Initial commit of Hyperscan

src/util/dump_mask.cpp

@@ -0,0 +1,63 @@
+/*
+ * Copyright (c) 2015, Intel Corporation
+ *
+ * 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 Intel Corporation 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.
+ */
+
+/** \file
+ * \brief Dump code for bitmasks.
+ *
+ * Note that these functions are only emitted in builds with DUMP_SUPPORT.
+ */
+
+#include "config.h"
+
+#ifdef DUMP_SUPPORT
+
+#include "ue2common.h"
+#include "util/dump_mask.h"
+
+#include <string>
+
+namespace ue2 {
+
+std::string dumpMask(const u8 *mask, size_t len) {
+    std::string s;
+    s.reserve(len + len / 8);
+
+    for (size_t i = 0; i < len; i++) {
+        if ((i % 8) == 0 && i != 0) {
+            s.push_back(' ');
+        }
+
+        s.push_back((mask[i / 8] >> (i % 8)) & 0x1 ? '1' : '0');
+    }
+
+    return s;
+}
+
+} // namespace ue2
+
+#endif // DUMP_SUPPORT