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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 path.lua
--
-- define module: path
local path = path or {}
-- load modules
local string = require("base/string")
-- get the directory of the path
function path.directory(p, sep)
local i = 0
if sep then
-- if the path has been normalized, we can quickly find it with a unique path separator prompt
i = p:lastof(sep, true) or 0
else
i = math.max(p:lastof('/', true) or 0, p:lastof('\\', true) or 0)
end
if i > 0 then
if i > 1 then i = i - 1 end
return p:sub(1, i)
else
return "."
end
end
-- get the filename of the path
function path.filename(p, sep)
local i = 0
if sep then
-- if the path has been normalized, we can quickly find it with a unique path separator prompt
i = p:lastof(sep, true) or 0
else
i = math.max(p:lastof('/', true) or 0, p:lastof('\\', true) or 0)
end
if i > 0 then
return p:sub(i + 1)
else
return p
end
end
-- get the basename of the path
function path.basename(p)
local name = path.filename(p)
local i = name:lastof(".", true)
if i then
return name:sub(1, i - 1)
else
return name
end
end
-- get the file extension of the path: .xxx
function path.extension(p, level)
local i = p:lastof(".", true)
if i then
if level and level > 1 then
return path.extension(p:sub(1, i - 1), level - 1) .. p:sub(i)
end
return p:sub(i)
else
return ""
end
end
-- join path
function path.join(p, ...)
for _, name in ipairs({...}) do
p = p .. "/" .. name
end
return path.translate(p)
end
-- split path by the separator
function path.split(p)
return p:split("[/\\]")
end
-- get the path seperator
function path.sep()
local sep = path._SEP
if not sep then
sep = xmake._FEATURES.path_sep
path._SEP = sep
end
return sep
end
-- get the path seperator of environment variable
function path.envsep()
local envsep = path._ENVSEP
if not envsep then
envsep = xmake._FEATURES.path_envsep
path._ENVSEP = envsep
end
return envsep
end
-- split environment variable with `path.envsep()`,
-- also handles more speical cases such as posix flags and windows quoted paths
function path.splitenv(env_path)
local result = {}
if xmake._HOST == "windows" then
while #env_path > 0 do
if env_path:startswith(path.envsep()) then
env_path = env_path:sub(2)
elseif env_path:startswith('"') then
-- path quoted with, can contain `;`
local p_end = env_path:find('"' .. path.envsep(), 2, true) or env_path:find('"$', 2) or (#env_path + 1)
table.insert(result, env_path:sub(2, p_end - 1))
env_path = env_path:sub(p_end + 1)
else
local p_end = env_path:find(path.envsep(), 2, true) or (#env_path + 1)
table.insert(result, env_path:sub(1, p_end - 1))
env_path = env_path:sub(p_end)
end
end
else
-- see https://git.kernel.org/pub/scm/utils/dash/dash.git/tree/src/exec.c?h=v0.5.9.1&id=afe0e0152e4dc12d84be3c02d6d62b0456d68580#n173
-- no escape sequences, so `:` and `%` is invalid in environment variable
for _, v in ipairs(env_path:split(path.envsep(), { plain = true })) do
-- flag for shells, style `<path>%<flag>`
local flag = v:find("%", 1, true)
if flag then
v = v:sub(1, flag - 1)
end
if #v > 0 then
table.insert(result, v)
end
end
end
return result
end
-- concat environment variable with `path.envsep()`,
-- also handles more speical cases such as posix flags and windows quoted paths
function path.joinenv(env_table)
-- check
if not env_table or #env_table == 0 then
return ""
end
local envsep = path.envsep()
if xmake._HOST == "windows" then
local tab = {}
for _, v in ipairs(env_table) do
if v ~= "" then
if v:find(envsep, 1, true) then
v = '"' .. v .. '"'
end
table.insert(tab, v)
end
end
return table.concat(tab, envsep)
else
return table.concat(env_table, envsep)
end
end
-- the last character is the path seperator?
function path.islastsep(p)
local sep = p:sub(#p, #p)
return xmake._HOST == "windows" and (sep == '\\' or sep == '/') or (sep == '/')
end
-- convert path pattern to a lua pattern
function path.pattern(pattern)
-- translate wildcards, e.g. *, **
pattern = pattern:gsub("([%+%.%-%^%$%(%)%%])", "%%%1")
pattern = pattern:gsub("%*%*", "\001")
pattern = pattern:gsub("%*", "\002")
pattern = pattern:gsub("\001", ".*")
if path.sep() == '\\' then
pattern = pattern:gsub("\002", "[^/\\]*")
else
pattern = pattern:gsub("\002", "[^/]*")
end
-- case-insensitive filesystem?
if not os.fscase() then
pattern = string.ipattern(pattern, true)
end
return pattern
end
-- get cygwin-style path on msys2/cygwin, e.g. "c:\xxx" -> "/c/xxx"
function path.cygwin_path(p)
p = p:gsub("\\", "/")
local pos = p:find(":/")
if pos == 2 then
return "/" .. p:sub(1, 1) .. p:sub(3)
end
return p
end
-- return module: path
return path
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