URI Templates

JavaScript performance comparison

Test case created by Rodney

Info

Comparing uri-templates (interpreter) and URI.js (compiler) implementations of URI Templates (RFC 6570).

Preparation code

<script>
/*
UriTemplates Template Processor - Version: @VERSION - Dated: @DATE
(c) marc.portier@gmail.com - 2011-2012
Licensed under ALPv2
*/


;
var uritemplate = (function() {

// Below are the functions we originally used from jQuery.
// The implementations below are often more naive then what is inside jquery, but they suffice for our needs.
 
function isFunction(fn) {
    return typeof fn == 'function';
}
 
function isEmptyObject (obj) {
    for(var name in obj){
        return false;
    }
    return true;
}
 
function extend(base, newprops) {
    for (var name in newprops) {
        base[name] = newprops[name];
    }
    return base;
}

/**
 * Create a runtime cache around retrieved values from the context.
 * This allows for dynamic (function) results to be kept the same for multiple
 * occuring expansions within one template.
 * Note: Uses key-value tupples to be able to cache null values as well.
 */

 //TODO move this into prep-processing
function CachingContext(context) {
    this.raw = context;
    this.cache = {};
}
CachingContext.prototype.get = function(key) {
    var val = this.lookupRaw(key);
    var result = val;
   
    if (isFunction(val)) { // check function-result-cache
        var tupple = this.cache[key];
        if (tupple !== null && tupple !== undefined) {
            result = tupple.val;
        } else {
            result = val(this.raw);
            this.cache[key] = {key: key, val: result};
            // NOTE: by storing tupples we make sure a null return is validly consistent too in expansions
        }
    }
    return result;
};

CachingContext.prototype.lookupRaw = function(key) {
    return CachingContext.lookup(this, this.raw, key);
};

CachingContext.lookup = function(me, context, key) {
    var result = context[key];
    if (result !== undefined) {
        return result;
    } else {
        var keyparts = key.split('.');
        var i = 0, keysplits = keyparts.length - 1;
        for (i = 0; i<keysplits; i++) {
            var leadKey = keyparts.slice(0, keysplits - i).join('.');
            var trailKey = keyparts.slice(-i-1).join('.');
            var leadContext = context[leadKey];
            if (leadContext !== undefined) {
                return CachingContext.lookup(me, leadContext, trailKey);
            }
        }
        return undefined;
    }
};


function UriTemplate(set) {
    this.set = set;
}

UriTemplate.prototype.expand = function(context) {
    var cache = new CachingContext(context);
    var res = "";
    var i = 0, cnt = this.set.length;
    for (i = 0; i<cnt; i++ ) {
        res += this.set[i].expand(cache);
    }
    return res;
};

//TODO: change since draft-0.6 about characters in literals
/* extract:
The characters outside of expressions in a URI Template string are intended to be copied literally to the URI-reference if the character is allowed in a URI (reserved / unreserved / pct-encoded) or, if not allowed, copied to the URI-reference in its UTF-8 pct-encoded form.
*/

function Literal(txt ) {
    this.txt = txt;
}

Literal.prototype.expand = function() {
    return this.txt;
};



var RESERVEDCHARS_RE = new RegExp("[:/?#\\[\\]@!$&()*+,;=']","g");
function encodeNormal(val) {
    return encodeURIComponent(val).replace(RESERVEDCHARS_RE, function(s) {return escape(s);} );
}

//var SELECTEDCHARS_RE = new RegExp("[]","g");
function encodeReserved(val) {
    //return encodeURI(val).replace(SELECTEDCHARS_RE, function(s) {return escape(s)} );
    return encodeURI(val); // no need for additional replace if selected-chars is empty
}


function addUnNamed(name, key, val) {
    return key + (key.length > 0 ? "=" : "") + val;
}

function addNamed(name, key, val, noName) {
    noName = noName || false;
    if (noName) { name = ""; }
   
    if (!key || key.length === 0)  {
        key = name;
    }
    return key + (key.length > 0 ? "=" : "") + val;
}

function addLabeled(name, key, val, noName) {
    noName = noName || false;
    if (noName) { name = ""; }
   
    if (!key || key.length === 0)  {
        key = name;
    }
    return key + (key.length > 0 && val ? "=" : "") + val;
}


