c-vt-cmake/src/main.c

Build and link libghostty-vt from a CMake project with FetchContent.

#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ghostty/vt.h>
 
int main() {
  // Create a terminal with a small grid
  GhosttyTerminal terminal;
  GhosttyResult result = ghostty_terminal_new(NULL, &terminal, 80, 24);
  assert(result == GHOSTTY_SUCCESS);
 
  // Write some VT-encoded content into the terminal
  const char *commands[] = {
    "Hello from a \033[1mCMake\033[0m-built program!\r\n",
    "Line 2: \033[4munderlined\033[0m text\r\n",
    "Line 3: \033[31mred\033[0m \033[32mgreen\033[0m \033[34mblue\033[0m\r\n",
  };
  for (size_t i = 0; i < sizeof(commands) / sizeof(commands[0]); i++) {
    ghostty_terminal_vt_write(terminal, (const uint8_t *)commands[i],
                              strlen(commands[i]));
  }
 
  // Format the terminal contents as plain text
  GhosttyFormatter formatter;
  result = ghostty_formatter_terminal_new(NULL, &formatter, terminal);
  assert(result == GHOSTTY_SUCCESS);
 
  GhosttyFormatterFormat emit = GHOSTTY_FORMATTER_FORMAT_PLAIN;
  result = ghostty_formatter_set(formatter, GHOSTTY_FORMATTER_OPT_EMIT, &emit);
  assert(result == GHOSTTY_SUCCESS);
 
  bool trim = true;
  result = ghostty_formatter_set(formatter, GHOSTTY_FORMATTER_OPT_TRIM, &trim);
  assert(result == GHOSTTY_SUCCESS);
 
  uint8_t *buf = NULL;
  size_t len = 0;
  result = ghostty_formatter_format_alloc(formatter, NULL, &buf, &len);
  assert(result == GHOSTTY_SUCCESS);
 
  printf("Plain text (%zu bytes):\n", len);
  fwrite(buf, 1, len, stdout);
  printf("\n");
 
  ghostty_free(NULL, buf, len);
  ghostty_formatter_free(formatter);
  ghostty_terminal_free(terminal);
  return 0;
}