src/common/wordfile.c

/* Copyright (c) 1992 Regents of the University of California */

#ifndef lint
static char SCCSid[] = "$SunId$ LBL";
#endif

/*
 * Load whitespace separated words from a file into an array.
 * Assume the passed pointer array is big enough to hold them all.
 */

#include <ctype.h>

#define NULL            0

#define MAXFLEN         10240           /* file must be smaller than this */

extern char     *bmalloc();


int
wordfile(words, fname)          /* get words from fname, put in words */
char    **words;
char    *fname;
{
        char    **wp = words;
        int     fd;
        char    *buf;
        register int    n;
        register char   *cp;
                                        /* allocate memory */
        if ((cp = buf = bmalloc(MAXFLEN)) == NULL)
                return(-1);
        if ((fd = open(fname, 0)) < 0)
                goto err;
        n = read(fd, buf, MAXFLEN);
        close(fd);
        if (n < 0)
                goto err;
        if (n == MAXFLEN)               /* file too big, take what we can */
                while (!isspace(buf[--n]))
                        if (n <= 0)
                                goto err;
        bfree(buf+n+1, MAXFLEN-n-1);    /* return unneeded memory */
        while (n > 0) {                 /* break buffer into words */
                while (isspace(*cp)) {
                        cp++;
                        if (--n <= 0)
                                return(wp - words);
                }
                *wp++ = cp;
                while (!isspace(*cp)) {
                        cp++;
                        if (--n <= 0)
                                break;
                }
                *cp++ = '\0'; n--;
        }
        *wp = NULL;                     /* null terminator */
        return(wp - words);
err:
        bfree(buf, MAXFLEN);
        return(-1);
}
Revision:	2.2
Committed:	Fri Oct 16 13:02:46 1992 UTC (33 years ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 2.1:	+9 -8 lines
Log Message:	increased file size limit
#	User	Rev	Content
1	greg	2.1	/* Copyright (c) 1992 Regents of the University of California */
2
3			#ifndef lint
4			static char SCCSid[] = "$SunId$ LBL";
5			#endif
6
7			/*
8			* Load whitespace separated words from a file into an array.
9			* Assume the passed pointer array is big enough to hold them all.
10			*/
11
12	greg	2.2	#include <ctype.h>
13
14	greg	2.1	#define NULL 0
15
16	greg	2.2	#define MAXFLEN 10240 /* file must be smaller than this */
17	greg	2.1
18			extern char *bmalloc();
19
20
21			int
22			wordfile(words, fname) /* get words from fname, put in words */
23			char **words;
24			char *fname;
25			{
26			char **wp = words;
27			int fd;
28			char *buf;
29			register int n;
30			register char *cp;
31			/* allocate memory */
32	greg	2.2	if ((cp = buf = bmalloc(MAXFLEN)) == NULL)
33	greg	2.1	return(-1);
34			if ((fd = open(fname, 0)) < 0)
35			goto err;
36	greg	2.2	n = read(fd, buf, MAXFLEN);
37	greg	2.1	close(fd);
38			if (n < 0)
39			goto err;
40	greg	2.2	if (n == MAXFLEN) /* file too big, take what we can */
41	greg	2.1	while (!isspace(buf[--n]))
42			if (n <= 0)
43			goto err;
44	greg	2.2	bfree(buf+n+1, MAXFLEN-n-1); /* return unneeded memory */
45	greg	2.1	while (n > 0) { /* break buffer into words */
46			while (isspace(*cp)) {
47			cp++;
48			if (--n <= 0)
49			return(wp - words);
50			}
51			*wp++ = cp;
52			while (!isspace(*cp)) {
53			cp++;
54			if (--n <= 0)
55			break;
56			}
57			*cp++ = '\0'; n--;
58			}
59	greg	2.2	wp = NULL; / null terminator */
60	greg	2.1	return(wp - words);
61			err:
62	greg	2.2	bfree(buf, MAXFLEN);
63	greg	2.1	return(-1);
64			}