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def _lower_underscore_to_upper_camel(str):
humps = []
for hump in str.split('_'):
humps += [hump[0].upper() + hump[1:]]
return "".join(humps)
def _file_to_upper_camel(src):
elements = src.rpartition('/')
upper_camel = _lower_underscore_to_upper_camel(elements[-1])
return "".join(elements[:-1] + [upper_camel])
def _file_with_extension(src, ext):
elements = src.rpartition('/')
basename = elements[-1].partition('.')[0]
return "".join(elements[:-1] + [basename, ext])
def _protoc_invocation(srcs, flags):
protoc_command = "$(location //external:protoc) -I . "
srcs_params = ""
for src in srcs:
srcs_params += " $(location %s)" % (src)
return protoc_command + flags + srcs_params
def objc_proto_library(name, srcs, visibility=None):
h_files = []
m_files = []
for src in srcs:
src = _file_to_upper_camel(src)
h_files += [_file_with_extension(src, ".pbobjc.h")]
m_files += [_file_with_extension(src, ".pbobjc.m")]
protoc_flags = "--objc_out=$(GENDIR)"
native.genrule(
name = name + "_codegen",
srcs = srcs + ["//external:protoc"],
outs = h_files + m_files,
cmd = _protoc_invocation(srcs, protoc_flags),
)
native.objc_library(
name = name,
hdrs = h_files,
includes = ["."],
non_arc_srcs = m_files,
deps = ["//external:protobuf_objc"],
visibility = visibility,
)
def objc_grpc_library(name, services, other_messages, visibility=None):
objc_proto_library(name + "_messages", services + other_messages)
h_files = []
m_files = []
for src in services:
src = _file_to_upper_camel(src)
h_files += [_file_with_extension(src, ".pbrpc.h")]
m_files += [_file_with_extension(src, ".pbrpc.m")]
protoc_flags = "--grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(location //external:grpc_protoc_plugin_objc)"
native.genrule(
name = name + "_codegen",
srcs = services + [
"//external:grpc_protoc_plugin_objc",
"//external:protoc",
],
outs = h_files + m_files,
cmd = _protoc_invocation(services, protoc_flags),
)
native.objc_library(
name = name,
hdrs = h_files,
includes = ["."],
srcs = m_files,
deps = [
":" + name + "_messages",
"//external:proto_objc_rpc",
],
visibility = visibility,
)
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