-extends Node

-class_name PGN

-

-var movetextex = Utils.compile(

- "([NBKRQ]?[a-h]?[1-8]?[\\-x]?[a-h][1-8](?:=?[nbrqkNBRQK])?|[PNBRQK]?@[a-h][1-8]|--|Z0|0000|@@@@|O-O(?:-O)?|0-0(?:-0)?)|(\\{.*)|(;.*)|(\\$[0-9]+)|(\\()|(\\))|(\\*|1-0|0-1|1\\/2-1\\/2)|([\\?!]{1,2})"

-)

-var tagex = Utils.compile('^\\[([A-Za-z0-9_]+)\\s+"([^\\r]*)"\\]\\s*$')

-var tagnameex = Utils.compile("^[A-Za-z0-9_]+\\Z")

-

-

-func parse(pgn: String, tags := true) -> Dictionary:

- # put tags into a dictionary,

- # and the moves into a array

- var lines = Array(pgn.split("\n"))

- var headers := {}

- if tags:

- # get headers

- while !lines.empty():

- var line = lines[0].strip_edges()

- if !line or line[0] in ["%", ";"]:

- lines.pop_front()

- continue

-

- if line[0] != "[":

- break

-

- lines.pop_front()

- var tag_match = tagex.search(line)

- if tag_match:

- var cap = tag_match.strings

- if tagnameex.search(cap[1]):

- headers[cap[1]] = cap[2]

- else:

- # invalid headers

- return {}

- else:

- break

- var movetext := PoolStringArray()

- while !lines.empty():

- var line = lines.pop_front().strip_edges()

- if !line:

- break

- if line[0] in ["%", ";"]:

- continue

- for found in movetextex.search_all(line):

- if found.strings[1]:

- movetext.append(found.strings[1])

- return {"headers": headers, "moves": movetext}