124 lines
4.8 KiB
Python
124 lines
4.8 KiB
Python
#!/usr/bin/env python3
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# -*- Coding: UTF-8 -*-
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# ---------------------------------------------------------------------------
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# Open Asset Import Library (ASSIMP)
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# ---------------------------------------------------------------------------
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#
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# Copyright (c) 2006-2020, ASSIMP Development Team
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#
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# All rights reserved.
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#
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# Redistribution and use of this software in source and binary forms,
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# with or without modification, are permitted provided that the following
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# conditions are met:
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#
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# * Redistributions of source code must retain the above
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# copyright notice, this list of conditions and the
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# following disclaimer.
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#
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# * Redistributions in binary form must reproduce the above
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# copyright notice, this list of conditions and the
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# following disclaimer in the documentation and/or other
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# materials provided with the distribution.
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#
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# * Neither the name of the ASSIMP team, nor the names of its
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# contributors may be used to endorse or promote products
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# derived from this software without specific prior
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# written permission of the ASSIMP Development Team.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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# ---------------------------------------------------------------------------
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"""Parse an EXPRESS file and extract basic information on all
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entities and data types contained"""
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import sys
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import re
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from collections import OrderedDict
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re_match_entity = re.compile(r"""
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ENTITY\s+(\w+)\s* # 'ENTITY foo'
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.*? # skip SUPERTYPE-of
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(?:SUBTYPE\s+OF\s+\((\w+)\))?; # 'SUBTYPE OF (bar);' or simply ';'
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(.*?) # 'a : atype;' (0 or more lines like this)
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(?:(?:INVERSE|UNIQUE|WHERE)\s*$.*?)? # skip the INVERSE, UNIQUE, WHERE clauses and everything behind
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END_ENTITY;
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""",re.VERBOSE|re.DOTALL|re.MULTILINE)
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re_match_type = re.compile(r"""
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TYPE\s+(\w+?)\s*=\s*((?:LIST|SET)\s*\[\d+:[\d?]+\]\s*OF)?(?:\s*UNIQUE)?\s*(\w+) # TYPE foo = LIST[1:2] of blub
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(?:(?<=ENUMERATION)\s*OF\s*\((.*?)\))?
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.*? # skip the WHERE clause
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END_TYPE;
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""",re.VERBOSE|re.DOTALL)
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re_match_field = re.compile(r"""
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\s+(\w+?)\s*:\s*(OPTIONAL)?\s*((?:LIST|SET)\s*\[\d+:[\d?]+\]\s*OF)?(?:\s*UNIQUE)?\s*(\w+?);
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""",re.VERBOSE|re.DOTALL)
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class Schema:
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def __init__(self):
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self.entities = OrderedDict()
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self.types = OrderedDict()
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class Entity:
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def __init__(self,name,parent,members):
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self.name = name
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self.parent = parent
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self.members = members
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class Field:
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def __init__(self,name,type,optional,collection):
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self.name = name
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self.type = type
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self.optional = optional
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self.collection = collection
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self.fullspec = (self.collection+' ' if self.collection else '') + self.type
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class Type:
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def __init__(self,name,aggregate,equals,enums):
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self.name = name
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self.aggregate = aggregate
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self.equals = equals
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self.enums = enums
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def read(filename, silent=False):
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schema = Schema()
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print( "Try to read EXPRESS schema file" + filename)
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with open(filename,'rt') as inp:
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contents = inp.read()
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types = re.findall(re_match_type,contents)
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for name,aggregate,equals,enums in types:
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schema.types[name] = Type(name,aggregate,equals,enums)
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entities = re.findall(re_match_entity,contents)
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for name,parent,fields_raw in entities:
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print('process entity {0}, parent is {1}'.format(name,parent)) if not silent else None
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fields = re.findall(re_match_field,fields_raw)
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members = [Field(name,type,opt,coll) for name, opt, coll, type in fields]
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print(' got {0} fields'.format(len(members))) if not silent else None
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schema.entities[name] = Entity(name,parent,members)
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return schema
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if __name__ == "__main__":
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sys.exit(read(sys.argv[1] if len(sys.argv)>1 else 'schema.exp'))
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