mirror of https://gitlab.com/rnger/amath
140 lines
3.4 KiB
C++
140 lines
3.4 KiB
C++
/*-
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* Copyright (c) 2014-2017 Carsten Sonne Larsen <cs@innolan.net>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Project homepage:
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* http://amath.innolan.net
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*
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*/
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#include "amath.h"
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#include "amathc.h"
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#include "console.h"
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#include "console_termios.h"
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#include "lib/charval.h"
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#include "lib/aengine.h"
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#include "main/evaluator.h"
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#if defined(TERMIOS)
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#include <stdio.h>
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#include <termios.h>
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TermiosConsole::TermiosConsole(const char* prompt, CharValidator* validator) :
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ConsoleBase(prompt), line(nullptr), exit(false)
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{
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proc = new AnsiConoleEngine(prompt, validator);
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}
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TermiosConsole::~TermiosConsole()
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{
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delete proc;
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}
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bool TermiosConsole::Open()
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{
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if (tcgetattr(STDIN_FILENO, &oldAttr) != 0)
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{
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termError = true;
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return false;
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}
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newAttr = oldAttr;
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newAttr.c_lflag &=(~ICANON & ~ECHO);
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newAttr.c_cc[VMIN] = 1;
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newAttr.c_cc[VTIME] = 0;
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return (tcsetattr(STDIN_FILENO, TCSANOW, &newAttr) != -1);
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}
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void TermiosConsole::Close()
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{
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if (!termError)
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{
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tcsetattr(STDIN_FILENO, TCSANOW, &oldAttr);
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}
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}
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void TermiosConsole::Start()
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{
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exit = false;
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StartMessage();
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while (!exit)
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{
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Prompt();
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ReadLine();
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Evaluator* evaluator = new Evaluator(line);
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evaluator->Evaluate();
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const char* res = evaluator->GetResult();
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Write(res, StrLen(res));
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delete evaluator;
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}
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}
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void TermiosConsole::Exit()
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{
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exit = true;
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}
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void TermiosConsole::ReadLine()
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{
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char c;
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proc->StartInput();
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while (!proc->InputDone())
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{
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ssize_t res = read(STDIN_FILENO, &c, sizeof(char));
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if (res != 1)
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{
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break;
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}
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const char* out = proc->ProcessChar(c);
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WriteString(out);
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ResetConsole();
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}
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line = proc->GetLine();
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}
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void TermiosConsole::WriteString(const char* string)
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{
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Write(string, StrLen(string));
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}
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void TermiosConsole::Write(const char* string, unsigned int length)
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{
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ssize_t res = write(STDOUT_FILENO, string, length);
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if (res != length)
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{
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exit = true;
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}
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}
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void TermiosConsole::SetPrompt(const char* string)
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{
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ConsoleBase::SetPrompt(string);
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proc->SetPrompt(string);
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}
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#endif
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