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Filename : publish.js
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/*global env: true */
'use strict';

var template = require('jsdoc/template'),
    fs = require('jsdoc/fs'),
    path = require('jsdoc/path'),
    taffy = require('taffydb').taffy,
    logger = require('jsdoc/util/logger'),
    helper = require('jsdoc/util/templateHelper'),
    htmlsafe = helper.htmlsafe,
    linkto = helper.linkto,
    resolveAuthorLinks = helper.resolveAuthorLinks,
    scopeToPunc = helper.scopeToPunc,
    hasOwnProp = Object.prototype.hasOwnProperty,
    data,
    view,
    outdir = env.opts.destination;

function find(spec) {
    return helper.find(data, spec);
}

function tutoriallink(tutorial) {
    return helper.toTutorial(tutorial, null, { tag: 'em', classname: 'disabled', prefix: 'Tutorial: ' });
}

function getAncestorLinks(doclet) {
    return helper.getAncestorLinks(data, doclet);
}

function getCategoryLink(className, cat) {
    return '<a href="' + className + '.html#' + cat.toLowerCase().replace(/[^a-z0-9]/gi, '-') + '-methods">' + cat + ' methods</a>';
}

function hashToLink(doclet, hash) {
    if ( !/^(#.+)/.test(hash) ) { return hash; }

    var url = helper.createLink(doclet);

    url = url.replace(/(#.+|$)/, hash);
    return '<a href="' + url + '">' + hash + '</a>';
}

function needsSignature(doclet) {
    var needsSig = false;

    // function and class definitions always get a signature
    if (doclet.kind === 'function' || doclet.kind === 'class') {
        needsSig = true;
    }
    // typedefs that contain functions get a signature, too
    else if (doclet.kind === 'typedef' && doclet.type && doclet.type.names &&
        doclet.type.names.length) {
        for (var i = 0, l = doclet.type.names.length; i < l; i++) {
            if (doclet.type.names[i].toLowerCase() === 'function') {
                needsSig = true;
                break;
            }
        }
    }

    return needsSig;
}

function addSignatureParams(f) {
    var params = helper.getSignatureParams(f, 'optional');

    f.signature = (f.signature || '') + '('+params.join(', ')+')';
}

function addSignatureReturns(f) {
    var returnTypes = helper.getSignatureReturns(f);

    f.signature = '<span class="signature">' + (f.signature || '') + '</span>' +
        '<span class="type-signature">' +
        (returnTypes && returnTypes.length ? ' &rarr; {' + returnTypes.join('|') + '}' : '') +
        '</span>';
}

function addSignatureTypes(f) {
    var types = helper.getSignatureTypes(f);

    f.signature = (f.signature || '') + '<span class="type-signature">'+(types.length? ' :'+types.join('|') : '')+'</span>';
}

function addAttribs(f) {
    var attribs = helper.getAttribs(f);

    f.attribs = '<span class="type-signature">' + htmlsafe(attribs.length ?
        // we want the template output to say 'abstract', not 'virtual'
        '<' + attribs.join(', ').replace('virtual', 'abstract') + '> ' : '') + '</span>';
}

function shortenPaths(files, commonPrefix) {
    Object.keys(files).forEach(function(file) {
        files[file].shortened = files[file].resolved.replace(commonPrefix, '')
            // always use forward slashes
            .replace(/\\/g, '/');
    });

    return files;
}

function getPathFromDoclet(doclet) {
    if (!doclet.meta) {
        return;
    }

    return doclet.meta.path && doclet.meta.path !== 'null' ?
        path.join(doclet.meta.path, doclet.meta.filename) :
        doclet.meta.filename;
}

function generate(title, docs, filename, resolveLinks) {
    resolveLinks = resolveLinks === false ? false : true;

    var docData = {
        title: title,
        docs: docs
    };

    var outpath = path.join(outdir, filename),
        html = view.render('container.tmpl', docData);

    if (resolveLinks) {
        html = helper.resolveLinks(html); // turn {@link foo} into <a href="foodoc.html">foo</a>
    }

