How w3c/svgwg works
<explanation>
1. Identify the project type and purpose
- This is a documentation/specification repository for the W3C SVG Working Group (“svgwg”).
- It contains source artifacts (XML, .bs, .html snippets, styles, scripts) and a build/publish toolchain that renders those sources into HTML specifications.
2. Analyze the file structure
- Top‐level:
• .github, CONTRIBUTING.md, LICENSE.md, README.md – meta and governance.
• index.html – top‐level landing page.
• master/ – the main “SVG2” spec output (HTML pages, CSS, JS, images).
• specs/ – sub‐specifications (animations, integration, etc.) each with their own sources, style folders, Makefiles.
• tools/ – build scripts (Python, Perl) and “publish” Node.js pipeline (config, JS modules, node_modules).
• Makefile and tools/spec.mk – orchestrate builds via make.
• w3c.json – site configuration for publishing.
3. Examine the README
- Describes the high‐level intent: automatic rebuilds of SVG2 on pushes, links to working drafts, contribution guidelines.
- No detailed architecture section, but clearly implies a static‐site generator style pipeline.
4. How to draw the system design diagram
a. Main components
1. Source Content Repositories
– Markdown/BS/XML/HTML fragments under master/ and each specs/ subdirectory.
– Style assets under style/ directories.
2. Build & Publish Pipeline
– Makefile & tools/spec.mk invoke Python scripts (tools/build.py), Perl stabilizer, and Node.js publish modules under tools/publish/.
– Respec or other templating invoked to transform sources into final HTML.
3. Output Artifacts
– Fully rendered HTML in master/ and each specs/*/master/ output folders.
– CSS/JS assets copied or generated alongside.
4. Hosting / Delivery
– GitHub Pages or W3C’s static server (uses w3c.json for configuration).
– Continuous Integration (e.g., GitHub Actions triggers rebuilds).
b. Relationships & interactions
- Developers push to GitHub → triggers CI build → make calls into tools/ → transforms source → commits HTML outputs → Deployment to hosting.
- Build pipeline reads config (w3c.json, tools/publish/config.js), merges in namespaces, maturities, definitions, then writes to disk.
- Style assets feed into HTML templates.
- Images referenced by specs are static resources served alongside.
c. Architectural patterns & design principles
- “Source‐Driven Documents”: keep human‐readable source in XML/BS/Markdown, auto‐generate published HTML.
- Modular spec structure: each spec has its own folder with independent Makefile, easing parallel development.
- Reuse of shared style sheets and JS functions (expanders.js, fixup.js) for consistency.
d. Key technologies, frameworks, libraries
- Python (tools/build.py) and Perl (stabilizer.pl) for preprocessing.
- Node.js for the “publish” pipeline, including modules under tools/publish/node_modules/.
- Respec or a custom XSL/XML pipeline for spec transformation.
- GNU Make for orchestration.
- Standard web stack for final artifacts (HTML5, CSS, JavaScript).
5. Tailoring the diagram to this project type
- Emphasize the “source → build → publish → host” flow rather than client‑server interactions.
- Show parallel spec branches under specs/, each with its own mini‑pipeline feeding back to a unified hosting domain.
- Highlight how shared tools and configs centralize the build logic, while spec folders isolate content.
6. Diagram‐drawing guidelines
- Components as labeled boxes:
• Content Sources (master/, specs/*/src)
• Build Orchestration (Makefile, spec.mk)
• Processing Engines (Python/Perl scripts, Node.js publish modules)
• Static Asset Store (styles/, images/)
• Output Artifacts (HTML directories)
• Hosting & CI (GitHub Actions, GitHub Pages, W3C server)
- Use directional arrows:
• From Sources → Build Orchestration → Processing Engines → Outputs → Hosting
• From shared assets → Processing Engines and Output folders
- Color‑code or shape‑code:
• Green for source content
• Blue for processing/build tools
• Orange for outputs
• Purple for external services (CI, hosting)
7. Final notes
- Be very detailed: show each major script, Makefile, and folder as a node if space permits.
- Capture the independence of each spec while also showing the centralization of the publish pipeline.
- This separation clarifies responsibilities: content authors edit sources; build engineers maintain tools; ops manage hosting.
</explanation>