.mongorc.js

/*
 *
 * Mongo-Hacker
 * MongoDB Shell Enhancements for Hackers
 *
 * Tyler J. Brock - 2013
 *
 * http://tylerbrock.github.com/mongo-hacker
 *
 */

if (_isWindows()) {
    print("\nSorry! MongoDB Shell Enhancements for Hackers isn't compatible with Windows.\n");
}

if (typeof db !== 'undefined') {
    var current_version = parseFloat(db.serverBuildInfo().version).toFixed(2)

    if (current_version < 2.2) {
        print("Sorry! MongoDB Shell Enhancements for Hackers is only compatible with Mongo 2.2+\n");
    }
}

mongo_hacker_config = {
    verbose_shell:  true,      // additional verbosity
    index_paranoia: true,      // querytime explain
    enhance_api:    true,      // additonal api extensions
    indent:         2,         // number of spaces for indent
    uuid_type:      'default', // 'java', 'c#', 'python' or 'default'
    banner_message: 'Mongo-Hacker ', //banner message
    version:        '0.0.3',    // current mongo-hacker version
    show_banner:     true,      // show mongo-hacker version banner on startup

    // Shell Color Settings
    // [<color>, <bold>, <underline>]
    // Colors available: red, green, yellow, blue, magenta, cyan
    colors: {
        'number':     [ 'blue', false, false ],
        'null':       [ 'red', false, false ],
        'undefined':  [ 'magenta', false, false ],
        'objectid':   [ 'green', false, false ],
        'string':     [ 'green', false, false ],
        'function':   [ 'magenta', false, false ],
        'date':       [ 'blue', false, false ],
        'uuid':       [ 'cyan', false, false]
    }
}

if (mongo_hacker_config['show_banner']) {
    print(mongo_hacker_config['banner_message'] + mongo_hacker_config['version']);
}

//----------------------------------------------------------------------------
// Aggregation API Extensions
//----------------------------------------------------------------------------

// Inject aggregation extension while supporting base API
DBCollection.prototype.aggregate = function( ops ){
    if(arguments.length >= 1 && (hasDollar(ops) || hasDollar(ops[0]))){
        var arr = ops;

        if (!ops.length) {
            arr = [];
            for (var i=0; i<arguments.length; i++) {
                arr.push(arguments[i]);
            }
        }

        var res = this.runCommand("aggregate", {pipeline: arr});
        if (!res.ok) {
            printStackTrace();
            throw "aggregate failed: " + tojson(res);
        }
        return res;
    } else {
       return new Aggregation( this ).match( ops || {} );
    }
};

// Helper method for determining if parameter has dollar signs
function hasDollar(fields){
    for (k in fields){
        if(k.indexOf('$') !== -1){
            return true;
        };
    };
    return false;
}

//----------------------------------------------------------------------------
// Aggregation Object
//----------------------------------------------------------------------------
Aggregation = function( collection, fields ){
    this._collection = collection;
    this._pipeline = [];
    this._shellBatchSize = 20;
};

Aggregation.prototype.has_next = function() {
    return (this._index < this._results.length);
};

Aggregation.prototype.next = function() {
    var next = this._results[this._index];
    this._index += 1;
    return next
};

Aggregation.prototype.execute = function() {
    // build the command
    var aggregation = { pipeline: this._pipeline };
    if ( this._readPreference ) {
        aggregation["$readPreference"] = this.readPreference;
    }

    // run the command
    var res = this._collection.runCommand(
        "aggregate", aggregation
    );

    // check result
    if ( ! res.ok ) {
        printStackTrace();
        throw "aggregation failed: " + tojson(res);
    }

    // setup results as pseudo cursor
    this._index = 0;
    this._results = res.result;

    return this._results;
};

Aggregation.prototype.shellPrint = function() {
    if (this._results == undefined) {
        this.execute();
    }
    try {
        var i = 0;
        while (this.has_next() && i < this._shellBatchSize) {
            var result = this.next();
            printjson( result );
            i++;
        }
        if ( this.has_next() ) {
            print ( "Type \"it\" for more" );
            ___it___ = this;
        }
        else {
            ___it___ = null;
        }
    }
    catch ( e ) {
        print( e );
    }
};

Aggregation.prototype.project = function( fields ) {
    if ( ! fields ) {
        throw "project needs fields";
    }
    this._pipeline.push({ "$project": fields });
    return this;
};

Aggregation.prototype.find = function( criteria ) {
    if ( ! criteria ) {
        throw "match needs a query object";
    }
    this._pipeline.push({ "$match": criteria });
    return this;
};

