3 from __future__ import unicode_literals
5 '''Generate header file for nanopb from a ProtoBuf FileDescriptorSet.'''
6 nanopb_version = "nanopb-0.3.6-dev"
10 from functools import reduce
13 # Add some dummy imports to keep packaging tools happy.
14 import google, distutils.util # bbfreeze seems to need these
15 import pkg_resources # pyinstaller / protobuf 2.5 seem to need these
17 # Don't care, we will error out later if it is actually important.
21 import google.protobuf.text_format as text_format
22 import google.protobuf.descriptor_pb2 as descriptor
25 *************************************************************
26 *** Could not import the Google protobuf Python libraries ***
27 *** Try installing package 'python-protobuf' or similar. ***
28 *************************************************************
33 import proto.nanopb_pb2 as nanopb_pb2
34 import proto.plugin_pb2 as plugin_pb2
37 ********************************************************************
38 *** Failed to import the protocol definitions for generator. ***
39 *** You have to run 'make' in the nanopb/generator/proto folder. ***
40 ********************************************************************
44 # ---------------------------------------------------------------------------
45 # Generation of single fields
46 # ---------------------------------------------------------------------------
51 # Values are tuple (c type, pb type, encoded size, int_size_allowed)
52 FieldD = descriptor.FieldDescriptorProto
54 FieldD.TYPE_BOOL: ('bool', 'BOOL', 1, False),
55 FieldD.TYPE_DOUBLE: ('double', 'DOUBLE', 8, False),
56 FieldD.TYPE_FIXED32: ('uint32_t', 'FIXED32', 4, False),
57 FieldD.TYPE_FIXED64: ('uint64_t', 'FIXED64', 8, False),
58 FieldD.TYPE_FLOAT: ('float', 'FLOAT', 4, False),
59 FieldD.TYPE_INT32: ('int32_t', 'INT32', 10, True),
60 FieldD.TYPE_INT64: ('int64_t', 'INT64', 10, True),
61 FieldD.TYPE_SFIXED32: ('int32_t', 'SFIXED32', 4, False),
62 FieldD.TYPE_SFIXED64: ('int64_t', 'SFIXED64', 8, False),
63 FieldD.TYPE_SINT32: ('int32_t', 'SINT32', 5, True),
64 FieldD.TYPE_SINT64: ('int64_t', 'SINT64', 10, True),
65 FieldD.TYPE_UINT32: ('uint32_t', 'UINT32', 5, True),
66 FieldD.TYPE_UINT64: ('uint64_t', 'UINT64', 10, True)
69 # Integer size overrides (from .proto settings)
71 nanopb_pb2.IS_8: 'int8_t',
72 nanopb_pb2.IS_16: 'int16_t',
73 nanopb_pb2.IS_32: 'int32_t',
74 nanopb_pb2.IS_64: 'int64_t',
77 # String types (for python 2 / python 3 compatibility)
79 strtypes = (unicode, str)
84 '''Keeps a set of nested names and formats them to C identifier.'''
85 def __init__(self, parts = ()):
86 if isinstance(parts, Names):
88 self.parts = tuple(parts)
91 return '_'.join(self.parts)
93 def __add__(self, other):
94 if isinstance(other, strtypes):
95 return Names(self.parts + (other,))
96 elif isinstance(other, tuple):
97 return Names(self.parts + other)
99 raise ValueError("Name parts should be of type str")
101 def __eq__(self, other):
102 return isinstance(other, Names) and self.parts == other.parts
104 def names_from_type_name(type_name):
105 '''Parse Names() from FieldDescriptorProto type_name'''
106 if type_name[0] != '.':
107 raise NotImplementedError("Lookup of non-absolute type names is not supported")
108 return Names(type_name[1:].split('.'))
110 def varint_max_size(max_value):
111 '''Returns the maximum number of bytes a varint can take when encoded.'''
113 max_value = 2**64 - max_value
114 for i in range(1, 11):
115 if (max_value >> (i * 7)) == 0:
117 raise ValueError("Value too large for varint: " + str(max_value))
119 assert varint_max_size(-1) == 10
120 assert varint_max_size(0) == 1
121 assert varint_max_size(127) == 1
122 assert varint_max_size(128) == 2
125 '''Class used to represent the encoded size of a field or a message.
126 Consists of a combination of symbolic sizes and integer sizes.'''
127 def __init__(self, value = 0, symbols = []):
128 if isinstance(value, EncodedSize):
129 self.value = value.value
130 self.symbols = value.symbols
131 elif isinstance(value, strtypes + (Names,)):
132 self.symbols = [str(value)]
136 self.symbols = symbols
138 def __add__(self, other):
139 if isinstance(other, int):
140 return EncodedSize(self.value + other, self.symbols)
141 elif isinstance(other, strtypes + (Names,)):
142 return EncodedSize(self.value, self.symbols + [str(other)])
143 elif isinstance(other, EncodedSize):
144 return EncodedSize(self.value + other.value, self.symbols + other.symbols)
146 raise ValueError("Cannot add size: " + repr(other))
148 def __mul__(self, other):
149 if isinstance(other, int):
150 return EncodedSize(self.value * other, [str(other) + '*' + s for s in self.symbols])
152 raise ValueError("Cannot multiply size: " + repr(other))
156 return str(self.value)
158 return '(' + str(self.value) + ' + ' + ' + '.join(self.symbols) + ')'
160 def upperlimit(self):
167 def __init__(self, names, desc, enum_options):
168 '''desc is EnumDescriptorProto'''
170 self.options = enum_options
171 self.names = names + desc.name
173 if enum_options.long_names:
174 self.values = [(self.names + x.name, x.number) for x in desc.value]
176 self.values = [(names + x.name, x.number) for x in desc.value]
178 self.value_longnames = [self.names + x.name for x in desc.value]
179 self.packed = enum_options.packed_enum
181 def has_negative(self):
182 for n, v in self.values:
187 def encoded_size(self):
188 return max([varint_max_size(v) for n,v in self.values])
191 result = 'typedef enum _%s {\n' % self.names
192 result += ',\n'.join([" %s = %d" % x for x in self.values])
196 result += ' pb_packed'
198 result += ' %s;' % self.names
200 result += '\n#define _%s_MIN %s' % (self.names, self.values[0][0])
201 result += '\n#define _%s_MAX %s' % (self.names, self.values[-1][0])
202 result += '\n#define _%s_ARRAYSIZE ((%s)(%s+1))' % (self.names, self.names, self.values[-1][0])
204 if not self.options.long_names:
205 # Define the long names always so that enum value references
206 # from other files work properly.
