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var _ = require('lodash');
/*
This class is extended by gitbook-markdown and gitbook-asciidoc
to generate back markdown/asciidoc from GitBook metadata.
*/
function ToText(markup) {
_.extend(this, markup || {});
_.bindAll(this);
};
// Break line
ToText.prototype.onBL = function() {
return '\n';
};
ToText.prototype.onText = function(text) {
return text;
};
ToText.prototype.onHR = function() {
return '<hr />';
};
// ---- TITLES
ToText.prototype.onTitleStart = function(level) {
return '<h'+level+'>';
};
ToText.prototype.onTitleEnd = function(level) {
return '</h'+level+'>';
};
// ---- PARAGRAPHS / SECTIONS
ToText.prototype.onParagraphStart = function() {
return '<p>';
};
ToText.prototype.onParagraphEnd = function() {
return '</p>';
};
ToText.prototype.onSection = function() {
return this.onBL();
};
// ---- LINKS
ToText.prototype.onLinkStart = function(href) {
return '<a href="' + href + '">';
};
ToText.prototype.onLinkEnd = function(href) {
return '</a>';
};
// ---- LISTS
ToText.prototype.onListItemStart = function(level) {
return this._spaces((level + 1) * 4) + '<li>';
};
ToText.prototype.onListItemEnd = function(level) {
return this._spaces((level + 1) * 4) + '</li>' + this.onBL();
};
ToText.prototype.onListStart = function(level) {
return this._spaces(level * 4) + '<ul>' + this.onBL();
};
ToText.prototype.onListEnd = function(level) {
return this._spaces(level * 4) + '</ul>' + this.onBL();
};
// ------ LANGS
ToText.prototype.langs = function(languages) {
var content = '';
content += this.onTitleStart(1) + this.onText('Languages') + this.onTitleEnd(1);
content += this.onSection();
content += this._summaryArticles(languages);
return content;
};
// ------ GLOSSARY
ToText.prototype.glossary = function(glossary) {
var content = '';
content += this.onTitleStart(1) + this.onText('Glossary') + this.onTitleEnd(1);
content += this.onSection();
_.each(glossary, function(entry) {
content += this.onTitleStart(2) + this.onText(entry.name) + this.onTitleEnd(2);
content += this.onParagraphStart();
content += this.onText(entry.description);
content += this.onParagraphEnd();
content += this.onSection();
}, this);
return content;
};
// ------ SUMMARY
ToText.prototype._summaryArticle = function(article, level) {
var content = '';
content += this.onListItemStart(level);
if (article.ref) content += this.onLinkStart(article.ref)
content += this.onText(article.title)
if (article.ref) content += this.onLinkEnd(article.ref);
content += this.onBL();
if (article.articles && article.articles.length > 0) {
content += this._summaryArticles(article.articles, level + 1);
}
content += this.onListItemEnd(level);
return content;
};
ToText.prototype._summaryArticles = function(articles, level) {
var content = '';
level = level || 0;
content += this.onListStart(level);
_.each(articles, function(article) {
content += this._summaryArticle(article, level);
}, this);
content += this.onListEnd(level);
return content;
};
ToText.prototype._summaryPart = function(part) {
var content = '';
if (part.title) content += this.onTitleStart(2) + this.onText(part.title) + this.onTitleEnd(2);
content += this._summaryArticles(part.articles);
return content;
};
ToText.prototype.summary = function(summary) {
var content = '';
content += this.onTitleStart(1) + this.onText('Summary') + this.onTitleEnd(1);
content += this.onSection();
_.each(summary.parts, function(part, i) {
var next = summary.parts[i + 1];
content += this._summaryPart(part);
if (next && !next.title) {
content += this.onBL() + this.onHR() + this.onBL();
} else {
content += this.onSection();
}
}, this);
return content;
};
// ---- Utilities
ToText.prototype._spaces = function(n, s) {
return Array(n + 1).join(s || ' ');
}
module.exports = ToText;
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