kc3-lang/harfbuzz/src/test.cc

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• Author : Behdad Esfahbod
  Date : 2021-06-14 15:46:04
  Hash : bdfed8f1
  Message : [blob] Add failing versions of create API Fixes https://github.com/harfbuzz/harfbuzz/issues/2567 New API: +hb_blob_create_or_fail() +hb_blob_create_from_file_or_fail() Use these in util/ to distinguish empty file from not-found file. Only err on the latter.

• src/test.cc

• /*
   * Copyright © 2010,2011  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): Behdad Esfahbod
   */
  
  #include "hb.hh"
  
  #ifdef HAVE_FREETYPE
  #include "hb-ft.h"
  #endif
  
  #ifdef HB_NO_OPEN
  #define hb_blob_create_from_file_or_fail(x)  hb_blob_get_empty ()
  #endif
  
  int
  main (int argc, char **argv)
  {
    if (argc != 2) {
      fprintf (stderr, "usage: %s font-file.ttf\n", argv[0]);
      exit (1);
    }
  
    hb_blob_t *blob = hb_blob_create_from_file_or_fail (argv[1]);
    assert (blob);
    printf ("Opened font file %s: %u bytes long\n", argv[1], hb_blob_get_length (blob));
  
    /* Create the face */
    hb_face_t *face = hb_face_create (blob, 0 /* first face */);
    hb_blob_destroy (blob);
    blob = nullptr;
    unsigned int upem = hb_face_get_upem (face);
  
    hb_font_t *font = hb_font_create (face);
    hb_font_set_scale (font, upem, upem);
  
  #ifdef HAVE_FREETYPE
    hb_ft_font_set_funcs (font);
  #endif
  
    hb_buffer_t *buffer = hb_buffer_create ();
  
    hb_buffer_add_utf8 (buffer, "\xe0\xa4\x95\xe0\xa5\x8d\xe0\xa4\xb0\xe0\xa5\x8d\xe0\xa4\x95", -1, 0, -1);
    hb_buffer_guess_segment_properties (buffer);
  
    hb_shape (font, buffer, nullptr, 0);
  
    unsigned int count = hb_buffer_get_length (buffer);
    hb_glyph_info_t *infos = hb_buffer_get_glyph_infos (buffer, nullptr);
    hb_glyph_position_t *positions = hb_buffer_get_glyph_positions (buffer, nullptr);
  
    for (unsigned int i = 0; i < count; i++)
    {
      hb_glyph_info_t *info = &infos[i];
      hb_glyph_position_t *pos = &positions[i];
  
      printf ("cluster %d	glyph 0x%x at	(%d,%d)+(%d,%d)\n",
  	    info->cluster,
  	    info->codepoint,
  	    pos->x_offset,
  	    pos->y_offset,
  	    pos->x_advance,
  	    pos->y_advance);
  
    }
  
    hb_buffer_destroy (buffer);
    hb_font_destroy (font);
    hb_face_destroy (face);
  
    return 0;
  }