Aggregation.prototype.match = function( criteria ) {
    if ( ! criteria ) {
        throw "match needs a query object";
    }
    this._pipeline.push({ "$match": criteria });
    return this;
};

Aggregation.prototype.limit = function( limit ) {
    if ( ! limit ) {
        throw "limit needs an integer indicating the limit";
    }
    this._pipeline.push({ "$limit": limit });
    return this;
};

Aggregation.prototype.skip = function( skip ) {
    if ( ! skip ) {
        throw "skip needs an integer indicating the number to skip";
    }
    this._pipeline.push({ "$skip": skip });
    return this;
};

Aggregation.prototype.unwind = function( field ) {
    if ( ! field ) {
        throw "unwind needs the key of an array field to unwind";
    }
    this._pipeline.push({ "$unwind": "$" + field });
    return this;
};

Aggregation.prototype.group = function( group_expression ) {
    if ( ! group_expression ) {
        throw "group needs an group expression";
    }
    this._pipeline.push({ "$group": group_expression });
    return this;
};

Aggregation.prototype.sort = function( sort ) {
    if ( ! sort ) {
        throw "sort needs a sort document";
    }
    this._pipeline.push({ "$sort": sort });
    return this;
};

Aggregation.prototype.geoNear = function( options ) {
    if ( ! options ) {
        throw "geo near requires options"
    }
    this._pipeline.push({ "$geoNear": options });
    return this;
};

Aggregation.prototype.readPreference = function( mode ) {
    this._readPreference = mode;
    return this;
};

Aggregation.prototype.explain = function() {
    // TODO: https://jira.mongodb.org/browse/SERVER-4504
    throw "not possible yet"
};
//----------------------------------------------------------------------------
// API Additions
//----------------------------------------------------------------------------
DBQuery.prototype.fields = function( fields ) {
    this._fields = fields;
    return this;
};

DBQuery.prototype.select = function( fields ){
    this._fields = fields;
    return this;
};

DBQuery.prototype.one = function(){
    return this.limit(1)[0];
};

DBQuery.prototype.first = function(field){
    var field = field || "$natural";
    var sortBy = {};
    sortBy[field] = 1;
    return this.sort(sortBy).one();
}

DBQuery.prototype.reverse = function( field ){
    var field = field || "$natural";
    var sortBy = {};
    sortBy[field] = -1;
    return this.sort(sortBy);
}

DBQuery.prototype.last = function( field ){
    var field = field || "$natural";
    return this.reverse(field).one();
}

DB.prototype.rename = function(newName) {
    if(newName == this.getName() || newName.length === 0)
        return;

    this.copyDatabase(this.getName(), newName, "localhost");
    this.dropDatabase();
    db = this.getSiblingDB(newName);
};

//----------------------------------------------------------------------------
// API Modifications (additions and changes)
//----------------------------------------------------------------------------

// Add upsert method which has upsert set as true and multi as false
DBQuery.prototype.upsert = function( upsert ){
    assert( upsert , "need an upsert object" );

    this._validate(upsert);
    this._db._initExtraInfo();
    this._mongo.update( this._ns , this._query , upsert , true , false );
    this._db._getExtraInfo("Upserted");
};

// Updates are always multi and never an upsert
DBQuery.prototype.update = function( update ){
    assert( update , "need an update object" );

    this._checkMulti();
    this._validate(update);
    this._db._initExtraInfo();
    this._mongo.update( this._ns , this._query , update , false , true );
    this._db._getExtraInfo("Updated");
};

// Replace one document
DBQuery.prototype.replace = function( replacement ){
   assert( replacement , "need an update object" );

   this._validate(replacement);
   this._db._initExtraInfo();
   this._mongo.update( this._ns , this._query , replacement , false , false );
   this._db._getExtraInfo("Replaced");
};

// Remove is always multi
DBQuery.prototype.remove = function(){
    for ( var k in this._query ){
        if ( k == "_id" && typeof( this._query[k] ) == "undefined" ){
            throw "can't have _id set to undefined in a remove expression";
        }
    }

    this._checkMulti();
    this._db._initExtraInfo();
    this._mongo.remove( this._ns , this._query , false );
    this._db._getExtraInfo("Removed");
};