207 for i, x in enumerate(self.values):
208 result += '\n#define %s %s' % (self.value_longnames[i], x[0])
213 def __init__(self, worst = 0, checks = [], field_name = 'undefined'):
214 if isinstance(worst, list):
215 self.worst = max(i for i in worst if i is not None)
219 self.worst_field = field_name
222 def extend(self, extend, field_name = None):
223 self.worst = max(self.worst, extend.worst)
225 if self.worst == extend.worst:
226 self.worst_field = extend.worst_field
228 self.checks.extend(extend.checks)
231 def __init__(self, struct_name, desc, field_options):
232 '''desc is FieldDescriptorProto'''
233 self.tag = desc.number
234 self.struct_name = struct_name
235 self.union_name = None
236 self.name = desc.name
239 self.max_count = None
244 # Parse field options
245 if field_options.HasField("max_size"):
246 self.max_size = field_options.max_size
248 if field_options.HasField("max_count"):
249 self.max_count = field_options.max_count
251 if desc.HasField('default_value'):
252 self.default = desc.default_value
254 # Check field rules, i.e. required/optional/repeated.
256 if desc.label == FieldD.LABEL_REQUIRED:
257 self.rules = 'REQUIRED'
258 elif desc.label == FieldD.LABEL_OPTIONAL:
259 self.rules = 'OPTIONAL'
260 elif desc.label == FieldD.LABEL_REPEATED:
261 self.rules = 'REPEATED'
262 if self.max_count is None:
263 can_be_static = False
265 self.array_decl = '[%d]' % self.max_count
267 raise NotImplementedError(desc.label)
269 # Check if the field can be implemented with static allocation
270 # i.e. whether the data size is known.
271 if desc.type == FieldD.TYPE_STRING and self.max_size is None:
272 can_be_static = False
274 if desc.type == FieldD.TYPE_BYTES and self.max_size is None:
275 can_be_static = False
277 # Decide how the field data will be allocated
278 if field_options.type == nanopb_pb2.FT_DEFAULT:
280 field_options.type = nanopb_pb2.FT_STATIC
282 field_options.type = nanopb_pb2.FT_CALLBACK
284 if field_options.type == nanopb_pb2.FT_STATIC and not can_be_static:
285 raise Exception("Field %s is defined as static, but max_size or "
286 "max_count is not given." % self.name)
288 if field_options.type == nanopb_pb2.FT_STATIC:
289 self.allocation = 'STATIC'
290 elif field_options.type == nanopb_pb2.FT_POINTER:
291 self.allocation = 'POINTER'
292 elif field_options.type == nanopb_pb2.FT_CALLBACK:
293 self.allocation = 'CALLBACK'
295 raise NotImplementedError(field_options.type)
297 # Decide the C data type to use in the struct.
298 if desc.type in datatypes:
299 self.ctype, self.pbtype, self.enc_size, isa = datatypes[desc.type]
301 # Override the field size if user wants to use smaller integers
302 if isa and field_options.int_size != nanopb_pb2.IS_DEFAULT:
303 self.ctype = intsizes[field_options.int_size]
304 if desc.type == FieldD.TYPE_UINT32 or desc.type == FieldD.TYPE_UINT64:
305 self.ctype = 'u' + self.ctype;
306 elif desc.type == FieldD.TYPE_ENUM:
308 self.ctype = names_from_type_name(desc.type_name)
309 if self.default is not None:
310 self.default = self.ctype + self.default
311 self.enc_size = None # Needs to be filled in when enum values are known
312 elif desc.type == FieldD.TYPE_STRING:
313 self.pbtype = 'STRING'
315 if self.allocation == 'STATIC':
317 self.array_decl += '[%d]' % self.max_size
318 self.enc_size = varint_max_size(self.max_size) + self.max_size
319 elif desc.type == FieldD.TYPE_BYTES:
320 self.pbtype = 'BYTES'
321 if self.allocation == 'STATIC':
322 self.ctype = self.struct_name + self.name + 't'
323 self.enc_size = varint_max_size(self.max_size) + self.max_size
324 elif self.allocation == 'POINTER':
325 self.ctype = 'pb_bytes_array_t'
326 elif desc.type == FieldD.TYPE_MESSAGE:
327 self.pbtype = 'MESSAGE'
328 self.ctype = self.submsgname = names_from_type_name(desc.type_name)
329 self.enc_size = None # Needs to be filled in after the message type is available
331 raise NotImplementedError(desc.type)
333 def __lt__(self, other):
334 return self.tag < other.tag
338 if self.allocation == 'POINTER':
339 if self.rules == 'REPEATED':
340 result += ' pb_size_t ' + self.name + '_count;\n'
342 if self.pbtype == 'MESSAGE':
343 # Use struct definition, so recursive submessages are possible
344 result += ' struct _%s *%s;' % (self.ctype, self.name)
345 elif self.rules == 'REPEATED' and self.pbtype in ['STRING', 'BYTES']:
346 # String/bytes arrays need to be defined as pointers to pointers
347 result += ' %s **%s;' % (self.ctype, self.name)
349 result += ' %s *%s;' % (self.ctype, self.name)
350 elif self.allocation == 'CALLBACK':
351 result += ' pb_callback_t %s;' % self.name
353 if self.rules == 'OPTIONAL' and self.allocation == 'STATIC':
354 result += ' bool has_' + self.name + ';\n'
355 elif self.rules == 'REPEATED' and self.allocation == 'STATIC':
356 result += ' pb_size_t ' + self.name + '_count;\n'
357 result += ' %s %s%s;' % (self.ctype, self.name, self.array_decl)
361 '''Return definitions for any special types this field might need.'''
362 if self.pbtype == 'BYTES' and self.allocation == 'STATIC':
363 result = 'typedef PB_BYTES_ARRAY_T(%d) %s;\n' % (self.max_size, self.ctype)
368 def get_dependencies(self):
369 '''Get list of type names used by this field.'''
370 if self.allocation == 'STATIC':
371 return [str(self.ctype)]
375 def get_initializer(self, null_init, inner_init_only = False):
376 '''Return literal expression for this field's default value.
