kc3-lang/harfbuzz/test/api/test-subset-cmap.c

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• Hash : c370da45
  Author :
  Date : 2020-01-22T11:36:15
  

  [subset] Cmap table: remove encodingRecord entry for empty cmap4 subtable
  

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• test/api/test-subset-cmap.c

• /*
   * Copyright © 2018  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): Roderick Sheeter
   */
  
  #include "hb-test.h"
  #include "hb-subset-test.h"
  
  /* Unit tests for cmap subsetting */
  
  static void
  test_subset_cmap (void)
  {
    hb_face_t *face_abc = hb_test_open_font_file ("fonts/Roboto-Regular.abc.ttf");
    hb_face_t *face_ac = hb_test_open_font_file ("fonts/Roboto-Regular.ac.ttf");
  
    hb_set_t *codepoints = hb_set_create ();
    hb_face_t *face_abc_subset;
    hb_set_add (codepoints, 97);
    hb_set_add (codepoints, 99);
    face_abc_subset = hb_subset_test_create_subset (face_abc, hb_subset_test_create_input (codepoints));
    hb_set_destroy (codepoints);
  
    hb_subset_test_check (face_ac, face_abc_subset, HB_TAG ('c','m','a','p'));
  
    hb_face_destroy (face_abc_subset);
    hb_face_destroy (face_abc);
    hb_face_destroy (face_ac);
  }
  
  static void
  test_subset_cmap_non_consecutive_glyphs (void)
  {
    hb_face_t *face = hb_test_open_font_file ("fonts/Roboto-Regular.D7,D8,D9,DA,DE.ttf");
  
    hb_set_t *codepoints = hb_set_create ();
    hb_face_t *face_subset;
    hb_set_add (codepoints, 0xD7);
    hb_set_add (codepoints, 0xD8);
    hb_set_add (codepoints, 0xD9);
    hb_set_add (codepoints, 0xDA);
    hb_set_add (codepoints, 0xDE);
  
    face_subset = hb_subset_test_create_subset (face, hb_subset_test_create_input (codepoints));
    hb_set_destroy (codepoints);
  
    hb_subset_test_check (face, face_subset, HB_TAG ('c','m','a','p'));
  
    hb_face_destroy (face_subset);
    hb_face_destroy (face);
  }
  
  static void
  test_subset_cmap_noop (void)
  {
    hb_face_t *face_abc = hb_test_open_font_file ("fonts/Roboto-Regular.abc.ttf");
  
    hb_set_t *codepoints = hb_set_create();
    hb_face_t *face_abc_subset;
    hb_set_add (codepoints, 97);
    hb_set_add (codepoints, 98);
    hb_set_add (codepoints, 99);
    face_abc_subset = hb_subset_test_create_subset (face_abc, hb_subset_test_create_input (codepoints));
    hb_set_destroy (codepoints);
  
    hb_subset_test_check (face_abc, face_abc_subset, HB_TAG ('c','m','a','p'));
  
    hb_face_destroy (face_abc_subset);
    hb_face_destroy (face_abc);
  }
  
  static void
  test_subset_cmap4_no_exceeding_maximum_codepoint (void)
  {
    hb_face_t *face_origin = hb_test_open_font_file ("fonts/Mplus1p-Regular.ttf");
    hb_face_t *face_expected = hb_test_open_font_file ("fonts/Mplus1p-Regular-cmap4-testing.ttf");
  
    hb_set_t *codepoints = hb_set_create ();
    hb_face_t *face_subset;
    hb_set_add (codepoints, 0x20);
    hb_set_add (codepoints, 0x21);
    hb_set_add (codepoints, 0x1d542);
    hb_set_add (codepoints, 0x201a2);
  
    face_subset = hb_subset_test_create_subset (face_origin, hb_subset_test_create_input (codepoints));
    hb_set_destroy (codepoints);
  
    hb_subset_test_check (face_expected, face_subset, HB_TAG ('c','m','a','p'));
  
    hb_face_destroy (face_subset);
    hb_face_destroy (face_expected);
    hb_face_destroy (face_origin);
  }
  
  static void
  test_subset_cmap_empty_tables (void)
  {
    hb_face_t *face_abc = hb_test_open_font_file ("fonts/Roboto-Regular.abc.ttf");
    hb_face_t *face_empty = hb_test_open_font_file ("fonts/Roboto-Regular.empty.ttf");
  
    hb_set_t *codepoints = hb_set_create ();
    hb_face_t *face_abc_subset;
    hb_set_add (codepoints, 100);
    hb_set_add (codepoints, 101);
    face_abc_subset = hb_subset_test_create_subset (face_abc, hb_subset_test_create_input (codepoints));
    hb_set_destroy (codepoints);
  
    hb_subset_test_check (face_empty, face_abc_subset, HB_TAG ('c','m','a','p'));
  
    hb_face_destroy (face_abc_subset);
    hb_face_destroy (face_abc);
    hb_face_destroy (face_empty);
  }
  
  // TODO(rsheeter) test cmap to no codepoints
  
  int
  main (int argc, char **argv)
  {
    hb_test_init (&argc, &argv);
  
    hb_test_add (test_subset_cmap);
    hb_test_add (test_subset_cmap_noop);
    hb_test_add (test_subset_cmap_non_consecutive_glyphs);
    hb_test_add (test_subset_cmap4_no_exceeding_maximum_codepoint);
    hb_test_add (test_subset_cmap_empty_tables);
  
    return hb_test_run();
  }
  

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