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

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• Hash : 62fe73cb
  Author :
  Date : 2025-06-10T17:33:14
  

  parser: Raise the layout limit to 32
  

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• src/xkbcomp/xkbcomp.c

• /*
   * Copyright © 2009 Dan Nicholson
   * Copyright © 2012 Intel Corporation
   * Copyright © 2012 Ran Benita <ran234@gmail.com>
   * SPDX-License-Identifier: MIT
   *
   * Author: Dan Nicholson <dbn.lists@gmail.com>
   * Author: Ran Benita <ran234@gmail.com>
   * Author: Daniel Stone <daniel@fooishbar.org>
   */
  
  #include "config.h"
  
  #include <stdbool.h>
  
  #include "xkbcommon/xkbcommon.h"
  #include "xkbcomp-priv.h"
  #include "keymap.h"
  #include "rules.h"
  
  bool
  xkb_components_names_from_rules(struct xkb_context *ctx,
                                  const struct xkb_rule_names *rmlvo_in,
                                  struct xkb_rule_names *rmlvo_out,
                                  struct xkb_component_names *components_out)
  {
      /* Resolve default RMLVO values. We need a mutable copy of the input. */
      struct xkb_rule_names rmlvo = *rmlvo_in;
      xkb_context_sanitize_rule_names(ctx, &rmlvo);
  
      if (rmlvo_out) {
          /* Copy the sanitized RMLVO, if required. */
          *rmlvo_out = rmlvo;
      }
      if (!components_out) {
          /* KcCGST not required.
           * While RMLVO and KcCGST outputs are both optional, at least one must
           * be provided. */
          return !!rmlvo_out;
      }
  
      /* Resolve the RMLVO names to KcCGST components */
      *components_out = (struct xkb_component_names){ 0 };
      return xkb_components_from_rules(ctx, &rmlvo, components_out, NULL);
  }
  
  static bool
  compile_keymap_file(struct xkb_keymap *keymap, XkbFile *file)
  {
      if (file->file_type != FILE_TYPE_KEYMAP) {
          log_err(keymap->ctx, XKB_ERROR_KEYMAP_COMPILATION_FAILED,
                  "Cannot compile a %s file alone into a keymap\n",
                  xkb_file_type_to_string(file->file_type));
          return false;
      }
  
      if (!CompileKeymap(file, keymap)) {
          log_err(keymap->ctx, XKB_ERROR_KEYMAP_COMPILATION_FAILED,
                  "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, XKB_LOG_MESSAGE_NO_ID,
              "Compiling from RMLVO: rules '%s', model '%s', layout '%s', "
              "variant '%s', options '%s'\n",
              rmlvo->rules, rmlvo->model, rmlvo->layout, rmlvo->variant,
              rmlvo->options);
  
      /* Resolve the RMLVO components to KcCGST components and get the
       * expected number of layouts */
      ok = xkb_components_from_rules(keymap->ctx, rmlvo, &kccgst,
                                     &keymap->num_groups);
      if (!ok) {
          log_err(keymap->ctx, XKB_ERROR_KEYMAP_COMPILATION_FAILED,
                  "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;
      }
  
      const xkb_layout_index_t max_groups = format_max_groups(keymap->format);
      if (keymap->num_groups > max_groups)
          keymap->num_groups = max_groups;
  
      log_dbg(keymap->ctx, XKB_LOG_MESSAGE_NO_ID,
              "Compiling from KcCGST: keycodes '%s', types '%s', "
              "compat '%s', symbols '%s'\n",
              kccgst.keycodes, kccgst.types, kccgst.compatibility, kccgst.symbols);
  
      file = XkbFileFromComponents(keymap->ctx, &kccgst);
  
      free(kccgst.keycodes);
      free(kccgst.types);
      free(kccgst.compatibility);
      free(kccgst.symbols);
      free(kccgst.geometry);
  
      if (!file) {
          log_err(keymap->ctx, XKB_ERROR_KEYMAP_COMPILATION_FAILED,
                  "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, XKB_ERROR_KEYMAP_COMPILATION_FAILED,
                  "Failed to parse input xkb string\n");
          return false;
      }
  
      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, XKB_ERROR_KEYMAP_COMPILATION_FAILED,
                  "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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