62 lines
2.1 KiB
C++
62 lines
2.1 KiB
C++
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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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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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#include "config.h"
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#include <fstream>
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#include <iostream>
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#include <memory>
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#include <Poco/File.h>
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#include <Poco/Path.h>
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#include <Poco/SHA1Engine.h>
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#include "TileCache.hpp"
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namespace {
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std::string cacheFileName(const std::string& docURL, int width, int height, int tilePosX, int tilePosY, int tileWidth, int tileHeight)
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{
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Poco::SHA1Engine digestEngine;
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digestEngine.update(docURL.c_str(), docURL.size());
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digestEngine.update(std::to_string(width));
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digestEngine.update(std::to_string(height));
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digestEngine.update(std::to_string(tilePosX));
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digestEngine.update(std::to_string(tilePosY));
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digestEngine.update(std::to_string(tileWidth));
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digestEngine.update(std::to_string(tileHeight));
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std::string digest = Poco::DigestEngine::digestToHex(digestEngine.digest()).insert(3, "/").insert(2, "/").insert(1, "/");
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return LOOLWSD_CACHEDIR "/" + digest + ".png";
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}
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}
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std::unique_ptr<std::fstream> TileCache::lookup(const std::string& docURL, int width, int height, int tilePosX, int tilePosY, int tileWidth, int tileHeight)
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{
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std::string file = cacheFileName(docURL, width, height, tilePosX, tilePosY, tileWidth, tileHeight);
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std::unique_ptr<std::fstream> result(new std::fstream(file, std::ios::in));
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return result;
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}
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void TileCache::save(const std::string& docURL, int width, int height, int tilePosX, int tilePosY, int tileWidth, int tileHeight, const char *data, size_t size)
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{
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std::string file = cacheFileName(docURL, width, height, tilePosX, tilePosY, tileWidth, tileHeight);
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Poco::File(Poco::Path(file).makeFile().makeParent()).createDirectories();
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std::fstream outStream(file, std::ios::out);
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outStream.write(data, size);
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outStream.close();
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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