kc3-lang/libxkbcommon/tools/tools-common.c

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• Hash : c7f4e308
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  Date : 2023-11-01T13:06:38
  

  interactive-wayland: Add support for Compose

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• tools/tools-common.c

• /*
   * Copyright © 2009 Dan Nicholson <dbn.lists@gmail.com>
   * Copyright © 2012 Intel Corporation
   * Copyright © 2012 Ran Benita <ran234@gmail.com>
   *
   * Permission is hereby granted, free of charge, to any person obtaining a
   * copy of this software and associated documentation files (the "Software"),
   * to deal in the Software without restriction, including without limitation
   * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   * and/or sell copies of the Software, and to permit persons to whom the
   * Software is furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in
   * all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
   * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
   * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
   *
   * Except as contained in this notice, the names of the authors or their
   * institutions shall not be used in advertising or otherwise to promote the
   * sale, use or other dealings in this Software without prior written
   * authorization from the authors.
   *
   * Author: Dan Nicholson <dbn.lists@gmail.com>
   *         Daniel Stone <daniel@fooishbar.org>
   *         Ran Benita <ran234@gmail.com>
   */
  
  #include "config.h"
  
  #include <ctype.h>
  #include <errno.h>
  #include <limits.h>
  #include <fcntl.h>
  #include <stdlib.h>
  #include <string.h>
  #include <sys/types.h>
  #include <sys/stat.h>
  #ifdef _WIN32
  #include <io.h>
  #include <windows.h>
  #else
  #include <unistd.h>
  #include <termios.h>
  #endif
  
  #include "tools-common.h"
  
  static void
  print_keycode(struct xkb_keymap *keymap, const char* prefix,
                xkb_keycode_t keycode, const char *suffix) {
      const char *keyname = xkb_keymap_key_get_name(keymap, keycode);
      if (keyname) {
          printf("%s%-4s%s", prefix, keyname, suffix);
      } else {
          printf("%s%-4d%s", prefix, keycode, suffix);
      }
  }
  
  #ifdef ENABLE_PRIVATE_APIS
  #include "src/keymap.h"
  
  void
  print_keymap_modmaps(struct xkb_keymap *keymap) {
      printf("Modifiers mapping:\n");
      for (xkb_mod_index_t vmod = 0; vmod < xkb_keymap_num_mods(keymap); vmod++) {
          if (keymap->mods.mods[vmod].type & MOD_REAL)
              continue;
          printf("- %s: ", xkb_keymap_mod_get_name(keymap, vmod));
          if (keymap->mods.mods[vmod].mapping) {
              bool first = true;
              for (xkb_mod_index_t mod = 0; mod < xkb_keymap_num_mods(keymap); mod++) {
                  if (keymap->mods.mods[vmod].mapping & (1u << mod)) {
                      if (first) {
                          first = false;
                          printf("%s", xkb_keymap_mod_get_name(keymap, mod));
                      } else {
                          printf("+ %s", xkb_keymap_mod_get_name(keymap, mod));
                      }
                  }
              }
          } else {
              printf("(unmapped)");
          }
          printf("\n");
      }
  }
  
  #define MODMAP_PADDING  7
  #define VMODMAP_PADDING 9
  static void
  print_key_modmaps(struct xkb_keymap *keymap, xkb_keycode_t keycode) {
      const struct xkb_key *key = XkbKey(keymap, keycode);
      if (key != NULL) {
          xkb_mod_index_t mod;
  
          printf("modmap [ ");
          if (key->modmap) {
              for (mod = 0; mod < xkb_keymap_num_mods(keymap); mod++) {
                  if (key->modmap & (1u << mod)) {
                      printf("%-*s", (int) MODMAP_PADDING,
                             xkb_keymap_mod_get_name(keymap, mod));
                      break;
                  }
              }
          } else {
              printf("%*c", (int) MODMAP_PADDING, ' ');
          }
  
