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#include "line/mode.h"
#include <unistd.h>
#include <stdlib.h>
#include <iostream>
#include <print>
#include "line/cursor.h"
#include "line/getter.h"
#include "history.h"
using namespace std;
namespace ov4
{
void disable_raw()
{
raw_enabled = false;
tcsetattr(STDIN_FILENO, TCSAFLUSH, &attr);
}
void enable_raw()
{
if (raw_enabled) return;
raw_enabled = true;
termios attr_raw;
tcgetattr(STDIN_FILENO, &attr);
tcgetattr(STDIN_FILENO, &attr_raw);
// LOCAL
// disable
// echo
// canonical
// signal
// disable post-input processing, aka control-V
attr_raw.c_lflag &= ~(ECHO | ICANON | ISIG | IEXTEN);
// INPUT
// disable
// software flow control, aka control-S/Q
// \n and \r conversion
attr_raw.c_iflag &= ~(IXON | ICRNL);
// OUTPUT
// disable
// post-output processing
attr_raw.c_oflag &= ~(OPOST);
// misc
attr_raw.c_iflag &= ~(BRKINT | INPCK | ISTRIP);
attr_raw.c_cflag |= (CS8);
atexit(disable_raw);
// TCSAFLUSH
// the change shall occur after all output written to fildes is transmitted
// and all input so far received but not read shall be discarded before the change is made
tcsetattr(STDIN_FILENO, TCSAFLUSH, &attr_raw);
}
void clear_below()
{
print("\x1b[0J");
}
string readline()
{
update_window_size();
history_vec.push_back("");
history_index = get_last_index();
reset_editor();
T_position pos = get_cursor_position();
prompt_pos = pos.col;
char c;
while (read(STDIN_FILENO, &c, 1) == 1)
{
if (iscntrl(c))
{
//print("control: {}\r\n", static_cast<unsigned char>(c));
//fflush(stdout);
if (c == 0x0A || c == 0x0D) // \n OR \r
{
//print("line: {}\r\n", line_buffer);
if (line_buffer.empty())
{
history_index--;
history_vec.pop_back();
}
else
{
history_vec[get_last_index()] = line_buffer;
}
return line_buffer;
}
else if (c == 0x03) // control C
{
history_index--;
history_vec.pop_back();
return "";
}
// ESC sequence
else if (c == '\x1b')
{
char seq[10];
// eat [
if (read(STDIN_FILENO, seq + 0, 1) != 1)
continue;
if (read(STDIN_FILENO, seq + 1, 1) != 1)
continue;
move_cursor(seq[1]);
}
}
// normal char
else
{
cursor_input_char(c);
print_override(line_buffer);
}
}
if (line_buffer.empty())
{
history_index--;
history_vec.pop_back();
}
else
{
history_vec[get_last_index()] = line_buffer;
}
return line_buffer;
}
void editor_exit(int code)
{
disable_raw();
exit(code);
}
}
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