103 lines
2.4 KiB
C++
103 lines
2.4 KiB
C++
#include "fs/devices/ConsoleDevice.h"
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#include "arch/Keyboard.h"
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#include "memory/MemoryManager.h"
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#include "video/TextConsole.h"
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#include <bits/termios.h>
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#include <luna/Buffer.h>
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#include <luna/CString.h>
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#include <luna/Vector.h>
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static Buffer g_console_input;
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static bool g_eof { false };
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static bool g_echo { true };
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Result<SharedPtr<Device>> ConsoleDevice::create()
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{
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return (SharedPtr<Device>)TRY(make_shared<ConsoleDevice>());
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}
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Result<usize> ConsoleDevice::read(u8* buf, usize, usize length) const
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{
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if (length > g_console_input.size()) length = g_console_input.size();
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memcpy(buf, g_console_input.data(), length);
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memmove(g_console_input.data(), g_console_input.data() + length, g_console_input.size() - length);
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g_console_input.try_resize(g_console_input.size() - length).release_value();
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if (!length && g_eof) g_eof = false;
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return length;
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}
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Result<usize> ConsoleDevice::write(const u8* buf, usize, usize length)
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{
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TextConsole::write((const char*)buf, length);
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return length;
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}
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bool ConsoleDevice::blocking() const
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{
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return g_eof ? false : g_console_input.size() == 0;
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}
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static Vector<u8> g_temp_input;
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void ConsoleDevice::did_press_key(char key)
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{
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if (key == '\b')
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{
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if (g_temp_input.try_pop().has_value())
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{
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if (g_echo) TextConsole::putwchar(L'\b');
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}
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return;
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}
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// Ctrl+D
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if (key == 'd' && (Keyboard::modifiers() & Keyboard::LeftControl))
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{
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if (g_temp_input.size() == 0) g_eof = true;
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return;
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}
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g_temp_input.try_append((u8)key).value();
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if (key == '\n')
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{
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g_console_input.append_data(g_temp_input.data(), g_temp_input.size()).value();
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g_temp_input.clear();
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}
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if (!g_echo) return;
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TextConsole::putchar(key);
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}
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Result<u64> ConsoleDevice::ioctl(int request, void* arg)
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{
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switch (request)
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{
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case TCGETS: {
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struct termios tc
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{
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.c_lflag = 0
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};
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if (g_echo) tc.c_lflag |= ECHO;
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return MemoryManager::copy_to_user_typed((struct termios*)arg, &tc) ? 0 : err(EFAULT);
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}
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case TCSETS: {
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struct termios tc;
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if (!MemoryManager::copy_from_user_typed((const struct termios*)arg, &tc)) return err(EFAULT);
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if (tc.c_lflag & ECHO) g_echo = true;
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else
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g_echo = false;
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return 0;
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}
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default: return err(EINVAL);
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}
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}
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