FM / static-module

/var/www/greso.tech/server/nsm/node_modules/static-module/

/var/www/greso.tech/server/nsm/node_modules/static-module

Name	Size	Mode	Actions
example/	-	0755	rm
node_modules/	-	0755	rm
test/	-	0755	rm
.travis.yml	48	0644	edit dl rm
index.js	12420	0644	edit dl rm
LICENSE	1073	0644	edit dl rm
package.json	994	0644	edit dl rm
readme.markdown	2525	0644	edit dl rm

Edit: /var/www/greso.tech/server/nsm/node_modules/static-module/index.js (12420B)

var fs = require('fs');
var path = require('path');

var through = require('through2');
var Readable = require('readable-stream').Readable;

var concat = require('concat-stream');
var duplexer = require('duplexer2');
var falafel = require('falafel');
var unparse = require('escodegen').generate;
var inspect = require('object-inspect');
var evaluate = require('static-eval');
var copy = require('shallow-copy');
var has = require('has');

module.exports = function parse (modules, opts) {
    if (!opts) opts = {};
    var vars = opts.vars || {};
    var varNames = opts.varNames || {};
    var varModules = opts.varModules || {};
    var skip = opts.skip || {};
    var skipOffset = opts.skipOffset || 0;
    var updates = [];
    
    var output = through();
    var body;
    return duplexer(concat(function (buf) {
        try {
            body = buf.toString('utf8').replace(/^#!/, '//#!');
            falafel(body, { ecmaVersion: 8 }, walk);
        }
        catch (err) { return error(err) }
        finish(body);
    }), output);
    
    function finish (src) {
        var pos = 0;
        src = String(src);
        
        (function next () {
            if (updates.length === 0) return done();
            var s = updates.shift();

output.push(src.slice(pos, s.start));
            pos = s.start + s.offset;

s.stream.pipe(output, { end: false });
            s.stream.on('end', next);
        })();
        
        function done () {
            output.push(src.slice(pos));
            output.push(null);
        }
    }
    
    function error (msg) {
        var err = typeof msg === 'string' ? new Error(msg) : msg;
        output.emit('error', err);
    }
    
    function walk (node) {
        var isreq = isRequire(node);
        var isreqm = false, isreqv = false, reqid;
        if (isreq) {
            reqid = node.arguments[0].value;
            isreqm = has(modules, reqid);
            isreqv = has(varModules, reqid);
        }
        
        if (isreqv && node.parent.type === 'VariableDeclarator'
        && node.parent.id.type === 'Identifier') {
            vars[node.parent.id.name] = varModules[reqid];
        }
        else if (isreqv && node.parent.type === 'AssignmentExpression'
        && node.parent.left.type === 'Identifier') {
            vars[node.parent.left.name] = varModules[reqid];
        }
        else if (isreqv && node.parent.type === 'MemberExpression'
        && isStaticProperty(node.parent.property)
        && node.parent.parent.type === 'VariableDeclarator'
        && node.parent.parent.id.type === 'Identifier') {
            var v = varModules[reqid][resolveProperty(node.parent.property)];
            vars[node.parent.parent.id.name] = v;
        }
        else if (isreqv && node.parent.type === 'MemberExpression'
        && node.parent.property.type === 'Identifier') {
            //vars[node.parent.parent.id.name] = varModules[reqid];
        }
        else if (isreqv && node.parent.type === 'CallExpression') {
            //
        }
        
        if (isreqm && node.parent.type === 'VariableDeclarator'
        && node.parent.id.type === 'Identifier') {
            varNames[node.parent.id.name] = reqid;
            var decs = node.parent.parent.declarations;
            var ix = decs.indexOf(node.parent);
            var dec;
            if (ix >= 0) {
                dec = decs[ix];
                decs.splice(ix, 1);
            }
            
            if (decs.length) {
                var src = unparse(node.parent.parent);
                updates.push({
                    start: node.parent.parent.start,
                    offset: node.parent.parent.end - node.parent.parent.start,
                    stream: st('var ')
                });
                decs.forEach(function (d, i) {
                    var key = (d.start + skipOffset)
                        + ',' + (d.end + skipOffset)
                    ;
                    skip[key] = true;
                    
