631 lines
23 KiB
Python
631 lines
23 KiB
Python
'''Generate header file for nanopb from a ProtoBuf FileDescriptorSet.'''
|
|
|
|
try:
|
|
import google.protobuf.descriptor_pb2 as descriptor
|
|
except:
|
|
print
|
|
print "*************************************************************"
|
|
print "*** Could not import the Google protobuf Python libraries ***"
|
|
print "*** Try installing package 'python-protobuf' or similar. ***"
|
|
print "*************************************************************"
|
|
print
|
|
raise
|
|
|
|
try:
|
|
import nanopb_pb2
|
|
except:
|
|
print
|
|
print "***************************************************************"
|
|
print "*** Could not import the precompiled nanopb_pb2.py. ***"
|
|
print "*** Run 'make' in the 'generator' folder to update the file.***"
|
|
print "***************************************************************"
|
|
print
|
|
raise
|
|
|
|
|
|
|
|
|
|
|
|
|
|
# ---------------------------------------------------------------------------
|
|
# Generation of single fields
|
|
# ---------------------------------------------------------------------------
|
|
|
|
|
|
import os.path
|
|
|
|
# Values are tuple (c type, pb ltype)
|
|
FieldD = descriptor.FieldDescriptorProto
|
|
datatypes = {
|
|
FieldD.TYPE_BOOL: ('bool', 'PB_LTYPE_VARINT'),
|
|
FieldD.TYPE_DOUBLE: ('double', 'PB_LTYPE_FIXED64'),
|
|
FieldD.TYPE_FIXED32: ('uint32_t', 'PB_LTYPE_FIXED32'),
|
|
FieldD.TYPE_FIXED64: ('uint64_t', 'PB_LTYPE_FIXED64'),
|
|
FieldD.TYPE_FLOAT: ('float', 'PB_LTYPE_FIXED32'),
|
|
FieldD.TYPE_INT32: ('int32_t', 'PB_LTYPE_VARINT'),
|
|
FieldD.TYPE_INT64: ('int64_t', 'PB_LTYPE_VARINT'),
|
|
FieldD.TYPE_SFIXED32: ('int32_t', 'PB_LTYPE_FIXED32'),
|
|
FieldD.TYPE_SFIXED64: ('int64_t', 'PB_LTYPE_FIXED64'),
|
|
FieldD.TYPE_SINT32: ('int32_t', 'PB_LTYPE_SVARINT'),
|
|
FieldD.TYPE_SINT64: ('int64_t', 'PB_LTYPE_SVARINT'),
|
|
FieldD.TYPE_UINT32: ('uint32_t', 'PB_LTYPE_VARINT'),
|
|
FieldD.TYPE_UINT64: ('uint64_t', 'PB_LTYPE_VARINT')
|
|
}
|
|
|
|
class Names:
|
|
'''Keeps a set of nested names and formats them to C identifier.
|
|
You can subclass this with your own implementation.
|
|
'''
|
|
def __init__(self, parts = ()):
|
|
if isinstance(parts, Names):
|
|
parts = parts.parts
|
|
self.parts = tuple(parts)
|
|
|
|
def __str__(self):
|
|
return '_'.join(self.parts)
|
|
|
|
def __add__(self, other):
|
|
if isinstance(other, (str, unicode)):
|
|
return Names(self.parts + (other,))
|
|
elif isinstance(other, tuple):
|
|
return Names(self.parts + other)
|
|
else:
|
|
raise ValueError("Name parts should be of type str")
|
|
|
|
def names_from_type_name(type_name):
|
|
'''Parse Names() from FieldDescriptorProto type_name'''
|
|
if type_name[0] != '.':
|
|
raise NotImplementedError("Lookup of non-absolute type names is not supported")
|
|
return Names(type_name[1:].split('.'))