377 null_init: If True, initialize to a 0 value instead of default from .proto
378 inner_init_only: If True, exclude initialization for any count/has fields
382 if self.pbtype == 'MESSAGE':
384 inner_init = '%s_init_zero' % self.ctype
386 inner_init = '%s_init_default' % self.ctype
387 elif self.default is None or null_init:
388 if self.pbtype == 'STRING':
390 elif self.pbtype == 'BYTES':
391 inner_init = '{0, {0}}'
392 elif self.pbtype in ('ENUM', 'UENUM'):
393 inner_init = '(%s)0' % self.ctype
397 if self.pbtype == 'STRING':
398 inner_init = self.default.replace('"', '\\"')
399 inner_init = '"' + inner_init + '"'
400 elif self.pbtype == 'BYTES':
401 data = ['0x%02x' % ord(c) for c in self.default]
403 inner_init = '{0, {0}}'
405 inner_init = '{%d, {%s}}' % (len(data), ','.join(data))
406 elif self.pbtype in ['FIXED32', 'UINT32']:
407 inner_init = str(self.default) + 'u'
408 elif self.pbtype in ['FIXED64', 'UINT64']:
409 inner_init = str(self.default) + 'ull'
410 elif self.pbtype in ['SFIXED64', 'INT64']:
411 inner_init = str(self.default) + 'll'
413 inner_init = str(self.default)
419 if self.allocation == 'STATIC':
420 if self.rules == 'REPEATED':
422 outer_init += ', '.join([inner_init] * self.max_count)
424 elif self.rules == 'OPTIONAL':
425 outer_init = 'false, ' + inner_init
427 outer_init = inner_init
428 elif self.allocation == 'POINTER':
429 if self.rules == 'REPEATED':
430 outer_init = '0, NULL'
433 elif self.allocation == 'CALLBACK':
434 if self.pbtype == 'EXTENSION':
437 outer_init = '{{NULL}, NULL}'
441 def default_decl(self, declaration_only = False):
442 '''Return definition for this field's default value.'''
443 if self.default is None:
447 default = self.get_initializer(False, True)
450 if self.pbtype == 'STRING':
451 if self.allocation != 'STATIC':
452 return None # Not implemented
453 array_decl = '[%d]' % self.max_size
454 elif self.pbtype == 'BYTES':
455 if self.allocation != 'STATIC':
456 return None # Not implemented
459 return 'extern const %s %s_default%s;' % (ctype, self.struct_name + self.name, array_decl)
461 return 'const %s %s_default%s = %s;' % (ctype, self.struct_name + self.name, array_decl, default)
464 '''Return the #define for the tag number of this field.'''
465 identifier = '%s_%s_tag' % (self.struct_name, self.name)
466 return '#define %-40s %d\n' % (identifier, self.tag)
468 def pb_field_t(self, prev_field_name):
469 '''Return the pb_field_t initializer to use in the constant array.
470 prev_field_name is the name of the previous field or None.
473 if self.rules == 'ONEOF':
475 result = ' PB_ANONYMOUS_ONEOF_FIELD(%s, ' % self.union_name
477 result = ' PB_ONEOF_FIELD(%s, ' % self.union_name
479 result = ' PB_FIELD('
481 result += '%3d, ' % self.tag
482 result += '%-8s, ' % self.pbtype
483 result += '%s, ' % self.rules
484 result += '%-8s, ' % self.allocation
485 result += '%s, ' % ("FIRST" if not prev_field_name else "OTHER")
486 result += '%s, ' % self.struct_name
487 result += '%s, ' % self.name
488 result += '%s, ' % (prev_field_name or self.name)
490 if self.pbtype == 'MESSAGE':
491 result += '&%s_fields)' % self.submsgname
492 elif self.default is None:
494 elif self.pbtype in ['BYTES', 'STRING'] and self.allocation != 'STATIC':
495 result += '0)' # Arbitrary size default values not implemented
496 elif self.rules == 'OPTEXT':
497 result += '0)' # Default value for extensions is not implemented
499 result += '&%s_default)' % (self.struct_name + self.name)
503 def get_last_field_name(self):
506 def largest_field_value(self):
507 '''Determine if this field needs 16bit or 32bit pb_field_t structure to compile properly.
508 Returns numeric value or a C-expression for assert.'''
510 if self.pbtype == 'MESSAGE':
511 if self.rules == 'REPEATED' and self.allocation == 'STATIC':
512 check.append('pb_membersize(%s, %s[0])' % (self.struct_name, self.name))
513 elif self.rules == 'ONEOF':
515 check.append('pb_membersize(%s, %s)' % (self.struct_name, self.name))
517 check.append('pb_membersize(%s, %s.%s)' % (self.struct_name, self.union_name, self.name))
519 check.append('pb_membersize(%s, %s)' % (self.struct_name, self.name))
521 return FieldMaxSize([self.tag, self.max_size, self.max_count],
523 ('%s.%s' % (self.struct_name, self.name)))
525 def encoded_size(self, dependencies):
526 '''Return the maximum size that this field can take when encoded,
527 including the field tag. If the size cannot be determined, returns
530 if self.allocation != 'STATIC':
533 if self.pbtype == 'MESSAGE':
535 if str(self.submsgname) in dependencies:
536 submsg = dependencies[str(self.submsgname)]
537 encsize = submsg.encoded_size(dependencies)
538 if encsize is not None:
539 # Include submessage length prefix
540 encsize += varint_max_size(encsize.upperlimit())
543 # Submessage or its size cannot be found.
544 # This can occur if submessage is defined in different
545 # file, and it or its .options could not be found.
546 # Instead of direct numeric value, reference the size that
547 # has been #defined in the other file.
548 encsize = EncodedSize(self.submsgname + 'size')
550 # We will have to make a conservative assumption on the length
551 # prefix size, though.
554 elif self.pbtype in ['ENUM', 'UENUM']:
555 if str(self.ctype) in dependencies:
556 enumtype = dependencies[str(self.ctype)]
557 encsize = enumtype.encoded_size()
559 # Conservative assumption
562 elif self.enc_size is None:
563 raise RuntimeError("Could not determine encoded size for %s.%s"
564 % (self.struct_name, self.name))
566 encsize = EncodedSize(self.enc_size)
568 encsize += varint_max_size(self.tag << 3) # Tag + wire type
570 if self.rules == 'REPEATED':
571 # Decoders must be always able to handle unpacked arrays.
572 # Therefore we have to reserve space for it, even though
573 # we emit packed arrays ourselves.
574 encsize *= self.max_count
579 class ExtensionRange(Field):
580 def __init__(self, struct_name, range_start, field_options):
581 '''Implements a special pb_extension_t* field in an extensible message
582 structure. The range_start signifies the index at which the extensions
583 start. Not necessarily all tags above this are extensions, it is merely
584 a speed optimization.
