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tools: build all.html by combining generated HTML
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Combine the toc and api contents from the generated doc/api/*.html
files. This ensures that the single page version of the documentation
exactly matches the individual pages.

PR-URL: #21568
Fixes: #20100
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Vse Mozhet Byt <vsemozhetbyt@gmail.com>
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rubys authored and vsemozhetbyt committed Jul 2, 2018
1 parent a27b0a3 commit f85962f
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Showing 2 changed files with 79 additions and 2 deletions.
8 changes: 6 additions & 2 deletions Makefile
Original file line number Diff line number Diff line change
Expand Up @@ -650,12 +650,16 @@ gen-json = tools/doc/generate.js --format=json $< > $@
gen-html = tools/doc/generate.js --node-version=$(FULLVERSION) --format=html \
--analytics=$(DOCS_ANALYTICS) $< > $@

out/doc/api/%.json: doc/api/%.md
out/doc/api/%.json: doc/api/%.md tools/doc/generate.js tools/doc/json.js
$(call available-node, $(gen-json))

out/doc/api/%.html: doc/api/%.md
out/doc/api/%.html: doc/api/%.md tools/doc/generate.js tools/doc/html.js
$(call available-node, $(gen-html))

out/doc/api/all.html: $(filter-out out/doc/api/all.html, $(apidocs_html)) \
tools/doc/allhtml.js
$(call available-node, tools/doc/allhtml.js)

.PHONY: docopen
docopen: $(apidocs_html)
@$(PYTHON) -mwebbrowser file://$(PWD)/out/doc/api/all.html
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73 changes: 73 additions & 0 deletions tools/doc/allhtml.js
Original file line number Diff line number Diff line change
@@ -0,0 +1,73 @@
'use strict';

// Build all.html by combining the generated toc and apicontent from each
// of the generated html files.

const fs = require('fs');

const source = `${__dirname}/../../out/doc/api`;

// Get a list of generated API documents.
const htmlFiles = fs.readdirSync(source, 'utf8')
.filter((name) => name.includes('.html') && name !== 'all.html');

// Read the table of contents.
const toc = fs.readFileSync(source + '/_toc.html', 'utf8');

// Extract (and concatenate) the toc and apicontent from each document.
let contents = '';
let apicontent = '';

// Identify files that should be skipped. As files are processed, they
// are added to this list to prevent dupes.
const seen = {
'all.html': true,
'index.html': true
};

for (const link of toc.match(/<a.*?>/g)) {
const href = /href="(.*?)"/.exec(link)[1];
if (!htmlFiles.includes(href) || seen[href]) continue;
const data = fs.readFileSync(source + '/' + href, 'utf8');

// Split the doc.
const match = /(<\/ul>\s*)?<\/div>\s*<div id="apicontent">/.exec(data);

contents += data.slice(0, match.index)
.replace(/[\s\S]*?<div id="toc">\s*<h2>.*?<\/h2>\s*(<ul>\s*)?/, '');

apicontent += data.slice(match.index + match[0].length)
.replace(/(<\/div>\s*)*\s*<script[\s\S]*/, '')
.replace(/<a href="(\w[^#"]*)#/g, (match, href) => {
return htmlFiles.includes(href) ? '<a href="#' : match;
})
.trim() + '\n';

// Mark source as seen.
seen[href] = true;
}

// Replace various mentions of _toc with all.
let all = toc.replace(/_toc\.html/g, 'all.html')
.replace('_toc.json', 'all.json')
.replace('api-section-_toc', 'api-section-all')
.replace('data-id="_toc"', 'data-id="all"');

// Clean up the title.
all = all.replace(/<title>.*?\| /, '<title>');

// Insert the combined table of contents.
const tocStart = /<div id="toc">\s*<h2>.*?<\/h2>\s*/.exec(all);
all = all.slice(0, tocStart.index + tocStart[0].length) +
'<ul>\n' + contents + '</ul>\n' +
all.slice(tocStart.index + tocStart[0].length);

// Replace apicontent with the concatenated set of apicontents from each source.
const apiStart = /<div id="apicontent">\s*/.exec(all);
const apiEnd = /(\s*<\/div>)*\s*<script /.exec(all);
all = all.slice(0, apiStart.index + apiStart[0].length) +
apicontent +
all.slice(apiEnd.index);

// Write results.
fs.writeFileSync(source + '/all.html', all, 'utf8');

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