//----------------------------------------------------------------------------
// Full Text Search
//----------------------------------------------------------------------------
DBQuery.prototype.textSearch = function( search ) {
    var text = {
        text: this._collection.getName(),
        search: search,
        filter: this._query,
        project: this._fields,
        limit: this._limit
    }

    var result = this._db.runCommand( text );
    return result.results;
};function listDbs(){
  return db.adminCommand("listDatabases").databases.map(function(d){return d.name});
}

this.__proto__.constructor.autocomplete = listDbs;shellHelper.find = function (query) {
    assert(typeof query == "string");

    var args = query.split( /\s+/ );
    query = args[0];
    args = args.splice(1);

    if (query !== "") {
        var regexp = new RegExp(query, "i");
        var result = db.runCommand("listCommands");
        for (var command in result.commands) {
            var commandObj = result.commands[command];
            var help = commandObj.help;
            if (commandObj.help.indexOf('\n') != -1 ) {
                help = commandObj.help.substring(0, commandObj.help.lastIndexOf('\n'));
            }
            if (regexp.test(command) || regexp.test(help)) {
                var numSpaces = 30 - command.length;
                print(colorize(command, 'green'), Array(numSpaces).join(" "), "-", help);
            }
        }
    }
};

//----------------------------------------------------------------------------
// Color Functions
//----------------------------------------------------------------------------
__ansi = {
    csi: String.fromCharCode(0x1B) + '[',
    reset: '0',
    text_prop: 'm',
    foreground: '3',
    bright: '1',
    underline: '4',

    colors: {
        red: '1',
        green: '2',
        yellow: '3',
        blue: '4',
        magenta: '5',
        cyan: '6'
    }
};

function controlCode( parameters ) {
    if ( parameters === undefined ) {
        parameters = "";
    }
    else if (typeof(parameters) == 'object' && (parameters instanceof Array)) {
        parameters = parameters.join(';');
    }

    return __ansi.csi + String(parameters) + String(__ansi.text_prop);
};

function applyColorCode( string, properties ) {
    return controlCode(properties) + String(string) + controlCode();
};

function colorize( string, color, bright, underline ) {
    var params = [];
    var code = __ansi.foreground + __ansi.colors[color];

    params.push(code);

    if ( bright === true ) params.push(__ansi.bright);
    if ( underline === true ) params.push(__ansi.underline);

    return applyColorCode( string, params );
};
__indent = Array(mongo_hacker_config.indent + 1).join(' ');

ObjectId.prototype.toString = function() {
    return this.str;
};

ObjectId.prototype.tojson = function(indent, nolint) {
    return tojson(this);
};

Date.prototype.tojson = function() {

    var UTC = Date.printAsUTC ? 'UTC' : '';

    var year = this['get'+UTC+'FullYear']().zeroPad(4);
    var month = (this['get'+UTC+'Month']() + 1).zeroPad(2);
    var date = this['get'+UTC+'Date']().zeroPad(2);
    var hour = this['get'+UTC+'Hours']().zeroPad(2);
    var minute = this['get'+UTC+'Minutes']().zeroPad(2);
    var sec = this['get'+UTC+'Seconds']().zeroPad(2);

    if (this['get'+UTC+'Milliseconds']())
        sec += '.' + this['get'+UTC+'Milliseconds']().zeroPad(3);

    var ofs = 'Z';
    if (!Date.printAsUTC) {
        var ofsmin = this.getTimezoneOffset();
        if (ofsmin !== 0){
            ofs = ofsmin > 0 ? '-' : '+'; // This is correct
            ofs += (ofsmin/60).zeroPad(2);
            ofs += (ofsmin%60).zeroPad(2);
        }
    }

    var isodate =  colorize('"' + [year, month, date].join('-') + 'T' + hour +':' + minute + ':' + sec + ofs + '"', "cyan");
    return 'ISODate(' + isodate + ')';
};

Array.tojson = function( a , indent , nolint ){
    var lineEnding = nolint ? " " : "\n";

    if (!indent)
        indent = "";

    if ( nolint )
        indent = "";

    if (a.length === 0) {
        return "[ ]";
    }

    var s = "[" + lineEnding;
    indent += __indent;
    for ( var i=0; i<a.length; i++){
        s += indent + tojson( a[i], indent , nolint );
        if ( i < a.length - 1 ){
            s += "," + lineEnding;
        }
    }
    if ( a.length === 0 ) {
        s += indent;
    }

    indent = indent.substring(__indent.length);
    s += lineEnding+indent+"]";
    return s;
};

NumberLong.prototype.tojson = function() {
    return 'NumberLong(' + colorize('"' + this.toString().match(/-?\d+/)[0] + '"', "red") + ')';
};

NumberInt.prototype.tojson = function() {
    return 'NumberInt(' + colorize('"' + this.toString().match(/-?\d+/)[0] + '"', "red") + ')';
};

