mirror of
https://github.com/yhirose/cpp-peglib.git
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Added server mode.
This commit is contained in:
Yuji Hirose
parent
adcd259268
commit
444398d1bb
959
lint/cmdline/httplib.h
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959
lint/cmdline/httplib.h
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@ -0,0 +1,959 @@
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//
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// httplib.h
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//
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// Copyright (c) 2012 Yuji Hirose. All rights reserved.
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// The Boost Software License 1.0
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//
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#ifndef _CPPHTTPLIB_HTTPSLIB_H_
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#define _CPPHTTPLIB_HTTPSLIB_H_
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#ifdef _MSC_VER
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#define _CRT_SECURE_NO_WARNINGS
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#define _CRT_NONSTDC_NO_DEPRECATE
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#ifndef SO_SYNCHRONOUS_NONALERT
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#define SO_SYNCHRONOUS_NONALERT 0x20;
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#endif
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#ifndef SO_OPENTYPE
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#define SO_OPENTYPE 0x7008
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#endif
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#if (_MSC_VER < 1900)
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#define snprintf _snprintf_s
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#endif
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#define S_ISREG(m) (((m)&S_IFREG)==S_IFREG)
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#define S_ISDIR(m) (((m)&S_IFDIR)==S_IFDIR)
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#include <fcntl.h>
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#include <io.h>
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#include <winsock2.h>
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#include <ws2tcpip.h>
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#undef min
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#undef max
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typedef SOCKET socket_t;
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#else
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#include <pthread.h>
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#include <unistd.h>
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#include <netdb.h>
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#include <cstring>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <sys/socket.h>
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typedef int socket_t;
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#endif
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#include <fstream>
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#include <functional>
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#include <map>
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#include <memory>
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#include <regex>
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#include <string>
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#include <sys/stat.h>
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#include <assert.h>
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namespace httplib
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{
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typedef std::map<std::string, std::string> Map;
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typedef std::multimap<std::string, std::string> MultiMap;
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typedef std::smatch Match;
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struct Request {
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std::string method;
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std::string url;
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MultiMap headers;
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std::string body;
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Map params;
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Match matches;
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bool has_header(const char* key) const;
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std::string get_header_value(const char* key) const;
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void set_header(const char* key, const char* val);
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bool has_param(const char* key) const;
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};
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struct Response {
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int status;
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MultiMap headers;
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std::string body;
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bool has_header(const char* key) const;
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std::string get_header_value(const char* key) const;
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void set_header(const char* key, const char* val);
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void set_redirect(const char* url);
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void set_content(const char* s, size_t n, const char* content_type);
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void set_content(const std::string& s, const char* content_type);
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Response() : status(-1) {}
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};
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class Server {
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public:
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typedef std::function<void (const Request&, Response&)> Handler;
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typedef std::function<void (const Request&, const Response&)> Logger;
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Server();
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void get(const char* pattern, Handler handler);
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void post(const char* pattern, Handler handler);
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bool set_base_dir(const char* path);
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void set_error_handler(Handler handler);
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void set_logger(Logger logger);
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bool listen(const char* host, int port);
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void stop();
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private:
