mirror of
https://github.com/daveallie/crosspoint-reader.git
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170e16033e
* Adds (optional) Hyphenation for English, French, German, Russian languages * Included hyphenation dictionaries add approximately 280kb to the flash usage (German alone takes 200kb) * Trie encoded dictionaries are adopted from hypher project (https://github.com/typst/hypher) * Soft hyphens (and other explicit hyphens) take precedence over dict-based hyphenation. Overall, the hyphenation rules are quite aggressive, as I believe it makes more sense on our smaller screen. --------- Co-authored-by: Dave Allie <dave@daveallie.com>
70 lines
2.5 KiB
C++
70 lines
2.5 KiB
C++
#pragma once
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#include <expat.h>
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#include <climits>
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#include <functional>
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#include <memory>
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#include "../ParsedText.h"
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#include "../blocks/TextBlock.h"
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class Page;
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class GfxRenderer;
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#define MAX_WORD_SIZE 200
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class ChapterHtmlSlimParser {
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const std::string& filepath;
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GfxRenderer& renderer;
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std::function<void(std::unique_ptr<Page>)> completePageFn;
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std::function<void(int)> progressFn; // Progress callback (0-100)
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int depth = 0;
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int skipUntilDepth = INT_MAX;
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int boldUntilDepth = INT_MAX;
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int italicUntilDepth = INT_MAX;
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// buffer for building up words from characters, will auto break if longer than this
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// leave one char at end for null pointer
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char partWordBuffer[MAX_WORD_SIZE + 1] = {};
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int partWordBufferIndex = 0;
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std::unique_ptr<ParsedText> currentTextBlock = nullptr;
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std::unique_ptr<Page> currentPage = nullptr;
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int16_t currentPageNextY = 0;
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int fontId;
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float lineCompression;
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bool extraParagraphSpacing;
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uint8_t paragraphAlignment;
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uint16_t viewportWidth;
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uint16_t viewportHeight;
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bool hyphenationEnabled;
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void startNewTextBlock(TextBlock::Style style);
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void makePages();
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// XML callbacks
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static void XMLCALL startElement(void* userData, const XML_Char* name, const XML_Char** atts);
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static void XMLCALL characterData(void* userData, const XML_Char* s, int len);
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static void XMLCALL endElement(void* userData, const XML_Char* name);
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public:
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explicit ChapterHtmlSlimParser(const std::string& filepath, GfxRenderer& renderer, const int fontId,
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const float lineCompression, const bool extraParagraphSpacing,
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const uint8_t paragraphAlignment, const uint16_t viewportWidth,
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const uint16_t viewportHeight, const bool hyphenationEnabled,
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const std::function<void(std::unique_ptr<Page>)>& completePageFn,
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const std::function<void(int)>& progressFn = nullptr)
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: filepath(filepath),
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renderer(renderer),
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fontId(fontId),
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lineCompression(lineCompression),
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extraParagraphSpacing(extraParagraphSpacing),
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paragraphAlignment(paragraphAlignment),
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viewportWidth(viewportWidth),
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viewportHeight(viewportHeight),
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hyphenationEnabled(hyphenationEnabled),
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completePageFn(completePageFn),
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progressFn(progressFn) {}
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~ChapterHtmlSlimParser() = default;
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bool parseAndBuildPages();
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void addLineToPage(std::shared_ptr<TextBlock> line);
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};
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