BinData.prototype.tojson = function(indent , nolint) {
    if (this.subtype() === 3) {
        return 'UUID(' + colorize('"' + uuidToString(this) + '"', "cyan") + ', ' + colorize('"' + mongo_hacker_config['uuid_type'] + '"', "cyan") + ')'
    } else if (this.subtype() === 4) {
        return 'UUID(' + colorize('"' + uuidToString(this, "default") + '"', "cyan") + ')'
    } else {
        return 'BinData(' + colorize(this.subtype(), "red") + ', ' + colorize('"' + this.base64() + '"', "green", true) + ')';
    }
};

DBQuery.prototype.shellPrint = function(){
    try {
        var start = new Date().getTime();
        var n = 0;
        while ( this.hasNext() && n < DBQuery.shellBatchSize ){
            var s = this._prettyShell ? tojson( this.next() ) : tojson( this.next() , "" , true );
            print( s );
            n++;
        }

        var output = [];

        if (typeof _verboseShell !== 'undefined' && _verboseShell) {
            var time = new Date().getTime() - start;
            var slowms = getSlowms();
            var fetched = "Fetched " + n + " record(s) in ";
            if (time > slowms) {
                fetched += colorize(time + "ms", "red", true);
            } else {
                fetched += colorize(time + "ms", "green", true);
            }
            output.push(fetched);
        }

        var paranoia = mongo_hacker_config.index_paranoia;

        if (typeof paranoia !== 'undefined' && paranoia) {
            var explain = this.clone();
            explain._ensureSpecial();
            explain._query.$explain = true;
            explain._limit = Math.abs(n._limit) * -1;
            var result = explain.next();
            var type = result.cursor;

            if (type !== undefined) {
                var index_use = "Index[";
                if (type == "BasicCursor") {
                    index_use += colorize( "none", "red", true);
                } else {
                    index_use += colorize( result.cursor.substring(12), "green", true );
                }
                index_use += "]";
                output.push(index_use);
            }
        }

        if ( this.hasNext() ) {
            ___it___  = this;
            output.push("More[" + colorize("true", "green", true) + "]");
        }
        print(output.join(" -- "));
    }
    catch ( e ){
        print( e );
    }
};

tojsonObject = function( x, indent, nolint ) {
    var lineEnding = nolint ? " " : "\n";
    var tabSpace = nolint ? "" : __indent;

    assert.eq( ( typeof x ) , "object" , "tojsonObject needs object, not [" + ( typeof x ) + "]" );

    if (!indent) 
        indent = "";

    if ( typeof( x.tojson ) == "function" && x.tojson != tojson ) {
        return x.tojson(indent,nolint);
    }

    if ( x.constructor && typeof( x.constructor.tojson ) == "function" && x.constructor.tojson != tojson ) {
        return x.constructor.tojson( x, indent , nolint );
    }

    if ( x.toString() == "[object MaxKey]" )
        return "{ $maxKey : 1 }";
    if ( x.toString() == "[object MinKey]" )
        return "{ $minKey : 1 }";

    var s = "{" + lineEnding;

    // push one level of indent
    indent += tabSpace;

    var total = 0;
    for ( var k in x ) total++;
    if ( total === 0 ) {
        s += indent + lineEnding;
    }

    var keys = x;
    if ( typeof( x._simpleKeys ) == "function" )
        keys = x._simpleKeys();
    var num = 1;
    for ( var key in keys ){

        var val = x[key];
        if ( val == DB.prototype || val == DBCollection.prototype )
            continue;

        s += indent + colorize("\"" + key + "\"", "yellow") + ": " + tojson( val, indent , nolint );
        if (num != total) {
            s += ",";
            num++;
        }
        s += lineEnding;
    }

    // pop one level of indent
    indent = indent.substring(__indent.length);
    return s + indent + "}";
};


tojson = function( x, indent , nolint ) {
    if ( x === null )
        return colorize("null", "red", true);

    if ( x === undefined )
        return colorize("undefined", "magenta", true);

    if ( x.isObjectId ) {
        return 'ObjectId(' + colorize('"' + x.str + '"', "green", false, true) + ')';
    }

    if (!indent)
        indent = "";

    var s;
    switch ( typeof x ) {
    case "string": {
        s = "\"";
        for ( var i=0; i<x.length; i++ ){
            switch (x[i]){
                case '"': s += '\\"'; break;
                case '\\': s += '\\\\'; break;
                case '\b': s += '\\b'; break;
                case '\f': s += '\\f'; break;
                case '\n': s += '\\n'; break;
                case '\r': s += '\\r'; break;
                case '\t': s += '\\t'; break;