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typedef std::vector<std::pair<std::regex, Handler>> Handlers;
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void process_request(FILE* fp_read, FILE* fp_write);
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bool read_request_line(FILE* fp, Request& req);
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bool routing(Request& req, Response& res);
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bool handle_file_request(Request& req, Response& res);
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bool dispatch_request(Request& req, Response& res, Handlers& handlers);
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socket_t svr_sock_;
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std::string base_dir_;
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Handlers get_handlers_;
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Handlers post_handlers_;
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Handler error_handler_;
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Logger logger_;
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};
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class Client {
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public:
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Client(const char* host, int port);
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std::shared_ptr<Response> get(const char* url);
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std::shared_ptr<Response> head(const char* url);
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std::shared_ptr<Response> post(const char* url, const std::string& body, const char* content_type);
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std::shared_ptr<Response> post(const char* url, const Map& params);
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bool send(const Request& req, Response& res);
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private:
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bool read_response_line(FILE* fp, Response& res);
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const std::string host_;
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const int port_;
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};
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// Implementation
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namespace detail {
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template <class Fn>
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void split(const char* b, const char* e, char d, Fn fn)
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{
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int i = 0;
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int beg = 0;
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while (e ? (b + i != e) : (b[i] != '\0')) {
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if (b[i] == d) {
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fn(&b[beg], &b[i]);
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beg = i + 1;
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}
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i++;
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}
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if (i) {
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fn(&b[beg], &b[i]);
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}
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}
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template <typename T>
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inline bool read_and_close_socket(socket_t sock, T callback)
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{
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FILE* fp_read;
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FILE* fp_write;
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#ifdef _MSC_VER
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int osfhandle = _open_osfhandle(sock, _O_RDONLY);
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fp_read = _fdopen(osfhandle, "rb");
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fp_write = _fdopen(osfhandle, "wb");
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#else
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fp_read = fdopen(sock, "rb");
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fp_write = fdopen(sock, "wb");
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#endif
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auto ret = callback(fp_read, fp_write);
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#ifdef _MSC_VER
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sock = osfhandle;
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#else
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fclose(fp_read);
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fclose(fp_write);
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#endif
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return ret;
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}
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inline int shutdown_socket(socket_t sock)
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{
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#ifdef _MSC_VER
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return shutdown(sock, SD_BOTH);
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#else
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return shutdown(sock, SHUT_RDWR);
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#endif
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}
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inline int close_socket(socket_t sock)
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{
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#ifdef _MSC_VER
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return closesocket(sock);
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#else
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return close(sock);
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#endif
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}
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template <typename Fn>
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socket_t create_socket(const char* host, int port, Fn fn)
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{
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#ifdef _MSC_VER
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int opt = SO_SYNCHRONOUS_NONALERT;
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setsockopt(INVALID_SOCKET, SOL_SOCKET, SO_OPENTYPE, (char*)&opt, sizeof(opt));
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#endif
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// Get address info
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struct addrinfo hints;
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struct addrinfo *result;
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memset(&hints, 0, sizeof(struct addrinfo));
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hints.ai_family = AF_UNSPEC;
