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a1e587b75a
These methods allow retrieving the entire charstrings index structure from a CFF or CFF2 table.
428 lines
14 KiB
C
428 lines
14 KiB
C
/*
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* Copyright © 2018 Google, Inc.
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*
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* This is part of HarfBuzz, a text shaping library.
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*
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* Permission is hereby granted, without written agreement and without
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* license or royalty fees, to use, copy, modify, and distribute this
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* software and its documentation for any purpose, provided that the
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* above copyright notice and the following two paragraphs appear in
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* all copies of this software.
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*
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* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
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* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
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* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
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* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
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* DAMAGE.
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*
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* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
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* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
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* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
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* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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*
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* Google Author(s): Garret Rieger
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*/
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#include "hb-test.h"
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#include "hb-subset-test.h"
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/* Unit tests for hb-subset-glyf.h */
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static void
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test_subset_32_tables (void)
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{
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hb_face_t *face = hb_test_open_font_file ("../fuzzing/fonts/oom-6ef8c96d3710262511bcc730dce9c00e722cb653");
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hb_subset_input_t *input = hb_subset_input_create_or_fail ();
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hb_set_t *codepoints = hb_subset_input_unicode_set (input);
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hb_face_t *subset;
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hb_set_add (codepoints, 'a');
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hb_set_add (codepoints, 'b');
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hb_set_add (codepoints, 'c');
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subset = hb_subset_or_fail (face, input);
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g_assert (!subset);
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hb_subset_input_destroy (input);
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hb_face_destroy (subset);
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hb_face_destroy (face);
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}
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static void
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test_subset_no_inf_loop (void)
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{
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hb_face_t *face = hb_test_open_font_file ("../fuzzing/fonts/clusterfuzz-testcase-minimized-hb-subset-fuzzer-5521982557782016");
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hb_subset_input_t *input = hb_subset_input_create_or_fail ();
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hb_set_t *codepoints = hb_subset_input_unicode_set (input);
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hb_face_t *subset;
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hb_set_add (codepoints, 'a');
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hb_set_add (codepoints, 'b');
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hb_set_add (codepoints, 'c');
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subset = hb_subset_or_fail (face, input);
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g_assert (!subset);
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hb_subset_input_destroy (input);
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hb_face_destroy (subset);
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hb_face_destroy (face);
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}
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static void
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test_subset_crash (void)
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{
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hb_face_t *face = hb_test_open_font_file ("../fuzzing/fonts/crash-4b60576767ee4d9fe1cc10959d89baf73d4e8249");
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hb_subset_input_t *input = hb_subset_input_create_or_fail ();
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hb_set_t *codepoints = hb_subset_input_unicode_set (input);
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hb_face_t *subset;
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hb_set_add (codepoints, 'a');
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hb_set_add (codepoints, 'b');
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hb_set_add (codepoints, 'c');
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subset = hb_subset_or_fail (face, input);
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g_assert (!subset);
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hb_subset_input_destroy (input);
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hb_face_destroy (subset);
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hb_face_destroy (face);