                default: {
                    var code = x.charCodeAt(i);
                    if (code < 0x20){
                        s += (code < 0x10 ? '\\u000' : '\\u00') + code.toString(16);
                    } else {
                        s += x[i];
                    }
                }
            }
        }
        s += "\"";
        return colorize(s, "green", true);
    }
    case "number":
        return colorize(x, "red");
    case "boolean":
        return colorize("" + x, "blue");
    case "object": {
        s = tojsonObject( x, indent , nolint );
        if ( ( nolint === null || nolint === true ) && s.length < 80 && ( indent === null || indent.length === 0 ) ){
            s = s.replace( /[\s\r\n ]+/gm , " " );
        }
        return s;
    }
    case "function":
        return colorize(x.toString(), "magenta");
    default:
        throw "tojson can't handle type " + ( typeof x );
    }

};


DBQuery.prototype._validate = function( o ){
    var firstKey = null;
    for (var k in o) { firstKey = k; break; }

    if (firstKey !== null && firstKey[0] == '$') {
        // for mods we only validate partially, for example keys may have dots
        this._validateObject( o );
    } else {
        // we're basically inserting a brand new object, do full validation
        this._validateForStorage( o );
    }
};

DBQuery.prototype._validateObject = function( o ){
    if (typeof(o) != "object")
        throw "attempted to save a " + typeof(o) + " value.  document expected.";

    if ( o._ensureSpecial && o._checkModify )
        throw "can't save a DBQuery object";
};

DBQuery.prototype._validateForStorage = function( o ){
    this._validateObject( o );
    for ( var k in o ){
        if ( k.indexOf( "." ) >= 0 ) {
            throw "can't have . in field names [" + k + "]" ;
        }

        if ( k.indexOf( "$" ) === 0 && ! DBCollection._allowedFields[k] ) {
            throw "field names cannot start with $ [" + k + "]";
        }

        if ( o[k] !== null && typeof( o[k] ) === "object" ) {
            this._validateForStorage( o[k] );
        }
    }
};

DBQuery.prototype._checkMulti = function(){
  if(this._limit > 0 || this._skip > 0){
    var ids = this.clone().select({_id: 1}).map(function(o){return o._id;});
    this._query['_id'] = {'$in': ids};
    return true;
  } else {
    return false;
  }
};

DBQuery.prototype.ugly = function(){
    this._prettyShell = false;
    return this;
}
//----------------------------------------------------------------------------
// findAndModify Helper
//----------------------------------------------------------------------------
DBQuery.prototype._findAndModify = function( options ) {
    var findAndModify = {
        'findandmodify': this._collection.getName(),
        'query': this._query,
        'new': true,
        'fields': this._fields,
        'upsert': this._upsert || false,
        'sort': this._query.orderby || {},
    };

    for (var key in options){
        findAndModify[key] = options[key];
    };

    var result = this._db.runCommand( findAndModify );
    if ( ! result.ok ){
        throw "findAndModifyFailed failed: " + tojson( result );
    };
    return result.value;
};

//----------------------------------------------------------------------------
// findAndModify Terminal Variants
//----------------------------------------------------------------------------
DBQuery.prototype.updateAndGet = function( update ) {
    return this._findAndModify({ 'update': update });
};

DBQuery.prototype.getAndUpdate = function( update ) {
    return this._findAndModify({ 'update': update, 'new': false });
};

DBQuery.prototype.replaceAndGet = function( replacement ) {
    return this._findAndModify({ 'update': replacement });
};

DBQuery.prototype.getAndReplace = function( replacement ) {
    return this._findAndModify({ 'update': replacement, 'new': false });
};

DBQuery.prototype.getAndRemove = function() {
    return this._findAndModify({ 'remove': true })
};function runMatch(cmd, args, regexp) {
    clearRawMongoProgramOutput();
    if (args) {
        run(cmd, args);
    } else {
        run(cmd);
    }
    var output = rawMongoProgramOutput();
    return output.match(regexp);
};

function getEnv(env_var) {
    var env_regex = new RegExp(env_var + '=(.*)');
    return runMatch('env', '', env_regex)[1];
};

function getVersion() {
    var regexp = /version: (\d).(\d).(\d)/;
    return runMatch('mongo', '--version', regexp).slice(1, 4);
};

function isMongos() {
    return db.isMaster().msg == 'isdbgrid';
};

function getSlowms(){
    if(!isMongos()){
        return db.getProfilingStatus().slowms;
    } else {
        return 100;
    }
};
// Override group because map/reduce style is deprecated
DBCollection.prototype.agg_group = function( name, group_field, operation, op_value, filter ) {
    var ops = [];
    var group_op = { $group: { _id: '$' + group_field } };

    if (filter !== undefined) {
        ops.push({ '$match': filter });
    }

    group_op['$group'][name] = { };
    group_op['$group'][name]['$' + operation] = op_value;
    ops.push(group_op);

    return this.aggregate(ops);
};