var simpleConf = {
    prefix : "",     joiner : ",",     encode : encodeNormal,    builder : addUnNamed
};
var reservedConf = {
    prefix : "",     joiner : ",",     encode : encodeReserved,  builder : addUnNamed
};
var fragmentConf = {
    prefix : "#",    joiner : ",",     encode : encodeReserved,  builder : addUnNamed
};
var pathParamConf = {
    prefix : ";",    joiner : ";",     encode : encodeNormal,    builder : addLabeled
};
var formParamConf = {
    prefix : "?",    joiner : "&",     encode : encodeNormal,    builder : addNamed
};
var formContinueConf = {
    prefix : "&",    joiner : "&",     encode : encodeNormal,    builder : addNamed
};
var pathHierarchyConf = {
    prefix : "/",    joiner : "/",     encode : encodeNormal,    builder : addUnNamed
};
var labelConf = {
    prefix : ".",    joiner : ".",     encode : encodeNormal,    builder : addUnNamed
};


function Expression(conf, vars ) {
    extend(this, conf);
    this.vars = vars;
}

Expression.build = function(ops, vars) {
    var conf;
    switch(ops) {
        case ''  : conf = simpleConf; break;
        case '+' : conf = reservedConf; break;
        case '#' : conf = fragmentConf; break;
        case ';' : conf = pathParamConf; break;
        case '?' : conf = formParamConf; break;
        case '&' : conf = formContinueConf; break;
        case '/' : conf = pathHierarchyConf; break;
        case '.' : conf = labelConf; break;
        default  : throw "Unexpected operator: '"+ops+"'";
    }
    return new Expression(conf, vars);
};

Expression.prototype.expand = function(context) {
    var joiner = this.prefix;
    var nextjoiner = this.joiner;
    var buildSegment = this.builder;
    var res = "";
    var i = 0, cnt = this.vars.length;
   
    for (i = 0 ; i< cnt; i++) {
        var varspec = this.vars[i];
        varspec.addValues(context, this.encode, function(key, val, noName) {
            var segm = buildSegment(varspec.name, key, val, noName);
            if (segm !== null && segm !== undefined) {
                res += joiner + segm;
                joiner = nextjoiner;
            }
        });
    }
    return res;
};



var UNBOUND = {};

/**
 * Helper class to help grow a string of (possibly encoded) parts until limit is reached
 */

function Buffer(limit) {
    this.str = "";
    if (limit === UNBOUND) {
        this.appender = Buffer.UnboundAppend;
    } else {
        this.len = 0;
        this.limit = limit;
        this.appender = Buffer.BoundAppend;
    }
}

Buffer.prototype.append = function(part, encoder) {
    return this.appender(this, part, encoder);
};

Buffer.UnboundAppend = function(me, part, encoder) {
    part = encoder ? encoder(part) : part;
    me.str += part;
    return me;
};

Buffer.BoundAppend = function(me, part, encoder) {
    part = part.substring(0, me.limit - me.len);
    me.len += part.length;
   
    part = encoder ? encoder(part) : part;
    me.str += part;
    return me;
};


function arrayToString(arr, encoder, maxLength) {
    var buffer = new Buffer(maxLength);    
    var joiner = "";

    var i = 0, cnt = arr.length;
    for (i=0; i<cnt; i++) {
        if (arr[i] !== null && arr[i] !== undefined) {
            buffer.append(joiner).append(arr[i], encoder);
            joiner = ",";
        }
    }
    return buffer.str;
}

function objectToString(obj, encoder, maxLength) {
    var buffer = new Buffer(maxLength);    
    var joiner = "";
    var k;

    for (k in obj) {
        if (obj.hasOwnProperty(k) ) {
            if (obj[k] !== null && obj[k] !== undefined) {
                buffer.append(joiner + k + ',').append(obj[k], encoder);
                joiner = ",";
            }
        }
    }
    return buffer.str;
}


function simpleValueHandler(me, val, valprops, encoder, adder) {
    var result;
   
    if (valprops.isArr) {
        result = arrayToString(val, encoder, me.maxLength);
    } else if (valprops.isObj) {
        result = objectToString(val, encoder, me.maxLength);
    } else {
        var buffer = new Buffer(me.maxLength);
        result = buffer.append(val, encoder).str;
    }      
   
    adder("", result);
}

function explodeValueHandler(me, val, valprops, encoder, adder) {
    if (valprops.isArr) {
        var i = 0, cnt = val.length;
        for (i = 0; i<cnt; i++) {
            adder("", encoder(val[i]) );
        }
    } else if (valprops.isObj) {
        var k;
        for (k in val) {
            if (val.hasOwnProperty(k)) {
                adder(k, encoder(val[k]) );
            }
        }
    } else { // explode-requested, but single value
        adder("", encoder(val));
    }
}