|
|
|
|
class Enum:
|
|
def __init__(self, names, desc, enum_options):
|
|
'''desc is EnumDescriptorProto'''
|
|
|
|
if enum_options.long_names:
|
|
self.names = names + desc.name
|
|
else:
|
|
self.names = names
|
|
|
|
self.values = [(self.names + x.name, x.number) for x in desc.value]
|
|
|
|
def __str__(self):
|
|
result = 'typedef enum _%s {\n' % self.names
|
|
result += ',\n'.join([" %s = %d" % x for x in self.values])
|
|
result += '\n} %s;' % self.names
|
|
return result
|
|
|
|
class Field:
|
|
def __init__(self, struct_name, desc, field_options):
|
|
'''desc is FieldDescriptorProto'''
|
|
self.tag = desc.number
|
|
self.struct_name = struct_name
|
|
self.name = desc.name
|
|
self.default = None
|
|
self.max_size = None
|
|
self.max_count = None
|
|
self.array_decl = ""
|
|
|
|
# Parse field options
|
|
if field_options.HasField("max_size"):
|
|
self.max_size = field_options.max_size
|
|
|
|
if field_options.HasField("max_count"):
|
|
self.max_count = field_options.max_count
|
|
|
|
if desc.HasField('default_value'):
|
|
self.default = desc.default_value
|
|
|
|
# Decide HTYPE
|
|
# HTYPE is the high-order nibble of nanopb field description,
|
|
# defining whether value is required/optional/repeated.
|
|
can_be_static = True
|
|
if desc.label == FieldD.LABEL_REQUIRED:
|
|
self.htype = 'PB_HTYPE_REQUIRED'
|
|
elif desc.label == FieldD.LABEL_OPTIONAL:
|
|
self.htype = 'PB_HTYPE_OPTIONAL'
|
|
elif desc.label == FieldD.LABEL_REPEATED:
|
|
if self.max_count is None:
|
|
can_be_static = False
|
|
else:
|
|
self.htype = 'PB_HTYPE_ARRAY'
|
|
self.array_decl = '[%d]' % self.max_count
|
|
else:
|
|
raise NotImplementedError(desc.label)
|
|
|
|
# Decide LTYPE and CTYPE
|
|
# LTYPE is the low-order nibble of nanopb field description,
|
|
# defining how to decode an individual value.
|
|
# CTYPE is the name of the c type to use in the struct.
|
|
if datatypes.has_key(desc.type):
|
|
self.ctype, self.ltype = datatypes[desc.type]
|
|
elif desc.type == FieldD.TYPE_ENUM:
|
|
self.ltype = 'PB_LTYPE_VARINT'
|
|
self.ctype = names_from_type_name(desc.type_name)
|
|
if self.default is not None:
|
|
self.default = self.ctype + self.default
|
|
elif desc.type == FieldD.TYPE_STRING:
|
|
self.ltype = 'PB_LTYPE_STRING'
|
|
if self.max_size is None:
|
|
can_be_static = False
|
|
else:
|
|
self.ctype = 'char'
|
|
self.array_decl += '[%d]' % self.max_size
|
|
elif desc.type == FieldD.TYPE_BYTES:
|
|
self.ltype = 'PB_LTYPE_BYTES'
|
|
if self.max_size is None:
|
|
can_be_static = False
|
|
else:
|
|
self.ctype = self.struct_name + self.name + 't'
|
|
elif desc.type == FieldD.TYPE_MESSAGE:
|
|
self.ltype = 'PB_LTYPE_SUBMESSAGE'
|
|
self.ctype = self.submsgname = names_from_type_name(desc.type_name)
|
|
else:
|
|
raise NotImplementedError(desc.type)
|
|
|
|
if field_options.type == nanopb_pb2.FT_DEFAULT:
|
|
if can_be_static:
|
|
field_options.type = nanopb_pb2.FT_STATIC
|
|
else:
|
|
field_options.type = nanopb_pb2.FT_CALLBACK
|
|
|
|
if field_options.type == nanopb_pb2.FT_STATIC and not can_be_static:
|
|
raise Exception("Field %s is defined as static, but max_size or max_count is not given." % self.name)
|
|
|
|
if field_options.type == nanopb_pb2.FT_CALLBACK:
|
|
self.htype = 'PB_HTYPE_CALLBACK'
|
|
self.ctype = 'pb_callback_t'
|
|
self.array_decl = ''
|
|
|
|
def __cmp__(self, other):
|
|
return cmp(self.tag, other.tag)
|
|
|
|
def __str__(self):
|
|
if self.htype == 'PB_HTYPE_OPTIONAL':
|
|
result = ' bool has_' + self.name + ';\n'
|
|
elif self.htype == 'PB_HTYPE_ARRAY':
|
|
result = ' size_t ' + self.name + '_count;\n'
|
|
else:
|
|
result = ''
|
|
result += ' %s %s%s;' % (self.ctype, self.name, self.array_decl)
|
|
return result
|
|
|
|
def types(self):
|
|
'''Return definitions for any special types this field might need.'''