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}
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static void
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test_subset_set_flags (void)
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{
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hb_subset_input_t *input = hb_subset_input_create_or_fail ();
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g_assert (hb_subset_input_get_flags (input) == HB_SUBSET_FLAGS_DEFAULT);
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hb_subset_input_set_flags (input,
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HB_SUBSET_FLAGS_NAME_LEGACY |
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HB_SUBSET_FLAGS_NOTDEF_OUTLINE |
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HB_SUBSET_FLAGS_GLYPH_NAMES);
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g_assert (hb_subset_input_get_flags (input) ==
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(hb_subset_flags_t) (
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HB_SUBSET_FLAGS_NAME_LEGACY |
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HB_SUBSET_FLAGS_NOTDEF_OUTLINE |
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HB_SUBSET_FLAGS_GLYPH_NAMES));
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hb_subset_input_set_flags (input,
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HB_SUBSET_FLAGS_NAME_LEGACY |
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HB_SUBSET_FLAGS_NOTDEF_OUTLINE |
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HB_SUBSET_FLAGS_NO_PRUNE_UNICODE_RANGES);
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g_assert (hb_subset_input_get_flags (input) ==
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(hb_subset_flags_t) (
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HB_SUBSET_FLAGS_NAME_LEGACY |
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HB_SUBSET_FLAGS_NOTDEF_OUTLINE |
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HB_SUBSET_FLAGS_NO_PRUNE_UNICODE_RANGES));
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hb_subset_input_destroy (input);
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}
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static void
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test_subset_sets (void)
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{
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hb_subset_input_t *input = hb_subset_input_create_or_fail ();
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hb_set_t* set = hb_set_create ();
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hb_set_add (hb_subset_input_set (input, HB_SUBSET_SETS_GLYPH_INDEX), 83);
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hb_set_add (hb_subset_input_set (input, HB_SUBSET_SETS_UNICODE), 85);
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hb_set_clear (hb_subset_input_set (input, HB_SUBSET_SETS_LAYOUT_FEATURE_TAG));
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hb_set_add (hb_subset_input_set (input, HB_SUBSET_SETS_LAYOUT_FEATURE_TAG), 87);
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hb_set_add (set, 83);
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g_assert (hb_set_is_equal (hb_subset_input_glyph_set (input), set));
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hb_set_clear (set);
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hb_set_add (set, 85);
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g_assert (hb_set_is_equal (hb_subset_input_unicode_set (input), set));
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hb_set_clear (set);
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hb_set_add (set, 87);
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g_assert (hb_set_is_equal (hb_subset_input_set (input, HB_SUBSET_SETS_LAYOUT_FEATURE_TAG), set));
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hb_set_clear (set);
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hb_set_destroy (set);
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hb_subset_input_destroy (input);
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}
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static void
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test_subset_plan (void)
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{
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hb_face_t *face_abc = hb_test_open_font_file ("fonts/Roboto-Regular.abc.ttf");
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hb_face_t *face_ac = hb_test_open_font_file ("fonts/Roboto-Regular.ac.ttf");
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hb_set_t *codepoints = hb_set_create();
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hb_set_add (codepoints, 97);
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hb_set_add (codepoints, 99);
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hb_subset_input_t* input = hb_subset_test_create_input (codepoints);
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hb_set_destroy (codepoints);
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hb_subset_plan_t* plan = hb_subset_plan_create_or_fail (face_abc, input);
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g_assert (plan);
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const hb_map_t* mapping = hb_subset_plan_old_to_new_glyph_mapping (plan);
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g_assert (hb_map_get (mapping, 1) == 1);
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g_assert (hb_map_get (mapping, 3) == 2);
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mapping = hb_subset_plan_new_to_old_glyph_mapping (plan);
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g_assert (hb_map_get (mapping, 1) == 1);
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g_assert (hb_map_get (mapping, 2) == 3);
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mapping = hb_subset_plan_unicode_to_old_glyph_mapping (plan);
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g_assert (hb_map_get (mapping, 0x63) == 3);
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hb_face_t* face_abc_subset = hb_subset_plan_execute_or_fail (plan);
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hb_subset_test_check (face_ac, face_abc_subset, HB_TAG ('l','o','c', 'a'));
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hb_subset_test_check (face_ac, face_abc_subset, HB_TAG ('g','l','y','f'));
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hb_subset_input_destroy (input);
