rc_cmdlength.c revision 290001 
1#include <config.h>
2#include <rc_cmdlength.h>
3
4#if HAVE_UNISTD_H
5# include <unistd.h>
6#endif
7
8
9/* Bug 2853 */
10/* evaluate the length of the command sequence. This breaks at the first
11 * char that is not >= SPACE and <= 127 after trimming from the right.
12 */
13size_t
14remoteconfig_cmdlength(
15	const char *src_buf,
16	const char *src_end
17	)
18{
19	const char *scan;
20	unsigned char ch;
21
22	/* trim whitespace & garbage from the right */
23	while (src_end != src_buf) {
24		ch = src_end[-1];
25		if (ch > ' ' && ch < 128)
26			break;
27		--src_end;
28	}
29	/* now do a forward scan */
30	for (scan = src_buf; scan != src_end; ++scan) {
31		ch = scan[0];
32		if ((ch < ' ' || ch >= 128) && ch != '\t')
33			break;
34	}
35	return (size_t)(scan - src_buf);
36}
37