209 lines
7.8 KiB
Lua
209 lines
7.8 KiB
Lua
local _ENV = mkmodule('argparse')
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local getopt = require('3rdparty.alt_getopt')
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local guidm = require('gui.dwarfmode')
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function processArgs(args, validArgs)
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--[[
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standardized argument processing for scripts
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-argName value
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-argName [list of values]
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-argName [list of [nested values] -that can be [whatever] format of matched square brackets]
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-arg1 \-arg3
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escape sequences
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--]]
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local result = {}
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local argName
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local bracketDepth = 0
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for i,arg in ipairs(args) do
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if argName then
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if arg == '[' then
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if bracketDepth > 0 then
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table.insert(result[argName], arg)
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end
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bracketDepth = bracketDepth+1
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elseif arg == ']' then
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bracketDepth = bracketDepth-1
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if bracketDepth > 0 then
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table.insert(result[argName], arg)
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else
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argName = nil
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end
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elseif string.sub(arg,1,1) == '\\' then
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if bracketDepth == 0 then
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result[argName] = string.sub(arg,2)
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argName = nil
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else
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table.insert(result[argName], string.sub(arg,2))
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end
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else
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if bracketDepth == 0 then
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result[argName] = arg
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argName = nil
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else
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table.insert(result[argName], arg)
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end
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end
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elseif string.sub(arg,1,1) == '-' then
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argName = string.sub(arg,2)
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if validArgs and not validArgs[argName] then
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error('error: invalid arg: ' .. i .. ': ' .. argName)
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end
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if result[argName] then
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error('duplicate arg: ' .. i .. ': ' .. argName)
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end
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if i+1 > #args or string.sub(args[i+1],1,1) == '-' then
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result[argName] = ''
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argName = nil
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else
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result[argName] = {}
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end
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else
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error('error parsing arg ' .. i .. ': ' .. arg)
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end
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end
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return result
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end
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-- processes commandline options according to optionActions and returns all
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-- argument strings that are not options. Options and non-option strings can
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-- appear in any order, and single-letter options that do not take arguments
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-- can be combined into a single option string (e.g. '-abc' is the same as
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-- '-a -b -c' if options 'a' and 'b' do not take arguments.
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--
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-- Numbers cannot be options and negative numbers (e.g. -10) will be interpreted
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-- as positional parameters and returned in the nonoptions list.
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--
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-- optionActions is a vector with elements in the following format:
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-- {shortOptionName, longOptionAlias, hasArg=boolean, handler=fn}
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-- shortOptionName and handler are required. If the option takes an argument,
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-- it will be passed to the handler function.
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-- longOptionAlias is optional.
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-- hasArg defaults to false.
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--
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-- example usage:
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--
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-- local filename = nil
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-- local open_readonly = false
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-- local nonoptions = processArgsGetopt(args, {
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-- {'r', handler=function() open_readonly = true end},
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-- {'f', 'filename', hasArg=true,
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-- handler=function(optarg) filename = optarg end}
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-- })
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--
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-- when args is {'first', '-f', 'fname', 'second'} or, equivalently,
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-- {'first', '--filename', 'fname', 'second'} (note the double dash in front of
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-- the long option alias), then filename will be fname and nonoptions will
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-- contain {'first', 'second'}.
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function processArgsGetopt(args, optionActions)
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local sh_opts, long_opts = '', {}
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local handlers = {}
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for _,optionAction in ipairs(optionActions) do
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local sh_opt,long_opt = optionAction[1], optionAction[2]
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if not sh_opt or type(sh_opt) ~= 'string' or #sh_opt ~= 1 then
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error('optionAction missing option letter at index 1')
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end
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if not optionAction.handler then
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error(string.format('handler missing for option "%s"', sh_opt))
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end
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sh_opts = sh_opts .. sh_opt
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if optionAction.hasArg then sh_opts = sh_opts .. ':' end
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handlers[sh_opt] = optionAction.handler
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if long_opt then
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long_opts[long_opt] = sh_opt
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handlers[long_opt] = optionAction.handler
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end
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end
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local opts, optargs, nonoptions =
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getopt.get_ordered_opts(args, sh_opts, long_opts)
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for i,v in ipairs(opts) do
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handlers[v](optargs[i])
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end
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return nonoptions
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end
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local function arg_error(arg_name, fmt, ...)
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local prefix = ''
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if arg_name and #arg_name > 0 then
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prefix = arg_name .. ': '
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end
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qerror(('%s'..fmt):format(prefix, ...))
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end
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-- Parses a comma-separated sequence of strings and returns a lua list. Spaces
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-- are trimmed from the strings. If <arg_name> is specified, it is used to make
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-- error messages more useful. If <list_length> is specified and greater than 0,
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-- exactly that number of elements must be found or the function will error.
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-- Example:
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-- stringSequence('hello , world,list', 'words') => {'hello', 'world', 'list'}
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function stringList(arg, arg_name, list_length)
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if not list_length then list_length = 0 end
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local list = arg:split(',')
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if list_length > 0 and #list ~= list_length then
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arg_error(arg_name,
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'expected %d elements; found %d', list_length, #list)
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end
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for i,element in ipairs(list) do
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list[i] = element:trim()
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end
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return list
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end
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-- Parses a comma-separated sequence of numeric strings and returns a list of
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-- the discovered numbers (as numbers, not strings). If <arg_name> is specified,
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-- it is used to make error messages more useful. If <list_length> is specified
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-- and greater than 0, exactly that number of elements must be found or the
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-- function will error. Example:
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-- numericSequence('10, -20 , 30.5') => {10, -20, 30.5}
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function numberList(arg, arg_name, list_length)
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local strings = stringList(arg, arg_name, list_length)
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for i,str in ipairs(strings) do
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local num = tonumber(str)
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if not num then
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arg_error(arg_name, 'invalid number: "%s"', str)
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end
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strings[i] = num
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end
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return strings
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end
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-- throws if val is not a nonnegative integer; otherwise returns val
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local function check_nonnegative_int(val, arg_name)
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if not val or val < 0 or val ~= math.floor(val) then
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arg_error(arg_name,
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'expected non-negative integer; got "%s"', tostring(val))
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end
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return val
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end
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-- Parses a comma-separated coordinate string and returns a coordinate table of
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-- {x=x, y=y, z=z}. If the string 'here' is passed, returns the coordinates of
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-- the active game cursor, or throws an error if the cursor is not active. This
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-- function also verifies that the coordinates are valid for the current map and
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-- throws if they are not (unless <skip_validation> is set to true).
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function coords(arg, arg_name, skip_validation)
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if arg == 'here' then
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local cursor = guidm.getCursorPos()
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if not cursor then
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arg_error(arg_name,
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'"here" was specified for coordinates, but the game' ..
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' cursor is not active!')
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end
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if not skip_validation and not dfhack.maps.isValidTilePos(cursor) then
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arg_error(arg_name, 'cursor coordinates not on current map!')
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end
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return cursor
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end
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local numbers = numberList(arg, arg_name, 3)
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local pos = xyz2pos(check_nonnegative_int(numbers[1]),
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check_nonnegative_int(numbers[2]),
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check_nonnegative_int(numbers[3]))
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if not skip_validation and not dfhack.maps.isValidTilePos(pos) then
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arg_error(arg_name,
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'specified coordinates not on current map: "%s"', arg)
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end
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return pos
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end
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return _ENV
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