shared_source/c_tcl_base_7_5_w_mods/regerror.c

/* $Header: /cvsroot/esrg/sfesrg/esrgpcpj/shared/tcl_base/regerror.c,v 1.1.1.1 2001/06/13 04:32:13 dtashley Exp $ */

/*
 * regerror - error-code expansion
 *
 * Copyright (c) 1998, 1999 Henry Spencer.  All rights reserved.
 * 
 * Development of this software was funded, in part, by Cray Research Inc.,
 * UUNET Communications Services Inc., Sun Microsystems Inc., and Scriptics
 * Corporation, none of whom are responsible for the results.  The author
 * thanks all of them. 
 * 
 * Redistribution and use in source and binary forms -- with or without
 * modification -- are permitted for any purpose, provided that
 * redistributions in source form retain this entire copyright notice and
 * indicate the origin and nature of any modifications.
 * 
 * I'd appreciate being given credit for this package in the documentation
 * of software which uses it, but that is not a requirement.
 * 
 * THIS SOFTWARE IS PROVIDED ``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
 * HENRY SPENCER 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.
 *
 */

#include "regguts.h"

/* unknown-error explanation */
static char unk[] = "*** unknown regex error code 0x%x ***";

/* struct to map among codes, code names, and explanations */
static struct rerr {
        int code;
        char *name;
        char *explain;
} rerrs[] = {
        /* the actual table is built from regex.h */
#       include "regerrs.h"
        { -1,   "",     "oops" },       /* explanation special-cased in code */
};

/*
 - regerror - the interface to error numbers
 */
/* ARGSUSED */
size_t                          /* actual space needed (including NUL) */
regerror(errcode, preg, errbuf, errbuf_size)
int errcode;                    /* error code, or REG_ATOI or REG_ITOA */
CONST regex_t *preg;            /* associated regex_t (unused at present) */
char *errbuf;                   /* result buffer (unless errbuf_size==0) */
size_t errbuf_size;             /* available space in errbuf, can be 0 */
{
        struct rerr *r;
        char *msg;
        char convbuf[sizeof(unk)+50];   /* 50 = plenty for int */
        size_t len;
        int icode;

        switch (errcode) {
        case REG_ATOI:          /* convert name to number */
                for (r = rerrs; r->code >= 0; r++)
                        if (strcmp(r->name, errbuf) == 0)
                                break;
                sprintf(convbuf, "%d", r->code);        /* -1 for unknown */
                msg = convbuf;
                break;
        case REG_ITOA:          /* convert number to name */
                icode = atoi(errbuf);   /* not our problem if this fails */
                for (r = rerrs; r->code >= 0; r++)
                        if (r->code == icode)
                                break;
                if (r->code >= 0)
                        msg = r->name;
                else {                  /* unknown; tell him the number */
                        sprintf(convbuf, "REG_%u", (unsigned)icode);
                        msg = convbuf;
                }
                break;
        default:                /* a real, normal error code */
                for (r = rerrs; r->code >= 0; r++)
                        if (r->code == errcode)
                                break;
                if (r->code >= 0)
                        msg = r->explain;
                else {                  /* unknown; say so */
                        sprintf(convbuf, unk, errcode);
                        msg = convbuf;
                }
                break;
        }

        len = strlen(msg) + 1;          /* space needed, including NUL */
        if (errbuf_size > 0) {
                if (errbuf_size > len)
                        strcpy(errbuf, msg);
                else {                  /* truncate to fit */
                        strncpy(errbuf, msg, errbuf_size-1);
                        errbuf[errbuf_size-1] = '\0';
                }
        }

        return len;
}

/* $History: regerror.c $
 * 
 * *****************  Version 1  *****************
 * User: Dtashley     Date: 1/02/01    Time: 12:10a
 * Created in $/IjuScripter, IjuConsole/Source/Tcl Base
 * Initial check-in.
 */ 