586 self.tag = range_start
587 self.struct_name = struct_name
588 self.name = 'extensions'
589 self.pbtype = 'EXTENSION'
590 self.rules = 'OPTIONAL'
591 self.allocation = 'CALLBACK'
592 self.ctype = 'pb_extension_t'
599 return ' pb_extension_t *extensions;'
607 def encoded_size(self, dependencies):
608 # We exclude extensions from the count, because they cannot be known
609 # until runtime. Other option would be to return None here, but this
610 # way the value remains useful if extensions are not used.
611 return EncodedSize(0)
613 class ExtensionField(Field):
614 def __init__(self, struct_name, desc, field_options):
615 self.fullname = struct_name + desc.name
616 self.extendee_name = names_from_type_name(desc.extendee)
617 Field.__init__(self, self.fullname + 'struct', desc, field_options)
619 if self.rules != 'OPTIONAL':
623 self.rules = 'OPTEXT'
626 '''Return the #define for the tag number of this field.'''
627 identifier = '%s_tag' % self.fullname
628 return '#define %-40s %d\n' % (identifier, self.tag)
630 def extension_decl(self):
631 '''Declaration of the extension type in the .pb.h file'''
633 msg = '/* Extension field %s was skipped because only "optional"\n' % self.fullname
634 msg +=' type of extension fields is currently supported. */\n'
637 return ('extern const pb_extension_type_t %s; /* field type: %s */\n' %
638 (self.fullname, str(self).strip()))
640 def extension_def(self):
641 '''Definition of the extension type in the .pb.c file'''
646 result = 'typedef struct {\n'
648 result += '\n} %s;\n\n' % self.struct_name
649 result += ('static const pb_field_t %s_field = \n %s;\n\n' %
650 (self.fullname, self.pb_field_t(None)))
651 result += 'const pb_extension_type_t %s = {\n' % self.fullname
654 result += ' &%s_field\n' % self.fullname
659 # ---------------------------------------------------------------------------
660 # Generation of oneofs (unions)
661 # ---------------------------------------------------------------------------
664 def __init__(self, struct_name, oneof_desc):
665 self.struct_name = struct_name
666 self.name = oneof_desc.name
668 self.pbtype = 'oneof'
670 self.allocation = 'ONEOF'
673 self.anonymous = False
675 def add_field(self, field):
676 if field.allocation == 'CALLBACK':
677 raise Exception("Callback fields inside of oneof are not supported"
678 + " (field %s)" % field.name)
680 field.union_name = self.name
681 field.rules = 'ONEOF'
682 field.anonymous = self.anonymous
683 self.fields.append(field)
684 self.fields.sort(key = lambda f: f.tag)
686 # Sort by the lowest tag number inside union
687 self.tag = min([f.tag for f in self.fields])
692 result += ' pb_size_t which_' + self.name + ";\n"
693 result += ' union {\n'
694 for f in self.fields:
695 result += ' ' + str(f).replace('\n', '\n ') + '\n'
699 result += ' } ' + self.name + ';'
703 return ''.join([f.types() for f in self.fields])
705 def get_dependencies(self):
707 for f in self.fields:
708 deps += f.get_dependencies()
711 def get_initializer(self, null_init):
712 return '0, {' + self.fields[0].get_initializer(null_init) + '}'
714 def default_decl(self, declaration_only = False):
718 return ''.join([f.tags() for f in self.fields])
720 def pb_field_t(self, prev_field_name):
721 result = ',\n'.join([f.pb_field_t(prev_field_name) for f in self.fields])
724 def get_last_field_name(self):
726 return self.fields[-1].name
728 return self.name + '.' + self.fields[-1].name
730 def largest_field_value(self):
731 largest = FieldMaxSize()
732 for f in self.fields:
733 largest.extend(f.largest_field_value())
736 def encoded_size(self, dependencies):
737 '''Returns the size of the largest oneof field.'''
738 largest = EncodedSize(0)
739 for f in self.fields:
740 size = EncodedSize(f.encoded_size(dependencies))
741 if size.value is None:
744 return None # Cannot resolve maximum of symbols
745 elif size.value > largest.value:
750 # ---------------------------------------------------------------------------
751 # Generation of messages (structures)
752 # ---------------------------------------------------------------------------
756 def __init__(self, names, desc, message_options):
762 if message_options.msgid:
763 self.msgid = message_options.msgid
765 if hasattr(desc, 'oneof_decl'):
766 for i, f in enumerate(desc.oneof_decl):
767 oneof_options = get_nanopb_suboptions(desc, message_options, self.name + f.name)
768 if oneof_options.no_unions:
769 no_unions.append(i) # No union, but add fields normally
770 elif oneof_options.type == nanopb_pb2.FT_IGNORE:
771 pass # No union and skip fields also
773 oneof = OneOf(self.name, f)
774 if oneof_options.anonymous_oneof:
775 oneof.anonymous = True
776 self.oneofs[i] = oneof
777 self.fields.append(oneof)
780 field_options = get_nanopb_suboptions(f, message_options, self.name + f.name)
781 if field_options.type == nanopb_pb2.FT_IGNORE:
784 field = Field(self.name, f, field_options)
785 if (hasattr(f, 'oneof_index') and
786 f.HasField('oneof_index') and
787 f.oneof_index not in no_unions):
788 if f.oneof_index in self.oneofs:
789 self.oneofs[f.oneof_index].add_field(field)
791 self.fields.append(field)
793 if len(desc.extension_range) > 0:
794 field_options = get_nanopb_suboptions(desc, message_options, self.name + 'extensions')
795 range_start = min([r.start for r in desc.extension_range])
796 if field_options.type != nanopb_pb2.FT_IGNORE:
797 self.fields.append(ExtensionRange(self.name, range_start, field_options))
799 self.packed = message_options.packed_struct
800 self.ordered_fields = self.fields[:]
801 self.ordered_fields.sort()
803 def get_dependencies(self):
804 '''Get list of type names that this structure refers to.'''
806 for f in self.fields:
807 deps += f.get_dependencies()
811 result = 'typedef struct _%s {\n' % self.name
813 if not self.ordered_fields:
814 # Empty structs are not allowed in C standard.
815 # Therefore add a dummy field if an empty message occurs.
