add has_flags for go

1 files changed, 139 insertions, 0 deletions

diff --git a/xmake/modules/detect/tools/go/has_flags.lua b/xmake/modules/detect/tools/go/has_flags.lua
new file mode 100644
index 000000000..23ada2bc1
--- /dev/null
+++ b/xmake/modules/detect/tools/go/has_flags.lua
@@ -0,0 +1,139 @@
+--!A cross-platform 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 - 2018, TBOOX Open Source Group.
+--
+-- @author      ruki
+-- @file        has_flags.lua
+--
+
+-- imports
+import("lib.detect.cache")
+import("core.language.language")
+
+-- is linker?
+function _islinker(flags, opt)
+  
+    -- the tool kind is go-ld or gosh?
+    local toolkind = opt.toolkind or ""
+    return toolkind:endswith("-ld") or toolkind:endswith("-sh")
+end
+
+-- try running 
+function _try_running(...)
+
+    local argv = {...}
+    local errors = nil
+    return try { function () os.runv(unpack(argv)); return true end, catch { function (errs) errors = (errs or ""):trim() end }}, errors
+end
+
+-- attempt to check it from the argument list
+function _check_from_arglist(flags, opt, islinker)
+
+    -- only for compiler
+    if islinker or #flags > 1 then
+        return 
+    end
+
+    -- make cache key
+    local key = "detect.tools.go.has_flags"
+
+    -- make flags key
+    local flagskey = opt.program .. "_" .. (opt.programver or "")
+
+    -- load cache
+    local cacheinfo  = cache.load(key)
+
+    -- get all flags from argument list
+    local allflags = cacheinfo[flagskey]
+    if not allflags then
+
+        -- attempt to get argument list from the error info (help menu)
+        allflags = {}
+        try 
+        { 
+            function () os.runv(opt.program, {"tool", "compile", "--help"}) end,
+            catch 
+            {
+                function (errors) 
+                    local arglist = errors
+                    if arglist then
+                        for arg in arglist:gmatch("%s+(%-[%-%a%d]+)%s+") do
+                            allflags[arg] = true
+                        end
+                    end
+                end
+            }
+        }
+
+        -- save cache
+        cacheinfo[flagskey] = allflags
+        cache.save(key, cacheinfo)
+    end
+
+    -- ok?
+    return allflags[flags[1]]
+end
+
+-- try running to check flags
+function _check_try_running(flags, opt, islinker)
+
+    -- make an stub source file
+    local sourcefile = path.join(os.tmpdir(), "detect", "go_has_flags.go")
+    local objectfile = path.join(os.tmpdir(), "detect", "go_has_flags.o")
+    local targetfile = path.join(os.tmpdir(), "detect", "go_has_flags.bin")
+    if not os.isfile(sourcefile) then
+        io.writefile(sourcefile, "package main\nfunc main() {\n}")
+    end
+
+    -- check flags for linker
+    if islinker then
+
+        -- compile a object file first
+        if not os.isfile(objectfile) and not _try_running(opt.program, table.join("tool", "compile", "-o", objectfile, sourcefile)) then
+            return false
+        end
+
+        -- check it
+        return _try_running(opt.program, table.join("tool", "link", flags, "-o", targetfile, objectfile))
+    end
+
+    -- check flags for compiler
+    return _try_running(opt.program, table.join("tool", "compile", flags, "-o", objectfile, sourcefile))
+end
+
+-- has_flags(flags)?
+-- 
+-- @param opt   the argument options, .e.g {toolname = "", program = "", programver = "", toolkind = "[cc|cxx|ld|ar|sh|gc|mm|mxx]"}
+--
+-- @return      true or false
+--
+function main(flags, opt)
+
+    -- is linker?
+    local islinker = _islinker(flags, opt)
+
+    -- attempt to check it from the argument list
+    if _check_from_arglist(flags, opt, islinker) then
+        return true
+    end
+
+    -- try running to check it
+    return _check_try_running(flags, opt, islinker)
+end
+