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git://git.code.sf.net/p/cdesktopenv/code
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a1f5c99204
This takes another step towards cleaning up the build system. We now do not even pretend to be theoretically compatible with pre-1989 K&R C compilers or with C++ compilers. In practice, this had already been broken for many years due to bit rot. Commit46593a89already removed the license handling enormity that depended on proto, so now we can cleanly remove it altogether. But we do need to leave some backwards compatibility stubs to keep the build system compatible with older AST code; it should remain possible to build older ksh versions with the current build system (the bin/ and src/cmd/INIT/ directories) for testing purposes. So as of now there is no more __MANGLE__d rubbish in your generated header files. This is only about a quarter of a century overdue... This commit also includes a huge amount of code cleanup to remove thousands of unused K&R C fallbacks and other cruft, particularly in libast. This code base should now be a little easier to understand for people who are familiar with a modern(ish) C standard. ratz is now also removed; this was a standalone and simplified 2005 version of gunzip. As of6137b99a, none of our code uses it, even theoretically. And the real g(un)zip is now everywhere. src/cmd/INIT/proto.c, src/cmd/INIT/ratz.c: - Removed. COPYRIGHT: - Remove zlib license; this only applied to ratz. bin/package, src/cmd/INIT/package.sh: - Related cleanups. - Unset LC_ALL before invoking a new shell, respecting the user's locale again and avoiding multibyte character corruption on the command line. src/cmd/INIT/proto.sh: - Add stub for backwards compatibility with Mamfiles that depend on proto. It does nothing but pass input without modification and is now installed as the new arch/*/bin/proto by src/cmd/INIT/Mamfile. src/cmd/INIT/iffe.sh: - Ignore the proto-related -e (--package) and -p (--prototyped) options; keep parsing them for backwards compatibility. - Trim the macros passed to every test to their standard C versions, removing K&R C and C++ versions. These are now considered to be for backwards compatibility only. src/cmd/INIT/iffe.tst: - Remove proto(1) mangling code. By the way, iffe can be regression-tested as follows: $ bin/package use # set up environment in a child shell $ regress src/cmd/INIT/iffe.tst $ exit # leave package environment src/cmd/INIT/make.probe, src/cmd/INIT/probe.win32: - Remove code to handle C++. src/lib/libast/features/common: - As in iffe.sh above, trim macros designed for compatibility with C++ and ancient C compilers to their standard C versions and comment that they are for backwards compatibility with AST code. This is needed to keep all the old ast and ksh code compiling. src/cmd/ksh93/sh/init.c, src/cmd/ksh93/sh/name.c: - Clarify libshell ABI compatibility function versions of macros. A "proto workaround" comment in the original code mislead me into thinking this had something to do with the removed proto(1), but it's unrelated. Call the workaround macro BYPASS_MACRO instead. src/cmd/ksh93/include/defs.h: - sh_sigcheck() macro: allow &sh as an argument: parenthesise shp. src/cmd/ksh93/sh/nvtype.c: - Remove unused nv_mkstruct() function. (re:d0a5cab1) **/features/*: - Remove obsolete iffe 'set prototyped' option. **/Mamfile: - Remove all references to the ast/prototyped.h header. - Remove all use of the proto command. Simply copy instead. *** 850-ish source files: *** - Remove all '#pragma prototyped' directives. - Remove all C++ compat code conditional upon defined(__cplusplus). - Remove all use of the _ARG_ macro, which on standard C expands to its argument: #define _ARG_(x) x (on K&R C, it expanded to nothing) - Remove all use of _BEGIN_EXTERNS_ and _END_EXTERNS_ macros (empty on standard C; this was for C++ compatibility) - Reduce all #if __STD_C (standard code) #else (K&R code) #endif blocks to the standard code only, without use of the macro. - Same for _STD_ macro which seems to have had the same function. - Change all instances of 'Void_t' to standard 'void'.
