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564 lines
13 KiB
Python
564 lines
13 KiB
Python
"""aetypes - Python objects representing various AE types."""
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from AppleEvents import *
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import struct
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from types import *
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import string
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#
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# convoluted, since there are cyclic dependencies between this file and
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# aetools_convert.
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#
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def pack(*args):
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from aepack import pack
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return apply(pack, args)
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def IsSubclass(cls, base):
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"""Test whether CLASS1 is the same as or a subclass of CLASS2"""
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# Loop to optimize for single inheritance
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while 1:
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if cls is base: return 1
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if len(cls.__bases__) <> 1: break
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cls = cls.__bases__[0]
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# Recurse to cope with multiple inheritance
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for c in cls.__bases__:
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if IsSubclass(c, base): return 1
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return 0
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def IsInstance(x, cls):
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"""Test whether OBJECT is an instance of (a subclass of) CLASS"""
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return type(x) is InstanceType and IsSubclass(x.__class__, cls)
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def nice(s):
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"""'nice' representation of an object"""
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if type(s) is StringType: return repr(s)
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else: return str(s)
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class Unknown:
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"""An uninterpreted AE object"""
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def __init__(self, type, data):
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self.type = type
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self.data = data
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def __repr__(self):
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return "Unknown(%s, %s)" % (`self.type`, `self.data`)
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def __aepack__(self):
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return pack(self.data, self.type)
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class Enum:
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"""An AE enumeration value"""
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def __init__(self, enum):
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self.enum = "%-4.4s" % str(enum)
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def __repr__(self):
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return "Enum(%s)" % `self.enum`
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def __str__(self):
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return string.strip(self.enum)
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def __aepack__(self):
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return pack(self.enum, typeEnumeration)
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def IsEnum(x):
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return IsInstance(x, Enum)
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def mkenum(enum):
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if IsEnum(enum): return enum
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return Enum(enum)
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class Boolean:
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"""An AE boolean value"""
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def __init__(self, bool):
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self.bool = (not not bool)
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def __repr__(self):
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return "Boolean(%s)" % `self.bool`
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def __str__(self):
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if self.bool:
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return "True"
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else:
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return "False"
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def __aepack__(self):
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return pack(struct.pack('b', self.bool), 'bool')
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def IsBoolean(x):
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return IsInstance(x, Boolean)
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def mkboolean(bool):
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if IsBoolean(bool): return bool
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return Boolean(bool)
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class Type:
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"""An AE 4-char typename object"""
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def __init__(self, type):
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self.type = "%-4.4s" % str(type)
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def __repr__(self):
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return "Type(%s)" % `self.type`
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def __str__(self):
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return string.strip(self.type)
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def __aepack__(self):
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return pack(self.type, typeType)
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def IsType(x):
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return IsInstance(x, Type)
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def mktype(type):
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if IsType(type): return type
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return Type(type)
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class Keyword:
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"""An AE 4-char keyword object"""
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def __init__(self, keyword):
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self.keyword = "%-4.4s" % str(keyword)
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def __repr__(self):
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return "Keyword(%s)" % `self.keyword`
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def __str__(self):
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return string.strip(self.keyword)
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def __aepack__(self):
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return pack(self.keyword, typeKeyword)
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def IsKeyword(x):
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return IsInstance(x, Keyword)
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class Range:
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"""An AE range object"""
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def __init__(self, start, stop):
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self.start = start
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self.stop = stop
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def __repr__(self):
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return "Range(%s, %s)" % (`self.start`, `self.stop`)
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def __str__(self):
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return "%s thru %s" % (nice(self.start), nice(self.stop))
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def __aepack__(self):
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return pack({'star': self.start, 'stop': self.stop}, 'rang')
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def IsRange(x):
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return IsInstance(x, Range)
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class Comparison:
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"""An AE Comparison"""
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def __init__(self, obj1, relo, obj2):
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self.obj1 = obj1
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self.relo = "%-4.4s" % str(relo)
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self.obj2 = obj2
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def __repr__(self):
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return "Comparison(%s, %s, %s)" % (`self.obj1`, `self.relo`, `self.obj2`)
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def __str__(self):
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return "%s %s %s" % (nice(self.obj1), string.strip(self.relo), nice(self.obj2))
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def __aepack__(self):
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return pack({'obj1': self.obj1,
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'relo': mkenum(self.relo),
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'obj2': self.obj2},
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'cmpd')
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def IsComparison(x):
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return IsInstance(x, Comparison)
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class NComparison(Comparison):
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# The class attribute 'relo' must be set in a subclass
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def __init__(self, obj1, obj2):
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Comparison.__init__(obj1, self.relo, obj2)
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class Ordinal:
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"""An AE Ordinal"""
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def __init__(self, abso):
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# self.obj1 = obj1
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self.abso = "%-4.4s" % str(abso)
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def __repr__(self):