function valueProperties(val) {
    var isArr = false;
    var isObj = false;
    var isUndef = true;  //note: "" is empty but not undef
   
    if (val !== null && val !== undefined) {
        isArr = (val.constructor === Array);
        isObj = (val.constructor === Object);
        isUndef = (isArr && val.length === 0) || (isObj && isEmptyObject(val));
    }
   
    return {isArr: isArr, isObj: isObj, isUndef: isUndef};
}


function VarSpec (name, vhfn, nums) {
    this.name = unescape(name);
    this.valueHandler = vhfn;
    this.maxLength = nums;
}


VarSpec.build = function(name, expl, part, nums) {
    var valueHandler, valueModifier;
   
    if (!!expl) { //interprete as boolean
        valueHandler = explodeValueHandler;
    } else {
        valueHandler = simpleValueHandler;
    }
   
    if (!part) {
        nums = UNBOUND;
    }
   
    return new VarSpec(name, valueHandler, nums);
};


VarSpec.prototype.addValues = function(context, encoder, adder) {
    var val = context.get(this.name);
    var valprops = valueProperties(val);
    if (valprops.isUndef) { return; } // ignore empty values
    this.valueHandler(this, val, valprops, encoder, adder);
};
   
   

//----------------------------------------------parsing logic
// How each varspec should look like
var VARSPEC_RE=/([^*:]*)((\*)|(:)([0-9]+))?/;

var match2varspec = function(m) {
    var name = m[1];
    var expl = m[3];
    var part = m[4];
    var nums = parseInt(m[5], 10);
   
    return VarSpec.build(name, expl, part, nums);
};


// Splitting varspecs in list with:
var LISTSEP=",";

// How each template should look like
var TEMPL_RE=/(\{([+#.;?&\/])?(([^.*:,{}|@!=$()][^*:,{}$()]*)(\*|:([0-9]+))?(,([^.*:,{}][^*:,{}]*)(\*|:([0-9]+))?)*)\})/g;
// Note: reserved operators: |!@ are left out of the regexp in order to make those templates degrade into literals
// (as expected by the spec - see tests.html "reserved operators")


var match2expression = function(m) {
    var expr = m[0];
    var ops = m[2] || '';
    var vars = m[3].split(LISTSEP);
    var i = 0, len = vars.length;
    for (i = 0; i<len; i++) {
        var match;
        if ( (match = vars[i].match(VARSPEC_RE)) === null) {
            throw "unexpected parse error in varspec: " + vars[i];
        }
        vars[i] = match2varspec(match);
    }
   
    return Expression.build(ops, vars);
};


var pushLiteralSubstr = function(set, src, from, to) {
    if (from < to) {
        var literal = src.substr(from, to - from);
        set.push(new Literal(literal));
    }
};

var parse = function(str) {
    var lastpos = 0;
    var comp = [];
       
    var match;
    var pattern = TEMPL_RE;
    pattern.lastIndex = 0; // just to be sure
    while ((match = pattern.exec(str)) !== null) {
        var newpos = match.index;
        pushLiteralSubstr(comp, str, lastpos, newpos);
       
        comp.push(match2expression(match));
        lastpos = pattern.lastIndex;
    }
    pushLiteralSubstr(comp, str, lastpos, str.length);

    return new UriTemplate(comp);
};


//-------------------------------------------comments and ideas

//TODO: consider building cache of previously parsed uris or even parsed expressions?

return parse;

}());

/*!
 * URI.js - Mutating URLs
 * URI Template Support - http://tools.ietf.org/html/rfc6570
 *
 * Version: 1.6.3
 *
 * Author: Rodney Rehm
 * Web: http://medialize.github.com/URI.js/
 *
 * Licensed under
 *   MIT License http://www.opensource.org/licenses/mit-license
 *   GPL v3 http://opensource.org/licenses/GPL-3.0
 *
 */

(function(undefined) {
   
var hasOwn = Object.prototype.hasOwnProperty,
    _use_module = typeof module !== "undefined" && module.exports,
    _load_module = function(module) {
        return _use_module ? require('./' + module) : window[module];
    },
    URI = {},
    URITemplate = function(expression) {
        // serve from cache where possible
        if (URITemplate._cache[expression]) {
            return URITemplate._cache[expression];
        }
       
