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Diffstat (limited to 'src/google/protobuf/util/internal/utility.cc')
| -rw-r--r-- | src/google/protobuf/util/internal/utility.cc | 365 |
1 files changed, 365 insertions, 0 deletions
diff --git a/src/google/protobuf/util/internal/utility.cc b/src/google/protobuf/util/internal/utility.cc new file mode 100644 index 00000000..5f613e77 --- /dev/null +++ b/src/google/protobuf/util/internal/utility.cc @@ -0,0 +1,365 @@ +// Protocol Buffers - Google's data interchange format +// Copyright 2008 Google Inc. All rights reserved. +// https://developers.google.com/protocol-buffers/ +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are +// met: +// +// * Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above +// copyright notice, this list of conditions and the following disclaimer +// in the documentation and/or other materials provided with the +// distribution. +// * Neither the name of Google Inc. nor the names of its +// contributors may be used to endorse or promote products derived from +// this software without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +#include <google/protobuf/util/internal/utility.h> + +#include <google/protobuf/stubs/callback.h> +#include <google/protobuf/stubs/common.h> +#include <google/protobuf/stubs/logging.h> +#include <google/protobuf/wrappers.pb.h> +#include <google/protobuf/descriptor.pb.h> +#include <google/protobuf/descriptor.h> +#include <google/protobuf/util/internal/constants.h> +#include <google/protobuf/stubs/strutil.h> +#include <google/protobuf/stubs/map_util.h> +#include <google/protobuf/stubs/mathlimits.h> + +namespace google { +namespace protobuf { +namespace util { +namespace converter { + +namespace { +const StringPiece SkipWhiteSpace(StringPiece str) { + StringPiece::size_type i; + for (i = 0; i < str.size() && isspace(str[i]); ++i) { + } + GOOGLE_DCHECK(i == str.size() || !isspace(str[i])); + return str.substr(i); +} +} // namespace + +bool GetBoolOptionOrDefault( + const google::protobuf::RepeatedPtrField<google::protobuf::Option>& options, + const string& option_name, bool default_value) { + const google::protobuf::Option* opt = FindOptionOrNull(options, option_name); + if (opt == NULL) { + return default_value; + } + return GetBoolFromAny(opt->value()); +} + +int64 GetInt64OptionOrDefault( + const google::protobuf::RepeatedPtrField<google::protobuf::Option>& options, + const string& option_name, int64 default_value) { + const google::protobuf::Option* opt = FindOptionOrNull(options, option_name); + if (opt == NULL) { + return default_value; + } + return GetInt64FromAny(opt->value()); +} + +double GetDoubleOptionOrDefault( + const google::protobuf::RepeatedPtrField<google::protobuf::Option>& options, + const string& option_name, double default_value) { + const google::protobuf::Option* opt = FindOptionOrNull(options, option_name); + if (opt == NULL) { + return default_value; + } + return GetDoubleFromAny(opt->value()); +} + +string GetStringOptionOrDefault( + const google::protobuf::RepeatedPtrField<google::protobuf::Option>& options, + const string& option_name, const string& default_value) { + const google::protobuf::Option* opt = FindOptionOrNull(options, option_name); + if (opt == NULL) { + return default_value; + } + return GetStringFromAny(opt->value()); +} + +template <typename T> +void ParseFromAny(const string& data, T* result) { + result->ParseFromString(data); +} + +// Returns a boolean value contained in Any type. +// TODO(skarvaje): Add type checking & error messages here. +bool GetBoolFromAny(const google::protobuf::Any& any) { + google::protobuf::BoolValue b; + ParseFromAny(any.value(), &b); + return b.value(); +} + +int64 GetInt64FromAny(const google::protobuf::Any& any) { + google::protobuf::Int64Value i; + ParseFromAny(any.value(), &i); + return i.value(); +} + +double GetDoubleFromAny(const google::protobuf::Any& any) { + google::protobuf::DoubleValue i; + ParseFromAny(any.value(), &i); + return i.value(); +} + +string GetStringFromAny(const google::protobuf::Any& any) { + google::protobuf::StringValue s; + ParseFromAny(any.value(), &s); + return s.value(); +} + +const StringPiece GetTypeWithoutUrl(StringPiece type_url) { + if (type_url.size() > kTypeUrlSize && type_url[kTypeUrlSize] == '/') { + return type_url.substr(kTypeUrlSize + 1); + } else { + size_t idx = type_url.rfind('/'); + return type_url.substr(idx + 1); + } +} + +const string GetFullTypeWithUrl(StringPiece simple_type) { + return StrCat(kTypeServiceBaseUrl, "/", simple_type); +} + +const google::protobuf::Option* FindOptionOrNull( + const google::protobuf::RepeatedPtrField<google::protobuf::Option>& options, + const string& option_name) { + for (int i = 0; i < options.size(); ++i) { + const google::protobuf::Option& opt = options.Get(i); + if (opt.name() == option_name) { + return &opt; + } + } + return NULL; +} + +const google::protobuf::Field* FindFieldInTypeOrNull( + const google::protobuf::Type* type, StringPiece field_name) { + if (type != NULL) { + for (int i = 0; i < type->fields_size(); ++i) { + const google::protobuf::Field& field = type->fields(i); + if (field.name() == field_name) { + return &field; + } + } + } + return NULL; +} + +const google::protobuf::Field* FindJsonFieldInTypeOrNull( + const google::protobuf::Type* type, StringPiece json_name) { + if (type != NULL) { + for (int i = 0; i < type->fields_size(); ++i) { + const google::protobuf::Field& field = type->fields(i); + if (field.json_name() == json_name) { + return &field; + } + } + } + return NULL; +} + +const google::protobuf::EnumValue* FindEnumValueByNameOrNull( + const google::protobuf::Enum* enum_type, StringPiece enum_name) { + if (enum_type != NULL) { + for (int i = 0; i < enum_type->enumvalue_size(); ++i) { + const google::protobuf::EnumValue& enum_value = enum_type->enumvalue(i); + if (enum_value.name() == enum_name) { + return &enum_value; + } + } + } + return NULL; +} + +const google::protobuf::EnumValue* FindEnumValueByNumberOrNull( + const google::protobuf::Enum* enum_type, int32 value) { + if (enum_type != NULL) { + for (int i = 0; i < enum_type->enumvalue_size(); ++i) { + const google::protobuf::EnumValue& enum_value = enum_type->enumvalue(i); + if (enum_value.number() == value) { + return &enum_value; + } + } + } + return NULL; +} + +string ToCamelCase(const StringPiece input) { + bool capitalize_next = false; + bool was_cap = true; + bool is_cap = false; + bool first_word = true; + string result; + result.reserve(input.size()); + + for (size_t i = 0; i < input.size(); ++i, was_cap = is_cap) { + is_cap = ascii_isupper(input[i]); + if (input[i] == '_') { + capitalize_next = true; + if (!result.empty()) first_word = false; + continue; + } else if (first_word) { + // Consider when the current character B is capitalized, + // first word ends when: + // 1) following a lowercase: "...aB..." + // 2) followed by a lowercase: "...ABc..." + if (!result.empty() && is_cap && + (!was_cap || (i + 1 < input.size() && ascii_islower(input[i + 1])))) { + first_word = false; + result.push_back(input[i]); + } else { + result.push_back(ascii_tolower(input[i])); + continue; + } + } else if (capitalize_next) { + capitalize_next = false; + if (ascii_islower(input[i])) { + result.push_back(ascii_toupper(input[i])); + continue; + } else { + result.push_back(input[i]); + continue; + } + } else { + result.push_back(ascii_tolower(input[i])); + } + } + return result; +} + +string ToSnakeCase(StringPiece input) { + bool was_not_underscore = false; // Initialize to false for case 1 (below) + bool was_not_cap = false; + string result; + result.reserve(input.size() << 1); + + for (size_t i = 0; i < input.size(); ++i) { + if (ascii_isupper(input[i])) { + // Consider when the current character B is capitalized: + // 1) At beginning of input: "B..." => "b..." + // (e.g. "Biscuit" => "biscuit") + // 2) Following a lowercase: "...aB..." => "...a_b..." + // (e.g. "gBike" => "g_bike") + // 3) At the end of input: "...AB" => "...ab" + // (e.g. "GoogleLAB" => "google_lab") + // 4) Followed by a lowercase: "...ABc..." => "...a_bc..." + // (e.g. "GBike" => "g_bike") + if (was_not_underscore && // case 1 out + (was_not_cap || // case 2 in, case 3 out + (i + 1 < input.size() && // case 3 out + ascii_islower(input[i + 1])))) { // case 4 in + // We add an underscore for case 2 and case 4. + result.push_back('_'); + } + result.push_back(ascii_tolower(input[i])); + was_not_underscore = true; + was_not_cap = false; + } else { + result.push_back(input[i]); + was_not_underscore = input[i] != '_'; + was_not_cap = true; + } + } + return result; +} + +set<string>* well_known_types_ = NULL; +GOOGLE_PROTOBUF_DECLARE_ONCE(well_known_types_init_); +const char* well_known_types_name_array_[] = { + "google.protobuf.Timestamp", "google.protobuf.Duration", + "google.protobuf.DoubleValue", "google.protobuf.FloatValue", + "google.protobuf.Int64Value", "google.protobuf.UInt64Value", + "google.protobuf.Int32Value", "google.protobuf.UInt32Value", + "google.protobuf.BoolValue", "google.protobuf.StringValue", + "google.protobuf.BytesValue", "google.protobuf.FieldMask"}; + +void DeleteWellKnownTypes() { delete well_known_types_; } + +void InitWellKnownTypes() { + well_known_types_ = new set<string>; + for (int i = 0; i < GOOGLE_ARRAYSIZE(well_known_types_name_array_); ++i) { + well_known_types_->insert(well_known_types_name_array_[i]); + } + google::protobuf::internal::OnShutdown(&DeleteWellKnownTypes); +} + +bool IsWellKnownType(const string& type_name) { + InitWellKnownTypes(); + return ContainsKey(*well_known_types_, type_name); +} + +bool IsValidBoolString(const string& bool_string) { + return bool_string == "true" || bool_string == "false" || + bool_string == "1" || bool_string == "0"; +} + +bool IsMap(const google::protobuf::Field& field, + const google::protobuf::Type& type) { + return (field.cardinality() == + google::protobuf::Field_Cardinality_CARDINALITY_REPEATED && + GetBoolOptionOrDefault(type.options(), + "google.protobuf.MessageOptions.map_entry", false)); +} + +bool IsMessageSetWireFormat(const google::protobuf::Type& type) { + return GetBoolOptionOrDefault( + type.options(), "google.protobuf.MessageOptions.message_set_wire_format", false); +} + +string DoubleAsString(double value) { + if (MathLimits<double>::IsPosInf(value)) return "Infinity"; + if (MathLimits<double>::IsNegInf(value)) return "-Infinity"; + if (MathLimits<double>::IsNaN(value)) return "NaN"; + + return SimpleDtoa(value); +} + +string FloatAsString(float value) { + if (MathLimits<float>::IsFinite(value)) return SimpleFtoa(value); + return DoubleAsString(value); +} + +bool SafeStrToFloat(StringPiece str, float* value) { + double double_value; + if (!safe_strtod(str, &double_value)) { + return false; + } + + if (MathLimits<double>::IsInf(double_value) || + MathLimits<double>::IsNaN(double_value)) + return false; + + // Fail if the value is not representable in float. + if (double_value > std::numeric_limits<float>::max() || + double_value < -std::numeric_limits<float>::max()) { + return false; + } + + *value = static_cast<float>(double_value); + return true; +} + +} // namespace converter +} // namespace util +} // namespace protobuf +} // namespace google |