    // Ensure <pre> tags have pretty print class
    html = html.replace(/<pre>/g, '<pre class="prettyprint">');

    fs.writeFileSync(outpath, html, 'utf8');
}

function generateSourceFiles(sourceFiles, encoding) {
    encoding = encoding || 'utf8';
    Object.keys(sourceFiles).forEach(function(file) {
        var source;
        // links are keyed to the shortened path in each doclet's `meta.shortpath` property
        var sourceOutfile = helper.getUniqueFilename(sourceFiles[file].shortened);
        helper.registerLink(sourceFiles[file].shortened, sourceOutfile);

        try {
            source = {
                kind: 'source',
                code: helper.htmlsafe( fs.readFileSync(sourceFiles[file].resolved, encoding) )
            };
        }
        catch(e) {
            logger.error('Error while generating source file %s: %s', file, e.message);
        }

        generate('Source: ' + sourceFiles[file].shortened, [source], sourceOutfile,
            false);
    });
}

/**
 * Look for classes or functions with the same name as modules (which indicates that the module
 * exports only that class or function), then attach the classes or functions to the `module`
 * property of the appropriate module doclets. The name of each class or function is also updated
 * for display purposes. This function mutates the original arrays.
 *
 * @private
 * @param {Array.<module:jsdoc/doclet.Doclet>} doclets - The array of classes and functions to
 * check.
 * @param {Array.<module:jsdoc/doclet.Doclet>} modules - The array of module doclets to search.
 */
function attachModuleSymbols(doclets, modules) {
    var symbols = {};

    // build a lookup table
    doclets.forEach(function(symbol) {
        symbols[symbol.longname] = symbol;
    });

    return modules.map(function(module) {
        if (symbols[module.longname]) {
            module.module = symbols[module.longname];
            module.module.name = module.module.name.replace('module:', 'require("') + '")';
        }
    });
}

function buildReadmeNav(readme) {
    var nav = '';

    var prevLevel = '0';
    nav += '<ul>';

    readme = readme.replace(/<h([23])>([^<]*)<\/h[23]>/g, function(match, level, title) {
        if (title.trim().length > 0) {
            var titlelink = title.toLowerCase().replace(/[^a-z]/g, '-');

            if (level === '2') {
                if (prevLevel === '2' || prevLevel === '3') {
                    nav += '</ul>';
                }

                nav += '<li><a href="index.html#' + titlelink + '">' + title + '</a></li><ul>';
            } else {
                nav += '<li><a href="index.html#' + titlelink + '">' + title + '</a></li>';
            }

            prevLevel = level;
            match = '<a name="' + titlelink + '"></a>' + match;
        }

        return match;
    });

    nav += '</ul></ul>';
    return { nav: nav, readme: readme };
}

/**
 * Create the navigation sidebar.
 * @param {String} readmeNav The readme TOC
 * @param {object} members The members that will be used to create the sidebar.
 * @param {array<object>} members.classes
 * @param {array<object>} members.externals
 * @param {array<object>} members.globals
 * @param {array<object>} members.mixins
 * @param {array<object>} members.modules
 * @param {array<object>} members.namespaces
 * @param {array<object>} members.tutorials
 * @param {array<object>} members.events
 * @return {string} The HTML for the navigation sidebar.
 */
function buildNav(readmeNav, members) {
    var nav = '<h2><a href="index.html">Index</a></h2>' + readmeNav,
        seen = {},
        hasClassList = false,
        classNav = '',
        globalNav = '';



    if (members.modules.length) {
        nav += '<h3>Modules</h3><ul>';
        members.modules.forEach(function(m) {
            if ( !hasOwnProp.call(seen, m.longname) ) {
                nav += '<li>'+linkto(m.longname, m.name)+'</li>';
            }
            seen[m.longname] = true;
        });

