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
99 lines
2.7 KiB
Python
99 lines
2.7 KiB
Python
r"""
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Visitor for <mtr> (table row) MathML elements.
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The <mtr> element represents a row in a table/matrix. It is a helper element
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that contains <mtd> (table cell) children.
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This visitor is primarily used by MtableVisitor to convert table rows.
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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
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class MtrVisitor(Visitor):
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r"""
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Handles <mtr> (table row) MathML elements.
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Converts table rows to LaTeX format with cells separated by & and
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terminated with \\.
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Examples:
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Simple row:
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<mtr><mtd><mn>1</mn></mtd><mtd><mn>2</mn></mtd></mtr>
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→ 1 & 2 \\
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Row with expressions:
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<mtr><mtd><mi>x</mi></mtd><mtd><mi>y</mi></mtd></mtr>
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→ x & y \\
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Single cell row:
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<mtr><mtd><mi>a</mi></mtd></mtr>
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→ a \\
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Empty row:
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<mtr></mtr>
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→ \\
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"""
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def __init__(self, strategy: Strategy):
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"""Initialize the Mtr 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 <mtr> element to LaTeX row.
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Args:
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node: The <mtr> element to convert
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Returns:
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LaTeX string with cells separated by & and terminated with \\
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Raises:
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ValueError: If node is not an <mtr> element
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"""
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if not self.can_handle(node):
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raise ValueError(f"MtrVisitor cannot handle element '{node.tag}'")
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# Convert all <mtd> children to cells
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cells = []
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for child in node:
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if _local(child.tag) == "mtd":
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cell_latex = self._convert_cell(child)
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cells.append(cell_latex)
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# Join cells with & and add row terminator
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if not cells:
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return "\\\\"
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return " & ".join(cells) + " \\\\"
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def _convert_cell(self, node: ET.Element) -> str:
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"""
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Convert a single <mtd> (table cell) element.
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Args:
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node: The <mtd> element
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Returns:
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LaTeX string for cell content
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"""
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# Use MtdVisitor for proper cell conversion
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from .mtd_visitor import MtdVisitor
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return MtdVisitor(self.strategy).visit(node)
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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) == 'mtr'
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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 'mtr'
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def __repr__(self) -> str:
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"""String representation for debugging."""
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return f"MtrVisitor(strategy={self.strategy.name})"
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