mirror of
git://git.code.sf.net/p/cdesktopenv/code
synced 2025-03-09 15:50:02 +00:00
Multibyte character handling overhaul; allow global disable
The SHOPT_MULTIBYTE compile-time option did not make much sense as disabling it only disabled multibyte support for ksh/libshell, not libast or libcmd built-in commands. This commit allows disabling multibyte support for the entire codebase by defining the macro AST_NOMULTIBYTE (e.g. via CCFLAGS). This slightly speeds up the code and makes an optimised binary about 5% smaller. src/lib/libast/include/ast.h: - Add non-multibyte fallback versions of the multibyte macros that are used if AST_NOMULTIBYTE is defined. This should cause most multibyte handling to be automatically optimised out everywhere. - Reformat the multibyte macros for legibility. - Similify mbchar() and and mbsize() macros by defining them in terms of mbnchar() and mbnsize(), eliminating code duplication. - Correct non-multibyte fallback of mbwidth(). For consistent behaviour, control characters and out-of-range values should return -1 as they do for UTF-8. The fallback is now the same as default_wcwidth() in src/lib/libast/comp/setlocale.c. src/lib/libast/comp/setlocale.c: - If AST_NOMULTIBYTE is defined, do not compile in the debug and UTF-8 locale conversion functions, including several large conversion tables. Define their fallback macros as 0 as these are used as function pointers. src/cmd/ksh93/SHOPT.sh, src/cmd/ksh93/Mamfile: - Change the SHOPT_MULTIBYTE default to empty, indicating "probe". - Synchronise SHOPT_MULTIBYTE with !AST_NOMULTIBYTE by default. src/cmd/ksh93/include/defs.h: - When SHOPT_MULTIBYTE is zero but AST_NOMULTIBYTE is not non-zero, then enable AST_NOMULTIBYTE here to use the ast.h non-multibyte fallbacks for ksh. When this is done, the effect is that multibyte is optimized out for ksh only, as before. - Remove previous fallback for disabling multibyte (re:c2cb0eae). src/cmd/ksh93/include/lexstates.h, src/cmd/ksh93/sh/lex.c: - Define SETLEN() macro to assign to LEN (i.e. _Fcin.fclen) for multibyte only and do not assign to it directly. With no SHOPT_MULTIBYTE, define that macro as empty. This allows removing multiple '#if SHOPT_MULTIBYTE' directives from lex.c, as that code will all be optimised out automatically if it's disabled. src/cmd/ksh93/include/national.h, src/cmd/ksh93/sh/string.c: - Fix flagrantly incorrect non-multibyte fallback for sh_strchr(). The latter returns an integer offset (-1 if not found), whereas strchr(3) returns a char pointer (NULL if not found). Incorporate the fallback into the function for correct handling instead of falling back to strchr(3) directly. src/cmd/ksh93/sh/macro.c: - lastchar() optimisation: avoid function call if SHOPT_MULTIBYTE is enabled but we're not actually in a multibyte locale. src/cmd/ksh93/sh/name.c: - Use ja_size() even with SHOPT_MULTIBYTE disabled (re:2182ecfa). Though no regression tests failed, the non-multibyte fallback for typeset -L/-R/-Z length calculation was probably not quite correct as ja_size() does more. The ast.h change to mbwidth() ensures correct behaviour for non-multibyte locales. src/cmd/ksh93/tests/shtests: - Since its value in SHOPT.sh is now empty by default, add a quick feature test (for the length of the UTF-8 character 'é') to check if SHOPT_MULTIBYTE needs to be enabled for the regression tests.
This commit is contained in:
Martijn Dekker
parent
59e79dc026
commit
7c4418ccdc
16 changed files with 147 additions and 101 deletions
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@ -27,6 +27,12 @@ make install
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exec - SHOPT()
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exec - {
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exec - case $1 in
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exec - 'MULTIBYTE=')
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exec - echo
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exec - echo '#if !defined(SHOPT_MULTIBYTE) && !AST_NOMULTIBYTE'
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exec - echo '#define SHOPT_MULTIBYTE 1'
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exec - echo '#endif'
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exec - ;;
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exec - *=?*) echo
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exec - echo "#ifndef SHOPT_${1%%=*}"
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exec - echo "#define SHOPT_${1%%=*} ${1#*=}"
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@ -100,8 +100,9 @@ The options have the following defaults and meanings:
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As of 2021-05-10, no tool that can parse this database is
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known. If you know of any, please contact us.
