harfbuzz/test/api/test-subset-glyf.c

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2018-02-08 01:32:56 +01:00
/*
* 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
*/
#include <stdbool.h>
#include "hb-test.h"
#ifndef g_assert_cmpmem
#define g_assert_cmpmem(m1, l1, m2, l2) g_assert_true (l1 == l2 && memcmp (m1, m2, l1) == 0)
#endif
static char *
read_file (const char *path,
size_t *length)
{
FILE *fp = fopen (path, "rb");
size_t file_length = 0;
char *buffer = NULL;
if (fp && fseek (fp, 0, SEEK_END) == 0) {
file_length = ftell(fp);
rewind (fp);
}
bool success = false;
if (file_length > 0) {
buffer = (char *) calloc (file_length + 1, sizeof(char));
if (fread (buffer, 1, file_length, fp) == file_length) {
*length = file_length;
} else {
free (buffer);
buffer = NULL;
}
}
if (fp)
fclose(fp);
return buffer;
}
static hb_face_t *
open_font (const char *font_path)
{
gchar *path = g_test_build_filename(G_TEST_DIST, font_path, NULL);
size_t length;
char *font_data = 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;
}
return NULL;
}
/* Unit tests for hb-subset-glyf.h */
static void
test_subset_glyf (void)
{
hb_face_t *face_abc = open_font("fonts/Roboto-Regular.abc.ttf");
hb_face_t *face_ac = open_font("fonts/Roboto-Regular.ac.ttf");
g_assert (face_abc);
g_assert (face_ac);
hb_set_t *codepoints = hb_set_create();
hb_set_add (codepoints, 97);
hb_set_add (codepoints, 99);
hb_subset_profile_t *profile = hb_subset_profile_create();
hb_subset_input_t *input = hb_subset_input_create (codepoints);
hb_face_t *face_abc_subset = hb_subset (face_abc, profile, input);
g_assert (face_abc_subset);
hb_blob_t *glyf_expected_blob = hb_face_reference_table (face_ac, HB_TAG('g','l','y','f'));
hb_blob_t *glyf_actual_blob = hb_face_reference_table (face_abc_subset, HB_TAG('g','l','y','f'));
int expected_length, actual_length;
// TODO(grieger): Uncomment below once this actually works.
// g_assert_cmpmem(hb_blob_get_data (glyf_expected_blob, &expected_length), expected_length,
// hb_blob_get_data (glyf_actual_blob, &actual_length), actual_length);
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hb_blob_destroy (glyf_actual_blob);
hb_blob_destroy (glyf_expected_blob);
hb_subset_input_destroy (input);
hb_subset_profile_destroy (profile);
hb_set_destroy (codepoints);
hb_face_destroy (face_abc_subset);
hb_face_destroy (face_abc);
hb_face_destroy (face_ac);
}
int
main (int argc, char **argv)
{
hb_test_init (&argc, &argv);
hb_test_add (test_subset_glyf);
return hb_test_run();
}