// Function that groups and counts by group after applying filter
DBCollection.prototype.gcount = function( group_field, filter ) {
    return this.agg_group('count', group_field, 'sum', 1, filter);
};

// Function that groups and sums sum_field after applying filter
DBCollection.prototype.gsum = function( group_field, sum_field, filter ) {
    return this.agg_group('sum', group_field, 'sum', '$' + sum_field, filter);
};

// Function that groups and averages avg_feld after applying filter
DBCollection.prototype.gavg = function( group_field, avg_field, filter ) {
    return this.agg_group('avg', group_field, 'avg', '$' + avg_field, filter);
};
// Improve the default prompt with hostname, process type, and version
prompt = function() {
    var serverstatus = db.serverStatus();
    var host = serverstatus.host.split('.')[0];
    var process = serverstatus.process;
    var version = db.serverBuildInfo().version;
    var repl_set = db._adminCommand({"replSetGetStatus": 1}).ok !== 0;
    var rs_state = '';
    if(repl_set) {
        members = rs.status().members;
        for(var i = 0; i<members.length; i++){
            if(members[i].self === true){
                rs_state = '[' + members[i].stateStr + ']';
            }
        };
    }
    var state = isMongos() ? '[mongos]' : rs_state;
    return host + '(' + process + '-' + version + ')' + state + ' ' + db + '> ';
};

printShardingStatus = function( configDB , verbose ){
    if (configDB === undefined)
        configDB = db.getSisterDB('config')

    var version = configDB.getCollection( "version" ).findOne();
    if ( version == null ){
        print( "printShardingStatus: this db does not have sharding enabled. be sure you are connecting to a mongos from the shell and not to a mongod." );
        return;
    }

    var raw = "";
    var output = function(s){
        raw += s + "\n";
    }
    output( "--- Sharding Status --- " );
    output( "  sharding version: " + tojson( configDB.getCollection( "version" ).findOne(), "  " ) );

    output( "  shards:" );
    configDB.shards.find().sort( { _id : 1 } ).forEach(
        function(z){
            output( "    " + tojsononeline( z ) );
        }
    );

    output( "  databases:" );
    configDB.databases.find().sort( { name : 1 } ).forEach(
        function(db){
            output( "    " + tojsononeline(db,"",true) );

            if (db.partitioned){
                configDB.collections.find( { _id : new RegExp( "^" +
                    RegExp.escape(db._id) + "\\." ) } ).
                    sort( { _id : 1 } ).forEach( function( coll ){
                        if ( coll.dropped == false ){
                            output( "    " + coll._id );
                            output( "      shard key: " + tojson(coll.key, 0, true) );
                            output( "      chunks:" );

                            res = configDB.chunks.aggregate(
                                { "$match": { ns: coll._id } },
                                { "$group": { _id: "$shard", nChunks: { "$sum": 1 } } }
                            ).result

                            var totalChunks = 0;
                            res.forEach( function(z){
                                totalChunks += z.nChunks;
                                output( "        " + z._id + ": " + z.nChunks );
                            } )

                            if ( totalChunks < 20 || verbose ){
                                configDB.chunks.find( { "ns" : coll._id } ).sort( { min : 1 } ).forEach(
                                    function(chunk){
                                        output( "        " +
                                            tojson( chunk.min, 0, true) + " -> " +
                                            tojson( chunk.max, 0, true ) +
                                            " on: " + colorize(chunk.shard, "cyan") + " " +
                                            ( chunk.jumbo ? "jumbo " : "" )
                                        );
                                    }
                                );
                            }
                            else {
                                output( "\t\t\ttoo many chunks to print, use verbose if you want to force print" );
                            }