          printf(" ] vmodmap [ ");
          int length = 0;
          const char *mod_name;
          for (mod = 0; mod < xkb_keymap_num_mods(keymap); mod++) {
              if (key->vmodmap & (1u << mod)) {
                  mod_name = xkb_keymap_mod_get_name(keymap, mod);
                  length += strlen(mod_name) + 1;
                  printf("%s ", mod_name);
              }
          }
          if (length < VMODMAP_PADDING) {
              printf("%*c", (int) VMODMAP_PADDING - length, ' ');
          }
          printf("] ");
      }
  }
  
  void
  print_keys_modmaps(struct xkb_keymap *keymap) {
      const struct xkb_key *key;
      printf("Keys modmaps:\n");
      xkb_keys_foreach(key, keymap) {
          if (key->modmap || key->vmodmap) {
              print_keycode(keymap, "- ", key->keycode, ": ");
              print_key_modmaps(keymap, key->keycode);
              putchar('\n');
          }
      }
  }
  #endif
  
  void
  tools_print_keycode_state(char *prefix,
                            struct xkb_state *state,
                            struct xkb_compose_state *compose_state,
                            xkb_keycode_t keycode,
                            enum xkb_consumed_mode consumed_mode,
                            print_state_fields_mask_t fields)
  {
      struct xkb_keymap *keymap;
  
      xkb_keysym_t sym;
      const xkb_keysym_t *syms;
      int nsyms;
      char s[16];
      xkb_layout_index_t layout;
      enum xkb_compose_status status;
  
      keymap = xkb_state_get_keymap(state);
  
      nsyms = xkb_state_key_get_syms(state, keycode, &syms);
  
      if (nsyms <= 0)
          return;
  
      status = XKB_COMPOSE_NOTHING;
      if (compose_state)
          status = xkb_compose_state_get_status(compose_state);
  
      if (status == XKB_COMPOSE_COMPOSING || status == XKB_COMPOSE_CANCELLED)
          return;
  
      if (status == XKB_COMPOSE_COMPOSED) {
          sym = xkb_compose_state_get_one_sym(compose_state);
          syms = &sym;
          nsyms = 1;
      }
      else if (nsyms == 1) {
          sym = xkb_state_key_get_one_sym(state, keycode);
          syms = &sym;
      }
  
      if (prefix)
          printf("%s", prefix);
  
      print_keycode(keymap, "keycode [ ", keycode, " ] ");
  
  #ifdef ENABLE_PRIVATE_APIS
      if (fields & PRINT_MODMAPS) {
          print_key_modmaps(keymap, keycode);
      }
  #endif
  
      printf("keysyms [ ");
      for (int i = 0; i < nsyms; i++) {
          xkb_keysym_get_name(syms[i], s, sizeof(s));
          printf("%-*s ", (int) sizeof(s), s);
      }
      printf("] ");
  
      if (fields & PRINT_UNICODE) {
          if (status == XKB_COMPOSE_COMPOSED)
              xkb_compose_state_get_utf8(compose_state, s, sizeof(s));
          else
              xkb_state_key_get_utf8(state, keycode, s, sizeof(s));
          /* HACK: escape single control characters from C0 set using the
          * Unicode codepoint convention. Ideally we would like to escape
          * any non-printable character in the string.
          */
          if (!*s) {
              printf("unicode [   ] ");
          } else if (strlen(s) == 1 && (*s <= 0x1F || *s == 0x7F)) {
              printf("unicode [ U+%04hX ] ", *s);
          } else {
              printf("unicode [ %s ] ", s);
          }
      }
  
      layout = xkb_state_key_get_layout(state, keycode);
      if (fields & PRINT_LAYOUT) {
          printf("layout [ %s (%d) ] ",
                 xkb_keymap_layout_get_name(keymap, layout), layout);
      }
  
      printf("level [ %d ] ",
             xkb_state_key_get_level(state, keycode, layout));
  
      printf("mods [ ");
      for (xkb_mod_index_t mod = 0; mod < xkb_keymap_num_mods(keymap); mod++) {
          if (xkb_state_mod_index_is_active(state, mod,
                                            XKB_STATE_MODS_EFFECTIVE) <= 0)
              continue;
          if (xkb_state_mod_index_is_consumed2(state, keycode, mod,
                                               consumed_mode))
              printf("-%s ", xkb_keymap_mod_get_name(keymap, mod));
          else
              printf("%s ", xkb_keymap_mod_get_name(keymap, mod));
      }
      printf("] ");
  