816 result += ' char dummy_field;'
818 result += '\n'.join([str(f) for f in self.ordered_fields])
819 result += '\n/* @@protoc_insertion_point(struct:%s) */' % self.name
823 result += ' pb_packed'
825 result += ' %s;' % self.name
828 result = 'PB_PACKED_STRUCT_START\n' + result
829 result += '\nPB_PACKED_STRUCT_END'
834 return ''.join([f.types() for f in self.fields])
836 def get_initializer(self, null_init):
837 if not self.ordered_fields:
841 for field in self.ordered_fields:
842 parts.append(field.get_initializer(null_init))
843 return '{' + ', '.join(parts) + '}'
845 def default_decl(self, declaration_only = False):
847 for field in self.fields:
848 default = field.default_decl(declaration_only)
849 if default is not None:
850 result += default + '\n'
853 def count_required_fields(self):
854 '''Returns number of required fields inside this message'''
856 for f in self.fields:
857 if not isinstance(f, OneOf):
858 if f.rules == 'REQUIRED':
862 def count_all_fields(self):
864 for f in self.fields:
865 if isinstance(f, OneOf):
866 count += len(f.fields)
871 def fields_declaration(self):
872 result = 'extern const pb_field_t %s_fields[%d];' % (self.name, self.count_all_fields() + 1)
875 def fields_definition(self):
876 result = 'const pb_field_t %s_fields[%d] = {\n' % (self.name, self.count_all_fields() + 1)
879 for field in self.ordered_fields:
880 result += field.pb_field_t(prev)
882 prev = field.get_last_field_name()
884 result += ' PB_LAST_FIELD\n};'
887 def encoded_size(self, dependencies):
888 '''Return the maximum size that this message can take when encoded.
889 If the size cannot be determined, returns None.
891 size = EncodedSize(0)
892 for field in self.fields:
893 fsize = field.encoded_size(dependencies)
901 # ---------------------------------------------------------------------------
902 # Processing of entire .proto files
903 # ---------------------------------------------------------------------------
905 def iterate_messages(desc, names = Names()):
906 '''Recursively find all messages. For each, yield name, DescriptorProto.'''
907 if hasattr(desc, 'message_type'):
908 submsgs = desc.message_type
910 submsgs = desc.nested_type
912 for submsg in submsgs:
913 sub_names = names + submsg.name
914 yield sub_names, submsg
916 for x in iterate_messages(submsg, sub_names):
919 def iterate_extensions(desc, names = Names()):
920 '''Recursively find all extensions.
921 For each, yield name, FieldDescriptorProto.
923 for extension in desc.extension:
924 yield names, extension
926 for subname, subdesc in iterate_messages(desc, names):
927 for extension in subdesc.extension:
928 yield subname, extension
932 From http://code.activestate.com/recipes/577413-topological-sort/
933 This function is under the MIT license.
935 for k, v in list(data.items()):
936 v.discard(k) # Ignore self dependencies
937 extra_items_in_deps = reduce(set.union, list(data.values()), set()) - set(data.keys())
938 data.update(dict([(item, set()) for item in extra_items_in_deps]))
940 ordered = set(item for item,dep in list(data.items()) if not dep)
943 for item in sorted(ordered):
945 data = dict([(item, (dep - ordered)) for item,dep in list(data.items())
946 if item not in ordered])
947 assert not data, "A cyclic dependency exists amongst %r" % data
949 def sort_dependencies(messages):
950 '''Sort a list of Messages based on dependencies.'''
953 for message in messages:
954 dependencies[str(message.name)] = set(message.get_dependencies())
955 message_by_name[str(message.name)] = message
957 for msgname in toposort2(dependencies):
958 if msgname in message_by_name:
959 yield message_by_name[msgname]
961 def make_identifier(headername):
962 '''Make #ifndef identifier that contains uppercase A-Z and digits 0-9'''
964 for c in headername.upper():
972 def __init__(self, fdesc, file_options):
973 '''Takes a FileDescriptorProto and parses it.'''
975 self.file_options = file_options
976 self.dependencies = {}
979 # Some of types used in this file probably come from the file itself.
980 # Thus it has implicit dependency on itself.
981 self.add_dependency(self)
988 if self.fdesc.package:
989 base_name = Names(self.fdesc.package.split('.'))
993 for enum in self.fdesc.enum_type:
994 enum_options = get_nanopb_suboptions(enum, self.file_options, base_name + enum.name)
995 self.enums.append(Enum(base_name, enum, enum_options))
997 for names, message in iterate_messages(self.fdesc, base_name):
998 message_options = get_nanopb_suboptions(message, self.file_options, names)
1000 if message_options.skip_message:
1003 self.messages.append(Message(names, message, message_options))
1004 for enum in message.enum_type:
1005 enum_options = get_nanopb_suboptions(enum, message_options, names + enum.name)
1006 self.enums.append(Enum(names, enum, enum_options))
1008 for names, extension in iterate_extensions(self.fdesc, base_name):
1009 field_options = get_nanopb_suboptions(extension, self.file_options, names + extension.name)
1010 if field_options.type != nanopb_pb2.FT_IGNORE:
1011 self.extensions.append(ExtensionField(names, extension, field_options))
1013 def add_dependency(self, other):
1014 for enum in other.enums:
1015 self.dependencies[str(enum.names)] = enum
1017 for msg in other.messages:
1018 self.dependencies[str(msg.name)] = msg
1020 # Fix field default values where enum short names are used.
1021 for enum in other.enums:
1022 if not enum.options.long_names:
1023 for message in self.messages:
1024 for field in message.fields:
1025 if field.default in enum.value_longnames:
1026 idx = enum.value_longnames.index(field.default)
1027 field.default = enum.values[idx][0]
1029 # Fix field data types where enums have negative values.
1030 for enum in other.enums:
1031 if not enum.has_negative():
1032 for message in self.messages:
1033 for field in message.fields:
1034 if field.pbtype == 'ENUM' and field.ctype == enum.names:
1035 field.pbtype = 'UENUM'
1037 def generate_header(self, includes, headername, options):
1038 '''Generate content for a header file.