|
|
if self.ltype == 'PB_LTYPE_BYTES' and self.max_size is not None:
|
|
result = 'typedef struct {\n'
|
|
result += ' size_t size;\n'
|
|
result += ' uint8_t bytes[%d];\n' % self.max_size
|
|
result += '} %s;\n' % self.ctype
|
|
else:
|
|
result = None
|
|
return result
|
|
|
|
def default_decl(self, declaration_only = False):
|
|
'''Return definition for this field's default value.'''
|
|
if self.default is None:
|
|
return None
|
|
|
|
if self.ltype == 'PB_LTYPE_STRING':
|
|
ctype = 'char'
|
|
if self.max_size is None:
|
|
return None # Not implemented
|
|
else:
|
|
array_decl = '[%d]' % (self.max_size + 1)
|
|
default = str(self.default).encode('string_escape')
|
|
default = default.replace('"', '\\"')
|
|
default = '"' + default + '"'
|
|
elif self.ltype == 'PB_LTYPE_BYTES':
|
|
data = self.default.decode('string_escape')
|
|
data = ['0x%02x' % ord(c) for c in data]
|
|
|
|
if self.max_size is None:
|
|
return None # Not implemented
|
|
else:
|
|
ctype = self.ctype
|
|
|
|
default = '{%d, {%s}}' % (len(data), ','.join(data))
|
|
array_decl = ''
|
|
else:
|
|
ctype, default = self.ctype, self.default
|
|
array_decl = ''
|
|
|
|
if declaration_only:
|
|
return 'extern const %s %s_default%s;' % (ctype, self.struct_name + self.name, array_decl)
|
|
else:
|
|
return 'const %s %s_default%s = %s;' % (ctype, self.struct_name + self.name, array_decl, default)
|
|
|
|
def pb_field_t(self, prev_field_name):
|
|
'''Return the pb_field_t initializer to use in the constant array.
|
|
prev_field_name is the name of the previous field or None.