                    var s = parse(modules, {
                        skip: skip,
                        skipOffset: skipOffset + (d.init ? d.init.start : 0),
                        vars: vars,
                        varNames: varNames
                    });
                    var up = {
                        start: node.parent.parent.end,
                        offset: 0,
                        stream: s
                    };
                    updates.push(up);
                    if (i < decs.length - 1) {
                        var comma;
                        if (i === ix - 1) {
                            comma = body.slice(d.end, dec.start);
                        }
                        else comma = body.slice(d.end, decs[i+1].start);
                        updates.push({
                            start: node.parent.parent.end,
                            offset: 0,
                            stream: st(comma)
                        });
                    }
                    else {
                        updates.push({
                            start: node.parent.parent.end,
                            offset: 0,
                            stream: st(';')
                        });
                    }
                    s.end(unparse(d));
                });
            }
            else {
                updates.push({
                    start: node.parent.parent.start,
                    offset: node.parent.parent.end - node.parent.parent.start,
                    stream: st()
                });
            }
        }
        else if (isreqm && node.parent.type === 'AssignmentExpression'
        && node.parent.left.type === 'Identifier') {
            varNames[node.parent.left.name] = reqid;
            var cur = node.parent.parent;
            if (cur.type === 'SequenceExpression') {
                var ex = cur.expressions;
                var ix = ex.indexOf(node.parent);
                if (ix >= 0) ex.splice(ix, 1);
                updates.push({
                    start: node.parent.parent.start,
                    offset: node.parent.parent.end - node.parent.parent.start,
                    stream: st(unparse(node.parent.parent))
                });
            }
            else {
                updates.push({
                    start: node.parent.parent.start,
                    offset: node.parent.parent.end - node.parent.parent.start,
                    stream: st()
                });
            }
        }
        else if (isreqm && node.parent.type === 'MemberExpression'
        && isStaticProperty(node.parent.property)
        && node.parent.parent.type === 'VariableDeclarator'
        && node.parent.parent.id.type === 'Identifier') {
            varNames[node.parent.parent.id.name] = [
                reqid, resolveProperty(node.parent.property)
            ];
            var decNode = node.parent.parent.parent;
            var decs = decNode.declarations;
            var ix = decs.indexOf(node.parent.parent);
            if (ix >= 0) decs.splice(ix, 1);
            
            updates.push({
                start: decNode.start,
                offset: decNode.end - decNode.start,
                stream: decs.length ? st(unparse(decNode)) : st()
            });
        }
        else if (isreqm && node.parent.type === 'MemberExpression'
        && isStaticProperty(node.parent.property)) {
            var name = resolveProperty(node.parent.property);
            var cur = copy(node.parent.parent);
            cur.callee = copy(node.parent.property);
            cur.callee.parent = cur;
            traverse(cur.callee, modules[reqid][name]);
        }
        else if (isreqm && node.parent.type === 'CallExpression') {
            var cur = copy(node.parent);
            var iname = Math.pow(16,8) * Math.random();
            cur.callee = {
                type: 'Identifier',
                name: '_' + Math.floor(iname).toString(16),
                parent: cur
            };
            traverse(cur.callee, modules[reqid]);
        }
        
        if (node.type === 'Identifier' && has(varNames, node.name)) {
            var vn = varNames[node.name];
            if (Array.isArray(vn)) {
                traverse(node, modules[vn[0]][vn[1]]);
            }
            else traverse(node, modules[vn]);
        }
    }
    
    function traverse (node, val) {
        for (var p = node; p; p = p.parent) {
            if (p.start === undefined || p.end === undefined) continue;
            var key = (p.start + skipOffset)
                + ',' + (p.end + skipOffset)
            ;
            if (skip[key]) {
                skip[key] = false;
                return;
            }
        }
        
        if (skip[key]) {
            skip[key] = false;
            return;
        }
        
        if (node.parent.type === 'CallExpression') {
            if (typeof val !== 'function') {
                return error(
                    'tried to statically call ' + inspect(val)
                    + ' as a function'
                );
            }

var xvars = copy(vars);
            xvars[node.name] = val;

function isRequire (node) {
    var c = node.callee;
    return c
        && node.type === 'CallExpression'
        && c.type === 'Identifier'
        && c.name === 'require'
    ;
}

function isStream (s) {
    return s && typeof s === 'object' && typeof s.pipe === 'function';
}

function wrapStream (s) {
    if (typeof s.read === 'function') return s
    else return (new Readable).wrap(s)
}

function isStaticProperty(node) {
    return node.type === 'Identifier' || node.type === 'Literal';
}

function resolveProperty(node) {
    return node.type === 'Identifier' ? node.name : node.value;
}

function st (msg) {
    var r = new Readable;
    r._read = function () {};
    if (msg != null) r.push(msg);
    r.push(null);
    return r;
}

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