1039 Generates strings, which should be concatenated and stored to file.
1042 yield '/* Automatically generated nanopb header */\n'
1043 if options.notimestamp:
1044 yield '/* Generated by %s */\n\n' % (nanopb_version)
1046 yield '/* Generated by %s at %s. */\n\n' % (nanopb_version, time.asctime())
1048 symbol = make_identifier(headername)
1049 yield '#ifndef PB_%s_INCLUDED\n' % symbol
1050 yield '#define PB_%s_INCLUDED\n' % symbol
1052 yield options.libformat % ('pb.h')
1054 # no %s specified - use whatever was passed in as options.libformat
1055 yield options.libformat
1058 for incfile in includes:
1059 noext = os.path.splitext(incfile)[0]
1060 yield options.genformat % (noext + options.extension + '.h')
1063 yield '/* @@protoc_insertion_point(includes) */\n'
1065 yield '#if PB_PROTO_HEADER_VERSION != 30\n'
1066 yield '#error Regenerate this file with the current version of nanopb generator.\n'
1070 yield '#ifdef __cplusplus\n'
1071 yield 'extern "C" {\n'
1075 yield '/* Enum definitions */\n'
1076 for enum in self.enums:
1077 yield str(enum) + '\n\n'
1080 yield '/* Struct definitions */\n'
1081 for msg in sort_dependencies(self.messages):
1083 yield str(msg) + '\n\n'
1086 yield '/* Extensions */\n'
1087 for extension in self.extensions:
1088 yield extension.extension_decl()
1092 yield '/* Default values for struct fields */\n'
1093 for msg in self.messages:
1094 yield msg.default_decl(True)
1097 yield '/* Initializer values for message structs */\n'
1098 for msg in self.messages:
1099 identifier = '%s_init_default' % msg.name
1100 yield '#define %-40s %s\n' % (identifier, msg.get_initializer(False))
1101 for msg in self.messages:
1102 identifier = '%s_init_zero' % msg.name
1103 yield '#define %-40s %s\n' % (identifier, msg.get_initializer(True))
1106 yield '/* Field tags (for use in manual encoding/decoding) */\n'
1107 for msg in sort_dependencies(self.messages):
1108 for field in msg.fields:
1110 for extension in self.extensions:
1111 yield extension.tags()
1114 yield '/* Struct field encoding specification for nanopb */\n'
1115 for msg in self.messages:
1116 yield msg.fields_declaration() + '\n'
1119 yield '/* Maximum encoded size of messages (where known) */\n'
1120 for msg in self.messages:
1121 msize = msg.encoded_size(self.dependencies)
1122 identifier = '%s_size' % msg.name
1123 if msize is not None:
1124 yield '#define %-40s %s\n' % (identifier, msize)
1126 yield '/* %s depends on runtime parameters */\n' % identifier
1129 yield '/* Message IDs (where set with "msgid" option) */\n'
1131 yield '#ifdef PB_MSGID\n'
1132 for msg in self.messages:
1133 if hasattr(msg,'msgid'):
1134 yield '#define PB_MSG_%d %s\n' % (msg.msgid, msg.name)
1137 symbol = make_identifier(headername.split('.')[0])
1138 yield '#define %s_MESSAGES \\\n' % symbol
1140 for msg in self.messages:
1142 msize = msg.encoded_size(self.dependencies)
1143 if msize is not None:
1145 if hasattr(msg,'msgid'):
1146 yield '\tPB_MSG(%d,%s,%s) \\\n' % (msg.msgid, m, msg.name)
1149 for msg in self.messages:
1150 if hasattr(msg,'msgid'):
1151 yield '#define %s_msgid %d\n' % (msg.name, msg.msgid)
1156 yield '#ifdef __cplusplus\n'
1157 yield '} /* extern "C" */\n'
1161 yield '/* @@protoc_insertion_point(eof) */\n'
1164 def generate_source(self, headername, options):
1165 '''Generate content for a source file.'''
1167 yield '/* Automatically generated nanopb constant definitions */\n'
1168 if options.notimestamp:
1169 yield '/* Generated by %s */\n\n' % (nanopb_version)
1171 yield '/* Generated by %s at %s. */\n\n' % (nanopb_version, time.asctime())
1172 yield options.genformat % (headername)
1174 yield '/* @@protoc_insertion_point(includes) */\n'
1176 yield '#if PB_PROTO_HEADER_VERSION != 30\n'
1177 yield '#error Regenerate this file with the current version of nanopb generator.\n'
1181 for msg in self.messages:
1182 yield msg.default_decl(False)
1186 for msg in self.messages:
1187 yield msg.fields_definition() + '\n\n'
1189 for ext in self.extensions:
1190 yield ext.extension_def() + '\n'
1192 # Add checks for numeric limits
1194 largest_msg = max(self.messages, key = lambda m: m.count_required_fields())
1195 largest_count = largest_msg.count_required_fields()
1196 if largest_count > 64:
1197 yield '\n/* Check that missing required fields will be properly detected */\n'
1198 yield '#if PB_MAX_REQUIRED_FIELDS < %d\n' % largest_count
1199 yield '#error Properly detecting missing required fields in %s requires \\\n' % largest_msg.name
1200 yield ' setting PB_MAX_REQUIRED_FIELDS to %d or more.\n' % largest_count
1203 max_field = FieldMaxSize()
1204 checks_msgnames = []
1205 for msg in self.messages:
1206 checks_msgnames.append(msg.name)
1207 for field in msg.fields:
1208 max_field.extend(field.largest_field_value())
1210 worst = max_field.worst
1211 worst_field = max_field.worst_field
1212 checks = max_field.checks
1214 if worst > 255 or checks:
1215 yield '\n/* Check that field information fits in pb_field_t */\n'
1217 if worst > 65535 or checks:
1218 yield '#if !defined(PB_FIELD_32BIT)\n'
1220 yield '#error Field descriptor for %s is too large. Define PB_FIELD_32BIT to fix this.\n' % worst_field
1222 assertion = ' && '.join(str(c) + ' < 65536' for c in checks)
1223 msgs = '_'.join(str(n) for n in checks_msgnames)
1224 yield '/* If you get an error here, it means that you need to define PB_FIELD_32BIT\n'
1225 yield ' * compile-time option. You can do that in pb.h or on compiler command line.\n'
1227 yield ' * The reason you need to do this is that some of your messages contain tag\n'
1228 yield ' * numbers or field sizes that are larger than what can fit in 8 or 16 bit\n'
1229 yield ' * field descriptors.\n'
1231 yield 'PB_STATIC_ASSERT((%s), YOU_MUST_DEFINE_PB_FIELD_32BIT_FOR_MESSAGES_%s)\n'%(assertion,msgs)
1235 yield '#if !defined(PB_FIELD_16BIT) && !defined(PB_FIELD_32BIT)\n'
1237 yield '#error Field descriptor for %s is too large. Define PB_FIELD_16BIT to fix this.\n' % worst_field
1239 assertion = ' && '.join(str(c) + ' < 256' for c in checks)
1240 msgs = '_'.join(str(n) for n in checks_msgnames)
1241 yield '/* If you get an error here, it means that you need to define PB_FIELD_16BIT\n'
1242 yield ' * compile-time option. You can do that in pb.h or on compiler command line.\n'
1244 yield ' * The reason you need to do this is that some of your messages contain tag\n'
1245 yield ' * numbers or field sizes that are larger than what can fit in the default\n'
1246 yield ' * 8 bit descriptors.\n'
1248 yield 'PB_STATIC_ASSERT((%s), YOU_MUST_DEFINE_PB_FIELD_16BIT_FOR_MESSAGES_%s)\n'%(assertion,msgs)
1251 # Add check for sizeof(double)
1253 for msg in self.messages:
1254 for field in msg.fields:
1255 if field.ctype == 'double':
1260 yield '/* On some platforms (such as AVR), double is really float.\n'
1261 yield ' * These are not directly supported by nanopb, but see example_avr_double.\n'
1262 yield ' * To get rid of this error, remove any double fields from your .proto.\n'
1264 yield 'PB_STATIC_ASSERT(sizeof(double) == 8, DOUBLE_MUST_BE_8_BYTES)\n'
1267 yield '/* @@protoc_insertion_point(eof) */\n'
1269 # ---------------------------------------------------------------------------
1270 # Options parsing for the .proto files
1271 # ---------------------------------------------------------------------------
1273 from fnmatch import fnmatch
1275 def read_options_file(infile):
1276 '''Parse a separate options file to list:
1277 [(namemask, options), ...]
