1, and C2
(C1 and C2 are code points of the character). If no translation is
Lisp_Object ch;
int alt_charset, alt_c1, alt_c2, dimension;
- if (c < 0) c = MAKE_CHAR (charset, c1, c2);
+ if (c < 0) c = MAKE_CHAR (charset, (c1 & 0x7F) , (c2 & 0x7F));
if (!CHAR_TABLE_P (table)
- || (ch = Faref (table, make_number (c)), !INTEGERP (ch))
- || XINT (ch) < 0)
+ || (ch = Faref (table, make_number (c)), !NATNUMP (ch)))
return c;
SPLIT_CHAR (XFASTINT (ch), alt_charset, alt_c1, alt_c2);
dimension = CHARSET_DIMENSION (alt_charset);
- if (dimension == 1 && alt_c1 > 0 || dimension == 2 && alt_c2 > 0)
+ if ((dimension == 1 && alt_c1 > 0) || (dimension == 2 && alt_c2 > 0))
/* CH is not a generic character, just return it. */
return XFASTINT (ch);
unibyte_char_to_multibyte (c)
int c;
{
- if (c < 0400)
+ if (c < 0400 && c >= 0200)
{
int c_save = c;
if (! NILP (Vnonascii_translation_table))
{
c = XINT (Faref (Vnonascii_translation_table, make_number (c)));
- if (c >= 0400 && ! VALID_MULTIBYTE_CHAR_P (c))
+ if (c >= 0400 && ! char_valid_p (c, 0))
c = c_save + DEFAULT_NONASCII_INSERT_OFFSET;
}
else if (c >= 0240 && nonascii_insert_offset > 0)
{
c += nonascii_insert_offset;
- if (c < 0400 || ! VALID_MULTIBYTE_CHAR_P (c))
+ if (c < 0400 || ! char_valid_p (c, 0))
c = c_save + DEFAULT_NONASCII_INSERT_OFFSET;
}
else if (c >= 0240)
CHARSET_TABLE_ENTRY (charset)
= Fmake_vector (make_number (CHARSET_MAX_IDX), Qnil);
+ if (NILP (long_name))
+ long_name = short_name;
+ if (NILP (description))
+ description = long_name;
+
/* Get byte length of multibyte form, base leading-code, and
extended leading-code of the charset. See the comment under the
title "GENERAL NOTE on CHARACTER SET (CHARSET)" in charset.h. */
if (charset < MIN_CHARSET_PRIVATE_DIMENSION1)
{
/* Official charset, it doesn't have an extended leading-code. */
- if (charset != CHARSET_ASCII)
+ if (charset != CHARSET_ASCII && charset != CHARSET_8_BIT_GRAPHIC)
bytes += 1; /* For a base leading-code. */
leading_code_base = charset;
leading_code_ext = 0;
? LEADING_CODE_PRIVATE_21
: LEADING_CODE_PRIVATE_22)));
leading_code_ext = charset;
- }
-
- if (BYTES_BY_CHAR_HEAD (leading_code_base) != bytes)
- error ("Invalid dimension for the charset-ID %d", charset);
+ if (BYTES_BY_CHAR_HEAD (leading_code_base) != bytes)
+ error ("Invalid dimension for the charset-ID %d", charset);
+ }
CHARSET_TABLE_INFO (charset, CHARSET_ID_IDX) = charset_id;
CHARSET_TABLE_INFO (charset, CHARSET_BYTES_IDX) = make_number (bytes);
= make_number (-1);
}
- if (charset != CHARSET_ASCII
+ if (charset != CHARSET_ASCII && charset != CHARSET_8_BIT_GRAPHIC
&& charset < MIN_CHARSET_PRIVATE_DIMENSION1)
{
+ bytes_by_char_head[leading_code_base] = bytes;
width_by_char_head[leading_code_base] = XINT (width);
/* Update table emacs_code_class. */
}
/* Update table iso_charset_table. */
- if (ISO_CHARSET_TABLE (dimension, chars, iso_final_char) < 0)
+ if (XINT (iso_final_char) >= 0
+ && ISO_CHARSET_TABLE (dimension, chars, iso_final_char) < 0)
ISO_CHARSET_TABLE (dimension, chars, iso_final_char) = charset;
}
Lisp_Object val;
int charset;
- return ((SYMBOLP (charset_symbol)
- && (val = Fget (charset_symbol, Qcharset), VECTORP (val))
- && (charset = XINT (XVECTOR (val)->contents[CHARSET_ID_IDX]),
- CHARSET_VALID_P (charset)))
- ? charset : -1);
+ /* This originally used a ?: operator, but reportedly the HP-UX
+ compiler version HP92453-01 A.10.32.22 miscompiles that. */
+ if (SYMBOLP (charset_symbol)
+ && VECTORP (val = Fget (charset_symbol, Qcharset))
+ && CHARSET_VALID_P (charset =
+ XINT (XVECTOR (val)->contents[CHARSET_ID_IDX])))
+ return charset;
+ else
+ return -1;
}
/* Return an identification number for a new private charset of
if (dimension == 1)
{
- if (width == 1)
- from = LEADING_CODE_EXT_11, to = LEADING_CODE_EXT_12;
- else
- from = LEADING_CODE_EXT_12, to = LEADING_CODE_EXT_21;
+ from = LEADING_CODE_EXT_11;
+ to = LEADING_CODE_EXT_21;
}
else
{
- if (width == 1)
- from = LEADING_CODE_EXT_21, to = LEADING_CODE_EXT_22;
- else
- from = LEADING_CODE_EXT_22, to = LEADING_CODE_EXT_MAX + 1;
+ from = LEADING_CODE_EXT_21;
+ to = LEADING_CODE_EXT_MAX + 1;
}
for (charset = from; charset < to; charset++)
}
DEFUN ("define-charset", Fdefine_charset, Sdefine_charset, 3, 3, 0,
- "Define CHARSET-ID as the identification number of CHARSET with INFO-VECTOR.\n\
-If CHARSET-ID is nil, it is decided automatically, which means CHARSET is\n\
- treated as a private charset.\n\
-INFO-VECTOR is a vector of the format:\n\
- [DIMENSION CHARS WIDTH DIRECTION ISO-FINAL-CHAR ISO-GRAPHIC-PLANE\n\
- SHORT-NAME LONG-NAME DESCRIPTION]\n\
-The meanings of each elements is as follows:\n\
-DIMENSION (integer) is the number of bytes to represent a character: 1 or 2.\n\
-CHARS (integer) is the number of characters in a dimension: 94 or 96.\n\
-WIDTH (integer) is the number of columns a character in the charset\n\
-occupies on the screen: one of 0, 1, and 2.\n\
-\n\
-DIRECTION (integer) is the rendering direction of characters in the\n\
-charset when rendering. If 0, render from left to right, else\n\
-render from right to left.\n\
-\n\
-ISO-FINAL-CHAR (character) is the final character of the\n\
-corresponding ISO 2022 charset.\n\
-\n\
-ISO-GRAPHIC-PLANE (integer) is the graphic plane to be invoked\n\
-while encoding to variants of ISO 2022 coding system, one of the\n\
-following: 0/graphic-plane-left(GL), 1/graphic-plane-right(GR).\n\
-\n\
-SHORT-NAME (string) is the short name to refer to the charset.\n\
-\n\
-LONG-NAME (string) is the long name to refer to the charset.\n\
-\n\
-DESCRIPTION (string) is the description string of the charset.")
- (charset_id, charset_symbol, info_vector)
+ doc: /* Define CHARSET-ID as the identification number of CHARSET with INFO-VECTOR.
+If CHARSET-ID is nil, it is decided automatically, which means CHARSET is
+ treated as a private charset.
+INFO-VECTOR is a vector of the format:
+ [DIMENSION CHARS WIDTH DIRECTION ISO-FINAL-CHAR ISO-GRAPHIC-PLANE
+ SHORT-NAME LONG-NAME DESCRIPTION]
+The meanings of each elements is as follows:
+DIMENSION (integer) is the number of bytes to represent a character: 1 or 2.
+CHARS (integer) is the number of characters in a dimension: 94 or 96.
+WIDTH (integer) is the number of columns a character in the charset
+occupies on the screen: one of 0, 1, and 2.
+
+DIRECTION (integer) is the rendering direction of characters in the
+charset when rendering. If 0, render from left to right, else
+render from right to left.
+
+ISO-FINAL-CHAR (character) is the final character of the
+corresponding ISO 2022 charset.
+It may be -1 if the charset is internal use only.
+
+ISO-GRAPHIC-PLANE (integer) is the graphic plane to be invoked
+while encoding to variants of ISO 2022 coding system, one of the
+following: 0/graphic-plane-left(GL), 1/graphic-plane-right(GR).
+It may be -1 if the charset is internal use only.
+
+SHORT-NAME (string) is the short name to refer to the charset.
+
+LONG-NAME (string) is the long name to refer to the charset.