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MULTIBYTE on Multibyte character handling. Requires mblen() and
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mbctowc().
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MULTIBYTE Multibyte character handling. This is on by default unless
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the flag -DAST_NOMULTIBYTE is passed to the compiler via
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CCFLAGS. The UTF-8 character set is fully supported.
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NAMESPACE on Adds a 'namespace' reserved word that allows defining name
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spaces. Variables and functions defined within a block like
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@ -191,6 +192,11 @@ Note: Do not add compiler flags that cause the compiler to emit terminal
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escape codes, such as -fdiagnostics-color=always; this will cause the build
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to fail as the probing code greps compiler diagnostics.
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If you are certain that you don't need support for UTF-8 and other multibyte
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character locales and really want to save some memory and CPU cycles, add
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'-DAST_NOMULTIBYTE' to CCFLAGS to compile out all multibyte character
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handling in ksh and supporting libraries. Not recommended for most users.
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For more information, run:
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bin/package help
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@ -25,7 +25,7 @@ SHOPT GLOBCASEDET= # -o globcasedetect: adapt globbing/completion to case-inse
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SHOPT HISTEXPAND=1 # csh-style history file expansions
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SHOPT KIA= # ksh -R <outfile> <script> generates cross-ref database from script
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SHOPT MKSERVICE=0 # enable the mkservice and eloop builtins
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SHOPT MULTIBYTE=1 # multibyte character handling
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SHOPT MULTIBYTE= # multibyte character handling
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SHOPT NAMESPACE=1 # allow namespaces
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SHOPT NOECHOE=0 # turn off 'echo -e' when SHOPT_ECHOPRINT is disabled
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SHOPT OLDTERMIO= # support both TCGETA and TCGETS
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@ -28,6 +28,12 @@
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#ifndef defs_h_defined
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#define defs_h_defined
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/* In case multibyte support was disabled for ksh only (SHOPT_MULTIBYTE==0) and not for libast */
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#if !SHOPT_MULTIBYTE && !AST_NOMULTIBYTE
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# undef AST_NOMULTIBYTE
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# define AST_NOMULTIBYTE 1
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#endif
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#include <ast.h>
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#if !defined(AST_VERSION) || AST_VERSION < 20220208
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#error libast version 20220208 or later is required
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@ -35,20 +41,9 @@
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#if !_lib_fork
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#error In 2021, ksh joined the 21st century and started requiring fork(2).
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#endif
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#if !SHOPT_MULTIBYTE
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/*
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* Disable multibyte without need for excessive '#if SHOPT_MULTIBYTE' preprocessor conditionals.
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* If we redefine the maximum character size mbmax() as 1 byte, the mbwide() macro will always
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* evaluate to 0. All the other multibyte macros have multibtye code conditional upon mbwide(),
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* so the compiler should optimize all of that code away. See src/lib/libast/include/ast.h
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*/
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# undef mbmax
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# define mbmax() 1
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#endif
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#include <sfio.h>
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#include <error.h>
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#include "shopt.h"
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#include "FEATURE/externs"
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#include "FEATURE/options"
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#include <cdt.h>
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@ -2,7 +2,7 @@
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* *
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* This software is part of the ast package *
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* Copyright (c) 1982-2011 AT&T Intellectual Property *
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* Copyright (c) 2020-2021 Contributors to ksh 93u+m *
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* Copyright (c) 2020-2022 Contributors to ksh 93u+m *
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* and is licensed under the *
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* Eclipse Public License, Version 1.0 *
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* by AT&T Intellectual Property *
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@ -45,6 +45,7 @@ typedef struct _fcin
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#if SHOPT_MULTIBYTE
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# define fcmbget(x) (mbwide()?_fcmbget(x):fcget())
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extern int _fcmbget(short*);
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#else
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# define fcmbget(x) (fcget())
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#endif
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@ -64,7 +65,6 @@ extern int fcfill(void);
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extern int fcfopen(Sfio_t*);
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extern int fcclose(void);
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void fcnotify(void(*)(Sfio_t*,const char*,int,void*),void*);
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extern int _fcmbget(short*);
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extern Fcin_t _Fcin; /* used by macros */
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@ -2,7 +2,7 @@
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* *
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* This software is part of the ast package *
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* Copyright (c) 1982-2011 AT&T Intellectual Property *
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* Copyright (c) 2020-2021 Contributors to ksh 93u+m *
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* Copyright (c) 2020-2022 Contributors to ksh 93u+m *
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* and is licensed under the *
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* Eclipse Public License, Version 1.0 *
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* by AT&T Intellectual Property *
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@ -107,14 +107,17 @@
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#endif
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#undef LEN
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#undef SETLEN
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#if SHOPT_MULTIBYTE
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# define LEN _Fcin.fclen
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# define SETLEN(x) (_Fcin.fclen = x)
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# define isaname(c) ((c)>0x7f?isalpha(c): sh_lexstates[ST_NAME][(c)]==0)
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# define isaletter(c) ((c)>0x7f?isalpha(c): sh_lexstates[ST_DOL][(c)]==S_ALP && (c)!='.')
