3 from __future__ import unicode_literals
5 '''Generate header file for nanopb from a ProtoBuf FileDescriptorSet.'''
6 nanopb_version = "nanopb-0.3.7"
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
220 self.checks = list(checks)
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
245 if field_options.type == nanopb_pb2.FT_INLINE:
246 field_options.type = nanopb_pb2.FT_STATIC
247 self.inline = nanopb_pb2.FT_INLINE
249 # Parse field options
250 if field_options.HasField("max_size"):
251 self.max_size = field_options.max_size
253 if field_options.HasField("max_count"):
254 self.max_count = field_options.max_count
256 if desc.HasField('default_value'):
257 self.default = desc.default_value
259 # Check field rules, i.e. required/optional/repeated.
261 if desc.label == FieldD.LABEL_REPEATED:
262 self.rules = 'REPEATED'
263 if self.max_count is None:
264 can_be_static = False
266 self.array_decl = '[%d]' % self.max_count
267 elif field_options.HasField("proto3"):
268 self.rules = 'SINGULAR'
269 elif desc.label == FieldD.LABEL_REQUIRED:
270 self.rules = 'REQUIRED'
271 elif desc.label == FieldD.LABEL_OPTIONAL:
272 self.rules = 'OPTIONAL'
274 raise NotImplementedError(desc.label)
276 # Check if the field can be implemented with static allocation
277 # i.e. whether the data size is known.
278 if desc.type == FieldD.TYPE_STRING and self.max_size is None:
279 can_be_static = False
281 if desc.type == FieldD.TYPE_BYTES and self.max_size is None:
282 can_be_static = False
284 # Decide how the field data will be allocated
285 if field_options.type == nanopb_pb2.FT_DEFAULT:
287 field_options.type = nanopb_pb2.FT_STATIC
289 field_options.type = nanopb_pb2.FT_CALLBACK
291 if field_options.type == nanopb_pb2.FT_STATIC and not can_be_static:
292 raise Exception("Field %s is defined as static, but max_size or "
293 "max_count is not given." % self.name)
295 if field_options.type == nanopb_pb2.FT_STATIC:
296 self.allocation = 'STATIC'
297 elif field_options.type == nanopb_pb2.FT_POINTER:
298 self.allocation = 'POINTER'
299 elif field_options.type == nanopb_pb2.FT_CALLBACK:
300 self.allocation = 'CALLBACK'
302 raise NotImplementedError(field_options.type)
304 # Decide the C data type to use in the struct.
305 if desc.type in datatypes:
306 self.ctype, self.pbtype, self.enc_size, isa = datatypes[desc.type]
308 # Override the field size if user wants to use smaller integers
309 if isa and field_options.int_size != nanopb_pb2.IS_DEFAULT:
310 self.ctype = intsizes[field_options.int_size]
311 if desc.type == FieldD.TYPE_UINT32 or desc.type == FieldD.TYPE_UINT64:
312 self.ctype = 'u' + self.ctype;
313 elif desc.type == FieldD.TYPE_ENUM:
315 self.ctype = names_from_type_name(desc.type_name)
316 if self.default is not None:
317 self.default = self.ctype + self.default
318 self.enc_size = None # Needs to be filled in when enum values are known
319 elif desc.type == FieldD.TYPE_STRING:
320 self.pbtype = 'STRING'
322 if self.allocation == 'STATIC':
324 self.array_decl += '[%d]' % self.max_size
325 self.enc_size = varint_max_size(self.max_size) + self.max_size
326 elif desc.type == FieldD.TYPE_BYTES:
327 self.pbtype = 'BYTES'
328 if self.allocation == 'STATIC':
329 # Inline STATIC for BYTES is like STATIC for STRING.
331 self.ctype = 'pb_byte_t'
332 self.array_decl += '[%d]' % self.max_size
334 self.ctype = self.struct_name + self.name + 't'
335 self.enc_size = varint_max_size(self.max_size) + self.max_size
336 elif self.allocation == 'POINTER':
337 self.ctype = 'pb_bytes_array_t'
338 elif desc.type == FieldD.TYPE_MESSAGE:
339 self.pbtype = 'MESSAGE'
340 self.ctype = self.submsgname = names_from_type_name(desc.type_name)
341 self.enc_size = None # Needs to be filled in after the message type is available
343 raise NotImplementedError(desc.type)
345 def __lt__(self, other):
346 return self.tag < other.tag
350 if self.allocation == 'POINTER':
351 if self.rules == 'REPEATED':
352 result += ' pb_size_t ' + self.name + '_count;\n'
354 if self.pbtype == 'MESSAGE':
355 # Use struct definition, so recursive submessages are possible
356 result += ' struct _%s *%s;' % (self.ctype, self.name)
357 elif self.rules == 'REPEATED' and self.pbtype in ['STRING', 'BYTES']:
358 # String/bytes arrays need to be defined as pointers to pointers
359 result += ' %s **%s;' % (self.ctype, self.name)
361 result += ' %s *%s;' % (self.ctype, self.name)
362 elif self.allocation == 'CALLBACK':
363 result += ' pb_callback_t %s;' % self.name
365 if self.rules == 'OPTIONAL' and self.allocation == 'STATIC':
366 result += ' bool has_' + self.name + ';\n'
367 elif self.rules == 'REPEATED' and self.allocation == 'STATIC':
368 result += ' pb_size_t ' + self.name + '_count;\n'
369 result += ' %s %s%s;' % (self.ctype, self.name, self.array_decl)
373 '''Return definitions for any special types this field might need.'''
374 if self.pbtype == 'BYTES' and self.allocation == 'STATIC' and not self.inline:
375 result = 'typedef PB_BYTES_ARRAY_T(%d) %s;\n' % (self.max_size, self.ctype)
380 def get_dependencies(self):
381 '''Get list of type names used by this field.'''