+
+DESCRIPTION (string) is the description string of the charset. */)
+ (charset_id, charset_symbol, info_vector)
Lisp_Object charset_id, charset_symbol, info_vector;
{
Lisp_Object *vec;
if (!NILP (charset_id))
- CHECK_NUMBER (charset_id, 0);
- CHECK_SYMBOL (charset_symbol, 1);
- CHECK_VECTOR (info_vector, 2);
+ CHECK_NUMBER (charset_id);
+ CHECK_SYMBOL (charset_symbol);
+ CHECK_VECTOR (info_vector);
if (! NILP (charset_id))
{
|| !INTEGERP (vec[1]) || !(XINT (vec[1]) == 94 || XINT (vec[1]) == 96)
|| !INTEGERP (vec[2]) || !(XINT (vec[2]) == 1 || XINT (vec[2]) == 2)
|| !INTEGERP (vec[3]) || !(XINT (vec[3]) == 0 || XINT (vec[3]) == 1)
- || !INTEGERP (vec[4]) || !(XINT (vec[4]) >= '0' && XINT (vec[4]) <= '~')
- || !INTEGERP (vec[5]) || !(XINT (vec[5]) == 0 || XINT (vec[5]) == 1)
+ || !INTEGERP (vec[4])
+ || !(XINT (vec[4]) == -1 || (XINT (vec[4]) >= '0' && XINT (vec[4]) <= '~'))
+ || !INTEGERP (vec[5])
+ || !(XINT (vec[5]) == -1 || XINT (vec[5]) == 0 || XINT (vec[5]) == 1)
|| !STRINGP (vec[6])
|| !STRINGP (vec[7])
|| !STRINGP (vec[8]))
error ("Invalid info-vector argument for defining charset %s",
- XSYMBOL (charset_symbol)->name->data);
+ SDATA (SYMBOL_NAME (charset_symbol)));
if (NILP (charset_id))
{
charset_id = get_new_private_charset_id (XINT (vec[0]), XINT (vec[2]));
if (XINT (charset_id) == 0)
error ("There's no room for a new private charset %s",
- XSYMBOL (charset_symbol)->name->data);
+ SDATA (SYMBOL_NAME (charset_symbol)));
}
update_charset_table (charset_id, vec[0], vec[1], vec[2], vec[3],
Fput (charset_symbol, Qcharset, CHARSET_TABLE_ENTRY (XINT (charset_id)));
CHARSET_SYMBOL (XINT (charset_id)) = charset_symbol;
Vcharset_list = Fcons (charset_symbol, Vcharset_list);
+ Fupdate_coding_systems_internal ();
return Qnil;
}
DEFUN ("generic-character-list", Fgeneric_character_list,
Sgeneric_character_list, 0, 0, 0,
- "Return a list of all possible generic characters.\n\
-It includes a generic character for a charset not yet defined.")
- ()
+ doc: /* Return a list of all possible generic characters.
+It includes a generic character for a charset not yet defined. */)
+ ()
{
return Vgeneric_character_list;
}
DEFUN ("get-unused-iso-final-char", Fget_unused_iso_final_char,
Sget_unused_iso_final_char, 2, 2, 0,
- "Return an unsed ISO's final char for a charset of DIMENISION and CHARS.\n\
-DIMENSION is the number of bytes to represent a character: 1 or 2.\n\
-CHARS is the number of characters in a dimension: 94 or 96.\n\
-\n\
-This final char is for private use, thus the range is `0' (48) .. `?' (63).\n\
-If there's no unused final char for the specified kind of charset,\n\
-return nil.")
- (dimension, chars)
+ doc: /* Return an unused ISO's final char for a charset of DIMENSION and CHARS.
+DIMENSION is the number of bytes to represent a character: 1 or 2.
+CHARS is the number of characters in a dimension: 94 or 96.
+
+This final char is for private use, thus the range is `0' (48) .. `?' (63).
+If there's no unused final char for the specified kind of charset,
+return nil. */)
+ (dimension, chars)
Lisp_Object dimension, chars;
{
int final_char;
- CHECK_NUMBER (dimension, 0);
- CHECK_NUMBER (chars, 1);
+ CHECK_NUMBER (dimension);
+ CHECK_NUMBER (chars);
if (XINT (dimension) != 1 && XINT (dimension) != 2)
error ("Invalid charset dimension %d, it should be 1 or 2",
XINT (dimension));
DEFUN ("declare-equiv-charset", Fdeclare_equiv_charset, Sdeclare_equiv_charset,
4, 4, 0,
- "Declare a charset of DIMENSION, CHARS, FINAL-CHAR is the same as CHARSET.\n\
-CHARSET should be defined by `defined-charset' in advance.")
- (dimension, chars, final_char, charset_symbol)
- Lisp_Object dimension, chars, final_char, charset_symbol;
+ doc: /* Declare an equivalent charset for ISO-2022 decoding.
+
+On decoding by an ISO-2022 base coding system, when a charset
+specified by DIMENSION, CHARS, and FINAL-CHAR is designated, behave as
+if CHARSET is designated instead. */)
+ (dimension, chars, final_char, charset)
+ Lisp_Object dimension, chars, final_char, charset;
{
- int charset;
+ int charset_id;
- CHECK_NUMBER (dimension, 0);
- CHECK_NUMBER (chars, 1);
- CHECK_NUMBER (final_char, 2);
- CHECK_SYMBOL (charset_symbol, 3);
+ CHECK_NUMBER (dimension);
+ CHECK_NUMBER (chars);
+ CHECK_NUMBER (final_char);
+ CHECK_SYMBOL (charset);
if (XINT (dimension) != 1 && XINT (dimension) != 2)
error ("Invalid DIMENSION %d, it should be 1 or 2", XINT (dimension));
error ("Invalid CHARS %d, it should be 94 or 96", XINT (chars));
if (XINT (final_char) < '0' || XFASTINT (final_char) > '~')
error ("Invalid FINAL-CHAR %c, it should be `0'..`~'", XINT (chars));
- if ((charset = get_charset_id (charset_symbol)) < 0)
- error ("Invalid charset %s", XSYMBOL (charset_symbol)->name->data);
+ if ((charset_id = get_charset_id (charset)) < 0)
+ error ("Invalid charset %s", SDATA (SYMBOL_NAME (charset)));
- ISO_CHARSET_TABLE (dimension, chars, final_char) = charset;
+ ISO_CHARSET_TABLE (dimension, chars, final_char) = charset_id;
return Qnil;
}
-/* Return number of different charsets in STR of length LEN. In
- addition, for each found charset N, CHARSETS[N] is set 1. The
- caller should allocate CHARSETS (MAX_CHARSET + 1 elements) in advance.
- It may lookup a translation table TABLE if supplied.
+/* Return information about charsets in the text at PTR of NBYTES
+ bytes, which are NCHARS characters. The value is:
- If CMPCHARP is nonzero and some composite character is found,
- CHARSETS[128] is also set 1 and the returned number is incremented
- by 1. */
+ 0: Each character is represented by one byte. This is always
+ true for unibyte text.
+ 1: No charsets other than ascii eight-bit-control,
+ eight-bit-graphic, and latin-1 are found.
+ 2: Otherwise.
+
+ In addition, if CHARSETS is nonzero, for each found charset N, set
+ CHARSETS[N] to 1. For that, callers should allocate CHARSETS
+ (MAX_CHARSET + 1 elements) in advance. It may lookup a translation
+ table TABLE if supplied. For invalid charsets, set CHARSETS[1] to
+ 1 (note that there's no charset whose ID is 1). */
int
-find_charset_in_str (str, len, charsets, table, cmpcharp)
- unsigned char *str;
- int len, *charsets;
+find_charset_in_text (ptr, nchars, nbytes, charsets, table)
+ const unsigned char *ptr;
+ int nchars, nbytes, *charsets;
Lisp_Object table;
- int cmpcharp;
{
- register int num = 0, c;
-
- if (! CHAR_TABLE_P (table))
- table = Qnil;
-
- while (len > 0)
+ if (nchars == nbytes)
{
- int bytes, charset;
- c = *str;
-
- if (c == LEADING_CODE_COMPOSITION)
+ if (charsets && nbytes > 0)
{
- int cmpchar_id = str_cmpchar_id (str, len);
- GLYPH *glyph;
+ const unsigned char *endp = ptr + nbytes;
+ int maskbits = 0;
- if (cmpchar_id >= 0)
+ while (ptr < endp && maskbits != 7)
{
- struct cmpchar_info *cmp_p = cmpchar_table[cmpchar_id];
- int i;
-
- for (i = 0; i < cmp_p->glyph_len; i++)
- {
- c = cmp_p->glyph[i];
- if (!NILP (table))
- {
- if ((c = translate_char (table, c, 0, 0, 0)) < 0)
- c = cmp_p->glyph[i];
- }
- if ((charset = CHAR_CHARSET (c)) < 0)
- charset = CHARSET_ASCII;
- if (!charsets[charset])
- {
- charsets[charset] = 1;
- num += 1;
- }
- }
- str += cmp_p->len;
- len -= cmp_p->len;
- if (cmpcharp && !charsets[CHARSET_COMPOSITION])
- {
- charsets[CHARSET_COMPOSITION] = 1;
- num += 1;
- }
- continue;
+ maskbits |= (*ptr < 0x80 ? 1 : *ptr < 0xA0 ? 2 : 4);
+ ptr++;
}
- charset = CHARSET_ASCII;
- bytes = 1;
+ if (maskbits & 1)
+ charsets[CHARSET_ASCII] = 1;
+ if (maskbits & 2)
+ charsets[CHARSET_8_BIT_CONTROL] = 1;
+ if (maskbits & 4)
+ charsets[CHARSET_8_BIT_GRAPHIC] = 1;
}
- else
+ return 0;
+ }
+ else
+ {
+ int return_val = 1;
+ int bytes, charset, c1, c2;
+
+ if (! CHAR_TABLE_P (table))
+ table = Qnil;
+
+ while (nchars-- > 0)
{
- c = STRING_CHAR_AND_LENGTH (str, len, bytes);
- if (! NILP (table))
+ SPLIT_MULTIBYTE_SEQ (ptr, len, bytes, charset, c1, c2);
+ ptr += bytes;
+
+ if (!CHARSET_DEFINED_P (charset))
+ charset = 1;
+ else if (! NILP (table))
{
- int c1 = translate_char (table, c, 0, 0, 0);
- if (c1 >= 0)
- c = c1;
+ int c = translate_char (table, -1, charset, c1, c2);
+ if (c >= 0)
+ charset = CHAR_CHARSET (c);
}
- charset = CHAR_CHARSET (c);
- }
- if (!charsets[charset])
- {
- charsets[charset] = 1;
- num += 1;
+ if (return_val == 1
+ && charset != CHARSET_ASCII
+ && charset != CHARSET_8_BIT_CONTROL
+ && charset != CHARSET_8_BIT_GRAPHIC
+ && charset != charset_latin_iso8859_1)
+ return_val = 2;
+
+ if (charsets)
+ charsets[charset] = 1;
+ else if (return_val == 2)
+ break;
}
- str += bytes;
- len -= bytes;
+ return return_val;
}
- return num;
}
DEFUN ("find-charset-region", Ffind_charset_region, Sfind_charset_region,
2, 3, 0,
- "Return a list of charsets in the region between BEG and END.\n\
-BEG and END are buffer positions.\n\
-If the region contains any composite character,\n\
-`composition' is included in the returned list.\n\
-Optional arg TABLE if non-nil is a translation table to look up.")