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#else
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# undef mbwide
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# define mbwide() (0)
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# define LEN 1
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# define SETLEN(x) (x)
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# define isaname(c) (sh_lexstates[ST_NAME][c]==0)
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# define isaletter(c) (sh_lexstates[ST_DOL][c]==S_ALP && (c)!='.')
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#endif
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@ -2,7 +2,7 @@
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* *
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* This software is part of the ast package *
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* Copyright (c) 1982-2011 AT&T Intellectual Property *
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* Copyright (c) 2020-2021 Contributors to ksh 93u+m *
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* Copyright (c) 2020-2022 Contributors to ksh 93u+m *
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* and is licensed under the *
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* Eclipse Public License, Version 1.0 *
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* by AT&T Intellectual Property *
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@ -27,13 +27,9 @@
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*/
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#if SHOPT_MULTIBYTE
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# ifndef MARKER
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# define MARKER 0xdfff /* Must be invalid character */
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# endif
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extern int sh_strchr(const char*,const char*);
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#else
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# define sh_strchr(s,c) strchr(s,*(c))
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#endif /* SHOPT_MULTIBYTE */
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extern int sh_strchr(const char*,const char*);
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@ -151,6 +151,7 @@ extern void fcrestore(Fcin_t *fp)
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_Fcin = *fp;
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}
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#if SHOPT_MULTIBYTE
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int _fcmbget(short *len)
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{
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register int c;
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@ -168,3 +169,4 @@ int _fcmbget(short *len)
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}
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return(c);
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}
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#endif /* SHOPT_MULTIBYTE */
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@ -260,9 +260,7 @@ int sh_lex(Lex_t* lp)
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register int n, c, mode=ST_BEGIN, wordflags=0;
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int inlevel=lp->lexd.level, assignment=0, ingrave=0;
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int epatchar=0;
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#if SHOPT_MULTIBYTE
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LEN=1;
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#endif /* SHOPT_MULTIBYTE */
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SETLEN(1);
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if(lp->lexd.paren)
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{
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lp->lexd.paren = 0;
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@ -1819,18 +1817,15 @@ static int here_copy(Lex_t *lp,register struct ionod *iop)
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if(n!=S_NL)
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{
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/* skip over regular characters */
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#if SHOPT_MULTIBYTE
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do
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{
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if(fcleft()< MB_LEN_MAX && mbsize(fcseek(0))<0)
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if(mbsize(fcseek(0)) < 0 && fcleft() < MB_LEN_MAX)
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{
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n = S_EOF;
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LEN = -fcleft();
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SETLEN(-fcleft());
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break;
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}
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}
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#endif /* SHOPT_MULTIBYTE */
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while((n=STATE(state,c))==0);
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}
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if(n==S_EOF || !(c=fcget()))
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@ -1846,17 +1841,15 @@ static int here_copy(Lex_t *lp,register struct ionod *iop)
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if(!lp->lexd.dolparen && (c=sfwrite(sp,bufp,c))>0)
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iop->iosize += c;
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}
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#if SHOPT_MULTIBYTE
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if(LEN==0)
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LEN=1;
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SETLEN(1);
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if(LEN < 0)
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{
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n = LEN;
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c = fcmbget(&LEN);
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LEN += n;
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SETLEN(LEN + n);
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}
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else
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#endif /* SHOPT_MULTIBYTE */
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c = lexfill(lp);
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if(c<0)
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break;
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@ -1874,10 +1867,8 @@ static int here_copy(Lex_t *lp,register struct ionod *iop)
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sfputc(sp,'\\');
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}
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}
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#if SHOPT_MULTIBYTE
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if(LEN < 1)
