WebSVN – HelenOS – Diff – /tags/0.3.0/uspace/app/ash/eval.h


/*  $NetBSD: eval.h,v 1.10 2000/01/27 23:39:40 christos Exp $   */
 
/*-
 * Copyright (c) 1991, 1993
 *  The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Kenneth Almquist.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *  This product includes software developed by the University of
 *  California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *  @(#)eval.h  8.2 (Berkeley) 5/4/95
 */
 
extern char *commandname;   /* currently executing command */
extern int exitstatus;      /* exit status of last command */
extern struct strlist *cmdenviron;  /* environment for builtin command */
 
 
struct backcmd {        /* result of evalbackcmd */
    int fd;         /* file descriptor to read from */
    char *buf;      /* buffer */
    int nleft;      /* number of chars in buffer */
    struct job *jp;     /* job structure for command */
};
 
int evalcmd (int, char **);
void evalstring (char *, int);
union node; /* BLETCH for ansi C */
void evaltree (union node *, int);
void evalbackcmd (union node *, struct backcmd *);
int bltincmd (int, char **);
int breakcmd (int, char **);
int returncmd (int, char **);
int falsecmd (int, char **);
int truecmd (int, char **);
int execcmd (int, char **);
int is_special_builtin (const char *);
 
/* in_function returns nonzero if we are currently evaluating a function */
#define in_function()   funcnest
extern int funcnest;
extern int evalskip;
 
/* reasons for skipping commands (see comment on breakcmd routine) */
#define SKIPBREAK   1
#define SKIPCONT    2
#define SKIPFUNC    3
#define SKIPFILE    4
 

Subversion Repositories HelenOS

(root)/tags/0.3.0/uspace/app/ash/eval.h – Rev 2714 → 2782

Rev 2714		Rev 2782
1	/* $NetBSD: eval.h,v 1.10 2000/01/27 23:39:40 christos Exp $ */	1	/* $NetBSD: eval.h,v 1.10 2000/01/27 23:39:40 christos Exp $ */
2		2
3	/*-	3	/*-
4	* Copyright (c) 1991, 1993	4	* Copyright (c) 1991, 1993
5	* The Regents of the University of California. All rights reserved.	5	* The Regents of the University of California. All rights reserved.
6	*	6	*
7	* This code is derived from software contributed to Berkeley by	7	* This code is derived from software contributed to Berkeley by
8	* Kenneth Almquist.	8	* Kenneth Almquist.
9	*	9	*
10	* Redistribution and use in source and binary forms, with or without	10	* Redistribution and use in source and binary forms, with or without
11	* modification, are permitted provided that the following conditions	11	* modification, are permitted provided that the following conditions
12	* are met:	12	* are met:
13	* 1. Redistributions of source code must retain the above copyright	13	* 1. Redistributions of source code must retain the above copyright
14	* notice, this list of conditions and the following disclaimer.	14	* notice, this list of conditions and the following disclaimer.
15	* 2. Redistributions in binary form must reproduce the above copyright	15	* 2. Redistributions in binary form must reproduce the above copyright
16	* notice, this list of conditions and the following disclaimer in the	16	* notice, this list of conditions and the following disclaimer in the
17	* documentation and/or other materials provided with the distribution.	17	* documentation and/or other materials provided with the distribution.
18	* 3. All advertising materials mentioning features or use of this software	18	* 3. All advertising materials mentioning features or use of this software
19	* must display the following acknowledgement:	19	* must display the following acknowledgement:
20	* This product includes software developed by the University of	20	* This product includes software developed by the University of
21	* California, Berkeley and its contributors.	21	* California, Berkeley and its contributors.
22	* 4. Neither the name of the University nor the names of its contributors	22	* 4. Neither the name of the University nor the names of its contributors
23	* may be used to endorse or promote products derived from this software	23	* may be used to endorse or promote products derived from this software
24	* without specific prior written permission.	24	* without specific prior written permission.
25	*	25	*
26	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND	26	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE	27	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE	28	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE	29	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL	30	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS	31	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)	32	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT	33	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY	34	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF	35	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36	* SUCH DAMAGE.	36	* SUCH DAMAGE.
37	*	37	*
38	* @(#)eval.h 8.2 (Berkeley) 5/4/95	38	* @(#)eval.h 8.2 (Berkeley) 5/4/95
39	*/	39	*/
40		40
41	extern char commandname; / currently executing command */	41	extern char commandname; / currently executing command */
42	extern int exitstatus; /* exit status of last command */	42	extern int exitstatus; /* exit status of last command */
43	extern struct strlist cmdenviron; / environment for builtin command */	43	extern struct strlist cmdenviron; / environment for builtin command */
44		44
45		45
46	struct backcmd { /* result of evalbackcmd */	46	struct backcmd { /* result of evalbackcmd */
47	int fd; /* file descriptor to read from */	47	int fd; /* file descriptor to read from */
48	char buf; / buffer */	48	char buf; / buffer */
49	int nleft; /* number of chars in buffer */	49	int nleft; /* number of chars in buffer */
50	struct job jp; / job structure for command */	50	struct job jp; / job structure for command */
51	};	51	};
52		52
53	int evalcmd (int, char **);	53	int evalcmd (int, char **);
54	void evalstring (char *, int);	54	void evalstring (char *, int);
55	union node; /* BLETCH for ansi C */	55	union node; /* BLETCH for ansi C */
56	void evaltree (union node *, int);	56	void evaltree (union node *, int);
57	void evalbackcmd (union node , struct backcmd );	57	void evalbackcmd (union node , struct backcmd );
58	int bltincmd (int, char **);	58	int bltincmd (int, char **);
59	int breakcmd (int, char **);	59	int breakcmd (int, char **);
60	int returncmd (int, char **);	60	int returncmd (int, char **);
61	int falsecmd (int, char **);	61	int falsecmd (int, char **);
62	int truecmd (int, char **);	62	int truecmd (int, char **);
63	int execcmd (int, char **);	63	int execcmd (int, char **);
64	int is_special_builtin (const char *);	64	int is_special_builtin (const char *);
65		65
66	/* in_function returns nonzero if we are currently evaluating a function */	66	/* in_function returns nonzero if we are currently evaluating a function */
67	#define in_function() funcnest	67	#define in_function() funcnest
68	extern int funcnest;	68	extern int funcnest;
69	extern int evalskip;	69	extern int evalskip;
70		70
71	/* reasons for skipping commands (see comment on breakcmd routine) */	71	/* reasons for skipping commands (see comment on breakcmd routine) */
72	#define SKIPBREAK 1	72	#define SKIPBREAK 1
73	#define SKIPCONT 2	73	#define SKIPCONT 2
74	#define SKIPFUNC 3	74	#define SKIPFUNC 3
75	#define SKIPFILE 4	75	#define SKIPFILE 4
76		76