1 files changed, 72 insertions, 0 deletions

diff --git a/private/crt32/iostream/istruint.cxx b/private/crt32/iostream/istruint.cxx
new file mode 100644
index 000000000..9432b08f4
--- /dev/null
+++ b/private/crt32/iostream/istruint.cxx
@@ -0,0 +1,72 @@
+/***
+* istruint.cxx - definitions for istream class operaotor>>(unsigned int) funct
+*
+*	Copyright (c) 1991-1992, Microsoft Corporation.  All rights reserved.
+*
+*Purpose:
+*	Definitions of operator>>(unsigned int) member function for istream
+*	class.
+*	[AT&T C++]
+*
+*Revision History:
+*	09-26-91   KRS	Created.  Split out from istream.cxx for granularity.
+*	01-06-92   KRS	Improve error handling.
+*	12-30-92   KRS	Fix indirection problem with **endptr.
+*
+*******************************************************************************/
+
+#include <cruntime.h>
+#include <internal.h>
+#include <stdlib.h>
+#include <limits.h>
+#include <errno.h>
+#include <iostream.h>
+#pragma hdrstop
+
+// CONSIDER: validify all this maximum length
+#define MAXLONGSIZ	16
+
+/***
+*istream& istream::operator>>(unsigned int& n) - extract unsigned int
+*
+*Purpose:
+*	Extract unsigned int value from stream
+*	Valid range is INT_MIN to UINT_MAX.
+*
+*Entry:
+*	n = value to update
+*
+*Exit:
+*	n updated, or ios::failbit and n=UINT_MAX if error
+*
+*Exceptions:
+*	Stream error on entry or value out of range
+*
+*******************************************************************************/
+istream& istream::operator>>(unsigned int& n)
+{
+_WINSTATIC char ibuffer[MAXLONGSIZ];
+    unsigned long value;
+    char ** endptr = (char**)NULL;
+    if (ipfx(0)) {
+	value = strtoul(ibuffer, endptr, getint(ibuffer));
+
+	// CONSIDER: all but the first check is to emulate strtoul behavior
+	if (((value>UINT_MAX) && (value<=(ULONG_MAX-(-INT_MIN))))
+		|| ((value==ULONG_MAX) && (errno==ERANGE)))
+	    {
+	    n = UINT_MAX;
+	    state |= ios::failbit;
+	    }
+	else
+	    n = (unsigned int) value;
+#if 0
+	if (**endptr)
+	    {
+	    //UNDONE: put back any unread characters, if possible
+	    }
+#endif
+        isfx();
+	}
+return *this;
+}