- (beg, end, table)
+ doc: /* Return a list of charsets in the region between BEG and END.
+BEG and END are buffer positions.
+Optional arg TABLE if non-nil is a translation table to look up.
+
+If the region contains invalid multibyte characters,
+`unknown' is included in the returned list.
+
+If the current buffer is unibyte, the returned list may contain
+only `ascii', `eight-bit-control', and `eight-bit-graphic'. */)
+ (beg, end, table)
Lisp_Object beg, end, table;
{
int charsets[MAX_CHARSET + 1];
from = XFASTINT (beg);
stop = to = XFASTINT (end);
- if (NILP (current_buffer->enable_multibyte_characters))
- return (from == to
- ? Qnil
- : Fcons (Qascii, Qnil));
-
if (from < GPT && GPT < to)
{
stop = GPT;
bzero (charsets, (MAX_CHARSET + 1) * sizeof (int));
while (1)
{
- find_charset_in_str (BYTE_POS_ADDR (from_byte), stop_byte - from_byte,
- charsets, table, 1);
+ find_charset_in_text (BYTE_POS_ADDR (from_byte), stop - from,
+ stop_byte - from_byte, charsets, table);
if (stop < to)
{
from = stop, from_byte = stop_byte;
}
val = Qnil;
- for (i = MAX_CHARSET; i >= 0; i--)
+ if (charsets[1])
+ val = Fcons (Qunknown, val);
+ for (i = MAX_CHARSET; i >= MIN_CHARSET_OFFICIAL_DIMENSION1; i--)
if (charsets[i])
val = Fcons (CHARSET_SYMBOL (i), val);
+ if (charsets[0])
+ val = Fcons (Qascii, val);
return val;
}
DEFUN ("find-charset-string", Ffind_charset_string, Sfind_charset_string,
1, 2, 0,
- "Return a list of charsets in STR.\n\
-If the string contains any composite characters,\n\
-`composition' is included in the returned list.\n\
-Optional arg TABLE if non-nil is a translation table to look up.")
- (str, table)
+ doc: /* Return a list of charsets in STR.
+Optional arg TABLE if non-nil is a translation table to look up.
+
+If the string contains invalid multibyte characters,
+`unknown' is included in the returned list.
+
+If STR is unibyte, the returned list may contain
+only `ascii', `eight-bit-control', and `eight-bit-graphic'. */)
+ (str, table)
Lisp_Object str, table;
{
int charsets[MAX_CHARSET + 1];
int i;
Lisp_Object val;
- CHECK_STRING (str, 0);
-
- if (! STRING_MULTIBYTE (str))
- return (XSTRING (str)->size == 0
- ? Qnil
- : Fcons (Qascii, Qnil));
+ CHECK_STRING (str);
bzero (charsets, (MAX_CHARSET + 1) * sizeof (int));
- find_charset_in_str (XSTRING (str)->data, STRING_BYTES (XSTRING (str)),
- charsets, table, 1);
+ find_charset_in_text (SDATA (str), SCHARS (str),
+ SBYTES (str), charsets, table);
+
val = Qnil;
- for (i = MAX_CHARSET; i >= 0; i--)
+ if (charsets[1])
+ val = Fcons (Qunknown, val);
+ for (i = MAX_CHARSET; i >= MIN_CHARSET_OFFICIAL_DIMENSION1; i--)
if (charsets[i])
val = Fcons (CHARSET_SYMBOL (i), val);
+ if (charsets[0])
+ val = Fcons (Qascii, val);
return val;
}
+
\f
DEFUN ("make-char-internal", Fmake_char_internal, Smake_char_internal, 1, 3, 0,
- "")
- (charset, code1, code2)
+ doc: /* Return a character made from arguments.
+Internal use only. */)
+ (charset, code1, code2)
Lisp_Object charset, code1, code2;
{
- CHECK_NUMBER (charset, 0);
+ int charset_id, c1, c2;
+
+ CHECK_NUMBER (charset);
+ charset_id = XINT (charset);
+ if (!CHARSET_DEFINED_P (charset_id))
+ error ("Invalid charset ID: %d", XINT (charset));
if (NILP (code1))
- XSETFASTINT (code1, 0);
+ c1 = 0;
else
- CHECK_NUMBER (code1, 1);
+ {
+ CHECK_NUMBER (code1);
+ c1 = XINT (code1);
+ }
if (NILP (code2))
- XSETFASTINT (code2, 0);
+ c2 = 0;
else
- CHECK_NUMBER (code2, 2);
-
- if (!CHARSET_DEFINED_P (XINT (charset)))
- error ("Invalid charset: %d", XINT (charset));
+ {
+ CHECK_NUMBER (code2);
+ c2 = XINT (code2);
+ }
- return make_number (MAKE_CHAR (XINT (charset), XINT (code1), XINT (code2)));
+ if (charset_id == CHARSET_ASCII)
+ {
+ if (c1 < 0 || c1 > 0x7F)
+ goto invalid_code_posints;
+ return make_number (c1);
+ }
+ else if (charset_id == CHARSET_8_BIT_CONTROL)
+ {
+ if (NILP (code1))
+ c1 = 0x80;
+ else if (c1 < 0x80 || c1 > 0x9F)
+ goto invalid_code_posints;
+ return make_number (c1);
+ }
+ else if (charset_id == CHARSET_8_BIT_GRAPHIC)
+ {
+ if (NILP (code1))
+ c1 = 0xA0;
+ else if (c1 < 0xA0 || c1 > 0xFF)
+ goto invalid_code_posints;
+ return make_number (c1);
+ }
+ else if (c1 < 0 || c1 > 0xFF || c2 < 0 || c2 > 0xFF)
+ goto invalid_code_posints;
+ c1 &= 0x7F;
+ c2 &= 0x7F;
+ if (c1 == 0
+ ? c2 != 0
+ : (c2 == 0
+ ? !CHAR_COMPONENTS_VALID_P (charset_id, c1, 0x20)
+ : !CHAR_COMPONENTS_VALID_P (charset_id, c1, c2)))
+ goto invalid_code_posints;
+ return make_number (MAKE_CHAR (charset_id, c1, c2));
+
+ invalid_code_posints:
+ error ("Invalid code points for charset ID %d: %d %d", charset_id, c1, c2);
}
DEFUN ("split-char", Fsplit_char, Ssplit_char, 1, 1, 0,
- "Return list of charset and one or two position-codes of CHAR.")
- (ch)
+ doc: /* Return list of charset and one or two position-codes of CH.
+If CH is invalid as a character code,
+return a list of symbol `unknown' and CH. */)
+ (ch)
Lisp_Object ch;
{
- Lisp_Object val;
- int charset, c1, c2;
+ int c, charset, c1, c2;
- CHECK_NUMBER (ch, 0);
+ CHECK_NUMBER (ch);
+ c = XFASTINT (ch);
+ if (!CHAR_VALID_P (c, 1))
+ return Fcons (Qunknown, Fcons (ch, Qnil));
SPLIT_CHAR (XFASTINT (ch), charset, c1, c2);
return (c2 >= 0
? Fcons (CHARSET_SYMBOL (charset),
}
DEFUN ("char-charset", Fchar_charset, Schar_charset, 1, 1, 0,
- "Return charset of CHAR.")
- (ch)
+ doc: /* Return charset of CH. */)
+ (ch)
Lisp_Object ch;
{
- CHECK_NUMBER (ch, 0);
+ CHECK_NUMBER (ch);
return CHARSET_SYMBOL (CHAR_CHARSET (XINT (ch)));
}
DEFUN ("charset-after", Fcharset_after, Scharset_after, 0, 1, 0,
- "Return charset of a character in current buffer at position POS.\n\
-If POS is nil, it defauls to the current point.")
- (pos)
+ doc: /* Return charset of a character in the current buffer at position POS.
+If POS is nil, it defauls to the current point.
+If POS is out of range, the value is nil. */)
+ (pos)
Lisp_Object pos;
{
- register int pos_byte, c, charset;
- register unsigned char *p;
+ Lisp_Object ch;
+ int charset;
- if (NILP (pos))
- pos_byte = PT_BYTE;
- else if (MARKERP (pos))
- pos_byte = marker_byte_position (pos);
- else
- {
- CHECK_NUMBER (pos, 0);
- pos_byte = CHAR_TO_BYTE (XINT (pos));
- }
- p = BYTE_POS_ADDR (pos_byte);
- c = STRING_CHAR (p, Z_BYTE - pos_byte);
- charset = CHAR_CHARSET (c);
+ ch = Fchar_after (pos);
+ if (! INTEGERP (ch))
+ return ch;
+ charset = CHAR_CHARSET (XINT (ch));
return CHARSET_SYMBOL (charset);
}
DEFUN ("iso-charset", Fiso_charset, Siso_charset, 3, 3, 0,
- "Return charset of ISO's specification DIMENSION, CHARS, and FINAL-CHAR.\n\
-\n\
-ISO 2022's designation sequence (escape sequence) distinguishes charsets\n\
-by their DIMENSION, CHARS, and FINAL-CHAR,\n\
-where as Emacs distinguishes them by charset symbol.\n\
-See the documentation of the function `charset-info' for the meanings of\n\
-DIMENSION, CHARS, and FINAL-CHAR.")
