Standard Libraries for EDK II.

[mirror_edk2.git] / StdLib / LibC / Stdio / sscanf.c

diff --git a/StdLib/LibC/Stdio/sscanf.c b/StdLib/LibC/Stdio/sscanf.c
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+++ b/StdLib/LibC/Stdio/sscanf.c
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+/** @file\r
+    Implementation of sscanf as declared in <stdio.h>.\r
+\r
+    Copyright (c) 2010, Intel Corporation. All rights reserved.<BR>\r
+    This program and the accompanying materials are licensed and made available\r
+    under the terms and conditions of the BSD License that accompanies this\r
+    distribution.  The full text of the license may be found at\r
+    http://opensource.org/licenses/bsd-license.php.\r
+\r
+    THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
+    WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+\r
+    Copyright (c) 1990, 1993\r
+    The Regents of the University of California.  All rights reserved.\r
+\r
+    This code is derived from software contributed to Berkeley by\r
+    Chris Torek.\r
+\r
+    Redistribution and use in source and binary forms, with or without\r
+    modification, are permitted provided that the following conditions\r
+    are met:\r
+      - Redistributions of source code must retain the above copyright\r
+        notice, this list of conditions and the following disclaimer.\r
+      - Redistributions in binary form must reproduce the above copyright\r
+        notice, this list of conditions and the following disclaimer in the\r
+        documentation and/or other materials provided with the distribution.\r
+      - Neither the name of the University nor the names of its contributors\r
+        may be used to endorse or promote products derived from this software\r
+        without specific prior written permission.\r
+\r
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"\r
+    AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE\r
+    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE\r
+    ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE\r
+    LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR\r
+    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF\r
+    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS\r
+    INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN\r
+    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)\r
+    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE\r
+    POSSIBILITY OF SUCH DAMAGE.\r
+\r
+    NetBSD: sscanf.c,v 1.16 2005/11/29 03:12:00 christos Exp\r
+    sscanf.c  8.1 (Berkeley) 6/4/93\r
+**/\r
+#include  <LibConfig.h>\r
+\r
+#include <assert.h>\r
+#include <errno.h>\r
+#include <stdarg.h>\r
+#include <stdio.h>\r
+#include <string.h>\r
+\r
+#include "reentrant.h"\r
+#include "local.h"\r
+\r
+static int eofread(void *, char *, int);\r
+\r
+/* ARGSUSED */\r
+static int\r
+eofread(void *cookie, char *buf, int len)\r
+{\r
+\r
+  return (0);\r
+}\r
+\r
+int\r
+sscanf(const char *str, char const *fmt, ...)\r
+{\r
+  int ret;\r
+  va_list ap;\r
+  FILE f;\r
+  struct __sfileext fext;\r
+\r
+  _DIAGASSERT(str != NULL);\r
+  _DIAGASSERT(fmt != NULL);\r
+\r
+  _FILEEXT_SETUP(&f, &fext);\r
+  f._flags = __SRD;\r
+  f._bf._base = f._p = __UNCONST(str);\r
+  f._bf._size = f._r = (int)strlen(str);\r
+  f._read = eofread;\r
+  _UB(&f)._base = NULL;\r
+  f._lb._base = NULL;\r
+  va_start(ap, fmt);\r
+  ret = __svfscanf_unlocked(&f, fmt, ap);\r
+  va_end(ap);\r
+  return (ret);\r
+}\r