|
|
'''
|
|
result = ' {%d, ' % self.tag
|
|
result += '(pb_type_t) ((int) ' + self.htype
|
|
if self.ltype is not None:
|
|
result += ' | (int) ' + self.ltype
|
|
result += '),\n'
|
|
|
|
if prev_field_name is None:
|
|
result += ' offsetof(%s, %s),' % (self.struct_name, self.name)
|
|
else:
|
|
result += ' pb_delta_end(%s, %s, %s),' % (self.struct_name, self.name, prev_field_name)
|
|
|
|
if self.htype == 'PB_HTYPE_OPTIONAL':
|
|
result += '\n pb_delta(%s, has_%s, %s),' % (self.struct_name, self.name, self.name)
|
|
elif self.htype == 'PB_HTYPE_ARRAY':
|
|
result += '\n pb_delta(%s, %s_count, %s),' % (self.struct_name, self.name, self.name)
|
|
else:
|
|
result += ' 0,'
|
|
|
|
|
|
if self.htype == 'PB_HTYPE_ARRAY':
|
|
result += '\n pb_membersize(%s, %s[0]),' % (self.struct_name, self.name)
|
|
result += ('\n pb_membersize(%s, %s) / pb_membersize(%s, %s[0]),'
|
|
% (self.struct_name, self.name, self.struct_name, self.name))
|
|
else:
|
|
result += '\n pb_membersize(%s, %s),' % (self.struct_name, self.name)
|
|
result += ' 0,'
|
|
|
|
if self.ltype == 'PB_LTYPE_SUBMESSAGE':
|
|
result += '\n &%s_fields}' % self.submsgname
|
|
elif self.default is None or self.htype == 'PB_HTYPE_CALLBACK':
|
|
result += ' 0}'
|
|
else:
|
|
result += '\n &%s_default}' % (self.struct_name + self.name)
|
|
|
|
return result
|
|
|
|
def largest_field_value(self):
|
|
'''Determine if this field needs 16bit or 32bit pb_field_t structure to compile properly.
|
|
Returns numeric value or a C-expression for assert.'''
|
|
if self.ltype == 'PB_LTYPE_SUBMESSAGE':
|
|
if self.htype == 'PB_HTYPE_ARRAY':
|
|
return 'pb_membersize(%s, %s[0])' % (self.struct_name, self.name)
|
|
else:
|
|
return 'pb_membersize(%s, %s)' % (self.struct_name, self.name)
|
|
|
|
return max(self.tag, self.max_size, self.max_count)
|
|
|
|
|
|
|
|
|
|
|
|
|
|
# ---------------------------------------------------------------------------
|
|
# Generation of messages (structures)
|
|
# ---------------------------------------------------------------------------
|
|
|
|
|
|
class Message:
|
|
def __init__(self, names, desc, message_options):
|
|
self.name = names
|
|
self.fields = [Field(self.name, f, get_nanopb_suboptions(f, message_options)) for f in desc.field]
|
|
self.ordered_fields = self.fields[:]
|
|
self.ordered_fields.sort()
|
|
|
|
def get_dependencies(self):
|
|
'''Get list of type names that this structure refers to.'''
|
|
return [str(field.ctype) for field in self.fields]
|
|
|
|
def __str__(self):
|
|
result = 'typedef struct _%s {\n' % self.name
|
|
result += '\n'.join([str(f) for f in self.ordered_fields])
|
|
result += '\n} %s;' % self.name
|
|
return result
|
|
|
|
def types(self):
|
|
result = ""
|
|
for field in self.fields:
|
|
types = field.types()
|
|
if types is not None:
|
|
result += types + '\n'
|
|
return result
|
|
|
|
def default_decl(self, declaration_only = False):
|
|
result = ""
|
|
for field in self.fields:
|
|
default = field.default_decl(declaration_only)
|
|
if default is not None:
|
|
result += default + '\n'
|
|
return result
|
|
|
|
def fields_declaration(self):
|
|
result = 'extern const pb_field_t %s_fields[%d];' % (self.name, len(self.fields) + 1)
|
|
return result
|
|
|
|
def fields_definition(self):
|
|
result = 'const pb_field_t %s_fields[%d] = {\n' % (self.name, len(self.fields) + 1)
|
|
|
|
prev = None
|
|
for field in self.ordered_fields:
|
|
result += field.pb_field_t(prev)
|
|
result += ',\n\n'
|
|
prev = field.name
|
|
|
|
result += ' PB_LAST_FIELD\n};'
|
|
return result
|
|
|
|
|
|
|
|
|
|
|
|
|
|
# ---------------------------------------------------------------------------
|
|
# Processing of entire .proto files
|
|
# ---------------------------------------------------------------------------
|
|
|
|
|
|
def iterate_messages(desc, names = Names()):
|
|
'''Recursively find all messages. For each, yield name, DescriptorProto.'''