- (dimension, chars, final_char)
+ doc: /* Return charset of ISO's specification DIMENSION, CHARS, and FINAL-CHAR.
+
+ISO 2022's designation sequence (escape sequence) distinguishes charsets
+by their DIMENSION, CHARS, and FINAL-CHAR,
+where as Emacs distinguishes them by charset symbol.
+See the documentation of the function `charset-info' for the meanings of
+DIMENSION, CHARS, and FINAL-CHAR. */)
+ (dimension, chars, final_char)
Lisp_Object dimension, chars, final_char;
{
int charset;
- CHECK_NUMBER (dimension, 0);
- CHECK_NUMBER (chars, 1);
- CHECK_NUMBER (final_char, 2);
+ CHECK_NUMBER (dimension);
+ CHECK_NUMBER (chars);
+ CHECK_NUMBER (final_char);
if ((charset = ISO_CHARSET_TABLE (dimension, chars, final_char)) < 0)
return Qnil;
return CHARSET_SYMBOL (charset);
}
-/* If GENERICP is nonzero, return nonzero iff C is a valid normal or
- generic character. If GENERICP is zero, return nonzero iff C is a
+/* If GENERICP is nonzero, return nonzero if C is a valid normal or
+ generic character. If GENERICP is zero, return nonzero if C is a
valid normal character. Do not call this function directly,
instead use macro CHAR_VALID_P. */
int
{
int charset, c1, c2;
- if (c < 0)
+ if (c < 0 || c >= MAX_CHAR)
return 0;
if (SINGLE_BYTE_CHAR_P (c))
return 1;
- SPLIT_NON_ASCII_CHAR (c, charset, c1, c2);
- if (!CHARSET_DEFINED_P (charset))
- return 0;
- return (c < MIN_CHAR_COMPOSITION
- ? ((c & CHAR_FIELD1_MASK) /* i.e. dimension of C is two. */
- ? (genericp && c1 == 0 && c2 == 0
- || c1 >= 32 && c2 >= 32)
- : (genericp && c1 == 0
- || c1 >= 32))
- : c < MIN_CHAR_COMPOSITION + n_cmpchars);
+ SPLIT_CHAR (c, charset, c1, c2);
+ if (genericp)
+ {
+ if (c1)
+ {
+ if (c2 <= 0) c2 = 0x20;
+ }
+ else
+ {
+ if (c2 <= 0) c1 = c2 = 0x20;
+ }
+ }
+ return (CHARSET_DEFINED_P (charset)
+ && CHAR_COMPONENTS_VALID_P (charset, c1, c2));
}
DEFUN ("char-valid-p", Fchar_valid_p, Schar_valid_p, 1, 2, 0,
- "Return t if OBJECT is a valid normal character.\n\
-If optional arg GENERICP is non-nil, also return t if OBJECT is\n\
-a valid generic character.")
- (object, genericp)
+ doc: /* Return t if OBJECT is a valid normal character.
+If optional arg GENERICP is non-nil, also return t if OBJECT is
+a valid generic character. */)
+ (object, genericp)
Lisp_Object object, genericp;
{
if (! NATNUMP (object))
DEFUN ("unibyte-char-to-multibyte", Funibyte_char_to_multibyte,
Sunibyte_char_to_multibyte, 1, 1, 0,
- "Convert the unibyte character CH to multibyte character.\n\
-The conversion is done based on `nonascii-translation-table' (which see)\n\
- or `nonascii-insert-offset' (which see).")
- (ch)
+ doc: /* Convert the unibyte character CH to multibyte character.
+The conversion is done based on `nonascii-translation-table' (which see)
+ or `nonascii-insert-offset' (which see). */)
+ (ch)
Lisp_Object ch;
{
int c;
- CHECK_NUMBER (ch, 0);
+ CHECK_NUMBER (ch);
c = XINT (ch);
if (c < 0 || c >= 0400)
error ("Invalid unibyte character: %d", c);
DEFUN ("multibyte-char-to-unibyte", Fmultibyte_char_to_unibyte,
Smultibyte_char_to_unibyte, 1, 1, 0,
- "Convert the multibyte character CH to unibyte character.\n\
-The conversion is done based on `nonascii-translation-table' (which see)\n\
- or `nonascii-insert-offset' (which see).")
- (ch)
+ doc: /* Convert the multibyte character CH to unibyte character.
+The conversion is done based on `nonascii-translation-table' (which see)
+ or `nonascii-insert-offset' (which see). */)
+ (ch)
Lisp_Object ch;
{
int c;
- CHECK_NUMBER (ch, 0);
+ CHECK_NUMBER (ch);
c = XINT (ch);
- if (c < 0)
+ if (! CHAR_VALID_P (c, 0))
error ("Invalid multibyte character: %d", c);
c = multibyte_char_to_unibyte (c, Qnil);
if (c < 0)
}
DEFUN ("char-bytes", Fchar_bytes, Schar_bytes, 1, 1, 0,
- "Return 1 regardless of the argument CHAR.\n\
-This is now an obsolete function. We keep it just for backward compatibility.")
- (ch)
+ doc: /* Return 1 regardless of the argument CH. */)
+ (ch)
Lisp_Object ch;
{
- Lisp_Object val;
-
- CHECK_NUMBER (ch, 0);
+ CHECK_NUMBER (ch);
return make_number (1);
}
char_bytes (c)
int c;
{
- int bytes;
-
- if (COMPOSITE_CHAR_P (c))
- {
- unsigned int id = COMPOSITE_CHAR_ID (c);
-
- bytes = (id < n_cmpchars ? cmpchar_table[id]->len : 1);
- }
- else
- {
- int charset = CHAR_CHARSET (c);
+ int charset;
- bytes = CHARSET_DEFINED_P (charset) ? CHARSET_BYTES (charset) : 1;
- }
+ if (ASCII_BYTE_P (c) || (c & ~((1 << CHARACTERBITS) -1)))
+ return 1;
+ if (SINGLE_BYTE_CHAR_P (c) && c >= 0xA0)
+ return 1;
- return bytes;
+ charset = CHAR_CHARSET (c);
+ return (CHARSET_DEFINED_P (charset) ? CHARSET_BYTES (charset) : 1);
}
/* Return the width of character of which multi-byte form starts with
: 4))))
DEFUN ("char-width", Fchar_width, Schar_width, 1, 1, 0,
- "Return width of CHAR when displayed in the current buffer.\n\
-The width is measured by how many columns it occupies on the screen.")
- (ch)
- Lisp_Object ch;
+ doc: /* Return width of CH 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 val, disp;
int c;
struct Lisp_Char_Table *dp = buffer_display_table ();
- CHECK_NUMBER (ch, 0);
+ CHECK_NUMBER (ch);
c = XINT (ch);
XSETINT (val, XVECTOR (disp)->size);
else if (SINGLE_BYTE_CHAR_P (c))
XSETINT (val, ONE_BYTE_CHAR_WIDTH (c));
- else if (COMPOSITE_CHAR_P (c))
- {
- int id = COMPOSITE_CHAR_ID (XFASTINT (ch));
- XSETFASTINT (val, (id < n_cmpchars ? cmpchar_table[id]->width : 0));
- }
else
{
int charset = CHAR_CHARSET (c);
unsigned char *str;
int len;
{
- unsigned char *endp = str + 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. */
+
+int
+c_string_width (str, len, precision, nchars, nbytes)
+ const unsigned char *str;
+ int len, precision, *nchars, *nbytes;
+{
+ int i = 0, i_byte = 0;
int width = 0;
+ int chars;
struct Lisp_Char_Table *dp = buffer_display_table ();
- while (str < endp)
+ while (i_byte < len)
{
- if (*str == LEADING_CODE_COMPOSITION)
+ int bytes, thiswidth;
+ Lisp_Object val;
+
+ if (dp)
{
- int id = str_cmpchar_id (str, endp - str);
+ int c = STRING_CHAR_AND_LENGTH (str + i_byte, len - i_byte, bytes);
- if (id < 0)
- {
- width += 4;
- str++;
- }
+ chars = 1;
+ val = DISP_CHAR_VECTOR (dp, c);
+ if (VECTORP (val))
+ thiswidth = XVECTOR (val)->size;
else
- {
- width += cmpchar_table[id]->width;
- str += cmpchar_table[id]->len;
- }
+ thiswidth = ONE_BYTE_CHAR_WIDTH (str[i_byte]);
}
else
{
- Lisp_Object disp;
- int thislen;
- int c = STRING_CHAR_AND_LENGTH (str, endp - str, thislen);
+ chars = 1;
+ PARSE_MULTIBYTE_SEQ (str + i_byte, len - i_byte, bytes);
+ thiswidth = ONE_BYTE_CHAR_WIDTH (str[i_byte]);
+ }
- /* Get the way the display table would display it. */
- if (dp)
- disp = DISP_CHAR_VECTOR (dp, c);
- else
- disp = Qnil;
+ 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 = SCHARS (string);
+ int len_byte = SBYTES (string);
+ /* This set multibyte to 0 even if STRING is multibyte when it
+ contains only ascii and eight-bit-graphic, but that's
+ intentional. */
+ int multibyte = len < len_byte;
+ const unsigned char *str = SDATA (string);
+ 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;
- if (VECTORP (disp))
- width += XVECTOR (disp)->size;
+ if (multibyte)
+ c = STRING_CHAR_AND_LENGTH (str + i_byte, len - i_byte, bytes);
else
- width += ONE_BYTE_CHAR_WIDTH (*str);
+ c = str[i_byte], bytes = 1;
+ chars = 1;
+ val = DISP_CHAR_VECTOR (dp, c);
+ if (VECTORP (val))
+ thiswidth = XVECTOR (val)->size;
+ else
+ thiswidth = ONE_BYTE_CHAR_WIDTH (str[i_byte]);
+ }
+ else
+ {
+ chars = 1;
+ if (multibyte)
+ PARSE_MULTIBYTE_SEQ (str + i_byte, len_byte - i_byte, bytes);
+ else
+ bytes = 1;
+ thiswidth = ONE_BYTE_CHAR_WIDTH (str[i_byte]);
+ }
- str += thislen;
+ 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,
- "Return width of STRING when displayed in the current buffer.\n\
-Width is measured by how many columns it occupies on the screen.\n\
-When calculating width of a multibyte character in STRING,\n\
-only the base leading-code is considered; the validity of\n\
-the following bytes is not checked.")
