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author | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
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committer | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
commit | 5f8de423f190bbb79a62f804151bc24824fa32d8 (patch) | |
tree | 10027f336435511475e392454359edea8e25895d /security/nss/gtests/nss_bogo_shim/config.h | |
parent | 49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff) | |
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Add m-esr52 at 52.6.0
Diffstat (limited to 'security/nss/gtests/nss_bogo_shim/config.h')
-rw-r--r-- | security/nss/gtests/nss_bogo_shim/config.h | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/security/nss/gtests/nss_bogo_shim/config.h b/security/nss/gtests/nss_bogo_shim/config.h new file mode 100644 index 000000000..3764783bc --- /dev/null +++ b/security/nss/gtests/nss_bogo_shim/config.h @@ -0,0 +1,93 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim: set ts=2 et sw=2 tw=80: */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this file, + * You can obtain one at http://mozilla.org/MPL/2.0/. */ + +// Generic command line flags system for NSS BoGo shim. This class +// could actually in principle handle other programs. The flags are +// defined in the consumer code. + +#ifndef config_h_ +#define config_h_ + +#include <cassert> + +#include <iostream> +#include <map> +#include <memory> +#include <queue> +#include <string> +#include <typeinfo> + +// Abstract base class for a given config flag. +class ConfigEntryBase { + public: + ConfigEntryBase(const std::string& name, const std::string& type) + : name_(name), type_(type) {} + + virtual ~ConfigEntryBase() {} + + const std::string& type() const { return type_; } + virtual bool Parse(std::queue<const char*>* args) = 0; + + protected: + bool ParseInternal(std::queue<const char*>* args, std::string* out); + bool ParseInternal(std::queue<const char*>* args, int* out); + bool ParseInternal(std::queue<const char*>* args, bool* out); + + const std::string name_; + const std::string type_; +}; + +// Template specializations for the concrete flag types. +template <typename T> +class ConfigEntry : public ConfigEntryBase { + public: + ConfigEntry(const std::string& name, T init) + : ConfigEntryBase(name, typeid(T).name()), value_(init) {} + T get() const { return value_; } + + bool Parse(std::queue<const char*>* args) { + return ParseInternal(args, &value_); + } + + private: + T value_; +}; + +// The overall configuration (I.e., the total set of flags). +class Config { + public: + enum Status { kOK, kUnknownFlag, kMalformedArgument, kMissingValue }; + + Config() : entries_() {} + + template <typename T> + void AddEntry(const std::string& name, T init) { + entries_[name] = std::unique_ptr<ConfigEntryBase>( + new ConfigEntry<T>(name, init)); + } + + Status ParseArgs(int argc, char** argv); + + template <typename T> + T get(const std::string& key) const { + auto e = entry(key); + assert(e->type() == typeid(T).name()); + return static_cast<const ConfigEntry<T>*>(e)->get(); + } + + private: + static std::string XformFlag(const std::string& arg); + + std::map<std::string, std::unique_ptr<ConfigEntryBase>> entries_; + + const ConfigEntryBase* entry(const std::string& key) const { + auto e = entries_.find(key); + if (e == entries_.end()) return nullptr; + return e->second.get(); + } +}; + +#endif // config_h_ |