428 lines
9.9 KiB
C++
428 lines
9.9 KiB
C++
#include "filecomplete.h"
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#include <string>
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#include <vector>
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#ifdef _MSC_VER
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#ifndef _CRT_SECURE_NO_WARNINGS
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#define _CRT_SECURE_NO_WARNINGS
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#endif
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#define MAX_OF(x, y) (((x) > (y)) ? (x) : (y))
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#if defined(_WIN32) || defined(__CYGWIN__) || defined(_WIN64)
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#ifndef OS_WINDOWS
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#define OS_WINDOWS
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#include <conio.h>
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#include <stdint.h>
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#include <windows.h>
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#endif
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#elif defined(__APPLE__) || defined(__unix__) || defined(__unix) || \
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defined(unix) || defined(__linux__)
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#ifndef OS_UNIX
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#define OS_UNIX
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#include <sys/ioctl.h>
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#include <termios.h>
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#include <unistd.h>
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#endif
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#else
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#error Unknown environment!
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#endif
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#if defined(OS_WINDOWS)
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#define ENTER 13
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#define BACKSPACE 8
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#define LEFT 75
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#define RIGHT 77
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#define UP 72
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#define DOWN 80
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#define DEL 83
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#define CTRL_C 3
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#define SPECIAL_SEQ_1 0
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#define SPECIAL_SEQ_2 224
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#define COLOR_TYPE uint16_t
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#define DEFAULT_TITLE_COLOR 160
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#define DEFAULT_PREDICT_COLOR 8
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#define DEFAULT_MAIN_COLOR 7
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#elif defined(OS_UNIX)
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#define ENTER 10
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#define BACKSPACE 127
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#define LEFT 68
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#define RIGHT 67
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#define UP 65
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#define DOWN 66
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#define DEL 51
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#define DEL_AFTER 126
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#define SPECIAL_SEQ_1 27
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#define SPECIAL_SEQ_2 91
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#define COLOR_TYPE char*
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#define DEFAULT_TITLE_COLOR "0;30;102"
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#define DEFAULT_PREDICT_COLOR "90"
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#define DEFAULT_MAIN_COLOR "0"
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#endif
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#define SPACE 32
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#define TAB 9
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constexpr int buf_size = 1024 * 100;
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static std::vector<std::vector<char>> buf{};
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static std::vector<char> word{};
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static size_t wo{};
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static size_t len{};
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static short cy{};
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static short cx{};
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void clear_line();
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void set_cursor_x(short x);
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short get_cursor_y();
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char* fc_readline();
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void color_print(char* text, COLOR_TYPE color);
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std::pair<short, short> get_wh()
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{
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HANDLE h_console = GetStdHandle(STD_OUTPUT_HANDLE);
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if (h_console == NULL) {
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fprintf(stderr, "[ERROR] Couldn't handle terminal\n");
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exit(1);
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}
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CONSOLE_SCREEN_BUFFER_INFO console_info;
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if (GetConsoleScreenBufferInfo(h_console, &console_info) == 0) {
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fprintf(stderr, "[ERROR] Couldn't get terminal info\n");
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exit(1);
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}
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int cw = console_info.srWindow.Right - console_info.srWindow.Left + 1;
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int ch = console_info.srWindow.Bottom - console_info.srWindow.Top + 1;
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auto w = static_cast<short>(cw);
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auto h = static_cast<short>(ch);
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return std::make_pair(w, h);
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}
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void supply(std::vector<char>& wch, char ch)
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{
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wch.push_back(ch);
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if (ch >= 0 && ch < 128) {
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return;
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}
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auto tch = _getch();
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wch.push_back(tch);
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}
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void clear_line()
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{
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#if defined(OS_WINDOWS)
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// Get current terminal width
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short width = get_wh().first;
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if (width < 1) {
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fprintf(stderr, "[ERROR] Size of terminal is too small\n");
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exit(1);
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}
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// Create long empty string
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char* empty = (char*)malloc(sizeof(char) * width);
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if (empty) {
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memset(empty, ' ', width);
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empty[width - 1] = '\0';
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}
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HANDLE hConsole = GetStdHandle(STD_OUTPUT_HANDLE);
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CONSOLE_CURSOR_INFO cursorInfo;
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GetConsoleCursorInfo(hConsole, &cursorInfo);
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cursorInfo.bVisible = FALSE;
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SetConsoleCursorInfo(hConsole, &cursorInfo);
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// Clear line
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printf("\r%s\r", empty);
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// Free line
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free(empty);
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#elif defined(OS_UNIX)
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printf("\033[2K\r");
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#endif
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}
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void set_cursor_x(short x)
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{
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#if defined(OS_WINDOWS)
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HANDLE h_console = GetStdHandle(STD_OUTPUT_HANDLE);
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if (h_console == NULL) {
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fprintf(stderr, "[ERROR] Couldn't handle terminal\n");
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exit(1);
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}
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auto wh = get_wh();
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// Create position
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COORD xy;
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xy.Y = get_cursor_y();
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short px = x % wh.first - 1;
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xy.X = px < 0 ? 0 : px;
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// Set cursor position
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if (SetConsoleCursorPosition(h_console, xy) == 0) {
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auto code = GetLastError();
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fprintf(stderr,
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"[ERROR] Couldn't set terminal cursor position, err=%lu\n",
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code);
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exit(1);
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}
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#elif defined(OS_UNIX)
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printf("\033[%d;%dH", get_cursor_y(), x);
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#endif
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}
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short get_cursor_y()
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{
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#if defined(OS_WINDOWS)
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HANDLE h_console = GetStdHandle(STD_OUTPUT_HANDLE);
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if (h_console == NULL) {
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fprintf(stderr, "[ERROR] Couldn't handle terminal\n");
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exit(1);
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}
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// Get terminal info
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CONSOLE_SCREEN_BUFFER_INFO console_info;
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if (GetConsoleScreenBufferInfo(h_console, &console_info) == 0) {
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fprintf(stderr, "[ERROR] Couldn't get terminal Y position\n");
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exit(1);
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}
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// Return Y position
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return console_info.dwCursorPosition.Y;
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#elif defined(OS_UNIX)
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struct termios old_attr, new_attr;
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char ch, buf[30] = {0};
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int i = 0, pow = 1, y = 0;
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// Backup terminal attributes
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if (tcgetattr(STDIN_FILENO, &new_attr) == -1) {
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fprintf(stderr, "[ERROR] Couldn't get terminal attributes\n");
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exit(1);
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}
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// Disable echo
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old_attr = new_attr;
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old_attr.c_lflag &= ~(ICANON | ECHO);
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if (tcsetattr(STDIN_FILENO, TCSANOW, &old_attr) == -1) {
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fprintf(stderr, "[ERROR] Couldn't set terminal attributes\n");
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exit(1);
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}
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// Get info about cursor
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if (write(STDOUT_FILENO, "\033[6n", 4) != 4) {
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fprintf(stderr, "[ERROR] Couldn't get cursor information\n");
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exit(1);
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}
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// Get ^[[{this};1R value
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for (ch = 0; ch != 'R'; i++) {
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if (read(STDIN_FILENO, &ch, 1) != 1) {
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fprintf(stderr, "[ERROR] Couldn't read cursor information");
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exit(1);
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}
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buf[i] = ch;
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}
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i -= 2;
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while (buf[i] != ';') {
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i -= 1;
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}
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i -= 1;
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while (buf[i] != '[') {
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y = y + (buf[i] - '0') * pow;
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pow *= 10;
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i -= 1;
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}
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// Reset attributes
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if (tcsetattr(0, TCSANOW, &new_attr) == -1) {
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fprintf(stderr, "[ERROR] Couldn't reset terminal attributes\n");
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exit(1);
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}
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return (short)y;
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#endif
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}
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char* fc_readline()
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{
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char* buffer = (char*)calloc((size_t)buf_size, sizeof(char));
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if (buffer == NULL) {
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fprintf(stderr, "[ERROR] Couldn't allocate memory for buffer\n");
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exit(1);
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}
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// Current hint number
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int hint_num = 0;
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while (1) {
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word.clear();
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clear_line();
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// Print current buffer
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color_print(buffer, DEFAULT_MAIN_COLOR);
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// Move cursor
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int cur_pos{};
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for (int i = 0; i < buf.size() && i < wo; ++i) {
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cur_pos += static_cast<int>(buf[i].size());
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}
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set_cursor_x(cur_pos + 1);
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// Read character from console
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int ch = _getch();
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switch (ch) {
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case ENTER:
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return nullptr;
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#if defined(OS_WINDWS)
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case CTRL_C: {
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exit(0);
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}
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#endif
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case BACKSPACE: {
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if (wo > 0) {
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for (size_t i = wo - 1; i < buf.size() - 1; ++i) {
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buf[i] = buf[i + 1];
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}
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--wo;
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--len;
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}
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break;
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}
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case TAB: {
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break;
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}
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#if defined(OS_WINDOWS)
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case SPECIAL_SEQ_1:
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case SPECIAL_SEQ_2:
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#elif defined(OS_UNIX)
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case SPECIAL_SEQ_1:
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#endif
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{
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#if defined(OS_UNIX)
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if (_getch() != SPECIAL_SEQ_2) {
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continue;
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}
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#endif
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switch (_getch()) {
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case LEFT:
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wo = wo < 1 ? 0 : (--wo);
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break;
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case RIGHT:
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wo = wo >= len ? len : (++wo);
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break;
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case UP:
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break;
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case DOWN:
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break;
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case DEL:
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// Edit buffer like DELETE key
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#if defined(OS_UNIX)
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if (_getch() == DEL_AFTER)
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#endif
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{
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}
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break;
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default:
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break;
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}
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break;
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}
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default: {
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supply(word, ch);
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if (wo < buf.size()) {
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if (len >= buf.size()) {
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buf.resize(buf.size() * 2);
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}
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if (len > 0) {
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for (size_t i = len - 1; i >= wo; --i) {
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buf[i + 1] = buf[i];
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}
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buf[wo] = word;
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}
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} else {
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buf.push_back(word);
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}
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++wo;
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++len;
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break;
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}
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}
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}
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return buffer;
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}
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void fc_free(char* str)
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{
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free(str);
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}
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void color_print(char* text, COLOR_TYPE color)
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{
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#if defined(OS_WINDOWS)
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HANDLE h_console = GetStdHandle(STD_OUTPUT_HANDLE);
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if (h_console == NULL) {
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fprintf(stderr, "[ERROR] Couldn't handle terminal\n");
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exit(1);
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}
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CONSOLE_SCREEN_BUFFER_INFO console_info;
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COLOR_TYPE backup;
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// Save current attributes
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if (GetConsoleScreenBufferInfo(h_console, &console_info) == 0) {
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fprintf(stderr, "[ERROR] Couldn't get terminal info\n");
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exit(1);
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}
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auto wh = get_wh();
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backup = console_info.wAttributes;
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// Print colored text
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if (SetConsoleTextAttribute(h_console, color) == 0) {
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fprintf(stderr, "[ERROR] Couldn't set terminal color\n");
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exit(1);
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}
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std::string tbuf;
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for (size_t i = 0; i < buf.size() && i < len; ++i) {
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for (const auto& c : buf[i]) {
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tbuf.push_back(c);
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}
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}
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tbuf.push_back('\0');
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printf("%s", tbuf.c_str());
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HANDLE hConsole = GetStdHandle(STD_OUTPUT_HANDLE);
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CONSOLE_CURSOR_INFO cursorInfo;
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GetConsoleCursorInfo(hConsole, &cursorInfo);
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cursorInfo.bVisible = TRUE;
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SetConsoleCursorInfo(hConsole, &cursorInfo);
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// Restore original color
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if (SetConsoleTextAttribute(h_console, backup) == 0) {
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fprintf(stderr, "[ERROR] Couldn't reset terminal color\n");
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exit(1);
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}
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#elif defined(OS_UNIX)
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// Set new terminal color
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printf("\033[");
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printf("%s", color);
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printf("m");
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// Print colored text
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printf("%s", text);
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// Resets the text to default color
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printf("\033[0m");
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#endif
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}
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