        nav += '</ul>';
    }

    if (members.externals.length) {
        nav += '<h3>Externals</h3><ul>';
        members.externals.forEach(function(e) {
            if ( !hasOwnProp.call(seen, e.longname) ) {
                nav += '<li>'+linkto( e.longname, e.name.replace(/(^"|"$)/g, '') )+'</li>';
            }
            seen[e.longname] = true;
        });

        nav += '</ul>';
    }

    if (members.classes.length) {
        members.classes.forEach(function(c) {
            if ( !hasOwnProp.call(seen, c.longname) ) {
                classNav += '<li>'+linkto(c.longname, c.name)+'</li>';
                if (c.longname in members.categories) {
                    classNav += '<ul>' + members.categories[c.longname].reduce(function(nav, cat) {
                        return nav + '<li> ' + getCategoryLink(c.longname, cat) + '</li>';
                    }, '') + '</ul>';
                }
            }
            seen[c.longname] = true;
        });

        if (classNav !== '') {
            nav += '<h3>Classes</h3><ul>';
            nav += classNav;
            nav += '</ul>';
        }
    }

    /*if (members.events.length) {
        nav += '<h3>Events</h3><ul>';
        members.events.forEach(function(e) {
            if ( !hasOwnProp.call(seen, e.longname) ) {
                nav += '<li>'+linkto(e.longname, e.name)+'</li>';
            }
            seen[e.longname] = true;
        });

        nav += '</ul>';
    }*/

    if (members.namespaces.length) {
        nav += '<h3>Namespaces</h3><ul>';
        members.namespaces.forEach(function(n) {
            if ( !hasOwnProp.call(seen, n.longname) ) {
                nav += '<li>'+linkto(n.longname, n.name)+'</li>';
            }
            seen[n.longname] = true;
        });

        nav += '</ul>';
    }

    if (members.mixins.length) {
        nav += '<h3>Mixins</h3><ul>';
        members.mixins.forEach(function(m) {
            if ( !hasOwnProp.call(seen, m.longname) ) {
                nav += '<li>'+linkto(m.longname, m.name)+'</li>';
            }
            seen[m.longname] = true;
        });

        nav += '</ul>';
    }

    if (members.tutorials.length) {
        nav += '<h3>Tutorials</h3><ul>';
        members.tutorials.forEach(function(t) {
            nav += '<li>'+tutoriallink(t.name)+'</li>';
        });

        nav += '</ul>';
    }

    if (members.globals.length) {
        members.globals.forEach(function(g) {
            if ( g.kind !== 'typedef' && !hasOwnProp.call(seen, g.longname) ) {
                globalNav += '<li>' + linkto(g.longname, g.name) + '</li>';
            }
            seen[g.longname] = true;
        });

        if (!globalNav) {
            // turn the heading into a link so you can actually get to the global page
            nav += '<h3>' + linkto('global', 'Global') + '</h3>';
        }
        else {
            nav += '<h3>Global</h3><ul>' + globalNav + '</ul>';
        }
    }

    return nav;
}

/**
    @param {TAFFY} taffyData See <http://taffydb.com/>.
    @param {object} opts
    @param {Tutorial} tutorials
 */
exports.publish = function(taffyData, opts, tutorials) {
    data = taffyData;

    var conf = env.conf.templates || {};
    conf['default'] = conf['default'] || {};

    var templatePath = opts.template;
    view = new template.Template(templatePath + '/tmpl');

    // claim some special filenames in advance, so the All-Powerful Overseer of Filename Uniqueness
    // doesn't try to hand them out later
    var indexUrl = helper.getUniqueFilename('index');
    // don't call registerLink() on this one! 'index' is also a valid longname

    var globalUrl = helper.getUniqueFilename('global');
    helper.registerLink('global', globalUrl);

    // set up templating
    view.layout = conf['default'].layoutFile ?
        path.getResourcePath(path.dirname(conf['default'].layoutFile),
            path.basename(conf['default'].layoutFile) ) :
        'layout.tmpl';

