kc3-lang/libxkbcommon/src/context-priv.c

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• Hash : c79c8033
  Author :
  Date : 2019-11-09T21:25:01
  

  atom: combine atom_intern() and atom_lookup() Use an "add" bool parameter instead. This simplifies the code a bit. Signed-off-by: Ran Benita <ran@unusedvar.com>

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• src/context-priv.c

• /*
   * Copyright © 2012 Intel Corporation
   * Copyright © 2012 Ran Benita
   *
   * 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.
   *
   * Author: Daniel Stone <daniel@fooishbar.org>
   */
  
  #include <sys/types.h>
  #include <sys/stat.h>
  #include <errno.h>
  #include <unistd.h>
  
  #include "xkbcommon/xkbcommon.h"
  #include "utils.h"
  #include "context.h"
  
  unsigned int
  xkb_context_num_failed_include_paths(struct xkb_context *ctx)
  {
      return darray_size(ctx->failed_includes);
  }
  
  const char *
  xkb_context_failed_include_path_get(struct xkb_context *ctx,
                                      unsigned int idx)
  {
      if (idx >= xkb_context_num_failed_include_paths(ctx))
          return NULL;
  
      return darray_item(ctx->failed_includes, idx);
  }
  
  xkb_atom_t
  xkb_atom_lookup(struct xkb_context *ctx, const char *string)
  {
      return atom_intern(ctx->atom_table, string, strlen(string), false);
  }
  
  xkb_atom_t
  xkb_atom_intern(struct xkb_context *ctx, const char *string, size_t len)
  {
      return atom_intern(ctx->atom_table, string, len, true);
  }
  
  const char *
  xkb_atom_text(struct xkb_context *ctx, xkb_atom_t atom)
  {
      return atom_text(ctx->atom_table, atom);
  }
  
  void
  xkb_log(struct xkb_context *ctx, enum xkb_log_level level, int verbosity,
          const char *fmt, ...)
  {
      va_list args;
  
      if (ctx->log_level < level || ctx->log_verbosity < verbosity)
          return;
  
      va_start(args, fmt);
      ctx->log_fn(ctx, level, fmt, args);
      va_end(args);
  }
  
  char *
  xkb_context_get_buffer(struct xkb_context *ctx, size_t size)
  {
      char *rtrn;
  
      if (size >= sizeof(ctx->text_buffer))
          return NULL;
  
      if (sizeof(ctx->text_buffer) - ctx->text_next <= size)
          ctx->text_next = 0;
  
      rtrn = &ctx->text_buffer[ctx->text_next];
      ctx->text_next += size;
  
      return rtrn;
  }
  
  #ifndef DEFAULT_XKB_VARIANT
  #define DEFAULT_XKB_VARIANT NULL
  #endif
  
  #ifndef DEFAULT_XKB_OPTIONS
  #define DEFAULT_XKB_OPTIONS NULL
  #endif
  
  static const char *
  xkb_context_get_default_rules(struct xkb_context *ctx)
  {
      const char *env = NULL;
  
      if (ctx->use_environment_names)
          env = secure_getenv("XKB_DEFAULT_RULES");
  
      return env ? env : DEFAULT_XKB_RULES;
  }
  
  static const char *
  xkb_context_get_default_model(struct xkb_context *ctx)
  {
      const char *env = NULL;
  
      if (ctx->use_environment_names)
          env = secure_getenv("XKB_DEFAULT_MODEL");
  
      return env ? env : DEFAULT_XKB_MODEL;
  }
  
  static const char *
  xkb_context_get_default_layout(struct xkb_context *ctx)
  {
      const char *env = NULL;
  
      if (ctx->use_environment_names)
          env = secure_getenv("XKB_DEFAULT_LAYOUT");
  
      return env ? env : DEFAULT_XKB_LAYOUT;
  }
  
  static const char *
  xkb_context_get_default_variant(struct xkb_context *ctx)
  {
      const char *env = NULL;
      const char *layout = secure_getenv("XKB_DEFAULT_LAYOUT");
  
      /* We don't want to inherit the variant if they haven't also set a
       * layout, since they're so closely paired. */
      if (layout && ctx->use_environment_names)
          env = secure_getenv("XKB_DEFAULT_VARIANT");
  
      return env ? env : DEFAULT_XKB_VARIANT;
  }
  
  static const char *
  xkb_context_get_default_options(struct xkb_context *ctx)
  {
      const char *env = NULL;
  
      if (ctx->use_environment_names)
          env = secure_getenv("XKB_DEFAULT_OPTIONS");
  
      return env ? env : DEFAULT_XKB_OPTIONS;
  }
  
  void
  xkb_context_sanitize_rule_names(struct xkb_context *ctx,
                                  struct xkb_rule_names *rmlvo)
  {
      if (isempty(rmlvo->rules))
          rmlvo->rules = xkb_context_get_default_rules(ctx);
      if (isempty(rmlvo->model))
          rmlvo->model = xkb_context_get_default_model(ctx);
      /* Layout and variant are tied together, so don't try to use one from
       * the caller and one from the environment. */
      if (isempty(rmlvo->layout)) {
          rmlvo->layout = xkb_context_get_default_layout(ctx);
          rmlvo->variant = xkb_context_get_default_variant(ctx);
      }
      /* Options can be empty, so respect that if passed in. */
      if (rmlvo->options == NULL)
          rmlvo->options = xkb_context_get_default_options(ctx);
  }
  

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