382 if self.allocation == 'STATIC':
383 return [str(self.ctype)]
387 def get_initializer(self, null_init, inner_init_only = False):
388 '''Return literal expression for this field's default value.
389 null_init: If True, initialize to a 0 value instead of default from .proto
390 inner_init_only: If True, exclude initialization for any count/has fields
394 if self.pbtype == 'MESSAGE':
396 inner_init = '%s_init_zero' % self.ctype
398 inner_init = '%s_init_default' % self.ctype
399 elif self.default is None or null_init:
400 if self.pbtype == 'STRING':
402 elif self.pbtype == 'BYTES':
406 inner_init = '{0, {0}}'
407 elif self.pbtype in ('ENUM', 'UENUM'):
408 inner_init = '(%s)0' % self.ctype
412 if self.pbtype == 'STRING':
413 inner_init = self.default.replace('"', '\\"')
414 inner_init = '"' + inner_init + '"'
415 elif self.pbtype == 'BYTES':
416 data = ['0x%02x' % ord(c) for c in self.default]
421 inner_init = '{0, {0}}'
424 inner_init = '{%s}' % ','.join(data)
426 inner_init = '{%d, {%s}}' % (len(data), ','.join(data))
427 elif self.pbtype in ['FIXED32', 'UINT32']:
428 inner_init = str(self.default) + 'u'
429 elif self.pbtype in ['FIXED64', 'UINT64']:
430 inner_init = str(self.default) + 'ull'
431 elif self.pbtype in ['SFIXED64', 'INT64']:
432 inner_init = str(self.default) + 'll'
434 inner_init = str(self.default)
440 if self.allocation == 'STATIC':
441 if self.rules == 'REPEATED':
443 outer_init += ', '.join([inner_init] * self.max_count)
445 elif self.rules == 'OPTIONAL':
446 outer_init = 'false, ' + inner_init
448 outer_init = inner_init
449 elif self.allocation == 'POINTER':
450 if self.rules == 'REPEATED':
451 outer_init = '0, NULL'
454 elif self.allocation == 'CALLBACK':
455 if self.pbtype == 'EXTENSION':
458 outer_init = '{{NULL}, NULL}'
462 def default_decl(self, declaration_only = False):
463 '''Return definition for this field's default value.'''
464 if self.default is None:
468 default = self.get_initializer(False, True)
471 if self.pbtype == 'STRING':
472 if self.allocation != 'STATIC':
473 return None # Not implemented
474 array_decl = '[%d]' % self.max_size
475 elif self.pbtype == 'BYTES':
476 if self.allocation != 'STATIC':
477 return None # Not implemented
479 array_decl = '[%d]' % self.max_size
482 return 'extern const %s %s_default%s;' % (ctype, self.struct_name + self.name, array_decl)
484 return 'const %s %s_default%s = %s;' % (ctype, self.struct_name + self.name, array_decl, default)
487 '''Return the #define for the tag number of this field.'''
488 identifier = '%s_%s_tag' % (self.struct_name, self.name)
489 return '#define %-40s %d\n' % (identifier, self.tag)
491 def pb_field_t(self, prev_field_name):
492 '''Return the pb_field_t initializer to use in the constant array.
493 prev_field_name is the name of the previous field or None.
496 if self.rules == 'ONEOF':
498 result = ' PB_ANONYMOUS_ONEOF_FIELD(%s, ' % self.union_name
500 result = ' PB_ONEOF_FIELD(%s, ' % self.union_name
502 result = ' PB_FIELD('
504 result += '%3d, ' % self.tag
505 result += '%-8s, ' % self.pbtype
506 result += '%s, ' % self.rules
507 result += '%-8s, ' % (self.allocation if not self.inline else "INLINE")
508 result += '%s, ' % ("FIRST" if not prev_field_name else "OTHER")
509 result += '%s, ' % self.struct_name
510 result += '%s, ' % self.name
511 result += '%s, ' % (prev_field_name or self.name)
513 if self.pbtype == 'MESSAGE':
514 result += '&%s_fields)' % self.submsgname
515 elif self.default is None:
517 elif self.pbtype in ['BYTES', 'STRING'] and self.allocation != 'STATIC':
518 result += '0)' # Arbitrary size default values not implemented
519 elif self.rules == 'OPTEXT':
520 result += '0)' # Default value for extensions is not implemented
522 result += '&%s_default)' % (self.struct_name + self.name)
526 def get_last_field_name(self):
529 def largest_field_value(self):
530 '''Determine if this field needs 16bit or 32bit pb_field_t structure to compile properly.
531 Returns numeric value or a C-expression for assert.'''
533 if self.pbtype == 'MESSAGE' and self.allocation == 'STATIC':
534 if self.rules == 'REPEATED':
535 check.append('pb_membersize(%s, %s[0])' % (self.struct_name, self.name))
536 elif self.rules == 'ONEOF':
538 check.append('pb_membersize(%s, %s)' % (self.struct_name, self.name))
540 check.append('pb_membersize(%s, %s.%s)' % (self.struct_name, self.union_name, self.name))
542 check.append('pb_membersize(%s, %s)' % (self.struct_name, self.name))
543 elif self.pbtype == 'BYTES' and self.allocation == 'STATIC':
544 if self.max_size > 251:
545 check.append('pb_membersize(%s, %s)' % (self.struct_name, self.name))
547 return FieldMaxSize([self.tag, self.max_size, self.max_count],
549 ('%s.%s' % (self.struct_name, self.name)))
551 def encoded_size(self, dependencies):
552 '''Return the maximum size that this field can take when encoded,
553 including the field tag. If the size cannot be determined, returns
556 if self.allocation != 'STATIC':
559 if self.pbtype == 'MESSAGE':
561 if str(self.submsgname) in dependencies:
562 submsg = dependencies[str(self.submsgname)]
563 encsize = submsg.encoded_size(dependencies)
564 if encsize is not None:
565 # Include submessage length prefix
566 encsize += varint_max_size(encsize.upperlimit())
569 # Submessage or its size cannot be found.