- (str)
- Lisp_Object str;
+ 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. */)
+ (string)
+ Lisp_Object string;
{
Lisp_Object val;
- CHECK_STRING (str, 0);
- XSETFASTINT (val, strwidth (XSTRING (str)->data,
- STRING_BYTES (XSTRING (str))));
+ CHECK_STRING (string);
+ XSETFASTINT (val, lisp_string_width (string, -1, NULL, NULL));
return val;
}
DEFUN ("char-direction", Fchar_direction, Schar_direction, 1, 1, 0,
- "Return the direction of CHAR.\n\
-The returned value is 0 for left-to-right and 1 for right-to-left.")
- (ch)
+ doc: /* Return the direction of CH.
+The returned value is 0 for left-to-right and 1 for right-to-left. */)
+ (ch)
Lisp_Object ch;
{
int charset;
- CHECK_NUMBER (ch, 0);
+ CHECK_NUMBER (ch);
charset = CHAR_CHARSET (XFASTINT (ch));
if (!CHARSET_DEFINED_P (charset))
invalid_character (XINT (ch));
return CHARSET_TABLE_INFO (charset, CHARSET_DIRECTION_IDX);
}
-DEFUN ("chars-in-region", Fchars_in_region, Schars_in_region, 2, 2, 0,
- "Return number of characters between BEG and END.")
- (beg, end)
- Lisp_Object beg, end;
-{
- int from, to;
-
- CHECK_NUMBER_COERCE_MARKER (beg, 0);
- CHECK_NUMBER_COERCE_MARKER (end, 1);
-
- 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.
However, if the current buffer has enable-multibyte-characters = nil,
int
chars_in_text (ptr, nbytes)
- unsigned char *ptr;
+ const unsigned char *ptr;
int nbytes;
{
- unsigned char *endp, c;
- int chars;
-
/* current_buffer is null at early stages of Emacs initialization. */
if (current_buffer == 0
|| NILP (current_buffer->enable_multibyte_characters))
return nbytes;
- endp = ptr + nbytes;
- chars = 0;
-
- while (ptr < endp)
- {
- c = *ptr++;
-
- if (BASE_LEADING_CODE_P (c))
- while (ptr < endp && ! CHAR_HEAD_P (*ptr)) ptr++;
- chars++;
- }
-
- return chars;
+ return multibyte_chars_in_text (ptr, nbytes);
}
/* Return the number of characters in the NBYTES bytes at PTR.
int
multibyte_chars_in_text (ptr, nbytes)
- unsigned char *ptr;
+ const unsigned char *ptr;
int nbytes;
{
- unsigned char *endp, c;
- int chars;
+ const unsigned char *endp;
+ int chars, bytes;
endp = ptr + nbytes;
chars = 0;
while (ptr < endp)
{
- c = *ptr++;
-
- if (BASE_LEADING_CODE_P (c))
- while (ptr < endp && ! CHAR_HEAD_P (*ptr)) ptr++;
+ PARSE_MULTIBYTE_SEQ (ptr, endp - ptr, bytes);
+ ptr += bytes;
chars++;
}
return chars;
}
-DEFUN ("string", Fstring, Sstring, 1, MANY, 0,
- "Concatenate all the argument characters and make the result a string.")
- (n, args)
- int n;
- Lisp_Object *args;
+/* Parse unibyte text at STR of LEN bytes as multibyte text, and
+ count the numbers of characters and bytes in it. On counting
+ bytes, pay attention to the fact that 8-bit characters in the range
+ 0x80..0x9F are represented by 2 bytes in multibyte text. */
+void
+parse_str_as_multibyte (str, len, nchars, nbytes)
+ const unsigned char *str;
+ int len, *nchars, *nbytes;
{
- int i;
- unsigned char *buf
- = (unsigned char *) alloca (MAX_LENGTH_OF_MULTI_BYTE_FORM * n);
- unsigned char *p = buf;
- Lisp_Object val;
+ const unsigned char *endp = str + len;
+ int n, chars = 0, bytes = 0;
- for (i = 0; i < n; i++)
+ while (str < endp)
{
- int c, len;
- unsigned char *str;
-
- if (!INTEGERP (args[i]))
- CHECK_NUMBER (args[i], 0);
- c = XINT (args[i]);
- len = CHAR_STRING (c, p, str);
- if (p != str)
- /* C is a composite character. */
- bcopy (str, p, len);
- p += len;
+ if (UNIBYTE_STR_AS_MULTIBYTE_P (str, endp - str, n))
+ str += n, bytes += n;
+ else
+ str++, bytes += 2;
+ chars++;
}
-
- /* Here, we can't use make_string_from_bytes because of byte
- combining problem. */
- val = make_string (buf, p - buf);
- return val;
+ *nchars = chars;
+ *nbytes = bytes;
+ return;
}
-#endif /* emacs */
-\f
-/*** Composite characters staffs ***/
-
-/* Each composite character is identified by CMPCHAR-ID which is
- assigned when Emacs needs the character code of the composite
- character (e.g. when displaying it on the screen). See the
- document "GENERAL NOTE on COMPOSITE CHARACTER" in `charset.h' how a
- composite character is represented in Emacs. */
-
-/* If `static' is defined, it means that it is defined to null string. */
-#ifndef static
-/* The following function is copied from lread.c. */
-static int
-hash_string (ptr, len)
- unsigned char *ptr;
- int len;
+/* Arrange unibyte text at STR of NBYTES bytes as multibyte text.
+ It actually converts only 8-bit characters in the range 0x80..0x9F
+ that don't contruct multibyte characters to multibyte forms. 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;
{
- register unsigned char *p = ptr;
- register unsigned char *end = p + len;
- register unsigned char c;
- register int hash = 0;
+ unsigned char *p = str, *endp = str + nbytes;
+ unsigned char *to;
+ int chars = 0;
+ int n;
+
+ while (p < endp && UNIBYTE_STR_AS_MULTIBYTE_P (p, endp - p, n))
+ p += n, chars++;
+ if (nchars)
+ *nchars = chars;
+ if (p == endp)
+ return nbytes;
- while (p != end)
+ to = p;
+ nbytes = endp - p;
+ endp = str + len;
+ safe_bcopy (p, endp - nbytes, nbytes);
+ p = endp - nbytes;
+ while (p < endp)
{
- c = *p++;
- if (c >= 0140) c -= 40;
- hash = ((hash<<3) + (hash>>28) + c);
+ if (UNIBYTE_STR_AS_MULTIBYTE_P (p, endp - p, n))
+ {
+ while (n--)
+ *to++ = *p++;
+ }
+ else
+ {
+ *to++ = LEADING_CODE_8_BIT_CONTROL;
+ *to++ = *p++ + 0x20;
+ }
+ chars++;
}
- return hash & 07777777777;
+ if (nchars)
+ *nchars = chars;
+ return (to - str);
}
-#endif
-
-#define CMPCHAR_HASH_TABLE_SIZE 0xFFF
-
-static int *cmpchar_hash_table[CMPCHAR_HASH_TABLE_SIZE];
-/* Each element of `cmpchar_hash_table' is a pointer to an array of
- integer, where the 1st element is the size of the array, the 2nd
- element is how many elements are actually used in the array, and
- the remaining elements are CMPCHAR-IDs of composite characters of
- the same hash value. */
-#define CMPCHAR_HASH_SIZE(table) table[0]
-#define CMPCHAR_HASH_USED(table) table[1]
-#define CMPCHAR_HASH_CMPCHAR_ID(table, i) table[i]
+/* 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'. */
-/* Return CMPCHAR-ID of the composite character in STR of the length
- LEN. If the composite character has not yet been registered,
- register it in `cmpchar_table' and assign new CMPCHAR-ID. This
- is the sole function for assigning CMPCHAR-ID. */
int
-str_cmpchar_id (str, len)
- const unsigned char *str;
+parse_str_to_multibyte (str, len)
+ unsigned char *str;
int len;
{
- int hash_idx, *hashp;
- unsigned char *buf;
- int embedded_rule; /* 1 if composition rule is embedded. */
- int chars; /* number of components. */
- int i;
- struct cmpchar_info *cmpcharp;
-
- /* The second byte 0xFF means compostion rule is embedded. */
- embedded_rule = (str[1] == 0xFF);
-
- /* At first, get the actual length of the composite character. */
- {
- const unsigned char *p, *endp = str + 1, *lastp = str + len;
- int bytes;
-
- while (endp < lastp && ! CHAR_HEAD_P (*endp)) endp++;
- if (endp - str < 5)
- /* Any composite char have at least 5-byte length. */
- return -1;
-
- chars = 0;
- p = str + 1;
- while (p < endp)
- {
- if (embedded_rule)
- {
- p++;
- if (p >= endp)
- return -1;
- }
- /* No need of checking if *P is 0xA0 because
- BYTES_BY_CHAR_HEAD (0x80) surely returns 2. */
