$ show unidoc/unioffice
UniOffice is a commercial Go library for reading, writing, and converting Office Open XML (OOXML) documents, including Word (.docx), Excel (.xlsx), and PowerPoint (.pptx) formats. It provides a high-level API for document manipulation, supporting features such as text formatting, tables, images, charts, animations, ActiveX controls, digital ink, and 3D models. The library also includes conversion to PDF via the UniPDF dependency. Architecturally, the library is layered: low-level schema types auto-generated from OOXML schemas handle XML marshalling/unmarshalling and validation; a middle layer of wrapper structs (e.g., Document, Spreadsheet, Presentation) provides a user-friendly interface; and conversion utilities transform documents to PDF. Key entry points include the main module (unioffice.go) for namespace handling and document type detection, common/common.go for core types like DocBase and ContentTypes, and the document/spreadsheet/presentation modules for specific operations. Data flows involve reading a ZIP package, parsing XML into schema types, manipulating via the high-level API, and writing back. The library relies on external dependencies such as unipdf (PDF generation), unichart (chart rendering), unitype (font parsing), and others for encryption and image processing. It requires a license key and uses obfuscated generated code to protect intellectual property. Despite the obfuscation, the library contains several well-designed, reusable components such as a storage abstraction, logger interface, wildcard matching, natural sort, measurement conversions, color parsing, MS-CFB binary format reader/writer, and an Excel number format engine. These components are self-contained and could be extracted for use in other projects.
The LLM identified 7 files worth highlighting for reuse:
Defines a storage interface for temporary data with disk and memory implementations. Demonstrates the strategy pattern, allowing callers to swap storage backends without changing consuming code. The interface is minimal and self-contained, making it easy to extract into any project needing temporary storage.
Provides wildcard pattern matching (similar to glob) with Match and Index functions. The implementation is efficient and handles common wildcard characters. It is a standalone utility that can be reused in any application requiring pattern-based string matching.
Implements merge sort and natural sort (human-friendly ordering of strings with numbers). Natural sort is non-trivial and useful for file browsers, data tables, etc. The module is self-contained and can be extracted for use in other Go projects.
Defines a Distance type with constants and conversion functions between EMU, twips, points, inches, centimeters, and more. It is a well-designed value object that encapsulates unit conversions, ensuring consistency across the codebase. Reusable in any project dealing with measurements.
Provides a Color type with 140+ named colors, RGB/RGBA construction, hex parsing, and string output. It is a self-contained value object that can be extracted and used in any application requiring color representation and manipulation.
Implements a reader/writer for the Microsoft Compound File Binary (MS-CFB) format, used by older .doc, .xls, .ppt files. Handles FAT, DIFAT, mini streams, and provides streaming and seeking. This is a complex binary format parser that can be reused in any project needing to access legacy Office files.
Parses Excel number format strings and formats numbers, dates, times, and text accordingly. Supports conditional sections, fractions, exponents, and date/time patterns. This is a standalone engine that can be extracted for use in any application requiring Excel-compatible number formatting.