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LEN = 1;
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#endif
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SETLEN(1);
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bufp = fcseek(-LEN);
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}
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else
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@ -105,7 +105,8 @@ static void endfield(Mac_t*,int);
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static char *mac_getstring(char*);
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static int charlen(const char*,int);
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#if SHOPT_MULTIBYTE
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static char *lastchar(const char*,const char*);
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# define lastchar(string,endstring) (mbwide() ? _lastchar(string,endstring) : (endstring))
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static char *_lastchar(const char*,const char*);
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#else
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# define lastchar(string,endstring) (endstring)
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#endif /* SHOPT_MULTIBYTE */
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@ -2570,7 +2571,7 @@ static int substring(register const char *string,size_t len,const char *pat,int
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}
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#if SHOPT_MULTIBYTE
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static char *lastchar(const char *string, const char *endstring)
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static char *_lastchar(const char *string, const char *endstring)
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{
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register char *str = (char*)string;
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register int c;
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@ -1549,12 +1549,10 @@ skip:
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return(np);
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}
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#if SHOPT_MULTIBYTE
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static int ja_size(char*, int, int);
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static void ja_restore(void);
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static char *savep;
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static char savechars[8+1];
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#endif /* SHOPT_MULTIBYTE */
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static int ja_size(char*, int, int);
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static void ja_restore(void);
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static char *savep;
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static char savechars[8+1];
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/*
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* put value <string> into name-value node <np>.
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@ -1863,22 +1861,8 @@ void nv_putval(register Namval_t *np, const char *string, int flags)
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for( ; *sp == '0'; sp++)
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;
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size = nv_size(np);
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#if SHOPT_MULTIBYTE
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if(size)
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size = ja_size((char*)sp,size,nv_isattr(np,NV_RJUST|NV_ZFILL));
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#else
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/* fallback: consider control characters to have zero width */
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if(size)
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{
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char *c = (char*)sp;
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int s = size;
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for( ; *c && s; c++)
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if(iscntrl(*c))
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size++;
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else
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s--;
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}
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#endif /* SHOPT_MULTIBYTE */
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}
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if(!up->cp || *up->cp==0)
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flags &= ~NV_APPEND;
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@ -2005,11 +1989,9 @@ void nv_putval(register Namval_t *np, const char *string, int flags)
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cp = cp+size;
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for (; dp < cp; *dp++ = ' ');
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}
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#if SHOPT_MULTIBYTE
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/* restore original string */
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if(savep)
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ja_restore();
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#endif /* SHOPT_MULTIBYTE */
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}
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if(flags&NV_APPEND)
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stakseek(offset);
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@ -2066,17 +2048,15 @@ static void rightjust(char *str, int size, int fill)
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return;
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}
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#if SHOPT_MULTIBYTE
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/*
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* handle left and right justified fields for multi-byte chars
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* given physical size, return a logical size which reflects the
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* screen width of multi-byte characters
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* Multi-width characters replaced by spaces if they cross the boundary
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* <type> is non-zero for right justified fields
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*/
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/*
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* Handle left and right justified fields for multibyte characters.
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* Given physical size, return a logical size that reflects the screen width.
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* Multi-width characters are replaced by spaces if they cross the boundary.
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* <type> is non-zero for right-justified fields.