1280 data = infile.read()
1281 data = re.sub('/\*.*?\*/', '', data, flags = re.MULTILINE)
1282 data = re.sub('//.*?$', '', data, flags = re.MULTILINE)
1283 data = re.sub('#.*?$', '', data, flags = re.MULTILINE)
1284 for i, line in enumerate(data.split('\n')):
1289 parts = line.split(None, 1)
1292 sys.stderr.write("%s:%d: " % (infile.name, i + 1) +
1293 "Option lines should have space between field name and options. " +
1294 "Skipping line: '%s'\n" % line)
1297 opts = nanopb_pb2.NanoPBOptions()
1300 text_format.Merge(parts[1], opts)
1301 except Exception as e:
1302 sys.stderr.write("%s:%d: " % (infile.name, i + 1) +
1303 "Unparseable option line: '%s'. " % line +
1304 "Error: %s\n" % str(e))
1306 results.append((parts[0], opts))
1311 '''Ugly global variables, should find a good way to pass these.'''
1312 verbose_options = False
1313 separate_options = []
1314 matched_namemasks = set()
1316 def get_nanopb_suboptions(subdesc, options, name):
1317 '''Get copy of options, and merge information from subdesc.'''
1318 new_options = nanopb_pb2.NanoPBOptions()
1319 new_options.CopyFrom(options)
1321 # Handle options defined in a separate file
1322 dotname = '.'.join(name.parts)
1323 for namemask, options in Globals.separate_options:
1324 if fnmatch(dotname, namemask):
1325 Globals.matched_namemasks.add(namemask)
1326 new_options.MergeFrom(options)
1328 # Handle options defined in .proto
1329 if isinstance(subdesc.options, descriptor.FieldOptions):
1330 ext_type = nanopb_pb2.nanopb
1331 elif isinstance(subdesc.options, descriptor.FileOptions):
1332 ext_type = nanopb_pb2.nanopb_fileopt
1333 elif isinstance(subdesc.options, descriptor.MessageOptions):
1334 ext_type = nanopb_pb2.nanopb_msgopt
1335 elif isinstance(subdesc.options, descriptor.EnumOptions):
1336 ext_type = nanopb_pb2.nanopb_enumopt
1338 raise Exception("Unknown options type")
1340 if subdesc.options.HasExtension(ext_type):
1341 ext = subdesc.options.Extensions[ext_type]
1342 new_options.MergeFrom(ext)
1344 if Globals.verbose_options:
1345 sys.stderr.write("Options for " + dotname + ": ")
1346 sys.stderr.write(text_format.MessageToString(new_options) + "\n")
1351 # ---------------------------------------------------------------------------
1352 # Command line interface
1353 # ---------------------------------------------------------------------------
1357 from optparse import OptionParser
1359 optparser = OptionParser(
1360 usage = "Usage: nanopb_generator.py [options] file.pb ...",
1361 epilog = "Compile file.pb from file.proto by: 'protoc -ofile.pb file.proto'. " +
1362 "Output will be written to file.pb.h and file.pb.c.")
1363 optparser.add_option("-x", dest="exclude", metavar="FILE", action="append", default=[],
1364 help="Exclude file from generated #include list.")
1365 optparser.add_option("-e", "--extension", dest="extension", metavar="EXTENSION", default=".pb",
1366 help="Set extension to use instead of '.pb' for generated files. [default: %default]")
1367 optparser.add_option("-f", "--options-file", dest="options_file", metavar="FILE", default="%s.options",
1368 help="Set name of a separate generator options file.")
1369 optparser.add_option("-I", "--options-path", dest="options_path", metavar="DIR",
1370 action="append", default = [],
1371 help="Search for .options files additionally in this path")
1372 optparser.add_option("-D", "--output-dir", dest="output_dir",
1373 metavar="OUTPUTDIR", default=None,
1374 help="Output directory of .pb.h and .pb.c files")
1375 optparser.add_option("-Q", "--generated-include-format", dest="genformat",
1376 metavar="FORMAT", default='#include "%s"\n',
1377 help="Set format string to use for including other .pb.h files. [default: %default]")
1378 optparser.add_option("-L", "--library-include-format", dest="libformat",
1379 metavar="FORMAT", default='#include <%s>\n',
1380 help="Set format string to use for including the nanopb pb.h header. [default: %default]")
1381 optparser.add_option("-T", "--no-timestamp", dest="notimestamp", action="store_true", default=False,
1382 help="Don't add timestamp to .pb.h and .pb.c preambles")
1383 optparser.add_option("-q", "--quiet", dest="quiet", action="store_true", default=False,
1384 help="Don't print anything except errors.")
1385 optparser.add_option("-v", "--verbose", dest="verbose", action="store_true", default=False,
1386 help="Print more information.")
