lib/output/conrefs.js


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var path = require('path');

var Output = require('./base');
var Git = require('../utils/git');
var fs = require('../utils/fs');
var pathUtil = require('../utils/path');

/*
Middleware for output to resolve git conrefs
*/

var ConrefsLoader = Output.createMixin(function() {
    this.git = new Git();
});

// Read a template by its source URL
ConrefsLoader.prototype.onGetTemplate = function(sourceURL) {
    var that = this;

    return this.git.resolve(sourceURL)
    .then(function(filepath) {
        // Is local file
        if (!filepath) {
            filepath = that.book.resolve(sourceURL);
        } else {
            that.book.log.debug.ln('resolve from git', sourceURL, 'to', filepath);
        }

        //  Read file from absolute path
        return fs.readFile(filepath)
        .then(function(source) {
            return {
                src: source.toString('utf8'),
                path: filepath
            };
        });
    });
};

// Generate a source URL for a template
ConrefsLoader.prototype.onResolveTemplate = function(from, to) {
    // If origin is in the book, we enforce result file to be in the book
    if (this.book.isInBook(from)) {
        return this.book.resolve(
            this.book.relative(path.dirname(from)),
            to
        );
    }

    // If origin is in a git repository, we resolve file in the git repository
    var gitRoot = this.git.resolveRoot(from);
    if (gitRoot) {
        return pathUtil.resolveInRoot(gitRoot, to);
    }

    // If origin is not in the book (include from a git content ref)
    return path.resolve(path.dirname(from), to);
};

module.exports = ConrefsLoader;