- p += BYTES_BY_CHAR_HEAD (*p - 0x20);
- chars++;
- }
- if (p > endp || chars < 2 || chars > MAX_COMPONENT_COUNT)
- /* Invalid components. */
- return -1;
- len = p - str;
- }
- hash_idx = hash_string (str, len) % CMPCHAR_HASH_TABLE_SIZE;
- hashp = cmpchar_hash_table[hash_idx];
-
- /* Then, look into the hash table. */
- if (hashp != NULL)
- /* Find the correct one among composite characters of the same
- hash value. */
- for (i = 2; i < CMPCHAR_HASH_USED (hashp); i++)
- {
- cmpcharp = cmpchar_table[CMPCHAR_HASH_CMPCHAR_ID (hashp, i)];
- if (len == cmpcharp->len
- && ! bcmp (str, cmpcharp->data, len))
- return CMPCHAR_HASH_CMPCHAR_ID (hashp, i);
- }
-
- /* We have to register the composite character in cmpchar_table. */
- if (n_cmpchars > (CHAR_FIELD2_MASK | CHAR_FIELD3_MASK))
- /* No, we have no more room for a new composite character. */
- return -1;
-
- /* Make the entry in hash table. */
- if (hashp == NULL)
- {
- /* Make a table for 8 composite characters initially. */
- hashp = (cmpchar_hash_table[hash_idx]
- = (int *) xmalloc (sizeof (int) * (2 + 8)));
- CMPCHAR_HASH_SIZE (hashp) = 10;
- CMPCHAR_HASH_USED (hashp) = 2;
- }
- else if (CMPCHAR_HASH_USED (hashp) >= CMPCHAR_HASH_SIZE (hashp))
- {
- CMPCHAR_HASH_SIZE (hashp) += 8;
- hashp = (cmpchar_hash_table[hash_idx]
- = (int *) xrealloc (hashp,
- sizeof (int) * CMPCHAR_HASH_SIZE (hashp)));
- }
- CMPCHAR_HASH_CMPCHAR_ID (hashp, CMPCHAR_HASH_USED (hashp)) = n_cmpchars;
- CMPCHAR_HASH_USED (hashp)++;
-
- /* Set information of the composite character in cmpchar_table. */
- if (cmpchar_table_size == 0)
- {
- /* This is the first composite character to be registered. */
- cmpchar_table_size = 256;
- cmpchar_table
- = (struct cmpchar_info **) xmalloc (sizeof (cmpchar_table[0])
- * cmpchar_table_size);
- }
- else if (cmpchar_table_size <= n_cmpchars)
- {
- cmpchar_table_size += 256;
- cmpchar_table
- = (struct cmpchar_info **) xrealloc (cmpchar_table,
- sizeof (cmpchar_table[0])
- * cmpchar_table_size);
- }
-
- cmpcharp = (struct cmpchar_info *) xmalloc (sizeof (struct cmpchar_info));
-
- cmpcharp->len = len;
- cmpcharp->data = (unsigned char *) xmalloc (len + 1);
- bcopy (str, cmpcharp->data, len);
- cmpcharp->data[len] = 0;
- cmpcharp->glyph_len = chars;
- cmpcharp->glyph = (GLYPH *) xmalloc (sizeof (GLYPH) * chars);
- if (embedded_rule)
- {
- cmpcharp->cmp_rule = (unsigned char *) xmalloc (chars);
- cmpcharp->col_offset = (float *) xmalloc (sizeof (float) * chars);
- }
- else
- {
- cmpcharp->cmp_rule = NULL;
- cmpcharp->col_offset = NULL;
- }
-
- /* Setup GLYPH data and composition rules (if any) so as not to make
- them every time on displaying. */
- {
- unsigned char *bufp;
- int width;
- float leftmost = 0.0, rightmost = 1.0;
-
- if (embedded_rule)
- /* At first, col_offset[N] is set to relative to col_offset[0]. */
- cmpcharp->col_offset[0] = 0;
-
- for (i = 0, bufp = cmpcharp->data + 1; i < chars; i++)
- {
- if (embedded_rule)
- cmpcharp->cmp_rule[i] = *bufp++;
-
- if (*bufp == 0xA0) /* This is an ASCII character. */
- {
- cmpcharp->glyph[i] = FAST_MAKE_GLYPH ((*++bufp & 0x7F), 0);
- width = 1;
- bufp++;
- }
- else /* Multibyte character. */
- {
- /* Make `bufp' point normal multi-byte form temporally. */
- *bufp -= 0x20;
- cmpcharp->glyph[i]
- = FAST_MAKE_GLYPH (string_to_non_ascii_char (bufp, 4, 0, 0), 0);
- width = WIDTH_BY_CHAR_HEAD (*bufp);
- *bufp += 0x20;
- bufp += BYTES_BY_CHAR_HEAD (*bufp - 0x20);
- }
-
- if (embedded_rule && i > 0)
- {
- /* Reference points (global_ref and new_ref) are
- encoded as below:
-
- 0--1--2 -- ascent
- | |
- | |
- | 4 -+--- center
- -- 3 5 -- baseline
- | |
- 6--7--8 -- descent
-
- Now, we calculate the column offset of the new glyph
- from the left edge of the first glyph. This can avoid
- the same calculation everytime displaying this
- composite character. */
-
- /* Reference points of global glyph and new glyph. */
- int global_ref = (cmpcharp->cmp_rule[i] - 0xA0) / 9;
- int new_ref = (cmpcharp->cmp_rule[i] - 0xA0) % 9;
- /* Column offset relative to the first glyph. */
- float left = (leftmost
- + (global_ref % 3) * (rightmost - leftmost) / 2.0
- - (new_ref % 3) * width / 2.0);
-
- cmpcharp->col_offset[i] = left;
- if (left < leftmost)
- leftmost = left;
- if (left + width > rightmost)
- rightmost = left + width;
- }
- else
- {
- if (width > rightmost)
- rightmost = width;
- }
- }
- if (embedded_rule)
- {
- /* Now col_offset[N] are relative to the left edge of the
- first component. Make them relative to the left edge of
- overall glyph. */
- for (i = 0; i < chars; i++)
- cmpcharp->col_offset[i] -= leftmost;
- /* Make rightmost holds width of overall glyph. */
- rightmost -= leftmost;
- }
-
- cmpcharp->width = rightmost;
- if (cmpcharp->width < rightmost)
- /* To get a ceiling integer value. */
- cmpcharp->width++;
- }
-
- cmpchar_table[n_cmpchars] = cmpcharp;
+ unsigned char *endp = str + len;
+ int bytes;
- return n_cmpchars++;
+ for (bytes = 0; str < endp; str++)
+ bytes += (*str < 0x80 || *str >= 0xA0) ? 1 : 2;
+ return bytes;
}
-/* Return the Nth element of the composite character C. If NOERROR is
- nonzero, return 0 on error condition (C is an invalid composite
- charcter, or N is out of range). */
+/* Convert unibyte text at STR of NBYTES bytes to 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
-cmpchar_component (c, n, noerror)
- int c, n, noerror;
+str_to_multibyte (str, len, bytes)
+ unsigned char *str;
+ int len, bytes;
{
- int id = COMPOSITE_CHAR_ID (c);
-
- if (id < 0 || id >= n_cmpchars)
- {
- /* C is not a valid composite character. */
- if (noerror) return 0;
- error ("Invalid composite character: %d", c) ;
- }
- if (n >= cmpchar_table[id]->glyph_len)
+ unsigned char *p = str, *endp = str + bytes;
+ unsigned char *to;
+
+ while (p < endp && (*p < 0x80 || *p >= 0xA0)) p++;
+ if (p == endp)
+ return bytes;
+ to = p;
+ bytes = endp - p;
+ endp = str + len;
+ safe_bcopy (p, endp - bytes, bytes);
+ p = endp - bytes;
+ while (p < endp)
{
- /* No such component. */
- if (noerror) return 0;
- args_out_of_range (make_number (c), make_number (n));
+ if (*p < 0x80 || *p >= 0xA0)
+ *to++ = *p++;
+ else
+ *to++ = LEADING_CODE_8_BIT_CONTROL, *to++ = *p++ + 0x20;
}
- /* No face data is stored in glyph code. */
- return ((int) (cmpchar_table[id]->glyph[n]));
-}
-
-DEFUN ("cmpcharp", Fcmpcharp, Scmpcharp, 1, 1, 0,
- "T if CHAR is a composite character.")
- (ch)
- Lisp_Object ch;
-{
- CHECK_NUMBER (ch, 0);
- return (COMPOSITE_CHAR_P (XINT (ch)) ? Qt : Qnil);
+ return (to - str);
}
-DEFUN ("composite-char-component", Fcmpchar_component, Scmpchar_component,
- 2, 2, 0,
- "Return the Nth component character of composite character CHARACTER.")
- (character, n)
- Lisp_Object character, n;
-{
- int id;
-
- CHECK_NUMBER (character, 0);
- CHECK_NUMBER (n, 1);
-
- return (make_number (cmpchar_component (XINT (character), XINT (n), 0)));
-}
-
-DEFUN ("composite-char-composition-rule", Fcmpchar_cmp_rule, Scmpchar_cmp_rule,
- 2, 2, 0,
- "Return the Nth composition rule of composite character CHARACTER.\n\
-The returned rule is for composing the Nth component\n\
-on the (N-1)th component.\n\
-If CHARACTER should be composed relatively or N is 0, return 255.")