|
|
if hasattr(desc, 'message_type'):
|
|
submsgs = desc.message_type
|
|
else:
|
|
submsgs = desc.nested_type
|
|
|
|
for submsg in submsgs:
|
|
sub_names = names + submsg.name
|
|
yield sub_names, submsg
|
|
|
|
for x in iterate_messages(submsg, sub_names):
|
|
yield x
|
|
|
|
def parse_file(fdesc, file_options):
|
|
'''Takes a FileDescriptorProto and returns tuple (enum, messages).'''
|
|
|
|
enums = []
|
|
messages = []
|
|
|
|
if fdesc.package:
|
|
base_name = Names(fdesc.package.split('.'))
|
|
else:
|
|
base_name = Names()
|
|
|
|
for enum in fdesc.enum_type:
|
|
enum_options = get_nanopb_suboptions(enum, file_options)
|
|
enums.append(Enum(base_name, enum, enum_options))
|
|
|
|
for names, message in iterate_messages(fdesc, base_name):
|
|
message_options = get_nanopb_suboptions(message, file_options)
|
|
messages.append(Message(names, message, message_options))
|
|
for enum in message.enum_type:
|
|
enums.append(Enum(names, enum, message_options))
|
|
|
|
return enums, messages
|
|
|
|
def toposort2(data):
|
|
'''Topological sort.
|
|
From http://code.activestate.com/recipes/577413-topological-sort/
|
|
This function is under the MIT license.
|
|
'''
|
|
for k, v in data.items():
|
|
v.discard(k) # Ignore self dependencies
|
|
extra_items_in_deps = reduce(set.union, data.values(), set()) - set(data.keys())
|
|
data.update(dict([(item, set()) for item in extra_items_in_deps]))
|
|
while True:
|
|
ordered = set(item for item,dep in data.items() if not dep)
|
|
if not ordered:
|
|
break
|
|
for item in sorted(ordered):
|
|
yield item
|
|
data = dict([(item, (dep - ordered)) for item,dep in data.items()
|
|
if item not in ordered])
|
|
assert not data, "A cyclic dependency exists amongst %r" % data
|
|
|
|
def sort_dependencies(messages):
|
|
'''Sort a list of Messages based on dependencies.'''
|
|
dependencies = {}
|
|
message_by_name = {}
|
|
for message in messages:
|
|
dependencies[str(message.name)] = set(message.get_dependencies())
|
|
message_by_name[str(message.name)] = message
|
|
|
|
for msgname in toposort2(dependencies):
|
|
if msgname in message_by_name:
|
|
yield message_by_name[msgname]
|
|
|
|
def generate_header(dependencies, headername, enums, messages):
|
|
'''Generate content for a header file.
|
|
Generates strings, which should be concatenated and stored to file.