        // Allow instantiation without the 'new' keyword
        if (!(this instanceof URITemplate)) {
            return new URITemplate(expression);
        }
       
        this.expression = expression;
        URITemplate._cache[expression] = this;
        return this;
    },
    Data = function(data) {
        this.data = data;
        this.cache = {};
    },
    p = URITemplate.prototype,
    operators = {
        // Simple string expansion
        '' : {
            prefix: "",
            separator: ",",
            named: false,
            empty_name_separator: false,
            encode : "encode"
        },
        // Reserved character strings
        '+' : {
            prefix: "",
            separator: ",",
            named: false,
            empty_name_separator: false,
            encode : "encodeReserved"
        },
        // Fragment identifiers prefixed by "#"
        '#' : {
            prefix: "#",
            separator: ",",
            named: false,
            empty_name_separator: false,
            encode : "encodeReserved"
        },
        // Name labels or extensions prefixed by "."
        '.' : {
            prefix: ".",
            separator: ".",
            named: false,
            empty_name_separator: false,
            encode : "encode"
        },
        // Path segments prefixed by "/"
        '/' : {
            prefix: "/",
            separator: "/",
            named: false,
            empty_name_separator: false,
            encode : "encode"
        },
        // Path parameter name or name=value pairs prefixed by ";"
        ';' : {
            prefix: ";",
            separator: ";",
            named: true,
            empty_name_separator: false,
            encode : "encode"
        },
        // Query component beginning with "?" and consisting
        // of name=value pairs separated by "&"; an
        '?' : {
            prefix: "?",
            separator: "&",
            named: true,
            empty_name_separator: true,
            encode : "encode"
        },
        // Continuation of query-style &name=value pairs
        // within a literal query component.
        '&' : {
            prefix: "&",
            separator: "&",
            named: true,
            empty_name_separator: true,
            encode : "encode"
        }

        // The operator characters equals ("="), comma (","), exclamation ("!"),
        // at sign ("@"), and pipe ("|") are reserved for future extensions.
    };
   
URITemplate._cache = {};

URI.encode = function(string) {
    return encodeURIComponent(string).replace(/[!'()*]/g, escape);
};
URI.encodeReserved = function(string) {
    return encodeURIComponent(string).replace(URI.characters.reserved.encode.expression, function(c) {
        return URI.characters.reserved.encode.map[c];
    });
};
URI.characters = {
    reserved: {
        encode: {
            // RFC3986 2.1: For consistency, URI producers and normalizers should
            // use uppercase hexadecimal digits for all percent-encodings.
            expression: /%(21|23|24|26|27|28|29|2A|2B|2C|2F|3A|3B|3D|3F|40|5B|5D)/ig,
            map: {
                // gen-delims
                "%3A": ":",
                "%2F": "/",
                "%3F": "?",
                "%23": "#",
                "%5B": "[",
                "%5D": "]",
                "%40": "@",
                // sub-delims
                "%21": "!",
                "%24": "$",
                "%26": "&",
                "%27": "'",
                "%28": "(",
                "%29": ")",
                "%2A": "*",
                "%2B": "+",
                "%2C": ",",
                "%3B": ";",
                "%3D": "="
            }
        }
    }
};
window.URI = URI;
window.URITemplate = URITemplate;


// storage for already parsed templates
URITemplate._cache = {};
// pattern to identify expressions [operator, variable-list] in template
URITemplate.EXPRESSION_PATTERN = /\{([^a-zA-Z0-9%_]?)([^\}]+)(\}|$)/g;
// pattern to identify variables [name, explode, maxlength] in variable-list
URITemplate.VARIABLE_PATTERN = /^([^*:]+)((\*)|:(\d+))?$/;
// pattern to verify variable name integrity
URITemplate.VARIABLE_NAME_PATTERN = /[^a-zA-Z0-9%_]/;

URITemplate.expand = function(expression, data) {
    var options = operators[expression.operator],
        variables = expression.variables,
        buffer = [],
        d, variable, i, l, value, type;

    for (i = 0; variable = variables[i]; i++) {
        // fetch simplified data source
        d = data.get(variable.name);
        if (!d.val.length) {
            if (d.type) {
                // empty variable
                buffer.push("");
            }
           
            continue;
        }
       
        type = options.named ? "Named" : "Unnamed";

        buffer.push(URITemplate["expand" + type](
            d,
            options,
            variable.explode,
            variable.explode && options.separator || ",",
            variable.maxlength,
            variable.name
        ));
    }
   
    if (buffer.length) {
        return options.prefix + buffer.join(options.separator);
    } else {
        return "";
    }    
};

