21 |
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#include "standard.h" |
22 |
|
|
23 |
|
|
24 |
< |
#ifndef MAXFLEN |
25 |
< |
#define MAXFLEN 204800 /* file must be smaller than this */ |
26 |
< |
#endif |
24 |
> |
#define MAXWLEN 4096 /* words must be shorter than this */ |
25 |
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|
26 |
|
|
27 |
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int |
31 |
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char *fname |
32 |
|
) |
33 |
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{ |
34 |
+ |
int wrdcnt = 0; |
35 |
+ |
int n = 0; |
36 |
|
int fd; |
37 |
< |
char buf[MAXFLEN]; |
38 |
< |
int n; |
37 |
> |
char buf[MAXWLEN]; |
38 |
|
/* load file into buffer */ |
39 |
< |
if (fname == NULL) |
39 |
> |
if (fname == NULL || !*fname) |
40 |
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return(-1); /* no filename */ |
41 |
+ |
if (nargs <= 1) |
42 |
+ |
return(-1); |
43 |
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if ((fd = open(fname, 0)) < 0) |
44 |
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return(-1); /* open error */ |
45 |
< |
n = read(fd, buf, MAXFLEN); |
45 |
> |
words[0] = NULL; |
46 |
> |
while (nargs > 1 && (n += read(fd, buf+n, MAXWLEN-n)) > 0) { |
47 |
> |
int crem = 0; |
48 |
> |
if (n >= MAXWLEN) /* still something left? */ |
49 |
> |
while (!isspace(buf[--n])) { |
50 |
> |
if (n <= 0) /* one long word! */ |
51 |
> |
goto done; |
52 |
> |
++crem; |
53 |
> |
} |
54 |
> |
buf[n] = '\0'; /* terminate & parse */ |
55 |
> |
n = wordstring(words, nargs, buf); |
56 |
> |
if (n < 0) { |
57 |
> |
wrdcnt = -1; /* memory error */ |
58 |
> |
break; |
59 |
> |
} |
60 |
> |
words += n; nargs -= n; |
61 |
> |
wrdcnt += n; |
62 |
> |
if ((n = crem) > 0) /* move remainder */ |
63 |
> |
memmove(buf, buf+MAXWLEN-crem, crem); |
64 |
> |
} |
65 |
> |
done: |
66 |
|
close(fd); |
67 |
< |
if (n < 0) /* read error */ |
47 |
< |
return(-1); |
48 |
< |
if (n == MAXFLEN) /* file too big, take what we can */ |
49 |
< |
while (!isspace(buf[--n])) |
50 |
< |
if (n <= 0) /* one long word! */ |
51 |
< |
return(-1); |
52 |
< |
buf[n] = '\0'; /* terminate */ |
53 |
< |
return(wordstring(words, nargs, buf)); /* wordstring does the rest */ |
67 |
> |
return(wrdcnt); |
68 |
|
} |
69 |
|
|
70 |
|
|
93 |
|
while (*++cp && !isspace(*cp)) |
94 |
|
; |
95 |
|
} |
96 |
+ |
*cp = '\0'; /* terminates overflow */ |
97 |
|
*ap = NULL; |
98 |
|
return(ap - avl); |
99 |
|
} |