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|
--- Functions for command-line scripts.
--module("luarocks.command_line", package.seeall)
local command_line = {}
local unpack = unpack or table.unpack
local util = require("luarocks.util")
local cfg = require("luarocks.cfg")
local path = require("luarocks.path")
local dir = require("luarocks.dir")
local deps = require("luarocks.deps")
local fs = require("luarocks.fs")
local program = util.this_program("luarocks")
--- Display an error message and exit.
-- @param message string: The error message.
-- @param exitcode number: the exitcode to use
local function die(message, exitcode)
assert(type(message) == "string")
local ok, err = pcall(util.run_scheduled_functions)
if not ok then
util.printerr("\nLuaRocks "..cfg.program_version.." internal bug (please report at https://github.com/keplerproject/luarocks/issues):\n"..err)
end
util.printerr("\nError: "..message)
os.exit(exitcode or cfg.errorcodes.UNSPECIFIED)
end
local function replace_tree(flags, args, tree)
tree = dir.normalize(tree)
flags["tree"] = tree
local added = false
for i = 1, #args do
if args[i]:match("%-%-tree=") then
args[i] = "--tree="..tree
added = true
break
end
end
if not added then
args[#args + 1] = "--tree="..tree
end
path.use_tree(tree)
end
--- Main command-line processor.
-- Parses input arguments and calls the appropriate driver function
-- to execute the action requested on the command-line, forwarding
-- to it any additional arguments passed by the user.
-- Uses the global table "commands", which contains
-- the loaded modules representing commands.
-- @param ... string: Arguments given on the command-line.
function command_line.run_command(...)
local args = {...}
local cmdline_vars = {}
for i = #args, 1, -1 do
local arg = args[i]
if arg:match("^[^-][^=]*=") then
local var, val = arg:match("^([A-Z_][A-Z0-9_]*)=(.*)")
if val then
cmdline_vars[var] = val
table.remove(args, i)
else
die("Invalid assignment: "..arg)
end
end
end
local nonflags = { util.parse_flags(unpack(args)) }
local flags = table.remove(nonflags, 1)
if flags.ERROR then
die(flags.ERROR.." See --help.")
end
if flags["from"] then flags["server"] = flags["from"] end
if flags["only-from"] then flags["only-server"] = flags["only-from"] end
if flags["only-sources-from"] then flags["only-sources"] = flags["only-sources-from"] end
if flags["to"] then flags["tree"] = flags["to"] end
if flags["nodeps"] then
flags["deps-mode"] = "none"
table.insert(args, "--deps-mode=none")
end
cfg.flags = flags
local command
if flags["verbose"] then -- setting it in the config file will kick-in earlier in the process
cfg.verbose = true
fs.verbose()
end
if flags["timeout"] then -- setting it in the config file will kick-in earlier in the process
local timeout = tonumber(flags["timeout"])
if timeout then
cfg.connection_timeout = timeout
else
die "Argument error: --timeout expects a numeric argument."
end
end
if flags["version"] then
util.printout(program.." "..cfg.program_version)
util.printout(program_description)
util.printout()
os.exit(cfg.errorcodes.OK)
elseif flags["help"] or #nonflags == 0 then
command = "help"
args = nonflags
else
command = nonflags[1]
for i, arg in ipairs(args) do
if arg == command then
table.remove(args, i)
break
end
end
end
command = command:gsub("-", "_")
if cfg.local_by_default then
flags["local"] = true
end
if flags["deps-mode"] and not deps.check_deps_mode_flag(flags["deps-mode"]) then
die("Invalid entry for --deps-mode.")
end
if flags["branch"] then
cfg.branch = flags["branch"]
end
if flags["tree"] then
local named = false
for _, tree in ipairs(cfg.rocks_trees) do
if type(tree) == "table" and flags["tree"] == tree.name then
if not tree.root then
die("Configuration error: tree '"..tree.name.."' has no 'root' field.")
end
replace_tree(flags, args, tree.root)
named = true
break
end
end
if not named then
local fs = require("luarocks.fs")
local root_dir = fs.absolute_name(flags["tree"])
replace_tree(flags, args, root_dir)
end
elseif flags["local"] then
if not cfg.home_tree then
die("The --local flag is meant for operating in a user's home directory.\n"..
"You are running as a superuser, which is intended for system-wide operation.\n"..
"To force using the superuser's home, use --tree explicitly.")
end
replace_tree(flags, args, cfg.home_tree)
else
local trees = cfg.rocks_trees
path.use_tree(trees[#trees])
end
if type(cfg.root_dir) == "string" then
cfg.root_dir = cfg.root_dir:gsub("/+$", "")
else
cfg.root_dir.root = cfg.root_dir.root:gsub("/+$", "")
end
cfg.rocks_dir = cfg.rocks_dir:gsub("/+$", "")
cfg.deploy_bin_dir = cfg.deploy_bin_dir:gsub("/+$", "")
cfg.deploy_lua_dir = cfg.deploy_lua_dir:gsub("/+$", "")
cfg.deploy_lib_dir = cfg.deploy_lib_dir:gsub("/+$", "")
cfg.variables.ROCKS_TREE = cfg.rocks_dir
cfg.variables.SCRIPTS_DIR = cfg.deploy_bin_dir
if flags["server"] then
local protocol, path = dir.split_url(flags["server"])
table.insert(cfg.rocks_servers, 1, protocol.."://"..path)
end
if flags["only-server"] then
cfg.rocks_servers = { flags["only-server"] }
end
if flags["only-sources"] then
cfg.only_sources_from = flags["only-sources"]
end
if command ~= "help" then
for k, v in pairs(cmdline_vars) do
cfg.variables[k] = v
end
end
if not fs.current_dir() or fs.current_dir() == "" then
die("Current directory does not exist. Please run LuaRocks from an existing directory.")
end
if commands[command] then
-- TODO the interface of run should be modified, to receive the
-- flags table and the (possibly unpacked) nonflags arguments.
-- This would remove redundant parsing of arguments.
-- I'm not changing this now to avoid messing with the run()
-- interface, which I know some people use (even though
-- I never published it as a public API...)
local cmd = require(commands[command])
local xp, ok, err, exitcode = xpcall(function() return cmd.run(unpack(args)) end, function(err)
die(debug.traceback("LuaRocks "..cfg.program_version
.." bug (please report at https://github.com/keplerproject/luarocks/issues).\n"
..err, 2), cfg.errorcodes.CRASH)
end)
if xp and (not ok) then
die(err, exitcode)
end
else
die("Unknown command: "..command)
end
util.run_scheduled_functions()
end
return command_line
|