- (character, n)
- Lisp_Object character, n;
-{
- int id;
-
- CHECK_NUMBER (character, 0);
- CHECK_NUMBER (n, 1);
-
- id = COMPOSITE_CHAR_ID (XINT (character));
- if (id < 0 || id >= n_cmpchars)
- error ("Invalid composite character: %d", XINT (character));
- if (XINT (n) < 0 || XINT (n) >= cmpchar_table[id]->glyph_len)
- args_out_of_range (character, n);
+/* Arrange multibyte text at STR of LEN bytes as a unibyte text. It
+ actually converts only 8-bit characters in the range 0x80..0x9F to
+ unibyte forms. */
- return make_number (cmpchar_table[id]->cmp_rule
- ? cmpchar_table[id]->cmp_rule[XINT (n)]
- : 255);
-}
-
-DEFUN ("composite-char-composition-rule-p", Fcmpchar_cmp_rule_p,
- Scmpchar_cmp_rule_p, 1, 1, 0,
- "Return non-nil if composite character CHARACTER contains a embedded rule.")
- (character)
- Lisp_Object character;
+int
+str_as_unibyte (str, bytes)
+ unsigned char *str;
+ int bytes;
{
- int id;
-
- CHECK_NUMBER (character, 0);
- id = COMPOSITE_CHAR_ID (XINT (character));
- if (id < 0 || id >= n_cmpchars)
- error ("Invalid composite character: %d", XINT (character));
+ unsigned char *p = str, *endp = str + bytes;
+ unsigned char *to = str;
- return (cmpchar_table[id]->cmp_rule ? Qt : Qnil);
+ while (p < endp && *p != LEADING_CODE_8_BIT_CONTROL) p++;
+ to = p;
+ while (p < endp)
+ {
+ if (*p == LEADING_CODE_8_BIT_CONTROL)
+ *to++ = *(p + 1) - 0x20, p += 2;
+ else
+ *to++ = *p++;
+ }
+ return (to - str);
}
-DEFUN ("composite-char-component-count", Fcmpchar_cmp_count,
- Scmpchar_cmp_count, 1, 1, 0,
- "Return number of compoents of composite character CHARACTER.")
- (character)
- Lisp_Object character;
+\f
+DEFUN ("string", Fstring, Sstring, 0, MANY, 0,
+ doc: /* Concatenate all the argument characters and make the result a string.
+usage: (string &rest CHARACTERS) */)
+ (n, args)
+ int n;
+ Lisp_Object *args;
{
- int id;
-
- CHECK_NUMBER (character, 0);
- id = COMPOSITE_CHAR_ID (XINT (character));
- if (id < 0 || id >= n_cmpchars)
- error ("Invalid composite character: %d", XINT (character));
-
- return (make_number (cmpchar_table[id]->glyph_len));
-}
+ int i, bufsize;
+ unsigned char *buf, *p;
+ int c;
+ int multibyte = 0;
+ Lisp_Object ret;
+ USE_SAFE_ALLOCA;
-DEFUN ("compose-string", Fcompose_string, Scompose_string,
- 1, 1, 0,
- "Return one char string composed from all characters in STRING.")
- (str)
- Lisp_Object str;
-{
- unsigned char buf[MAX_LENGTH_OF_MULTI_BYTE_FORM], *p, *pend, *ptemp;
- int len, i;
+ bufsize = MAX_MULTIBYTE_LENGTH * n;
+ SAFE_ALLOCA (buf, unsigned char *, bufsize);
+ p = buf;
- CHECK_STRING (str, 0);
+ for (i = 0; i < n; i++)
+ {
+ CHECK_NUMBER (args[i]);
+ if (!multibyte && !SINGLE_BYTE_CHAR_P (XFASTINT (args[i])))
+ multibyte = 1;
+ }
- buf[0] = LEADING_CODE_COMPOSITION;
- p = XSTRING (str)->data;
- pend = p + STRING_BYTES (XSTRING (str));
- i = 1;
- while (p < pend)
+ for (i = 0; i < n; i++)
{
- if (*p < 0x20) /* control code */
- error ("Invalid component character: %d", *p);
- else if (*p < 0x80) /* ASCII */
- {
- if (i + 2 >= MAX_LENGTH_OF_MULTI_BYTE_FORM)
- error ("Too long string to be composed: %s", XSTRING (str)->data);
- /* Prepend an ASCII charset indicator 0xA0, set MSB of the
- code itself. */
- buf[i++] = 0xA0;
- buf[i++] = *p++ + 0x80;
- }
- else if (*p == LEADING_CODE_COMPOSITION) /* composite char */
- {
- /* Already composed. Eliminate the heading
- LEADING_CODE_COMPOSITION, keep the remaining bytes
- unchanged. */
- p++;
- if (*p == 255)
- error ("Can't compose a rule-based composition character");
- ptemp = p;
- while (! CHAR_HEAD_P (*p)) p++;
- if (str_cmpchar_id (ptemp - 1, p - ptemp + 1) < 0)
- error ("Can't compose an invalid composition character");
- if (i + (p - ptemp) >= MAX_LENGTH_OF_MULTI_BYTE_FORM)
- error ("Too long string to be composed: %s", XSTRING (str)->data);
- bcopy (ptemp, buf + i, p - ptemp);
- i += p - ptemp;
- }
- else /* multibyte char */
- {
- /* Add 0x20 to the base leading-code, keep the remaining
- bytes unchanged. */
- int c = STRING_CHAR_AND_CHAR_LENGTH (p, pend - p, len);
-
- if (len <= 1 || ! CHAR_VALID_P (c, 0))
- error ("Can't compose an invalid character");
- if (i + len >= MAX_LENGTH_OF_MULTI_BYTE_FORM)
- error ("Too long string to be composed: %s", XSTRING (str)->data);
- bcopy (p, buf + i, len);
- buf[i] += 0x20;
- p += len, i += len;
- }
+ c = XINT (args[i]);
+ if (multibyte)
+ p += CHAR_STRING (c, p);
+ else
+ *p++ = c;
}
- if (i < 5)
- /* STR contains only one character, which can't be composed. */
- error ("Too short string to be composed: %s", XSTRING (str)->data);
+ ret = make_string_from_bytes (buf, n, p - buf);
+ SAFE_FREE ();
- return make_string_from_bytes (buf, 1, i);
+ return ret;
}
+#endif /* emacs */
\f
int
charset_id_internal (charset_name)
}
DEFUN ("setup-special-charsets", Fsetup_special_charsets,
- Ssetup_special_charsets, 0, 0, 0, "Internal use only.")
