Mercurial > hg > xemacs-beta
view src/file-coding.h @ 617:af57a77cbc92
[xemacs-hg @ 2001-06-18 07:09:50 by ben]
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DOCUMENTATION FIXES:
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eval.c: Correct documentation.
elhash.c: Doc correction.
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LISP OBJECT CLEANUP:
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bytecode.h, buffer.h, casetab.h, chartab.h, console-msw.h, console.h, database.c, device.h, eldap.h, elhash.h, events.h, extents.h, faces.h, file-coding.h, frame.h, glyphs.h, gui-x.h, gui.h, keymap.h, lisp-disunion.h, lisp-union.h, lisp.h, lrecord.h, lstream.h, mule-charset.h, objects.h, opaque.h, postgresql.h, process.h, rangetab.h, specifier.h, toolbar.h, tooltalk.h, ui-gtk.h: Add wrap_* to all objects (it was already there for a few of them)
-- an expression to encapsulate a pointer into a Lisp object,
rather than the inconvenient XSET*. "wrap" was chosen because
"make" as in make_int(), make_char() is not appropriate. (It
implies allocation. The issue does not exist for ints and chars
because they are not allocated.)
Full error checking has been added to these expressions. When
used without error checking, non-union build, use of these
expressions will incur no loss of efficiency. (In fact, XSET* is
now defined in terms of wrap_* in a non-union build.) In a union
build, you will also get no loss of efficiency provided that you
have a decent optimizing compiler, and a compiler that either
understands inlines or automatically inlines those particular
functions. (And since people don't normally do their production
builds on union, it doesn't matter.)
Update the sample Lisp object definition in lrecord.h accordingly.
dumper.c: Fix places in dumper that referenced wrap_object to reference
its new name, wrap_pointer_1.
buffer.c, bufslots.h, conslots.h, console.c, console.h, devslots.h, device.c, device.h, frame.c, frame.h, frameslots.h, window.c, window.h, winslots.h: -- Extract out the Lisp objects of `struct device' into devslots.h,
just like for the other structures.
-- Extract out the remaining (not copied into the window config)
Lisp objects in `struct window' into winslots.h; use different
macros (WINDOW_SLOT vs. WINDOW_SAVED_SLOT) to differentiate them.
-- Eliminate the `dead' flag of `struct frame', since it
duplicates information already available in `framemeths', and fix
FRAME_LIVE_P accordingly. (Devices and consoles already work this
way.)
-- In *slots.h, switch to system where MARKED_SLOT is automatically
undef'd at the end of the file. (Follows what winslots.h already
does.)
-- Update the comments at the beginning of *slots.h to be accurate.
-- When making any of the above objects dead, zero it out entirely
and reset all Lisp object slots to Qnil. (We were already doing
this somewhat, but not consistently.) This (1) Eliminates the
possibility of extra objects hanging around that ought to be
GC'd, (2) Causes an immediate crash if anyone tries to access a
structure in one of these objects, (3) Ensures consistent behavior
wrt dead objects.
dialog-msw.c: Use internal_object_printer, since this object should not escape.
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FIXING A CRASH THAT I HIT ONCE (AND A RELATED BAD BEHAVIOR):
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eval.c: Fix up some comments about the FSF implementation.
Fix two nasty bugs:
(1) condition_case_unwind frees the conses sitting in the
catch->tag slot too quickly, resulting in a crash that I hit.
(2) catches need to be unwound one at a time when calling
unwind-protect code, rather than all at once at the end; otherwise,
incorrect behavior can result. (A comment shows exactly how.)
backtrace.h: Improve comment about FSF differences in the handler stack.
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FIXING A CRASH THAT I REPEATEDLY HIT WHEN USING THE MOUSE WHEEL
UNDER MSWINDOWS:
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Basic idea: My crash is due either to a dead, non-marked,
GC-collected frame inside of a window mirror, or a prematurely
freed window mirror. We need to mark the Lisp objects inside of
window mirrors. Tracking the lifespan of window mirrors and
scrollbar instances is extremely hard, and there may well be
lurking bugs where such objects are freed too soon. The only safe
way to fix these problems (and it fixes both problems at once) is
to make both of these structures Lisp objects.
lrecord.h, emacs.c, inline.c, scrollbar-gtk.c, scrollbar-msw.c, scrollbar-x.c, scrollbar.c, scrollbar.h, symsinit.h: Make scrollbar instances actual Lisp objects. Mark the window
mirrors in them. inline.c needs to know about scrollbar.h now.
Record the new type in lrecord.h. Fix up scrollbar-*.c
appropriately. Create a hash table in scrollbar-msw.c so that the
scrollbar instances stored in scrollbar HWND's are properly
GC-protected. Create complex_vars_of_scrollbar_mswindows() to
create the hash table at startup, and call it from emacs.c. Don't
store the scrollbar instance as a property of the GTK scrollbar,
as it's not used and if we did this, we'd have to separately
GC-protect it in a hash table, like in MS Windows.
lrecord.h, frame.h, frame.c, frameslots.h, redisplay.c, window.c, window.h: Move mark_window_mirror from redisplay.c to window.c. Make window
mirrors actual Lisp objects. Tell lrecord.h about them. Change
the window mirror member of struct frame from a pointer to a Lisp
object, and add XWINDOW_MIRROR in appropriate places. Mark the
scrollbar instances in the window mirror.
redisplay.c, redisplay.h, alloc.c: Delete mark_redisplay. Don't call mark_redisplay. We now mark
frame-specific structures in mark_frame.
NOTE: I also deleted an extremely questionable call to
update_frame_window_mirrors(). It was extremely questionable
before, and now totally impossible, since it will create
Lisp objects during redisplay.
frame.c: Mark the scrollbar instances, which are now Lisp objects.
Call mark_gutter() here, not in mark_redisplay().
gutter.c: Update comments about correct marking.
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ISSUES BROUGHT UP BY MARTIN:
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buffer.h: Put back these macros the way Steve T and I think they ought to be.
I already explained in a previous changelog entry why I think these
macros should be the way I'd defined them. Once again:
We fix these macros so they don't care about the type of their
lvalues. The non-C-string equivalents of these already function
in the same way, and it's correct because it should be OK to pass
in a CBufbyte *, a BufByte *, a Char_Binary *, an UChar_Binary *,
etc. The whole reason for these different types is to work around
errors caused by signed-vs-unsigned non-matching types. Any
possible error that might be caught in a DFC macro would also be
caught wherever the argument is used elsewhere. So creating
multiple macro versions would add no useful error-checking and
just further complicate an already complicated area.
As for Martin's "ANSI aliasing" bug, XEmacs is not ANSI-aliasing
clean and probably never will be. Unless the board agrees to
change XEmacs in this way (and we really don't want to go down
that road), this is not a bug.
sound.h: Undo Martin's type change.
signal.c: Fix problem identified by Martin with Linux and g++ due to
non-standard declaration of setitimer().
systime.h: Update the docs for "qxe_" to point out why making the
encapsulation explicit is always the right way to go. (setitimer()
itself serves as an example.)
For 21.4:
update-elc-2.el: Correct misplaced parentheses, making lisp/mule not get
recompiled.
| author | ben |
|---|---|
| date | Mon, 18 Jun 2001 07:10:32 +0000 |
| parents | ef4d2466a29c |
| children | fdefd0186b75 |
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/* Header for code conversion stuff Copyright (C) 1991, 1995 Free Software Foundation, Inc. Copyright (C) 1995 Sun Microsystems, Inc. This file is part of XEmacs. XEmacs is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. XEmacs is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with XEmacs; see the file COPYING. If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ /* Synched up with: Mule 2.3. Not in FSF. */ /* 91.10.09 written by K.Handa <handa@etl.go.jp> */ /* Rewritten by Ben Wing <ben@xemacs.org>. */ #ifndef INCLUDED_file_coding_h_ #define INCLUDED_file_coding_h_ struct decoding_stream; struct encoding_stream; /* Coding system types. These go into the TYPE field of a Lisp_Coding_System. */ enum coding_system_type { CODESYS_AUTODETECT, /* Automatic conversion. */ #ifdef MULE CODESYS_SHIFT_JIS, /* Shift-JIS; Hankaku (half-width) KANA is also supported. */ CODESYS_ISO2022, /* Any ISO2022-compliant coding system. Includes JIS, EUC, CTEXT */ CODESYS_BIG5, /* BIG5 (used for Taiwanese). */ CODESYS_UCS4, /* ISO 10646 UCS-4 */ CODESYS_UTF8, /* ISO 10646 UTF-8 */ CODESYS_CCL, /* Converter written in CCL. */ #endif CODESYS_NO_CONVERSION /* "No conversion"; used for binary files. We use quotes because there really is some conversion being applied, but it appears to the user as if the text is read in without conversion. */ #ifdef DEBUG_XEMACS ,CODESYS_INTERNAL /* Raw (internally-formatted) data. */ #endif }; enum eol_type { EOL_AUTODETECT, EOL_LF, EOL_CRLF, EOL_CR }; typedef enum eol_type eol_type_t; #ifdef MULE typedef struct charset_conversion_spec charset_conversion_spec; struct charset_conversion_spec { Lisp_Object from_charset; Lisp_Object to_charset; }; typedef struct { Dynarr_declare (charset_conversion_spec); } charset_conversion_spec_dynarr; #endif struct Lisp_Coding_System { struct lcrecord_header header; /* Name and doc string of this coding system. */ Lisp_Object name; Lisp_Object doc_string; /* This is the major type of the coding system -- one of Big5, ISO2022, Shift-JIS, etc. See the constants above. */ enum coding_system_type type; /* Mnemonic string displayed in the modeline when this coding system is active for a particular buffer. */ Lisp_Object mnemonic; Lisp_Object post_read_conversion; Lisp_Object pre_write_conversion; eol_type_t eol_type; /* Subsidiary coding systems that specify a particular type of EOL marking, rather than autodetecting it. These will only be non-nil if (eol_type == EOL_AUTODETECT). */ Lisp_Object eol_lf; Lisp_Object eol_crlf; Lisp_Object eol_cr; #ifdef MULE struct { /* What are the charsets to be initially designated to G0, G1, G2, G3? If t, no charset is initially designated. If nil, no charset is initially designated and no charset is allowed to be designated. */ Lisp_Object initial_charset[4]; /* If true, a designation escape sequence needs to be sent on output for the charset in G[0-3] before that charset is used. */ unsigned char force_charset_on_output[4]; charset_conversion_spec_dynarr *input_conv; charset_conversion_spec_dynarr *output_conv; unsigned int shoort :1; /* C makes you speak Dutch */ unsigned int no_ascii_eol :1; unsigned int no_ascii_cntl :1; unsigned int seven :1; unsigned int lock_shift :1; unsigned int no_iso6429 :1; unsigned int escape_quoted :1; } iso2022; struct { /* For a CCL coding system, these specify the CCL programs used for decoding (input) and encoding (output). */ Lisp_Object decode; Lisp_Object encode; } ccl; #endif }; typedef struct Lisp_Coding_System Lisp_Coding_System; DECLARE_LRECORD (coding_system, Lisp_Coding_System); #define XCODING_SYSTEM(x) XRECORD (x, coding_system, Lisp_Coding_System) #define XSETCODING_SYSTEM(x, p) XSETRECORD (x, p, coding_system) #define wrap_coding_system(p) wrap_record (p, coding_system) #define CODING_SYSTEMP(x) RECORDP (x, coding_system) #define CHECK_CODING_SYSTEM(x) CHECK_RECORD (x, coding_system) #define CONCHECK_CODING_SYSTEM(x) CONCHECK_RECORD (x, coding_system) #define CODING_SYSTEM_NAME(codesys) ((codesys)->name) #define CODING_SYSTEM_DOC_STRING(codesys) ((codesys)->doc_string) #define CODING_SYSTEM_TYPE(codesys) ((codesys)->type) #define CODING_SYSTEM_MNEMONIC(codesys) ((codesys)->mnemonic) #define CODING_SYSTEM_POST_READ_CONVERSION(codesys) \ ((codesys)->post_read_conversion) #define CODING_SYSTEM_PRE_WRITE_CONVERSION(codesys) \ ((codesys)->pre_write_conversion) #define CODING_SYSTEM_EOL_TYPE(codesys) ((codesys)->eol_type) #define CODING_SYSTEM_EOL_LF(codesys) ((codesys)->eol_lf) #define CODING_SYSTEM_EOL_CRLF(codesys) ((codesys)->eol_crlf) #define CODING_SYSTEM_EOL_CR(codesys) ((codesys)->eol_cr) #ifdef MULE #define CODING_SYSTEM_ISO2022_INITIAL_CHARSET(codesys, g) \ ((codesys)->iso2022.initial_charset[g]) #define CODING_SYSTEM_ISO2022_FORCE_CHARSET_ON_OUTPUT(codesys, g) \ ((codesys)->iso2022.force_charset_on_output[g]) #define CODING_SYSTEM_ISO2022_SHORT(codesys) ((codesys)->iso2022.shoort) #define CODING_SYSTEM_ISO2022_NO_ASCII_EOL(codesys) \ ((codesys)->iso2022.no_ascii_eol) #define CODING_SYSTEM_ISO2022_NO_ASCII_CNTL(codesys) \ ((codesys)->iso2022.no_ascii_cntl) #define CODING_SYSTEM_ISO2022_SEVEN(codesys) ((codesys)->iso2022.seven) #define CODING_SYSTEM_ISO2022_LOCK_SHIFT(codesys) \ ((codesys)->iso2022.lock_shift) #define CODING_SYSTEM_ISO2022_NO_ISO6429(codesys) \ ((codesys)->iso2022.no_iso6429) #define CODING_SYSTEM_ISO2022_ESCAPE_QUOTED(codesys) \ ((codesys)->iso2022.escape_quoted) #define CODING_SYSTEM_CCL_DECODE(codesys) ((codesys)->ccl.decode) #define CODING_SYSTEM_CCL_ENCODE(codesys) ((codesys)->ccl.encode) #endif /* MULE */ #define XCODING_SYSTEM_NAME(codesys) \ CODING_SYSTEM_NAME (XCODING_SYSTEM (codesys)) #define XCODING_SYSTEM_DOC_STRING(codesys) \ CODING_SYSTEM_DOC_STRING (XCODING_SYSTEM (codesys)) #define XCODING_SYSTEM_TYPE(codesys) \ CODING_SYSTEM_TYPE (XCODING_SYSTEM (codesys)) #define XCODING_SYSTEM_MNEMONIC(codesys) \ CODING_SYSTEM_MNEMONIC (XCODING_SYSTEM (codesys)) #define XCODING_SYSTEM_POST_READ_CONVERSION(codesys) \ CODING_SYSTEM_POST_READ_CONVERSION (XCODING_SYSTEM (codesys)) #define XCODING_SYSTEM_PRE_WRITE_CONVERSION(codesys) \ CODING_SYSTEM_PRE_WRITE_CONVERSION (XCODING_SYSTEM (codesys)) #define XCODING_SYSTEM_EOL_TYPE(codesys) \ CODING_SYSTEM_EOL_TYPE (XCODING_SYSTEM (codesys)) #define XCODING_SYSTEM_EOL_LF(codesys) \ CODING_SYSTEM_EOL_LF (XCODING_SYSTEM (codesys)) #define XCODING_SYSTEM_EOL_CRLF(codesys) \ CODING_SYSTEM_EOL_CRLF (XCODING_SYSTEM (codesys)) #define XCODING_SYSTEM_EOL_CR(codesys) \ CODING_SYSTEM_EOL_CR (XCODING_SYSTEM (codesys)) #ifdef MULE #define XCODING_SYSTEM_ISO2022_INITIAL_CHARSET(codesys, g) \ CODING_SYSTEM_ISO2022_INITIAL_CHARSET (XCODING_SYSTEM (codesys), g) #define XCODING_SYSTEM_ISO2022_FORCE_CHARSET_ON_OUTPUT(codesys, g) \ CODING_SYSTEM_ISO2022_FORCE_CHARSET_ON_OUTPUT (XCODING_SYSTEM (codesys), g) #define XCODING_SYSTEM_ISO2022_SHORT(codesys) \ CODING_SYSTEM_ISO2022_SHORT (XCODING_SYSTEM (codesys)) #define XCODING_SYSTEM_ISO2022_NO_ASCII_EOL(codesys) \ CODING_SYSTEM_ISO2022_NO_ASCII_EOL (XCODING_SYSTEM (codesys)) #define XCODING_SYSTEM_ISO2022_NO_ASCII_CNTL(codesys) \ CODING_SYSTEM_ISO2022_NO_ASCII_CNTL (XCODING_SYSTEM (codesys)) #define XCODING_SYSTEM_ISO2022_SEVEN(codesys) \ CODING_SYSTEM_ISO2022_SEVEN (XCODING_SYSTEM (codesys)) #define XCODING_SYSTEM_ISO2022_LOCK_SHIFT(codesys) \ CODING_SYSTEM_ISO2022_LOCK_SHIFT (XCODING_SYSTEM (codesys)) #define XCODING_SYSTEM_ISO2022_NO_ISO6429(codesys) \ CODING_SYSTEM_ISO2022_NO_ISO6429 (XCODING_SYSTEM (codesys)) #define XCODING_SYSTEM_ISO2022_ESCAPE_QUOTED(codesys) \ CODING_SYSTEM_ISO2022_ESCAPE_QUOTED (XCODING_SYSTEM (codesys)) #define XCODING_SYSTEM_CCL_DECODE(codesys) \ CODING_SYSTEM_CCL_DECODE (XCODING_SYSTEM (codesys)) #define XCODING_SYSTEM_CCL_ENCODE(codesys) \ CODING_SYSTEM_CCL_ENCODE (XCODING_SYSTEM (codesys)) #endif /* MULE */ EXFUN (Fcoding_category_list, 0); EXFUN (Fcoding_category_system, 1); EXFUN (Fcoding_priority_list, 0); EXFUN (Fcoding_system_doc_string, 1); EXFUN (Fcoding_system_list, 0); EXFUN (Fcoding_system_name, 1); EXFUN (Fcoding_system_p, 1); EXFUN (Fcoding_system_property, 2); EXFUN (Fcoding_system_type, 1); EXFUN (Fcopy_coding_system, 2); EXFUN (Fdecode_big5_char, 1); EXFUN (Fdecode_coding_region, 4); EXFUN (Fdecode_shift_jis_char, 1); EXFUN (Fdetect_coding_region, 3); EXFUN (Fencode_big5_char, 1); EXFUN (Fencode_coding_region, 4); EXFUN (Fencode_shift_jis_char, 1); EXFUN (Ffind_coding_system, 1); EXFUN (Fget_coding_system, 1); EXFUN (Fmake_coding_system, 4); EXFUN (Fset_coding_category_system, 2); EXFUN (Fset_coding_priority_list, 1); EXFUN (Fsubsidiary_coding_system, 2); extern Lisp_Object Qucs4, Qutf8; extern Lisp_Object Qbig5, Qccl, Qcharset_g0; extern Lisp_Object Qcharset_g1, Qcharset_g2, Qcharset_g3, Qcoding_system_error; extern Lisp_Object Qcoding_systemp, Qcr, Qcrlf, Qdecode, Qencode; extern Lisp_Object Qeol_cr, Qeol_crlf, Qeol_lf, Qeol_type, Qescape_quoted; extern Lisp_Object Qforce_g0_on_output, Qforce_g1_on_output; extern Lisp_Object Qforce_g2_on_output, Qforce_g3_on_output; extern Lisp_Object Qinput_charset_conversion, Qiso2022, Qlf, Qlock_shift; extern Lisp_Object Qmnemonic, Qno_ascii_cntl, Qno_ascii_eol, Qno_conversion; extern Lisp_Object Qraw_text; extern Lisp_Object Qno_iso6429, Qoutput_charset_conversion; extern Lisp_Object Qpost_read_conversion, Qpre_write_conversion, Qseven; extern Lisp_Object Qshift_jis, Qshort, Vcoding_system_for_read; extern Lisp_Object Vcoding_system_for_write, Vcoding_system_hash_table; extern Lisp_Object Vfile_name_coding_system, Vkeyboard_coding_system; extern Lisp_Object Vterminal_coding_system; /* Flags indicating current state while converting code. */ /* Used by everyone. */ #define CODING_STATE_END (1 << 0) /* If set, this is the last chunk of data being processed. When this is finished, output any necessary terminating control characters, escape sequences, etc. */ #define CODING_STATE_CR (1 << 1) /* If set, we just saw a CR. */ /* Used by Big 5 on output. */ #ifdef MULE #define CODING_STATE_BIG5_1 (1 << 2) /* If set, we just encountered LEADING_BYTE_BIG5_1. */ #define CODING_STATE_BIG5_2 (1 << 3) /* If set, we just encountered LEADING_BYTE_BIG5_2. */ /* Used by ISO2022 on input and output. */ #define CODING_STATE_R2L (1 << 4) /* If set, the current directionality is right-to-left. Otherwise, it's left-to-right. */ /* Used by ISO2022 on input. */ #define CODING_STATE_ESCAPE (1 << 5) /* If set, we're currently parsing an escape sequence and the upper 16 bits should be looked at to indicate what partial escape sequence we've seen so far. Otherwise, we're running through actual text. */ #define CODING_STATE_SS2 (1 << 6) /* If set, G2 is invoked into GL, but only for the next character. */ #define CODING_STATE_SS3 (1 << 7) /* If set, G3 is invoked into GL, but only for the next character. If both CODING_STATE_SS2 and CODING_STATE_SS3 are set, CODING_STATE_SS2 overrides; but this probably indicates an error in the text encoding. */ #ifdef ENABLE_COMPOSITE_CHARS #define CODING_STATE_COMPOSITE (1 << 8) /* If set, we're currently processing a composite character (i.e. a character constructed by overstriking two or more characters). */ #endif /* ENABLE_COMPOSITE_CHARS */ /* CODING_STATE_ISO2022_LOCK is the mask of flags that remain on until explicitly turned off when in the ISO2022 encoder/decoder. Other flags are turned off at the end of processing each character or escape sequence. */ #ifdef ENABLE_COMPOSITE_CHARS # define CODING_STATE_ISO2022_LOCK \ (CODING_STATE_END | CODING_STATE_COMPOSITE | CODING_STATE_R2L) #else # define CODING_STATE_ISO2022_LOCK (CODING_STATE_END | CODING_STATE_R2L) #endif #define CODING_STATE_BIG5_LOCK CODING_STATE_END /* Flags indicating what we've seen so far when parsing an ISO2022 escape sequence. */ enum iso_esc_flag { /* Partial sequences */ ISO_ESC_NOTHING, /* Nothing has been seen. */ ISO_ESC, /* We've seen ESC. */ ISO_ESC_2_4, /* We've seen ESC $. This indicates that we're designating a multi-byte, rather than a single-byte, character set. */ ISO_ESC_2_8, /* We've seen ESC 0x28, i.e. ESC (. This means designate a 94-character character set into G0. */ ISO_ESC_2_9, /* We've seen ESC 0x29 -- designate a 94-character character set into G1. */ ISO_ESC_2_10, /* We've seen ESC 0x2A. */ ISO_ESC_2_11, /* We've seen ESC 0x2B. */ ISO_ESC_2_12, /* We've seen ESC 0x2C -- designate a 96-character character set into G0. (This is not ISO2022-standard. The following 96-character control sequences are standard, though.) */ ISO_ESC_2_13, /* We've seen ESC 0x2D -- designate a 96-character character set into G1. */ ISO_ESC_2_14, /* We've seen ESC 0x2E. */ ISO_ESC_2_15, /* We've seen ESC 0x2F. */ ISO_ESC_2_4_8, /* We've seen ESC $ 0x28 -- designate a 94^N character set into G0. */ ISO_ESC_2_4_9, /* We've seen ESC $ 0x29. */ ISO_ESC_2_4_10, /* We've seen ESC $ 0x2A. */ ISO_ESC_2_4_11, /* We've seen ESC $ 0x2B. */ ISO_ESC_2_4_12, /* We've seen ESC $ 0x2C. */ ISO_ESC_2_4_13, /* We've seen ESC $ 0x2D. */ ISO_ESC_2_4_14, /* We've seen ESC $ 0x2E. */ ISO_ESC_2_4_15, /* We've seen ESC $ 0x2F. */ ISO_ESC_5_11, /* We've seen ESC [ or 0x9B. This starts a directionality-control sequence. The next character must be 0, 1, 2, or ]. */ ISO_ESC_5_11_0, /* We've seen 0x9B 0. The next character must be ]. */ ISO_ESC_5_11_1, /* We've seen 0x9B 1. The next character must be ]. */ ISO_ESC_5_11_2, /* We've seen 0x9B 2. The next character must be ]. */ /* Full sequences. */ #ifdef ENABLE_COMPOSITE_CHARS ISO_ESC_START_COMPOSITE, /* Private usage for START COMPOSING */ ISO_ESC_END_COMPOSITE, /* Private usage for END COMPOSING */ #endif /* ENABLE_COMPOSITE_CHARS */ ISO_ESC_SINGLE_SHIFT, /* We've seen a complete single-shift sequence. */ ISO_ESC_LOCKING_SHIFT,/* We've seen a complete locking-shift sequence. */ ISO_ESC_DESIGNATE, /* We've seen a complete designation sequence. */ ISO_ESC_DIRECTIONALITY,/* We've seen a complete ISO6429 directionality sequence. */ ISO_ESC_LITERAL /* We've seen a literal character ala escape-quoting. */ }; /* 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_ESC 0x1B /* escape */ #define ISO_CODE_DEL 0x7F /* delete */ #define ISO_CODE_SS2 0x8E /* single-shift-2 */ #define ISO_CODE_SS3 0x8F /* single-shift-3 */ #define ISO_CODE_CSI 0x9B /* control-sequence-introduce */ #endif /* MULE */ /* Distinguishable categories of encodings. This list determines the initial priority of the categories. For better or worse, currently Mule files are encoded in 7-bit ISO 2022. For this reason, under Mule ISO_7 gets highest priority. Putting NO_CONVERSION second prevents "binary corruption" in the default case in all but the (presumably) extremely rare case of a binary file which contains redundant escape sequences but no 8-bit characters. The remaining priorities are based on perceived "internationalization political correctness." An exception is UCS-4 at the bottom, since basically everything is compatible with UCS-4, but it is likely to be very rare as an external encoding. */ enum coding_category_type { /* must be a contiguous range of values 0 -- CODING_CATEGORY_LAST - 1 */ #ifdef MULE CODING_CATEGORY_ISO_7, /* ISO2022 system using only seven-bit bytes, no locking shift */ CODING_CATEGORY_NO_CONVERSION, CODING_CATEGORY_UTF8, CODING_CATEGORY_ISO_8_1, /* ISO2022 system using eight-bit bytes, no locking shift, no designation sequences, one-dimension characters in the upper half. */ CODING_CATEGORY_ISO_8_2, /* ISO2022 system using eight-bit bytes, no locking shift, no designation sequences, two-dimension characters in the upper half. */ CODING_CATEGORY_ISO_8_DESIGNATE, /* ISO2022 system using eight-bit bytes, no locking shift, no single shift, using designation to switch charsets */ CODING_CATEGORY_ISO_LOCK_SHIFT, /* ISO2022 system using locking shift */ CODING_CATEGORY_SHIFT_JIS, CODING_CATEGORY_BIG5, CODING_CATEGORY_UCS4, #else /* not MULE */ CODING_CATEGORY_NO_CONVERSION, #endif /* MULE */ CODING_CATEGORY_LAST /* not a real coding category */ }; #ifdef MULE #define CODING_CATEGORY_SHIFT_JIS_MASK \ (1 << CODING_CATEGORY_SHIFT_JIS) #define CODING_CATEGORY_ISO_7_MASK \ (1 << CODING_CATEGORY_ISO_7) #define CODING_CATEGORY_ISO_8_DESIGNATE_MASK \ (1 << CODING_CATEGORY_ISO_8_DESIGNATE) #define CODING_CATEGORY_ISO_8_1_MASK \ (1 << CODING_CATEGORY_ISO_8_1) #define CODING_CATEGORY_ISO_8_2_MASK \ (1 << CODING_CATEGORY_ISO_8_2) #define CODING_CATEGORY_ISO_LOCK_SHIFT_MASK \ (1 << CODING_CATEGORY_ISO_LOCK_SHIFT) #define CODING_CATEGORY_BIG5_MASK \ (1 << CODING_CATEGORY_BIG5) #define CODING_CATEGORY_UCS4_MASK \ (1 << CODING_CATEGORY_UCS4) #define CODING_CATEGORY_UTF8_MASK \ (1 << CODING_CATEGORY_UTF8) #endif #define CODING_CATEGORY_NO_CONVERSION_MASK \ (1 << CODING_CATEGORY_NO_CONVERSION) #define CODING_CATEGORY_NOT_FINISHED_MASK \ (1 << 30) #ifdef MULE /* Convert shift-JIS code (sj1, sj2) into internal string representation (c1, c2). (The leading byte is assumed.) */ #define DECODE_SJIS(sj1, sj2, c1, c2) \ do { \ int I1 = sj1, I2 = sj2; \ if (I2 >= 0x9f) \ c1 = (I1 << 1) - ((I1 >= 0xe0) ? 0xe0 : 0x60), \ c2 = I2 + 2; \ else \ c1 = (I1 << 1) - ((I1 >= 0xe0) ? 0xe1 : 0x61), \ c2 = I2 + ((I2 >= 0x7f) ? 0x60 : 0x61); \ } while (0) /* Convert the internal string representation of a Shift-JIS character (c1, c2) into Shift-JIS code (sj1, sj2). The leading byte is assumed. */ #define ENCODE_SJIS(c1, c2, sj1, sj2) \ do { \ int I1 = c1, I2 = c2; \ if (I1 & 1) \ sj1 = (I1 >> 1) + ((I1 < 0xdf) ? 0x31 : 0x71), \ sj2 = I2 - ((I2 >= 0xe0) ? 0x60 : 0x61); \ else \ sj1 = (I1 >> 1) + ((I1 < 0xdf) ? 0x30 : 0x70), \ sj2 = I2 - 2; \ } while (0) #endif /* MULE */ Lisp_Object make_decoding_input_stream (Lstream *stream, Lisp_Object codesys); Lisp_Object make_encoding_input_stream (Lstream *stream, Lisp_Object codesys); Lisp_Object make_decoding_output_stream (Lstream *stream, Lisp_Object codesys); Lisp_Object make_encoding_output_stream (Lstream *stream, Lisp_Object codesys); Lisp_Object decoding_stream_coding_system (Lstream *stream); Lisp_Object encoding_stream_coding_system (Lstream *stream); void set_decoding_stream_coding_system (Lstream *stream, Lisp_Object codesys); void set_encoding_stream_coding_system (Lstream *stream, Lisp_Object codesys); void determine_real_coding_system (Lstream *stream, Lisp_Object *codesys_in_out, eol_type_t *eol_type_in_out); #ifndef MULE #define MIN_LEADING_BYTE 0x80 /* These need special treatment in a string and/or character */ #ifdef ENABLE_COMPOSITE_CHARS #define LEADING_BYTE_COMPOSITE 0x80 /* for a composite character */ #endif #define LEADING_BYTE_CONTROL_1 0x8F /* represent normal 80-9F */ #define LEADING_BYTE_LATIN_ISO8859_1 0x81 /* Right half of ISO 8859-1 */ #define BYTE_C1_P(c) ((unsigned int) ((unsigned int) (c) - 0x80) < 0x20) #define BUFBYTE_FIRST_BYTE_P(c) ((c) < 0xA0) #define BUFBYTE_LEADING_BYTE_P(c) BYTE_C1_P (c) #endif /* not MULE */ #endif /* INCLUDED_file_coding_h_ */