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configfiles.lua
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configfiles.lua
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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, TBOOX Open Source Group.
--
-- @author ruki
-- @file configfiles.lua
--
-- imports
import("core.base.option")
import("core.base.semver")
import("core.project.config")
import("core.project.project")
import("core.platform.platform")
import("lib.detect.find_tool")
-- get all configuration files
function _get_configfiles()
local configfiles = {}
for _, target in pairs(project.targets()) do
if target:is_enabled() then
-- get configuration files for target
local srcfiles, dstfiles, fileinfos = target:configfiles()
for idx, srcfile in ipairs(srcfiles) do
-- get destinate file and file info
local dstfile = dstfiles[idx]
local fileinfo = fileinfos[idx]
-- get source info
local srcinfo = configfiles[dstfile]
if not srcinfo then
srcinfo = {}
configfiles[dstfile] = srcinfo
end
-- save source file
if srcinfo.srcfile then
assert(path.absolute(srcinfo.srcfile) == path.absolute(srcfile), "file(%s) and file(%s) are writing a same file(%s)", srcfile, srcinfo.srcfile, dstfile)
else
srcinfo.srcfile = srcfile
srcinfo.fileinfo = fileinfo
end
-- save targets
srcinfo.targets = srcinfo.targets or {}
table.insert(srcinfo.targets, target)
end
end
end
return configfiles
end
-- get the builtin variables
function _get_builtinvars_target(target)
-- get version variables
local builtinvars = {}
local version, version_build = target:version()
if version then
builtinvars.VERSION = version
try {function ()
local v = semver.new(version)
if v then
builtinvars.VERSION_MAJOR = v:major()
builtinvars.VERSION_MINOR = v:minor()
builtinvars.VERSION_ALTER = v:patch()
end
end}
if version_build then
builtinvars.VERSION_BUILD = version_build
end
end
return builtinvars
end
-- get the git builtin variables
function _get_builtinvars_git(builtinvars)
local cmds =
{
GIT_TAG = {"describe", "--tags"},
GIT_TAG_LONG = {"describe", "--tags", "--long"},
GIT_BRANCH = {"rev-parse", "--abbrev-ref", "HEAD"},
GIT_COMMIT = {"rev-parse", "--short", "HEAD"},
GIT_COMMIT_LONG = {"rev-parse", "HEAD"},
GIT_COMMIT_DATE = {"log", "-1", "--date=format:%Y%m%d%H%M%S", "--format=%ad"}
}
for name, argv in pairs(cmds) do
builtinvars[name] = function ()
local result
local git = find_tool("git")
if git then
result = try {function ()
return os.iorunv(git.program, argv)
end}
end
if not result then
result = "none"
end
return result:trim()
end
end
end
-- get the global builtin variables
function _get_builtinvars_global()
local builtinvars = _g.builtinvars_global
if builtinvars == nil then
builtinvars =
{
arch = config.get("arch") or os.arch()
, plat = config.get("plat") or os.host()
, host = os.host()
, mode = config.get("mode") or "release"
, debug = is_mode("debug") and 1 or 0
, os = platform.os()
}
local builtinvars_upper = {}
for name, value in pairs(builtinvars) do
builtinvars_upper[name:upper()] = type(value) == "string" and value:upper() or value
end
table.join2(builtinvars, builtinvars_upper)
_get_builtinvars_git(builtinvars)
_g.builtinvars_global = builtinvars
end
return builtinvars
end
-- generate the configuration file
function _generate_configfile(srcfile, dstfile, fileinfo, targets)
-- trace
if option.get("verbose") then
cprint("${dim}generating %s to %s ..", srcfile, dstfile)
end
-- only copy it?
local generated = false
if fileinfo.onlycopy then
if os.mtime(srcfile) > os.mtime(dstfile) then
os.cp(srcfile, dstfile)
generated = true
end
else
-- generate to the temporary file first
local dstfile_tmp = path.join(os.tmpdir(), hash.uuid4(srcfile))
os.tryrm(dstfile_tmp)
os.cp(srcfile, dstfile_tmp)
-- get all variables
local variables = fileinfo.variables or {}
for _, target in ipairs(targets) do
-- get variables from the target
for name, value in pairs(target:get("configvar")) do
if variables[name] == nil then
variables[name] = table.unwrap(value)
end
end
-- get variables from the target.options
for _, opt in ipairs(target:orderopts()) do
for name, value in pairs(opt:get("configvar")) do
if variables[name] == nil then
variables[name] = table.unwrap(value)
end
end
end
-- get variables from the target.packages
for _, pkg in ipairs(target:orderpkgs()) do
for name, value in pairs(pkg:get("configvar")) do
if variables[name] == nil then
variables[name] = table.unwrap(value)
end
end
end
-- get the builtin variables from the target
for name, value in pairs(_get_builtinvars_target(target)) do
if type(value) == "function" then
value = value()
end
if variables[name] == nil then
variables[name] = value
end
end
end
-- get the global builtin variables
for name, value in pairs(_get_builtinvars_global()) do
if type(value) == "function" then
value = value()
end
if variables[name] == nil then
variables[name] = value
end
end
-- replace all variables
local pattern = fileinfo.pattern or "%${(.-)}"
io.gsub(dstfile_tmp, "(" .. pattern .. ")", function(_, variable)
-- get variable name
variable = variable:trim()
-- is ${define variable}?
local isdefine = false
if variable:startswith("define ") then
variable = variable:split("%s")[2]
isdefine = true
end
-- is ${default variable xxx}?
local default = nil
local isdefault = false
if variable:startswith("default ") then
local varinfo = variable:split("%s")
variable = varinfo[2]
default = varinfo[3]
isdefault = true
assert(default ~= nil, "please set default value for variable(%s)", variable)
end
-- get variable value
local value = variables[variable]
if isdefine then
if value == nil then
value = ("/* #undef %s */"):format(variable)
elseif type(value) == "boolean" then
if value then
value = ("#define %s 1"):format(variable)
else
value = ("/* #define %s 0 */"):format(variable)
end
elseif type(value) == "number" then
value = ("#define %s %d"):format(variable, value)
elseif type(value) == "string" then
value = ("#define %s \"%s\""):format(variable, value)
else
raise("unknown variable(%s) type: %s", variable, type(value))
end
elseif isdefault then
if value == nil then
value = default
else
value = tostring(value)
end
else
assert(value ~= nil, "cannot get variable(%s) in %s.", variable, srcfile)
end
dprint(" > replace %s -> %s", variable, value)
if type(value) == "table" then
dprint("invalid variable value", value)
end
return value
end)
-- update file if the content is changed
if os.isfile(dstfile_tmp) then
if os.isfile(dstfile) then
if io.readfile(dstfile_tmp) ~= io.readfile(dstfile) then
os.cp(dstfile_tmp, dstfile)
generated = true
end
else
os.cp(dstfile_tmp, dstfile)
generated = true
end
end
end
-- trace
cprint("generating %s ... %s", srcfile, generated and "${color.success}${text.success}" or "${color.success}cache")
end
-- the main entry function
function main()
-- enter project directory
local oldir = os.cd(project.directory())
-- get all configuration files
local configfiles = _get_configfiles()
-- generate all configuration files
for dstfile, srcinfo in pairs(configfiles) do
_generate_configfile(srcinfo.srcfile, dstfile, srcinfo.fileinfo, srcinfo.targets)
end
-- leave project directory
os.cd(oldir)
end