570 # This can occur if submessage is defined in different
571 # file, and it or its .options could not be found.
572 # Instead of direct numeric value, reference the size that
573 # has been #defined in the other file.
574 encsize = EncodedSize(self.submsgname + 'size')
576 # We will have to make a conservative assumption on the length
577 # prefix size, though.
580 elif self.pbtype in ['ENUM', 'UENUM']:
581 if str(self.ctype) in dependencies:
582 enumtype = dependencies[str(self.ctype)]
583 encsize = enumtype.encoded_size()
585 # Conservative assumption
588 elif self.enc_size is None:
589 raise RuntimeError("Could not determine encoded size for %s.%s"
590 % (self.struct_name, self.name))
592 encsize = EncodedSize(self.enc_size)
594 encsize += varint_max_size(self.tag << 3) # Tag + wire type
596 if self.rules == 'REPEATED':
597 # Decoders must be always able to handle unpacked arrays.
598 # Therefore we have to reserve space for it, even though
599 # we emit packed arrays ourselves.
600 encsize *= self.max_count
605 class ExtensionRange(Field):
606 def __init__(self, struct_name, range_start, field_options):
607 '''Implements a special pb_extension_t* field in an extensible message
608 structure. The range_start signifies the index at which the extensions
609 start. Not necessarily all tags above this are extensions, it is merely
610 a speed optimization.
612 self.tag = range_start
613 self.struct_name = struct_name
614 self.name = 'extensions'
615 self.pbtype = 'EXTENSION'
616 self.rules = 'OPTIONAL'
617 self.allocation = 'CALLBACK'
618 self.ctype = 'pb_extension_t'
626 return ' pb_extension_t *extensions;'
634 def encoded_size(self, dependencies):
635 # We exclude extensions from the count, because they cannot be known
636 # until runtime. Other option would be to return None here, but this
637 # way the value remains useful if extensions are not used.
638 return EncodedSize(0)
640 class ExtensionField(Field):
641 def __init__(self, struct_name, desc, field_options):
642 self.fullname = struct_name + desc.name
643 self.extendee_name = names_from_type_name(desc.extendee)
644 Field.__init__(self, self.fullname + 'struct', desc, field_options)
646 if self.rules != 'OPTIONAL':
650 self.rules = 'OPTEXT'
653 '''Return the #define for the tag number of this field.'''
654 identifier = '%s_tag' % self.fullname
655 return '#define %-40s %d\n' % (identifier, self.tag)
657 def extension_decl(self):
658 '''Declaration of the extension type in the .pb.h file'''
660 msg = '/* Extension field %s was skipped because only "optional"\n' % self.fullname
661 msg +=' type of extension fields is currently supported. */\n'
664 return ('extern const pb_extension_type_t %s; /* field type: %s */\n' %
665 (self.fullname, str(self).strip()))
667 def extension_def(self):
668 '''Definition of the extension type in the .pb.c file'''
673 result = 'typedef struct {\n'
675 result += '\n} %s;\n\n' % self.struct_name
676 result += ('static const pb_field_t %s_field = \n %s;\n\n' %
677 (self.fullname, self.pb_field_t(None)))
678 result += 'const pb_extension_type_t %s = {\n' % self.fullname
681 result += ' &%s_field\n' % self.fullname
686 # ---------------------------------------------------------------------------
687 # Generation of oneofs (unions)
688 # ---------------------------------------------------------------------------
691 def __init__(self, struct_name, oneof_desc):
692 self.struct_name = struct_name
693 self.name = oneof_desc.name
695 self.pbtype = 'oneof'
697 self.allocation = 'ONEOF'
700 self.anonymous = False
703 def add_field(self, field):
704 if field.allocation == 'CALLBACK':
705 raise Exception("Callback fields inside of oneof are not supported"
706 + " (field %s)" % field.name)
708 field.union_name = self.name
709 field.rules = 'ONEOF'
710 field.anonymous = self.anonymous
711 self.fields.append(field)
712 self.fields.sort(key = lambda f: f.tag)
714 # Sort by the lowest tag number inside union
715 self.tag = min([f.tag for f in self.fields])
720 result += ' pb_size_t which_' + self.name + ";\n"
721 result += ' union {\n'
722 for f in self.fields:
723 result += ' ' + str(f).replace('\n', '\n ') + '\n'
727 result += ' } ' + self.name + ';'
731 return ''.join([f.types() for f in self.fields])
733 def get_dependencies(self):
735 for f in self.fields:
736 deps += f.get_dependencies()
739 def get_initializer(self, null_init):
740 return '0, {' + self.fields[0].get_initializer(null_init) + '}'
742 def default_decl(self, declaration_only = False):
746 return ''.join([f.tags() for f in self.fields])
748 def pb_field_t(self, prev_field_name):
749 result = ',\n'.join([f.pb_field_t(prev_field_name) for f in self.fields])
752 def get_last_field_name(self):
754 return self.fields[-1].name
756 return self.name + '.' + self.fields[-1].name
758 def largest_field_value(self):
759 largest = FieldMaxSize()
760 for f in self.fields:
761 largest.extend(f.largest_field_value())
764 def encoded_size(self, dependencies):
765 '''Returns the size of the largest oneof field.'''
