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LibGfx/WOFF2: Tolerate incorrect totalSfntSize in WOFF2 header

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The specification says that this value is for reference only, so we
should be able to load a file where this value is incorrect.
This commit is contained in:
Tim Ledbetter 2023-10-24 07:54:20 +01:00 • committed by Andreas Kling
parent 0eaf13bae3
commit af633523af
4 changed files with 26 additions and 1 deletions
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22
Tests/LibGfx/TestWOFF2.cpp Normal file
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/*
* Copyright (c) 2023, Tim Ledbetter <timledbetter@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibGfx/Font/WOFF2/Font.h>
#include <LibTest/TestCase.h>
#ifdef AK_OS_SERENITY
# define TEST_INPUT(x) ("/usr/Tests/LibGfx/test-inputs/" x)
#else
# define TEST_INPUT(x) ("test-inputs/" x)
#endif
TEST_CASE(tolerate_incorrect_sfnt_size)
{
auto file = MUST(Core::MappedFile::map(TEST_INPUT("woff2/incorrect_sfnt_size.woff2"sv)));
auto font = TRY_OR_FAIL(WOFF2::Font::try_load_from_externally_owned_memory(file->bytes()));
EXPECT_EQ(font->family(), "Test"_string);
EXPECT_EQ(font->glyph_count(), 4u);
}