                            configDB.tags.find( { ns : coll._id } ).sort( { min : 1 } ).forEach(
                                function( tag ) {
                                    output( "        tag: " + tag.tag + "  " + tojson( tag.min ) + " -> " + tojson( tag.max ) );
                                }
                            )
                        }
                    }
                )
            }
        }
    );

    print( raw );
}
// Better show dbs
shellHelper.show = function (what) {
    assert(typeof what == "string");

    var args = what.split( /\s+/ );
    what = args[0]
    args = args.splice(1)

    if (what == "profile") {
        if (db.system.profile.count() == 0) {
            print("db.system.profile is empty");
            print("Use db.setProfilingLevel(2) will enable profiling");
            print("Use db.system.profile.find() to show raw profile entries");
        }
        else {
            print();
            db.system.profile.find({ millis: { $gt: 0} }).sort({ $natural: -1 }).limit(5).forEach(
                function (x) {
                    print("" + x.op + "\t" + x.ns + " " + x.millis + "ms " + String(x.ts).substring(0, 24));
                    var l = "";
                    for ( var z in x ){
                        if ( z == "op" || z == "ns" || z == "millis" || z == "ts" )
                            continue;

                        var val = x[z];
                        var mytype = typeof(val);

                        if ( mytype == "string" ||
                             mytype == "number" )
                            l += z + ":" + val + " ";
                        else if ( mytype == "object" )
                            l += z + ":" + tojson(val ) + " ";
                        else if ( mytype == "boolean" )
                            l += z + " ";
                        else
                            l += z + ":" + val + " ";

                    }
                    print( l );
                    print("\n");
                }
            )
        }
        return "";
    }

    if (what == "users") {
        db.system.users.find().forEach(printjson);
        return "";
    }

    if (what == "collections" || what == "tables") {
        db.getCollectionNames().forEach(function (x) { print(x) });
        return "";
    }

    if (what == "dbs" || what == "databases") {
        var dbs = db.getMongo().getDBs();
        var dbinfo = [];
        var maxNameLength = 0;
        var maxGbDigits = 0;

        dbs.databases.forEach(function (x){
            var sizeStr = (x.sizeOnDisk / 1024 / 1024 / 1024).toFixed(3);
            var nameLength = x.name.length;
            var gbDigits = sizeStr.indexOf(".");

            if( nameLength > maxNameLength) maxNameLength = nameLength;
            if( gbDigits > maxGbDigits ) maxGbDigits = gbDigits;

            dbinfo.push({
                name:      x.name,
                size:      x.sizeOnDisk,
                size_str:  sizeStr,
                name_size: nameLength,
                gb_digits: gbDigits
            });
        });

        dbinfo.sort(function (a,b) { a.name - b.name });
        dbinfo.forEach(function (db) {
            var namePadding = maxNameLength - db.name_size;
            var sizePadding = maxGbDigits   - db.gb_digits;
            var padding = Array(namePadding + sizePadding + 3).join(" ");
            if (db.size > 1) {
                print(colorize(db.name, "green", true) + padding + db.size_str + "GB");
            } else {
                print(colorize(db.name, "green", true) + padding + "(empty)");
            }
        });

        return "";
    }

    if (what == "log" ) {
        var n = "global";
        if ( args.length > 0 )
            n = args[0]

        var res = db.adminCommand( { getLog : n } );
        if ( ! res.ok ) {
            print("Error while trying to show " + n + " log: " + res.errmsg);
            return "";
        }
        for ( var i=0; i<res.log.length; i++){
            print( res.log[i] )
        }
        return ""
    }

    if (what == "logs" ) {
        var res = db.adminCommand( { getLog : "*" } )
        if ( ! res.ok ) {
            print("Error while trying to show logs: " + res.errmsg);
            return "";
        }
        for ( var i=0; i<res.names.length; i++){
            print( res.names[i] )
        }
        return ""
    }

    if (what == "startupWarnings" ) {
        var dbDeclared, ex;
        try {
            // !!db essentially casts db to a boolean
            // Will throw a reference exception if db hasn't been declared.
            dbDeclared = !!db;
        } catch (ex) {
            dbDeclared = false;
        }
        if (dbDeclared) {
            var res = db.adminCommand( { getLog : "startupWarnings" } );
            if ( res.ok ) {
                if (res.log.length == 0) {
                    return "";
                }
                print( "Server has startup warnings: " );
                for ( var i=0; i<res.log.length; i++){
                    print( res.log[i] )
                }
                return "";
            } else if (res.errmsg == "unauthorized") {
                // Don't print of startupWarnings command failed due to auth
                return "";
            } else {
                print("Error while trying to show server startup warnings: " + res.errmsg);
                return "";
            }
        } else {
            print("Cannot show startupWarnings, \"db\" is not set");
            return "";
        }
    }

    throw "don't know how to show [" + what + "]";