766 largest = EncodedSize(0)
767 for f in self.fields:
768 size = EncodedSize(f.encoded_size(dependencies))
769 if size.value is None:
772 return None # Cannot resolve maximum of symbols
773 elif size.value > largest.value:
778 # ---------------------------------------------------------------------------
779 # Generation of messages (structures)
780 # ---------------------------------------------------------------------------
784 def __init__(self, names, desc, message_options):
790 if message_options.msgid:
791 self.msgid = message_options.msgid
793 if hasattr(desc, 'oneof_decl'):
794 for i, f in enumerate(desc.oneof_decl):
795 oneof_options = get_nanopb_suboptions(desc, message_options, self.name + f.name)
796 if oneof_options.no_unions:
797 no_unions.append(i) # No union, but add fields normally
798 elif oneof_options.type == nanopb_pb2.FT_IGNORE:
799 pass # No union and skip fields also
801 oneof = OneOf(self.name, f)
802 if oneof_options.anonymous_oneof:
803 oneof.anonymous = True
804 self.oneofs[i] = oneof
805 self.fields.append(oneof)
808 field_options = get_nanopb_suboptions(f, message_options, self.name + f.name)
809 if field_options.type == nanopb_pb2.FT_IGNORE:
812 field = Field(self.name, f, field_options)
813 if (hasattr(f, 'oneof_index') and
814 f.HasField('oneof_index') and
815 f.oneof_index not in no_unions):
816 if f.oneof_index in self.oneofs:
817 self.oneofs[f.oneof_index].add_field(field)
819 self.fields.append(field)
821 if len(desc.extension_range) > 0:
822 field_options = get_nanopb_suboptions(desc, message_options, self.name + 'extensions')
823 range_start = min([r.start for r in desc.extension_range])
824 if field_options.type != nanopb_pb2.FT_IGNORE:
825 self.fields.append(ExtensionRange(self.name, range_start, field_options))
827 self.packed = message_options.packed_struct
828 self.ordered_fields = self.fields[:]
829 self.ordered_fields.sort()
831 def get_dependencies(self):
832 '''Get list of type names that this structure refers to.'''
834 for f in self.fields:
835 deps += f.get_dependencies()
839 result = 'typedef struct _%s {\n' % self.name
841 if not self.ordered_fields:
842 # Empty structs are not allowed in C standard.
843 # Therefore add a dummy field if an empty message occurs.
844 result += ' char dummy_field;'
846 result += '\n'.join([str(f) for f in self.ordered_fields])
847 result += '\n/* @@protoc_insertion_point(struct:%s) */' % self.name
851 result += ' pb_packed'
853 result += ' %s;' % self.name
856 result = 'PB_PACKED_STRUCT_START\n' + result
857 result += '\nPB_PACKED_STRUCT_END'
862 return ''.join([f.types() for f in self.fields])
864 def get_initializer(self, null_init):
865 if not self.ordered_fields:
869 for field in self.ordered_fields:
870 parts.append(field.get_initializer(null_init))
871 return '{' + ', '.join(parts) + '}'
873 def default_decl(self, declaration_only = False):
875 for field in self.fields:
876 default = field.default_decl(declaration_only)
877 if default is not None:
878 result += default + '\n'
881 def count_required_fields(self):
882 '''Returns number of required fields inside this message'''
884 for f in self.fields:
885 if not isinstance(f, OneOf):
886 if f.rules == 'REQUIRED':
890 def count_all_fields(self):
892 for f in self.fields:
893 if isinstance(f, OneOf):
894 count += len(f.fields)
899 def fields_declaration(self):
900 result = 'extern const pb_field_t %s_fields[%d];' % (self.name, self.count_all_fields() + 1)
903 def fields_definition(self):
904 result = 'const pb_field_t %s_fields[%d] = {\n' % (self.name, self.count_all_fields() + 1)
907 for field in self.ordered_fields:
908 result += field.pb_field_t(prev)
910 prev = field.get_last_field_name()
912 result += ' PB_LAST_FIELD\n};'
915 def encoded_size(self, dependencies):
916 '''Return the maximum size that this message can take when encoded.
917 If the size cannot be determined, returns None.
919 size = EncodedSize(0)
920 for field in self.fields:
921 fsize = field.encoded_size(dependencies)
929 # ---------------------------------------------------------------------------
930 # Processing of entire .proto files
931 # ---------------------------------------------------------------------------
933 def iterate_messages(desc, names = Names()):
934 '''Recursively find all messages. For each, yield name, DescriptorProto.'''
935 if hasattr(desc, 'message_type'):
936 submsgs = desc.message_type
938 submsgs = desc.nested_type
940 for submsg in submsgs:
941 sub_names = names + submsg.name
942 yield sub_names, submsg
944 for x in iterate_messages(submsg, sub_names):
947 def iterate_extensions(desc, names = Names()):
948 '''Recursively find all extensions.
949 For each, yield name, FieldDescriptorProto.
951 for extension in desc.extension:
952 yield names, extension
954 for subname, subdesc in iterate_messages(desc, names):
955 for extension in subdesc.extension:
956 yield subname, extension
960 From http://code.activestate.com/recipes/577413-topological-sort/
961 This function is under the MIT license.
963 for k, v in list(data.items()):
964 v.discard(k) # Ignore self dependencies
965 extra_items_in_deps = reduce(set.union, list(data.values()), set()) - set(data.keys())
966 data.update(dict([(item, set()) for item in extra_items_in_deps]))
968 ordered = set(item for item,dep in list(data.items()) if not dep)
971 for item in sorted(ordered):
973 data = dict([(item, (dep - ordered)) for item,dep in list(data.items())
974 if item not in ordered])
975 assert not data, "A cyclic dependency exists amongst %r" % data
977 def sort_dependencies(messages):
978 '''Sort a list of Messages based on dependencies.'''
