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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 select_script.lua
--
-- load modules
local table = require("base/table")
local utils = require("base/utils")
local hashset = require("base/hashset")
-- match pattern, matched mode: plat|arch, excluded mode: !plat|arch
function _match_pattern(pattern, plat, arch, opt)
opt = opt or {}
local excluded = opt.excluded
local subhost = opt.subhost or os.subhost()
local subarch = opt.subarch or os.subarch()
local splitinfo = pattern:split("|", {strict = true, plain = true})
local pattern_plat = splitinfo[1]
local pattern_arch = splitinfo[2]
if pattern_plat and #pattern_plat > 0 then
local matched = false
local is_excluded_pattern = pattern_plat:find('!', 1, true)
if excluded and is_excluded_pattern then
matched = not ('!' .. plat):match('^' .. pattern_plat .. '$')
elseif not is_excluded_pattern then
matched = plat:match('^' .. pattern_plat .. '$')
end
if not matched then
return false
end
end
if pattern_arch and #pattern_arch > 0 then
-- support native arch, e.g. macosx|native
-- @see https://github.com/xmake-io/xmake/issues/4657
pattern_arch = pattern_arch:gsub("native", subarch)
local matched = false
local is_excluded_pattern = pattern_arch:find('!', 1, true)
if excluded and is_excluded_pattern then
matched = not ('!' .. arch):match('^' .. pattern_arch .. '$')
elseif not is_excluded_pattern then
matched = arch:match('^' .. pattern_arch .. '$')
end
if not matched then
return false
end
end
if not pattern_plat and not pattern_arch then
os.raise("invalid script pattern: %s", pattern)
end
return true
end
-- match patterns
function _match_patterns(patterns, plat, arch, opt)
for _, pattern in ipairs(patterns) do
if _match_pattern(pattern, plat, arch, opt) then
return true
end
end
end
-- mattch the script pattern
--
-- @note interpreter has converted pattern to a lua pattern ('*' => '.*')
--
-- matched pattern:
-- plat|arch@subhost|subarch
--
-- e.g.
--
-- `@linux`
-- `@linux|x86_64`
-- `@macosx,linux`
-- `android@macosx,linux`
-- `android|armeabi-v7a@macosx,linux`
-- `android|armeabi-v7a,iphoneos@macosx,linux|x86_64`
-- `android|armeabi-v7a@linux|x86_64`
-- `linux|*`
--
-- excluded pattern:
-- !plat|!arch@!subhost|!subarch
--
-- e.g.
--
-- `@!linux`
-- `@!linux|x86_64`
-- `@!macosx,!linux`
-- `!android@macosx,!linux`
-- `android|!armeabi-v7a@macosx,!linux`
-- `android|armeabi-v7a,!iphoneos@macosx,!linux|x86_64`
-- `!android|armeabi-v7a@!linux|!x86_64`
-- `!linux|*`
--
function _match_script_pattern(pattern, opt)
opt = opt or {}
local splitinfo = pattern:split("@", {strict = true, plain = true})
local plat_part = splitinfo[1]
local host_part = splitinfo[2]
local plat_patterns
if plat_part and #plat_part > 0 then
plat_patterns = plat_part:split(",", {plain = true})
end
local host_patterns
if host_part and #host_part > 0 then
host_patterns = host_part:split(",", {plain = true})
end
local plat = opt.plat or ""
local arch = opt.arch or ""
local subhost = opt.subhost or os.subhost()
local subarch = opt.subarch or os.subarch()
if plat_patterns and #plat_patterns > 0 then
if _match_patterns(plat_patterns, plat, arch, opt) then
if host_patterns and #host_patterns > 0 and
not _match_patterns(host_patterns, subhost, subarch, opt) then
return false
end
return true
end
else
if host_patterns and #host_patterns > 0 then
return _match_patterns(host_patterns, subhost, subarch, opt)
end
end
end
-- match the script expression pattern
--
-- e.g.
-- !wasm|!arm* and !cross|!arm*
-- wasm|!arm* or cross
-- (!macosx and !iphoneos) or (!linux|!arm* and !cross|!arm*)
--
function _match_script(pattern, opt)
local idx = 0
local funcs = {}
local keywords = hashset.of("and", "or")
local has_logical_op = false
local pattern_expr = pattern:gsub("[^%(%)%s]+", function (w)
if keywords:has(w) then
has_logical_op = true
return
end
local name = "func_" .. idx
local func = function ()
return _match_script_pattern(w, opt)
end
funcs[name] = func
idx = idx + 1
return name .. "()"
end)
if has_logical_op then
local script = assert(load("return (" .. pattern_expr .. ")"), "invalid pattern: " .. pattern)
setfenv(script, funcs)
local ok, results = utils.trycall(script)
if not ok then
os.raise("invalid pattern: %s, error: %s", pattern, results or "unknown")
end
return results
else
return _match_script_pattern(pattern, opt)
end
end
-- select the matched pattern script for the current platform/architecture
function select_script(scripts, opt)
opt = opt or {}
local result = nil
if type(scripts) == "function" then
result = scripts
elseif type(scripts) == "table" then
local script_matched
for pattern, script in pairs(scripts) do
if not pattern:startswith("__") and _match_script(pattern, opt) then
script_matched = script
break
end
end
if not script_matched then
local scripts_fallback = {}
local patterns_fallback = {}
local excluded_opt = table.join(opt, {excluded = true})
for pattern, script in pairs(scripts) do
if not pattern:startswith("__") and _match_script(pattern, excluded_opt) then
table.insert(scripts_fallback, script)
table.insert(patterns_fallback, pattern)
end
end
script_matched = scripts_fallback[1]
if script_matched and #scripts_fallback > 0 then
local conflict_patterns = {patterns_fallback[1]}
for idx, script in ipairs(scripts_fallback) do
local pattern = patterns_fallback[idx]
if script ~= script_matched then
table.insert(conflict_patterns, pattern)
end
end
if #conflict_patterns > 1 then
utils.warning("multiple script patterns are matched, %s", table.concat(conflict_patterns, ", "))
end
end
end
result = script_matched or scripts["__generic__"]
end
return result
end
return select_script
|
