Quentin
3271fee5cc
服务：Spring Boot 3.2 + docx4j 8.3.9，POST /api/v3/server_office_file/file/parse
接受 .docx，返回 HTML（公式 → LaTeX，图片 → RustFS 外链）
公式支持三类来源：
- OMML（Word 2007+ 公式） → Python omml_mathml2latex
- MathType OLE 对象 → Ruby mathtype2mathml → MathML → LaTeX
- Word EQ 域（老教辅主力） → EqToLatexUtil（本次新增）
本次改动：
1. 新增 java-svc/.../core/EqToLatexUtil.java：
移植自 jby backend-services office-core，EQ 语法 → LaTeX
（\f→\dfrac、\r→\sqrt、\i→\int/\sum/\prod、\s→^{}/_{}、\b→\left\right、
\a→array、\x→\boxed/\overline、\o\al 堆叠、圈码、化学符号、极限、连等式）
品牌标记 JBYU* → WPU*，与采集端一致
2. CtoMathFinder：接上 EQ 分支（原为 not-ported 桩），域代码经
EqToLatexUtil.convert 转 LaTeX 写入 eqLatexMap（WPEQNUM 占位符）
3. WordParseUtil.dealPlaceholder：EQ 的 LaTeX 同样加 \( \) 包裹
（原先因 WPEQNUM 例外不加包裹，前端/MathJax 不渲染）
修前症状：教辅 Word 里分式/方程组/上下标整段丢失（如 {−1/3, 1} 变成 {－，1}）
修后实测：46 份教辅 2908 处 EQ 域全部还原，公式总数 2954 处、零未包裹残留
安全：application.yml（含 RustFS 密钥）不入库，提供 application.yml.example；
OssService 的 @Value 默认密钥已清空
86 lines
2.4 KiB
Python
86 lines
2.4 KiB
Python
r"""
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Visitor for <ms> (string literal) MathML elements.
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The <ms> element represents a string literal, typically displayed with
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surrounding quotes. It's used for text that should be treated as a literal
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string rather than mathematical notation.
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In LaTeX conversion, ms is converted to \text{} with quotes, similar to mtext.
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"""
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from lxml import etree as ET
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from ..core.interfaces import Visitor, Strategy
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from ..utils import local_name as _local, text_content as _text_content
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class MsVisitor(Visitor):
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r"""
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Handles <ms> (string literal) MathML elements.
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Converts string literals to LaTeX \text{} with optional quotes.
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Examples:
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Simple string:
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<ms>hello</ms>
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→ \text{"hello"}
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String without lquote/rquote attributes:
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<ms lquote="" rquote="">world</ms>
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→ \text{world}
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Custom quotes:
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<ms lquote="[" rquote="]">text</ms>
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→ \text{[text]}
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Empty string:
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<ms></ms>
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→ \text{""}
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Note:
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Default quotes are double quotes (") unless overridden by
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lquote and rquote attributes.
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"""
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def __init__(self, strategy: Strategy):
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"""Initialize the Ms visitor."""
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super().__init__(strategy)
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def visit(self, node: ET.Element) -> str:
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r"""
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Convert <ms> element to LaTeX \text{} with quotes.
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Args:
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node: The <ms> element to convert
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Returns:
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LaTeX string with \text{...} and quotes
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Raises:
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ValueError: If node is not a <ms> element
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"""
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if not self.can_handle(node):
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raise ValueError(f"MsVisitor cannot handle element '{node.tag}'")
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# Get quote attributes (default to double quotes)
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lquote = node.get("lquote", '"')
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rquote = node.get("rquote", '"')
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# Get text content
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content = _text_content(node)
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# Wrap in \text{} with quotes
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return f"\\text{{{lquote}{content}{rquote}}}"
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def can_handle(self, node: ET.Element) -> bool:
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"""Check if this visitor can handle the given node."""
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return _local(node.tag) == 'ms'
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@property
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def element_name(self) -> str:
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"""Get the element name this visitor handles."""
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return 'ms'
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def __repr__(self) -> str:
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"""String representation for debugging."""
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return f"MsVisitor(strategy={self.strategy.name})"
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