981 for message in messages:
982 dependencies[str(message.name)] = set(message.get_dependencies())
983 message_by_name[str(message.name)] = message
985 for msgname in toposort2(dependencies):
986 if msgname in message_by_name:
987 yield message_by_name[msgname]
989 def make_identifier(headername):
990 '''Make #ifndef identifier that contains uppercase A-Z and digits 0-9'''
992 for c in headername.upper():
1000 def __init__(self, fdesc, file_options):
1001 '''Takes a FileDescriptorProto and parses it.'''
1003 self.file_options = file_options
1004 self.dependencies = {}
1007 # Some of types used in this file probably come from the file itself.
1008 # Thus it has implicit dependency on itself.
1009 self.add_dependency(self)
1014 self.extensions = []
1016 if self.fdesc.package:
1017 base_name = Names(self.fdesc.package.split('.'))
1021 for enum in self.fdesc.enum_type:
1022 enum_options = get_nanopb_suboptions(enum, self.file_options, base_name + enum.name)
1023 self.enums.append(Enum(base_name, enum, enum_options))
1025 for names, message in iterate_messages(self.fdesc, base_name):
1026 message_options = get_nanopb_suboptions(message, self.file_options, names)
1028 if message_options.skip_message:
1031 self.messages.append(Message(names, message, message_options))
1032 for enum in message.enum_type:
1033 enum_options = get_nanopb_suboptions(enum, message_options, names + enum.name)
1034 self.enums.append(Enum(names, enum, enum_options))
1036 for names, extension in iterate_extensions(self.fdesc, base_name):
1037 field_options = get_nanopb_suboptions(extension, self.file_options, names + extension.name)
1038 if field_options.type != nanopb_pb2.FT_IGNORE:
1039 self.extensions.append(ExtensionField(names, extension, field_options))
1041 def add_dependency(self, other):
1042 for enum in other.enums:
1043 self.dependencies[str(enum.names)] = enum
1045 for msg in other.messages:
1046 self.dependencies[str(msg.name)] = msg
1048 # Fix field default values where enum short names are used.
1049 for enum in other.enums:
1050 if not enum.options.long_names:
1051 for message in self.messages:
1052 for field in message.fields:
1053 if field.default in enum.value_longnames:
1054 idx = enum.value_longnames.index(field.default)
1055 field.default = enum.values[idx][0]
1057 # Fix field data types where enums have negative values.
1058 for enum in other.enums:
1059 if not enum.has_negative():
1060 for message in self.messages:
1061 for field in message.fields:
1062 if field.pbtype == 'ENUM' and field.ctype == enum.names:
1063 field.pbtype = 'UENUM'
1065 def generate_header(self, includes, headername, options):
1066 '''Generate content for a header file.
1067 Generates strings, which should be concatenated and stored to file.
1070 yield '/* Automatically generated nanopb header */\n'
1071 if options.notimestamp:
1072 yield '/* Generated by %s */\n\n' % (nanopb_version)
1074 yield '/* Generated by %s at %s. */\n\n' % (nanopb_version, time.asctime())
1076 if self.fdesc.package:
1077 symbol = make_identifier(self.fdesc.package + '_' + headername)
1079 symbol = make_identifier(headername)
1080 yield '#ifndef PB_%s_INCLUDED\n' % symbol
1081 yield '#define PB_%s_INCLUDED\n' % symbol
1083 yield options.libformat % ('pb.h')
1085 # no %s specified - use whatever was passed in as options.libformat
1086 yield options.libformat
1089 for incfile in includes:
1090 noext = os.path.splitext(incfile)[0]
1091 yield options.genformat % (noext + options.extension + '.h')
1094 yield '/* @@protoc_insertion_point(includes) */\n'
1096 yield '#if PB_PROTO_HEADER_VERSION != 30\n'
1097 yield '#error Regenerate this file with the current version of nanopb generator.\n'
1101 yield '#ifdef __cplusplus\n'
1102 yield 'extern "C" {\n'
1106 yield '/* Enum definitions */\n'
1107 for enum in self.enums:
1108 yield str(enum) + '\n\n'
1111 yield '/* Struct definitions */\n'
1112 for msg in sort_dependencies(self.messages):
1114 yield str(msg) + '\n\n'
1117 yield '/* Extensions */\n'
1118 for extension in self.extensions:
1119 yield extension.extension_decl()
1123 yield '/* Default values for struct fields */\n'
1124 for msg in self.messages:
1125 yield msg.default_decl(True)
1128 yield '/* Initializer values for message structs */\n'
1129 for msg in self.messages:
1130 identifier = '%s_init_default' % msg.name
1131 yield '#define %-40s %s\n' % (identifier, msg.get_initializer(False))
1132 for msg in self.messages:
1133 identifier = '%s_init_zero' % msg.name
1134 yield '#define %-40s %s\n' % (identifier, msg.get_initializer(True))
1137 yield '/* Field tags (for use in manual encoding/decoding) */\n'
1138 for msg in sort_dependencies(self.messages):
1139 for field in msg.fields:
1141 for extension in self.extensions:
1142 yield extension.tags()
1145 yield '/* Struct field encoding specification for nanopb */\n'
1146 for msg in self.messages:
1147 yield msg.fields_declaration() + '\n'
1150 yield '/* Maximum encoded size of messages (where known) */\n'
1151 for msg in self.messages:
1152 msize = msg.encoded_size(self.dependencies)
1153 identifier = '%s_size' % msg.name
1154 if msize is not None:
1155 yield '#define %-40s %s\n' % (identifier, msize)
1157 yield '/* %s depends on runtime parameters */\n' % identifier
1160 yield '/* Message IDs (where set with "msgid" option) */\n'
1162 yield '#ifdef PB_MSGID\n'
1163 for msg in self.messages:
1164 if hasattr(msg,'msgid'):
1165 yield '#define PB_MSG_%d %s\n' % (msg.msgid, msg.name)
1168 symbol = make_identifier(headername.split('.')[0])
1169 yield '#define %s_MESSAGES \\\n' % symbol
1171 for msg in self.messages:
1173 msize = msg.encoded_size(self.dependencies)
1174 if msize is not None:
1176 if hasattr(msg,'msgid'):
1177 yield '\tPB_MSG(%d,%s,%s) \\\n' % (msg.msgid, m, msg.name)
1180 for msg in self.messages:
1181 if hasattr(msg,'msgid'):
1182 yield '#define %s_msgid %d\n' % (msg.name, msg.msgid)
1187 yield '#ifdef __cplusplus\n'
1188 yield '} /* extern "C" */\n'
1192 yield '/* @@protoc_insertion_point(eof) */\n'
1195 def generate_source(self, headername, options):
1196 '''Generate content for a source file.'''
