70 lines
2.4 KiB
GDScript3
70 lines
2.4 KiB
GDScript3
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class_name EndpointParser
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extends RefCounted
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const DEFAULT_PORT: int = 7777
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static func parse(value: String, default_port: int = DEFAULT_PORT) -> ConnectionEndpoint:
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var result := ConnectionEndpoint.new()
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result.original_display = value.strip_edges()
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result.port = default_port
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if default_port < 1 or default_port > 65535:
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result.error_message = "The configured default port is invalid."
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return result
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var input: String = result.original_display
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if input.is_empty():
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result.error_message = "Enter a hostname or IP address."
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return result
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var host: String = ""
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var port_text: String = ""
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if input.begins_with("["):
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var closing: int = input.find("]")
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if closing < 0:
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result.error_message = "The IPv6 address is missing a closing bracket."
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return result
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host = input.substr(1, closing - 1).strip_edges()
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var suffix: String = input.substr(closing + 1).strip_edges()
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if not suffix.is_empty():
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if not suffix.begins_with(":") or suffix.length() == 1:
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result.error_message = "Use [IPv6]:port for an IPv6 port."
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return result
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port_text = suffix.substr(1).strip_edges()
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elif input.contains("[") or input.contains("]"):
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result.error_message = "IPv6 brackets are malformed."
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return result
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else:
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var colon_count: int = input.count(":")
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if colon_count == 1:
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var separator: int = input.rfind(":")
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host = input.substr(0, separator).strip_edges()
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port_text = input.substr(separator + 1).strip_edges()
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else:
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# Zero colons is a hostname/IPv4 host. More than one is a raw
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# IPv6 host; an explicit port for it must use brackets.
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host = input.strip_edges()
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if host.is_empty():
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result.error_message = "The hostname or IP address is empty."
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return result
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if host.contains(" ") or host.contains("\t") or host.contains("\n"):
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result.error_message = "The hostname or IP address contains whitespace."
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return result
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if not port_text.is_empty():
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if not port_text.is_valid_int():
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result.error_message = "The port must be a number from 1 to 65535."
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return result
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result.port = int(port_text)
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if result.port < 1 or result.port > 65535:
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result.error_message = "The port must be from 1 to 65535."
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return result
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result.host = host.to_lower()
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var is_ipv6: bool = result.host.contains(":")
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result.normalized_display = (
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"[%s]:%d" % [result.host, result.port]
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if is_ipv6
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else "%s:%d" % [result.host, result.port]
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)
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return result
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