140 lines
3.8 KiB
Python
Executable File
140 lines
3.8 KiB
Python
Executable File
#!/usr/bin/env python2
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import sys
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import os
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from google.protobuf.internal.enum_type_wrapper import EnumTypeWrapper
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def process_type(t, cls):
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imports = ["from protobuf import protobuf as p",]
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out = ["t = p.MessageType()", ]
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print(" * type %s" % t)
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TYPE_STRING = 9
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TYPE_BYTES = 12
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TYPE_MESSAGE = 11
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for v in sorted(cls.DESCRIPTOR.fields_by_name.values(), key=lambda x: x.number):
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number = v.number
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fieldname = v.name
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type = None
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repeated = v.label == 3
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required = v.label == 2
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#print v.has_default_value, v.default_value
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if v.type in (4, 13, 14):
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# TYPE_UINT64 = 4
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# TYPE_UINT32 = 13
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# TYPE_ENUM = 14
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type = 'p.UVarintType'
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elif v.type == 9:
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# TYPE_STRING = 9
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type = 'p.UnicodeType'
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elif v.type == 8:
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# TYPE_BOOL = 8
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type = 'p.BoolType'
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elif v.type == 12:
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# TYPE_BYTES = 12
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type = 'p.BytesType'
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elif v.type == 11:
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# TYPE_MESSAGE = 1
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type = "p.EmbeddedMessage(%s)" % v.message_type.name
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imports.append("from .%s import %s" % (v.message_type.name, v.message_type.name))
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else:
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raise Exception("Unknown field type %s for field %s" % (v.type, k))
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if repeated:
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flags = ', flags=p.FLAG_REPEATED'
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elif required:
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flags = ', flags=p.FLAG_REQUIRED'
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else:
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flags = ''
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if v.has_default_value:
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default = ', default=%s' % repr(v.default_value)
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else:
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default = ''
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out.append("t.add_field(%d, '%s', %s%s%s)" % \
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(number, fieldname, type, flags, default))
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#print fieldname, number, type, repeated, default
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#print v.__dict__
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#print v.CPPTYPE_STRING
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#print v.LABEL_REPEATED
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#print v.enum_type
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# v.has_default_value, v.default_value
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# v.label == 3 # repeated
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#print v.number
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out.append("%s = t" % t)
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return imports + out
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def process_enum(t, cls):
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out = []
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print(" * enum %s" % t)
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for k, v in cls.items():
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# Remove type name from the beginning of the constant
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# For example "PinMatrixRequestType_Current" -> "Current"
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if k.startswith("%s_" % t):
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k = k.replace("%s_" % t, '')
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# If type ends with *Type, but constant use type name without *Type, remove it too :)
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# For example "ButtonRequestType & ButtonRequest_Other" => "Other"
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if t.endswith("Type") and k.startswith("%s_" % t.replace("Type", '')):
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k = k.replace("%s_" % t.replace("Type", ''), '')
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out.append("%s = const(%s)" % (k, v))
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return out
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def process_module(mod, genpath):
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print("Processing module %s" % mod.__name__)
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types = dict([(name, cls) for name, cls in mod.__dict__.items() if isinstance(cls, type)])
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for t, cls in types.iteritems():
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out = process_type(t, cls)
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write_to_file(genpath, t, out)
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enums = dict([(name, cls) for name, cls in mod.__dict__.items() if isinstance(cls, EnumTypeWrapper)])
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for t, cls in enums.iteritems():
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out = process_enum(t, cls)
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write_to_file(genpath, t, out)
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def write_to_file(genpath, t, out):
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# Write generated sourcecode to given file
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f = open(os.path.join(genpath, "%s.py" % t), 'w')
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out = ["# Automatically generated by pb2py"] + out
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data = "\n".join(out)
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f.write(data)
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f.close()
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if __name__ == '__main__':
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if len(sys.argv) < 2:
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print("Usage: ./pb2py modulename genpath")
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sys.exit()
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modulename = sys.argv[1]
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genpath = sys.argv[2]
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# Dynamically load module from argv[1]
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tmp = __import__('pb2', globals(), locals(), ['%s_pb2' % modulename])
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mod = getattr(tmp, "%s_pb2" % modulename)
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process_module(mod, genpath)
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