1198 yield '/* Automatically generated nanopb constant definitions */\n'
1199 if options.notimestamp:
1200 yield '/* Generated by %s */\n\n' % (nanopb_version)
1202 yield '/* Generated by %s at %s. */\n\n' % (nanopb_version, time.asctime())
1203 yield options.genformat % (headername)
1205 yield '/* @@protoc_insertion_point(includes) */\n'
1207 yield '#if PB_PROTO_HEADER_VERSION != 30\n'
1208 yield '#error Regenerate this file with the current version of nanopb generator.\n'
1212 for msg in self.messages:
1213 yield msg.default_decl(False)
1217 for msg in self.messages:
1218 yield msg.fields_definition() + '\n\n'
1220 for ext in self.extensions:
1221 yield ext.extension_def() + '\n'
1223 # Add checks for numeric limits
1225 largest_msg = max(self.messages, key = lambda m: m.count_required_fields())
1226 largest_count = largest_msg.count_required_fields()
1227 if largest_count > 64:
1228 yield '\n/* Check that missing required fields will be properly detected */\n'
1229 yield '#if PB_MAX_REQUIRED_FIELDS < %d\n' % largest_count
1230 yield '#error Properly detecting missing required fields in %s requires \\\n' % largest_msg.name
1231 yield ' setting PB_MAX_REQUIRED_FIELDS to %d or more.\n' % largest_count
1234 max_field = FieldMaxSize()
1235 checks_msgnames = []
1236 for msg in self.messages:
1237 checks_msgnames.append(msg.name)
1238 for field in msg.fields:
1239 max_field.extend(field.largest_field_value())
1241 worst = max_field.worst
1242 worst_field = max_field.worst_field
1243 checks = max_field.checks
1245 if worst > 255 or checks:
1246 yield '\n/* Check that field information fits in pb_field_t */\n'
1248 if worst > 65535 or checks:
1249 yield '#if !defined(PB_FIELD_32BIT)\n'
1251 yield '#error Field descriptor for %s is too large. Define PB_FIELD_32BIT to fix this.\n' % worst_field
1253 assertion = ' && '.join(str(c) + ' < 65536' for c in checks)
1254 msgs = '_'.join(str(n) for n in checks_msgnames)
1255 yield '/* If you get an error here, it means that you need to define PB_FIELD_32BIT\n'
1256 yield ' * compile-time option. You can do that in pb.h or on compiler command line.\n'
1258 yield ' * The reason you need to do this is that some of your messages contain tag\n'
1259 yield ' * numbers or field sizes that are larger than what can fit in 8 or 16 bit\n'
1260 yield ' * field descriptors.\n'
1262 yield 'PB_STATIC_ASSERT((%s), YOU_MUST_DEFINE_PB_FIELD_32BIT_FOR_MESSAGES_%s)\n'%(assertion,msgs)
1266 yield '#if !defined(PB_FIELD_16BIT) && !defined(PB_FIELD_32BIT)\n'
1268 yield '#error Field descriptor for %s is too large. Define PB_FIELD_16BIT to fix this.\n' % worst_field
1270 assertion = ' && '.join(str(c) + ' < 256' for c in checks)
1271 msgs = '_'.join(str(n) for n in checks_msgnames)
1272 yield '/* If you get an error here, it means that you need to define PB_FIELD_16BIT\n'
1273 yield ' * compile-time option. You can do that in pb.h or on compiler command line.\n'
1275 yield ' * The reason you need to do this is that some of your messages contain tag\n'
1276 yield ' * numbers or field sizes that are larger than what can fit in the default\n'
1277 yield ' * 8 bit descriptors.\n'
1279 yield 'PB_STATIC_ASSERT((%s), YOU_MUST_DEFINE_PB_FIELD_16BIT_FOR_MESSAGES_%s)\n'%(assertion,msgs)
1282 # Add check for sizeof(double)
1284 for msg in self.messages:
1285 for field in msg.fields:
1286 if field.ctype == 'double':
1291 yield '/* On some platforms (such as AVR), double is really float.\n'
1292 yield ' * These are not directly supported by nanopb, but see example_avr_double.\n'
1293 yield ' * To get rid of this error, remove any double fields from your .proto.\n'
1295 yield 'PB_STATIC_ASSERT(sizeof(double) == 8, DOUBLE_MUST_BE_8_BYTES)\n'
1298 yield '/* @@protoc_insertion_point(eof) */\n'
1300 # ---------------------------------------------------------------------------
1301 # Options parsing for the .proto files
1302 # ---------------------------------------------------------------------------
1304 from fnmatch import fnmatch
1306 def read_options_file(infile):
1307 '''Parse a separate options file to list:
1308 [(namemask, options), ...]
