mirror of https://github.com/JakubMelka/PDF4QT.git
97 lines
3.0 KiB
C++
97 lines
3.0 KiB
C++
// Copyright (C) 2020-2021 Jakub Melka
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//
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// This file is part of PDF4QT.
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//
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// PDF4QT is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// with the written consent of the copyright owner, any later version.
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//
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// PDF4QT is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with PDF4QT. If not, see <https://www.gnu.org/licenses/>.
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#ifndef PDFJAVASCRIPTSCANNER_H
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#define PDFJAVASCRIPTSCANNER_H
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#include "pdfdocument.h"
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namespace pdf
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{
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struct PDFJavaScriptEntry
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{
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enum class Type
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{
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Invalid,
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Document,
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Named,
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Form,
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Page,
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Annotation
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};
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explicit PDFJavaScriptEntry() = default;
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explicit PDFJavaScriptEntry(Type type, PDFInteger pageIndex, QString javaScript) :
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type(type), pageIndex(pageIndex), javaScript(javaScript)
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{
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}
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bool operator <(const PDFJavaScriptEntry& other) const
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{
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return std::tie(type, pageIndex, javaScript) < std::tie(other.type, other.pageIndex, other.javaScript);
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}
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bool operator==(const PDFJavaScriptEntry&) const = default;
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Type type = Type::Invalid;
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PDFInteger pageIndex = -1;
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QString javaScript;
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};
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/// Scans document for all javascript presence (in actions). Several option
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/// can be set, for example, scan only document actions, or stop scanning,
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/// when first javascript is found.
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class PDF4QTLIBSHARED_EXPORT PDFJavaScriptScanner
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{
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public:
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explicit PDFJavaScriptScanner(const PDFDocument* document);
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enum Option
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{
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AllPages = 0x0001, ///< Scan all pages
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FindFirstOnly = 0x0002, ///< Return only first javascript found
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ScanDocument = 0x0004, ///< Scan document related actions for javascript
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ScanNamed = 0x0008, ///< Scan named javascript in catalog
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ScanForm = 0x0010, ///< Scan javascript in form actions
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ScanPage = 0x0020, ///< Scan javascript in page annotations
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Optimize = 0x0040, ///< Remove redundant entries
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ScanMask = ScanDocument | ScanNamed | ScanForm | ScanPage
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};
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Q_DECLARE_FLAGS(Options, Option)
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using Entries = std::vector<PDFJavaScriptEntry>;
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/// Scans document for javascript actions using flags
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Entries scan(const std::vector<PDFInteger>& pages, Options options) const;
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/// Returns true, if document has any java script action. Calling
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/// this function can be slow.
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bool hasJavaScript() const;
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private:
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const PDFDocument* m_document;
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};
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} // namespace pdf
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Q_DECLARE_OPERATORS_FOR_FLAGS(pdf::PDFJavaScriptScanner::Options)
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#endif // PDFJAVASCRIPTSCANNER_H
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