/* End of REGERROR.C */
1	/* $Header: /cvsroot/esrg/sfesrg/esrgpcpj/shared/tcl_base/regerror.c,v 1.1.1.1 2001/06/13 04:32:13 dtashley Exp $ */
2
3	/*
4	* regerror - error-code expansion
5	*
6	* Copyright (c) 1998, 1999 Henry Spencer. All rights reserved.
7	*
8	* Development of this software was funded, in part, by Cray Research Inc.,
9	* UUNET Communications Services Inc., Sun Microsystems Inc., and Scriptics
10	* Corporation, none of whom are responsible for the results. The author
11	* thanks all of them.
12	*
13	* Redistribution and use in source and binary forms -- with or without
14	* modification -- are permitted for any purpose, provided that
15	* redistributions in source form retain this entire copyright notice and
16	* indicate the origin and nature of any modifications.
17	*
18	* I'd appreciate being given credit for this package in the documentation
19	* of software which uses it, but that is not a requirement.
20	*
21	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
22	* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
23	* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
24	* HENRY SPENCER BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
25	* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
26	* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
27	* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
28	* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
29	* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
30	* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31	*
32	*/
33
34	#include "regguts.h"
35
36	/* unknown-error explanation */
37	static char unk[] = "* unknown regex error code 0x%x *";
38
39	/* struct to map among codes, code names, and explanations */
40	static struct rerr {
41	int code;
42	char *name;
43	char *explain;
44	} rerrs[] = {
45	/* the actual table is built from regex.h */
46	# include "regerrs.h"
47	{ -1, "", "oops" }, /* explanation special-cased in code */
48	};
49
50	/*
51	- regerror - the interface to error numbers
52	*/
53	/* ARGSUSED */
54	size_t /* actual space needed (including NUL) */
55	regerror(errcode, preg, errbuf, errbuf_size)
56	int errcode; /* error code, or REG_ATOI or REG_ITOA */
57	CONST regex_t preg; / associated regex_t (unused at present) */
58	char errbuf; / result buffer (unless errbuf_size==0) */
59	size_t errbuf_size; /* available space in errbuf, can be 0 */
60	{
61	struct rerr *r;
62	char *msg;
63	char convbuf[sizeof(unk)+50]; /* 50 = plenty for int */
64	size_t len;
65	int icode;
66
67	switch (errcode) {
68	case REG_ATOI: /* convert name to number */
69	for (r = rerrs; r->code >= 0; r++)
70	if (strcmp(r->name, errbuf) == 0)
71	break;
72	sprintf(convbuf, "%d", r->code); /* -1 for unknown */
73	msg = convbuf;
74	break;
75	case REG_ITOA: /* convert number to name */
76	icode = atoi(errbuf); /* not our problem if this fails */
77	for (r = rerrs; r->code >= 0; r++)
78	if (r->code == icode)
79	break;
80	if (r->code >= 0)
81	msg = r->name;
82	else { /* unknown; tell him the number */
83	sprintf(convbuf, "REG_%u", (unsigned)icode);
84	msg = convbuf;
85	}
86	break;
87	default: /* a real, normal error code */
88	for (r = rerrs; r->code >= 0; r++)
89	if (r->code == errcode)
90	break;
91	if (r->code >= 0)
92	msg = r->explain;
93	else { /* unknown; say so */
94	sprintf(convbuf, unk, errcode);
95	msg = convbuf;
96	}
97	break;
98	}
99
100	len = strlen(msg) + 1; /* space needed, including NUL */
101	if (errbuf_size > 0) {
102	if (errbuf_size > len)
103	strcpy(errbuf, msg);
104	else { /* truncate to fit */
105	strncpy(errbuf, msg, errbuf_size-1);
106	errbuf[errbuf_size-1] = '\0';
107	}
108	}
109
110	return len;
111	}
112
113	/* $History: regerror.c $
114	*
115	* *************** Version 1 ***************
116	* User: Dtashley Date: 1/02/01 Time: 12:10a
117	* Created in $/IjuScripter, IjuConsole/Source/Tcl Base
118	* Initial check-in.
119	*/
120
121	/* End of REGERROR.C */