Merge pull request #1751 from xmake-io/amalgamate

Support amalgamate code

1 files changed, 108 insertions, 0 deletions

diff --git a/xmake/modules/cli/amalgamate.lua b/xmake/modules/cli/amalgamate.lua
new file mode 100644
index 000000000..e495ae70b
--- /dev/null
+++ b/xmake/modules/cli/amalgamate.lua
@@ -0,0 +1,108 @@
+--!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        amalgamate.lua
+--
+
+-- imports
+import("core.base.option")
+import("core.project.config")
+import("core.project.task")
+import("core.project.project")
+
+-- the options
+local options =
+{
+    {'u', "uniqueid",  "kv", nil, "Set the unique id."       },
+    {'o', "outputdir", "kv", nil, "Set the output directory."},
+    {nil, "target",    "v",  nil, "The target name."         }
+}
+
+-- generate code
+function _generate_amalgamate_code(target, opt)
+
+    -- only for library
+    if not target:is_library() then
+        return
+    end
+
+    -- generate source code
+    local outputdir = opt.outputdir
+    local uniqueid = opt.uniqueid
+    for _, sourcebatch in pairs(target:sourcebatches()) do
+        local sourcekind = sourcebatch.sourcekind
+        if sourcekind == "cc" or sourcekind == "cxx" then
+            local outputpath = path.join(outputdir, target:name() .. (sourcekind == "cxx" and ".cpp" or ".c"))
+            local outputfile = io.open(outputpath, "w")
+            for _, sourcefile in ipairs(sourcebatch.sourcefiles) do
+                if uniqueid then
+                    outputfile:print("#define %s %s", uniqueid, "unity_" .. hash.uuid():split("-", {plain = true})[1])
+                end
+                outputfile:write(io.readfile(sourcefile))
+                if uniqueid then
+                    outputfile:print("#undef %s", uniqueid)
+                end
+            end
+            outputfile:close()
+            cprint("${bright}%s generated!", outputpath)
+        end
+    end
+
+    -- generate header file
+    local srcheaders = target:headerfiles(includedir)
+    if srcheaders and #srcheaders > 0 then
+        local outputpath = path.join(outputdir, target:name() .. ".h")
+        local outputfile = io.open(outputpath, "w")
+        for _, srcheader in ipairs(srcheaders) do
+            if uniqueid then
+                outputfile:print("#define %s %s", uniqueid, "unity_" .. hash.uuid():split("-", {plain = true})[1])
+            end
+            outputfile:write(io.readfile(srcheader))
+            if uniqueid then
+                outputfile:print("#undef %s", uniqueid)
+            end
+        end
+        outputfile:close()
+        cprint("${bright}%s generated!", outputpath)
+    end
+end
+
+-- generate amalgamate code
+--
+-- https://github.com/xmake-io/xmake/issues/1438
+--
+function main(...)
+
+    -- parse arguments
+    local argv = table.pack(...)
+    local args = option.parse(argv, options, "Generate amalgamate code.",
+                                             "",
+                                             "Usage: xmake l cli.amalgamate [options]")
+
+    -- config first
+    task.run("config")
+
+    -- generate amalgamate code
+    args.outputdir = args.outputdir or config.buildir()
+    if args.target then
+        _generate_amalgamate_code(args.target, args)
+    else
+        for _, target in ipairs(project.ordertargets()) do
+            _generate_amalgamate_code(target, args)
+        end
+    end
+end