blob: 9a05347126f495671b3d8dce0ce20c717bd7cb5c (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
|
/*++
/* NAME
/* allspace 3
/* SUMMARY
/* predicate if string is all space
/* SYNOPSIS
/* #include <stringops.h>
/*
/* int allspace(buffer)
/* const char *buffer;
/* DESCRIPTION
/* allspace() determines if its argument is an all-space string.
/*
/* Arguments:
/* .IP buffer
/* The null-terminated input string.
/* LICENSE
/* .ad
/* .fi
/* The Secure Mailer license must be distributed with this software.
/* AUTHOR(S)
/* Wietse Venema
/* IBM T.J. Watson Research
/* P.O. Box 704
/* Yorktown Heights, NY 10598, USA
/*--*/
/* System library. */
#include <sys_defs.h>
#include <ctype.h>
/* Utility library. */
#include "stringops.h"
/* allspace - return true if string is all space */
int allspace(const char *string)
{
const char *cp;
int ch;
if (*string == 0)
return (0);
for (cp = string; (ch = *(unsigned char *) cp) != 0; cp++)
if (!ISASCII(ch) || !ISSPACE(ch))
return (0);
return (1);
}
|
