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(QCmnemonic, QCdefalut_char)

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(QCdecode_translation_table, QCencode_translation_table)
(QCpost_read_conversion, QCpre_write_conversion): New variables.
(get_translation_table): Return a list of translation tables if
necessary.
(decode_coding): Call get_translation_table with ENCODEP 0.
(char_encodable_p): If translation_table is non-nil, always call
translate_char.
(Fdefine_coding_system_internal): Accept list of translation
tables as :encode-translation-table and :decode-translation-table.
(Fcoding_system_put): New function.
(syms_of_coding): Declare new symbols.  Defsubr
Scoding_system_put.
This commit is contained in:
Kenichi Handa 2004-01-27 02:21:37 +00:00
parent 111daccfb5
commit a6f87d34c8
1 changed files with 89 additions and 12 deletions
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101
src/coding.c
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@ -311,7 +311,9 @@ Lisp_Object Qcharset, Qiso_2022, Qutf_8, Qutf_16, Qshift_jis, Qbig5;
Lisp_Object Qbig, Qlittle;
Lisp_Object Qcoding_system_history;
Lisp_Object Qvalid_codes;
Lisp_Object QCcategory;
Lisp_Object QCcategory, QCmnemonic, QCdefalut_char;
Lisp_Object QCdecode_translation_table, QCencode_translation_table;
Lisp_Object QCpost_read_conversion, QCpre_write_conversion;
extern Lisp_Object Qinsert_file_contents, Qwrite_region;
Lisp_Object Qcall_process, Qcall_process_region, Qprocess_argument;
@ -5484,8 +5486,9 @@ decode_eol (coding)
}
/* Return a translation table from coding system attribute vector ATTRS
for encoding (ENCODEP is nonzero) or decoding (ENCODEP is zeor). */
/* Return a translation table (or list of them) from coding system
attribute vector ATTRS for encoding (ENCODEP is nonzero) or
decoding (ENCODEP is zero). */
static INLINE
get_translation_table (attrs, encodep)
@ -5498,12 +5501,26 @@ get_translation_table (attrs, encodep)
else
translation_table = CODING_ATTR_DECODE_TBL (attrs),
standard = Vstandard_translation_table_for_decode;
if (! NILP (translation_table) && SYMBOLP (translation_table))
translation_table = Fget (translation_table, Qtranslation_table);
if (NILP (translation_table))
translation_table = standard;
if (! CHAR_TABLE_P (translation_table))
translation_table = Qnil;
return standard;
if (SYMBOLP (translation_table))
translation_table = Fget (translation_table, Qtranslation_table);
else if (CONSP (translation_table))
{
Lisp_Object val;
translation_table = Fcopy_sequence (translation_table);
for (val = translation_table; CONSP (val); val = XCDR (val))
if (SYMBOLP (XCAR (val)))
XSETCAR (val, Fget (XCAR (val), Qtranslation_table));
}
if (! NILP (standard))
{
if (CONSP (translation_table))
translation_table = nconc2 (translation_table, Fcons (standard, Qnil));
else
translation_table = Fcons (translation_table, Fcons (standard, Qnil));
}
return translation_table;
}
@ -5892,7 +5909,7 @@ decode_coding (coding)
ALLOC_CONVERSION_WORK_AREA (coding);
attrs = CODING_ID_ATTRS (coding->id);
translation_table = get_translation_table (attrs, 1);
translation_table = get_translation_table (attrs, 0);
do
{
@ -7099,7 +7116,7 @@ char_encodable_p (c, attrs)
Lisp_Object translation_table;
translation_table = CODING_ATTR_TRANS_TBL (attrs);
if (CHAR_TABLE_P (translation_table))
if (! NILP (translation_table))
c = translate_char (translation_table, c);
for (tail = CODING_ATTR_CHARSET_LIST (attrs);
CONSP (tail); tail = XCDR (tail))
@ -8166,12 +8183,12 @@ usage: (define-coding-system-internal ...) */)
CODING_ATTR_ASCII_COMPAT (attrs) = args[coding_arg_ascii_compatible_p];
val = args[coding_arg_decode_translation_table];
if (! CHAR_TABLE_P (val))
if (! CHAR_TABLE_P (val) && ! CONSP (val))
CHECK_SYMBOL (val);
CODING_ATTR_DECODE_TBL (attrs) = val;
val = args[coding_arg_encode_translation_table];
if (! CHAR_TABLE_P (val))
if (! CHAR_TABLE_P (val) && ! CONSP (val))
CHECK_SYMBOL (val);
CODING_ATTR_ENCODE_TBL (attrs) = val;
@ -8581,6 +8598,59 @@ usage: (define-coding-system-internal ...) */)
}
DEFUN ("coding-system-put", Fcoding_system_put, Scoding_system_put,
3, 3, 0,
doc: /* Change value in CODING-SYSTEM's property list PROP to VAL. */)
(coding_system, prop, val)
Lisp_Object coding_system, prop, val;
{
Lisp_Object spec, attrs, plist;
CHECK_CODING_SYSTEM_GET_SPEC (coding_system, spec);
attrs = AREF (spec, 0);
if (EQ (prop, QCmnemonic))
{
if (! STRINGP (val))
CHECK_CHARACTER (val);
CODING_ATTR_MNEMONIC (attrs) = val;
}
else if (EQ (prop, QCdefalut_char))
{
if (NILP (val))
val = make_number (' ');
else
CHECK_CHARACTER (val);
CODING_ATTR_DEFAULT_CHAR (attrs) = val;
}
else if (EQ (prop, QCdecode_translation_table))
{
if (! CHAR_TABLE_P (val) && ! CONSP (val))
CHECK_SYMBOL (val);
CODING_ATTR_DECODE_TBL (attrs) = val;
}
else if (EQ (prop, QCencode_translation_table))
{
if (! CHAR_TABLE_P (val) && ! CONSP (val))
CHECK_SYMBOL (val);
CODING_ATTR_ENCODE_TBL (attrs) = val;
}
else if (EQ (prop, QCpost_read_conversion))
{
CHECK_SYMBOL (val);
CODING_ATTR_POST_READ (attrs) = val;
}
else if (EQ (prop, QCpre_write_conversion))
{
CHECK_SYMBOL (val);
CODING_ATTR_PRE_WRITE (attrs) = val;
}
CODING_ATTR_PLIST (attrs)
= Fplist_put (CODING_ATTR_PLIST (attrs), prop, val);
return val;
}
DEFUN ("define-coding-system-alias", Fdefine_coding_system_alias,
Sdefine_coding_system_alias, 2, 2, 0,
doc: /* Define ALIAS as an alias for CODING-SYSTEM. */)
@ -8843,6 +8913,12 @@ syms_of_coding ()
DEFSYM (Qemacs_mule, "emacs-mule");
DEFSYM (QCcategory, ":category");
DEFSYM (QCmnemonic, ":mnemonic");
DEFSYM (QCdefalut_char, ":default-char");
DEFSYM (QCdecode_translation_table, ":decode-translation-table");
DEFSYM (QCencode_translation_table, ":encode-translation-table");
DEFSYM (QCpost_read_conversion, ":post-read-conversion");
DEFSYM (QCpre_write_conversion, ":pre-write-conversion");
Vcoding_category_table
= Fmake_vector (make_number (coding_category_max), Qnil);
@ -8920,6 +8996,7 @@ syms_of_coding ()
defsubr (&Sset_coding_system_priority);
defsubr (&Sdefine_coding_system_internal);
defsubr (&Sdefine_coding_system_alias);
defsubr (&Scoding_system_put);
defsubr (&Scoding_system_base);
defsubr (&Scoding_system_plist);
defsubr (&Scoding_system_aliases);