source resturcturing + CMake

1 files changed, 0 insertions, 656 deletions

diff --git a/routing.h b/routing.h
deleted file mode 100644
index 28700c1..0000000
--- a/routing.h
+++ /dev/null
@@ -1,656 +0,0 @@
-#pragma once
-
-#include <cstdint>
-#include <utility>
-#include <tuple>
-#include <unordered_map>
-#include <memory>
-#include <boost/lexical_cast.hpp>
-
-#include "common.h"
-#include "http_response.h"
-#include "http_request.h"
-#include "utility.h"
-#include "logging.h"
-
-namespace crow
-{
-    class BaseRule
-    {
-    public:
-        virtual ~BaseRule()
-        {
-        }
-        
-        virtual void validate() = 0;
-
-        virtual void handle(const request&, response&, const routing_params&) = 0;
-
-    protected:
-
-    };
-
-    template <typename ... Args>
-    class TaggedRule : public BaseRule
-    {
-    private:
-        template <typename H1, typename H2, typename H3>
-        struct call_params
-        {
-            H1& handler;
-            H2& handler_with_req;
-            H3& handler_with_req_res;
-            const routing_params& params;
-            const request& req;
-            response& res;
-        };
-
-        template <typename F, int NInt, int NUint, int NDouble, int NString, typename S1, typename S2> 
-        struct call
-        {
-        };
-
-        template <typename F, int NInt, int NUint, int NDouble, int NString, typename ... Args1, typename ... Args2> 
-        struct call<F, NInt, NUint, NDouble, NString, black_magic::S<int64_t, Args1...>, black_magic::S<Args2...>>
-        {
-            void operator()(F cparams)
-            {
-                using pushed = typename black_magic::S<Args2...>::template push_back<call_pair<int64_t, NInt>>;
-                call<F, NInt+1, NUint, NDouble, NString,
-                    black_magic::S<Args1...>, pushed>()(cparams);
-            }
-        };
-
-        template <typename F, int NInt, int NUint, int NDouble, int NString, typename ... Args1, typename ... Args2> 
-        struct call<F, NInt, NUint, NDouble, NString, black_magic::S<uint64_t, Args1...>, black_magic::S<Args2...>>
-        {
-            void operator()(F cparams)
-            {
-                using pushed = typename black_magic::S<Args2...>::template push_back<call_pair<uint64_t, NUint>>;
-                call<F, NInt, NUint+1, NDouble, NString,
-                    black_magic::S<Args1...>, pushed>()(cparams);
-            }
-        };
-
-        template <typename F, int NInt, int NUint, int NDouble, int NString, typename ... Args1, typename ... Args2> 
-        struct call<F, NInt, NUint, NDouble, NString, black_magic::S<double, Args1...>, black_magic::S<Args2...>>
-        {
-            void operator()(F cparams)
-            {
-                using pushed = typename black_magic::S<Args2...>::template push_back<call_pair<double, NDouble>>;
-                call<F, NInt, NUint, NDouble+1, NString,
-                    black_magic::S<Args1...>, pushed>()(cparams);
-            }
-        };
-
-        template <typename F, int NInt, int NUint, int NDouble, int NString, typename ... Args1, typename ... Args2> 
-        struct call<F, NInt, NUint, NDouble, NString, black_magic::S<std::string, Args1...>, black_magic::S<Args2...>>
-        {
-            void operator()(F cparams)
-            {
-                using pushed = typename black_magic::S<Args2...>::template push_back<call_pair<std::string, NString>>;
-                call<F, NInt, NUint, NDouble, NString+1,
-                    black_magic::S<Args1...>, pushed>()(cparams);
-            }
-        };
-
-        template <typename F, int NInt, int NUint, int NDouble, int NString, typename ... Args1> 
-        struct call<F, NInt, NUint, NDouble, NString, black_magic::S<>, black_magic::S<Args1...>>
-        {
-            void operator()(F cparams)
-            {
-                if (cparams.handler) 
-                {
-                    cparams.res = cparams.handler(
-                        cparams.params.template get<typename Args1::type>(Args1::pos)... 
-                    );
-                    cparams.res.end();
-                    return;
-                }
-                if (cparams.handler_with_req)
-                {
-                    cparams.res = cparams.handler_with_req(
-                        cparams.req,
-                        cparams.params.template get<typename Args1::type>(Args1::pos)... 
-                    );
-                    cparams.res.end();
-                    return;
-                }
-                if (cparams.handler_with_req_res)
-                {
-                    cparams.handler_with_req_res(
-                        cparams.req,
-                        cparams.res,
-                        cparams.params.template get<typename Args1::type>(Args1::pos)... 
-                    );
-                    return;
-                }
-#ifdef CROW_ENABLE_LOGGING
-                std::cerr << "ERROR cannot find handler" << std::endl;
-#endif
-                // we already found matched url; this is server error
-                cparams.res = response(500);
-            }
-        };
-    public:
-        using self_t = TaggedRule<Args...>;
-        TaggedRule(std::string rule)
-            : rule_(std::move(rule))
-        {
-        }
-        
-        self_t& name(std::string name) noexcept
-        {
-            name_ = std::move(name);
-            return *this;
-        }
-
-        self_t& methods(HTTPMethod method)
-        {
-            methods_ = 1<<(int)method;
-        }
-
-        template <typename ... MethodArgs>
-        self_t& methods(HTTPMethod method, MethodArgs ... args_method)
-        {
-            methods(args_method...);
-            methods_ |= 1<<(int)method;
-        }
-
-        void validate()
-        {
-            if (!handler_ && !handler_with_req_ && !handler_with_req_res_)
-            {
-                throw std::runtime_error(name_ + (!name_.empty() ? ": " : "") + "no handler for url " + rule_);
-            }
-        }
-
-        template <typename Func>
-        typename std::enable_if<black_magic::CallHelper<Func, black_magic::S<Args...>>::value, void>::type
-        operator()(Func&& f)
-        {
-            static_assert(black_magic::CallHelper<Func, black_magic::S<Args...>>::value ||
-                black_magic::CallHelper<Func, black_magic::S<crow::request, Args...>>::value , 
-                "Handler type is mismatched with URL paramters");
-            static_assert(!std::is_same<void, decltype(f(std::declval<Args>()...))>::value, 
-                "Handler function cannot have void return type; valid return types: string, int, crow::resposne, crow::json::wvalue");
-
-                handler_ = [f = std::move(f)](Args ... args){
-                    return response(f(args...));
-                };
-                handler_with_req_ = nullptr;
-                handler_with_req_res_ = nullptr;
-        }
-
-        template <typename Func>
-        typename std::enable_if<
-            !black_magic::CallHelper<Func, black_magic::S<Args...>>::value &&
-            black_magic::CallHelper<Func, black_magic::S<crow::request, Args...>>::value, 
-            void>::type
-        operator()(Func&& f)
-        {
-            static_assert(black_magic::CallHelper<Func, black_magic::S<Args...>>::value ||
-                black_magic::CallHelper<Func, black_magic::S<crow::request, Args...>>::value, 
-                "Handler type is mismatched with URL paramters");
-            static_assert(!std::is_same<void, decltype(f(std::declval<crow::request>(), std::declval<Args>()...))>::value, 
-                "Handler function cannot have void return type; valid return types: string, int, crow::resposne, crow::json::wvalue");
-
-                handler_with_req_ = [f = std::move(f)](const crow::request& req, Args ... args){
-                    return response(f(req, args...));
-                };
-                handler_ = nullptr;
-                handler_with_req_res_ = nullptr;
-        }
-
-        template <typename Func>
-        typename std::enable_if<
-            !black_magic::CallHelper<Func, black_magic::S<Args...>>::value &&
-            !black_magic::CallHelper<Func, black_magic::S<crow::request, Args...>>::value, 
-            void>::type
-        operator()(Func&& f)
-        {
-            static_assert(black_magic::CallHelper<Func, black_magic::S<Args...>>::value ||
-                black_magic::CallHelper<Func, black_magic::S<crow::request, Args...>>::value ||
-                black_magic::CallHelper<Func, black_magic::S<crow::request, crow::response&, Args...>>::value
-                , 
-                "Handler type is mismatched with URL paramters");
-            static_assert(std::is_same<void, decltype(f(std::declval<crow::request>(), std::declval<crow::response&>(), std::declval<Args>()...))>::value, 
-                "Handler function with response argument should have void return type");
-
-                handler_with_req_res_ = std::move(f);
-                //[f = std::move(f)](const crow::request& req, crow::response& res, Args ... args){
-                //    f(req, response, args...);
-                //};
-                handler_ = nullptr;
-                handler_with_req_ = nullptr;
-        }
-
-        template <typename Func>
-        void operator()(std::string name, Func&& f)
-        {
-            name_ = std::move(name);
-            (*this).template operator()<Func>(std::forward(f));
-        }
-
-        void handle(const request& req, response& res, const routing_params& params) override
-        {
-            call<
-                call_params<
-                    decltype(handler_), 
-                    decltype(handler_with_req_),
-                    decltype(handler_with_req_res_)>, 
-                0, 0, 0, 0, 
-                black_magic::S<Args...>, 
-                black_magic::S<>
-            >()(
-                call_params<
-                    decltype(handler_), 
-                    decltype(handler_with_req_),
-                    decltype(handler_with_req_res_)>
-                {handler_, handler_with_req_, handler_with_req_res_, params, req, res}
-            );
-        }
-
-    private:
-        std::function<response(Args...)> handler_;
-        std::function<response(const crow::request&, Args...)> handler_with_req_;
-        std::function<void(const crow::request&, crow::response&, Args...)> handler_with_req_res_;
-
-        std::string rule_;
-        std::string name_;
-        uint32_t methods_{1<<(int)HTTPMethod::GET};
-
-        template <typename T, int Pos>
-        struct call_pair
-        {
-            using type = T;
-            static const int pos = Pos;
-        };
-
-        friend class Router;
-    };
-
-    class Trie
-    {
-    public:
-        struct Node
-        {
-            unsigned rule_index{};
-            std::array<unsigned, (int)ParamType::MAX> param_childrens{};
-            std::unordered_map<std::string, unsigned> children;
-
-            bool IsSimpleNode() const
-            {
-                return 
-                    !rule_index &&
-                    std::all_of(
-                        std::begin(param_childrens), 
-                        std::end(param_childrens), 
-                        [](unsigned x){ return !x; });
-            }
-        };
-
-        Trie() : nodes_(1)
-        {
-        }
-
-private:
-        void optimizeNode(Node* node)
-        {
-            for(auto x : node->param_childrens)
-            {
-                if (!x)
-                    continue;
-                Node* child = &nodes_[x];
-                optimizeNode(child);
-            }
-            if (node->children.empty())
-                return;
-            bool mergeWithChild = true;
-            for(auto& kv : node->children)
-            {
-                Node* child = &nodes_[kv.second];
-                if (!child->IsSimpleNode())
-                {
-                    mergeWithChild = false;
-                    break;
-                }
-            }
-            if (mergeWithChild)
-            {
-                decltype(node->children) merged;
-                for(auto& kv : node->children)
-                {
-                    Node* child = &nodes_[kv.second];
-                    for(auto& child_kv : child->children)
-                    {
-                        merged[kv.first + child_kv.first] = child_kv.second;
-                    }
-                }
-                node->children = std::move(merged);
-                optimizeNode(node);
-            }
-            else
-            {
-                for(auto& kv : node->children)
-                {
-                    Node* child = &nodes_[kv.second];
-                    optimizeNode(child);
-                }
-            }
-        }
-
-        void optimize()
-        {
-            optimizeNode(head());
-        }
-
-public:
-        void validate()
-        {
-            if (!head()->IsSimpleNode())
-                throw std::runtime_error("Internal error: Trie header should be simple!");
-            optimize();
-        }
-
-        std::pair<unsigned, routing_params> find(const request& req, const Node* node = nullptr, unsigned pos = 0, routing_params* params = nullptr) const
-        {
-            routing_params empty;
-            if (params == nullptr)
-                params = &empty;
-
-            unsigned found{};
-            routing_params match_params;
-
-            if (node == nullptr)
-                node = head();
-            if (pos == req.url.size())
-                return {node->rule_index, *params};
-
-            auto update_found = [&found, &match_params](std::pair<unsigned, routing_params>& ret)
-            {
-                if (ret.first && (!found || found > ret.first))
-                {
-                    found = ret.first;
-                    match_params = std::move(ret.second);
-                }
-            };
-
-            if (node->param_childrens[(int)ParamType::INT])
-            {
-                char c = req.url[pos];
-                if ((c >= '0' && c <= '9') || c == '+' || c == '-')
