kc3-lang/harfbuzz/src/test-buffer-serialize.cc

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• Hash : 7a912c47
  Author :
  Date : 2025-03-10T16:20:16
  

  [buffer-deserialize] Fix return value and parsing
  
  I think I got it right.
  
  Alternative to https://github.com/harfbuzz/harfbuzz/pull/5028
  

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• src/test-buffer-serialize.cc

• /*
   * Copyright © 2010,2011,2013  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"
  
  #include "hb.h"
  #include "hb-ot.h"
  #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)
  {
    bool ret = true;
  
  #ifndef HB_NO_BUFFER_SERIALIZE
  
    hb_buffer_serialize_format_t format = HB_BUFFER_SERIALIZE_FORMAT_TEXT;
    if (argc > 1)
    {
      if (!strcmp (argv[1], "--json"))
      {
        format = HB_BUFFER_SERIALIZE_FORMAT_JSON;
        argc--;
        argv++;
      }
      else if (!strcmp (argv[1], "--text"))
      {
        format = HB_BUFFER_SERIALIZE_FORMAT_TEXT;
        argc--;
        argv++;
      }
    }
  
    if (argc < 2)
      argv[1] = (char *) "/dev/null";
  
    hb_blob_t *blob = hb_blob_create_from_file_or_fail (argv[1]);
    assert (blob);
    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_face_destroy (face);
    hb_font_set_scale (font, upem, upem);
  
    hb_buffer_t *buf;
    buf = hb_buffer_create ();
  
    char line[BUFSIZ], out[BUFSIZ];
    while (fgets (line, sizeof(line), stdin))
    {
      hb_buffer_clear_contents (buf);
  
      while (true)
      {
        const char *p = line;
        const char *end = p + strlen (p);
        if (p < end && *(end - 1) == '\n')
  	  end--;
        if (!hb_buffer_deserialize_glyphs (buf,
  					 p, end - p, &p,
  					 font,
  					 format))
        {
          ret = false;
          break;
        }
  
        if (*p == '\n')
          break;
        if (p == line)
        {
  	ret = false;
  	break;
        }
  
        unsigned len = strlen (p);
        memmove (line, p, len);
        if (!fgets (line + len, sizeof(line) - len, stdin))
          line[len] = '\0';
      }
  
      unsigned count = hb_buffer_get_length (buf);
      for (unsigned offset = 0; offset < count;)
      {
        unsigned len;
        offset += hb_buffer_serialize_glyphs (buf, offset, count,
  					    out, sizeof (out), &len,
  					    font,
  					    format,
  					    HB_BUFFER_SERIALIZE_FLAG_GLYPH_FLAGS);
        fwrite (out, 1, len, stdout);
      }
      fputs ("\n", stdout);
    }
  
    hb_buffer_destroy (buf);
  
    hb_font_destroy (font);
  
  #endif
  
    return !ret;
  }
  

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