1387 optparser.add_option("-s", dest="settings", metavar="OPTION:VALUE", action="append", default=[],
1388 help="Set generator option (max_size, max_count etc.).")
1390 def parse_file(filename, fdesc, options):
1391 '''Parse a single file. Returns a ProtoFile instance.'''
1392 toplevel_options = nanopb_pb2.NanoPBOptions()
1393 for s in options.settings:
1394 text_format.Merge(s, toplevel_options)
1397 data = open(filename, 'rb').read()
1398 fdesc = descriptor.FileDescriptorSet.FromString(data).file[0]
1400 # Check if there is a separate .options file
1403 optfilename = options.options_file % os.path.splitext(filename)[0]
1405 # No %s specified, use the filename as-is
1406 optfilename = options.options_file
1409 paths = ['.'] + options.options_path
1411 if os.path.isfile(os.path.join(p, optfilename)):
1412 optfilename = os.path.join(p, optfilename)
1414 sys.stderr.write('Reading options from ' + optfilename + '\n')
1415 Globals.separate_options = read_options_file(open(optfilename, "rU"))
1418 # If we are given a full filename and it does not exist, give an error.
1419 # However, don't give error when we automatically look for .options file
1420 # with the same name as .proto.
1421 if options.verbose or had_abspath:
1422 sys.stderr.write('Options file not found: ' + optfilename + '\n')
1423 Globals.separate_options = []
1425 Globals.matched_namemasks = set()
1428 file_options = get_nanopb_suboptions(fdesc, toplevel_options, Names([filename]))
1429 f = ProtoFile(fdesc, file_options)
1430 f.optfilename = optfilename
1434 def process_file(filename, fdesc, options, other_files = {}):
1435 '''Process a single file.
1436 filename: The full path to the .proto or .pb source file, as string.
1437 fdesc: The loaded FileDescriptorSet, or None to read from the input file.
1438 options: Command line options as they come from OptionsParser.
1441 {'headername': Name of header file,
1442 'headerdata': Data for the .h header file,
1443 'sourcename': Name of the source code file,
1444 'sourcedata': Data for the .c source code file
1447 f = parse_file(filename, fdesc, options)
1449 # Provide dependencies if available
1450 for dep in f.fdesc.dependency:
1451 if dep in other_files:
1452 f.add_dependency(other_files[dep])
1454 # Decide the file names
1455 noext = os.path.splitext(filename)[0]
1456 headername = noext + options.extension + '.h'
1457 sourcename = noext + options.extension + '.c'
1458 headerbasename = os.path.basename(headername)
1460 # List of .proto files that should not be included in the C header file
1461 # even if they are mentioned in the source .proto.
1462 excludes = ['nanopb.proto', 'google/protobuf/descriptor.proto'] + options.exclude
1463 includes = [d for d in f.fdesc.dependency if d not in excludes]
1465 headerdata = ''.join(f.generate_header(includes, headerbasename, options))
1466 sourcedata = ''.join(f.generate_source(headerbasename, options))
1468 # Check if there were any lines in .options that did not match a member
1469 unmatched = [n for n,o in Globals.separate_options if n not in Globals.matched_namemasks]
1470 if unmatched and not options.quiet:
1471 sys.stderr.write("Following patterns in " + f.optfilename + " did not match any fields: "
1472 + ', '.join(unmatched) + "\n")
1473 if not Globals.verbose_options:
1474 sys.stderr.write("Use protoc --nanopb-out=-v:. to see a list of the field names.\n")
1476 return {'headername': headername, 'headerdata': headerdata,
1477 'sourcename': sourcename, 'sourcedata': sourcedata}
1480 '''Main function when invoked directly from the command line.'''
1482 options, filenames = optparser.parse_args()
1485 optparser.print_help()
1489 options.verbose = False
1491 if options.output_dir and not os.path.exists(options.output_dir):
1492 optparser.print_help()
1493 sys.stderr.write("\noutput_dir does not exist: %s\n" % options.output_dir)
1497 Globals.verbose_options = options.verbose
1498 for filename in filenames:
1499 results = process_file(filename, None, options)
1501 base_dir = options.output_dir or ''
1503 (os.path.join(base_dir, results['headername']), results['headerdata']),
1504 (os.path.join(base_dir, results['sourcename']), results['sourcedata']),
1507 if not options.quiet:
1508 paths = " and ".join([x[0] for x in to_write])
1509 sys.stderr.write("Writing to %s\n" % paths)
1511 for path, data in to_write:
1512 with open(path, 'w') as f:
1516 '''Main function when invoked as a protoc plugin.'''
1519 if sys.platform == "win32":
1521 # Set stdin and stdout to binary mode
1522 msvcrt.setmode(sys.stdin.fileno(), os.O_BINARY)
1523 msvcrt.setmode(sys.stdout.fileno(), os.O_BINARY)
1525 data = io.open(sys.stdin.fileno(), "rb").read()
1527 request = plugin_pb2.CodeGeneratorRequest.FromString(data)
1530 # Versions of Python prior to 2.7.3 do not support unicode
1531 # input to shlex.split(). Try to convert to str if possible.
1532 params = str(request.parameter)
1533 except UnicodeEncodeError:
1534 params = request.parameter
1537 args = shlex.split(params)
1538 options, dummy = optparser.parse_args(args)
1540 Globals.verbose_options = options.verbose
1542 response = plugin_pb2.CodeGeneratorResponse()
1544 # Google's protoc does not currently indicate the full path of proto files.
1545 # Instead always add the main file path to the search dirs, that works for
1548 options.options_path.append(os.path.dirname(request.file_to_generate[0]))
1550 # Process any include files first, in order to have them
1551 # available as dependencies
1553 for fdesc in request.proto_file:
1554 other_files[fdesc.name] = parse_file(fdesc.name, fdesc, options)
1556 for filename in request.file_to_generate:
1557 for fdesc in request.proto_file:
1558 if fdesc.name == filename:
1559 results = process_file(filename, fdesc, options, other_files)
1561 f = response.file.add()
1562 f.name = results['headername']
1563 f.content = results['headerdata']
1565 f = response.file.add()
1566 f.name = results['sourcename']
1567 f.content = results['sourcedata']
1569 io.open(sys.stdout.fileno(), "wb").write(response.SerializeToString())
1571 if __name__ == '__main__':
1572 # Check if we are running as a plugin under protoc
1573 if 'protoc-gen-' in sys.argv[0] or '--protoc-plugin' in sys.argv: