shcmd.h revision 34f9b3eef6fdadbda0a846aa4d68691ac40eace5
/***********************************************************************
* *
* This software is part of the ast package *
* Copyright (c) 1985-2009 AT&T Intellectual Property *
* and is licensed under the *
* Common Public License, Version 1.0 *
* by AT&T Intellectual Property *
* *
* A copy of the License is available at *
* http://www.opensource.org/licenses/cpl1.0.txt *
* (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) *
* *
* Information and Software Systems Research *
* AT&T Research *
* Florham Park NJ *
* *
* Glenn Fowler <gsf@research.att.com> *
* David Korn <dgk@research.att.com> *
* Phong Vo <kpv@research.att.com> *
* *
***********************************************************************/
#pragma prototyped
/*
* ksh builtin command api
*/
#ifndef _SHCMD_H
#define _SHCMD_H 1
#ifndef SH_VERSION
# define Shell_t void
#endif
#ifndef NV_DEFAULT
# define Namval_t void
#endif
#ifndef ERROR_NOTIFY
# define ERROR_NOTIFY 1
#endif
typedef int (*Shbltin_f)(int, char**, void*);
#undef Shbltin_t
typedef struct Shbltin_s
{
Shell_t *shp;
void *ptr;
int version;
int (*shrun)(int, char**);
int (*shtrap)(const char*, int);
void (*shexit)(int);
Namval_t *(*shbltin)(const char*, Shbltin_f, void*);
unsigned char notify;
unsigned char sigset;
unsigned char nosfio;
Namval_t *bnode;
Namval_t *vnode;
char *data;
int flags;
char *(*shgetenv)(const char*);
char *(*shsetenv)(const char*);
int invariant;
} Shbltin_t;
#if defined(SH_VERSION) || defined(_SH_PRIVATE)
# undef Shell_t
# undef Namval_t
#else
# define sh_context(c) ((Shbltin_t*)(c))
# define sh_run(c, ac, av) ((c)?(*sh_context(c)->shrun)(ac,av):-1)
# define sh_system(c,str) ((c)?(*sh_context(c)->shtrap)(str,0):system(str))
# define sh_exit(c,n) ((c)?(*sh_context(c)->shexit)(n):exit(n))
# define sh_checksig(c) ((c) && sh_context(c)->sigset)
# if defined(SFIO_VERSION) || defined(_AST_H)
# define LIB_INIT(c)
# else
# define LIB_INIT(c) ((c) && (sh_context(c)->nosfio = 1))
# endif
# ifndef _CMD_H
# define cmdinit(ac,av,c,cat,flg) do { if((ac)<=0) return(0); \
(sh_context(c)->notify = ((flg)&ERROR_NOTIFY)?1:0);} while(0)
# endif
#endif
#if _BLD_ast && defined(__EXPORT__)
#define extern __EXPORT__
#endif
extern int astintercept(Shbltin_t*, int);
#undef extern
#endif