kc3-lang/harfbuzz/util/helper-subset.hh

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• Hash : 68c7cfff
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  Date : 2025-08-17T16:57:32
  

  [util] Don't specify helper-subset.hh (#5473)
  
  Not needed I believe.

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• util/helper-subset.hh

• /*
   * Copyright © 2023  Google, Inc.
   *
   *  This is part of HarfBuzz, a text shaping library.
   *
   * Permission is hereby granted, without written agreement and without
   * license or royalty fees, to use, copy, modify, and distribute this
   * software and its documentation for any purpose, provided that the
   * above copyright notice and the following two paragraphs appear in
   * all copies of this software.
   *
   * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
   * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
   * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
   * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
   * DAMAGE.
   *
   * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
   * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
   * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
   * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
   * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
   *
   * Google Author(s): Garret Rieger
   */
  #ifndef HELPER_SUBSET_HH
  #define HELPER_SUBSET_HH
  
  #include "glib.h"
  #include <errno.h>
  #include <math.h>
  #include <stdbool.h>
  #include "hb-subset.h"
  
  #ifndef HB_NO_VAR
  
  static inline gboolean
  parse_instancing_spec (const char *arg,
                         hb_face_t* face,
                         hb_subset_input_t* input,
                         GError    **error)
  {
    char* s;
    while ((s = strtok((char *) arg, "=")))
    {
      arg = NULL;
      unsigned len = strlen (s);
      if (len > 4)  //Axis tags are 4 bytes.
      {
        g_set_error (error, G_OPTION_ERROR, G_OPTION_ERROR_BAD_VALUE,
                     "Failed parsing axis tag at: '%s'", s);
        return false;
      }
  
      /* support *=drop */
      if (0 == strcmp (s, "*"))
      {
        s = strtok(NULL, ", ");
        if (0 != strcmp (s, "drop"))
        {
          g_set_error (error, G_OPTION_ERROR, G_OPTION_ERROR_BAD_VALUE,
                       "Failed parsing axis position at: '%s'", s);
          return false;
        }
  
        if (!hb_subset_input_pin_all_axes_to_default (input, face))
        {
          g_set_error (error, G_OPTION_ERROR, G_OPTION_ERROR_BAD_VALUE,
                       "Failed pinning all axes to default.");
          return false;
        }
        continue;
      }
  
      hb_tag_t axis_tag = hb_tag_from_string (s, len);
  
      s = strtok(NULL, ", ");
      if (!s)
      {
        g_set_error (error, G_OPTION_ERROR, G_OPTION_ERROR_BAD_VALUE,
                     "Value not specified for axis: %c%c%c%c", HB_UNTAG (axis_tag));
        return false;
      }
  
      if (strcmp (s, "drop") == 0) {
        if (!hb_subset_input_pin_axis_to_default (input,
                                                  face,
                                                  axis_tag))
        {
          g_set_error (error, G_OPTION_ERROR, G_OPTION_ERROR_BAD_VALUE,
                       "Cannot pin axis: '%c%c%c%c', not present in fvar", HB_UNTAG (axis_tag));
          return false;
        }
        continue;
      }
      float min, def, max;
      if (!hb_subset_axis_range_from_string(s, -1, &min, &max, &def))
        return false;
  
      if (!hb_subset_input_set_axis_range (input,
                                           face, axis_tag,
                                           min, max, def))
      {
        g_set_error (error, G_OPTION_ERROR, G_OPTION_ERROR_BAD_VALUE,
                     "Cannot pin axis: '%c%c%c%c', not present in fvar", HB_UNTAG (axis_tag));
        return false;
      }
      continue;
    }
  
    return true;
  }
  
  #endif
  
  #endif
  

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