URITemplate.expandNamed = function(d, options, explode, separator, length, name) {
    var result = "",
        encode = options.encode,
        empty_name_separator = options.empty_name_separator,
        _encode = !d[encode].length,
        _name = d.type === 2 ? '': URI[encode](name),
        _value,
        i, l;

    for (i = 0, l = d.val.length; i < l; i++) {
        if (length) {
            _value = URI[encode](d.val[i][1].substring(0, length));
            if (d.type === 2) {
                _name = URI[encode](d.val[i][0].substring(0, length));
            }
        } else if (_encode) {
            _value = URI[encode](d.val[i][1]);
            if (d.type === 2) {
                _name = URI[encode](d.val[i][0]);
                d[encode].push([_name, _value]);
            } else {
                d[encode].push([undefined, _value]);
            }

        } else {
            _value = d[encode][i][1];
            if (d.type === 2) {
                _name = d.name[encode][i][0];
            }
        }
       
        if (result) {
            result += separator;
        }
       
        if (!explode) {
            if (!i) {
                // first element, so prepend variable name
                result += URI[encode](name) + (empty_name_separator || _value ? "=" : "");
            }
           
            if (d.type === 2) {
                result += _name + ",";
            }
           
            result += _value;
        } else {
            result += _name + (empty_name_separator || _value ? "=" : "") + _value;
        }
    }
   
    return result;
};
URITemplate.expandUnnamed = function(d, options, explode, separator, length, name) {
    var result = "",
        encode = options.encode,
        empty_name_separator = options.empty_name_separator,
        _encode = !d[encode].length,
        _name,
        _value,
        i, l;

    for (i = 0, l = d.val.length; i < l; i++) {
        if (length) {
            _value = URI[encode](d.val[i][1].substring(0, length));
        } else if (_encode) {
            _value = URI[encode](d.val[i][1]);
            d[encode].push([
                d.type === 2 ? URI[encode](d.val[i][0]) : undefined,
                _value
            ]);
        } else {
            _value = d[encode][i][1];
        }
       
        if (result) {
            result += separator;
        }
       
        if (d.type === 2) {
            if (length) {
                _name = URI[encode](d.val[i][0].substring(0, length));
            } else {
                _name = d[encode][i][0];
            }
           
            result += _name;
            if (explode) {
                result += (empty_name_separator || _value ? "=" : "");
            } else {
                result += ",";
            }
        }
       
        result += _value;
    }
   
    return result;
};

p.expand = function(data) {
    var result = "";
   
    if (!this.parts || !this.parts.length) {
        this.parse();
    }
   
    if (!(data instanceof Data)) {
        data = new Data(data);
    }
   
    for (var i = 0, l = this.parts.length; i < l; i++) {
        result += typeof this.parts[i] === "string"
            ? this.parts[i]
            : URITemplate.expand(this.parts[i], data);
    }
   
    return result;
};
p.parse = function() {
    var expression = this.expression,
        ePattern = URITemplate.EXPRESSION_PATTERN,
        vPattern = URITemplate.VARIABLE_PATTERN,
        nPattern = URITemplate.VARIABLE_NAME_PATTERN,
        parts = [],
        pos = 0,
        variables,
        eMatch,
        vMatch;
   
    ePattern.lastIndex = 0;
    while (true) {
        eMatch = ePattern.exec(expression);
        if (eMatch === null) {
            // push trailing literal
            parts.push(expression.substring(pos));
            break;
        } else {
            // push leading literal
            parts.push(expression.substring(pos, eMatch.index));
            pos = eMatch.index + eMatch[0].length;
        }
       
        if (!operators[eMatch[1]]) {
            throw new Error('Unknown Operator "' + eMatch[1]  + '" in "' + eMatch[0] + '"');
        } else if (!eMatch[3]) {
            throw new Error('Unclosed Expression "' + eMatch[0]  + '"');
        }
       