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hb_subset_plan_destroy (plan);
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hb_face_destroy (face_abc_subset);
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hb_face_destroy (face_abc);
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hb_face_destroy (face_ac);
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}
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static hb_blob_t*
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_ref_table (hb_face_t *face HB_UNUSED, hb_tag_t tag, void *user_data)
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{
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return hb_face_reference_table ((hb_face_t*) user_data, tag);
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}
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static void
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test_subset_create_for_tables_face (void)
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{
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hb_face_t *face_abc = hb_test_open_font_file ("fonts/Roboto-Regular.abc.ttf");
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hb_face_t *face_ac = hb_test_open_font_file ("fonts/Roboto-Regular.ac.ttf");
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hb_face_t *face_create_for_tables = hb_face_create_for_tables (
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_ref_table,
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face_abc,
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NULL);
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hb_set_t *codepoints = hb_set_create();
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hb_set_add (codepoints, 97);
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hb_set_add (codepoints, 99);
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hb_subset_input_t* input = hb_subset_test_create_input (codepoints);
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hb_set_destroy (codepoints);
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hb_face_t* face_abc_subset = hb_subset_or_fail (face_create_for_tables, input);
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hb_subset_test_check (face_ac, face_abc_subset, HB_TAG ('l','o','c', 'a'));
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hb_subset_test_check (face_ac, face_abc_subset, HB_TAG ('g','l','y','f'));
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hb_subset_test_check (face_ac, face_abc_subset, HB_TAG ('g','a','s','p'));
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hb_subset_input_destroy (input);
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hb_face_destroy (face_abc_subset);
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hb_face_destroy (face_create_for_tables);
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hb_face_destroy (face_abc);
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hb_face_destroy (face_ac);
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}
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#ifdef HB_EXPERIMENTAL_API
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const uint8_t CFF2[226] = {
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// From https://learn.microsoft.com/en-us/typography/opentype/spec/cff2
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0x02, 0x00, 0x05, 0x00, 0x07, 0xCF, 0x0C, 0x24, 0xC3, 0x11, 0x9B, 0x18, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x26, 0x00, 0x01, 0x00, 0x00, 0x00, 0x0C, 0x00, 0x01, 0x00, 0x00, 0x00, 0x1C, 0x00, 0x01,
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0x00, 0x02, 0xC0, 0x00, 0xE0, 0x00, 0x00, 0x00, 0xC0, 0x00, 0xC0, 0x00, 0xE0, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x02, 0x01, 0x01, 0x03, 0x05,
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0x20, 0x0A, 0x20, 0x0A, 0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x05, 0xF7, 0x06, 0xDA, 0x12, 0x77,
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0x9F, 0xF8, 0x6C, 0x9D, 0xAE, 0x9A, 0xF4, 0x9A, 0x95, 0x9F, 0xB3, 0x9F, 0x8B, 0x8B, 0x8B, 0x8B,
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0x85, 0x9A, 0x8B, 0x8B, 0x97, 0x73, 0x8B, 0x8B, 0x8C, 0x80, 0x8B, 0x8B, 0x8B, 0x8D, 0x8B, 0x8B,
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0x8C, 0x8A, 0x8B, 0x8B, 0x97, 0x17, 0x06, 0xFB, 0x8E, 0x95, 0x86, 0x9D, 0x8B, 0x8B, 0x8D, 0x17,
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0x07, 0x77, 0x9F, 0xF8, 0x6D, 0x9D, 0xAD, 0x9A, 0xF3, 0x9A, 0x95, 0x9F, 0xB3, 0x9F, 0x08, 0xFB,
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0x8D, 0x95, 0x09, 0x1E, 0xA0, 0x37, 0x5F, 0x0C, 0x09, 0x8B, 0x0C, 0x0B, 0xC2, 0x6E, 0x9E, 0x8C,
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0x17, 0x0A, 0xDB, 0x57, 0xF7, 0x02, 0x8C, 0x17, 0x0B, 0xB3, 0x9A, 0x77, 0x9F, 0x82, 0x8A, 0x8D,
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0x17, 0x0C, 0x0C, 0xDB, 0x95, 0x57, 0xF7, 0x02, 0x85, 0x8B, 0x8D, 0x17, 0x0C, 0x0D, 0xF7, 0x06,
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0x13, 0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x1B, 0xBD, 0xBD, 0xEF, 0x8C, 0x10, 0x8B, 0x15, 0xF8,
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0x88, 0x27, 0xFB, 0x5C, 0x8C, 0x10, 0x06, 0xF8, 0x88, 0x07, 0xFC, 0x88, 0xEF, 0xF7, 0x5C, 0x8C,
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0x10, 0x06
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};
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const uint8_t CFF2_ONLY_CHARSTRINGS[12] = {
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0x00, 0x00, 0x00, 0x02, 0x01, 0x01, 0x03, 0x05,
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0x20, 0x0A, 0x20, 0x0A
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};
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static void
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test_subset_cff2_get_charstring_data (void)
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{
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const uint8_t maxp_data[6] = {
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0x00, 0x00, 0x50, 0x00,
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0x00, 0x02 // numGlyphs
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};
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hb_blob_t* cff2 = hb_blob_create ((const char*) CFF2, 226, HB_MEMORY_MODE_READONLY, 0, 0);
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hb_blob_t* maxp = hb_blob_create ((const char*) maxp_data, 6, HB_MEMORY_MODE_READONLY, 0, 0);
