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LibPDF: Move code to compute full page contents into Page

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Pure code move, no behavior change.
This commit is contained in:
Nico Weber 2023-07-12 09:27:26 -04:00 • committed by Tim Flynn
parent f4f8a6a1bf
commit 69c965b987
4 changed files with 41 additions and 22 deletions
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37
Userland/Libraries/LibPDF/Page.cpp Normal file
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/*
* Copyright (c) 2021-2022, Matthew Olsson <mattco@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibPDF/Document.h>
#include <LibPDF/ObjectDerivatives.h>
#include <LibPDF/Page.h>
namespace PDF {
PDFErrorOr<ByteBuffer> Page::page_contents(Document& document) const
{
if (contents.is_null())
return ByteBuffer {};
// Use our own vector, as the /Content can be an array with multiple
// streams which gets concatenated.
// FIXME: Text operators are supposed to only have effects on the current
// stream object. Do the text operators treat this concatenated stream
// as one stream or multiple?
ByteBuffer byte_buffer;
if (contents->is<ArrayObject>()) {
auto array = contents->cast<ArrayObject>();
for (auto& ref : *array) {
auto bytes = TRY(document.resolve_to<StreamObject>(ref))->bytes();
byte_buffer.append(bytes.data(), bytes.size());
}
} else {
auto bytes = contents->cast<StreamObject>()->bytes();
byte_buffer.append(bytes.data(), bytes.size());
}
return byte_buffer;
}
}