|
|
'''
|
|
|
|
yield '/* Automatically generated nanopb header */\n'
|
|
|
|
symbol = headername.replace('.', '_').upper()
|
|
yield '#ifndef _PB_%s_\n' % symbol
|
|
yield '#define _PB_%s_\n' % symbol
|
|
yield '#include <pb.h>\n\n'
|
|
|
|
for dependency in dependencies:
|
|
noext = os.path.splitext(dependency)[0]
|
|
yield '#include "%s.pb.h"\n' % noext
|
|
|
|
yield '#ifdef __cplusplus\n'
|
|
yield 'extern "C" {\n'
|
|
yield '#endif\n\n'
|
|
|
|
yield '/* Enum definitions */\n'
|
|
for enum in enums:
|
|
yield str(enum) + '\n\n'
|
|
|
|
yield '/* Struct definitions */\n'
|
|
for msg in sort_dependencies(messages):
|
|
yield msg.types()
|
|
yield str(msg) + '\n\n'
|
|
|
|
yield '/* Default values for struct fields */\n'
|
|
for msg in messages:
|
|
yield msg.default_decl(True)
|
|
yield '\n'
|
|
|
|
yield '/* Struct field encoding specification for nanopb */\n'
|
|
for msg in messages:
|
|
yield msg.fields_declaration() + '\n'
|
|
|
|
if messages:
|
|
count_required_fields = lambda m: len([f for f in msg.fields if f.htype == 'PB_HTYPE_REQUIRED'])
|
|
largest_msg = max(messages, key = count_required_fields)
|
|
largest_count = count_required_fields(largest_msg)
|
|
if largest_count > 64:
|
|
yield '\n/* Check that missing required fields will be properly detected */\n'
|
|
yield '#if PB_MAX_REQUIRED_FIELDS < %d\n' % largest_count
|
|
yield '#error Properly detecting missing required fields in %s requires \\\n' % largest_msg.name
|
|
yield ' setting PB_MAX_REQUIRED_FIELDS to %d or more.\n' % largest_count
|
|
yield '#endif\n'
|
|
|
|
worst = 0
|
|
worst_field = ''
|
|
checks = []
|
|
for msg in messages:
|
|
for field in msg.fields:
|
|
status = field.largest_field_value()
|
|
if isinstance(status, (str, unicode)):
|
|
checks.append(status)
|
|
elif status > worst:
|
|
worst = status
|
|
worst_field = str(field.struct_name) + '.' + str(field.name)
|
|
|
|
if worst > 255 or checks:
|
|
yield '\n/* Check that field information fits in pb_field_t */\n'
|
|
|
|
if worst < 65536:
|
|
yield '#if !defined(PB_FIELD_16BIT) && !defined(PB_FIELD_32BIT)\n'
|
|
if worst > 255:
|
|
yield '#error Field descriptor for %s is too large. Define PB_FIELD_16BIT to fix this.\n' % worst_field
|
|
else:
|
|
assertion = ' && '.join(str(c) + ' < 256' for c in checks)
|
|
yield 'STATIC_ASSERT((%s), YOU_MUST_DEFINE_PB_FIELD_16BIT)\n' % assertion
|
|
yield '#endif\n\n'
|
|
|
|
if worst > 65535 or checks:
|
|
yield '#if !defined(PB_FIELD_32BIT)\n'
|
|
if worst > 65535:
|
|
yield '#error Field descriptor for %s is too large. Define PB_FIELD_32BIT to fix this.\n' % worst_field
|
|
else:
|
|
assertion = ' && '.join(str(c) + ' < 65536' for c in checks)
|
|
yield 'STATIC_ASSERT((%s), YOU_MUST_DEFINE_PB_FIELD_32BIT)\n' % assertion
|
|
yield '#endif\n'
|
|
|
|
yield '\n#ifdef __cplusplus\n'
|
|
yield '} /* extern "C" */\n'
|
|
yield '#endif\n'
|
|
|
|
# End of header
|
|
yield '\n#endif\n'
|
|
|
|
def generate_source(headername, enums, messages):
|
|
'''Generate content for a source file.'''
|
|
|
|
yield '/* Automatically generated nanopb constant definitions */\n'
|
|
yield '#include "%s"\n\n' % headername
|
|
|
|
for msg in messages:
|
|
yield msg.default_decl(False)
|
|
|
|
yield '\n\n'
|
|
|
|
for msg in messages:
|
|
yield msg.fields_definition() + '\n\n'
|
|
|
|
|
|
|
|
# ---------------------------------------------------------------------------
|
|
# Command line interface
|
|
# ---------------------------------------------------------------------------
|
|
|
|
import sys
|
|
import os.path
|
|
from optparse import OptionParser
|
|
import google.protobuf.text_format as text_format
|
|
|
|
optparser = OptionParser(
|
|
usage = "Usage: nanopb_generator.py [options] file.pb ...",
|
|
epilog = "Compile file.pb from file.proto by: 'protoc -ofile.pb file.proto'. " +
|
|
"Output will be written to file.pb.h and file.pb.c.")