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*/
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static int ja_size(char *str,int size,int type)
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{
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static int ja_size(char *str,int size,int type)
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{
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register char *cp = str;
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register int c, n=size;
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register int outsize;
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@ -2118,16 +2098,15 @@ static void rightjust(char *str, int size, int fill)
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n -= (ja_size(str,size,0)-size);
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}
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return(n);
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}
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}
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static void ja_restore(void)
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{
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static void ja_restore(void)
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{
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register char *cp = savechars;
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while(*cp)
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*savep++ = *cp++;
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savep = 0;
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}
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#endif /* SHOPT_MULTIBYTE */
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}
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static char *staknam(register Namval_t *np, char *value)
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{
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@ -659,11 +659,17 @@ char *sh_fmtqf(const char *string, int single, int fold)
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return(stakptr(offset));
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}
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#if SHOPT_MULTIBYTE
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int sh_strchr(const char *string, register const char *dp)
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/*
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* Find a multi-byte character in a string.
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* NOTE: Unlike strchr(3), the return value is an integer offset or -1 if not found.
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*/
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int sh_strchr(const char *string, register const char *dp)
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{
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const char *cp;
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if(mbwide())
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{
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wchar_t c, d;
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register const char *cp=string;
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cp = string;
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mbinit();
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d = mbchar(dp);
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mbinit();
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@ -676,7 +682,9 @@ char *sh_fmtqf(const char *string, int single, int fold)
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return(cp-string);
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return(-1);
|
||||
}
|
||||
#endif /* SHOPT_MULTIBYTE */
|
||||
cp = strchr(string,*dp);
|
||||
return(cp ? cp-string : -1);
|
||||
}
|
||||
|
||||
const char *_sh_translate(const char *message)
|
||||
{
|
||||
|
|
|
|||
|
|
@ -476,7 +476,17 @@ typeset -l x=
|
|||
|
||||
unset x
|
||||
typeset -L4 x=$'\001abcdef'
|
||||
[[ ${#x} == 5 ]] || err_exit "width of character '\001' is not zero"
|
||||
exp=$'\001abcd'
|
||||
[[ e=${#x} -eq 5 && $x == "$exp" ]] || err_exit "typeset -L: width of control character '\001' is not zero" \
|
||||
"(expected length 5 and $(printf %q "$exp"), got length $e and $(printf %q "$x"))"
|
||||
typeset -R10 x=$'a\tb'
|
||||
exp=$' a\tb'
|
||||
[[ e=${#x} -eq 11 && $x == "$exp" ]] || err_exit "typeset -R: width of control character '\t' is not zero" \
|
||||
"(expected length 11 and $(printf %q "$exp"), got length $e and $(printf %q "$x"))"
|
||||
typeset -Z10 x=$'1\t2'
|
||||
exp=$'000000001\t2'
|
||||
[[ e=${#x} -eq 11 && $x == "$exp" ]] || err_exit "typeset -Z: width of control character '\t' is not zero" \
|
||||
"(expected length 11 and $(printf %q "$exp"), got length $e and $(printf %q "$x"))"
|
||||
|
||||
unset x
|
||||
typeset -L x=-1
|
||||
|
|
|
|||
|
|
@ -312,8 +312,9 @@ SHOPT()
|
|||
}
|
||||
. "${SHOPTFILE:-../SHOPT.sh}"
|
||||
unset -f SHOPT
|
||||
[[ -n $SHOPT_MULTIBYTE ]] || SHOPT_MULTIBYTE=$( LC_ALL=C.UTF-8; x=$'\xc3\xa9'; print $(( ${#x}==1 )) )
|
||||
if (( !SHOPT_MULTIBYTE && utf8 && !posix && !compile ))
|
||||
then echo "The -u/--utf8 option is unavailable as SHOPT_MULTIBYTE is turned off in ${SHOPTFILE:-SHOPT.sh}." >&2
|
||||
then echo "-u/--utf8 is unavailable because multibyte support was not compiled in." >&2
|
||||
exit 1
|
||||
fi
|
||||
|
||||
|
|
|
|||
|
|
@ -232,6 +232,8 @@ native_setlocale(int category, const char* locale)
|
|||
#define DZ (DB-DX*DC+1) /* wchar_t embedded size bits */
|
||||
#define DD 3 /* # mb delimiter chars <n...> */
|
||||
|
||||
#if !AST_NOMULTIBYTE
|
||||
|
||||
static unsigned char debug_order[] =
|
||||
{
|
||||
0, 1, 2, 3, 4, 5, 6, 7,
|
||||
|
|
@ -490,6 +492,18 @@ debug_strcoll(const char* a, const char* b)
|
|||
return strcmp(ab, bb);
|
||||
}
|
||||
|
||||
#else
|
||||
|
||||
#define debug_mbtowc 0
|
||||
#define debug_wctomb 0
|
||||
#define debug_mblen 0
|
||||
#define debug_wcwidth 0
|
||||
#define debug_alpha 0
|
||||
#define debug_strxfrm 0
|
||||
#define debug_strcoll 0
|
||||
|
||||
#endif /* !AST_NOMULTIBYTE */
|
||||
|
||||
/*
|
||||
* default locale
|
||||
*/
|
||||
|
|
@ -529,7 +543,7 @@ set_collate(Lc_category_t* cp)
|
|||
* workaround the interesting SJIS that translates unshifted 7 bit ASCII!