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return "Ordinal(%s)" % (`self.abso`)
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def __str__(self):
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return "%s" % (string.strip(self.abso))
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def __aepack__(self):
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return pack(self.abso, 'abso')
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def IsOrdinal(x):
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return IsInstance(x, Ordinal)
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class NOrdinal(Ordinal):
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# The class attribute 'abso' must be set in a subclass
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def __init__(self):
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Ordinal.__init__(self, self.abso)
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class Logical:
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"""An AE logical expression object"""
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def __init__(self, logc, term):
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self.logc = "%-4.4s" % str(logc)
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self.term = term
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def __repr__(self):
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return "Logical(%s, %s)" % (`self.logc`, `self.term`)
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def __str__(self):
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if type(self.term) == ListType and len(self.term) == 2:
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return "%s %s %s" % (nice(self.term[0]),
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string.strip(self.logc),
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nice(self.term[1]))
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else:
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return "%s(%s)" % (string.strip(self.logc), nice(self.term))
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def __aepack__(self):
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return pack({'logc': mkenum(self.logc), 'term': self.term}, 'logi')
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def IsLogical(x):
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return IsInstance(x, Logical)
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class StyledText:
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"""An AE object respresenting text in a certain style"""
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def __init__(self, style, text):
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self.style = style
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self.text = text
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def __repr__(self):
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return "StyledText(%s, %s)" % (`self.style`, `self.text`)
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def __str__(self):
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return self.text
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def __aepack__(self):
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return pack({'ksty': self.style, 'ktxt': self.text}, 'STXT')
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def IsStyledText(x):
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return IsInstance(x, StyledText)
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class AEText:
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"""An AE text object with style, script and language specified"""
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def __init__(self, script, style, text):
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self.script = script
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self.style = style
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self.text = text
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def __repr__(self):
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return "AEText(%s, %s, %s)" % (`self.script`, `self.style`, `self.text`)
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def __str__(self):
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return self.text
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def __aepack__(self):
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return pack({keyAEScriptTag: self.script, keyAEStyles: self.style,
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keyAEText: self.text}, typeAEText)
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def IsAEText(x):
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return IsInstance(x, AEText)
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class IntlText:
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"""A text object with script and language specified"""
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def __init__(self, script, language, text):
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self.script = script
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self.language = language
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self.text = text
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def __repr__(self):
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return "IntlText(%s, %s, %s)" % (`self.script`, `self.language`, `self.text`)
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def __str__(self):
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return self.text
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def __aepack__(self):
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return pack(struct.pack('hh', self.script, self.language)+self.text,
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typeIntlText)
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def IsIntlText(x):
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return IsInstance(x, IntlText)
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class IntlWritingCode:
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"""An object representing script and language"""
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def __init__(self, script, language):
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self.script = script
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self.language = language
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def __repr__(self):
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return "IntlWritingCode(%s, %s)" % (`self.script`, `self.language`)
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def __str__(self):
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return "script system %d, language %d"%(self.script, self.language)
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def __aepack__(self):
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return pack(struct.pack('hh', self.script, self.language),
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typeIntlWritingCode)
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def IsIntlWritingCode(x):
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return IsInstance(x, IntlWritingCode)
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class QDPoint:
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"""A point"""
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def __init__(self, v, h):
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self.v = v
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self.h = h
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def __repr__(self):
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return "QDPoint(%s, %s)" % (`self.v`, `self.h`)
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def __str__(self):
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return "(%d, %d)"%(self.v, self.h)
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def __aepack__(self):
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return pack(struct.pack('hh', self.v, self.h),
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typeQDPoint)
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def IsQDPoint(x):
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return IsInstance(x, QDPoint)
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class QDRectangle:
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"""A rectangle"""
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def __init__(self, v0, h0, v1, h1):
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self.v0 = v0
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self.h0 = h0
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self.v1 = v1
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self.h1 = h1
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def __repr__(self):
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return "QDRectangle(%s, %s, %s, %s)" % (`self.v0`, `self.h0`,
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`self.v1`, `self.h1`)
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def __str__(self):
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return "(%d, %d)-(%d, %d)"%(self.v0, self.h0, self.v1, self.h1)
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def __aepack__(self):
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return pack(struct.pack('hhhh', self.v0, self.h0, self.v1, self.h1),
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typeQDRectangle)
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def IsQDRectangle(x):
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return IsInstance(x, QDRectangle)
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class RGBColor:
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"""An RGB color"""
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def __init__(self, r, g, b):
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self.r = r
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self.g = g
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self.b = b
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def __repr__(self):
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return "RGBColor(%s, %s, %s)" % (`self.r`, `self.g`, `self.b`)
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def __str__(self):
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return "0x%x red, 0x%x green, 0x%x blue"% (self.r, self.g, self.b)
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def __aepack__(self):
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return pack(struct.pack('hhh', self.r, self.g, self.b),
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typeRGBColor)
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def IsRGBColor(x):
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return IsInstance(x, RGBColor)
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class ObjectSpecifier:
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"""A class for constructing and manipulation AE object specifiers in python.
