c-vt-paste/src/main.c

This example demonstrates how to use the paste utilities to check if paste data is safe before sending it to the terminal.

#include <stdio.h>
#include <string.h>
#include <ghostty/vt.h>

void safety_example() {
  const char* safe_data = "hello world";
  const char* unsafe_data = "rm -rf /\n";
 
  if (ghostty_paste_is_safe(safe_data, strlen(safe_data))) {
    printf("Safe to paste\n");
  }
 
  if (!ghostty_paste_is_safe(unsafe_data, strlen(unsafe_data))) {
    printf("Unsafe! Contains newline\n");
  }
}

void encode_example() {
  // The input buffer is modified in place (unsafe bytes are stripped).
  char data[] = "hello\nworld";
  char buf[64];
  size_t written = 0;
 
  GhosttyResult result = ghostty_paste_encode(
      data, strlen(data), true, buf, sizeof(buf), &written);
 
  if (result == GHOSTTY_SUCCESS) {
    printf("Encoded %zu bytes: ", written);
    fwrite(buf, 1, written, stdout);
    printf("\n");
  }
}
 
int main() {
  safety_example();
 
  // Test unsafe paste data with bracketed paste end sequence
  const char *unsafe_escape = "evil\x1b[201~code";
  if (!ghostty_paste_is_safe(unsafe_escape, strlen(unsafe_escape))) {
    printf("Data with escape sequence is UNSAFE\n");
  }
 
  // Test empty data
  const char *empty_data = "";
  if (ghostty_paste_is_safe(empty_data, 0)) {
    printf("Empty data is safe\n");
  }
 
  encode_example();
 
  return 0;
}