add xxhash

1 files changed, 170 insertions, 0 deletions

diff --git a/core/src/xmake/hash/xxhash.c b/core/src/xmake/hash/xxhash.c
new file mode 100644
index 000000000..9901f58f6
--- /dev/null
+++ b/core/src/xmake/hash/xxhash.c
@@ -0,0 +1,170 @@
+/*!A cross-platform build utility based on Lua
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * Copyright (C) 2015-present, TBOOX Open Source Group.
+ *
+ * @author      ruki
+ * @file        xxhash.c
+ *
+ */
+
+/* //////////////////////////////////////////////////////////////////////////////////////
+ * trace
+ */
+#define TB_TRACE_MODULE_NAME                "xxhash"
+#define TB_TRACE_MODULE_DEBUG               (0)
+
+/* //////////////////////////////////////////////////////////////////////////////////////
+ * includes
+ */
+#include "prefix.h"
+#define XXH_NAMESPACE XM_
+#define XXH_STATIC_LINKING_ONLY
+#define XXH_IMPLEMENTATION
+#include "xxhash/xxhash.h"
+
+/* //////////////////////////////////////////////////////////////////////////////////////
+ * implementation
+ */
+tb_int_t xm_hash_xxhash(lua_State* lua)
+{
+    // check
+    tb_assert_and_check_return_val(lua, 0);
+
+    // get mode
+    tb_size_t mode = (tb_size_t)lua_tonumber(lua, 1);
+    if (mode != 64 && mode != 128)
+    {
+        lua_pushnil(lua);
+        lua_pushfstring(lua, "invalid mode(%d))!", (tb_int_t)mode);
+        return 2;
+    }
+
+    // is bytes? get data and size
+    if (lua_isnumber(lua, 2) && lua_isnumber(lua, 3))
+    {
+        tb_byte_t const* data = (tb_byte_t const*)(tb_size_t)(tb_long_t)lua_tonumber(lua, 2);
+        tb_size_t size = (tb_size_t)lua_tonumber(lua, 3);
+        if (!data || !size)
+        {
+            lua_pushnil(lua);
+            lua_pushfstring(lua, "invalid data(%p) and size(%d)!", data, (tb_int_t)size);
+            return 2;
+        }
+
+        // compuate hash
+        tb_byte_t const* buffer;
+        XXH64_hash_t value64;
+        XXH128_hash_t value128;
+        if (mode == 64)
+        {
+            value64 = XM_XXH3_64bits(data, size);
+            buffer = (tb_byte_t const*)&value64;
+        }
+        else if (mode == 128)
+        {
+            value128 = XM_XXH3_128bits(data, size);
+            buffer = (tb_byte_t const*)&value128;
+        }
+
+        // make xxhash string
+        tb_size_t i = 0;
+        tb_size_t n = mode >> 3;
+        tb_char_t s[256] = {0};
+        for (i = 0; i < n; ++i) tb_snprintf(s + (i << 1), 3, "%02x", buffer[i]);
+
+        // save result
+        lua_pushstring(lua, s);
+        return 1;
+    }
+
+    // get the filename
+    tb_char_t const* filename = luaL_checkstring(lua, 2);
+    tb_check_return_val(filename, 0);
+
+    // load data from file
+    tb_bool_t ok = tb_false;
+    tb_stream_ref_t stream = tb_stream_init_from_file(filename, TB_FILE_MODE_RO);
+    if (stream)
+    {
+        // open stream
+        XXH3_state_t* state = XM_XXH3_createState();
+        if (tb_stream_open(stream) && state)
+        {
+            // reset xxhash
+            if (mode == 64) XM_XXH3_64bits_reset(state);
+            else XM_XXH3_128bits_reset(state);
+
+            // read data and update xxhash
+            tb_byte_t data[TB_STREAM_BLOCK_MAXN];
+            while (!tb_stream_beof(stream))
+            {
+                // read data
+                tb_long_t real = tb_stream_read(stream, data, sizeof(data));
+
+                // ok?
+                if (real > 0)
+                {
+                    if (mode == 64) XM_XXH3_64bits_update(state, data, real);
+                    else XM_XXH3_128bits_update(state, data, real);
+                }
+                // no data? continue it
+                else if (!real)
+                {
+                    // wait
+                    real = tb_stream_wait(stream, TB_STREAM_WAIT_READ, tb_stream_timeout(stream));
+                    tb_check_break(real > 0);
+
+                    // has read?
+                    tb_assert_and_check_break(real & TB_STREAM_WAIT_READ);
+                }
+                // failed or end?
+                else break;
+            }
+
+            // compuate hash
+            tb_byte_t const* buffer;
+            XXH64_hash_t value64;
+            XXH128_hash_t value128;
+            if (mode == 64)
+            {
+                value64 = XM_XXH3_64bits_digest(state);
+                buffer = (tb_byte_t const*)&value64;
+            }
+            else
+            {
+                value128 = XM_XXH3_128bits_digest(state);
+                buffer = (tb_byte_t const*)&value128;
+            }
+
+            // make xxhash string
+            tb_size_t i = 0;
+            tb_size_t n = mode >> 3;
+            tb_char_t s[256] = {0};
+            for (i = 0; i < n; ++i) tb_snprintf(s + (i << 1), 3, "%02x", buffer[i]);
+
+            // save result
+	        lua_pushstring(lua, s);
+            ok = tb_true;
+        }
+
+        // exit stream
+        tb_stream_exit(stream);
+
+        // exit xxhash
+        if (state) XM_XXH3_freeState(state);
+    }
+    if (!ok) lua_pushnil(lua);
+    return 1;
+}