1/***********************************************************************
2*                                                                      *
3*               This software is part of the ast package               *
4*          Copyright (c) 1985-2012 AT&T Intellectual Property          *
5*                      and is licensed under the                       *
6*                 Eclipse Public License, Version 1.0                  *
7*                    by AT&T Intellectual Property                     *
8*                                                                      *
9*                A copy of the License is available at                 *
10*          http://www.eclipse.org/org/documents/epl-v10.html           *
11*         (with md5 checksum b35adb5213ca9657e911e9befb180842)         *
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*                   Phong Vo <kpv@research.att.com>                    *
20*                                                                      *
21***********************************************************************/
22#pragma prototyped
23/*
24 * Glenn Fowler
25 * AT&T Research
26 *
27 * option, error and message formatter external definitions
28 */
29
30#ifndef _ERROR_H
31#define _ERROR_H
32
33#include <ast.h>
34#include <option.h>
35#include <errno.h>
36
37#define ERROR_VERSION	20070319L
38
39#if !defined(errno) && defined(__DYNAMIC__)
40#define errno		__DYNAMIC__(errno)
41#endif
42
43#define ERROR_debug(n)	(-(n))
44#define ERROR_exit(n)	((n)+ERROR_ERROR)
45#define ERROR_system(n)	(((n)+ERROR_ERROR)|ERROR_SYSTEM)
46#define ERROR_usage(n)	((((n)?2:0)+ERROR_ERROR)|ERROR_USAGE)
47#define ERROR_warn(n)	(ERROR_WARNING)
48
49#ifndef ERROR_catalog
50#define ERROR_catalog(t)		t
51#endif
52#ifndef ERROR_dictionary
53#define ERROR_dictionary(t)		t
54#endif
55
56#ifndef ERROR_translate
57#define ERROR_translating()		(error_info.translate&&(ast.locale.set&(1<<AST_LC_MESSAGES)))
58#define ERROR_translate(l,i,d,m)	(ERROR_translating()?errorx((const char*)(l),(const char*)(i),(const char*)(d),(const char*)(m)):(char*)(m))
59#endif
60
61#define ERROR_INFO	0		/* info message -- no err_id	*/
62#define ERROR_WARNING	1		/* warning message		*/
63#define ERROR_ERROR	2		/* error message -- no err_exit	*/
64#define ERROR_FATAL	3		/* error message with err_exit	*/
65#define ERROR_NOEXEC	EXIT_NOEXEC	/* shell convention		*/
66#define ERROR_NOENT	EXIT_NOTFOUND	/* shell convention		*/
67#define ERROR_PANIC	ERROR_LEVEL	/* panic message with err_exit	*/
68
69#define ERROR_LEVEL	0x00ff		/* level portion of status	*/
70#define ERROR_SYSTEM	0x0100		/* report system errno message	*/
71#define ERROR_OUTPUT	0x0200		/* next arg is error fd		*/
72#define ERROR_SOURCE	0x0400		/* next 2 args are FILE,LINE	*/
73#define ERROR_USAGE	0x0800		/* usage message		*/
74#define ERROR_PROMPT	0x1000		/* omit trailing newline	*/
75#define ERROR_NOID	0x2000		/* omit err_id			*/
76#define ERROR_LIBRARY	0x4000		/* library routine error	*/
77
78#define ERROR_INTERACTIVE	0x0001	/* context is interactive	*/
79#define ERROR_SILENT		0x0002	/* context is silent		*/
80#define ERROR_NOTIFY		0x0004	/* main(-sig,0,ctx) on signal	*/
81
82#define ERROR_FREE		0x0010	/* free context on pop		*/
83#define ERROR_POP		0x0020	/* pop context			*/
84#define ERROR_PUSH		0x0040	/* push context			*/
85#define ERROR_SET		0x0080	/* set context			*/
86
87#ifdef ECONNRESET
88#define ERROR_PIPE(e)		((e)==EPIPE||(e)==ECONNRESET)
89#else
90#define ERROR_PIPE(e)		((e)==EPIPE)
91#endif
92
93/*
94 * errorpush()/errorpop() are obsolete -- use errorctx() instead
95 */
96
97#ifndef ERROR_CONTEXT_T
98#define ERROR_CONTEXT_T		Error_info_t
99#endif
100
101#define ERROR_CONTEXT_BASE	((Error_context_t*)&error_info.context)
102
103#define errorpush(p,f)	(*(p)=*ERROR_CONTEXT_BASE,*ERROR_CONTEXT_BASE=error_info.empty,error_info.context=(Error_context_t*)(p),error_info.flags=(f))
104#define errorpop(p)	(*ERROR_CONTEXT_BASE=*(p))
105
106typedef struct Error_info_s Error_info_t;
107typedef struct Error_context_s Error_context_t;
108
109#define ERROR_CONTEXT \
110	ERROR_CONTEXT_T* context;	/* prev context stack element	*/ \
111	int	errors;			/* >= ERROR_ERROR count		*/ \
112	int	flags;			/* context flags		*/ \
113	int	line;			/* input|output line number	*/ \
114	int	warnings;		/* ERROR_WARNING count		*/ \
115	char*	file;			/* input|output file name	*/ \
116	char*	id;			/* command id			*/
117
118struct Error_context_s			/* context stack element	*/
119{
120	ERROR_CONTEXT
121};
122
123struct Error_info_s			/* error state			*/
124{
125	int	fd;			/* write(2) fd			*/
126
127	void	(*exit)(int);		/* error exit			*/
128	ssize_t	(*write)(int, const void*, size_t); /* error output	*/
129
130	/* the rest are implicitly initialized				*/
131
132	int	clear;			/* default clear ERROR_* flags	*/
133	int	core;			/* level>=core -> core dump	*/
134	int	indent;			/* debug trace indent level	*/
135	int	init;			/* initialized			*/
136	int	last_errno;		/* last reported errno		*/
137	int	mask;			/* multi level debug trace mask	*/
138	int	set;			/* default set ERROR_* flags	*/
139	int	trace;			/* debug trace level		*/
140
141	char*	version;		/* ERROR_SOURCE command version	*/
142
143	int	(*auxilliary)(Sfio_t*, int, int); /* aux info to append	*/
144
145	ERROR_CONTEXT			/* top of context stack		*/
146
147	Error_context_t	empty;		/* empty context stack element	*/
148
149	unsigned long	time;		/* debug time trace		*/
150
151	char*	(*translate)(const char*, const char*, const char*, const char*);	/* format translator */
152
153	const char*	catalog;	/* message catalog		*/
154};
155
156#ifndef errno
157extern int	errno;			/* system call error status	*/
158#endif
159
160#if _BLD_ast && defined(__EXPORT__)
161#define extern		extern __EXPORT__
162#endif
163#if !_BLD_ast && defined(__IMPORT__)
164#define extern		extern __IMPORT__
165#endif
166
167extern Error_info_t*	_error_infop_;
168
169#define error_info	(*_error_infop_)
170
171#undef	extern
172
173#if _BLD_ast && defined(__EXPORT__)
174#define extern		__EXPORT__
175#endif
176
177extern void		error(int, ...);
178extern int		errormsg(const char*, int, ...);
179extern int		errorf(void*, void*, int, ...);
180extern void		errorv(const char*, int, va_list);
181#ifndef errorx
182extern char*		errorx(const char*, const char*, const char*, const char*);
183#endif
184extern Error_info_t*	errorctx(Error_info_t*, int, int);
185
186#undef	extern
187
188#endif
189