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ICC: Strip trailing nul characters from MultiLocalizedUnicodeTagData

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Having those trailing nuls is invalid per spec, but it happens in
practice (in already checked-in test files, no less).
This commit is contained in:
Nico Weber 2023-06-26 13:44:13 -04:00 • committed by Sam Atkins
parent dedbc17160
commit 3dd6638177
2 changed files with 19 additions and 0 deletions
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12
Tests/LibGfx/TestICCProfile.cpp
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@ -8,6 +8,7 @@
#include <LibCore/MappedFile.h>
#include <LibGfx/ICC/BinaryWriter.h>
#include <LibGfx/ICC/Profile.h>
#include <LibGfx/ICC/Tags.h>
#include <LibGfx/ICC/WellKnownProfiles.h>
#include <LibGfx/ImageFormats/JPEGLoader.h>
#include <LibGfx/ImageFormats/PNGLoader.h>
@ -42,6 +43,17 @@ TEST_CASE(jpg)
auto icc_profile = MUST(Gfx::ICC::Profile::try_load_from_externally_owned_memory(icc_bytes.value()));
EXPECT(icc_profile->is_v4());
icc_profile->for_each_tag([](auto tag_signature, auto tag_data) {
if (tag_signature == Gfx::ICC::profileDescriptionTag) {
// Required per v4 spec, but in practice even v4 files sometimes have TextDescriptionTagData descriptions. Not icc-v4.jpg, though.
EXPECT_EQ(tag_data->type(), Gfx::ICC::MultiLocalizedUnicodeTagData::Type);
auto& multi_localized_unicode = static_cast<Gfx::ICC::MultiLocalizedUnicodeTagData&>(*tag_data);
EXPECT_EQ(multi_localized_unicode.records().size(), 1u);
auto& record = multi_localized_unicode.records()[0];
EXPECT_EQ(record.text, "sRGB built-in"sv);
}
});
}
TEST_CASE(webp_extended_lossless)