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--!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, Xmake Open Source Community.
--
-- @author ruki
-- @file amalgamate.lua
--
-- imports
import("core.base.option")
import("core.base.graph")
import("core.project.config")
import("core.project.task")
import("core.project.project")
import("private.detect.check_targetnames")
-- 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." }
}
-- get include files
function _get_include_files(target, filepath)
local includes = {}
local sourcecode = io.readfile(filepath)
sourcecode = sourcecode:gsub("/%*.-%*/", "")
sourcecode = sourcecode:gsub("//.-\n", "\n")
sourcecode:gsub("#include%s+\"(.-)\"", function (include)
table.insert(includes, include)
end)
includes = table.unique(includes)
local includefiles = {}
local filedir = path.directory(filepath)
local includedirs = table.join(filedir, target:get("includedirs"))
for _, include in ipairs(includes) do
local result
for _, includedir in ipairs(includedirs) do
local includefile = path.join(includedir, include)
if os.isfile(includefile) then
includefile = path.normalize(path.absolute(includefile, os.projectdir()))
result = includefile
break
end
end
if result then
table.insert(includefiles, result)
else
wprint("#include \"%s\" not found in %s", include, filepath)
end
end
return includefiles
end
-- generate include graph
function _generate_include_graph(target, inputpaths, gh, marked)
for _, inputpath in ipairs(inputpaths) do
if not marked[inputpath] then
marked[inputpath] = true
local includefiles = _get_include_files(target, inputpath)
for _, includefile in ipairs(includefiles) do
gh:add_edge(inputpath, includefile)
end
if includefiles and #includefiles > 0 then
_generate_include_graph(target, includefiles, gh, marked)
end
end
end
end
-- generate file
function _generate_file(target, inputpaths, outputpath, uniqueid)
-- generate include graph
local gh = graph.new(true)
for idx, inputpath in ipairs(inputpaths) do
local inputpath = path.normalize(path.absolute(inputpath, os.projectdir()))
inputpaths[idx] = inputpath
gh:add_edge("__root__", inputpath)
end
_generate_include_graph(target, inputpaths, gh, {})
-- sort file paths and remove root path
local filepaths = gh:topo_sort()
table.remove(filepaths, 1)
-- generate amalgamate file
local outputfile = io.open(outputpath, "w")
for _, filepath in irpairs(filepaths) do
cprint(" ${color.dump.reference}+${clear} %s", filepath)
if uniqueid then
outputfile:print("#define %s %s", uniqueid, "unity_" .. hash.uuid():split("-", {plain = true})[1])
end
outputfile:write(io.readfile(filepath))
if uniqueid then
outputfile:print("#undef %s", uniqueid)
end
end
outputfile:close()
cprint("${bright}%s generated!", outputpath)
end
-- generate code
function _generate_amalgamate_code(target, opt)
-- only for library/binary
if not target:is_library() and not target:is_binary() then
return
end
-- generate source code
local outputdir = opt.outputdir
local uniqueid = opt.uniqueid
for _, sourcebatch in pairs(target:sourcebatches()) do
local rulename = sourcebatch.rulename
if rulename == "c.build" or rulename == "c++.build" then
local outputpath = path.join(outputdir, target:name() .. (sourcekind == "cxx" and ".cpp" or ".c"))
_generate_file(target, sourcebatch.sourcefiles, outputpath, uniqueid)
end
end
-- generate header file
local srcheaders = target:headerfiles(includedir)
if srcheaders and #srcheaders > 0 then
local outputpath = path.join(outputdir, target:name() .. ".h")
_generate_file(target, srcheaders, outputpath, uniqueid)
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.builddir()
if args.target then
local target = assert(check_targetnames(args.target))
_generate_amalgamate_code(target, args)
else
for _, target in ipairs(project.ordertargets()) do
_generate_amalgamate_code(target, args)
end
end
end
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