kc3-lang/libxkbcommon/src/xkbcomp/xkbcomp.c

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• Hash : a392d268
  Author :
  Date : 2012-08-12T11:40:02
  

  Replace flex scanner with a hand-written one
  
  The scanner is very similar in structure to the one in xkbcomp/rules.c.
  It avoids copying and has nicer error reporting.
  
  It uses gperf to generate a hashtable for the keywords, which gives a
  nice speed boost (compared to the naive strcasecmp method at least). But
  since there's hardly a reason to regenerate it every time and require
  people to install gperf, the output (keywords.c) is added here as well.
  
  Here are some stats from test/rulescomp:
  
  Before:
  compiled 1000 keymaps in 4.052939625s
  ==22063==   total heap usage: 101,101 allocs, 101,101 frees, 11,840,834 bytes allocated
  
  After:
  compiled 1000 keymaps in 3.519665434s
  ==26505==   total heap usage: 99,945 allocs, 99,945 frees, 7,033,608 bytes allocated
  
  Signed-off-by: Ran Benita <ran234@gmail.com>
  

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• src/xkbcomp/xkbcomp.c

• /*
   * Copyright © 2009 Dan Nicholson
   * 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 (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.
   *
   * Authors: Dan Nicholson <dbn.lists@gmail.com>
   *          Ran Benita <ran234@gmail.com>
   *          Daniel Stone <daniel@fooishbar.org>
   */
  
  #include "xkbcomp-priv.h"
  #include "rules.h"
  
  static bool
  compile_keymap_file(struct xkb_keymap *keymap, XkbFile *file)
  {
      if (file->file_type != FILE_TYPE_KEYMAP) {
          log_err(keymap->ctx,
                  "Cannot compile a %s file alone into a keymap\n",
                  xkb_file_type_to_string(file->file_type));
          return false;
      }
  
      if (!CompileKeymap(file, keymap, MERGE_OVERRIDE)) {
          log_err(keymap->ctx,
                  "Failed to compile keymap\n");
          return false;
      }
  
      return true;
  }
  
  static bool
  text_v1_keymap_new_from_names(struct xkb_keymap *keymap,
                                const struct xkb_rule_names *rmlvo)
  {
      bool ok;
      struct xkb_component_names kccgst;
      XkbFile *file;
  
      log_dbg(keymap->ctx,
              "Compiling from RMLVO: rules '%s', model '%s', layout '%s', "
              "variant '%s', options '%s'\n",
              rmlvo->rules, rmlvo->model, rmlvo->layout, rmlvo->variant,
              rmlvo->options);
  
      ok = xkb_components_from_rules(keymap->ctx, rmlvo, &kccgst);
      if (!ok) {
          log_err(keymap->ctx,
                  "Couldn't look up rules '%s', model '%s', layout '%s', "
                  "variant '%s', options '%s'\n",
                  rmlvo->rules, rmlvo->model, rmlvo->layout, rmlvo->variant,
                  rmlvo->options);
          return false;
      }
  
      log_dbg(keymap->ctx,
              "Compiling from KcCGST: keycodes '%s', types '%s', "
              "compat '%s', symbols '%s'\n",
              kccgst.keycodes, kccgst.types, kccgst.compat, kccgst.symbols);
  
      file = XkbFileFromComponents(keymap->ctx, &kccgst);
  
      free(kccgst.keycodes);
      free(kccgst.types);
      free(kccgst.compat);
      free(kccgst.symbols);
  
      if (!file) {
          log_err(keymap->ctx,
                  "Failed to generate parsed XKB file from components\n");
          return false;
      }
  
      ok = compile_keymap_file(keymap, file);
      FreeXkbFile(file);
      return ok;
  }
  
  static bool
  text_v1_keymap_new_from_string(struct xkb_keymap *keymap,
                                 const char *string, size_t len)
  {
      bool ok;
      XkbFile *xkb_file;
  
      xkb_file = XkbParseString(keymap->ctx, string, len, "(input string)", NULL);
      if (!xkb_file) {
          log_err(keymap->ctx, "Failed to parse input xkb string\n");
          return NULL;
      }
  
      ok = compile_keymap_file(keymap, xkb_file);
      FreeXkbFile(xkb_file);
      return ok;
  }
  
  static bool
  text_v1_keymap_new_from_file(struct xkb_keymap *keymap, FILE *file)
  {
      bool ok;
      XkbFile *xkb_file;
  
      xkb_file = XkbParseFile(keymap->ctx, file, "(unknown file)", NULL);
      if (!xkb_file) {
          log_err(keymap->ctx, "Failed to parse input xkb file\n");
          return false;
      }
  
      ok = compile_keymap_file(keymap, xkb_file);
      FreeXkbFile(xkb_file);
      return ok;
  }
  
  const struct xkb_keymap_format_ops text_v1_keymap_format_ops = {
      .keymap_new_from_names = text_v1_keymap_new_from_names,
      .keymap_new_from_string = text_v1_keymap_new_from_string,
      .keymap_new_from_file = text_v1_keymap_new_from_file,
      .keymap_get_as_string = text_v1_keymap_get_as_string,
  };
  

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