|
||||
*/
|
||||
|
||||
#if _hdr_wchar && _typ_mbstate_t && _lib_mbrtowc
|
||||
#if _hdr_wchar && _typ_mbstate_t && _lib_mbrtowc && !AST_NOMULTIBYTE
|
||||
|
||||
#define mb_state_zero ((mbstate_t*)&ast.pad[sizeof(ast.pad)-2*sizeof(mbstate_t)])
|
||||
#define mb_state ((mbstate_t*)&ast.pad[sizeof(ast.pad)-sizeof(mbstate_t)])
|
||||
|
|
@ -547,6 +561,8 @@ sjis_mbtowc(register wchar_t* p, register const char* s, size_t n)
|
|||
|
||||
#endif
|
||||
|
||||
#if !AST_NOMULTIBYTE
|
||||
|
||||
static int
|
||||
utf8_wctomb(char* u, wchar_t w)
|
||||
{
|
||||
|
|
@ -593,8 +609,6 @@ utf8_mbtowc(wchar_t* wp, const char* str, size_t n)
|
|||
register int c;
|
||||
register wchar_t w = 0;
|
||||
|
||||
if (!wp && !sp)
|
||||
ast.mb_sync = 0; /* assume call from mbinit() macro: reset global multibyte sync state */
|
||||
if (!sp || !n)
|
||||
return 0;
|
||||
if ((m = utf8tab[*sp]) > 0)
|
||||
|
|
@ -2196,6 +2210,16 @@ utf8_alpha(wchar_t c)
|
|||
return !!(utf8_wam[(c >> 3) & 0x1fff] & (1 << (c & 0x7)));
|
||||
}
|
||||
|
||||
#else
|
||||
|
||||
#define utf8_wctomb 0
|
||||
#define utf8_mbtowc 0
|
||||
#define utf8_mblen 0
|
||||
#define utf8_wcwidth 0
|
||||
#define utf8_alpha 0
|
||||
|
||||
#endif /* !AST_NOMULTIBYTE */
|
||||
|
||||
#if !_hdr_wchar || !_lib_wctype || !_lib_iswctype
|
||||
#undef iswalpha
|
||||
#define iswalpha default_iswalpha
|
||||
|
|
|
|||
|
|
@ -208,22 +208,46 @@ typedef struct
|
|||
* multibyte macros
|
||||
*/
|
||||
|
||||
#define mbmax() (ast.mb_cur_max)
|
||||
#define mberr() (ast.tmp_int<0)
|
||||
#if !AST_NOMULTIBYTE
|
||||
|
||||
#define mbcoll() (ast.mb_xfrm!=0)
|
||||
#define mbwide() (mbmax()>1)
|
||||
#define mbmax() ( ast.mb_cur_max )
|
||||
#define mberr() ( ast.tmp_int < 0 )
|
||||
|
||||
#define mb2wc(w,p,n) (*ast.mb_towc)(&w,(char*)p,n)
|
||||
#define mbchar(p) (mbwide()?((ast.tmp_int=(*ast.mb_towc)(&ast.tmp_wchar,(char*)(p),mbmax()))>0?((p+=ast.tmp_int),ast.tmp_wchar):(p+=ast.mb_sync+1,ast.tmp_int)):(*(unsigned char*)(p++)))
|
||||
#define mbnchar(p,n) (mbwide()?((ast.tmp_int=(*ast.mb_towc)(&ast.tmp_wchar,(char*)(p),n))>0?((p+=ast.tmp_int),ast.tmp_wchar):(p+=ast.mb_sync+1,ast.tmp_int)):(*(unsigned char*)(p++)))
|
||||
