kc3-lang/harfbuzz/test/api/hb-subset-test.h

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• Hash : 9bd6d252
  Author :
  Date : 2018-02-23T13:05:58
  

  [subset] clone trim logic from fonttools glyf handling
  

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• test/api/hb-subset-test.h

• /*
   * 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): Garret Rieger
   */
  
  #ifndef HB_SUBSET_TEST_H
  #define HB_SUBSET_TEST_H
  
  #include <stdio.h>
  
  #include "hb-test.h"
  #include "hb-subset.h"
  
  
  HB_BEGIN_DECLS
  
  static inline char *
  hb_subset_test_read_file (const char *path,
                            size_t     *length /* OUT */)
  {
    FILE *fp = fopen (path, "rb");
  
    long file_length = 0;
    char *buffer = NULL;
    if (fp && fseek (fp, 0, SEEK_END) == 0)
    {
      file_length = ftell(fp);
      rewind (fp);
    }
  
    if (file_length > 0)
    {
      buffer = (char *) calloc (file_length + 1, sizeof (char));
      if (buffer && fread (buffer, 1, file_length, fp) == (size_t) file_length)
      {
        *length = file_length;
      }
      else
      {
        free (buffer);
        buffer = NULL;
      }
    }
  
    if (fp)
      fclose(fp);
  
    return buffer;
  }
  
  static inline hb_face_t *
  hb_subset_test_open_font (const char *font_path)
  {
  #if GLIB_CHECK_VERSION(2,37,2)
    gchar* path = g_test_build_filename(G_TEST_DIST, font_path, NULL);
  #else
    gchar* path = g_strdup(fontFile);
  #endif
  
    size_t length;
    char *font_data = hb_subset_test_read_file(path, &length);
  
    if (font_data != NULL) {
      hb_blob_t *blob = hb_blob_create (font_data,
                                        length,
                                        HB_MEMORY_MODE_READONLY,
                                        font_data,
                                        free);
      hb_face_t *face = hb_face_create (blob, 0);
      hb_blob_destroy (blob);
      return face;
    }
    g_assert (false);
    return NULL; /* Shut up, compiler! */
  }
  
  static inline hb_subset_input_t *
  hb_subset_test_create_input(const hb_set_t  *codepoints)
  {
    hb_subset_input_t *input = hb_subset_input_create_or_fail ();
    hb_set_t * input_codepoints = hb_subset_input_unicode_set (input);
    hb_set_union (input_codepoints, codepoints);
    return input;
  }
  
  static inline hb_face_t *
  hb_subset_test_create_subset (hb_face_t *source,
                                hb_subset_input_t *input)
  {
    hb_subset_profile_t *profile = hb_subset_profile_create();
    hb_face_t *subset = hb_subset (source, profile, input);
    g_assert (subset);
  
    hb_subset_profile_destroy (profile);
    hb_subset_input_destroy (input);
    return subset;
  }
  
  static inline void
  hb_subset_test_check (hb_face_t *expected,
                        hb_face_t *actual,
                        hb_tag_t   table)
  {
    fprintf(stderr, "compare %c%c%c%c\n", HB_UNTAG(table));
    hb_blob_t *expected_blob = hb_face_reference_table (expected, table);
    hb_blob_t *actual_blob = hb_face_reference_table (actual, table);
    hb_test_assert_blobs_equal (expected_blob, actual_blob);
    hb_blob_destroy (expected_blob);
    hb_blob_destroy (actual_blob);
  }
  
  
  HB_END_DECLS
  
  #endif /* HB_SUBSET_TEST_H */
  

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