shared_source/c_tcl_base_7_5_w_mods/regerror.c

/* $Header$ */
/*
 * 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;
}

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