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#include "line/line_editor.h"
#include <print>
#include <string>
#include <unistd.h>
#include "history.h"
#include "util/non_block_input.h"
#include "pipe.h"
#include "signal_handler.h"
using namespace std;
namespace ov4
{
void T_line_editor::clear_below()
{
print("\x1b[0J");
}
string T_line_editor::readline(int prompt_len)
{
prompt_pos = prompt_len+1;
update_window_size();
history_vec.push_back("");
history_index = get_last_index();
reset_editor();
char c; int src;
while (non_block_read_char(&c, &src) == 1)
{
// if signal'd
if (src == self_pipe_fd[0])
{
check_window_update();
process_signal();
continue;
}
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]);
}
// backspace
else if (c == '\b' || c == '\x7f')
{
cursor_input_char(c);
print_override(line_buffer);
}
}
// 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;
}
}
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