kc3-lang/libxkbcommon/test/x11comp.c

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• Author : Pierre Le Marre
  Date : 2025-05-02 19:21:09
  Hash : cd512b8f
  Message : x11: Fix capitalization transformation

• test/x11comp.c

• /*
   * Copyright © 2014 Ran Benita <ran234@gmail.com>
   * SPDX-License-Identifier: MIT
   */
  
  #include "config.h"
  
  #include <assert.h>
  #include <signal.h>
  #include <spawn.h>
  #include <stdint.h>
  #include <stdio.h>
  #include <stdlib.h>
  #include <sys/types.h>
  #include <sys/wait.h>
  #include <unistd.h>
  
  #include "test.h"
  #include "evdev-scancodes.h"
  #include "xkbcommon/xkbcommon.h"
  #include "xkbcommon/xkbcommon-keysyms.h"
  #include "xkbcommon/xkbcommon-names.h"
  #include "xkbcommon/xkbcommon-x11.h"
  #include "xvfb-wrapper.h"
  
  /* Offset between evdev keycodes (where KEY_ESCAPE is 1), and the evdev XKB
   * keycode set (where ESC is 9). */
  #define EVDEV_OFFSET 8
  
  X11_TEST(test_basic)
  {
      struct xkb_keymap *keymap = NULL;
      struct xkb_state *state = NULL;
      xcb_connection_t *conn;
      int32_t device_id;
      int ret, status;
      char *xkb_path;
      char *original, *dump;
      char *envp[] = { NULL };
      char *xkbcomp_argv[] = {
          (char *) "xkbcomp", (char *) "-I", NULL /* xkb_path */, display, NULL
      };
      pid_t xkbcomp_pid;
  
      conn = xcb_connect(display, NULL);
      if (xcb_connection_has_error(conn)) {
          ret = TEST_SETUP_FAILURE;
          goto err_conn;
      }
      ret = xkb_x11_setup_xkb_extension(conn,
                                        XKB_X11_MIN_MAJOR_XKB_VERSION,
                                        XKB_X11_MIN_MINOR_XKB_VERSION,
                                        XKB_X11_SETUP_XKB_EXTENSION_NO_FLAGS,
                                        NULL, NULL, NULL, NULL);
      if (!ret) {
          ret = TEST_SETUP_FAILURE;
          goto err_xcb;
      }
      device_id = xkb_x11_get_core_keyboard_device_id(conn);
      assert(device_id != -1);
  
      xkb_path = test_get_path("keymaps/host.xkb");
      assert(ret >= 0);
      xkbcomp_argv[2] = xkb_path;
      ret = posix_spawnp(&xkbcomp_pid, "xkbcomp", NULL, NULL, xkbcomp_argv, envp);
      free(xkb_path);
      if (ret != 0) {
          fprintf(stderr,
                  "[ERROR] Cannot run xkbcomp. posix_spawnp error %d: %s\n",
                  ret, strerror(ret));
          if (ret == ENOENT) {
              fprintf(stderr,
                      "[ERROR] xkbcomp may be missing. "
                      "Please install the corresponding package, "
                      "e.g. \"xkbcomp\" or \"x11-xkb-utils\".\n");
          }
          ret = TEST_SETUP_FAILURE;
          goto err_xcb;
      }
      ret = waitpid(xkbcomp_pid, &status, 0);
      if (ret < 0 || !WIFEXITED(status) || WEXITSTATUS(status) != 0) {
          ret = TEST_SETUP_FAILURE;
          goto err_xcb;
      }
  
      struct xkb_context *ctx = test_get_context(0);
      keymap = xkb_x11_keymap_new_from_device(ctx, conn, device_id,
                                              XKB_KEYMAP_COMPILE_NO_FLAGS);
      assert(keymap);
  
      original = test_read_file("keymaps/host.xkb");
      assert(original);
  
      dump = xkb_keymap_get_as_string(keymap, XKB_KEYMAP_USE_ORIGINAL_FORMAT);
      assert(dump);
  
      if (!streq(original, dump)) {
          fprintf(stderr,
                  "round-trip test failed: dumped map differs from original\n");
          fprintf(stderr, "length: dumped %zu, original %zu\n",
                  strlen(dump),
                  strlen(original));
          fprintf(stderr, "dumped map:\n");
          fprintf(stderr, "%s\n", dump);
          ret = 1;
          goto err_dump;
      }
  
      state = xkb_x11_state_new_from_device(keymap, conn, device_id);
      assert(state);
  
      /* Check capitalization transformation */
      xkb_keysym_t sym;
      sym = xkb_state_key_get_one_sym(state, KEY_A + EVDEV_OFFSET);
      assert(sym == XKB_KEY_a);
      sym = xkb_state_key_get_one_sym(state, KEY_LEFT + EVDEV_OFFSET);
      assert(sym == XKB_KEY_Left);
      const xkb_mod_index_t caps_idx =
          xkb_keymap_mod_get_index(keymap, XKB_MOD_NAME_CAPS);
      assert(caps_idx != XKB_MOD_INVALID);
      const xkb_mod_mask_t caps = UINT32_C(1) << caps_idx;
      xkb_state_update_mask(state, 0, 0, caps, 0, 0, 0);
      sym = xkb_state_key_get_one_sym(state, KEY_A + EVDEV_OFFSET);
      assert(sym == XKB_KEY_A);
      sym = xkb_state_key_get_one_sym(state, KEY_LEFT + EVDEV_OFFSET);
      assert(sym == XKB_KEY_Left);
  
      ret = EXIT_SUCCESS;
  err_dump:
      free(original);
      free(dump);
      xkb_state_unref(state);
      xkb_keymap_unref(keymap);
      xkb_context_unref(ctx);
  err_xcb:
      xcb_disconnect(conn);
  err_conn:
      return ret;
  }
  
  int main(void) {
      test_init();
  
      return x11_tests_run();
  }