8fa01bc83a
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On ESP32-C3 with USB CDC, Serial.printf() blocks indefinitely when USB is not connected. This caused device freezes when booted without USB. Solution: Call Serial.setTxTimeoutMs(0) after Serial.begin() to make all Serial output non-blocking. Also added if (Serial) guards to high-traffic logging paths in EpubReaderActivity as belt-and-suspenders protection. Includes documentation of the debugging process and Serial call inventory. Also applies clang-format to fix pre-existing formatting issues.
65 lines
2.0 KiB
C++
65 lines
2.0 KiB
C++
#pragma once
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#include <Epub/blocks/TextBlock.h>
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#include <functional>
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#include <memory>
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#include <string>
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class GfxRenderer;
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/**
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* DictHtmlParser parses HTML dictionary definitions into ParsedText.
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*
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* Supports:
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* - Bold: <b>, <strong>
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* - Italic: <i>, <em>
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* - Underline: <u>, <ins>
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* - Lists: <ol>, <li> with numbering/bullets
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* - Block elements: <p>, <br>, <hr>, </html> (entry separator)
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* - HTML entities: numeric (&#NNN;, &#xHHH;) and named (&, etc.)
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* - Superscript: <sup> rendered as ^text
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*/
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class DictHtmlParser {
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public:
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/**
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* Parse HTML definition and populate ParsedText with styled words.
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* Each paragraph/block creates a separate ParsedText via the callback.
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*
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* @param html The HTML definition text
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* @param fontId Font ID for text width calculations
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* @param renderer Reference to renderer for layout
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* @param onParagraph Callback invoked for each paragraph/block of text
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*/
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static void parse(const std::string& html, int fontId, const GfxRenderer& renderer, uint16_t viewportWidth,
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const std::function<void(std::shared_ptr<TextBlock>)>& onTextBlock);
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private:
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// Decode HTML entity at position i (starting with '&')
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static std::string decodeEntity(const std::string& html, size_t& i);
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// Extract tag name from position (after '<')
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static std::string extractTagName(const std::string& html, size_t start, bool& isClosing);
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// Check if tag is a block-level element
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static bool isBlockTag(const std::string& tagName);
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// Check if tag starts/ends bold
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static bool isBoldTag(const std::string& tagName);
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// Check if tag starts/ends italic
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static bool isItalicTag(const std::string& tagName);
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// Check if tag starts/ends underline
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static bool isUnderlineTag(const std::string& tagName);
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// Check if tag is superscript
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static bool isSuperscriptTag(const std::string& tagName);
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// Check if tag is list item
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static bool isListItemTag(const std::string& tagName);
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// Check if tag starts ordered list
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static bool isOrderedListTag(const std::string& tagName);
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};
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