Files
ddidderr 75252a7651 feat(vt-capi): port the libghostty-vt C API
Ports ZIG/src/lib_vt.zig and terminal/c/* as crates/ghostty-vt-capi
(cdylib + staticlib + rlib, soname libghostty-vt.so) implementing the
unchanged include/ghostty/vt.h + vt/*.h ABI: OSC parser, SGR parser,
key events and key encoding, paste safety, colors, result codes - all
38 native symbols, plus the ghostty_wasm_* helpers on wasm32.

Verification:
- tests/abi.rs generates a C probe from the headers, compiled with cc,
  that checks sizeof/alignof/offsetof of every struct/union, every
  enumerator and #define against Rust, and links every declared symbol;
  nm -D exports equal the declared functions.
- Ghostty's example/c-vt* programs compile unchanged against the Rust
  library (shared and static) and produce the expected output.
- The wasm32 build runs Ghostty's wasm-key-encode/wasm-sgr example
  scripts unmodified under node (upstream's wasm-sgr tag table is stale
  vs sgr.h; a regenerated copy checks full output).

Test Plan:
- cargo test -p ghostty-vt-capi (22 unit + 2 ABI + 5 C + 3 wasm tests)
2026-10-12 05:16:41 +02:00

60 lines
1.9 KiB
C

#include <assert.h>
#include <stddef.h>
#include <stdio.h>
#include <string.h>
#include <ghostty/vt.h>
int main() {
GhosttyKeyEncoder encoder;
GhosttyResult result = ghostty_key_encoder_new(NULL, &encoder);
assert(result == GHOSTTY_SUCCESS);
// Set kitty flags with all features enabled
ghostty_key_encoder_setopt(encoder, GHOSTTY_KEY_ENCODER_OPT_KITTY_FLAGS, &(uint8_t){GHOSTTY_KITTY_KEY_ALL});
// Create key event
GhosttyKeyEvent event;
result = ghostty_key_event_new(NULL, &event);
assert(result == GHOSTTY_SUCCESS);
ghostty_key_event_set_action(event, GHOSTTY_KEY_ACTION_RELEASE);
ghostty_key_event_set_key(event, GHOSTTY_KEY_CONTROL_LEFT);
ghostty_key_event_set_mods(event, GHOSTTY_MODS_CTRL);
printf("Encoding event: left ctrl release with all Kitty flags enabled\n");
// Optionally, encode with null buffer to get required size. You can
// skip this step and provide a sufficiently large buffer directly.
// If there isn't enoug hspace, the function will return an out of memory
// error.
size_t required = 0;
result = ghostty_key_encoder_encode(encoder, event, NULL, 0, &required);
assert(result == GHOSTTY_OUT_OF_MEMORY);
printf("Required buffer size: %zu bytes\n", required);
// Encode the key event. We don't use our required size above because
// that was just an example; we know 128 bytes is enough.
char buf[128];
size_t written = 0;
result = ghostty_key_encoder_encode(encoder, event, buf, sizeof(buf), &written);
assert(result == GHOSTTY_SUCCESS);
printf("Encoded %zu bytes\n", written);
// Print the encoded sequence (hex and string)
printf("Hex: ");
for (size_t i = 0; i < written; i++) printf("%02x ", (unsigned char)buf[i]);
printf("\n");
printf("String: ");
for (size_t i = 0; i < written; i++) {
if (buf[i] == 0x1b) {
printf("\\x1b");
} else {
printf("%c", buf[i]);
}
}
printf("\n");
ghostty_key_event_free(event);
ghostty_key_encoder_free(encoder);
return 0;
}