- ()
+ Ssetup_special_charsets, 0, 0, 0, doc: /* Internal use only. */)
+ ()
{
charset_latin_iso8859_1 = charset_id_internal ("latin-iso8859-1");
charset_jisx0208_1978 = charset_id_internal ("japanese-jisx0208-1978");
charset_latin_jisx0201 = charset_id_internal ("latin-jisx0201");
charset_big5_1 = charset_id_internal ("chinese-big5-1");
charset_big5_2 = charset_id_internal ("chinese-big5-2");
+ charset_mule_unicode_0100_24ff
+ = charset_id_internal ("mule-unicode-0100-24ff");
+ charset_mule_unicode_2500_33ff
+ = charset_id_internal ("mule-unicode-2500-33ff");
+ charset_mule_unicode_e000_ffff
+ = charset_id_internal ("mule-unicode-e000-ffff");
return Qnil;
}
Fput (Qcharset_table, Qchar_table_extra_slots, make_number (0));
Vcharset_table = Fmake_char_table (Qcharset_table, Qnil);
- Vcharset_symbol_table = Fmake_vector (make_number (MAX_CHARSET + 1), Qnil);
+ Qunknown = intern ("unknown");
+ staticpro (&Qunknown);
+ Vcharset_symbol_table = Fmake_vector (make_number (MAX_CHARSET + 1),
+ Qunknown);
/* Setup tables. */
for (i = 0; i < 2; i++)
for (k = 0; k < 128; k++)
iso_charset_table [i][j][k] = -1;
- bzero (cmpchar_hash_table, sizeof cmpchar_hash_table);
- cmpchar_table_size = n_cmpchars = 0;
-
for (i = 0; i < 256; i++)
- BYTES_BY_CHAR_HEAD (i) = 1;
- for (i = MIN_CHARSET_OFFICIAL_DIMENSION1;
- i <= MAX_CHARSET_OFFICIAL_DIMENSION1; i++)
- BYTES_BY_CHAR_HEAD (i) = 2;
- for (i = MIN_CHARSET_OFFICIAL_DIMENSION2;
- i <= MAX_CHARSET_OFFICIAL_DIMENSION2; i++)
- BYTES_BY_CHAR_HEAD (i) = 3;
- BYTES_BY_CHAR_HEAD (LEADING_CODE_PRIVATE_11) = 3;
- BYTES_BY_CHAR_HEAD (LEADING_CODE_PRIVATE_12) = 3;
- BYTES_BY_CHAR_HEAD (LEADING_CODE_PRIVATE_21) = 4;
- BYTES_BY_CHAR_HEAD (LEADING_CODE_PRIVATE_22) = 4;
- /* The followings don't reflect the actual bytes, but just to tell
- that it is a start of a multibyte character. */
- BYTES_BY_CHAR_HEAD (LEADING_CODE_COMPOSITION) = 2;
- BYTES_BY_CHAR_HEAD (0x9E) = 2;
- BYTES_BY_CHAR_HEAD (0x9F) = 2;
+ bytes_by_char_head[i] = 1;
+ bytes_by_char_head[LEADING_CODE_PRIVATE_11] = 3;
+ bytes_by_char_head[LEADING_CODE_PRIVATE_12] = 3;
+ bytes_by_char_head[LEADING_CODE_PRIVATE_21] = 4;
+ bytes_by_char_head[LEADING_CODE_PRIVATE_22] = 4;
for (i = 0; i < 128; i++)
- WIDTH_BY_CHAR_HEAD (i) = 1;
+ width_by_char_head[i] = 1;
for (; i < 256; i++)
- WIDTH_BY_CHAR_HEAD (i) = 4;
- WIDTH_BY_CHAR_HEAD (LEADING_CODE_PRIVATE_11) = 1;
- WIDTH_BY_CHAR_HEAD (LEADING_CODE_PRIVATE_12) = 2;
- WIDTH_BY_CHAR_HEAD (LEADING_CODE_PRIVATE_21) = 1;
- WIDTH_BY_CHAR_HEAD (LEADING_CODE_PRIVATE_22) = 2;
+ width_by_char_head[i] = 4;
+ width_by_char_head[LEADING_CODE_PRIVATE_11] = 1;
+ width_by_char_head[LEADING_CODE_PRIVATE_12] = 2;
+ width_by_char_head[LEADING_CODE_PRIVATE_21] = 1;
+ width_by_char_head[LEADING_CODE_PRIVATE_22] = 2;
{
Lisp_Object val;
val = Fcons (make_number ((i - 0x70) << 7), val);
for (; i < 0xFF; i++)
val = Fcons (make_number ((i - 0xE0) << 14), val);
- val = Fcons (make_number (GENERIC_COMPOSITION_CHAR), val);
Vgeneric_character_list = Fnreverse (val);
}
void
syms_of_charset ()
{
+ Qcharset = intern ("charset");
+ staticpro (&Qcharset);
+
Qascii = intern ("ascii");
staticpro (&Qascii);
- Qcharset = intern ("charset");
- staticpro (&Qcharset);
+ Qeight_bit_control = intern ("eight-bit-control");
+ staticpro (&Qeight_bit_control);
+
+ Qeight_bit_graphic = intern ("eight-bit-graphic");
+ staticpro (&Qeight_bit_graphic);
- /* Define ASCII charset now. */
+ /* Define special charsets ascii, eight-bit-control, and
+ eight-bit-graphic. */
update_charset_table (make_number (CHARSET_ASCII),
make_number (1), make_number (94),
make_number (1),
make_number ('B'),
make_number (0),
build_string ("ASCII"),
- build_string ("ASCII"),
+ Qnil, /* same as above */
build_string ("ASCII (ISO646 IRV)"));
CHARSET_SYMBOL (CHARSET_ASCII) = Qascii;
Fput (Qascii, Qcharset, CHARSET_TABLE_ENTRY (CHARSET_ASCII));
- Qcomposition = intern ("composition");
- staticpro (&Qcomposition);
- CHARSET_SYMBOL (CHARSET_COMPOSITION) = Qcomposition;
+ update_charset_table (make_number (CHARSET_8_BIT_CONTROL),
+ make_number (1), make_number (96),
+ make_number (4),
+ make_number (0),
+ make_number (-1),
+ make_number (-1),
+ build_string ("8-bit control code (0x80..0x9F)"),
+ Qnil, /* same as above */
+ Qnil); /* same as above */
+ CHARSET_SYMBOL (CHARSET_8_BIT_CONTROL) = Qeight_bit_control;
+ Fput (Qeight_bit_control, Qcharset,
+ CHARSET_TABLE_ENTRY (CHARSET_8_BIT_CONTROL));
+
+ update_charset_table (make_number (CHARSET_8_BIT_GRAPHIC),
+ make_number (1), make_number (96),
+ make_number (4),
+ make_number (0),
+ make_number (-1),
+ make_number (-1),
+ build_string ("8-bit graphic char (0xA0..0xFF)"),
+ Qnil, /* same as above */
+ Qnil); /* same as above */
+ CHARSET_SYMBOL (CHARSET_8_BIT_GRAPHIC) = Qeight_bit_graphic;
+ Fput (Qeight_bit_graphic, Qcharset,
+ CHARSET_TABLE_ENTRY (CHARSET_8_BIT_GRAPHIC));
Qauto_fill_chars = intern ("auto-fill-chars");
staticpro (&Qauto_fill_chars);
defsubr (&Schar_width);
defsubr (&Sstring_width);
defsubr (&Schar_direction);
- defsubr (&Schars_in_region);
defsubr (&Sstring);
- defsubr (&Scmpcharp);
- defsubr (&Scmpchar_component);
- defsubr (&Scmpchar_cmp_rule);
- defsubr (&Scmpchar_cmp_rule_p);
- defsubr (&Scmpchar_cmp_count);
- defsubr (&Scompose_string);
defsubr (&Ssetup_special_charsets);
DEFVAR_LISP ("charset-list", &Vcharset_list,
- "List of charsets ever defined.");
- Vcharset_list = Fcons (Qascii, Qnil);
+ doc: /* List of charsets ever defined. */);
+ Vcharset_list = Fcons (Qascii, Fcons (Qeight_bit_control,
+ Fcons (Qeight_bit_graphic, Qnil)));
DEFVAR_LISP ("translation-table-vector", &Vtranslation_table_vector,
- "Vector of cons cell of a symbol and translation table ever defined.\n\
-An ID of a translation table is an index of this 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_INT ("leading-code-composition", &leading_code_composition,
- "Leading-code of composite characters.");
- leading_code_composition = LEADING_CODE_COMPOSITION;
-
DEFVAR_INT ("leading-code-private-11", &leading_code_private_11,
- "Leading-code of private TYPE9N charset of column-width 1.");
+ doc: /* Leading-code of private TYPE9N charset of column-width 1. */);
leading_code_private_11 = LEADING_CODE_PRIVATE_11;
DEFVAR_INT ("leading-code-private-12", &leading_code_private_12,
- "Leading-code of private TYPE9N charset of column-width 2.");
+ doc: /* Leading-code of private TYPE9N charset of column-width 2. */);
leading_code_private_12 = LEADING_CODE_PRIVATE_12;
DEFVAR_INT ("leading-code-private-21", &leading_code_private_21,
- "Leading-code of private TYPE9Nx9N charset of column-width 1.");
+ doc: /* Leading-code of private TYPE9Nx9N charset of column-width 1. */);
leading_code_private_21 = LEADING_CODE_PRIVATE_21;
DEFVAR_INT ("leading-code-private-22", &leading_code_private_22,
- "Leading-code of private TYPE9Nx9N charset of column-width 2.");
+ doc: /* Leading-code of private TYPE9Nx9N charset of column-width 2. */);
leading_code_private_22 = LEADING_CODE_PRIVATE_22;
DEFVAR_INT ("nonascii-insert-offset", &nonascii_insert_offset,
- "Offset for converting non-ASCII unibyte codes 0240...0377 to multibyte.\n\
-This is used for converting unibyte text to multibyte,\n\
-and for inserting character codes specified by number.\n\n\
-This serves to convert a Latin-1 or similar 8-bit character code\n\
-to the corresponding Emacs multibyte character code.\n\
-Typically the value should be (- (make-char CHARSET 0) 128),\n\
-for your choice of character set.\n\
-If `nonascii-translation-table' is non-nil, it overrides this variable.");
+ doc: /* Offset for converting non-ASCII unibyte codes 0240...0377 to multibyte.
+This is used for converting unibyte text to multibyte,
+and for inserting character codes specified by number.
+
+This serves to convert a Latin-1 or similar 8-bit character code
+to the corresponding Emacs multibyte character code.
+Typically the value should be (- (make-char CHARSET 0) 128),
+for your choice of character set.
+If `nonascii-translation-table' is non-nil, it overrides this variable. */);
nonascii_insert_offset = 0;
DEFVAR_LISP ("nonascii-translation-table", &Vnonascii_translation_table,
- "Translation table to convert non-ASCII unibyte codes to multibyte.\n\
-This is used for converting unibyte text to multibyte,\n\
-and for inserting character codes specified by number.\n\n\
-Conversion is performed only when multibyte characters are enabled,\n\
-and it serves to convert a Latin-1 or similar 8-bit character code\n\
-to the corresponding Emacs character code.\n\n\
-If this is nil, `nonascii-insert-offset' is used instead.\n\
-See also the docstring of `make-translation-table'.");
- Vnonascii_translation_table = Qnil;
+ doc: /* Translation table to convert non-ASCII unibyte codes to multibyte.
+This is used for converting unibyte text to multibyte,
+and for inserting character codes specified by number.
- DEFVAR_INT ("min-composite-char", &min_composite_char,
- "Minimum character code of a composite character.");
- min_composite_char = MIN_CHAR_COMPOSITION;
+Conversion is performed only when multibyte characters are enabled,
+and it serves to convert a Latin-1 or similar 8-bit character code
+to the corresponding Emacs character code.
+
+If this is nil, `nonascii-insert-offset' is used instead.
+See also the docstring of `make-translation-table'. */);
+ Vnonascii_translation_table = Qnil;
DEFVAR_LISP ("auto-fill-chars", &Vauto_fill_chars,
- "A char-table for characters which invoke auto-filling.\n\
-Such characters has value t in this table.");
+ 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);
}
#endif /* emacs */
+
+/* arch-tag: 66a89b8d-4c28-47d3-9ca1-56f78440d69f
+ (do not change this comment) */
HCoop / bpt / emacs.git / blobdiff