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hb_face_t* builder = hb_face_builder_create ();
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hb_face_builder_add_table (builder, HB_TAG('C', 'F', 'F', '2'), cff2);
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hb_face_builder_add_table (builder, HB_TAG('m', 'a', 'x', 'p'), maxp);
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hb_blob_t* face_blob = hb_face_reference_blob (builder);
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hb_face_t* face = hb_face_create (face_blob, 0);
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hb_blob_t* cs0 = hb_subset_cff2_get_charstring_data (face, 0);
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unsigned int length;
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const uint8_t* data = (const uint8_t*) hb_blob_get_data (cs0, &length);
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g_assert (length == 2);
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g_assert (data[0] == 0x20);
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g_assert (data[1] == 0x0A);
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hb_blob_t* cs1 = hb_subset_cff2_get_charstring_data (face, 1);
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data = (const uint8_t*) hb_blob_get_data (cs1, &length);
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g_assert (length == 2);
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g_assert (data[0] == 0x20);
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g_assert (data[1] == 0x0A);
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hb_blob_t* cs2 = hb_subset_cff2_get_charstring_data (face, 2);
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data = (const uint8_t*) hb_blob_get_data (cs2, &length);
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g_assert (length == 0);
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hb_blob_destroy (cff2);
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hb_blob_destroy (maxp);
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hb_face_destroy (builder);
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hb_blob_destroy (face_blob);
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hb_face_destroy (face);
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hb_blob_destroy (cs0);
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hb_blob_destroy (cs1);
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hb_blob_destroy (cs2);
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}
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static void
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test_subset_cff2_get_all_charstrings_data (void)
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{
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const uint8_t maxp_data[6] = {
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0x00, 0x00, 0x50, 0x00,
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0x00, 0x02 // numGlyphs
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};
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hb_blob_t* cff2 = hb_blob_create ((const char*) CFF2, 226, HB_MEMORY_MODE_READONLY, 0, 0);
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hb_blob_t* maxp = hb_blob_create ((const char*) maxp_data, 6, HB_MEMORY_MODE_READONLY, 0, 0);
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hb_face_t* builder = hb_face_builder_create ();
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hb_face_builder_add_table (builder, HB_TAG('C', 'F', 'F', '2'), cff2);
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hb_face_builder_add_table (builder, HB_TAG('m', 'a', 'x', 'p'), maxp);
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hb_blob_t* face_blob = hb_face_reference_blob (builder);
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hb_face_t* face = hb_face_create (face_blob, 0);
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hb_blob_t* cs = hb_subset_cff2_get_charstrings_index (face);
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hb_blob_destroy (cff2);
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hb_blob_destroy (maxp);
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hb_face_destroy (builder);
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hb_blob_destroy (face_blob);
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hb_face_destroy (face);
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unsigned int length;
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const uint8_t* data = (const uint8_t*) hb_blob_get_data (cs, &length);
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g_assert_cmpint (length, ==, 12);
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for (int i = 0; i < 12; i++) {
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g_assert_cmpint(data[i], ==, CFF2_ONLY_CHARSTRINGS[i]);
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}
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hb_blob_destroy (cs);
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}
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static void
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test_subset_cff2_get_charstring_data_no_cff (void)
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{
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hb_face_t* builder = hb_face_builder_create ();
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hb_blob_t* face_blob = hb_face_reference_blob (builder);
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hb_face_t* face = hb_face_create (face_blob, 0);
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hb_blob_t* cs0 = hb_subset_cff2_get_charstring_data (face, 0);
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g_assert (hb_blob_get_length (cs0) == 0);
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hb_face_destroy (builder);
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hb_blob_destroy (face_blob);
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hb_face_destroy (face);
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hb_blob_destroy (cs0);
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}
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static void
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test_subset_cff2_get_charstring_data_invalid_cff2 (void)
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{
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// cff2 will parse as invalid since charstrings count doesn't not match num glyphs
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// (because there is no maxp).
