# HG changeset patch
# User Rob Landley <rob@landley.net>
# Date 1353090408 21600
# Node ID 078138791b5c6d5f6ca22f01f2afdf6ad2b48b92
# Parent  ca9a1d8e25310139c12971f2ef879b63c958678f
Add cut from Jason Kyungwan Han.

diff -r ca9a1d8e2531 -r 078138791b5c lib/lib.c
--- a/lib/lib.c	Fri Nov 16 00:46:39 2012 -0600
+++ b/lib/lib.c	Fri Nov 16 12:26:48 2012 -0600
@@ -1099,3 +1099,22 @@
   }
   return NULL; //not reached
 }
+
+/*
+ * used to get the interger value.
+ */
+unsigned long get_int_value(const char *numstr, unsigned lowrange, unsigned highrange)
+{
+  unsigned long rvalue = 0;
+  char *ptr;
+  if(*numstr == '-' || *numstr == '+' || isspace(*numstr)) perror_exit("invalid number '%s'", numstr);
+  errno = 0;
+  rvalue = strtoul(numstr, &ptr, 10);
+  if(errno || numstr == ptr) perror_exit("invalid number '%s'", numstr);
+   if(*ptr) perror_exit("invalid number '%s'", numstr);
+   if(rvalue >= lowrange && rvalue <= highrange) return rvalue;
+   else {
+         perror_exit("invalid number '%s'", numstr);
+         return rvalue; //Not reachable; to avoid waring message.
+   }
+}
diff -r ca9a1d8e2531 -r 078138791b5c lib/lib.h
--- a/lib/lib.h	Fri Nov 16 00:46:39 2012 -0600
+++ b/lib/lib.h	Fri Nov 16 12:26:48 2012 -0600
@@ -175,3 +175,6 @@
 
 // du helper functions
 char* make_human_readable(unsigned long long size, unsigned long unit);
+
+// cut helper functions
+unsigned long get_int_value(const char *numstr, unsigned lowrange, unsigned highrange);