kc3-lang/libxkbcommon/tools/compile-compose.c

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• Author : Ran Benita
  Date : 2025-01-29 15:35:22
  Hash : e120807b
  Message : Update license notices to SDPX short identifiers + update LICENSE Fix #628. Signed-off-by: Ran Benita <ran@unusedvar.com>

• tools/compile-compose.c

• /*
   * Copyright © 2021 Ran Benita <ran@unusedvar.com>
   * SPDX-License-Identifier: MIT
   */
  
  #include "config.h"
  
  #include <getopt.h>
  #include <locale.h>
  #include <stdbool.h>
  
  #include "xkbcommon/xkbcommon.h"
  #include "xkbcommon/xkbcommon-keysyms.h"
  #include "xkbcommon/xkbcommon-compose.h"
  #include "src/compose/dump.h"
  #include "src/keysym.h"
  #include "tools/tools-common.h"
  
  static void
  usage(FILE *fp, char *progname)
  {
      fprintf(fp,
              "Usage: %s [--help] [--locale LOCALE] [--test] [FILE]\n",
              progname);
      fprintf(fp,
              "\n"
              "Compile a Compose file and print it\n"
              "\n"
              "Options:\n"
              " --help\n"
              "    Print this help and exit\n"
              " --file FILE\n"
              "    Specify a Compose file to load.\n"
              "    DEPRECATED: use the positional argument instead.\n"
              " --locale LOCALE\n"
              "    Specify the locale directly, instead of relying on the environment variables\n"
              "    LC_ALL, LC_TYPE and LANG.\n"
              " --test\n"
              "    Test compilation but do not print the Compose file.\n");
  }
  
  int
  main(int argc, char *argv[])
  {
      const char *locale = NULL;
      const char *path = NULL;
      enum xkb_compose_format format = XKB_COMPOSE_FORMAT_TEXT_V1;
      bool test = false;
      enum options {
          OPT_FILE,
          OPT_LOCALE,
          OPT_TEST,
      };
      static struct option opts[] = {
          {"help",   no_argument,       0, 'h'},
          {"file",   required_argument, 0, OPT_FILE},
          {"locale", required_argument, 0, OPT_LOCALE},
          {"test",   no_argument,       0, OPT_TEST},
          {0, 0, 0, 0},
      };
  
      setlocale(LC_ALL, "");
  
      /* Initialize the locale to use */
      locale = setlocale(LC_CTYPE, NULL);
      if (!locale)
          locale = "C";
  
      while (1) {
          int opt;
          int option_index = 0;
  
          opt = getopt_long(argc, argv, "h", opts, &option_index);
          if (opt == -1)
              break;
  
          switch (opt) {
          case OPT_FILE:
              path = optarg;
              fprintf(stderr, "WARNING: the flag --file is deprecated\n");
              break;
          case OPT_LOCALE:
              locale = optarg;
              break;
          case OPT_TEST:
              test = true;
              break;
          case 'h':
              usage(stdout, argv[0]);
              return EXIT_SUCCESS;
          default:
              usage(stderr, argv[0]);
              return EXIT_INVALID_USAGE;
          }
      }
  
      if (locale == NULL) {
          fprintf(stderr, "ERROR: Cannot determine the locale.\n");
          usage(stderr, argv[0]);
          return EXIT_INVALID_USAGE;
      }
  
      if (optind < argc && !isempty(argv[optind])) {
          /* Some positional arguments left: use a file */
          if (path) {
              fprintf(stderr,
                      "ERROR: Path already provided via the flag: --file\n");
              usage(stderr, argv[0]);
              exit(EXIT_INVALID_USAGE);
          }
          path = argv[optind++];
          if (optind < argc) {
              fprintf(stderr, "ERROR: Too many positional arguments\n");
              usage(stderr, argv[0]);
              exit(EXIT_INVALID_USAGE);
          }
      } else if (is_pipe_or_regular_file(STDIN_FILENO)) {
          /* No positional argument: detect piping */
          path = "-";
      }
  
      struct xkb_context *ctx = xkb_context_new(XKB_CONTEXT_NO_FLAGS);
      if (!ctx) {
          fprintf(stderr, "ERROR: Couldn't create xkb context\n");
          return EXIT_FAILURE;
      }
  
      int ret = EXIT_FAILURE;
      struct xkb_compose_table *compose_table = NULL;
  
      if (path != NULL) {
          FILE *file;
          if (isempty(path) || strcmp(path, "-") == 0) {
              /* Read from stdin */
              file = tools_read_stdin();
          } else {
              /* Read from regular file */
              file = fopen(path, "rb");
          }
  
          if (file == NULL) {
              perror(path);
              goto file_error;
          }
  
          compose_table =
              xkb_compose_table_new_from_file(ctx, file, locale, format,
                                              XKB_COMPOSE_COMPILE_NO_FLAGS);
          fclose(file);
          if (!compose_table) {
              fprintf(stderr,
                      "ERROR: Couldn't create compose from file: %s\n", path);
              goto out;
          }
      } else {
          compose_table =
              xkb_compose_table_new_from_locale(ctx, locale,
                                                XKB_COMPOSE_COMPILE_NO_FLAGS);
          if (!compose_table) {
              fprintf(stderr,
                      "ERROR: Couldn't create compose from locale \"%s\"\n",
                      locale);
              goto out;
          }
      }
  
      if (test) {
          ret = EXIT_SUCCESS;
          goto out;
      }
  
      ret = xkb_compose_table_dump(stdout, compose_table)
          ? EXIT_SUCCESS
          : EXIT_FAILURE;
  
  out:
      xkb_compose_table_unref(compose_table);
  file_error:
      xkb_context_unref(ctx);
  
      return ret;
  }