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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 ls_remote.lua
--
-- imports
import("core.base.option")
import("lib.detect.find_tool")
import("net.proxy")
-- ls_remote to given branch, tag or commit
--
-- @param reftype the reference type, "tags", "heads" and "refs"
-- @param url the remote url, optional
--
-- @return the tags, heads or refs
--
-- @code
--
-- import("devel.git")
--
-- local tags = git.ls_remote("tags", url)
-- local heads = git.ls_remote("heads", url)
-- local refs = git.ls_remote("refs")
--
-- @endcode
--
function main(reftype, url)
-- find git
local git = assert(find_tool("git"), "git not found!")
-- init reference type
reftype = reftype or "refs"
-- init arguments
local argv = {"ls-remote", "--" .. reftype, url or "."}
-- trace
if option.get("verbose") then
print("%s %s", git.program, os.args(argv))
end
-- use proxy?
local envs
local proxy_conf = proxy.config(url)
if proxy_conf then
envs = {ALL_PROXY = proxy_conf}
end
-- get refs
local data = os.iorunv(git.program, argv, {envs = envs})
-- get commmits and tags
local refs = {}
for _, line in ipairs(data:split('\n')) do
-- parse commit and ref
local refinfo = line:split('%s')
-- get commit
local commit = refinfo[1]
-- get ref
local ref = refinfo[2]
-- save this ref
local prefix = reftype == "refs" and "refs/" or ("refs/" .. reftype .. "/")
if ref and ref:startswith(prefix) and commit and #commit == 40 then
table.insert(refs, ref:sub(#prefix + 1))
end
end
-- ok
return refs
end
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