150 lines
5.2 KiB
C
150 lines
5.2 KiB
C
/***********************************************************************
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* *
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* This software is part of the ast package *
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* Copyright (c) 1982-2012 AT&T Intellectual Property *
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* Copyright (c) 2020-2021 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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* *
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* A copy of the License is available at *
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* http://www.eclipse.org/org/documents/epl-v10.html *
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* (with md5 checksum b35adb5213ca9657e911e9befb180842) *
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* *
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* Information and Software Systems Research *
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* AT&T Research *
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* Florham Park NJ *
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* *
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* David Korn <dgk@research.att.com> *
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* *
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***********************************************************************/
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#ifndef PATH_OFFSET
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/*
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* UNIX shell path handling interface
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* Written by David Korn
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* These are the definitions for the lexical analyzer
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*/
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#include "FEATURE/options"
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#include <nval.h>
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#include "defs.h"
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#if !defined(SHOPT_SPAWN)
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# if _UWIN || _use_spawnveg
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# define SHOPT_SPAWN 1
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# endif
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#endif /* !SHOPT_SPAWN */
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#define PATH_PATH 0001
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#define PATH_FPATH 0002
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#define PATH_CDPATH 0004
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#define PATH_BFPATH 0010
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#define PATH_SKIP 0020
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#define PATH_BUILTIN_LIB 0040
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#define PATH_STD_DIR 0100 /* directory is on $(getconf PATH) */
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#define PATH_OFFSET 2 /* path offset for path_join */
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#define MAXDEPTH (sizeof(char*)==2?64:1024) /* maximum recursion depth */
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/*
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* path component structure for path searching
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*/
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typedef struct pathcomp
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{
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struct pathcomp *next;
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int refcount;
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dev_t dev;
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ino_t ino;
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time_t mtime;
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char *name;
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char *lib;
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char *bbuf;
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char *blib;
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unsigned short len;
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unsigned short flags;
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Shell_t *shp;
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} Pathcomp_t;
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#ifndef ARG_RAW
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struct argnod;
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#endif /* !ARG_RAW */
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/* pathname handling routines */
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extern void path_newdir(Shell_t*,Pathcomp_t*);
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extern Pathcomp_t *path_dirfind(Pathcomp_t*,const char*,int);
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extern Pathcomp_t *path_unsetfpath(Shell_t*);
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extern Pathcomp_t *path_addpath(Shell_t*,Pathcomp_t*,const char*,int);
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extern Pathcomp_t *path_dup(Pathcomp_t*);
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extern void path_delete(Pathcomp_t*);
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extern void path_alias(Namval_t*,Pathcomp_t*);
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extern Pathcomp_t *path_absolute(Shell_t*, const char*, Pathcomp_t*, int);
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extern char *path_basename(const char*);
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extern char *path_fullname(Shell_t*,const char*);
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extern int path_expand(Shell_t*,const char*, struct argnod**);
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extern noreturn void path_exec(Shell_t*,const char*,char*[],struct argnod*);
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extern pid_t path_spawn(Shell_t*,const char*,char*[],char*[],Pathcomp_t*,int);
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#if defined(__EXPORT__) && defined(_BLD_DLL)
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# define extern __EXPORT__
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#endif
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extern int path_open(Shell_t*,const char*,Pathcomp_t*);
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extern Pathcomp_t *path_get(Shell_t*,const char*);
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#undef extern
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extern char *path_pwd(Shell_t*,int);
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extern Pathcomp_t *path_nextcomp(Shell_t*,Pathcomp_t*,const char*,Pathcomp_t*);
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extern int path_search(Shell_t*,const char*,Pathcomp_t**,int);
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extern char *path_relative(Shell_t*,const char*);
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extern int path_complete(Shell_t*,const char*, const char*,struct argnod**);
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#if SHOPT_BRACEPAT
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extern int path_generate(Shell_t*,struct argnod*,struct argnod**);
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#endif /* SHOPT_BRACEPAT */
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extern int path_xattr(Shell_t*, const char*, char*);
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/* builtin/plugin routines */
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extern int sh_addlib(Shell_t*,void*,char*,Pathcomp_t*);
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extern Shbltin_f sh_getlib(Shell_t*,char*,Pathcomp_t*);
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/* constant strings needed for whence */
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extern const char e_timeformat[];
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extern const char e_badtformat[];
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extern const char e_dot[];
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extern const char e_funload[];
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#if SHOPT_PFSH
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extern const char e_pfsh[];
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#endif
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extern const char e_pwd[];
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extern const char e_logout[];
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extern const char e_alphanum[];
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extern const char e_mailmsg[];
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extern const char e_suidprofile[];
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extern const char e_sysprofile[];
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extern const char e_traceprompt[];
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#if SHOPT_SUID_EXEC
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extern const char e_suidexec[];
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#endif /* SHOPT_SUID_EXEC */
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extern const char is_alias[];
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extern const char is_builtin[];
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extern const char is_spcbuiltin[];
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extern const char is_builtver[];
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extern const char is_reserved[];
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extern const char is_talias[];
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extern const char is_function[];
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extern const char is_ufunction[];
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extern const char e_autoloadfrom[];
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#ifdef SHELLMAGIC
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extern const char e_prohibited[];
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#endif /* SHELLMAGIC */
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#if SHOPT_ACCT
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# include "FEATURE/acct"
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# ifdef _sys_acct
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extern void sh_accinit(void);
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extern void sh_accbegin(const char*);
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extern void sh_accend(void);
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extern void sh_accsusp(void);
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# else
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# undef SHOPT_ACCT
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# endif /* _sys_acct */
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#endif /* SHOPT_ACCT */
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#endif /*! PATH_OFFSET */
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