}
function base64ToHex(base64) {
    var base64Digits = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
    var hexDigits = "0123456789abcdef";
    var hex = "";
    for (var i = 0; i < 24; ) {
        var e1 = base64Digits.indexOf(base64[i++]);
        var e2 = base64Digits.indexOf(base64[i++]);
        var e3 = base64Digits.indexOf(base64[i++]);
        var e4 = base64Digits.indexOf(base64[i++]);
        var c1 = (e1 << 2) | (e2 >> 4);
        var c2 = ((e2 & 15) << 4) | (e3 >> 2);
        var c3 = ((e3 & 3) << 6) | e4;
        hex += hexDigits[c1 >> 4];
        hex += hexDigits[c1 & 15];
        if (e3 != 64) {
            hex += hexDigits[c2 >> 4];
            hex += hexDigits[c2 & 15];
        }
        if (e4 != 64) {
            hex += hexDigits[c3 >> 4];
            hex += hexDigits[c3 & 15];
        }
    }
    return hex;
}

function hexToBase64(hex) {
    var base64Digits = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
    var base64 = "";
    var group;
    for (var i = 0; i < 30; i += 6) {
        group = parseInt(hex.substr(i, 6), 16);
        base64 += base64Digits[(group >> 18) & 0x3f];
        base64 += base64Digits[(group >> 12) & 0x3f];
        base64 += base64Digits[(group >> 6) & 0x3f];
        base64 += base64Digits[group & 0x3f];
    }
    group = parseInt(hex.substr(30, 2), 16);
    base64 += base64Digits[(group >> 2) & 0x3f];
    base64 += base64Digits[(group << 4) & 0x3f];
    base64 += "==";
    return base64;
}

var platformSpecificUuidModifications = {
    "java": function (hex) {
        var msb = hex.substr(0, 16);
        var lsb = hex.substr(16, 16);
        msb = msb.substr(14, 2) + msb.substr(12, 2) + msb.substr(10, 2) + msb.substr(8, 2)
            + msb.substr(6, 2) + msb.substr(4, 2) + msb.substr(2, 2) + msb.substr(0, 2);
        lsb = lsb.substr(14, 2) + lsb.substr(12, 2) + lsb.substr(10, 2) + lsb.substr(8, 2)
            + lsb.substr(6, 2) + lsb.substr(4, 2) + lsb.substr(2, 2) + lsb.substr(0, 2);
        return msb + lsb;
    },
    "c#": function (hex) {
        return hex.substr(6, 2) + hex.substr(4, 2) + hex.substr(2, 2) + hex.substr(0, 2)
            + hex.substr(10, 2) + hex.substr(8, 2) + hex.substr(14, 2) + hex.substr(12, 2)
            + hex.substr(16, 16);
    },
    "python": function (hex) {
        return hex;
    },
    "default": function (hex) {
        return hex;
    }
};

function UUID(uuid, type) {
    var hex = uuid.replace(/[{}-]/g, "");
    var typeNum = 4;
    if (type != undefined) {
        typeNum = 3;
        hex = platformSpecificUuidModifications[type](hex);
    }
    return new BinData(typeNum, hexToBase64(hex));
}

function uuidToString(uuid, uuidType) {
    var uuidType = uuidType || mongo_hacker_config['uuid_type'];
    var hex = platformSpecificUuidModifications[uuidType](base64ToHex(uuid.base64()));
    return hex.substr(0, 8) + '-' + hex.substr(8, 4) + '-' + hex.substr(12, 4)
        + '-' + hex.substr(16, 4) + '-' + hex.substr(20, 12);
}
setVerboseShell(true);

DBQuery.prototype._prettyShell = true

DB.prototype._getExtraInfo = function(action) {
    if ( typeof _verboseShell === 'undefined' || !_verboseShell ) {
        __callLastError = true;
        return;
    }

    // explicit w:1 so that replset getLastErrorDefaults aren't used here which would be bad.
    var startTime = new Date().getTime();
    var res = this.getLastErrorCmd(1);
    if (res) {
        if (res.err !== undefined && res.err !== null) {
            // error occurred, display it
            print(res.err);
            return;
        }

        var info = action + " ";
        // hack for inserted because res.n is 0
        info += action != "Inserted" ? res.n : 1;
        if (res.n > 0 && res.updatedExisting !== undefined) info += " " + (res.updatedExisting ? "existing" : "new");
        info += " record(s) in ";
        var time = new Date().getTime() - startTime;
        var slowms = getSlowms();
        if (time > slowms) {
            info += colorize(time + "ms", "red", true);
        } else {
            info += colorize(time + "ms", "green", true);
        }
        print(info);
    }
};