1311 data = infile.read()
1312 data = re.sub('/\*.*?\*/', '', data, flags = re.MULTILINE)
1313 data = re.sub('//.*?$', '', data, flags = re.MULTILINE)
1314 data = re.sub('#.*?$', '', data, flags = re.MULTILINE)
1315 for i, line in enumerate(data.split('\n')):
1320 parts = line.split(None, 1)
1323 sys.stderr.write("%s:%d: " % (infile.name, i + 1) +
1324 "Option lines should have space between field name and options. " +
1325 "Skipping line: '%s'\n" % line)
1328 opts = nanopb_pb2.NanoPBOptions()
1331 text_format.Merge(parts[1], opts)
1332 except Exception as e:
1333 sys.stderr.write("%s:%d: " % (infile.name, i + 1) +
1334 "Unparseable option line: '%s'. " % line +
1335 "Error: %s\n" % str(e))
1337 results.append((parts[0], opts))
1342 '''Ugly global variables, should find a good way to pass these.'''
1343 verbose_options = False
1344 separate_options = []
1345 matched_namemasks = set()
1347 def get_nanopb_suboptions(subdesc, options, name):
1348 '''Get copy of options, and merge information from subdesc.'''
1349 new_options = nanopb_pb2.NanoPBOptions()
1350 new_options.CopyFrom(options)
1352 # Handle options defined in a separate file
1353 dotname = '.'.join(name.parts)
1354 for namemask, options in Globals.separate_options:
1355 if fnmatch(dotname, namemask):
1356 Globals.matched_namemasks.add(namemask)
1357 new_options.MergeFrom(options)
1359 if hasattr(subdesc, 'syntax') and subdesc.syntax == "proto3":
1360 new_options.proto3 = True
1362 # Handle options defined in .proto
1363 if isinstance(subdesc.options, descriptor.FieldOptions):
1364 ext_type = nanopb_pb2.nanopb
1365 elif isinstance(subdesc.options, descriptor.FileOptions):
1366 ext_type = nanopb_pb2.nanopb_fileopt
1367 elif isinstance(subdesc.options, descriptor.MessageOptions):
1368 ext_type = nanopb_pb2.nanopb_msgopt
1369 elif isinstance(subdesc.options, descriptor.EnumOptions):
1370 ext_type = nanopb_pb2.nanopb_enumopt
1372 raise Exception("Unknown options type")
1374 if subdesc.options.HasExtension(ext_type):
1375 ext = subdesc.options.Extensions[ext_type]
1376 new_options.MergeFrom(ext)
1378 if Globals.verbose_options:
1379 sys.stderr.write("Options for " + dotname + ": ")
1380 sys.stderr.write(text_format.MessageToString(new_options) + "\n")
1385 # ---------------------------------------------------------------------------
1386 # Command line interface
1387 # ---------------------------------------------------------------------------
1391 from optparse import OptionParser
1393 optparser = OptionParser(
1394 usage = "Usage: nanopb_generator.py [options] file.pb ...",
1395 epilog = "Compile file.pb from file.proto by: 'protoc -ofile.pb file.proto'. " +
1396 "Output will be written to file.pb.h and file.pb.c.")
1397 optparser.add_option("-x", dest="exclude", metavar="FILE", action="append", default=[],
1398 help="Exclude file from generated #include list.")
1399 optparser.add_option("-e", "--extension", dest="extension", metavar="EXTENSION", default=".pb",
1400 help="Set extension to use instead of '.pb' for generated files. [default: %default]")
1401 optparser.add_option("-f", "--options-file", dest="options_file", metavar="FILE", default="%s.options",
1402 help="Set name of a separate generator options file.")
1403 optparser.add_option("-I", "--options-path", dest="options_path", metavar="DIR",
1404 action="append", default = [],
1405 help="Search for .options files additionally in this path")
1406 optparser.add_option("-D", "--output-dir", dest="output_dir",
1407 metavar="OUTPUTDIR", default=None,
1408 help="Output directory of .pb.h and .pb.c files")
1409 optparser.add_option("-Q", "--generated-include-format", dest="genformat",
1410 metavar="FORMAT", default='#include "%s"\n',
1411 help="Set format string to use for including other .pb.h files. [default: %default]")
1412 optparser.add_option("-L", "--library-include-format", dest="libformat",
1413 metavar="FORMAT", default='#include <%s>\n',
1414 help="Set format string to use for including the nanopb pb.h header. [default: %default]")
1415 optparser.add_option("-T", "--no-timestamp", dest="notimestamp", action="store_true", default=False,
1416 help="Don't add timestamp to .pb.h and .pb.c preambles")
1417 optparser.add_option("-q", "--quiet", dest="quiet", action="store_true", default=False,
1418 help="Don't print anything except errors.")
1419 optparser.add_option("-v", "--verbose", dest="verbose", action="store_true", default=False,
1420 help="Print more information.")
1421 optparser.add_option("-s", dest="settings", metavar="OPTION:VALUE", action="append", default=[],
1422 help="Set generator option (max_size, max_count etc.).")
1424 def parse_file(filename, fdesc, options):
1425 '''Parse a single file. Returns a ProtoFile instance.'''
1426 toplevel_options = nanopb_pb2.NanoPBOptions()
1427 for s in options.settings:
1428 text_format.Merge(s, toplevel_options)
1431 data = open(filename, 'rb').read()
1432 fdesc = descriptor.FileDescriptorSet.FromString(data).file[0]
1434 # Check if there is a separate .options file
1437 optfilename = options.options_file % os.path.splitext(filename)[0]
1439 # No %s specified, use the filename as-is
1440 optfilename = options.options_file
1443 paths = ['.'] + options.options_path
1445 if os.path.isfile(os.path.join(p, optfilename)):
1446 optfilename = os.path.join(p, optfilename)
1448 sys.stderr.write('Reading options from ' + optfilename + '\n')
1449 Globals.separate_options = read_options_file(open(optfilename, "rU"))
1452 # If we are given a full filename and it does not exist, give an error.
