-/* Header for coding system handler.
- Copyright (C) 1995, 1997 Electrotechnical Laboratory, JAPAN.
- Licensed to the Free Software Foundation.
-
-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 _CODING_H
-#define _CODING_H
-
-#ifndef _CCL_H
-#include "../src/ccl.h"
-#endif
-
-/*** EMACS' INTERNAL FORMAT (emacs-mule) section ***/
-
-/* All code (1-byte) of Emacs' internal format is classified into one
- of the followings. See also `charset.h'. */
-enum emacs_code_class_type
- {
- EMACS_control_code, /* Control codes in the range
- 0x00..0x1F and 0x7F except for the
- following two codes. */
- EMACS_linefeed_code, /* 0x0A (linefeed) to denote
- end-of-line. */
- EMACS_carriage_return_code, /* 0x0D (carriage-return) to be used
- in selective display mode. */
- EMACS_ascii_code, /* ASCII characters. */
- EMACS_leading_code_composition, /* Leading code of a composite
- character. */
- EMACS_leading_code_2, /* Base leading code of official
- TYPE9N character. */
- EMACS_leading_code_3, /* Base leading code of private TYPE9N
- or official TYPE9Nx9N character. */
- EMACS_leading_code_4, /* Base leading code of private
- TYPE9Nx9N character. */
- EMACS_invalid_code /* Invalid code, i.e. a base leading
- code not yet assigned to any
- charset, or a code of the range
- 0xA0..0xFF. */
- };
-
-extern enum emacs_code_class_type emacs_code_class[256];
-
-/*** ISO2022 section ***/
-
-/* Macros to define code of control characters for ISO2022's functions. */
- /* code */ /* function */
-#define ISO_CODE_LF 0x0A /* line-feed */
-#define ISO_CODE_CR 0x0D /* carriage-return */
-#define ISO_CODE_SO 0x0E /* shift-out */
-#define ISO_CODE_SI 0x0F /* shift-in */
-#define ISO_CODE_SS2_7 0x19 /* single-shift-2 for 7-bit code */
-#define ISO_CODE_ESC 0x1B /* escape */
-#define ISO_CODE_SS2 0x8E /* single-shift-2 */
-#define ISO_CODE_SS3 0x8F /* single-shift-3 */
-#define ISO_CODE_CSI 0x9B /* control-sequence-introduce */
-
-/* All code (1-byte) of ISO2022 is classified into one of the
- followings. */
-enum iso_code_class_type
- {
- ISO_control_code, /* Control codes in the range
- 0x00..0x1F, 0x7F, and 0x80..0x9F,
- except for the following seven
- codes. */
- ISO_carriage_return, /* ISO_CODE_CR (0x0D) */
- ISO_shift_out, /* ISO_CODE_SO (0x0E) */
- ISO_shift_in, /* ISO_CODE_SI (0x0F) */
- ISO_single_shift_2_7, /* ISO_CODE_SS2_7 (0x19) */
- ISO_escape, /* ISO_CODE_SO (0x1B) */
- ISO_single_shift_2, /* ISO_CODE_SS2 (0x8E) */
- ISO_single_shift_3, /* ISO_CODE_SS3 (0x8F) */
- ISO_control_sequence_introducer, /* ISO_CODE_CSI (0x9B) */
- ISO_0x20_or_0x7F, /* Codes of the values 0x20 or 0x7F. */
- ISO_graphic_plane_0, /* Graphic codes in the range 0x21..0x7E. */
- ISO_0xA0_or_0xFF, /* Codes of the values 0xA0 or 0xFF. */
- ISO_graphic_plane_1 /* Graphic codes in the range 0xA1..0xFE. */
- };
-
-/** The macros CODING_FLAG_ISO_XXX defines a flag bit of the `flags'
- element in the structure `coding_system'. This information is used
- while encoding a text to ISO2022. **/
-
-/* If set, produce short-form designation sequence (e.g. ESC $ A)
- instead of long-form sequence (e.g. ESC $ ( A). */
-#define CODING_FLAG_ISO_SHORT_FORM 0x0001
-
-/* If set, reset graphic planes and registers at end-of-line to the
- initial state. */
-#define CODING_FLAG_ISO_RESET_AT_EOL 0x0002
-
-/* If set, reset graphic planes and registers before any control
- characters to the initial state. */
-#define CODING_FLAG_ISO_RESET_AT_CNTL 0x0004
-
-/* If set, encode by 7-bit environment. */
-#define CODING_FLAG_ISO_SEVEN_BITS 0x0008
-
-/* If set, use locking-shift function. */
-#define CODING_FLAG_ISO_LOCKING_SHIFT 0x0010
-
-/* If set, use single-shift function. Overwrite
- CODING_FLAG_ISO_LOCKING_SHIFT. */
-#define CODING_FLAG_ISO_SINGLE_SHIFT 0x0020
-
-/* If set, designate JISX0201-Roman instead of ASCII. */
-#define CODING_FLAG_ISO_USE_ROMAN 0x0040
-
-/* If set, designate JISX0208-1978 instead of JISX0208-1983. */
-#define CODING_FLAG_ISO_USE_OLDJIS 0x0080
-
-/* If set, do not produce ISO6429's direction specifying sequence. */
-#define CODING_FLAG_ISO_NO_DIRECTION 0x0100
-
-/* If set, assume designation states are reset at beginning of line on
- output. */
-#define CODING_FLAG_ISO_INIT_AT_BOL 0x0200
-
-/* If set, designation sequence should be placed at beginning of line
- on output. */
-#define CODING_FLAG_ISO_DESIGNATE_AT_BOL 0x0400
-
-/* If set, do not encode unexpected charactes on output. */
-#define CODING_FLAG_ISO_SAFE 0x0800
-
-/* A character to be produced on output if encoding of the original
- character is prohibited by CODING_FLAG_ISO_SAFE. */
-#define CODING_INHIBIT_CHARACTER_SUBSTITUTION 077 /* `?' */
-
-/* Structure of the field `spec.iso2022' in the structure `coding_system'. */
-struct iso2022_spec
-{
- /* The current graphic register invoked to each graphic plane. */
- int current_invocation[2];
-
- /* The current charset designated to each graphic register. */
- int current_designation[4];
-
- /* A charset initially designated to each graphic register. */
- int initial_designation[4];
-
- /* A graphic register to which each charset should be designated. */
- unsigned char requested_designation[MAX_CHARSET + 1];
-
- /* Table of expected character sets for this coding system. If the
- Nth element is 0, the charset of ID N is not an expected
- character set. Such a character set is not encoded when
- CODING_ISO_FLAG_SAFE is set. */
- unsigned char expected_charsets[MAX_CHARSET + 1];
-
- /* Set to 1 temporarily only when graphic register 2 or 3 is invoked
- by single-shift while encoding. */
- int single_shifting;
-
- /* Set to 1 temporarily only when processing at beginning of line. */
- int bol;
-};
-
-/* Macros to access each field in the structure `spec.iso2022'. */
-#define CODING_SPEC_ISO_INVOCATION(coding, plane) \
- coding->spec.iso2022.current_invocation[plane]
-#define CODING_SPEC_ISO_DESIGNATION(coding, reg) \
- coding->spec.iso2022.current_designation[reg]
-#define CODING_SPEC_ISO_INITIAL_DESIGNATION(coding, reg) \
- coding->spec.iso2022.initial_designation[reg]
-#define CODING_SPEC_ISO_REQUESTED_DESIGNATION(coding, charset) \
- coding->spec.iso2022.requested_designation[charset]
-#define CODING_SPEC_ISO_EXPECTED_CHARSETS(coding) \
- coding->spec.iso2022.expected_charsets
-#define CODING_SPEC_ISO_SINGLE_SHIFTING(coding) \
- coding->spec.iso2022.single_shifting
-#define CODING_SPEC_ISO_BOL(coding) \
- coding->spec.iso2022.bol
-
-/* A value which may appear in
- coding->spec.iso2022.requested_designation indicating that the
- corresponding charset does not request any graphic register to be
- designated. */
-#define CODING_SPEC_ISO_NO_REQUESTED_DESIGNATION 4
-
-/* Return a charset which is currently designated to the graphic plane
- PLANE in the coding-system CODING. */
-#define CODING_SPEC_ISO_PLANE_CHARSET(coding, plane) \
- ((CODING_SPEC_ISO_INVOCATION (coding, plane) < 0) \
- ? -1 \
- : CODING_SPEC_ISO_DESIGNATION (coding, \
- CODING_SPEC_ISO_INVOCATION (coding, plane)))
-
-/*** BIG5 section ***/
-
-/* Macros to denote each type of BIG5 coding system. */
-#define CODING_FLAG_BIG5_HKU 0x00 /* BIG5-HKU is one of variants of
- BIG5 developed by Hong Kong
- University. */
-#define CODING_FLAG_BIG5_ETEN 0x01 /* BIG5_ETen is one of variants
- of BIG5 developed by the
- company ETen in Taiwan. */
-
-/*** GENERAL section ***/
-
-/* Types of coding system. */
-enum coding_type
- {
- coding_type_no_conversion, /* A coding system which requires no
- conversion for reading and writing
- including end-of-line format. */
- coding_type_emacs_mule, /* A coding system used in Emacs'
- buffer and string. Requires no
- conversion for reading and writing
- except for end-of-line format. */
- coding_type_undecided, /* A coding system which requires
- automatic detection of a real
- coding system. */
- coding_type_sjis, /* SJIS coding system for Japanese. */
- coding_type_iso2022, /* Any coding system of ISO2022
- variants. */
- coding_type_big5, /* BIG5 coding system for Chinese. */
- coding_type_ccl /* The coding system of which decoder
- and encoder are written in CCL. */
- };
-
-/* Formats of end-of-line. */
-#define CODING_EOL_LF 0 /* Line-feed only, same as Emacs'
- internal format. */
-#define CODING_EOL_CRLF 1 /* Sequence of carriage-return and
- line-feed. */
-#define CODING_EOL_CR 2 /* Carriage-return only. */
-#define CODING_EOL_UNDECIDED 3 /* This value is used to denote the
- eol-type is not yet decided. */
-
-/* Character composition status while encoding/decoding. */
-#define COMPOSING_NO 0 /* not composing */
-#define COMPOSING_WITH_RULE_HEAD 1 /* 1st char of with-rule composing follow */
-#define COMPOSING_NO_RULE_HEAD 2 /* 1st char of no-rule composing follow */
-#define COMPOSING_WITH_RULE_TAIL 3 /* Nth char of with-rule composing follow */
-#define COMPOSING_NO_RULE_TAIL 4 /* Nth char of no-rule composing follow */
-#define COMPOSING_WITH_RULE_RULE 5 /* composition rule follow */
-
-/* 1 iff composing. */
-#define COMPOSING_P(composing) (composing)
-/* 1 iff 1st char of composing element follows. */
-#define COMPOSING_HEAD_P(composing) \
- ((composing) && (composing) <= COMPOSING_NO_RULE_HEAD)
-/* 1 iff composing with embeded composition rule. */
-#define COMPOSING_WITH_RULE_P(composing) ((composing) & 1)
-
-struct coding_system
-{
- /* Type of the coding system. */
- enum coding_type type;
-
- /* If the coding system requires specific code to be attached at the
- tail of converted text, this value should be set to `1'. */
- int require_flushing;
-
- /* Flag bits of the coding system. The meaning of each bit depends
- on the type of the coding system. */
- unsigned int flags;
-
- /* Type of end-of-line format (LF, CRLF, or CR) of the coding system. */
- int eol_type;
-
- /* Non-zero means that the current source text is the last block of the
- whole text to be converted. */
- int last_block;
-
- /* Non-zero means that characters are being composed currently while
- decoding or encoding. See macros COMPOSING_XXXX above for the
- meaing of each non-zero value. */
- int composing;
-
- /* 0 (left-to-right) or 1 (right-to-left): the direction of the text
- being processed currently. */
- int direction;
-
- /* Non-zero means that the current source text is in a buffer which
- enables selective display. */
- int selective;
-
- /* Detailed information specific to each type of coding system. */
- union spec
- {
- struct iso2022_spec iso2022;
- struct ccl_spec ccl; /* Defined in ccl.h. */
- } spec;
-
- /* Backward pointer to the Lisp symbol of the coding system. */
- Lisp_Object symbol;
-
- /* Lisp function (symbol) to be called after decoding to do
- additional conversion. */
- Lisp_Object post_read_conversion;
-
- /* Lisp function (symbol) to be called before encoding to do
- additional conversion. */
- Lisp_Object pre_write_conversion;
-
- /* Character unification tables to look up, or nil. */
- Lisp_Object character_unification_table_for_decode;
- Lisp_Object character_unification_table_for_encode;
-
- /* Carryover yielded by decoding/encoding incomplete source. No
- coding-system yields more than 7-byte of carryover. This does
- not include a text which is not processed because of short of
- output buffer. */
- char carryover[8];
-
- /* Actual data length in the above array. */
- int carryover_size;
-};
-
-/* Return 1 if coding system CODING never requires any code conversion. */
-#define CODING_REQUIRE_NO_CONVERSION(coding) \
- (((coding)->type == coding_type_no_conversion \
- || (coding)->type == coding_type_emacs_mule) \
- && (coding)->eol_type == CODING_EOL_LF)
-
-/* Return 1 if coding system CODING may not require code conversion. */
-#define CODING_MAY_REQUIRE_NO_CONVERSION(coding) \
- (((coding)->type == coding_type_no_conversion \
- || (coding)->type == coding_type_emacs_mule \
- || (coding)->type == coding_type_undecided) \
- && ((coding)->eol_type == CODING_EOL_LF \
- || (coding)->eol_type == CODING_EOL_UNDECIDED))
-
-/* Index for each coding category in `coding_category_table' */
-#define CODING_CATEGORY_IDX_EMACS_MULE 0
-#define CODING_CATEGORY_IDX_SJIS 1
-#define CODING_CATEGORY_IDX_ISO_7 2
-#define CODING_CATEGORY_IDX_ISO_8_1 3
-#define CODING_CATEGORY_IDX_ISO_8_2 4
-#define CODING_CATEGORY_IDX_ISO_7_ELSE 5
-#define CODING_CATEGORY_IDX_ISO_8_ELSE 6
-#define CODING_CATEGORY_IDX_BIG5 7
-#define CODING_CATEGORY_IDX_BINARY 8
-#define CODING_CATEGORY_IDX_MAX 9
-
-/* Definitions of flag bits returned by the function
- detect_coding_mask (). */
-#define CODING_CATEGORY_MASK_EMACS_MULE (1 << CODING_CATEGORY_IDX_EMACS_MULE)
-#define CODING_CATEGORY_MASK_SJIS (1 << CODING_CATEGORY_IDX_SJIS)
-#define CODING_CATEGORY_MASK_ISO_7 (1 << CODING_CATEGORY_IDX_ISO_7)
-#define CODING_CATEGORY_MASK_ISO_8_1 (1 << CODING_CATEGORY_IDX_ISO_8_1)
-#define CODING_CATEGORY_MASK_ISO_8_2 (1 << CODING_CATEGORY_IDX_ISO_8_2)
-#define CODING_CATEGORY_MASK_ISO_7_ELSE (1 << CODING_CATEGORY_IDX_ISO_7_ELSE)
-#define CODING_CATEGORY_MASK_ISO_8_ELSE (1 << CODING_CATEGORY_IDX_ISO_8_ELSE)
-#define CODING_CATEGORY_MASK_BIG5 (1 << CODING_CATEGORY_IDX_BIG5)
-#define CODING_CATEGORY_MASK_BINARY (1 << CODING_CATEGORY_IDX_BINARY)
-
-/* This value is returned if detect_coding_mask () find nothing other
- than ASCII characters. */
-#define CODING_CATEGORY_MASK_ANY \
- ( CODING_CATEGORY_MASK_EMACS_MULE \
- | CODING_CATEGORY_MASK_SJIS \
- | CODING_CATEGORY_MASK_ISO_7 \
- | CODING_CATEGORY_MASK_ISO_8_1 \
- | CODING_CATEGORY_MASK_ISO_8_2 \
- | CODING_CATEGORY_MASK_ISO_7_ELSE \
- | CODING_CATEGORY_MASK_ISO_8_ELSE \
- | CODING_CATEGORY_MASK_BIG5)
-
-/* Macros to decode or encode a character of JISX0208 in SJIS. S1 and
- S2 are the 1st and 2nd position-codes of JISX0208 in SJIS coding
- system. C1 and C2 are the 1st and 2nd position codes of Emacs'
- internal format. */
-
-#define DECODE_SJIS(s1, s2, c1, c2) \
- do { \
- if (s2 >= 0x9F) \
- c1 = s1 * 2 - (s1 >= 0xE0 ? 0x160 : 0xE0), \
- c2 = s2 - 0x7E; \
- else \
- c1 = s1 * 2 - ((s1 >= 0xE0) ? 0x161 : 0xE1), \
- c2 = s2 - ((s2 >= 0x7F) ? 0x20 : 0x1F); \
- } while (0)
-
-#define ENCODE_SJIS(c1, c2, s1, s2) \
- do { \
- if (c1 & 1) \
- s1 = c1 / 2 + ((c1 < 0x5F) ? 0x71 : 0xB1), \
- s2 = c2 + ((c2 >= 0x60) ? 0x20 : 0x1F); \
- else \
- s1 = c1 / 2 + ((c1 < 0x5F) ? 0x70 : 0xB0), \
- s2 = c2 + 0x7E; \
- } while (0)
-
-/* Extern declarations. */
-extern int decode_coding (), encode_coding ();
-extern int decoding_buffer_size (), encoding_buffer_size ();
-extern int conversion_buffer_size;
-extern char *conversion_buffer, *get_conversion_buffer ();
-extern Lisp_Object Fcheck_coding_system ();
-extern Lisp_Object Qcoding_system, Qeol_type, Qcoding_category_index;
-extern Lisp_Object Qemacs_mule;
-extern Lisp_Object Qbuffer_file_coding_system;
-extern Lisp_Object Vcoding_category_list;
-
-/* Mnemonic character to indicate each type of end-of-line. */
-extern int eol_mnemonic_unix, eol_mnemonic_dos, eol_mnemonic_mac;
-/* Mnemonic character to indicate type of end-of-line is not yet decided. */
-extern int eol_mnemonic_undecided;
-
-/* Table of coding-systems currently assigned to each coding-category. */
-extern Lisp_Object coding_category_table[CODING_CATEGORY_IDX_MAX];
-/* Table of names of symbol for each coding-category. */
-extern char *coding_category_name[CODING_CATEGORY_IDX_MAX];
-
-#ifdef emacs
-extern Lisp_Object Qfile_coding_system;
-extern Lisp_Object Qcall_process, Qcall_process_region, Qprocess_argument;
-extern Lisp_Object Qstart_process, Qopen_network_stream;
-
-/* Coding-system for reading files and receiving data from process. */
-extern Lisp_Object Vcoding_system_for_read;
-/* Coding-system for writing files and sending data to process. */
-extern Lisp_Object Vcoding_system_for_write;
-/* Coding-system actually used in the latest I/O. */
-extern Lisp_Object Vlast_coding_system_used;
-
-/* Coding-system to be used for encoding terminal output. This
- structure contains information of a coding-system specified by the
- function `set-terminal-coding-system'. */
-extern struct coding_system terminal_coding;
-
-/* Coding system to be used to encode text for terminal display when
- terminal coding system is nil. */
-extern struct coding_system safe_terminal_coding;
-
-/* Coding-system of what is sent from terminal keyboard. This
- structure contains information of a coding-system specified by the
- function `set-keyboard-coding-system'. */
-extern struct coding_system keyboard_coding;
-
-/* Default coding systems used for process I/O. */
-extern Lisp_Object Vdefault_process_coding_system;
-
-#endif
-
-#endif /* _CODING_H */
+/* Header for coding system handler.
+ Copyright (C) 1995, 1997 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_CODING_H
+#define EMACS_CODING_H
+
+/* Index to arguments of Fdefine_coding_system_internal. */
+
+enum define_coding_system_arg_index
+ {
+ coding_arg_name,
+ coding_arg_mnemonic,
+ coding_arg_coding_type,
+ coding_arg_charset_list,
+ coding_arg_ascii_compatible_p,
+ coding_arg_decode_translation_table,
+ coding_arg_encode_translation_table,
+ coding_arg_post_read_conversion,
+ coding_arg_pre_write_conversion,
+ coding_arg_default_char,
+ coding_arg_plist,
+ coding_arg_eol_type,
+ coding_arg_max
+ };
+
+enum define_coding_iso2022_arg_index
+ {
+ coding_arg_iso2022_initial = coding_arg_max,
+ coding_arg_iso2022_reg_usage,
+ coding_arg_iso2022_request,
+ coding_arg_iso2022_flags,
+ coding_arg_iso2022_max
+ };
+
+enum define_coding_utf16_arg_index
+ {
+ coding_arg_utf16_bom = coding_arg_max,
+ coding_arg_utf16_endian,
+ coding_arg_utf16_max
+ };
+
+enum define_coding_ccl_arg_index
+ {
+ coding_arg_ccl_decoder = coding_arg_max,
+ coding_arg_ccl_encoder,
+ coding_arg_ccl_valids,
+ coding_arg_ccl_max
+ };
+
+extern Lisp_Object Vcoding_system_hash_table;
+
+/* Enumeration of coding system type. */
+
+enum coding_system_type
+ {
+ coding_type_charset,
+ coding_type_utf_8,
+ coding_type_utf_16,
+ coding_type_iso_2022,
+ coding_type_emacs_mule,
+ coding_type_sjis,
+ coding_type_ccl,
+ coding_type_raw_text,
+ coding_type_undecided,
+ coding_type_max
+ };
+
+
+/* Enumeration of end-of-line format type. */
+
+enum end_of_line_type
+ {
+ eol_lf, /* Line-feed only, same as Emacs' internal
+ format. */
+ eol_crlf, /* Sequence of carriage-return and
+ line-feed. */
+ eol_cr, /* Carriage-return only. */
+ eol_any, /* Accept any of above. Produce line-feed
+ only. */
+ eol_undecided, /* This value is used to denote that the
+ eol-type is not yet undecided. */
+ eol_type_max
+ };
+
+/* Enumeration of index to an attribute vector of a coding system. */
+
+enum coding_attr_index
+ {
+ coding_attr_base_name,
+ coding_attr_docstring,
+ coding_attr_mnemonic,
+ coding_attr_type,
+ coding_attr_charset_list,
+ coding_attr_ascii_compat,
+ coding_attr_decode_tbl,
+ coding_attr_encode_tbl,
+ coding_attr_post_read,
+ coding_attr_pre_write,
+ coding_attr_default_char,
+ coding_attr_plist,
+
+ coding_attr_category,
+ coding_attr_safe_charsets,
+
+ /* The followings are extra attributes for each type. */
+ coding_attr_charset_valids,
+
+ coding_attr_ccl_decoder,
+ coding_attr_ccl_encoder,
+ coding_attr_ccl_valids,
+
+ coding_attr_iso_initial,
+ coding_attr_iso_usage,
+ coding_attr_iso_request,
+ coding_attr_iso_flags,
+
+ coding_attr_utf_16_bom,
+ coding_attr_utf_16_endian,
+
+ coding_attr_emacs_mule_full,
+
+ coding_attr_last_index
+ };
+
+
+#define CODING_ATTR_BASE_NAME(attrs) AREF (attrs, coding_attr_base_name)
+#define CODING_ATTR_TYPE(attrs) AREF (attrs, coding_attr_type)
+#define CODING_ATTR_CHARSET_LIST(attrs) AREF (attrs, coding_attr_charset_list)
+#define CODING_ATTR_MNEMONIC(attrs) AREF (attrs, coding_attr_mnemonic)
+#define CODING_ATTR_DOCSTRING(attrs) AREF (attrs, coding_attr_docstring)
+#define CODING_ATTR_ASCII_COMPAT(attrs) AREF (attrs, coding_attr_ascii_compat)
+#define CODING_ATTR_DECODE_TBL(attrs) AREF (attrs, coding_attr_decode_tbl)
+#define CODING_ATTR_ENCODE_TBL(attrs) AREF (attrs, coding_attr_encode_tbl)
+#define CODING_ATTR_POST_READ(attrs) AREF (attrs, coding_attr_post_read)
+#define CODING_ATTR_PRE_WRITE(attrs) AREF (attrs, coding_attr_pre_write)
+#define CODING_ATTR_DEFAULT_CHAR(attrs) AREF (attrs, coding_attr_default_char)
+#define CODING_ATTR_DIRECTION(attrs) AREF (attrs, coding_attr_direction)
+#define CODING_ATTR_FLUSHING(attrs) AREF (attrs, coding_attr_flushing)
+#define CODING_ATTR_PLIST(attrs) AREF (attrs, coding_attr_plist)
+#define CODING_ATTR_CATEGORY(attrs) AREF (attrs, coding_attr_category)
+#define CODING_ATTR_SAFE_CHARSETS(attrs)AREF (attrs, coding_attr_safe_charsets)
+
+
+#define CODING_ID_ATTRS(id) \
+ (AREF (HASH_VALUE (XHASH_TABLE (Vcoding_system_hash_table), id), 0))
+
+#define CODING_ID_ALIASES(id) \
+ (AREF (HASH_VALUE (XHASH_TABLE (Vcoding_system_hash_table), id), 1))
+
+#define CODING_ID_EOL_TYPE(id) \
+ (AREF (HASH_VALUE (XHASH_TABLE (Vcoding_system_hash_table), id), 2))
+
+#define CODING_ID_NAME(id) \
+ (HASH_KEY (XHASH_TABLE (Vcoding_system_hash_table), id))
+
+#define CODING_SYSTEM_SPEC(coding_system_symbol) \
+ (Fgethash (coding_system_symbol, Vcoding_system_hash_table, Qnil))
+
+#define CODING_SYSTEM_ID(coding_system_symbol) \
+ hash_lookup (XHASH_TABLE (Vcoding_system_hash_table), \
+ coding_system_symbol, NULL)
+
+#define CODING_SYSTEM_P(coding_system_symbol) \
+ (! NILP (CODING_SYSTEM_SPEC (coding_system_symbol)))
+
+#define CHECK_CODING_SYSTEM(x) \
+ do { \
+ if (!CODING_SYSTEM_P (x)) \
+ x = wrong_type_argument (Qcoding_system_p, (x)); \
+ } while (0)
+
+
+#define CHECK_CODING_SYSTEM_GET_SPEC(x, spec) \
+ do { \
+ spec = CODING_SYSTEM_SPEC (x); \
+ if (NILP (spec)) \
+ x = wrong_type_argument (Qcoding_system_p, (x)); \
+ } while (0)
+
+
+#define CHECK_CODING_SYSTEM_GET_ID(x, id) \
+ do \
+ { \
+ id = CODING_SYSTEM_ID (x); \
+ if (id < 0) \
+ x = wrong_type_argument (Qcoding_system_p, (x)); \
+ } while (0)
+
+
+/*** GENERAL section ***/
+
+/* Enumeration of result code of code conversion. */
+enum coding_result_code
+ {
+ CODING_RESULT_SUCCESS,
+ CODING_RESULT_INSUFFICIENT_SRC,
+ CODING_RESULT_INSUFFICIENT_DST,
+ CODING_RESULT_INCONSISTENT_EOL,
+ CODING_RESULT_INSUFFICIENT_CMP,
+ CODING_RESULT_INTERRUPT,
+ CODING_RESULT_INSUFFICIENT_MEM
+ };
+
+
+/* Macros used for the member `mode' of the struct coding_system. */
+
+/* If set, recover the original CR or LF of the already decoded text
+ when the decoding routine encounters an inconsistent eol format. */
+#define CODING_MODE_INHIBIT_INCONSISTENT_EOL 0x01
+
+/* If set, the decoding/encoding routines treat the current data as
+ the last block of the whole text to be converted, and do the
+ appropriate finishing job. */
+#define CODING_MODE_LAST_BLOCK 0x02
+
+/* If set, it means that the current source text is in a buffer which
+ enables selective display. */
+#define CODING_MODE_SELECTIVE_DISPLAY 0x04
+
+/* This flag is used by the decoding/encoding routines on the fly. If
+ set, it means that right-to-left text is being processed. */
+#define CODING_MODE_DIRECTION 0x08
+
+#define CODING_MODE_FIXED_DESTINATION 0x10
+
+#define CODING_MODE_SAFE_ENCODING 0x20
+
+/* Structure of the field `spec.iso_2022' in the structure
+ `coding_system'. */
+struct iso_2022_spec
+{
+ /* Bit-wise-or of CODING_ISO_FLAG_XXX. */
+ unsigned flags;
+
+ /* The current graphic register invoked to each graphic plane. */
+ int current_invocation[2];
+
+ /* The current charset designated to each graphic register. The
+ value -1 means that not charset is designated, -2 means that
+ there was an invalid designation previously. */
