1c07dbe966
Change-Id: I887a86506b700a21b56bbc66d8b3b2e1bcec0da5 Reviewed-on: https://gerrit.libreoffice.org/c/core/+/96651 Tested-by: Jenkins Reviewed-by: Julien Nabet <serval2412@yahoo.fr>
88 lines
2.3 KiB
C++
88 lines
2.3 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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#pragma once
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#include <tools/toolsdllapi.h>
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#include <rtl/ustring.hxx>
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#include <algorithm>
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#include <memory>
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/** Simple JSON encoder designed specifically for LibreOfficeKit purposes.
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*
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* (1) Minimal allocations/re-allocations/copying
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* (2) Small/simple JSON documents
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* (3) ascii property names
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*/
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namespace tools
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{
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class ScopedJsonWriterNode;
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class TOOLS_DLLPUBLIC JsonWriter
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{
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friend class ScopedJsonWriterNode;
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int mSpaceAllocated;
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std::unique_ptr<char[]> maBuffer;
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int mStartNodeCount;
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char* mPos;
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bool mbFirstFieldInNode;
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public:
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JsonWriter();
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~JsonWriter();
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[[nodiscard]] ScopedJsonWriterNode startNode(const char*);
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void put(const char* pPropName, const OUString& rPropValue);
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void put(const char* pPropName, const OString& rPropValue);
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void put(const char* pPropName, const char* pPropVal);
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void put(const char*, int);
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/** Hands ownership of the underlying storage buffer to the caller,
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* after this no more document modifications may be written. */
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char* extractData();
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private:
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void endNode();
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void addCommaBeforeField();
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inline void ensureSpace(int noMoreBytesRequired)
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{
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int currentUsed = mPos - maBuffer.get();
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if (currentUsed + noMoreBytesRequired >= mSpaceAllocated)
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{
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auto newSize = std::max(mSpaceAllocated * 2, (currentUsed + noMoreBytesRequired) * 2);
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auto pNew = new char[newSize];
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memcpy(pNew, maBuffer.get(), currentUsed);
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maBuffer.reset(pNew);
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mPos = maBuffer.get();
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}
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}
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};
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/**
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* Auto-closes the node.
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*/
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class ScopedJsonWriterNode
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{
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friend class JsonWriter;
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JsonWriter& mrWriter;
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ScopedJsonWriterNode(JsonWriter& rWriter)
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: mrWriter(rWriter)
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{
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}
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public:
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~ScopedJsonWriterNode() { mrWriter.endNode(); }
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};
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};
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/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */
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