    // set up tutorials for helper
    helper.setTutorials(tutorials);

    data = helper.prune(data);
    data.sort('longname, version, since');
    helper.addEventListeners(data);

    var sourceFiles = {};
    var sourceFilePaths = [];
    data().each(function(doclet) {
         doclet.attribs = '';

        if (doclet.examples) {
            doclet.examples = doclet.examples.map(function(example) {
                var caption, code;

                if (example.match(/^\s*<caption>([\s\S]+?)<\/caption>(\s*[\n\r])([\s\S]+)$/i)) {
                    caption = RegExp.$1;
                    code    = RegExp.$3;
                }

                return {
                    caption: caption || '',
                    code: code || example
                };
            });
        }
        if (doclet.see) {
            doclet.see.forEach(function(seeItem, i) {
                doclet.see[i] = hashToLink(doclet, seeItem);
            });
        }

        // build a list of source files
        var sourcePath;
        if (doclet.meta) {
            sourcePath = getPathFromDoclet(doclet);
            sourceFiles[sourcePath] = {
                resolved: sourcePath,
                shortened: null
            };
            if (sourceFilePaths.indexOf(sourcePath) === -1) {
                sourceFilePaths.push(sourcePath);
            }
        }
    });

    // update outdir if necessary, then create outdir
    var packageInfo = ( find({kind: 'package'}) || [] ) [0];
    if (packageInfo && packageInfo.name) {
        outdir = path.join(outdir, packageInfo.name, packageInfo.version);
    }
    fs.mkPath(outdir);

    // copy the template's static files to outdir
    var fromDir = path.join(templatePath, 'static');
    var staticFiles = fs.ls(fromDir, 3);

    staticFiles.forEach(function(fileName) {
        var toDir = fs.toDir( fileName.replace(fromDir, outdir) );
        fs.mkPath(toDir);
        fs.copyFileSync(fileName, toDir);
    });

    // copy user-specified static files to outdir
    var staticFilePaths;
    var staticFileFilter;
    var staticFileScanner;
    if (conf['default'].staticFiles) {
        staticFilePaths = conf['default'].staticFiles.paths || [];
        staticFileFilter = new (require('jsdoc/src/filter')).Filter(conf['default'].staticFiles);
        staticFileScanner = new (require('jsdoc/src/scanner')).Scanner();

        staticFilePaths.forEach(function(filePath) {
            var extraStaticFiles = staticFileScanner.scan([filePath], 10, staticFileFilter);

            extraStaticFiles.forEach(function(fileName) {
                var sourcePath = fs.toDir(filePath);
                var toDir = fs.toDir( fileName.replace(sourcePath, outdir) );
                fs.mkPath(toDir);
                fs.copyFileSync(fileName, toDir);
            });
        });
    }

    if (sourceFilePaths.length) {
        sourceFiles = shortenPaths( sourceFiles, path.commonPrefix(sourceFilePaths) );
    }
    data().each(function(doclet) {
        var url = helper.createLink(doclet);
        helper.registerLink(doclet.longname, url);

        // add a shortened version of the full path
        var docletPath;
        if (doclet.meta) {
            docletPath = getPathFromDoclet(doclet);
            docletPath = sourceFiles[docletPath].shortened;
            if (docletPath) {
                doclet.meta.shortpath = docletPath;
            }
        }
    });

    data().each(function(doclet) {
        var url = helper.longnameToUrl[doclet.longname];

        if (url.indexOf('#') > -1) {
            doclet.id = helper.longnameToUrl[doclet.longname].split(/#/).pop();
        }
        else {
            doclet.id = doclet.name;
        }

        if ( needsSignature(doclet) ) {
            addSignatureParams(doclet);
            addSignatureReturns(doclet);
            addAttribs(doclet);
        }
    });

    // do this after the urls have all been generated
    data().each(function(doclet) {
        doclet.ancestors = getAncestorLinks(doclet);

        if (doclet.kind === 'member') {
            addSignatureTypes(doclet);
            addAttribs(doclet);
        }

        if (doclet.kind === 'constant') {
            addSignatureTypes(doclet);
            addAttribs(doclet);
            doclet.kind = 'member';
        }
    });

    var members = helper.getMembers(data);
    members.tutorials = tutorials.children;
    members.categories = data('method').get().reduce(function(cats, method) {
        if (!(method.memberof in cats)) {
            cats[method.memberof] = [];
        }

        var cat = method.category || 'Other';
        if (cats[method.memberof].indexOf(cat) === -1) {
            cats[method.memberof].push(cat);
            cats[method.memberof] = cats[method.memberof].sort();
        }

        return cats;
    }, {});

