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https://github.com/daveallie/crosspoint-reader.git
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c78f2a9840
## Summary Addresses #35. Maybe it could be wise to do some caching of the spine sizes (but performance isn't too bad).
65 lines
2.2 KiB
C++
65 lines
2.2 KiB
C++
#pragma once
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#include <Print.h>
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#include <string>
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#include <unordered_map>
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#include <vector>
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#include "Epub/EpubTocEntry.h"
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class ZipFile;
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class Epub {
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// the title read from the EPUB meta data
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std::string title;
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// the cover image
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std::string coverImageItem;
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// the ncx file
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std::string tocNcxItem;
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// where is the EPUBfile?
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std::string filepath;
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// the spine of the EPUB file
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std::vector<std::pair<std::string, std::string>> spine;
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// the file size of the spine items (proxy to book progress)
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std::vector<size_t> cumulativeSpineItemSize;
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// the toc of the EPUB file
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std::vector<EpubTocEntry> toc;
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// the base path for items in the EPUB file
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std::string contentBasePath;
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// Uniq cache key based on filepath
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std::string cachePath;
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bool findContentOpfFile(std::string* contentOpfFile) const;
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bool parseContentOpf(const std::string& contentOpfFilePath);
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bool parseTocNcxFile();
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public:
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explicit Epub(std::string filepath, const std::string& cacheDir) : filepath(std::move(filepath)) {
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// create a cache key based on the filepath
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cachePath = cacheDir + "/epub_" + std::to_string(std::hash<std::string>{}(this->filepath));
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}
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~Epub() = default;
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std::string& getBasePath() { return contentBasePath; }
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bool load();
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bool clearCache() const;
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void setupCacheDir() const;
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const std::string& getCachePath() const;
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const std::string& getPath() const;
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const std::string& getTitle() const;
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const std::string& getCoverImageItem() const;
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uint8_t* readItemContentsToBytes(const std::string& itemHref, size_t* size = nullptr,
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bool trailingNullByte = false) const;
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bool readItemContentsToStream(const std::string& itemHref, Print& out, size_t chunkSize) const;
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bool getItemSize(const std::string& itemHref, size_t* size) const;
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std::string& getSpineItem(int spineIndex);
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int getSpineItemsCount() const;
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size_t getCumulativeSpineItemSize(const int spineIndex) const;
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EpubTocEntry& getTocItem(int tocIndex);
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int getTocItemsCount() const;
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int getSpineIndexForTocIndex(int tocIndex) const;
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int getTocIndexForSpineIndex(int spineIndex) const;
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size_t getBookSize() const;
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uint8_t calculateProgress(const int currentSpineIndex, const float currentSpineRead);
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};
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