+ int current_designation[4];
+
+ /* Set to 1 temporarily only when graphic register 2 or 3 is invoked
+ by single-shift while encoding. */
+ int single_shifting;
+
+ /* Set to 1 temporarily only when processing at beginning of line. */
+ int bol;
+};
+
+struct ccl_spec;
+
+enum utf_16_bom_type
+ {
+ utf_16_detect_bom,
+ utf_16_without_bom,
+ utf_16_with_bom
+ };
+
+enum utf_16_endian_type
+ {
+ utf_16_big_endian,
+ utf_16_little_endian
+ };
+
+struct utf_16_spec
+{
+ enum utf_16_bom_type bom;
+ enum utf_16_endian_type endian;
+ int surrogate;
+};
+
+struct coding_detection_info
+{
+ /* Values of these members are bitwise-OR of CATEGORY_MASK_XXXs. */
+ /* Which categories are already checked. */
+ int checked;
+ /* Which categories are strongly found. */
+ int found;
+ /* Which categories are rejected. */
+ int rejected;
+};
+
+
+struct coding_system
+{
+ /* ID number of the coding system. This is an index to
+ Vcoding_system_hash_table. This value is set by
+ setup_coding_system. At the early stage of building time, this
+ value is -1 in the array coding_categories to indicate that no
+ coding-system of that category is yet defined. */
+ int id;
+
+ /* Flag bits of the coding system. The meaning of each bit is common
+ to all types of coding systems. */
+ int common_flags;
+
+ /* Mode bits of the coding system. See the comments of the macros
+ CODING_MODE_XXX. */
+ unsigned int mode;
+
+ /* Detailed information specific to each type of coding system. */
+ union
+ {
+ struct iso_2022_spec iso_2022;
+ struct ccl_spec *ccl; /* Defined in ccl.h. */
+ struct utf_16_spec utf_16;
+ int emacs_mule_full_support;
+ } spec;
+
+ int max_charset_id;
+ char *safe_charsets;
+
+ /* The following two members specify how binary 8-bit code 128..255
+ are represented in source and destination text respectively. 1
+ means they are represented by 2-byte sequence, 0 means they are
+ represented by 1-byte as is (see the comment in character.h). */
+ unsigned src_multibyte : 1;
+ unsigned dst_multibyte : 1;
+
+ /* How may heading bytes we can skip for decoding. This is set to
+ -1 in setup_coding_system, and updated by detect_coding. So,
+ when this is equal to the byte length of the text being
+ converted, we can skip the actual conversion process. */
+ int head_ascii;
+
+ /* The following members are set by encoding/decoding routine. */
+ EMACS_INT produced, produced_char, consumed, consumed_char;
+
+ /* Number of error source data found in a decoding routine. */
+ int errors;
+
+ /* Store the positions of error source data. */
+ EMACS_INT *error_positions;
+
+ /* Finish status of code conversion. */
+ enum coding_result_code result;
+
+ /* The following members are all Lisp symbols. We don't have to
+ protect them from GC because the current garbage collection
+ doesn't relocate Lisp symbols. But, when it is changed, we must
+ find a way to protect them. */
+
+ EMACS_INT src_pos, src_pos_byte, src_chars, src_bytes;
+ Lisp_Object src_object;
+ unsigned char *source;
+
+ EMACS_INT dst_pos, dst_pos_byte, dst_bytes;
+ Lisp_Object dst_object;
+ unsigned char *destination;
+
+ int chars_at_source;
+
+ /* If an element is non-negative, it is a character code.
+
+ If it is in the range -128..-1, it is a 8-bit character code
+ minus 256.
+
+ If it is less than -128, it specifies the start of an annotation
+ chunk. The length of the chunk is -128 minus the value of the
+ element. The following elements are OFFSET, ANNOTATION-TYPE, and
+ a sequence of actual data for the annotation. OFFSET is a
+ character position offset from dst_pos or src_pos,
+ ANNOTATION-TYPE specfies the meaning of the annotation and how to
+ handle the following data.. */
+ int *charbuf;
+ int charbuf_size, charbuf_used;
+
+ /* Set to 1 if charbuf contains an annotation. */
+ int annotated;
+
+ unsigned char carryover[64];
+ int carryover_bytes;
+
+ int default_char;
+
+ int (*detector) P_ ((struct coding_system *,
+ struct coding_detection_info *));
+ void (*decoder) P_ ((struct coding_system *));
+ int (*encoder) P_ ((struct coding_system *));
+};
+
+/* Meanings of bits in the member `common_flags' of the structure
+ coding_system. The lowest 8 bits are reserved for various kind of
+ annotations (currently two of them are used). */
+#define CODING_ANNOTATION_MASK 0x00FF
+#define CODING_ANNOTATE_COMPOSITION_MASK 0x0001
+#define CODING_ANNOTATE_DIRECTION_MASK 0x0002
+#define CODING_ANNOTATE_CHARSET_MASK 0x0003
+#define CODING_FOR_UNIBYTE_MASK 0x0100
+#define CODING_REQUIRE_FLUSHING_MASK 0x0200
+#define CODING_REQUIRE_DECODING_MASK 0x0400
+#define CODING_REQUIRE_ENCODING_MASK 0x0800
+#define CODING_REQUIRE_DETECTION_MASK 0x1000
+#define CODING_RESET_AT_BOL_MASK 0x2000
+
+/* Return 1 if the coding context CODING requires annotaion
+ handling. */
+#define CODING_REQUIRE_ANNOTATION(coding) \
+ ((coding)->common_flags & CODING_ANNOTATION_MASK)
+
+/* Return 1 if the coding context CODING prefers decoding into unibyte. */
+#define CODING_FOR_UNIBYTE(coding) \
+ ((coding)->common_flags & CODING_FOR_UNIBYTE_MASK)
+
+/* Return 1 if the coding context CODING requires specific code to be
+ attached at the tail of converted text. */
+#define CODING_REQUIRE_FLUSHING(coding) \
+ ((coding)->common_flags & CODING_REQUIRE_FLUSHING_MASK)
+
+/* Return 1 if the coding context CODING requires code conversion on
+ decoding. */
+#define CODING_REQUIRE_DECODING(coding) \
+ ((coding)->dst_multibyte \
+ || (coding)->common_flags & CODING_REQUIRE_DECODING_MASK)
+
+
+/* Return 1 if the coding context CODING requires code conversion on
+ encoding. */
+#define CODING_REQUIRE_ENCODING(coding) \
+ ((coding)->src_multibyte \
+ || (coding)->common_flags & CODING_REQUIRE_ENCODING_MASK \
+ || (coding)->mode & CODING_MODE_SELECTIVE_DISPLAY)
+
+
+/* Return 1 if the coding context CODING requires some kind of code
+ detection. */
+#define CODING_REQUIRE_DETECTION(coding) \
+ ((coding)->common_flags & CODING_REQUIRE_DETECTION_MASK)
+
+/* Return 1 if the coding context CODING requires code conversion on
+ decoding or some kind of code detection. */
+#define CODING_MAY_REQUIRE_DECODING(coding) \
+ (CODING_REQUIRE_DECODING (coding) \
+ || CODING_REQUIRE_DETECTION (coding))
+
+/* Macros to decode or encode a character of JISX0208 in SJIS. S1 and
+ S2 are the 1st and 2nd position-codes of JISX0208 in SJIS coding
+ system. C1 and C2 are the 1st and 2nd position codes of Emacs'
+ internal format. */
+
+#define SJIS_TO_JIS(code) \
+ do { \
+ int s1, s2, j1, j2; \
+ \
+ s1 = (code) >> 8, s2 = (code) & 0xFF; \
+ \
+ if (s2 >= 0x9F) \
+ (j1 = s1 * 2 - (s1 >= 0xE0 ? 0x160 : 0xE0), \
+ j2 = s2 - 0x7E); \
+ else \
+ (j1 = s1 * 2 - ((s1 >= 0xE0) ? 0x161 : 0xE1), \
+ j2 = s2 - ((s2 >= 0x7F) ? 0x20 : 0x1F)); \
+ (code) = (j1 << 8) | j2; \
+ } while (0)
+
+
+#define JIS_TO_SJIS(code) \
+ do { \
+ int s1, s2, j1, j2; \
+ \
+ j1 = (code) >> 8, j2 = (code) & 0xFF; \
+ if (j1 & 1) \
+ (s1 = j1 / 2 + ((j1 < 0x5F) ? 0x71 : 0xB1), \
+ s2 = j2 + ((j2 >= 0x60) ? 0x20 : 0x1F)); \
+ else \
+ (s1 = j1 / 2 + ((j1 < 0x5F) ? 0x70 : 0xB0), \
+ s2 = j2 + 0x7E); \
+ (code) = (s1 << 8) | s2; \
+ } while (0)
+
+
+/* Encode the file name NAME using the specified coding system
+ for file names, if any. */
+#define ENCODE_FILE(name) \
+ (! NILP (Vfile_name_coding_system) \
+ && XFASTINT (Vfile_name_coding_system) != 0 \
+ ? code_convert_string_norecord (name, Vfile_name_coding_system, 1) \
+ : (! NILP (Vdefault_file_name_coding_system) \
+ && XFASTINT (Vdefault_file_name_coding_system) != 0 \
+ ? code_convert_string_norecord (name, Vdefault_file_name_coding_system, 1) \
+ : name))
+
+
+/* Decode the file name NAME using the specified coding system
+ for file names, if any. */
+#define DECODE_FILE(name) \
+ (! NILP (Vfile_name_coding_system) \
+ && XFASTINT (Vfile_name_coding_system) != 0 \
+ ? code_convert_string_norecord (name, Vfile_name_coding_system, 0) \
+ : (! NILP (Vdefault_file_name_coding_system) \
+ && XFASTINT (Vdefault_file_name_coding_system) != 0 \
+ ? code_convert_string_norecord (name, Vdefault_file_name_coding_system, 0) \
+ : name))
+
+
+#ifdef WINDOWSNT
+/* Encode the string STR using the specified coding system
+ for w32 system functions, if any. */
+#define ENCODE_SYSTEM(str) \
+ (! NILP (Vlocale_coding_system) \
+ && XFASTINT (Vlocale_coding_system) != 0 \
+ ? code_convert_string_norecord (str, Vlocale_coding_system, 1) \
+ : str)
+
+/* Decode the string STR using the specified coding system
+ for w32 system functions, if any. */
+#define DECODE_SYSTEM(name) \
+ (! NILP (Vlocale_coding_system) \
+ && XFASTINT (Vlocale_coding_system) != 0 \
+ ? code_convert_string_norecord (str, Vlocale_coding_system, 0) \
+ : str)
+
+#else /* WINDOWSNT */
+
+#define ENCODE_SYSTEM(str) string_make_unibyte(str)
+#define DECODE_SYSTEM(name) name
+
+#endif /* !WINDOWSNT */
+
+/* Extern declarations. */
+extern Lisp_Object make_conversion_work_buffer P_ ((int));
+extern Lisp_Object code_conversion_restore P_ ((Lisp_Object));
+extern int decoding_buffer_size P_ ((struct coding_system *, int));
+extern int encoding_buffer_size P_ ((struct coding_system *, int));
+extern void setup_coding_system P_ ((Lisp_Object, struct coding_system *));
+extern void detect_coding P_ ((struct coding_system *));
+extern Lisp_Object code_convert_region P_ ((Lisp_Object, Lisp_Object,
+ Lisp_Object, Lisp_Object,
+ int, int));
+extern Lisp_Object code_convert_string P_ ((Lisp_Object, Lisp_Object,
+ Lisp_Object, int, int, int));
+extern Lisp_Object code_convert_string_norecord P_ ((Lisp_Object, Lisp_Object,
+ int));
+extern Lisp_Object raw_text_coding_system P_ ((Lisp_Object));
+extern Lisp_Object coding_inherit_eol_type P_ ((Lisp_Object, Lisp_Object));
+
+extern int decode_coding_gap P_ ((struct coding_system *,
+ EMACS_INT, EMACS_INT));
+extern int encode_coding_gap P_ ((struct coding_system *,
+ EMACS_INT, EMACS_INT));
+extern void decode_coding_object P_ ((struct coding_system *,
+ Lisp_Object, EMACS_INT, EMACS_INT,
+ EMACS_INT, EMACS_INT, Lisp_Object));
+extern void encode_coding_object P_ ((struct coding_system *,
+ Lisp_Object, EMACS_INT, EMACS_INT,
+ EMACS_INT, EMACS_INT, Lisp_Object));
+
+#define decode_coding_region(coding, from, to) \
+ decode_coding_object (coding, Fcurrent_buffer (), \
+ from, CHAR_TO_BYTE (from), \
+ to, CHAR_TO_BYTE (to), Fcurrent_buffer ())
+
+
+#define encode_coding_region(coding, from, to) \
+ encode_coding_object (coding, Fcurrent_buffer (), \
+ from, CHAR_TO_BYTE (from), \
+ to, CHAR_TO_BYTE (to), Fcurrent_buffer ())
+
+
+#define decode_coding_string(coding, string, nocopy) \
+ decode_coding_object (coding, string, 0, 0, XSTRING (string)->size, \
+ STRING_BYTES (XSTRING (string)), Qt)
+
+#define encode_coding_string(coding, string, nocopy) \
+ (encode_coding_object (coding, string, 0, 0, XSTRING (string)->size, \
+ STRING_BYTES (XSTRING (string)), Qt), \
+ (coding)->dst_object)
+
+
+#define decode_coding_c_string(coding, src, bytes, dst_object) \
+ do { \
+ (coding)->source = (src); \
+ (coding)->src_chars = (coding)->src_bytes = (bytes); \
+ decode_coding_object ((coding), Qnil, 0, 0, (bytes), (bytes), \
+ (dst_object)); \
+ } while (0)
+
+
+extern Lisp_Object preferred_coding_system P_ (());
+
+
+extern Lisp_Object Qcoding_system, Qeol_type, Qcoding_category_index;
+extern Lisp_Object Qcoding_system_p;
+extern Lisp_Object Qraw_text, Qemacs_mule, Qno_conversion, Qundecided;
+extern Lisp_Object Qiso_2022;
+extern Lisp_Object Qbuffer_file_coding_system;
+
+extern Lisp_Object Qunix, Qdos, Qmac;
+
+extern Lisp_Object Qtranslation_table;
+extern Lisp_Object Qtranslation_table_id;
+
+/* Mnemonic strings to indicate each type of end-of-line. */
+extern Lisp_Object eol_mnemonic_unix, eol_mnemonic_dos, eol_mnemonic_mac;
+/* Mnemonic string to indicate type of end-of-line is not yet decided. */
+extern Lisp_Object eol_mnemonic_undecided;
+
+#ifdef emacs
+extern Lisp_Object Qfile_coding_system;
+extern Lisp_Object Qcall_process, Qcall_process_region, Qprocess_argument;
+extern Lisp_Object Qstart_process, Qopen_network_stream;
+extern Lisp_Object Qwrite_region;
+
+extern char *emacs_strerror P_ ((int));
+
+/* Coding-system for reading files and receiving data from process. */
+extern Lisp_Object Vcoding_system_for_read;
+/* Coding-system for writing files and sending data to process. */
+extern Lisp_Object Vcoding_system_for_write;
+/* Coding-system actually used in the latest I/O. */
+extern Lisp_Object Vlast_coding_system_used;
+/* Coding-system to use with system messages (e.g. strerror). */
+extern Lisp_Object Vlocale_coding_system;
+
+/* If non-zero, process buffer inherits the coding system used to decode
+ the subprocess output. */
+extern int inherit_process_coding_system;
+
+/* Coding-system to be used for encoding terminal output. This
+ structure contains information of a coding-system specified by the
+ function `set-terminal-coding-system'. */
+extern struct coding_system terminal_coding;
+
+/* Coding system to be used to encode text for terminal display when
+ terminal coding system is nil. */
+extern struct coding_system safe_terminal_coding;
+
+/* Coding-system of what is sent from terminal keyboard. This
+ structure contains information of a coding-system specified by the
+ function `set-keyboard-coding-system'. */
+extern struct coding_system keyboard_coding;
+
+/* Default coding systems used for process I/O. */
+extern Lisp_Object Vdefault_process_coding_system;
+
+/* Function to call to force a user to force select a propert coding
+ system. */
+extern Lisp_Object Vselect_safe_coding_system_function;
+
+/* Coding system for file names, or nil if none. */
+extern Lisp_Object Vfile_name_coding_system;
+
+/* Coding system for file names used only when
+ Vfile_name_coding_system is nil. */
+extern Lisp_Object Vdefault_file_name_coding_system;
+
+#endif
+
+/* Error signaled when there's a problem with detecting coding system */
+extern Lisp_Object Qcoding_system_error;
+
+extern char emacs_mule_bytes[256];
+extern int emacs_mule_string_char P_ ((unsigned char *));
+
+#endif /* EMACS_CODING_H */
HCoop / bpt / emacs.git / blobdiff