    // output pretty-printed source files by default
    var outputSourceFiles = conf['default'] && conf['default'].outputSourceFiles !== false ? true :
        false;

    // add template helpers
    view.find = find;
    view.linkto = linkto;
    view.resolveAuthorLinks = resolveAuthorLinks;
    view.tutoriallink = tutoriallink;
    view.htmlsafe = htmlsafe;
    view.outputSourceFiles = outputSourceFiles;

    // Build readme nav
    var readmeNav = buildReadmeNav(opts.readme);
    opts.readme = readmeNav.readme;

    // once for all
    view.nav = buildNav(readmeNav.nav, members);
    attachModuleSymbols( find({ kind: ['class', 'function'], longname: {left: 'module:'} }),
        members.modules );

    // generate the pretty-printed source files first so other pages can link to them
    if (outputSourceFiles) {
        generateSourceFiles(sourceFiles, opts.encoding);
    }

    if (members.globals.length) { generate('Global', [{kind: 'globalobj'}], globalUrl); }

    // index page displays information from package.json and lists files
    var files = find({kind: 'file'}),
        packages = find({kind: 'package'});

    generate('Index',
        packages.concat(
            [{kind: 'mainpage', readme: opts.readme, longname: (opts.mainpagetitle) ? opts.mainpagetitle : 'Main Page'}]
        ).concat(files),
    indexUrl);

    // set up the lists that we'll use to generate pages
    var classes = taffy(members.classes);
    var modules = taffy(members.modules);
    var namespaces = taffy(members.namespaces);
    var mixins = taffy(members.mixins);
    var externals = taffy(members.externals);

    Object.keys(helper.longnameToUrl).forEach(function(longname) {
        var myClasses = helper.find(classes, {longname: longname});
        if (myClasses.length) {
            generate('Class: ' + myClasses[0].name, myClasses, helper.longnameToUrl[longname]);
        }

        var myModules = helper.find(modules, {longname: longname});
        if (myModules.length) {
            generate('Module: ' + myModules[0].name, myModules, helper.longnameToUrl[longname]);
        }

        var myNamespaces = helper.find(namespaces, {longname: longname});
        if (myNamespaces.length) {
            generate('Namespace: ' + myNamespaces[0].name, myNamespaces, helper.longnameToUrl[longname]);
        }

        var myMixins = helper.find(mixins, {longname: longname});
        if (myMixins.length) {
            generate('Mixin: ' + myMixins[0].name, myMixins, helper.longnameToUrl[longname]);
        }

        var myExternals = helper.find(externals, {longname: longname});
        if (myExternals.length) {
            generate('External: ' + myExternals[0].name, myExternals, helper.longnameToUrl[longname]);
        }
    });

    // TODO: move the tutorial functions to templateHelper.js
    function generateTutorial(title, tutorial, filename) {
        var tutorialData = {
            title: title,
            header: tutorial.title,
            content: tutorial.parse(),
            children: tutorial.children
        };

        var tutorialPath = path.join(outdir, filename),
            html = view.render('tutorial.tmpl', tutorialData);

        // yes, you can use {@link} in tutorials too!
        html = helper.resolveLinks(html); // turn {@link foo} into <a href="foodoc.html">foo</a>

        fs.writeFileSync(tutorialPath, html, 'utf8');
    }

    // tutorials can have only one parent so there is no risk for loops
    function saveChildren(node) {
        node.children.forEach(function(child) {
            generateTutorial('Tutorial: ' + child.title, child, helper.tutorialToUrl(child.name));
            saveChildren(child);
        });
    }
    saveChildren(tutorials);
};