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
66 lines
2.5 KiB
Python
66 lines
2.5 KiB
Python
"""
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Operator and symbol set definitions for MathML to LaTeX conversion.
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This module provides:
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- Mathematical symbol sets for symbol detection
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- Summation symbol mappings
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- Font to LaTeX command mappings
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- Large operator definitions (Unicode versions)
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"""
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# Mathematical symbol set for symbol detection
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MATH_SYMBOLS_SET = {
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"↑", "↓", "→", "←", "↔", "×", "⋅", "·", "÷", "∕", "−", # Added U+2212 MINUS SIGN
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"∩", "∪", "⊂", "⊃", "⊆", "⊇", "∈", "∉", "∋", "∌",
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"≤", "≥", "≠", "≈", "≅", "≡", "≢", "∼", "≃", "≄",
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"≜", "≝", "≞", "≟", "≦", "≧", "≨", "≩", "≲", "≳", "≴", "≵", "≶", "≷", "≸", "≹",
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"≺", "≻", "⪯", "⪰", "∝", "⊥",
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"∥", "∦", "±", "∓", "∗", "∘", "∙", "√", "∞",
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"∂", "∇", "∆", "∫", "∬", "∭", "∮", "∯", "∰",
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"∑", "∏", "∐", "⋃", "⋂", "⋁", "⋀", "⨁", "⨂", "⨄",
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"∀", "∃", "∄", "⊢", "⊣", "⊤", "⊥", "¬", "∧", "∨",
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"⟨", "⟩", "⌊", "⌋", "⌈", "⌉", "⏞", "⏟", "∠", "∁"
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}
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# Summation symbols for specific processing
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SUMMATION_SYMBOLS = {
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'∑': 'sum',
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'∏': 'prod',
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'∫': 'integral',
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'Σ': 'sum',
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'Π': 'prod'
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}
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# Font family to LaTeX command mapping
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FONT_TO_LATEX = {
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'Times New Roman': 'mathrm', # Roman/upright text
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'Times': 'mathrm', # Times font variant
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'Cambria Math': None, # Default math font (no special formatting)
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'Cambria': None, # Cambria variant
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'Arial': 'mathsf', # Sans-serif
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'Helvetica': 'mathsf', # Helvetica sans-serif
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'Courier New': 'mathtt', # Typewriter/monospace
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'Courier': 'mathtt', # Courier variant
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'Computer Modern': None, # LaTeX default math font
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'Latin Modern Math': None, # Modern LaTeX math font
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}
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# Large operators that should use \limits in display mode (LaTeX commands)
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LARGE_OPERATORS = [
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"\\sum", "\\prod", "\\int", "\\iint", "\\iiint", "\\oint",
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"\\bigcup", "\\bigcap", "\\bigvee", "\\bigwedge",
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"\\bigoplus", "\\bigotimes", "\\biguplus", "\\coprod",
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"\\lim", "\\limsup", "\\liminf", "\\sup", "\\inf",
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"\\max", "\\min"
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]
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# Unicode large operators for detection
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LARGE_OPERATORS_UNICODE = [
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"∑", "Σ", # Summation
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"∏", "Π", # Product
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"∫", # Integral
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"⋃", "⋂", # Union, Intersection
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"⋁", "⋀", # Logical OR, AND
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"⨁", "⨂", "⨄", # Direct sum, tensor product, union
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]
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