| 15 |
|
|
| 16 |
|
|
| 17 |
|
char * |
| 18 |
< |
fgetword(s, n, fp) /* get (quoted) word up to n-1 characters */ |
| 19 |
< |
char *s; |
| 20 |
< |
int n; |
| 21 |
< |
register FILE *fp; |
| 18 |
> |
fgetword( /* get (quoted) word up to n-1 characters */ |
| 19 |
> |
char *s, |
| 20 |
> |
int n, |
| 21 |
> |
FILE *fp |
| 22 |
> |
) |
| 23 |
|
{ |
| 24 |
|
int quote = '\0'; |
| 25 |
< |
register char *cp; |
| 26 |
< |
register int c; |
| 25 |
> |
char *cp; |
| 26 |
> |
int c; |
| 27 |
> |
/* sanity checks */ |
| 28 |
> |
if ((s == NULL) | (n < 2)) |
| 29 |
> |
return(NULL); |
| 30 |
|
/* skip initial white space */ |
| 31 |
|
do |
| 32 |
|
c = getc(fp); |
| 36 |
|
quote = c; |
| 37 |
|
c = getc(fp); |
| 38 |
|
} |
| 35 |
– |
/* check for end of file */ |
| 36 |
– |
if (c == EOF) |
| 37 |
– |
return(NULL); |
| 39 |
|
/* get actual word */ |
| 40 |
|
cp = s; |
| 41 |
< |
do { |
| 41 |
> |
while (c != EOF && !(quote ? c==quote : isspace(c))) { |
| 42 |
|
if (--n <= 0) /* check length limit */ |
| 43 |
|
break; |
| 44 |
|
*cp++ = c; |
| 45 |
|
c = getc(fp); |
| 46 |
< |
} while (c != EOF && !(quote ? c==quote : isspace(c))); |
| 46 |
> |
} |
| 47 |
|
*cp = '\0'; |
| 48 |
< |
if ((c != EOF) & (!quote)) /* replace space */ |
| 48 |
> |
if (c == EOF) { /* hit end-of-file? */ |
| 49 |
> |
if (cp == s) /* and got nothing? */ |
| 50 |
> |
return(NULL); |
| 51 |
> |
} else if (!quote) /* replace white character */ |
| 52 |
|
ungetc(c, fp); |
| 53 |
|
return(s); |
| 54 |
|
} |
