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LibGfx/PortableFormat: Propagate errors from decode()
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parent
7ec310384a
commit
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2 changed files with 20 additions and 34 deletions
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@ -184,52 +184,35 @@ static void set_pixels(TContext& context, Vector<Gfx::Color> const& color_data)
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}
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template<typename TContext>
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static bool decode(TContext& context)
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static ErrorOr<void> decode(TContext& context)
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{
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if (context.state >= TContext::State::Decoded)
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return true;
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return {};
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auto error_guard = ArmedScopeGuard([&] {
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context.state = TContext::State::Error;
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});
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TRY(read_magic_number(context));
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if (read_magic_number(context).is_error())
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return false;
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TRY(read_whitespace(context));
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if (read_whitespace(context).is_error())
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return false;
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if (read_width(context).is_error())
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return false;
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if (read_whitespace(context).is_error())
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return false;
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if (read_height(context).is_error())
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return false;
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TRY(read_width(context));
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TRY(read_whitespace(context));
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TRY(read_height(context));
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if (context.width > maximum_width_for_decoded_images || context.height > maximum_height_for_decoded_images) {
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dbgln("This portable network image is too large for comfort: {}x{}", context.width, context.height);
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return false;
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return Error::from_string_literal("This portable network image is too large.");
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}
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if (read_whitespace(context).is_error())
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return false;
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TRY(read_whitespace(context));
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if constexpr (requires { context.format_details.max_val; }) {
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if (read_max_val(context).is_error())
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return false;
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if (read_whitespace(context).is_error())
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return false;
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TRY(read_max_val(context));
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TRY(read_whitespace(context));
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}
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if (read_image_data(context).is_error())
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return false;
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TRY(read_image_data(context));
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error_guard.disarm();
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context.state = TContext::State::Decoded;
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return true;
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return {};
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}
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}
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