From c936ad12089e02e948928329ffec48d4bc3b83d4 Mon Sep 17 00:00:00 2001
From: Reid Spencer <rspencer@reidspencer.com>
Date: Tue, 14 Dec 2004 18:42:13 +0000
Subject: Add the getMagicNumber method. Patch contributed by Henrik Bach.
 Thanks Henrik!

llvm-svn: 18933
---
 llvm/lib/System/Win32/Path.cpp | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

(limited to 'llvm/lib/System/Win32/Path.cpp')

diff --git a/llvm/lib/System/Win32/Path.cpp b/llvm/lib/System/Win32/Path.cpp
index 88e20cd354f..f6e4c3b4763 100644
--- a/llvm/lib/System/Win32/Path.cpp
+++ b/llvm/lib/System/Win32/Path.cpp
@@ -565,6 +565,25 @@ Path::destroyFile() {
   return true;
 }
 
+bool Path::getMagicNumber(std::string& Magic, unsigned len) const {
+  if (!isFile())
+    return false;
+  assert(len < 1024 && "Request for magic string too long");
+  char* buf = (char*) alloca(1 + len);
+  std::ofstream ofs(path.c_str(),std::ofstream::in);
+  if (!ofs.is_open())
+    return false;
+  std::ifstream ifs(path.c_str());
+  if (!ifs.is_open())
+    return false;
+  ifs.read(buf, len);
+  ofs.close();
+  ifs.close();
+  buf[len] = '\0';
+  Magic = buf;
+  return true;
+}
+
 }
 }
 
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