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hb_blob_t* cff2 = hb_blob_create ((const char*) CFF2, 226, HB_MEMORY_MODE_READONLY, 0, 0);
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hb_face_t* builder = hb_face_builder_create ();
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hb_face_builder_add_table (builder, HB_TAG('C', 'F', 'F', '2'), cff2);
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hb_blob_t* face_blob = hb_face_reference_blob (builder);
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hb_face_t* face = hb_face_create (face_blob, 0);
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hb_blob_t* cs0 = hb_subset_cff2_get_charstring_data (face, 0);
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g_assert (hb_blob_get_length (cs0) == 0);
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hb_blob_destroy (cff2);
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hb_face_destroy (builder);
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hb_blob_destroy (face_blob);
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hb_face_destroy (face);
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hb_blob_destroy (cs0);
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}
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static void
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test_subset_cff2_get_charstring_data_lifetime (void)
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{
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const uint8_t maxp_data[6] = {
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0x00, 0x00, 0x50, 0x00,
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0x00, 0x02 // numGlyphs
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};
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hb_blob_t* cff2 = hb_blob_create ((const char*) CFF2, 226, HB_MEMORY_MODE_READONLY, 0, 0);
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hb_blob_t* maxp = hb_blob_create ((const char*) maxp_data, 6, HB_MEMORY_MODE_READONLY, 0, 0);
|
|
hb_face_t* builder = hb_face_builder_create ();
|
|
hb_face_builder_add_table (builder, HB_TAG('C', 'F', 'F', '2'), cff2);
|
|
hb_face_builder_add_table (builder, HB_TAG('m', 'a', 'x', 'p'), maxp);
|
|
hb_blob_t* face_blob = hb_face_reference_blob (builder);
|
|
hb_face_t* face = hb_face_create (face_blob, 0);
|
|
|
|
hb_blob_t* cs0 = hb_subset_cff2_get_charstring_data (face, 0);
|
|
|
|
// Destroy the blob that cs0 is referencing via subblob to ensure lifetimes are being
|
|
// handled correctly.
|
|
hb_blob_destroy (cff2);
|
|
hb_blob_destroy (maxp);
|
|
hb_face_destroy (builder);
|
|
hb_blob_destroy (face_blob);
|
|
hb_face_destroy (face);
|
|
|
|
unsigned int length;
|
|
const uint8_t* data = (const uint8_t*) hb_blob_get_data (cs0, &length);
|
|
g_assert (length == 2);
|
|
g_assert (data[0] == 0x20);
|
|
g_assert (data[1] == 0x0A);
|
|
|
|
hb_blob_destroy (cs0);
|
|
}
|
|
|
|
#endif
|
|
|
|
int
|
|
main (int argc, char **argv)
|
|
{
|
|
hb_test_init (&argc, &argv);
|
|
|
|
hb_test_add (test_subset_32_tables);
|
|
hb_test_add (test_subset_no_inf_loop);
|
|
hb_test_add (test_subset_crash);
|
|
hb_test_add (test_subset_set_flags);
|
|
hb_test_add (test_subset_sets);
|
|
hb_test_add (test_subset_plan);
|
|
hb_test_add (test_subset_create_for_tables_face);
|
|
|
|
#ifdef HB_EXPERIMENTAL_API
|
|
hb_test_add (test_subset_cff2_get_charstring_data);
|
|
hb_test_add (test_subset_cff2_get_all_charstrings_data);
|
|
hb_test_add (test_subset_cff2_get_charstring_data_no_cff);
|
|
hb_test_add (test_subset_cff2_get_charstring_data_invalid_cff2);
|
|
hb_test_add (test_subset_cff2_get_charstring_data_lifetime);
|
|
#endif
|
|
|
|
return hb_test_run();
|
|
}
|