      printf("leds [ ");
      for (xkb_led_index_t led = 0; led < xkb_keymap_num_leds(keymap); led++) {
          if (xkb_state_led_index_is_active(state, led) <= 0)
              continue;
          printf("%s ", xkb_keymap_led_get_name(keymap, led));
      }
      printf("] ");
  
      printf("\n");
  }
  
  void
  tools_print_state_changes(enum xkb_state_component changed)
  {
      if (changed == 0)
          return;
  
      printf("changed [ ");
      if (changed & XKB_STATE_LAYOUT_EFFECTIVE)
          printf("effective-layout ");
      if (changed & XKB_STATE_LAYOUT_DEPRESSED)
          printf("depressed-layout ");
      if (changed & XKB_STATE_LAYOUT_LATCHED)
          printf("latched-layout ");
      if (changed & XKB_STATE_LAYOUT_LOCKED)
          printf("locked-layout ");
      if (changed & XKB_STATE_MODS_EFFECTIVE)
          printf("effective-mods ");
      if (changed & XKB_STATE_MODS_DEPRESSED)
          printf("depressed-mods ");
      if (changed & XKB_STATE_MODS_LATCHED)
          printf("latched-mods ");
      if (changed & XKB_STATE_MODS_LOCKED)
          printf("locked-mods ");
      if (changed & XKB_STATE_LEDS)
          printf("leds ");
      printf("]\n");
  }
  
  #ifdef _WIN32
  void
  tools_disable_stdin_echo(void)
  {
      HANDLE stdin_handle = GetStdHandle(STD_INPUT_HANDLE);
      DWORD mode = 0;
      GetConsoleMode(stdin_handle, &mode);
      SetConsoleMode(stdin_handle, mode & ~ENABLE_ECHO_INPUT);
  }
  
  void
  tools_enable_stdin_echo(void)
  {
      HANDLE stdin_handle = GetStdHandle(STD_INPUT_HANDLE);
      DWORD mode = 0;
      GetConsoleMode(stdin_handle, &mode);
      SetConsoleMode(stdin_handle, mode | ENABLE_ECHO_INPUT);
  }
  #else
  void
  tools_disable_stdin_echo(void)
  {
      /* Same as `stty -echo`. */
      struct termios termios;
      if (tcgetattr(STDIN_FILENO, &termios) == 0) {
          termios.c_lflag &= ~ECHO;
          (void) tcsetattr(STDIN_FILENO, TCSADRAIN, &termios);
      }
  }
  
  void
  tools_enable_stdin_echo(void)
  {
      /* Same as `stty echo`. */
      struct termios termios;
      if (tcgetattr(STDIN_FILENO, &termios) == 0) {
          termios.c_lflag |= ECHO;
          (void) tcsetattr(STDIN_FILENO, TCSADRAIN, &termios);
      }
  }
  
  #endif
  
  int
  tools_exec_command(const char *prefix, int real_argc, char **real_argv)
  {
      char *argv[64] = {NULL};
      char executable[PATH_MAX];
      const char *command;
      int rc;
  
      if (((size_t)real_argc >= ARRAY_SIZE(argv))) {
          fprintf(stderr, "Too many arguments\n");
          return EXIT_INVALID_USAGE;
      }
  
      command = real_argv[0];
  
      rc = snprintf(executable, sizeof(executable),
                    "%s/%s-%s", LIBXKBCOMMON_TOOL_PATH, prefix, command);
      if (rc < 0 || (size_t) rc >= sizeof(executable)) {
          fprintf(stderr, "Failed to assemble command\n");
          return EXIT_FAILURE;
      }
  
      argv[0] = executable;
      for (int i = 1; i < real_argc; i++)
          argv[i] = real_argv[i];
  
      execv(executable, argv);
      if (errno == ENOENT) {
          fprintf(stderr, "Command '%s' is not available\n", command);
          return EXIT_INVALID_USAGE;
      } else {
          fprintf(stderr, "Failed to execute '%s' (%s)\n",
                  command, strerror(errno));
      }
  
      return EXIT_FAILURE;
  }
  

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