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hints.ai_socktype = SOCK_STREAM;
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hints.ai_flags = 0;
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hints.ai_protocol = 0;
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auto service = std::to_string(port);
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if (getaddrinfo(host, service.c_str(), &hints, &result)) {
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return -1;
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}
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for (auto rp = result; rp; rp = rp->ai_next) {
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// Create a socket
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auto sock = socket(rp->ai_family, rp->ai_socktype, rp->ai_protocol);
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if (sock == -1) {
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continue;
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}
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// Make 'reuse address' option available
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int yes = 1;
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setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (char*)&yes, sizeof(yes));
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// bind or connect
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if (fn(sock, *rp)) {
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freeaddrinfo(result);
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return sock;
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}
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close_socket(sock);
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}
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freeaddrinfo(result);
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return -1;
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}
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inline socket_t create_server_socket(const char* host, int port)
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{
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return create_socket(host, port, [](socket_t sock, struct addrinfo& ai) -> socket_t {
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if (::bind(sock, ai.ai_addr, ai.ai_addrlen)) {
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return false;
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}
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if (listen(sock, 5)) { // Listen through 5 channels
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return false;
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}
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return true;
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});
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}
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inline socket_t create_client_socket(const char* host, int port)
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{
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return create_socket(host, port, [](socket_t sock, struct addrinfo& ai) -> socket_t {
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if (connect(sock, ai.ai_addr, ai.ai_addrlen)) {
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return false;
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}
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return true;
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});
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}
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inline bool is_file(const std::string& s)
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{
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struct stat st;
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return stat(s.c_str(), &st) >= 0 && S_ISREG(st.st_mode);
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}
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inline bool is_dir(const std::string& s)
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{
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struct stat st;
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return stat(s.c_str(), &st) >= 0 && S_ISDIR(st.st_mode);
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}
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inline void read_file(const std::string& path, std::string& out)
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{
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std::ifstream fs(path, std::ios_base::binary);
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fs.seekg(0, std::ios_base::end);
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auto size = fs.tellg();
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fs.seekg(0);
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out.resize(size);
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fs.read(&out[0], size);
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}
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inline std::string get_file_extention(const std::string& path)
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{
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std::smatch m;
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auto pat = std::regex("\\.([a-zA-Z0-9]+)$");
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auto ret = std::regex_search(path, m, pat);
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std::string content_type;
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if (ret) {
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return m[1].str();
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}
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return std::string();
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}
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inline const char* get_content_type_from_file_extention(const std::string& ext)
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{
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if (ext == "html") {
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return "text/html";
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}
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return "text/plain";
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}
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inline const char* status_message(int status)
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{
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switch (status) {
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case 200: return "OK";
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case 400: return "Bad Request";
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case 404: return "Not Found";
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default:
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case 500: return "Internal Server Error";
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}
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}
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inline const char* get_header_value(const MultiMap& map, const char* key, const char* def)
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{
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auto it = map.find(key);
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if (it != map.end()) {
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return it->second.c_str();
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}
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return def;
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}
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inline int get_header_value_int(const MultiMap& map, const char* key, int def)
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{
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auto it = map.find(key);
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if (it != map.end()) {
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return std::stoi(it->second);
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}
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return def;
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}
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inline bool read_headers(FILE* fp, MultiMap& headers)
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{
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static std::regex re("(.+?): (.+?)\r\n");
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const auto BUFSIZ_HEADER = 2048;
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char buf[BUFSIZ_HEADER];
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for (;;) {
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if (!fgets(buf, BUFSIZ_HEADER, fp)) {
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return false;
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}
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if (!strcmp(buf, "\r\n")) {
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break;
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}
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std::cmatch m;
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if (std::regex_match(buf, m, re)) {
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auto key = std::string(m[1]);
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auto val = std::string(m[2]);
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headers.insert(std::make_pair(key, val));
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}
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}
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return true;
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}
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template <typename T>
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bool read_content(T& x, FILE* fp)
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{
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auto len = get_header_value_int(x.headers, "Content-Length", 0);
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if (len) {
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x.body.assign(len, 0);
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if (!fread(&x.body[0], x.body.size(), 1, fp)) {
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return false;
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}
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}
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return true;
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}
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template <typename T>
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inline void write_headers(FILE* fp, const T& res)
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{
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fprintf(fp, "Connection: close\r\n");
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for (const auto& x: res.headers) {
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if (x.first != "Content-Type" && x.first != "Content-Length") {
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fprintf(fp, "%s: %s\r\n", x.first.c_str(), x.second.c_str());
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}
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}
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auto t = get_header_value(res.headers, "Content-Type", "text/plain");
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fprintf(fp, "Content-Type: %s\r\n", t);
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fprintf(fp, "Content-Length: %ld\r\n", res.body.size());
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fprintf(fp, "\r\n");
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}
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inline void write_response(FILE* fp, const Request& req, const Response& res)
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{
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fprintf(fp, "HTTP/1.0 %d %s\r\n", res.status, status_message(res.status));
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write_headers(fp, res);
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if (!res.body.empty() && req.method != "HEAD") {
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fprintf(fp, "%s", res.body.c_str());
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}
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}
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inline std::string encode_url(const std::string& s)
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{
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std::string result;
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for (auto i = 0; s[i]; i++) {
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switch (s[i]) {
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case ' ': result += "+"; break;
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case '\'': result += "%27"; break;
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case ',': result += "%2C"; break;
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case ':': result += "%3A"; break;
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case ';': result += "%3B"; break;
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default:
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if (s[i] < 0) {
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result += '%';
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char hex[4];
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size_t len = snprintf(hex, sizeof(hex), "%02X", (unsigned char)s[i]);
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assert(len == 2);
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result.append(hex, len);
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} else {
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result += s[i];
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}
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break;
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}
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}
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return result;
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}
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inline bool is_hex(char c, int& v)
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{
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if (0x20 <= c && isdigit(c)) {
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v = c - '0';
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return true;
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} else if ('A' <= c && c <= 'F') {
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v = c - 'A' + 10;
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return true;
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} else if ('a' <= c && c <= 'f') {
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v = c - 'a' + 10;
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return true;
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}
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return false;
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}
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inline int from_hex_to_i(const std::string& s, int i, int cnt, int& val)
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{
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val = 0;
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for (; s[i] && cnt; i++, cnt--) {
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int v = 0;
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if (is_hex(s[i], v)) {
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val = val * 16 + v;
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} else {
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break;
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}
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}
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return --i;
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}
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inline size_t to_utf8(int code, char* buff)
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{
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if (code < 0x0080) {
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buff[0] = (code & 0x7F);
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return 1;
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} else if (code < 0x0800) {
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buff[0] = (0xC0 | ((code >> 6) & 0x1F));
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buff[1] = (0x80 | (code & 0x3F));
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return 2;
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} else if (code < 0xD800) {
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buff[0] = (0xE0 | ((code >> 12) & 0xF));
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buff[1] = (0x80 | ((code >> 6) & 0x3F));
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buff[2] = (0x80 | (code & 0x3F));
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return 3;
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} else if (code < 0xE000) { // D800 - DFFF is invalid...
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return 0;
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} else if (code < 0x10000) {
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buff[0] = (0xE0 | ((code >> 12) & 0xF));
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buff[1] = (0x80 | ((code >> 6) & 0x3F));
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buff[2] = (0x80 | (code & 0x3F));
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return 3;
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} else if (code < 0x110000) {
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buff[0] = (0xF0 | ((code >> 18) & 0x7));
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buff[1] = (0x80 | ((code >> 12) & 0x3F));
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buff[2] = (0x80 | ((code >> 6) & 0x3F));
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buff[3] = (0x80 | (code & 0x3F));
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return 4;
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}
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// NOTREACHED
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return 0;
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}
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|
||||
inline std::string decode_url(const std::string& s)
|
||||
{
|
||||
std::string result;
|
||||
|
||||
for (int i = 0; s[i]; i++) {
|
||||
if (s[i] == '%') {
|
||||
i++;
|
||||
assert(s[i]);
|
||||
|
||||
if (s[i] == '%') {
|
||||
result += s[i];
|
||||
} else if (s[i] == 'u') {
|
||||
// Unicode
|
||||
i++;
|
||||
assert(s[i]);
|
||||
|
||||
int val = 0;
|
||||
i = from_hex_to_i(s, i, 4, val);
|
||||
|
||||
char buff[4];
|
||||
size_t len = to_utf8(val, buff);
|
||||
|
||||
if (len > 0) {
|
||||
result.append(buff, len);
|
||||
}
|
||||
} else {
|
||||
// HEX
|
||||
int val = 0;
|
||||
i = from_hex_to_i(s, i, 2, val);
|
||||
result += val;
|
||||
}
|
||||
} else if (s[i] == '+') {
|
||||
result += ' ';
|
||||
} else {
|
||||
result += s[i];
|
||||
}
|
||||
}
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
inline void write_request(FILE* fp, const Request& req)
|
||||
{
|
||||
auto url = encode_url(req.url);
|
||||
fprintf(fp, "%s %s HTTP/1.0\r\n", req.method.c_str(), url.c_str());
|
||||
|
||||
write_headers(fp, req);
|
||||
|
||||
if (!req.body.empty()) {
|
||||
if (req.has_header("application/x-www-form-urlencoded")) {
|
||||
fprintf(fp, "%s", encode_url(req.body).c_str());
|
||||
} else {
|
||||
fprintf(fp, "%s", req.body.c_str());
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
inline void parse_query_text(const std::string& s, Map& params)
|
||||
{
|
||||
split(&s[0], &s[s.size()], '&', [&](const char* b, const char* e) {
|
||||
std::string key;
|
||||
std::string val;
|
||||
split(b, e, '=', [&](const char* b, const char* e) {
|
||||
if (key.empty()) {
|
||||
key.assign(b, e);
|
||||
} else {
|
||||
val.assign(b, e);
|
||||
}
|
||||
});
|
||||
params[key] = detail::decode_url(val);
|
||||
});
|
||||
}
|
||||
|
||||
#ifdef _MSC_VER
|
||||
class WSInit {
|
||||
public:
|
||||
WSInit::WSInit() {
|
||||
WSADATA wsaData;
|
||||
WSAStartup(0x0002, &wsaData);
|
||||
}
|
||||
|
||||
WSInit::~WSInit() {
|
||||
WSACleanup();
|
||||
}
|
||||
};
|
||||
|
||||
static WSInit wsinit_;
|
||||
#endif
|
||||
|
||||
} // namespace detail
|
||||
|
||||
// Request implementation
|
||||
inline bool Request::has_header(const char* key) const
|
||||
{
|
||||
return headers.find(key) != headers.end();
|
||||
}
|
||||
|
||||
inline std::string Request::get_header_value(const char* key) const
|
||||
{
|
||||
return detail::get_header_value(headers, key, "");
|
||||
}
|
||||
|
||||
inline void Request::set_header(const char* key, const char* val)
|
||||
{
|
||||
headers.insert(std::make_pair(key, val));
|
||||
}
|
||||
|
||||
inline bool Request::has_param(const char* key) const
|
||||
{
|
||||
return params.find(key) != params.end();
|
||||
}
|
||||
|
||||
// Response implementation
|
||||
inline bool Response::has_header(const char* key) const
|
||||
{
|
||||
return headers.find(key) != headers.end();