|
|
optparser.add_option("-x", dest="exclude", metavar="FILE", action="append", default=[],
|
|
help="Exclude file from generated #include list.")
|
|
optparser.add_option("-q", "--quiet", dest="quiet", action="store_true", default=False,
|
|
help="Don't print anything except errors.")
|
|
optparser.add_option("-v", "--verbose", dest="verbose", action="store_true", default=False,
|
|
help="Print more information.")
|
|
optparser.add_option("-s", dest="settings", metavar="OPTION:VALUE", action="append", default=[],
|
|
help="Set generator option (max_size, max_count etc.).")
|
|
|
|
def get_nanopb_suboptions(subdesc, options):
|
|
'''Get copy of options, and merge information from subdesc.'''
|
|
new_options = nanopb_pb2.NanoPBOptions()
|
|
new_options.CopyFrom(options)
|
|
|
|
if isinstance(subdesc.options, descriptor.FieldOptions):
|
|
ext_type = nanopb_pb2.nanopb
|
|
elif isinstance(subdesc.options, descriptor.FileOptions):
|
|
ext_type = nanopb_pb2.nanopb_fileopt
|
|
elif isinstance(subdesc.options, descriptor.MessageOptions):
|
|
ext_type = nanopb_pb2.nanopb_msgopt
|
|
elif isinstance(subdesc.options, descriptor.EnumOptions):
|
|
ext_type = nanopb_pb2.nanopb_enumopt
|
|
else:
|
|
raise Exception("Unknown options type")
|
|
|
|
if subdesc.options.HasExtension(ext_type):
|
|
ext = subdesc.options.Extensions[ext_type]
|
|
new_options.MergeFrom(ext)
|
|
|
|
return new_options
|
|
|
|
def process(filenames, options):
|
|
'''Process the files given on the command line.'''
|
|
|
|
if not filenames:
|
|
optparser.print_help()
|
|
return False
|
|
|
|
if options.quiet:
|
|
options.verbose = False
|
|
|
|
toplevel_options = nanopb_pb2.NanoPBOptions()
|
|
for s in options.settings:
|
|
text_format.Merge(s, toplevel_options)
|
|
|
|
for filename in filenames:
|
|
data = open(filename, 'rb').read()
|
|
fdesc = descriptor.FileDescriptorSet.FromString(data)
|
|
|
|
file_options = get_nanopb_suboptions(fdesc.file[0], toplevel_options)
|
|
|
|
if options.verbose:
|
|
print "Options for " + filename + ":"
|
|
print text_format.MessageToString(file_options)
|
|
|
|
enums, messages = parse_file(fdesc.file[0], file_options)
|
|
|
|
noext = os.path.splitext(filename)[0]
|
|
headername = noext + '.pb.h'
|
|
sourcename = noext + '.pb.c'
|
|
headerbasename = os.path.basename(headername)
|
|
|
|
if not options.quiet:
|
|
print "Writing to " + headername + " and " + sourcename
|
|
|
|
# List of .proto files that should not be included in the C header file
|
|
# even if they are mentioned in the source .proto.
|
|
excludes = ['nanopb.proto', 'google/protobuf/descriptor.proto'] + options.exclude
|
|
dependencies = [d for d in fdesc.file[0].dependency if d not in excludes]
|
|
|
|
header = open(headername, 'w')
|
|
for part in generate_header(dependencies, headerbasename, enums, messages):
|
|
header.write(part)
|
|
|
|
source = open(sourcename, 'w')
|
|
for part in generate_source(headerbasename, enums, messages):
|
|
source.write(part)
|
|
|
|
return True
|
|
|
|
if __name__ == '__main__':
|
|
options, filenames = optparser.parse_args()
|
|
status = process(filenames, options)
|
|
|
|
if not status:
|
|
sys.exit(1)
|
|
|