#define mbinit() (mbwide()?(*ast.mb_towc)((wchar_t*)0,(char*)0,mbmax()):0)
|
||||
#define mbsize(p) (mbwide()?(*ast.mb_len)((char*)(p),mbmax()):((p),1))
|
||||
#define mbnsize(p,n) (mbwide()?(*ast.mb_len)((char*)(p),n):((p),1))
|
||||
#define mbconv(s,w) (ast.mb_conv?(*ast.mb_conv)(s,w):((*(s)=(w)),1))
|
||||
#define mbwidth(w) (ast.mb_width?(*ast.mb_width)(w):1)
|
||||
#define mbxfrm(t,f,n) (mbcoll()?(*ast.mb_xfrm)((char*)(t),(char*)(f),n):0)
|
||||
#define mbalpha(w) (ast.mb_alpha?(*ast.mb_alpha)(w):isalpha((w)&0xff))
|
||||
#define mbcoll() ( ast.mb_xfrm != 0 )
|
||||
#define mbwide() ( mbmax() > 1 )
|
||||
|
||||
#define mb2wc(w,p,n) ( *ast.mb_towc)(&w, (char*)p, n )
|
||||
#define mbchar(p) mbnchar(p, mbmax())
|
||||
#define mbnchar(p,n) ( mbwide() ? ( (ast.tmp_int = (*ast.mb_towc)(&ast.tmp_wchar, (char*)(p), n)) > 0 ? \
|
||||
( (p+=ast.tmp_int),ast.tmp_wchar) : (p+=ast.mb_sync+1,ast.tmp_int) ) : (*(unsigned char*)(p++)) )
|
||||
#define mbinit() ( ast.mb_sync = 0 )
|
||||
#define mbsize(p) mbnsize(p, mbmax())
|
||||
#define mbnsize(p,n) ( mbwide() ? (*ast.mb_len)((char*)(p), n) : ((p), 1) )
|
||||
#define mbconv(s,w) ( ast.mb_conv ? (*ast.mb_conv)(s,w) : ((*(s)=(w)), 1) )
|
||||
#define mbwidth(w) ( ast.mb_width ? (*ast.mb_width)(w) : (w >= 0 && w <= 255 && !iscntrl(w) ? 1 : -1) )
|
||||
#define mbxfrm(t,f,n) ( mbcoll() ? (*ast.mb_xfrm)((char*)(t), (char*)(f), n) : 0 )
|
||||
#define mbalpha(w) ( ast.mb_alpha ? (*ast.mb_alpha)(w) : isalpha((w) & 0xff) )
|
||||
|
||||
#else
|
||||
|
||||
#define mbmax() 1
|
||||
#define mberr() 0
|
||||
|
||||
#define mbcoll() 0
|
||||
#define mbwide() 0
|
||||
|
||||
#define mb2wc(w,p,n) ( (w) = *(unsigned char*)(p), 1 )
|
||||
#define mbchar(p) ( *(unsigned char*)(p++) )
|
||||
#define mbnchar(p,n) mbchar(p)
|
||||
#define mbinit() 0
|
||||
#define mbsize(p) 1
|
||||
#define mbnsize(p,n) 1
|
||||
#define mbconv(s,w) ( (*(s)=(w)), 1 )
|
||||
#define mbwidth(w) ( w >= 0 && w <= 255 && !iscntrl(w) ? 1 : -1 )
|
||||
#define mbxfrm(t,f,n) 0
|
||||
#define mbalpha(w) ( isalpha((w) & 0xff) )
|
||||
|
||||
#endif /* !AST_NOMULTIBYTE */
|
||||
|
||||
/*
|
||||
* common macros
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue