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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 parse_deps.lua
--
-- imports
import("core.project.config")
import("core.project.project")
import("core.base.hashset")
-- a placeholder for spaces in path
local space_placeholder = "\001"
-- normailize path of a dependecy
function _normailize_dep(dep, projectdir)
-- escape characters, e.g. \#Qt.Widget_pch.h -> #Qt.Widget_pch.h
-- @see https://github.com/xmake-io/xmake/issues/4134
-- https://github.com/xmake-io/xmake/issues/4273
if not is_host("windows") then
dep = dep:gsub("\\(.)", "%1")
end
if path.is_absolute(dep) then
dep = path.translate(dep)
else
dep = path.absolute(dep, projectdir)
end
if dep:startswith(projectdir) then
return path.relative(dep, projectdir)
else
-- we also need to check header files outside project
-- https://github.com/xmake-io/xmake/issues/1154
return dep
end
end
-- load module mapper
function _load_module_mapper(target)
local mapper = {}
local mapperfile = path.join(config.builddir(), target:name(), "mapper.txt")
for line in io.lines(mapperfile) do
local moduleinfo = line:split(" ", {plain = true})
if #moduleinfo == 2 then
mapper[moduleinfo[1]] = moduleinfo[2]
end
end
return mapper
end
-- parse depsfiles from string
--
-- parse_deps(io.readfile(depfile, {continuation = "\\"}))
--
-- eg.
-- strcpy.o: src/tbox/libc/string/strcpy.c src/tbox/libc/string/string.h \
-- src/tbox/libc/string/prefix.h src/tbox/libc/string/../prefix.h \
-- src/tbox/libc/string/../../prefix.h \
-- src/tbox/libc/string/../../prefix/prefix.h \
-- src/tbox/libc/string/../../prefix/config.h \
-- src/tbox/libc/string/../../prefix/../config.h \
-- build/iphoneos/x86_64/release/tbox.config.h \
--
-- with c++ modules (gcc):
-- build/.objs/dependence/linux/x86_64/release/src/foo.mpp.o: src/foo.mpp\
-- build/.objs/dependence/linux/x86_64/release/src/foo.mpp.o gcm.cache/foo.gcm: bar.c++m cat.c++m\
-- foo.c++m: gcm.cache/foo.gcm\
-- .PHONY: foo.c++m\
-- gcm.cache/foo.gcm:| build/.objs/dependence/linux/x86_64/release/src/foo.mpp.o\
-- CXX_IMPORTS += bar.c++m cat.c++m\
--
function main(depsdata, opt)
-- we assume there is only one valid line
local block = 0
local results = hashset.new()
local projectdir = os.projectdir()
local line = depsdata:rtrim() -- maybe there will be an empty newline at the end. so we trim it first
local plain = {plain = true}
line = line:replace("\\ ", space_placeholder, plain)
for _, includefile in ipairs(line:split(' ', plain)) do -- it will trim all internal spaces without `{strict = true}`
local includefile = includefile
-- some gcc toolchains will some invalid paths (e.g. `d\:\xxx`), we need to fix it
-- https://github.com/xmake-io/xmake/issues/1196
if is_host("windows") and includefile:match("^%w\\:") then
includefile = includefile:replace("\\:", ":", plain)
end
if includefile:endswith(":") then -- ignore "xxx.o:" prefix
block = block + 1
if block > 1 then
-- skip other `xxx.o:` block
break
end
else
includefile = includefile:replace(space_placeholder, ' ', plain)
includefile = includefile:split("\n", plain)[1]
if #includefile > 0 then
includefile = _normailize_dep(includefile, projectdir)
if includefile then
results:insert(includefile)
end
end
end
end
-- translate .c++m module file path
-- with c++ modules (gcc):
-- CXX_IMPORTS += bar.c++m cat.c++m\
--
-- @see https://github.com/xmake-io/xmake/issues/3000
-- https://github.com/xmake-io/xmake/issues/4215
local target = opt and opt.target
if target and line:find("CXX_IMPORTS += ", 1, true) then
local mapper = _load_module_mapper(target)
local modulefiles = line:split("CXX_IMPORTS += ", plain)[2]
if modulefiles then
for _, modulefile in ipairs(modulefiles:split(' ', plain)) do
if modulefile:endswith(".c++m") then
local modulekey = modulefile:sub(1, #modulefile - 5)
local modulepath = mapper[modulekey]
if modulepath then
modulepath = _normailize_dep(modulepath, projectdir)
results:insert(modulepath)
end
end
end
end
end
return results:to_array()
end
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