-                {
-                    char* eptr;
-                    errno = 0;
-                    long long int value = strtoll(req.url.data()+pos, &eptr, 10);
-                    if (errno != ERANGE && eptr != req.url.data()+pos)
-                    {
-                        params->int_params.push_back(value);
-                        auto ret = find(req, &nodes_[node->param_childrens[(int)ParamType::INT]], eptr - req.url.data(), params);
-                        update_found(ret);
-                        params->int_params.pop_back();
-                    }
-                }
-            }
-
-            if (node->param_childrens[(int)ParamType::UINT])
-            {
-                char c = req.url[pos];
-                if ((c >= '0' && c <= '9') || c == '+')
-                {
-                    char* eptr;
-                    errno = 0;
-                    unsigned long long int value = strtoull(req.url.data()+pos, &eptr, 10);
-                    if (errno != ERANGE && eptr != req.url.data()+pos)
-                    {
-                        params->uint_params.push_back(value);
-                        auto ret = find(req, &nodes_[node->param_childrens[(int)ParamType::UINT]], eptr - req.url.data(), params);
-                        update_found(ret);
-                        params->uint_params.pop_back();
-                    }
-                }
-            }
-
-            if (node->param_childrens[(int)ParamType::DOUBLE])
-            {
-                char c = req.url[pos];
-                if ((c >= '0' && c <= '9') || c == '+' || c == '-' || c == '.')
-                {
-                    char* eptr;
-                    errno = 0;
-                    double value = strtod(req.url.data()+pos, &eptr);
-                    if (errno != ERANGE && eptr != req.url.data()+pos)
-                    {
-                        params->double_params.push_back(value);
-                        auto ret = find(req, &nodes_[node->param_childrens[(int)ParamType::DOUBLE]], eptr - req.url.data(), params);
-                        update_found(ret);
-                        params->double_params.pop_back();
-                    }
-                }
-            }
-
-            if (node->param_childrens[(int)ParamType::STRING])
-            {
-                size_t epos = pos;
-                for(; epos < req.url.size(); epos ++)
-                {
-                    if (req.url[epos] == '/')
-                        break;
-                }
-
-                if (epos != pos)
-                {
-                    params->string_params.push_back(req.url.substr(pos, epos-pos));
-                    auto ret = find(req, &nodes_[node->param_childrens[(int)ParamType::STRING]], epos, params);
-                    update_found(ret);
-                    params->string_params.pop_back();
-                }
-            }
-
-            if (node->param_childrens[(int)ParamType::PATH])
-            {
-                size_t epos = req.url.size();
-
-                if (epos != pos)
-                {
-                    params->string_params.push_back(req.url.substr(pos, epos-pos));
-                    auto ret = find(req, &nodes_[node->param_childrens[(int)ParamType::PATH]], epos, params);
-                    update_found(ret);
-                    params->string_params.pop_back();
-                }
-            }
-
-            for(auto& kv : node->children)
-            {
-                const std::string& fragment = kv.first;
-                const Node* child = &nodes_[kv.second];
-
-                if (req.url.compare(pos, fragment.size(), fragment) == 0)
-                {
-                    auto ret = find(req, child, pos + fragment.size(), params);
-                    update_found(ret);
-                }
-            }
-
-            return {found, match_params};
-        }
-
-        void add(const std::string& url, unsigned rule_index)
-        {
-            unsigned idx{0};
-
-            for(unsigned i = 0; i < url.size(); i ++)
-            {
-                char c = url[i];
-                if (c == '<')
-                {
-                    static struct ParamTraits
-                    {
-                        ParamType type;
-                        std::string name;
-                    } paramTraits[] =
-                    {
-                        { ParamType::INT, "<int>" },
-                        { ParamType::UINT, "<uint>" },
-                        { ParamType::DOUBLE, "<float>" },
-                        { ParamType::DOUBLE, "<double>" },
-                        { ParamType::STRING, "<str>" },
-                        { ParamType::STRING, "<string>" },
-                        { ParamType::PATH, "<path>" },
-                    };
-
-                    for(auto& x:paramTraits)
-                    {
-                        if (url.compare(i, x.name.size(), x.name) == 0)
-                        {
-                            if (!nodes_[idx].param_childrens[(int)x.type])
-                            {
-                                auto new_node_idx = new_node();
-                                nodes_[idx].param_childrens[(int)x.type] = new_node_idx;
-                            }
-                            idx = nodes_[idx].param_childrens[(int)x.type];
-                            i += x.name.size();
-                            break;
-                        }
-                    }
-
-                    i --;
-                }
-                else
-                {
-                    std::string piece(&c, 1);
-                    if (!nodes_[idx].children.count(piece))
-                    {
-                        auto new_node_idx = new_node();
-                        nodes_[idx].children.emplace(piece, new_node_idx);
-                    }
-                    idx = nodes_[idx].children[piece];
-                }
-            }
-            if (nodes_[idx].rule_index)
-                throw std::runtime_error("handler already exists for " + url);
-            nodes_[idx].rule_index = rule_index;
-        }
-    private:
-        void debug_node_print(Node* n, int level)
-        {
-            for(int i = 0; i < (int)ParamType::MAX; i ++)
-            {
-                if (n->param_childrens[i])
-                {
-                    CROW_LOG_DEBUG << std::string(2*level, ' ') /*<< "("<<n->param_childrens[i]<<") "*/;
-                    switch((ParamType)i)
-                    {
-                        case ParamType::INT:
-                            CROW_LOG_DEBUG << "<int>";
-                            break;
-                        case ParamType::UINT:
-                            CROW_LOG_DEBUG << "<uint>";
-                            break;
-                        case ParamType::DOUBLE:
-                            CROW_LOG_DEBUG << "<float>";
-                            break;
-                        case ParamType::STRING:
-                            CROW_LOG_DEBUG << "<str>";
-                            break;
-                        case ParamType::PATH:
-                            CROW_LOG_DEBUG << "<path>";
-                            break;
-                        default:
-                            CROW_LOG_DEBUG << "<ERROR>";
-                            break;
-                    }
-
-                    debug_node_print(&nodes_[n->param_childrens[i]], level+1);
-                }
-            }
-            for(auto& kv : n->children)
-            {
-                CROW_LOG_DEBUG << std::string(2*level, ' ') /*<< "(" << kv.second << ") "*/ << kv.first;
-                debug_node_print(&nodes_[kv.second], level+1);
-            }
-        }
-
-    public:
-        void debug_print()
-        {
-            debug_node_print(head(), 0);
-        }
-
-    private:
-        const Node* head() const
-        {
-            return &nodes_.front();
-        }
-
-        Node* head()
-        {
-            return &nodes_.front();
-        }
-
-        unsigned new_node()
-        {
-            nodes_.resize(nodes_.size()+1);
-            return nodes_.size() - 1;
-        }
-
-        std::vector<Node> nodes_;
-    };
-
-    class Router
-    {
-    public:
-        Router() : rules_(1) {}
-        template <uint64_t N>
-        typename black_magic::arguments<N>::type::template rebind<TaggedRule>& new_rule_tagged(const std::string& rule)
-        {
-            using RuleT = typename black_magic::arguments<N>::type::template rebind<TaggedRule>;
-            auto ruleObject = new RuleT(rule);
-            rules_.emplace_back(ruleObject);
-            trie_.add(rule, rules_.size() - 1);
-            return *ruleObject;
-        }
-
-        void validate()
-        {
-            trie_.validate();
-            for(auto& rule:rules_)
-            {
-                if (rule)
-                    rule->validate();
-            }
-        }
-
-        void handle(const request& req, response& res)
-        {
-            auto found = trie_.find(req);
-
-            unsigned rule_index = found.first;
-
-            if (!rule_index)
-            {
-				CROW_LOG_DEBUG << "Cannot match rules " << req.url;
-                res = response(404);
-				res.end();
-                return;
-            }
-
-            if (rule_index >= rules_.size())
-                throw std::runtime_error("Trie internal structure corrupted!");
-
-            CROW_LOG_DEBUG << "Matched rule '" << ((TaggedRule<>*)rules_[rule_index].get())->rule_ << "'";
-
-            rules_[rule_index]->handle(req, res, found.second);
-        }
-
-        void debug_print()
-        {
-            trie_.debug_print();
-        }
-
-    private:
-        std::vector<std::unique_ptr<BaseRule>> rules_;
-        Trie trie_;
-    };
-}