Created
June 1, 2020 21:43
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kaitai struct for AppleScript file
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| meta: | |
| id: apple_script | |
| file-extension: scpt | |
| application: AppleScript files | |
| endian: be | |
| ks-opaque-types: true | |
| seq: | |
| - id: magic | |
| size: 4 | |
| contents: "Fasd" | |
| - id: uas_magic | |
| size: 4 | |
| contents: "UAS " | |
| - id: version | |
| type: u1 | |
| repeat: expr | |
| repeat-expr: 4 | |
| - id: subversion | |
| type: u1 | |
| repeat: expr | |
| repeat-expr: 4 | |
| if: version[0] >= 0x31 and version[1] >= 0x2e and version[2] >= 0x31 and version[3] >= 0x30 | |
| - id: root | |
| type: fas_object | |
| types: | |
| fas_object: | |
| seq: | |
| - id: header | |
| type: fas_header | |
| process: register_object(_root, _parent) | |
| size: 5 | |
| - id: body | |
| type: | |
| switch-on: header.type | |
| cases: | |
| 1: symbol | |
| 2: list | |
| 3: u2_inlined | |
| 4: value_block | |
| 6: record | |
| 7: s4 | |
| 8: f8 | |
| 9: u1 | |
| 10: code_identifier | |
| 11: user_identifier | |
| 12: string | |
| 13: command_block | |
| 14: value_block | |
| 15: data_block | |
| 16: untyped_pointer_block | |
| 17: untyped_data_block | |
| 19: untyped_long_data_block | |
| u2_inlined: | |
| instances: | |
| value: | |
| value: _parent.header.inlined | |
| symbol: | |
| seq: | |
| - id: num | |
| type: u8 | |
| if: _parent.header.inlined != 0 | |
| record: | |
| seq: | |
| - id: a_id | |
| type: ref | |
| if: _parent.header.inlined == 3 | |
| - id: b_id | |
| type: ref | |
| if: _parent.header.inlined == 3 | |
| - id: next_id | |
| type: ref | |
| if: _parent.header.inlined == 3 | |
| - id: a | |
| type: fas_object | |
| if: _parent.header.inlined == 3 and not a_id.exists.as<bool> | |
| - id: b | |
| type: fas_object | |
| if: _parent.header.inlined == 3 and not b_id.exists.as<bool> | |
| - id: next | |
| type: fas_object | |
| if: _parent.header.inlined == 3 and not b_id.exists.as<bool> | |
| fas_header: | |
| seq: | |
| - id: type | |
| type: u1 | |
| - id: ref | |
| type: s2 | |
| - id: inlined | |
| type: u2 | |
| value_block: | |
| seq: | |
| - id: c | |
| type: u1 | |
| - id: ref | |
| type: ref | |
| repeat: expr | |
| repeat-expr: _parent.header.inlined | |
| - id: ref_counter | |
| process: count_new(ref) | |
| size: 0 | |
| - id: body | |
| type: fas_object | |
| repeat: expr | |
| repeat-expr: ref_counter.as<u2> | |
| if: _parent.header.inlined != 0 or c != 15 | |
| data_block: | |
| seq: | |
| - id: t | |
| type: u1 | |
| - id: desc | |
| if: t == 8 | |
| type: descriptor | |
| size: _parent.header.inlined | |
| - id: content | |
| if: t != 8 | |
| size: _parent.header.inlined | |
| descriptor: | |
| seq: | |
| - id: a | |
| type: u8 | |
| - id: b | |
| type: u4 | |
| - id: c | |
| size: 70 | |
| - id: d | |
| type: u4 | |
| - id: e | |
| type: u4 | |
| - id: type | |
| type: u4 | |
| - id: content | |
| size: _parent._parent.header.inlined - 94 | |
| untyped_pointer_block: | |
| seq: | |
| - id: ref | |
| type: ref | |
| repeat: expr | |
| repeat-expr: _parent.header.inlined | |
| - id: ref_counter | |
| process: count_new(ref) | |
| size: 0 | |
| - id: body | |
| type: fas_object | |
| repeat: expr | |
| repeat-expr: ref_counter.as<u2> | |
| code_identifier: | |
| seq: | |
| - id: c | |
| type: u1 | |
| - id: body | |
| type: | |
| switch-on: c | |
| cases: | |
| 0x0b: u8 | |
| # class identifiers | |
| 0x0a: u4 | |
| 0x2f: u4 | |
| 0x2e: resource_identifier | |
| resource_identifier: | |
| seq: | |
| - id: identifier | |
| type: u4 | |
| repeat: expr | |
| repeat-expr: 6 | |
| user_identifier: | |
| seq: | |
| - id: c | |
| type: u1 | |
| doc: | | |
| should be 0x30 | |
| - id: a_len | |
| type: u2 | |
| - id: a | |
| size: a_len | |
| - id: b_len | |
| type: u2 | |
| - id: b | |
| size: b_len | |
| untyped_data_block: | |
| seq: | |
| - id: content | |
| size: _parent.header.inlined | |
| untyped_long_data_block: | |
| seq: | |
| - id: length | |
| type: u4 | |
| - id: content | |
| size: length | |
| list: | |
| seq: | |
| - id: value_id | |
| type: ref | |
| if: _parent.header.inlined == 2 | |
| - id: next_id | |
| type: ref | |
| if: _parent.header.inlined == 2 | |
| - id: value | |
| type: fas_object | |
| if: _parent.header.inlined == 2 and not value_id.exists.as<bool> | |
| - id: next | |
| type: fas_object | |
| if: _parent.header.inlined == 2 and not next_id.exists.as<bool> | |
| command_block: | |
| seq: | |
| - id: type_id | |
| type: u1 | |
| - id: subtype_id | |
| type: u2 | |
| - id: bytecode_start | |
| type: u2 | |
| - id: bytecode_end | |
| type: u2 | |
| - id: ref | |
| type: ref | |
| repeat: expr | |
| repeat-expr: _parent.header.inlined | |
| - id: ref_counter | |
| process: count_new(ref) | |
| size: 0 | |
| - id: body | |
| type: fas_object | |
| repeat: expr | |
| repeat-expr: ref_counter.as<u2> | |
| string: | |
| seq: | |
| - id: content_size | |
| type: u2 | |
| - id: content | |
| size: content_size | |
| - id: style_size | |
| type: u2 | |
| - id: style | |
| size: style_size | |
| ref: | |
| seq: | |
| - id: id | |
| type: s2 | |
| # boolean type | |
| - id: exists | |
| size: 0 | |
| process: ref_exists(_root, id) |
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| # Needed after generating python bindings | |
| import struct | |
| class RegisterObject: | |
| def __init__(self, root, obj): | |
| self.root = root | |
| self.obj = obj | |
| if not hasattr(self.root, '_table'): | |
| self.root._table = {} | |
| def decode(self, header): | |
| ref_id, = struct.unpack(">H", header[1:3]) | |
| self.root._table[ref_id] = self.obj | |
| return header | |
| class CountNew: | |
| def __init__(self, refs): | |
| self.refs = refs | |
| def decode(self, _): | |
| return sum(not ref.exists for ref in self.refs) | |
| class RefExists: | |
| def __init__(self, root, id): | |
| self.root = root | |
| self.id = id | |
| def decode(self, _): | |
| return self.id >= 0 and self.id in self.root._table |
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