|
||||
}
|
||||
|
||||
inline std::string Response::get_header_value(const char* key) const
|
||||
{
|
||||
return detail::get_header_value(headers, key, "");
|
||||
}
|
||||
|
||||
inline void Response::set_header(const char* key, const char* val)
|
||||
{
|
||||
headers.insert(std::make_pair(key, val));
|
||||
}
|
||||
|
||||
inline void Response::set_redirect(const char* url)
|
||||
{
|
||||
set_header("Location", url);
|
||||
status = 302;
|
||||
}
|
||||
|
||||
inline void Response::set_content(const char* s, size_t n, const char* content_type)
|
||||
{
|
||||
body.assign(s, n);
|
||||
set_header("Content-Type", content_type);
|
||||
}
|
||||
|
||||
inline void Response::set_content(const std::string& s, const char* content_type)
|
||||
{
|
||||
body = s;
|
||||
set_header("Content-Type", content_type);
|
||||
}
|
||||
|
||||
// HTTP server implementation
|
||||
inline Server::Server()
|
||||
: svr_sock_(-1)
|
||||
{
|
||||
}
|
||||
|
||||
inline void Server::get(const char* pattern, Handler handler)
|
||||
{
|
||||
get_handlers_.push_back(std::make_pair(std::regex(pattern), handler));
|
||||
}
|
||||
|
||||
inline void Server::post(const char* pattern, Handler handler)
|
||||
{
|
||||
post_handlers_.push_back(std::make_pair(std::regex(pattern), handler));
|
||||
}
|
||||
|
||||
inline bool Server::set_base_dir(const char* path)
|
||||
{
|
||||
if (detail::is_dir(path)) {
|
||||
base_dir_ = path;
|
||||
return true;
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
inline void Server::set_error_handler(Handler handler)
|
||||
{
|
||||
error_handler_ = handler;
|
||||
}
|
||||
|
||||
inline void Server::set_logger(Logger logger)
|
||||
{
|
||||
logger_ = logger;
|
||||
}
|
||||
|
||||
inline bool Server::listen(const char* host, int port)
|
||||
{
|
||||
svr_sock_ = detail::create_server_socket(host, port);
|
||||
if (svr_sock_ == -1) {
|
||||
return false;
|
||||
}
|
||||
|
||||
auto ret = true;
|
||||
|
||||
for (;;) {
|
||||
socket_t sock = accept(svr_sock_, NULL, NULL);
|
||||
|
||||
if (sock == -1) {
|
||||
if (svr_sock_ != -1) {
|
||||
detail::close_socket(svr_sock_);
|
||||
ret = false;
|
||||
} else {
|
||||
; // The server socket was closed by user.
|
||||
}
|
||||
break;
|
||||
}
|
||||
|
||||
// TODO: should be async
|
||||
detail::read_and_close_socket(sock, [this](FILE* fp_read, FILE* fp_write) {
|
||||
process_request(fp_read, fp_write);
|
||||
return true;
|
||||
});
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
inline void Server::stop()
|
||||
{
|
||||
detail::shutdown_socket(svr_sock_);
|
||||
detail::close_socket(svr_sock_);
|
||||
svr_sock_ = -1;
|
||||
}
|
||||
|
||||
inline bool Server::read_request_line(FILE* fp, Request& req)
|
||||
{
|
||||
const auto BUFSIZ_REQUESTLINE = 2048;
|
||||
char buf[BUFSIZ_REQUESTLINE];
|
||||
if (!fgets(buf, BUFSIZ_REQUESTLINE, fp)) {
|
||||
return false;
|
||||
}
|
||||
|
||||
static std::regex re("(GET|HEAD|POST) ([^?]+)(?:\\?(.+?))? HTTP/1\\.[01]\r\n");
|
||||
|
||||
std::cmatch m;
|
||||
if (std::regex_match(buf, m, re)) {
|
||||
req.method = std::string(m[1]);
|
||||
req.url = detail::decode_url(m[2]);
|
||||
|
||||
// Parse query text
|
||||
auto len = std::distance(m[3].first, m[3].second);
|
||||
if (len > 0) {
|
||||
detail::parse_query_text(m[3], req.params);
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
inline bool Server::handle_file_request(Request& req, Response& res)
|
||||
{
|
||||
if (!base_dir_.empty()) {
|
||||
std::string path = base_dir_ + req.url;
|
||||
|
||||
if (!path.empty() && path.back() == '/') {
|
||||
path += "index.html";
|
||||
}
|
||||
|
||||
if (detail::is_file(path)) {
|
||||
detail::read_file(path, res.body);
|
||||
res.set_header("Content-Type",
|
||||
detail::get_content_type_from_file_extention(
|
||||
detail::get_file_extention(path)));
|
||||
res.status = 200;
|
||||
return true;
|
||||
}
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
inline bool Server::routing(Request& req, Response& res)
|
||||
{
|
||||
if (req.method == "GET" && handle_file_request(req, res)) {
|
||||
return true;
|
||||
}
|
||||
|
||||
if (req.method == "GET" || req.method == "HEAD") {
|
||||
return dispatch_request(req, res, get_handlers_);
|
||||
} else if (req.method == "POST") {
|
||||
return dispatch_request(req, res, post_handlers_);
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
inline bool Server::dispatch_request(Request& req, Response& res, Handlers& handlers)
|
||||
{
|
||||
for (const auto& x: handlers) {
|
||||
const auto& pattern = x.first;
|
||||
const auto& handler = x.second;
|
||||
|
||||
if (std::regex_match(req.url, req.matches, pattern)) {
|
||||
handler(req, res);
|
||||
return true;
|
||||
}
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
inline void Server::process_request(FILE* fp_read, FILE* fp_write)
|
||||
{
|
||||
Request req;
|
||||
Response res;
|
||||
|
||||
if (!read_request_line(fp_read, req) ||
|
||||
!detail::read_headers(fp_read, req.headers)) {
|
||||
return;
|
||||
}
|
||||
|
||||
if (req.method == "POST") {
|
||||
if (!detail::read_content(req, fp_read)) {
|
||||
return;
|
||||
}
|
||||
static std::string type = "application/x-www-form-urlencoded";
|
||||
if (!req.get_header_value("Content-Type").compare(0, type.size(), type)) {
|
||||
detail::parse_query_text(req.body, req.params);
|
||||
}
|
||||
}
|
||||
|
||||
if (routing(req, res)) {
|
||||
if (res.status == -1) {
|
||||
res.status = 200;
|
||||
}
|
||||
} else {
|
||||
res.status = 404;
|
||||
}
|
||||
assert(res.status != -1);
|
||||
|
||||
if (400 <= res.status && error_handler_) {
|
||||
error_handler_(req, res);
|
||||
}
|
||||
|
||||
detail::write_response(fp_write, req, res);
|
||||
fflush(fp_write);
|
||||
|
||||
if (logger_) {
|
||||
logger_(req, res);
|
||||
}
|
||||
}
|
||||
|
||||
// HTTP client implementation
|
||||
inline Client::Client(const char* host, int port)
|
||||
: host_(host)
|
||||
, port_(port)
|
||||
{
|
||||
}
|
||||
|
||||
inline bool Client::read_response_line(FILE* fp, Response& res)
|
||||
{
|
||||
const auto BUFSIZ_RESPONSELINE = 2048;
|
||||
char buf[BUFSIZ_RESPONSELINE];
|
||||
if (!fgets(buf, BUFSIZ_RESPONSELINE, fp)) {
|
||||
return false;
|
||||
}
|
||||
|
||||
const static std::regex re("HTTP/1\\.[01] (\\d+?) .+\r\n");
|
||||
|
||||
std::cmatch m;
|
||||
if (std::regex_match(buf, m, re)) {
|
||||
res.status = std::stoi(std::string(m[1]));
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
inline bool Client::send(const Request& req, Response& res)
|
||||
{
|
||||
auto sock = detail::create_client_socket(host_.c_str(), port_);
|
||||
if (sock == -1) {
|
||||
return false;
|
||||
}
|
||||
|
||||
return detail::read_and_close_socket(sock, [&](FILE* fp_read, FILE* fp_write) {
|
||||
// Send request
|
||||
detail::write_request(fp_write, req);
|
||||
fflush(fp_write);
|
||||
|
||||
// Receive response
|
||||
if (!read_response_line(fp_read, res) ||
|
||||
!detail::read_headers(fp_read, res.headers)) {
|
||||
return false;
|
||||
}
|
||||
if (req.method != "HEAD") {
|
||||
if (!detail::read_content(res, fp_read)) {
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
return true;
|
||||
});
|
||||
}
|
||||
|
||||
inline std::shared_ptr<Response> Client::get(const char* url)
|
||||
{
|
||||
Request req;
|
||||
req.method = "GET";
|
||||
req.url = url;
|
||||
|
||||
auto res = std::make_shared<Response>();
|
||||
|
||||
return send(req, *res) ? res : nullptr;
|
||||
}
|
||||
|
||||
inline std::shared_ptr<Response> Client::head(const char* url)
|
||||
{
|
||||
Request req;
|
||||
req.method = "HEAD";
|
||||
req.url = url;
|
||||
|
||||
auto res = std::make_shared<Response>();
|
||||
|
||||
return send(req, *res) ? res : nullptr;
|
||||
}
|
||||
|
||||
inline std::shared_ptr<Response> Client::post(
|
||||
const char* url, const std::string& body, const char* content_type)
|
||||
{
|
||||
Request req;
|
||||
req.method = "POST";
|
||||
req.url = url;
|
||||
req.set_header("Content-Type", content_type);
|
||||
req.body = body;
|
||||
|
||||
auto res = std::make_shared<Response>();
|
||||
|
||||
return send(req, *res) ? res : nullptr;
|
||||
}
|
||||
|
||||
inline std::shared_ptr<Response> Client::post(
|
||||
const char* url, const Map& params)
|
||||
{
|
||||
std::string query;
|
||||
for (auto it = params.begin(); it != params.end(); ++it) {
|
||||
if (it != params.begin()) {
|
||||
query += "&";
|
||||
}
|
||||
query += it->first;
|
||||
query += "=";
|
||||
query += it->second;
|
||||
}
|
||||
|
||||
return post(url, query, "application/x-www-form-urlencoded");
|
||||
}
|
||||
|
||||
} // namespace httplib
|
||||
|
||||
#endif
|
||||
|
||||
// vim: et ts=4 sw=4 cin cino={1s ff=unix
|
||||
@ -10,6 +10,8 @@
|
||||
|
||||
using namespace std;
|
||||
|
||||
int run_server(int port, const vector<char>& syntax, const vector<char>& source);
|
||||
|
||||
bool read_file(const char* path, vector<char>& buff)
|
||||
{
|
||||
ifstream ifs(path, ios::in | ios::binary);
|
||||
@ -29,6 +31,8 @@ int main(int argc, const char** argv)
|
||||
auto opt_ast = false;
|
||||
auto opt_optimize_ast_nodes = false;
|
||||
auto opt_help = false;
|
||||
auto opt_server = false;
|
||||
int port = 1234;
|
||||
vector<const char*> path_list;
|
||||
|
||||
auto argi = 1;
|
||||
@ -40,16 +44,39 @@ int main(int argc, const char** argv)
|
||||
opt_ast = true;
|
||||
} else if (string("--optimize_ast_nodes") == arg || string("--opt") == arg) {
|
||||
opt_optimize_ast_nodes = true;
|
||||
} else if (string("--server") == arg) {
|
||||
opt_server = true;
|
||||
if (argi < argc) {
|
||||
port = std::stoi(argv[argi++]);
|
||||
}
|
||||
} else {
|
||||
path_list.push_back(arg);
|
||||
}
|
||||
}
|
||||
|
||||
if (path_list.empty() || opt_help) {
|
||||
cerr << "usage: peglint [--ast] [--optimize_ast_nodes|--opt] [grammar file path] [source file path]" << endl;
|
||||
if ((path_list.empty() && !opt_server) || opt_help) {
|
||||
cerr << "usage: peglint [--ast] [--optimize_ast_nodes|--opt] [--server [PORT=1234]] [grammar file path] [source file path]" << endl;
|
||||
return 1;
|
||||
}
|
||||
|
||||
// Sever mode
|
||||
if (opt_server) {
|
||||
vector<char> syntax;
|
||||
vector<char> source;
|
||||
|
||||
if (path_list.size() >= 1 && !read_file(path_list[0], syntax)) {
|
||||
cerr << "can't open the grammar file." << endl;
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (path_list.size() >= 2 && !read_file(path_list[1], source)) {
|
||||
cerr << "can't open the code file." << endl;
|
||||
return -1;
|
||||
}
|
||||
|
||||
return run_server(port, syntax, source);
|
||||
}
|
||||
|
||||
// Check PEG grammar
|
||||
auto syntax_path = path_list[0];
|
||||
|
||||
|
||||
@ -12,9 +12,11 @@
|
||||
</ItemGroup>
|
||||
<ItemGroup>
|
||||
<ClInclude Include="..\..\peglib.h" />
|
||||
<ClInclude Include="httplib.h" />
|
||||
</ItemGroup>
|
||||
<ItemGroup>
|
||||
<ClCompile Include="peglint.cc" />
|
||||
<ClCompile Include="server.cc" />
|
||||
</ItemGroup>
|
||||
<PropertyGroup Label="Globals">
|
||||
<ProjectGuid>{F85B641A-7538-4809-8175-C528FF632CF6}</ProjectGuid>
|
||||
|
||||
353
lint/cmdline/server.cc
Normal file
353
lint/cmdline/server.cc
Normal file
@ -0,0 +1,353 @@
|
||||
|
||||
#include "httplib.h"
|
||||
#include "peglib.h"
|
||||
#include <cstdio>
|
||||
#include <functional>
|
||||
|
||||
using namespace httplib;
|
||||
using namespace std;
|
||||
|
||||
string indexHTML = R"(
|
||||
<!DOCTYPE html>
|
||||
<html lang="en">
|
||||
<head>
|
||||
<title>PEG Playground</title>
|
||||
<style>
|
||||
* {
|
||||
box-sizing: border-box;
|
||||
margin: 0;
|
||||
padding: 0;
|
||||
text-decoration: none;
|
||||
list-style: none;
|
||||
}
|
||||
body {
|
||||
display: flex;
|
||||
display: -webkit-flex;
|
||||
flex-direction: column;
|
||||
-webkit-flex-direction: column;
|
||||
height: 100vh;
|
||||
}
|
||||
#main {
|
||||
flex: 1;
|
||||
-webkit-flex: 1;
|
||||
display: none;
|
||||
}
|
||||
.editor-container {
|
||||
flex: 1;
|
||||
-webkit-flex: 1;
|
||||
width: 100%;
|
||||
display: flex;
|
||||
display: -webkit-flex;
|
||||
flex-direction: column;
|
||||
-webkit-flex-direction: column;
|
||||
margin: 8px;
|
||||
}
|
||||
.editor-container:first-child {
|
||||
margin-right: 0;
|
||||
}
|
||||
.editor-header {
|
||||
display: flex;
|
||||
display: -webkit-flex;
|
||||
height: 48px;
|
||||
padding: 4px 8px;
|
||||
}
|
||||
.editor-header > li:last-child {
|
||||
margin-left: auto;
|
||||
}
|
||||
.editor-header > li > span {
|
||||
height: 38px;
|
||||
line-height: 38px;
|
||||
}
|
||||
.editor-header > li > a {
|
||||
height: 38px;
|
||||
line-height: 38px;
|
||||
padding: .3em .5em;
|
||||
border: 1px solid red;
|
||||
}
|
||||
.editor-validation {
|
||||
padding: 9px 11px;
|
||||
color: green;
|
||||
background-color: lightgreen;
|
||||
border-radius: 5px;
|
||||
}
|
||||
.editor-validation-invalid {
|
||||
color: red;
|
||||
background-color: pink;
|
||||
}
|
||||
.editor-area {
|
||||
flex: 1;
|
||||
-webkit-flex: 1;
|
||||
border: 1px solid lightgray;
|
||||
}
|
||||
.editor-info {
|
||||
margin-top: 6px;
|
||||
height: 160px;
|
||||
border: 1px solid lightgray;
|
||||
padding: 8px;
|
||||
}
|
||||
.editor-info li {
|
||||
cursor: pointer;
|
||||
}
|
||||
</style>
|
||||
</head>
|
||||
<body>
|
||||
|
||||
<div id="main">
|
||||
<div class="editor-container">
|
||||
<ul class="editor-header">
|
||||
<li><span>Grammar:</span></li>
|
||||
<li><span id="grammar-validation" class="editor-validation">Valid</span></li>
|
||||
</ul>
|
||||
<pre id="grammar-editor" class="editor-area">{{syntax}}</pre>
|
||||
<div id="grammar-info" class="editor-info"></div>
|
||||
</div>
|
||||
<div class="editor-container">
|
||||
<ul class="editor-header">
|
||||
<li><span>Code:</span></li>
|
||||
<li><span id="code-validation" class="editor-validation">Valid</span></li>
|
||||
</ul>
|
||||
<pre id="code-editor" class="editor-area">{{source}}</pre>
|
||||
<pre id="code-ast" class="editor-area"></pre>
|
||||
<pre id="code-ast-optimized" class="editor-area"></pre>
|
||||
<div id="code-info" class="editor-info"></div>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<script src="https://cdnjs.cloudflare.com/ajax/libs/ace/1.1.9/ace.js"></script>
|
||||
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.4/jquery.min.js"></script>
|
||||
<script>
|
||||
// Setup editros
|
||||
var grammar = ace.edit("grammar-editor");
|
||||
grammar.setShowPrintMargin(false);
|
||||
|
||||
var code = ace.edit("code-editor");
|
||||
code.setShowPrintMargin(false);
|
||||
|
||||
var codeAst = ace.edit("code-ast");
|
||||
codeAst.setShowPrintMargin(false);
|
||||
codeAst.setOptions({
|
||||
readOnly: true,
|
||||
highlightActiveLine: false,
|
||||
highlightGutterLine: false
|
||||
})
|
||||
codeAst.renderer.$cursorLayer.element.style.opacity=0;
|
||||
|
||||
var codeAstOptimized = ace.edit("code-ast-optimized");
|
||||
codeAstOptimized.setShowPrintMargin(false);
|
||||
codeAstOptimized.setOptions({
|
||||
readOnly: true,
|
||||
highlightActiveLine: false,
|
||||
highlightGutterLine: false
|
||||
})
|
||||
codeAstOptimized.renderer.$cursorLayer.element.style.opacity=0;
|
||||
|
||||
var generateErrorListHTML = function (errors) {
|
||||
var html = '<ul>';
|
||||
|
||||
html += $.map(errors, function (x) {
|
||||
return '<li data-ln="' + x.ln + '" data-col="' + x.col + '"><span>' + x.ln + ':' + x.col + '</span> <span>' + x.msg + '</span></li>';
|
||||
}).join('');
|
||||
|
||||
html += '<ul>';
|
||||
|
||||
return html;
|
||||
};
|
||||
|
||||
var parse = function () {
|
||||
var $grammarValidation = $('#grammar-validation');
|
||||
var $grammarInfo = $('#grammar-info');
|
||||
var grammarText = grammar.getValue();
|
||||
|
||||
var $codeValidation = $('#code-validation');
|
||||
var $codeInfo = $('#code-info');
|
||||
var codeText = code.getValue();
|
||||
|
||||
$.post("/parse", {
|
||||
grammar: grammarText,
|
||||
code: codeText
|
||||
}).done(function (data) {
|
||||
var isValid = data.grammar.length === 0;
|
||||
if (isValid) {
|
||||
$grammarInfo.html('');
|
||||
$grammarValidation.removeClass('editor-validation-invalid').text('Valid');
|
||||
|
||||
codeAst.setValue('');
|
||||
codeAstOptimized.setValue('');
|
||||
|
||||
var isValid = data.code.length === 0;
|
||||
if (isValid) {
|
||||
$codeInfo.html('');
|
||||
$codeValidation.removeClass('editor-validation-invalid').text('Valid');
|
||||
codeAst.insert(data.ast);
|
||||
codeAstOptimized.insert(data.astOptimized);
|
||||
} else {
|
||||
var html = generateErrorListHTML(data.code);
|
||||
$codeInfo.html(html);
|
||||
$codeValidation.addClass('editor-validation-invalid').text('Invalid');
|
||||
}
|
||||
$codeValidation.show();
|
||||
} else {
|
||||
var html = generateErrorListHTML(data.grammar);
|
||||
$grammarInfo.html(html);
|
||||
$grammarValidation.addClass('editor-validation-invalid').text('Invalid');
|
||||
|
||||
$codeValidation.hide();
|
||||
}
|
||||
});
|
||||
};
|
||||
|
||||
// Event handing for text editiing
|
||||
var timer;
|
||||
var setupTimer = function () {
|
||||
clearTimeout(timer);
|
||||
timer = setTimeout(parse, 750);
|
||||
};
|
||||
grammar.getSession().on('change', setupTimer);
|
||||
code.getSession().on('change', setupTimer);
|
||||
|
||||
// Event handing in the info area
|
||||
var makeOnClickInInfo = function (editor) {
|
||||
return function () {
|
||||
var el = $(this);
|
||||
editor.navigateTo(el.data('ln') - 1, el.data('col') - 1);
|
||||
editor.focus();
|
||||
}
|
||||
};
|
||||
$('#grammar-info').on('click', 'li', makeOnClickInInfo(grammar));
|
||||
$('#code-info').on('click', 'li', makeOnClickInInfo(code));
|
||||
|
||||
// Show page
|
||||
$('#main').css({
|
||||
'display': 'flex',
|
||||
'display': '-webkit-flex'
|
||||
});
|
||||
|
||||
// Initial parse
|
||||
parse();
|
||||
</script>
|
||||
</body>
|
||||
</html>
|
||||
)";
|
||||
|
||||
function<void (size_t, size_t, const string&)> makeJSONFormatter(string& json)
|
||||
{
|
||||
auto init = make_shared<bool>(true);
|
||||
|
||||
return [&json, init](size_t ln, size_t col, const string& msg) mutable {
|
||||
if (!init) {
|
||||
json += ",";
|
||||
}
|
||||
json += "{";
|
||||
json += R"("ln":)" + to_string(ln) + ",";
|
||||
json += R"("col":)" + to_string(col) + ",";
|
||||
json += R"("msg":")" + msg + R"(")";
|
||||
json += "}";
|
||||
*init = false;
|
||||
};
|
||||
}
|
||||
|
||||
bool parse_grammar(const string& text, peg::parser& peg, string& json)
|
||||
{
|
||||
peg.log = makeJSONFormatter(json);
|
||||
json += "[";
|
||||
auto ret = peg.load_grammar(text.data(), text.size());
|
||||
json += "]";
|
||||
return ret;
|
||||
}
|
||||
|
||||
bool parse_code(const string& text, peg::parser& peg, string& json, shared_ptr<peg::Ast>& ast)
|
||||
{
|
||||
peg.enable_ast();
|
||||
peg.log = makeJSONFormatter(json);
|
||||
json += "[";
|
||||
auto ret = peg.parse_n(text.data(), text.size(), ast);
|
||||
json += "]";
|
||||
return ret;
|
||||
}
|
||||
|
||||
template <typename T>
|
||||
void dump_ast(const shared_ptr<T>& ptr, string& json, int level = 0)
|
||||
{
|
||||
const auto& ast = *ptr;
|
||||
for (auto i = 0; i < level; i++) {
|
||||
json += " ";
|
||||
}
|
||||
string name;
|
||||
if (ast.name == ast.original_name) {
|
||||
name = ast.name;
|
||||
} else {
|
||||
name = ast.original_name + " (" + ast.name + ")";
|
||||
}
|
||||
if (ast.is_token) {
|
||||
json += "- " + name + "(" + ast.token + ")\\n";
|
||||
} else {
|
||||
json += "+ " + name +"\\n";
|
||||
}
|
||||
for (auto node : ast.nodes) {
|
||||
dump_ast(node, json, level + 1);
|
||||
}
|
||||
}
|
||||
|
||||
std::string replace_text(std::string &s, const std::string &toReplace, const std::string &replaceWith)
|
||||
{
|
||||
return(s.replace(s.find(toReplace), toReplace.length(), replaceWith));
|
||||
}
|
||||
|
||||
int run_server(int port, const vector<char>& syntax, const vector<char>& source)
|
||||
{
|
||||
Server svr;
|
||||
|
||||
svr.get("/", [&](const Request& req, Response& res) {
|
||||
replace_text(indexHTML, "{{syntax}}", string(syntax.data(), syntax.size()));
|
||||
replace_text(indexHTML, "{{source}}", string(source.data(), source.size()));
|
||||
|
||||
res.set_content(indexHTML, "text/html");
|
||||
});
|
||||
|
||||
svr.post("/parse", [](const Request& req, Response& res) {
|
||||
const auto& grammarText = req.params.at("grammar");
|
||||
|
||||
string grammarResult;
|
||||
string codeResult;
|
||||
string astResult;
|
||||
string astResultOptimized;
|
||||
|
||||
peg::parser peg;
|
||||
auto ret = parse_grammar(grammarText, peg, grammarResult);
|
||||
|
||||
if (ret && peg) {
|
||||
const auto& codeText = req.params.at("code");
|
||||
shared_ptr<peg::Ast> ast;
|
||||
if (parse_code(codeText, peg, codeResult, ast)) {
|
||||
dump_ast(ast, astResult);
|
||||
dump_ast(peg::AstOptimizer(true).optimize(ast), astResultOptimized);
|
||||
}
|
||||
}
|
||||
|
||||
string json;
|
||||
json += "{";
|
||||
json += "\"grammar\":" + grammarResult;
|
||||
if (!codeResult.empty()) {
|
||||
json += ",\"code\":" + codeResult;
|
||||
json += ",\"ast\":\"" + astResult + "\"";
|
||||
json += ",\"astOptimized\":\"" + astResultOptimized + "\"";
|
||||
}
|
||||
json += "}";
|
||||
|
||||
res.set_content(json, "application/json");
|
||||
});
|
||||
|
||||
svr.set_error_handler([](const Request& req, Response& res) {
|
||||
const char* fmt = "<p>Error Status: <span style='color:red;'>%d</span></p>";
|
||||
char buf[BUFSIZ];
|
||||
snprintf(buf, sizeof(buf), fmt, res.status);
|
||||
res.set_content(buf, "text/html");
|
||||
});
|
||||
|
||||
cerr << "Server running at http://localhost:" << port << "/" << endl;
|
||||
svr.listen("localhost", port);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
// vim: et ts=4 sw=4 cin cino={1s ff=unix
|
||||
Loading…
Reference in New Issue
Block a user