| 1 |
greg |
1.1 |
#ifndef lint
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| 2 |
schorsch |
2.5 |
static const char RCSid[] = "$Id: fgetword.c,v 2.4 2003/06/27 06:53:21 greg Exp $";
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| 3 |
greg |
1.1 |
#endif
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| 4 |
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/*
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| 5 |
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* Read white space separated words from stream
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| 6 |
greg |
2.2 |
*
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| 7 |
greg |
2.4 |
* External symbols declared in rtio.h
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| 8 |
greg |
2.2 |
*/
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| 9 |
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| 10 |
greg |
2.3 |
#include "copyright.h"
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| 11 |
greg |
1.1 |
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| 12 |
greg |
2.4 |
#include "rtio.h"
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| 13 |
greg |
1.1 |
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| 14 |
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#include <ctype.h>
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| 15 |
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| 16 |
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| 17 |
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char *
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| 18 |
greg |
2.2 |
fgetword(s, n, fp) /* get (quoted) word up to n-1 characters */
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| 19 |
greg |
1.1 |
char *s;
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| 20 |
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int n;
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| 21 |
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register FILE *fp;
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| 22 |
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{
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| 23 |
greg |
2.2 |
int quote = '\0';
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| 24 |
greg |
1.1 |
register char *cp;
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| 25 |
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register int c;
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| 26 |
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/* skip initial white space */
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| 27 |
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do
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| 28 |
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c = getc(fp);
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| 29 |
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while (isspace(c));
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| 30 |
greg |
2.2 |
/* check for quote */
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| 31 |
schorsch |
2.5 |
if ((c == '"') | (c == '\'')) {
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| 32 |
greg |
2.2 |
quote = c;
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| 33 |
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c = getc(fp);
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| 34 |
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}
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| 35 |
greg |
1.1 |
/* check for end of file */
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| 36 |
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if (c == EOF)
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| 37 |
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return(NULL);
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| 38 |
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/* get actual word */
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| 39 |
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cp = s;
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| 40 |
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do {
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| 41 |
greg |
2.2 |
if (--n <= 0) /* check length limit */
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| 42 |
greg |
1.1 |
break;
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| 43 |
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*cp++ = c;
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| 44 |
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c = getc(fp);
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| 45 |
greg |
2.2 |
} while (c != EOF && !(quote ? c==quote : isspace(c)));
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| 46 |
greg |
1.1 |
*cp = '\0';
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| 47 |
schorsch |
2.5 |
if ((c != EOF) & (!quote)) /* replace space */
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| 48 |
greg |
1.1 |
ungetc(c, fp);
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| 49 |
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return(s);
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| 50 |
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}
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