From 8c26570e658b2a458db92fd2ffc8906e905c1ca1 Mon Sep 17 00:00:00 2001
From: ruki <waruqi@gmail.com>
Date: Wed, 14 Jun 2017 09:30:19 +0800
Subject: add find_zlib

---
 xmake/modules/detect/package/find_zlib.lua | 81 ++++++++++++++++++++++++++++++
 1 file changed, 81 insertions(+)
 create mode 100644 xmake/modules/detect/package/find_zlib.lua

diff --git a/xmake/modules/detect/package/find_zlib.lua b/xmake/modules/detect/package/find_zlib.lua
new file mode 100644
index 000000000..49cc3e83a
--- /dev/null
+++ b/xmake/modules/detect/package/find_zlib.lua
@@ -0,0 +1,81 @@
+--!The Make-like Build Utility based on Lua
+--
+-- Licensed to the Apache Software Foundation (ASF) under one
+-- or more contributor license agreements.  See the NOTICE file
+-- distributed with this work for additional information
+-- regarding copyright ownership.  The ASF licenses this file
+-- to you 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 - 2017, TBOOX Open Source Group.
+--
+-- @author      ruki
+-- @file        find_zlib.lua
+--
+
+-- imports
+import("lib.detect.find_path")
+import("lib.detect.find_library")
+
+-- find zlib 
+--
+-- @param opt   the package options. e.g. see the options of find_package()
+--
+-- @return      see the return value of find_package()
+--
+function main(opt)
+
+    -- for windows platform
+    --
+    -- http://gnuwin32.sourceforge.net/packages/zlib.html
+    --
+    if opt.plat == "windows" then
+
+        -- init search pathes
+        local pathes = {"$(reg HKEY_LOCAL_MACHINE\\SOFTWARE\\GnuWin32\\Zlib;InstallPath)",
+                        "$(env PROGRAMFILES)/GnuWin32",
+                        "$(env PROGRAMFILES)/zlib"}
+
+        -- find library
+        local result = {links = {}, linkdirs = {}, includedirs = {}}
+        local linkinfo = find_library("zlib", pathes, {suffixes = "lib"})
+        if not linkinfo then
+            return 
+        end
+
+        -- save link and directory
+        table.insert(result.links, linkinfo.link)
+        table.insert(result.linkdirs, linkinfo.linkdir)
+
+        -- find include
+        local includedir = find_path("zlib.h", pathes, {suffixes = "include"})
+        if includedir then
+
+            -- save include directory
+            table.insert(result.includedirs, includedir)
+
+            -- match version
+            if opt.version then
+                local zlib_h = io.readfile(path.join(includedir, "zlib.h"))
+                if zlib_h then
+                    local version = zlib_h:match("#define ZLIB_VERSION \"(%d+%.?%d+%.?%d+)\"")
+                    if version ~= opt.version then
+                        return 
+                    end
+                end
+            end
+        end
+
+        -- ok
+        return result
+    end
+end
-- 
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