1/***********************************************************************
2*                                                                      *
3*               This software is part of the ast package               *
4*          Copyright (c) 1992-2010 AT&T Intellectual Property          *
5*                      and is licensed under the                       *
6*                  Common Public License, Version 1.0                  *
7*                    by AT&T Intellectual Property                     *
8*                                                                      *
9*                A copy of the License is available at                 *
10*            http://www.opensource.org/licenses/cpl1.0.txt             *
11*         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
12*                                                                      *
13*              Information and Software Systems Research               *
14*                            AT&T Research                             *
15*                           Florham Park NJ                            *
16*                                                                      *
17*                 Glenn Fowler <gsf@research.att.com>                  *
18*                  David Korn <dgk@research.att.com>                   *
19*                                                                      *
20***********************************************************************/
21#pragma prototyped
22/*
23 * AT&T Research
24 *
25 * builtin cmd definitions
26 */
27
28#ifndef _CMD_H
29#define _CMD_H
30
31#include <ast.h>
32#include <error.h>
33#include <stak.h>
34#include <shcmd.h>
35
36#define cmdinit			_cmd_init
37
38#define ERROR_CALLBACK		ERROR_SET
39
40#if _BLD_cmd && defined(__EXPORT__)
41#define extern		__EXPORT__
42#endif
43
44#include <cmdext.h>
45
46#undef	extern
47
48#if defined(CMD_BUILTIN) && !defined(CMD_STANDALONE)
49#define CMD_STANDALONE	CMD_BUILTIN
50#endif
51
52#ifdef CMD_STANDALONE
53
54#define CMD_CONTEXT(c)		((Shbltin_t*)0)
55
56#if CMD_DYNAMIC
57
58#include <dlldefs.h>
59
60#else
61
62extern int CMD_STANDALONE(int, char**, void*);
63
64#endif
65
66#ifndef CMD_BUILTIN
67
68/*
69 * command initialization
70 */
71
72static int
73cmdinit(int argc, register char** argv, void* context, const char* catalog, int flags)
74{
75	register char*	cp;
76	register char*	pp;
77
78	if (cp = strrchr(argv[0], '/'))
79		cp++;
80	else
81		cp = argv[0];
82	if (pp = strrchr(cp, '_'))
83		cp = pp + 1;
84	error_info.id = cp;
85	if (!error_info.catalog)
86		error_info.catalog = (char*)catalog;
87	opt_info.index = 0;
88	if (context)
89		error_info.flags |= flags & ~(ERROR_CALLBACK|ERROR_NOTIFY);
90	return 0;
91}
92
93#endif
94
95int
96main(int argc, char** argv)
97{
98#if CMD_DYNAMIC
99	register char*	s;
100	register char*	t;
101	void*		dll;
102	Shbltin_f	fun;
103	char		buf[64];
104
105	if (s = strrchr(argv[0], '/'))
106		s++;
107	else if (!(s = argv[0]))
108		return 127;
109	if ((t = strrchr(s, '_')) && *++t)
110		s = t;
111	buf[0] = '_';
112	buf[1] = 'b';
113	buf[2] = '_';
114	strncpy(buf + 3, s, sizeof(buf) - 4);
115	buf[sizeof(buf) - 1] = 0;
116	if (t = strchr(buf, '.'))
117		*t = 0;
118	for (;;)
119	{
120		if (dll = dlopen(NiL, RTLD_LAZY))
121		{
122			if (fun = (Shbltin_f)dlsym(dll, buf + 1))
123				break;
124			if (fun = (Shbltin_f)dlsym(dll, buf))
125				break;
126		}
127		if (dll = dllplug(NiL, "cmd", NiL, RTLD_LAZY, NiL, 0))
128		{
129			if (fun = (Shbltin_f)dlsym(dll, buf + 1))
130				break;
131			if (fun = (Shbltin_f)dlsym(dll, buf))
132				break;
133		}
134		return 127;
135	}
136	return (*fun)(argc, argv, NiL);
137#else
138	return CMD_STANDALONE(argc, argv, NiL);
139#endif
140}
141
142#else
143
144#undef	cmdinit
145#ifdef _MSC_VER
146#define CMD_CONTEXT(p)		((Shbltin_t*)(p))
147#define cmdinit(a,b,c,d,e)	do{if(_cmd_init(a,b,c,d,e))return -1;}while(0)
148#else
149#define CMD_CONTEXT(p)		(((p)&&((Shbltin_t*)(p))->version>=20071012&&((Shbltin_t*)(p))->version<20350101)?((Shbltin_t*)(p)):0)
150#define cmdinit(a,b,c,d,e)	do{if((c)&&!CMD_CONTEXT(c))c=0;if(_cmd_init(a,b,c,d,e))return -1;}while(0)
151#endif
152
153#if _BLD_cmd && defined(__EXPORT__)
154#define extern			extern __EXPORT__
155#endif
156
157extern int	_cmd_init(int, char**, void*, const char*, int);
158
159#undef	extern
160
161#endif
162
163#endif
164