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An object specifier is actually a record with four fields:
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key type description
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--- ---- -----------
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'want' type 4-char class code of thing we want,
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e.g. word, paragraph or property
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'form' enum how we specify which 'want' thing(s) we want,
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e.g. by index, by range, by name, or by property specifier
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'seld' any which thing(s) we want,
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e.g. its index, its name, or its property specifier
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'from' object the object in which it is contained,
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or null, meaning look for it in the application
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Note that we don't call this class plain "Object", since that name
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is likely to be used by the application.
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"""
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def __init__(self, want, form, seld, fr = None):
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self.want = want
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self.form = form
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self.seld = seld
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self.fr = fr
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def __repr__(self):
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s = "ObjectSpecifier(%s, %s, %s" % (`self.want`, `self.form`, `self.seld`)
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if self.fr:
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s = s + ", %s)" % `self.fr`
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else:
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s = s + ")"
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return s
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def __aepack__(self):
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return pack({'want': mktype(self.want),
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'form': mkenum(self.form),
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'seld': self.seld,
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'from': self.fr},
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'obj ')
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def IsObjectSpecifier(x):
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return IsInstance(x, ObjectSpecifier)
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# Backwards compatability, sigh...
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class Property(ObjectSpecifier):
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def __init__(self, which, fr = None, want='prop'):
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ObjectSpecifier.__init__(self, want, 'prop', mktype(which), fr)
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def __repr__(self):
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if self.fr:
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return "Property(%s, %s)" % (`self.seld.type`, `self.fr`)
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else:
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return "Property(%s)" % `self.seld.type`
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def __str__(self):
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if self.fr:
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return "Property %s of %s" % (str(self.seld), str(self.fr))
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else:
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return "Property %s" % str(self.seld)
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class NProperty(ObjectSpecifier):
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# Subclasses *must* self baseclass attributes:
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# want is the type of this property
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# which is the property name of this property
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def __init__(self, fr = None):
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#try:
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# dummy = self.want
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#except:
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# self.want = 'prop'
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self.want = 'prop'
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ObjectSpecifier.__init__(self, self.want, 'prop',
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mktype(self.which), fr)
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def __repr__(self):
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rv = "Property(%s"%`self.seld.type`
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if self.fr:
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rv = rv + ", fr=%s" % `self.fr`
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if self.want != 'prop':
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rv = rv + ", want=%s" % `self.want`
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return rv + ")"
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def __str__(self):
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if self.fr:
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return "Property %s of %s" % (str(self.seld), str(self.fr))
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else:
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return "Property %s" % str(self.seld)
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class SelectableItem(ObjectSpecifier):
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def __init__(self, want, seld, fr = None):
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t = type(seld)
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if t == StringType:
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form = 'name'
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elif IsRange(seld):
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form = 'rang'
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elif IsComparison(seld) or IsLogical(seld):
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form = 'test'
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elif t == TupleType:
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# Breakout: specify both form and seld in a tuple
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# (if you want ID or rele or somesuch)
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form, seld = seld
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else:
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form = 'indx'
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ObjectSpecifier.__init__(self, want, form, seld, fr)
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class ComponentItem(SelectableItem):
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# Derived classes *must* set the *class attribute* 'want' to some constant
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# Also, dictionaries _propdict and _elemdict must be set to map property
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# and element names to the correct classes
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def __init__(self, which, fr = None):
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SelectableItem.__init__(self, self.want, which, fr)
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def __repr__(self):
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if not self.fr:
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return "%s(%s)" % (self.__class__.__name__, `self.seld`)
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return "%s(%s, %s)" % (self.__class__.__name__, `self.seld`, `self.fr`)
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def __str__(self):
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seld = self.seld
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if type(seld) == StringType:
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ss = repr(seld)
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elif IsRange(seld):
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start, stop = seld.start, seld.stop
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if type(start) == InstanceType == type(stop) and \
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start.__class__ == self.__class__ == stop.__class__:
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ss = str(start.seld) + " thru " + str(stop.seld)
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else:
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ss = str(seld)
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else:
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ss = str(seld)
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s = "%s %s" % (self.__class__.__name__, ss)
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if self.fr: s = s + " of %s" % str(self.fr)
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return s
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def __getattr__(self, name):
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if self._elemdict.has_key(name):
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cls = self._elemdict[name]
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return DelayedComponentItem(cls, self)
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if self._propdict.has_key(name):
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cls = self._propdict[name]
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return cls(self)
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raise AttributeError, name
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class DelayedComponentItem:
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def __init__(self, compclass, fr):
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self.compclass = compclass
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self.fr = fr
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def __call__(self, which):
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return self.compclass(which, self.fr)
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def __repr__(self):
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return "%s(???, %s)" % (self.__class__.__name__, `self.fr`)
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def __str__(self):
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return "selector for element %s of %s"%(self.__class__.__name__, str(self.fr))
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template = """
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class %s(ComponentItem): want = '%s'
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"""
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exec template % ("Text", 'text')
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exec template % ("Character", 'cha ')
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exec template % ("Word", 'cwor')
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exec template % ("Line", 'clin')
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exec template % ("paragraph", 'cpar')
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exec template % ("Window", 'cwin')
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exec template % ("Document", 'docu')
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exec template % ("File", 'file')
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exec template % ("InsertionPoint", 'cins')
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