ansi_terminal.c

#ifdef _WIN32
 #define  _CRT_SECURE_NO_WARNINGS 1
 #include <windows.h>
#else
 #include <termios.h>
 #include <unistd.h>
#endif

#include <stdio.h>
#include <stdlib.h>

#ifdef _WIN32
 // Some old MinGW/CYGWIN distributions don't define this:
 #ifndef ENABLE_VIRTUAL_TERMINAL_PROCESSING
  #define ENABLE_VIRTUAL_TERMINAL_PROCESSING  0x0004
 #endif

static HANDLE stdoutHandle, stdinHandle;
static DWORD outModeInit, inModeInit;

void setupConsole(void) {
    DWORD outMode = 0, inMode = 0;
    stdoutHandle = GetStdHandle(STD_OUTPUT_HANDLE);
    stdinHandle = GetStdHandle(STD_INPUT_HANDLE);

    if(stdoutHandle == INVALID_HANDLE_VALUE || stdinHandle == INVALID_HANDLE_VALUE) {
        exit(GetLastError());
    }
    
    if(!GetConsoleMode(stdoutHandle, &outMode) || !GetConsoleMode(stdinHandle, &inMode)) {
        exit(GetLastError());
    }

    outModeInit = outMode;
    inModeInit = inMode;
    
    // Enable ANSI escape codes
    outMode |= ENABLE_VIRTUAL_TERMINAL_PROCESSING;

    // Set stdin as no echo and unbuffered
    inMode &= ~(ENABLE_ECHO_INPUT | ENABLE_LINE_INPUT);

    if(!SetConsoleMode(stdoutHandle, outMode) || !SetConsoleMode(stdinHandle, inMode)) {
        exit(GetLastError());
    }    
}

void restoreConsole(void) {
    // Reset colors
    printf("\x1b[0m");    
    
    // Reset console mode
    if(!SetConsoleMode(stdoutHandle, outModeInit) || !SetConsoleMode(stdinHandle, inModeInit)) {
        exit(GetLastError());
    }
}
#else

static struct termios orig_term;
static struct termios new_term;

void setupConsole(void) {
    tcgetattr(STDIN_FILENO, &orig_term);
    new_term = orig_term;

    new_term.c_lflag &= ~(ICANON | ECHO);

    tcsetattr(STDIN_FILENO, TCSANOW, &new_term);
}

void restoreConsole(void) {
    // Reset colors
    printf("\x1b[0m");

    // Reset console mode
    tcsetattr(STDIN_FILENO, TCSANOW, &orig_term);
}
#endif

void getCursorPosition(int *row, int *col) {
    printf("\x1b[6n");
    char buff[128];
    int indx = 0;
    for(;;) {
        int cc = getchar();
        buff[indx] = (char)cc;
        indx++;
        if(cc == 'R') {
            buff[indx + 1] = '\0';
            break;
        }
    }    
    sscanf(buff, "\x1b[%d;%dR", row, col);
    fseek(stdin, 0, SEEK_END);
}