Initial commit of Hyperscan

src/util/unicode_def.h

@@ -0,0 +1,85 @@
+/*
+ * 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.
+ */
+
+#ifndef UNICODE_DEF_H
+#define UNICODE_DEF_H
+
+#include "ue2common.h"
+
+#define MAX_UNICODE 0x10FFFF
+#define INVALID_UNICODE 0xffffffff /* unicode could never go above 2^31 */
+
+#define UTF_2CHAR_MIN (1U << 7)
+#define UTF_3CHAR_MIN (1U << 11)
+#define UTF_4CHAR_MIN (1U << 16)
+#define UTF_CONT_SHIFT 6
+#define UTF_CONT_BYTE_RANGE (1U << UTF_CONT_SHIFT)
+#define UTF_CONT_BYTE_HEADER  ((u8)0x80) /* 10xx xxxx */
+#define UTF_TWO_BYTE_HEADER   ((u8)0xc0) /* 110x xxxx */
+#define UTF_THREE_BYTE_HEADER ((u8)0xe0) /* 1110 xxxx */
+#define UTF_FOUR_BYTE_HEADER  ((u8)0xf0) /* 1111 0xxx */
+
+#define UTF_CONT_BYTE_VALUE_MASK 0x3f
+
+#define UTF_CONT_MIN UTF_CONT_BYTE_HEADER
+#define UTF_CONT_MAX (UTF_TWO_BYTE_HEADER - 1)
+
+#define UTF_TWO_BYTE_MIN UTF_TWO_BYTE_HEADER
+#define UTF_TWO_BYTE_MAX (UTF_THREE_BYTE_HEADER - 1)
+
+#define UTF_THREE_BYTE_MIN UTF_THREE_BYTE_HEADER
+#define UTF_THREE_BYTE_MAX (UTF_FOUR_BYTE_HEADER - 1)
+
+#define UTF_FOUR_BYTE_MIN UTF_FOUR_BYTE_HEADER
+#define UTF_FOUR_BYTE_MAX ((u8)0xf4)
+
+#define UTF_CONT_CR CharReach(UTF_CONT_MIN, UTF_CONT_MAX)
+#define UTF_ASCII_CR CharReach(0, 127)
+#define UTF_START_CR CharReach(UTF_TWO_BYTE_MIN, UTF_FOUR_BYTE_MAX)
+#define UTF_TWO_START_CR CharReach(UTF_TWO_BYTE_MIN, UTF_TWO_BYTE_MAX)
+#define UTF_THREE_START_CR CharReach(UTF_THREE_BYTE_MIN, UTF_THREE_BYTE_MAX)
+#define UTF_FOUR_START_CR CharReach(UTF_FOUR_BYTE_MIN, UTF_FOUR_BYTE_MAX)
+
+#define UNICODE_SURROGATE_MIN 0xd800
+#define UNICODE_SURROGATE_MAX 0xdfff
+
+#ifdef __cplusplus
+
+namespace ue2 {
+typedef u32 unichar; /* represents a unicode code point */
+
+static UNUSED
+u8 makeContByte(u8 val) {
+    return UTF_CONT_BYTE_HEADER | (val & UTF_CONT_BYTE_VALUE_MASK);
+}
+
+} // namespace
+
+#endif // __cplusplus
+
+#endif