Moving BeefMem

BeefTools/BeefMem/gperftools/src/raw_printer.cc

@@ -0,0 +1,71 @@
+// Copyright (c) 2008, Google Inc.
+// All rights reserved.
+// 
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+// 
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+// 
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// ---
+// Author: sanjay@google.com (Sanjay Ghemawat)
+
+#include <config.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include "raw_printer.h"
+#include "base/logging.h"
+
+namespace base {
+
+RawPrinter::RawPrinter(char* buf, int length)
+    : base_(buf),
+      ptr_(buf),
+      limit_(buf + length - 1) {
+  RAW_DCHECK(length > 0, "");
+  *ptr_ = '\0';
+  *limit_ = '\0';
+}
+
+void RawPrinter::Printf(const char* format, ...) {
+  if (limit_ > ptr_) {
+    va_list ap;
+    va_start(ap, format);
+    int avail = limit_ - ptr_;
+    // We pass avail+1 to vsnprintf() since that routine needs room
+    // to store the trailing \0.
+    const int r = perftools_vsnprintf(ptr_, avail+1, format, ap);
+    va_end(ap);
+    if (r < 0) {
+      // Perhaps an old glibc that returns -1 on truncation?
+      ptr_ = limit_;
+    } else if (r > avail) {
+      // Truncation
+      ptr_ = limit_;
+    } else {
+      ptr_ += r;
+    }
+  }
+}
+
+}