Initial checkin

BeefySysLib/third_party/sparsehash/windows/port.cc

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+/* Copyright (c) 2007, 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: Craig Silverstein
+ */
+
+#include <sparsehash/internal/sparseconfig.h>
+#ifndef WIN32
+# error You should only be including windows/port.cc in a windows environment!
+#endif
+
+#include "config.h"
+#include <stdarg.h>    // for va_list, va_start, va_end
+#include "port.h"
+
+// Calls the windows _vsnprintf, but always NUL-terminate.
+int snprintf(char *str, size_t size, const char *format, ...) {
+  if (size == 0)        // not even room for a \0?
+    return -1;          // not what C99 says to do, but what windows does
+  str[size-1] = '\0';
+  va_list ap;
+  va_start(ap, format);
+  const int r = _vsnprintf(str, size-1, format, ap);
+  va_end(ap);
+  return r;
+}
+
+std::string TmpFile(const char* basename) {
+  char tmppath_buffer[1024];
+  int tmppath_len = GetTempPathA(sizeof(tmppath_buffer), tmppath_buffer);
+  if (tmppath_len <= 0 || tmppath_len >= sizeof(tmppath_buffer)) {
+    return basename;           // an error, so just bail on tmppath
+  }
+  snprintf(tmppath_buffer + tmppath_len, sizeof(tmppath_buffer) - tmppath_len,
+           "\\%s", basename);
+  return tmppath_buffer;
+}