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GitHub Repository: att/ast
 Path: blob/master/src/lib/libast/include/shcmd.h
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/***********************************************************************

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*                                                                      *

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*               This software is part of the ast package               *

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*          Copyright (c) 1985-2012 AT&T Intellectual Property          *

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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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*                 Glenn Fowler <[email protected]>                  *

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*                  David Korn <[email protected]>                   *

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*                   Phong Vo <[email protected]>                    *

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*                                                                      *

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***********************************************************************/

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#pragma prototyped

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/*

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 * ksh builtin command api

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 */

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#ifndef _SHCMD_H

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#define _SHCMD_H	1

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#ifndef AST_PLUGIN_VERSION

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#define AST_PLUGIN_VERSION(v)	(v)

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#endif

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#define SH_PLUGIN_VERSION	AST_PLUGIN_VERSION(20111111L)

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#if __STDC__

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#define SHLIB(m)	unsigned long	plugin_version(void) { return SH_PLUGIN_VERSION; }

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#else

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#define SHLIB(m)	unsigned long	plugin_version() { return SH_PLUGIN_VERSION; }

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#endif

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#ifndef SH_VERSION

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#   define Shell_t	void

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#endif

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#ifndef NV_DEFAULT

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#   define Namval_t	void

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#endif

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#undef Shbltin_t

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struct Shbltin_s;

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typedef struct Shbltin_s Shbltin_t;

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#ifdef _SHTABLE_H /* pre-ksh93u+ -- obsolete */

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typedef int (*Shbltin_f)(int, char**, void*);

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#else

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typedef int (*Shbltin_f)(int, char**, Shbltin_t*);

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#endif /* _SHTABLE_H */

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struct Shbltin_s

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{

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	Shell_t*	shp;

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	void*		ptr;

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	int		version;

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	int		(*shrun)(int, char**);

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	int		(*shtrap)(const char*, int);

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	void		(*shexit)(int);

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	Namval_t*	(*shbltin)(const char*, Shbltin_f, void*);

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	unsigned char	notify;

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	unsigned char	sigset;

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	unsigned char	nosfio;

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	Namval_t*	bnode;

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	Namval_t*	vnode;

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	char*		data;

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	int		flags;

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	char*		(*shgetenv)(const char*);

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	char*		(*shsetenv)(const char*);

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	int		invariant;

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};

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#if defined(SH_VERSION) ||  defined(_SH_PRIVATE)

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#   undef Shell_t

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#   undef Namval_t

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#else 

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#   define sh_context(c)	((Shbltin_t*)(c))

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#   define sh_run(c, ac, av)	((c)?(*sh_context(c)->shrun)(ac,av):-1)

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#   define sh_system(c,str)	((c)?(*sh_context(c)->shtrap)(str,0):system(str))

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#   define sh_exit(c,n)		((c)?(*sh_context(c)->shexit)(n):exit(n))

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#   define sh_checksig(c)	((c) && sh_context(c)->sigset)

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#   define sh_builtin(c,n,f,p)	((c)?(*sh_context(c)->shbltin)(n,(Shbltin_f)(f),sh_context(p)):0)

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#   if defined(SFIO_VERSION) || defined(_AST_H)

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#	define LIB_INIT(c)

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#   else

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#	define LIB_INIT(c)	((c) && (sh_context(c)->nosfio = 1))

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#   endif

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#   ifndef _CMD_H

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#     ifndef ERROR_NOTIFY

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#       define ERROR_NOTIFY	1

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#     endif

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#     define cmdinit(ac,av,c,cat,flg)		do { if((ac)<=0) return(0); \

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	(sh_context(c)->notify = ((flg)&ERROR_NOTIFY)?1:0);} while(0)

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#   endif

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#endif

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#if _BLD_ast && defined(__EXPORT__)

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#define extern		__EXPORT__

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#endif

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extern int		astintercept(Shbltin_t*, int);

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#undef	extern

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#endif

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