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Jan Kundrátdc2b0722018-03-02 14:13:37 +01001/*
2 * Copyright (C) 2018 CESNET, https://photonics.cesnet.cz/
Jan Kundráta2740442018-03-22 16:56:43 +01003 * Copyright (C) 2018 FIT CVUT, https://fit.cvut.cz/
Jan Kundrátdc2b0722018-03-02 14:13:37 +01004 *
Václav Kubernát624a8872018-03-02 17:28:47 +01005 * Written by Václav Kubernát <kubervac@fit.cvut.cz>
Jan Kundrátdc2b0722018-03-02 14:13:37 +01006 *
7*/
Jan Kundrátdc2b0722018-03-02 14:13:37 +01008#include <docopt.h>
Václav Kubernát624a8872018-03-02 17:28:47 +01009#include <iostream>
Václav Kubernát435706e2019-02-20 18:05:59 +010010#include <optional>
Václav Kubernáta395d332019-02-13 16:49:20 +010011#include <replxx.hxx>
Václav Kubernát90de9502019-11-20 17:19:44 +010012#include <sstream>
Jan Kundrátdc2b0722018-03-02 14:13:37 +010013#include "NETCONF_CLI_VERSION.h"
Václav Kubernát96344a12018-05-28 16:33:39 +020014#include "interpreter.hpp"
Václav Kubernát6415b822018-08-22 17:40:01 +020015#include "sysrepo_access.hpp"
Jan Kundrátdc2b0722018-03-02 14:13:37 +010016
Václav Kubernát435706e2019-02-20 18:05:59 +010017const auto HISTORY_FILE_NAME = "netconf-cli_history";
Václav Kubernát624a8872018-03-02 17:28:47 +010018
Jan Kundrátdc2b0722018-03-02 14:13:37 +010019static const char usage[] =
Václav Kubernát624a8872018-03-02 17:28:47 +010020 R"(CLI interface to remote NETCONF hosts
Jan Kundrátdc2b0722018-03-02 14:13:37 +010021
22Usage:
Václav Kubernáta6c5fff2018-09-07 15:16:25 +020023 netconf-cli
Jan Kundrátdc2b0722018-03-02 14:13:37 +010024 netconf-cli (-h | --help)
25 netconf-cli --version
26)";
27
Václav Kubernát624a8872018-03-02 17:28:47 +010028
Jan Kundrátdc2b0722018-03-02 14:13:37 +010029int main(int argc, char* argv[])
30{
31 auto args = docopt::docopt(usage,
32 {argv + 1, argv + argc},
33 true,
34 "netconf-cli " NETCONF_CLI_VERSION,
35 true);
Václav Kubernát624a8872018-03-02 17:28:47 +010036 std::cout << "Welcome to netconf-cli" << std::endl;
Václav Kubernátff2c9f62018-05-16 20:26:31 +020037
Václav Kubernát6415b822018-08-22 17:40:01 +020038 SysrepoAccess datastore("netconf-cli");
Václav Kubernát43908fb2020-01-02 19:05:51 +010039 auto dataQuery = std::make_shared<DataQuery>(datastore);
40 Parser parser(datastore.schema(), dataQuery);
Václav Kubernát395d92c2020-01-24 12:18:18 +010041
42 using replxx::Replxx;
43
44 Replxx lineEditor;
45
46 lineEditor.bind_key(Replxx::KEY::meta(Replxx::KEY::BACKSPACE), std::bind(&Replxx::invoke, &lineEditor, Replxx::ACTION::KILL_TO_BEGINING_OF_WORD, std::placeholders::_1));
47 lineEditor.bind_key(Replxx::KEY::control('W'), std::bind(&Replxx::invoke, &lineEditor, Replxx::ACTION::KILL_TO_WHITESPACE_ON_LEFT, std::placeholders::_1));
48
49 lineEditor.set_word_break_characters("\t _[]/:'\"=-%");
50
Václav Kubernát1ed4aa32020-01-23 13:13:28 +010051 lineEditor.set_completion_callback([&parser](const std::string& input, int& context) {
Václav Kubernáta395d332019-02-13 16:49:20 +010052 std::stringstream stream;
Václav Kubernát1ed4aa32020-01-23 13:13:28 +010053 auto completions = parser.completeCommand(input, stream);
Václav Kubernáta395d332019-02-13 16:49:20 +010054
Jan Kundrát8d8efe82019-10-18 10:21:36 +020055 std::vector<replxx::Replxx::Completion> res;
Václav Kubernát1ed4aa32020-01-23 13:13:28 +010056 std::copy(completions.m_completions.begin(), completions.m_completions.end(), std::back_inserter(res));
57 context = completions.m_contextLength;
Václav Kubernáta395d332019-02-13 16:49:20 +010058 return res;
59 });
Václav Kubernát2b684612018-08-09 18:55:24 +020060
Václav Kubernát435706e2019-02-20 18:05:59 +010061 std::optional<std::string> historyFile;
62 if (auto xdgHome = getenv("XDG_DATA_HOME")) {
63 historyFile = std::string(xdgHome) + "/" + HISTORY_FILE_NAME;
64 } else if (auto home = getenv("HOME")) {
65 historyFile = std::string(home) + "/.local/share/" + HISTORY_FILE_NAME;
66 }
67
68 if (historyFile)
69 lineEditor.history_load(historyFile.value());
70
Václav Kubernátff2c9f62018-05-16 20:26:31 +020071 while (true) {
Václav Kubernáta395d332019-02-13 16:49:20 +010072 auto line = lineEditor.input(parser.currentNode() + "> ");
73 if (!line) {
Václav Kubernát82bf1312019-11-05 11:19:26 +010074 // If user pressed CTRL-C to abort the line, errno gets set to EAGAIN.
75 // If user pressed CTRL-D (for EOF), errno doesn't get set to EAGAIN, so we exit the program.
76 // I have no idea why replxx uses errno for this.
77 if (errno == EAGAIN) {
78 continue;
79 } else {
80 break;
81 }
Václav Kubernát5b80e522019-01-25 12:17:03 +010082 }
Václav Kubernátff2c9f62018-05-16 20:26:31 +020083
Jan Kundráte3877022018-09-05 15:32:09 +020084 std::locale C_locale("C");
Václav Kubernáta395d332019-02-13 16:49:20 +010085 std::string_view view{line};
86 if (std::all_of(view.begin(), view.end(),
Jan Kundráte3877022018-09-05 15:32:09 +020087 [C_locale](const auto c) { return std::isspace(c, C_locale);})) {
88 continue;
89 }
90
Václav Kubernátff2c9f62018-05-16 20:26:31 +020091 try {
Václav Kubernát5b80e522019-01-25 12:17:03 +010092 command_ cmd = parser.parseCommand(line, std::cout);
Václav Kubernát6415b822018-08-22 17:40:01 +020093 boost::apply_visitor(Interpreter(parser, datastore), cmd);
Václav Kubernátff2c9f62018-05-16 20:26:31 +020094 } catch (InvalidCommandException& ex) {
95 std::cerr << ex.what() << std::endl;
Václav Kubernátc58e4aa2019-04-03 18:37:32 +020096 } catch (DatastoreException& ex) {
97 std::cerr << ex.what() << std::endl;
Václav Kubernátff2c9f62018-05-16 20:26:31 +020098 }
Václav Kubernát5b80e522019-01-25 12:17:03 +010099
Václav Kubernáta395d332019-02-13 16:49:20 +0100100 lineEditor.history_add(line);
Václav Kubernátff2c9f62018-05-16 20:26:31 +0200101 }
102
Václav Kubernát435706e2019-02-20 18:05:59 +0100103 if (historyFile)
104 lineEditor.history_save(historyFile.value());
105
Jan Kundrátdc2b0722018-03-02 14:13:37 +0100106 return 0;
107}