135 lines
3.3 KiB
C
135 lines
3.3 KiB
C
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#include <stdio.h>
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#include <stdlib.h>
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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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#include "kilo.h"
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#include "terminal.h"
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int term_enable_raw(void) {
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if (tcgetattr(STDIN_FILENO, &E.orig_termios) == -1)
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return -1;
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struct termios raw = E.orig_termios;
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raw.c_iflag &= ~(BRKINT | ICRNL | INPCK | ISTRIP | IXON);
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raw.c_oflag &= ~(OPOST);
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raw.c_cflag |= (CS8);
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raw.c_lflag &= ~(ECHO | ICANON | IEXTEN | ISIG);
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raw.c_cc[VMIN] = 0;
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raw.c_cc[VTIME] = 1;
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atexit(term_disable_raw);
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return tcsetattr(STDIN_FILENO, TCSAFLUSH, &raw);
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}
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void term_disable_raw(void) {
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if (tcsetattr(STDIN_FILENO, TCSAFLUSH, &E.orig_termios) == -1)
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die ("term_disable_raw");
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}
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int term_clear(void) {
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if (write(STDOUT_FILENO, "\x1b[2J", 4) != 4) return -1;
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if (write(STDOUT_FILENO, "\x1b[H", 3) != 3) return -1;
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return 0;
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}
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int term_cursor_hidden(bool hidden) {
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if (write(STDOUT_FILENO, (hidden ? "\x1b[?25l" : "\x1b[?25h"), 6) != 6)
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return -1;
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return 0;
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}
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int term_get_win_size(int *row, int *col) {
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struct winsize ws;
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if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws) != -1 && ws.ws_col != 0) {
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*row = ws.ws_row;
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*col = ws.ws_col;
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return 0;
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} else {
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if (write(STDOUT_FILENO, "\x1b[999C\x1b[999B", 12) != 12) return -1;
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return term_get_cursor_pos(row, col);
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}
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}
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int term_get_cursor_pos(int *row, int *col) {
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char buf[16];
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if (write(STDOUT_FILENO, "\x1b[6n", 4) != 4) return -1;
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for (int i = 0; i < (int) sizeof(buf); i++) {
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if (read(STDIN_FILENO, buf+i, 1) == 0 || buf[i] == 'R') {
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buf[i] = '\0';
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break;
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}
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}
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if (sscanf(buf, "\x1b[%d;%d", row, col) == EOF)
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return -1;
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return 0;
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}
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int term_set_cursor_pos(int row, int col) {
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char buf[16];
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int len = snprintf(buf, sizeof(buf), "\x1b[%d;%dH", row, col);
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len = (len >= (int) sizeof(buf) ? (int) sizeof(buf) - 1 : len);
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if ((int) write(STDOUT_FILENO, buf, len) != len) return -1;
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return 0;
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}
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KEY term_read_key(void) {
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char c;
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while (read(STDIN_FILENO, &c, 1) == 0);
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if (c == '\x1b') {
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char buf[8] = { '\0' };
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for (int i = 0; i < (int) sizeof(buf); i++) {
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if (read(STDIN_FILENO, buf+i, 1) == 0) break;
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char escape_char;
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if (sscanf(buf, "[%c~", &escape_char) != EOF) {
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switch (escape_char) {
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case 'A': return ARROW_UP;
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case 'B': return ARROW_DOWN;
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case 'C': return ARROW_RIGHT;
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case 'D': return ARROW_LEFT;
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case 'H': return HOME;
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case 'F': return END;
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}
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}
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int escape_int;
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if (sscanf(buf, "[%d~", &escape_int) != EOF) {
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switch (escape_int) {
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case 1:
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case 7:
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return HOME;
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case 3:
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return DEL;
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case 4:
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case 8:
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return END;
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case 5:
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return PG_UP;
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case 6:
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return PG_DOWN;
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}
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}
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}
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return NOP;
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}
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return (KEY) c;
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}
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