kc3-lang/libxkbcommon/test/log.c

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• Hash : c0065c95
  Author :
  Date : 2023-09-21T20:06:27
  

  Messages: merge macros with and without message code Previously we had two types of macros for logging: with and without message code. They were intended to be merged afterwards. The idea is to use a special code – `XKB_LOG_MESSAGE_NO_ID = 0` – that should *not* be displayed. But we would like to avoid checking this special code at run time. This is achieved using macro tricks; they are detailed in the code (see: `PREPEND_MESSAGE_ID`). Now it is also easier to spot the remaining undocumented log entries: just search `XKB_LOG_MESSAGE_NO_ID`.

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• test/log.c

• /*
   * 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 (including the next
   * paragraph) 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 OR COPYRIGHT HOLDERS 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.
   */
  
  #include "config.h"
  
  #include "test.h"
  #include "context.h"
  #include "messages-codes.h"
  
  #ifdef __GNUC__
  #pragma GCC diagnostic ignored "-Wmissing-format-attribute"
  #endif
  
  static const char *
  log_level_to_string(enum xkb_log_level level)
  {
      switch (level) {
      case XKB_LOG_LEVEL_CRITICAL:
          return "critical";
      case XKB_LOG_LEVEL_ERROR:
          return "error";
      case XKB_LOG_LEVEL_WARNING:
          return "warning";
      case XKB_LOG_LEVEL_INFO:
          return "info";
      case XKB_LOG_LEVEL_DEBUG:
          return "debug";
      }
  
      return "unknown";
  }
  
  ATTR_PRINTF(3, 0) static void
  log_fn(struct xkb_context *ctx, enum xkb_log_level level,
         const char *fmt, va_list args)
  {
      char *s;
      int size;
      darray_char *ls = xkb_context_get_user_data(ctx);
      assert(ls);
  
      size = vasprintf(&s, fmt, args);
      assert(size != -1);
  
      darray_append_string(*ls, log_level_to_string(level));
      darray_append_lit(*ls, ": ");
      darray_append_string(*ls, s);
      free(s);
  }
  
  int
  main(void)
  {
      darray_char log_string;
      struct xkb_context *ctx;
      int ret;
  
      ret = setenv("XKB_LOG_LEVEL", "warn", 1);
      assert(ret == 0);
      ret = setenv("XKB_LOG_VERBOSITY", "5", 1);
      assert(ret == 0);
      ctx = test_get_context(0);
      assert(ctx);
  
      darray_init(log_string);
      xkb_context_set_user_data(ctx, &log_string);
      xkb_context_set_log_fn(ctx, log_fn);
  
      log_warn(ctx, XKB_LOG_MESSAGE_NO_ID, "first warning: %d\n", 87);
      log_info(ctx, XKB_LOG_MESSAGE_NO_ID, "first info\n");
      log_dbg(ctx, XKB_LOG_MESSAGE_NO_ID, "first debug: %s\n", "hello");
      log_err(ctx, XKB_LOG_MESSAGE_NO_ID, "first error: %lu\n", 115415UL);
      log_vrb(ctx, 5, XKB_LOG_MESSAGE_NO_ID, "first verbose 5\n");
  
      xkb_context_set_log_level(ctx, XKB_LOG_LEVEL_DEBUG);
      log_warn(ctx, XKB_LOG_MESSAGE_NO_ID, "second warning: %d\n", 87);
      log_dbg(ctx, XKB_LOG_MESSAGE_NO_ID, "second debug: %s %s\n", "hello", "world");
      log_info(ctx, XKB_LOG_MESSAGE_NO_ID, "second info\n");
      log_err(ctx, XKB_ERROR_MALFORMED_NUMBER_LITERAL, "second error: %lu\n", 115415UL);
      log_vrb(ctx, 6, XKB_LOG_MESSAGE_NO_ID, "second verbose 6\n");
  
      xkb_context_set_log_verbosity(ctx, 0);
      xkb_context_set_log_level(ctx, XKB_LOG_LEVEL_CRITICAL);
      log_warn(ctx, XKB_LOG_MESSAGE_NO_ID, "third warning: %d\n", 87);
      log_dbg(ctx, XKB_LOG_MESSAGE_NO_ID, "third debug: %s %s\n", "hello", "world");
      log_info(ctx, XKB_LOG_MESSAGE_NO_ID, "third info\n");
      log_err(ctx, XKB_LOG_MESSAGE_NO_ID, "third error: %lu\n", 115415UL);
      log_vrb(ctx, 0, XKB_LOG_MESSAGE_NO_ID, "third verbose 0\n");
  
      printf("%s", log_string.item);
  
      assert(streq(log_string.item,
                   "warning: first warning: 87\n"
                   "error: first error: 115415\n"
                   "warning: first verbose 5\n"
                   "warning: second warning: 87\n"
                   "debug: second debug: hello world\n"
                   "info: second info\n"
                   "error: [XKB-034] second error: 115415\n"));
  
      xkb_context_unref(ctx);
      darray_free(log_string);
      return 0;
  }
  

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