        // parse variable-list
        variables = eMatch[2].split(',');
        for (var i = 0, l = variables.length; i < l; i++) {
            vMatch = variables[i].match(vPattern);
            if (vMatch === null) {
                throw new Error('Invalid Variable "' + variables[i] + '" in "' + eMatch[0] + '"');
            }
           
            if (vMatch[1].match(nPattern)) {
                throw new Error('Invalid Variable Name "' + vMatch[1] + '" in "' + eMatch[0] + '"');
            }
           
            variables[i] = {
                name: vMatch[1],
                explode: !!vMatch[3],
                maxlength: vMatch[4] && parseInt(vMatch[4], 10)
            };
        }
       
        if (!variables.length) {
            throw new Error('Expression Missing Variable(s) "' + eMatch[0] + '"');
        }
       
        parts.push({
            expression: eMatch[0],
            operator: eMatch[1],
            variables: variables
        });
    }
   
    if (!parts.length) {
        // template doesn't contain any expressions
        parts.push(expression);
    }
   
    this.parts = parts;
    return this;
};

// simplify data structures
Data.prototype.get = function(key) {
    var data = this.data,
        d = {
            type: 0,
            val: [],
            encode: [],
            encodeReserved: []
        },
        i, l, value;
   
    if (this.cache[key] !== undefined) {
        // we've already processed this key
        return this.cache[key];
    }
   
    this.cache[key] = d;
   
    if (String(Object.prototype.toString.call(data)) === "[object Function]") {
        // data itself is a callback
        value = data(key);
    } else if (String(Object.prototype.toString.call(data[key])) === "[object Function]") {
        // data is a map of callbacks
        value = data[key](key);
    } else {
        // data is a map of data
        value = data[key];
    }
   
    // generalize input
    if (value === undefined || value === null) {
        return d;
    } else if (String(Object.prototype.toString.call(value)) === "[object Array]") {
        for (i = 0, l = value.length; i < l; i++) {
            if (value[i] !== undefined && value[i] !== null) {
                d.val.push([undefined, String(value[i])]);
            }
        }
       
        if (d.val.length) {
            d.type = 3; // array
        }
    } else if (String(Object.prototype.toString.call(value)) === "[object Object]") {
        for (i in value) {
            if (hasOwn.call(value, i) && value[i] !== undefined && value[i] !== null) {
                d.val.push([i, String(value[i])]);
            }
        }
       
        if (d.val.length) {
            d.type = 2; // array
        }
    } else {
        d.type = 1; // primitive
        d.val.push([undefined, String(value)]);
    }
   
    return d;
};



})();

window._values = {
            "count" : ["one", "two", "three"],
            "dom" : ["example", "com"],
            "dub" : "me/too",
            "hello" : "Hello World!",
            "half" : "50%",
            "var" : "value",
            "who" : "fred",
            "base" : "http://example.com/home/",
            "path" : "/foo/bar",
            "list" : ["red", "green", "blue"],
            "keys" : {
                "semi" : ";",
                "dot" : ".",
                "comma" : ","
            },
            "v" : "6",
            "x" : "1024",
            "y" : "768",
            "empty" : "",
            "empty_keys" : [],
            "undef" : null
        };

</script>

Test runner

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Testing in unknown unknown
Test Ops/sec
Simple URITemplate
var expression = "{count}";
var template = new URITemplate(expression);
var expanded = template.expand(window._values);
delete URITemplate._cache[expression];
pending…
Simple uri-templates
var expression = "{count}";
var template = uritemplate(expression);
var expanded = template.expand(window._values);
 
pending…
Complex URITemplate
var expression = "{var}string{hello}string{half}stringO{empty}XstringO{undef}Xstring{x,y}string{x,hello,y}string?{x,empty}string?{x,undef}string?{undef,y}string{var:3}string{var:30}string{list}string{list*}string{keys}string{keys*}string{count}string{count*}string{/count}string{/count*}string{;count}string{;count*}string{?count}string{?count*}string{&count*}string";
var template = new URITemplate(expression);
var expanded = template.expand(window._values);
delete URITemplate._cache[expression];
pending…
Complex uri-template
var expression = "{var}string{hello}string{half}stringO{empty}XstringO{undef}Xstring{x,y}string{x,hello,y}string?{x,empty}string?{x,undef}string?{undef,y}string{var:3}string{var:30}string{list}string{list*}string{keys}string{keys*}string{count}string{count*}string{/count}string{/count*}string{;count}string{;count*}string{?count}string{?count*}string{&count*}string";
var template = uritemplate(expression);
var expanded = template.expand(window._values);
pending…

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