1453 # However, don't give error when we automatically look for .options file
1454 # with the same name as .proto.
1455 if options.verbose or had_abspath:
1456 sys.stderr.write('Options file not found: ' + optfilename + '\n')
1457 Globals.separate_options = []
1459 Globals.matched_namemasks = set()
1462 file_options = get_nanopb_suboptions(fdesc, toplevel_options, Names([filename]))
1463 f = ProtoFile(fdesc, file_options)
1464 f.optfilename = optfilename
1468 def process_file(filename, fdesc, options, other_files = {}):
1469 '''Process a single file.
1470 filename: The full path to the .proto or .pb source file, as string.
1471 fdesc: The loaded FileDescriptorSet, or None to read from the input file.
1472 options: Command line options as they come from OptionsParser.
1475 {'headername': Name of header file,
1476 'headerdata': Data for the .h header file,
1477 'sourcename': Name of the source code file,
1478 'sourcedata': Data for the .c source code file
1481 f = parse_file(filename, fdesc, options)
1483 # Provide dependencies if available
1484 for dep in f.fdesc.dependency:
1485 if dep in other_files:
1486 f.add_dependency(other_files[dep])
1488 # Decide the file names
1489 noext = os.path.splitext(filename)[0]
1490 headername = noext + options.extension + '.h'
1491 sourcename = noext + options.extension + '.c'
1492 headerbasename = os.path.basename(headername)
1494 # List of .proto files that should not be included in the C header file
1495 # even if they are mentioned in the source .proto.
1496 excludes = ['nanopb.proto', 'google/protobuf/descriptor.proto'] + options.exclude
1497 includes = [d for d in f.fdesc.dependency if d not in excludes]
1499 headerdata = ''.join(f.generate_header(includes, headerbasename, options))
1500 sourcedata = ''.join(f.generate_source(headerbasename, options))
1502 # Check if there were any lines in .options that did not match a member
1503 unmatched = [n for n,o in Globals.separate_options if n not in Globals.matched_namemasks]
1504 if unmatched and not options.quiet:
1505 sys.stderr.write("Following patterns in " + f.optfilename + " did not match any fields: "
1506 + ', '.join(unmatched) + "\n")
1507 if not Globals.verbose_options:
1508 sys.stderr.write("Use protoc --nanopb-out=-v:. to see a list of the field names.\n")
1510 return {'headername': headername, 'headerdata': headerdata,
1511 'sourcename': sourcename, 'sourcedata': sourcedata}
1514 '''Main function when invoked directly from the command line.'''
1516 options, filenames = optparser.parse_args()
1519 optparser.print_help()
1523 options.verbose = False
1525 if options.output_dir and not os.path.exists(options.output_dir):
1526 optparser.print_help()
1527 sys.stderr.write("\noutput_dir does not exist: %s\n" % options.output_dir)
1531 Globals.verbose_options = options.verbose
1532 for filename in filenames:
1533 results = process_file(filename, None, options)
1535 base_dir = options.output_dir or ''
1537 (os.path.join(base_dir, results['headername']), results['headerdata']),
1538 (os.path.join(base_dir, results['sourcename']), results['sourcedata']),
1541 if not options.quiet:
1542 paths = " and ".join([x[0] for x in to_write])
1543 sys.stderr.write("Writing to %s\n" % paths)
1545 for path, data in to_write:
1546 with open(path, 'w') as f:
1550 '''Main function when invoked as a protoc plugin.'''
1553 if sys.platform == "win32":
1555 # Set stdin and stdout to binary mode
1556 msvcrt.setmode(sys.stdin.fileno(), os.O_BINARY)
1557 msvcrt.setmode(sys.stdout.fileno(), os.O_BINARY)
1559 data = io.open(sys.stdin.fileno(), "rb").read()
1561 request = plugin_pb2.CodeGeneratorRequest.FromString(data)
1564 # Versions of Python prior to 2.7.3 do not support unicode
1565 # input to shlex.split(). Try to convert to str if possible.
1566 params = str(request.parameter)
1567 except UnicodeEncodeError:
1568 params = request.parameter
1571 args = shlex.split(params)
1572 options, dummy = optparser.parse_args(args)
1574 Globals.verbose_options = options.verbose
1576 response = plugin_pb2.CodeGeneratorResponse()
1578 # Google's protoc does not currently indicate the full path of proto files.
1579 # Instead always add the main file path to the search dirs, that works for
1582 options.options_path.append(os.path.dirname(request.file_to_generate[0]))
1584 # Process any include files first, in order to have them
1585 # available as dependencies
1587 for fdesc in request.proto_file:
1588 other_files[fdesc.name] = parse_file(fdesc.name, fdesc, options)
1590 for filename in request.file_to_generate:
1591 for fdesc in request.proto_file:
1592 if fdesc.name == filename:
1593 results = process_file(filename, fdesc, options, other_files)
1595 f = response.file.add()
1596 f.name = results['headername']
1597 f.content = results['headerdata']
1599 f = response.file.add()
1600 f.name = results['sourcename']
1601 f.content = results['sourcedata']
1603 io.open(sys.stdout.fileno(), "wb").write(response.SerializeToString())
1605 if __name__ == '__main__':
1606 # Check if we are running as a plugin under protoc
1607 if 'protoc-gen-' in sys.argv[0] or '--protoc-plugin' in sys.argv: