74 lines
1.5 KiB
C
74 lines
1.5 KiB
C
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#include <sys/select.h>
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#include <termios.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <signal.h>
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#include <stdbool.h>
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static volatile bool ctrl_c_received = false;
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void sigint_handler(int sig_num) {
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ctrl_c_received = true;
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}
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void setup_sigint_handler() {
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signal(SIGINT, sigint_handler);
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}
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bool was_ctrl_c_received() {
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return ctrl_c_received;
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}
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static struct termios oldt, newt;
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void init_terminal() {
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// Get terminal attributes
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tcgetattr(STDIN_FILENO, &oldt);
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newt = oldt;
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// Set terminal to raw mode (no echo, non-canonical)
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newt.c_lflag &= ~(ICANON | ECHO);
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tcsetattr(STDIN_FILENO, TCSANOW, &newt);
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}
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void restore_terminal() {
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// Restore terminal to its old state
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tcsetattr(STDIN_FILENO, TCSANOW, &oldt);
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}
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char get_char_from_terminal() {
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char c = getchar();
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return c;
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}
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void write_char_to_terminal(char chr) {
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putchar(chr);
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fflush(stdout);
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}
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int is_char_available() {
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struct timeval tv;
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fd_set read_fd_set;
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// Don't wait at all, not even a microsecond
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tv.tv_sec = 0;
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tv.tv_usec = 0;
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// Watch stdin (fd 0) to see when it has input
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FD_ZERO(&read_fd_set);
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FD_SET(0, &read_fd_set);
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// Check if there's any input available
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if (select(1, &read_fd_set, NULL, NULL, &tv) == -1) {
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perror("select");
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return 0; // 0 indicates no characters available
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}
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if (FD_ISSET(0, &read_fd_set)) {
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// Character is available
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return 1;
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} else {
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// No character available
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return 0;
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}
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}
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