2964 need POSIX 2008 locale object support
Reviewed by: Robert Mustacchi <rm@joyent.com>
Reviewed by: Gordon Ross <gordon.ross@nexenta.com>
Approved by: TBD

*** 19,28 ****
--- 19,29 ----
   * CDDL HEADER END
   */
  
  /*
   * Copyright (c) 1992, 2010, Oracle and/or its affiliates. All rights reserved.
+  * Copyright 2014 Garrett D'Amore <garrett@damore.org>
   */
  
  /*
   * Implementation of all external interfaces between ld.so.1 and libc.
   *
*** 665,670 ****
--- 666,720 ----
  ssize_t
  write(int fd, const void *buf, size_t size)
  {
          extern ssize_t __write(int, const void *, size_t);
          return (__write(fd, buf, size));
+ }
+ 
+ /*
+  * ASCII versions of ctype character classification functions.  This avoids
+  * pulling in the entire locale framework that is in libc.
+  */
+ 
+ int
+ isdigit(int c)
+ {
+         return ((c >= '0' && c <= '9') ? 1 : 0);
+ }
+ 
+ int
+ isupper(int c)
+ {
+         return ((c >= 'A' && c <= 'Z') ? 1 : 0);
+ }
+ 
+ int
+ islower(int c)
+ {
+         return ((c >= 'a' && c <= 'z') ? 1 : 0);
+ }
+ 
+ int
+ isspace(int c)
+ {
+         return (((c == ' ') || (c == '\t') || (c == '\r') || (c == '\n') ||
+             (c == '\v') || (c == '\f')) ? 1 : 0);
+ }
+ 
+ int
+ isxdigit(int c)
+ {
+         return ((isdigit(c) || (c >= 'A' && c <= 'F') ||
+             (c >= 'a' && c <= 'f')) ? 1 : 0);
+ }
+ 
+ int
+ isalpha(int c)
+ {
+         return ((isupper(c) || islower(c)) ? 1 : 0);
+ }
+ 
+ int
+ isalnum(int c)
+ {
+         return ((isalpha(c) || isdigit(c)) ? 1 : 0);
  }