1 ////////////////////////////////////////////////////////////////////////////////
3 // Copyright 2006 - 2017, Paul Beckingham, Federico Hernandez.
5 // Permission is hereby granted, free of charge, to any person obtaining a copy
6 // of this software and associated documentation files (the "Software"), to deal
7 // in the Software without restriction, including without limitation the rights
8 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
9 // copies of the Software, and to permit persons to whom the Software is
10 // furnished to do so, subject to the following conditions:
12 // The above copyright notice and this permission notice shall be included
13 // in all copies or substantial portions of the Software.
15 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
16 // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 // THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
23 // http://www.opensource.org/licenses/mit-license.php
25 ////////////////////////////////////////////////////////////////////////////////
38 #include <readline/readline.h>
39 #include <readline/history.h>
42 // TODO These conflict with tw commands. This needs to be resolved.
43 // Perhaps an escape, such as '-- help' could invoke local help, or using
44 // a 'task' prefix could disambiguate.
48 int cmdDiagnostics ();
49 int cmdReview (const std::vector <std::string>&, bool);
50 int cmdShell (const std::vector <std::string>&);
51 std::string promptCompose ();
52 std::string findTaskwarrior ();
54 ////////////////////////////////////////////////////////////////////////////////
55 static void welcome ()
57 std::cout << PACKAGE_STRING << "\n";
61 ////////////////////////////////////////////////////////////////////////////////
62 const std::string getResponse (const std::string& prompt)
64 std::string response {""};
66 // Display prompt, get input.
68 char *line_read = readline (prompt.c_str ());
78 add_history (line_read);
80 response = std::string (line_read);
85 std::getline (std::cin, response);
86 if (std::cin.eof () == 1)
96 ////////////////////////////////////////////////////////////////////////////////
97 static int commandLoop (bool autoClear)
99 // Compose the prompt.
100 auto prompt = promptCompose ();
102 // Display prompt, get input.
103 auto command = getResponse (prompt);
105 // Obey Taskwarrior's rc.tasksh.autoclear.
107 std::cout << "\033[2J\033[0;0H";
110 if (! isatty (fileno (stdin)) && command == "")
114 else if (command != "")
116 auto args = split (command, ' ');
119 if (args[0] == "<EOF>") status = -1;
120 else if (closeEnough ("exit", args[0], 3)) status = -1;
121 else if (closeEnough ("quit", args[0], 3)) status = -1;
122 else if (closeEnough ("help", args[0], 3)) status = cmdHelp ();
123 else if (closeEnough ("diagnostics", args[0], 3)) status = cmdDiagnostics ();
124 else if (closeEnough ("review", args[0], 3)) status = cmdReview (args, autoClear);
125 else if (closeEnough ("exec", args[0], 3) ||
126 args[0][0] == '!') status = cmdShell (args);
127 else if (command != "")
129 command = "task " + command;
130 std::cout << "[" << command << "]\n";
131 system (command.c_str ());
133 // Deliberately ignoreѕ taskwarrior exit status, otherwise empty filters
134 // cause the shell to terminate.
141 ////////////////////////////////////////////////////////////////////////////////
142 int main (int argc, const char** argv)
146 // Lightweight version checking that doesn't require initialization or any I/O.
147 if (argc == 2 && !strcmp (argv[1], "--version"))
149 std::cout << VERSION << "\n";
155 // Get the Taskwarrior rc.tasksh.autoclear Boolean setting.
156 bool autoClear = false;
159 execute ("task", {"_get", "rc.tasksh.autoclear"}, input, output);
160 output = lowerCase (output);
161 autoClear = (output == "true\n" ||
167 if (isatty (fileno (stdin)))
170 while ((status = commandLoop (autoClear)) == 0)
174 catch (const std::string& error)
176 std::cerr << error << "\n";
182 std::cerr << "Unknown error." << "\n";
187 // Returning -1 drops out of the command loop, but gets translated to 0 here,
188 // so that there is a clean way to exit.
189 return status == -1 ? 0 : status;
192 ////////////////////////////////////////////////////////////////////////////////