Update sprintf and vsprintf to make use of the sprintf-js package.

The owner of the current implementation of sprintf has continued development and improved the implementation. It makes sense to use of his package on npm instead of using an out-of-date copy.

package.json

@@ -60,5 +60,7 @@
       "s": true
     }
   },
-  "dependencies": {}
+  "dependencies": {
+    "sprintf-js": "^1.0.3"
+  }
 }

sprintf.js

@@ -1,124 +1 @@
-// sprintf() for JavaScript 0.7-beta1
-// http://www.diveintojavascript.com/projects/javascript-sprintf
-//
-// Copyright (c) Alexandru Marasteanu <alexaholic [at) gmail (dot] com>
-// All rights reserved.
-var strRepeat = require('./helper/strRepeat');
-var toString = Object.prototype.toString;
-var sprintf = (function() {
-  function get_type(variable) {
-    return toString.call(variable).slice(8, -1).toLowerCase();
-  }
-
-  var str_repeat = strRepeat;
-
-  var str_format = function() {
-    if (!str_format.cache.hasOwnProperty(arguments[0])) {
-      str_format.cache[arguments[0]] = str_format.parse(arguments[0]);
-    }
-    return str_format.format.call(null, str_format.cache[arguments[0]], arguments);
-  };
-
-  str_format.format = function(parse_tree, argv) {
-    var cursor = 1, tree_length = parse_tree.length, node_type = '', arg, output = [], i, k, match, pad, pad_character, pad_length;
-    for (i = 0; i < tree_length; i++) {
-      node_type = get_type(parse_tree[i]);
-      if (node_type === 'string') {
-        output.push(parse_tree[i]);
-      }
-      else if (node_type === 'array') {
-        match = parse_tree[i]; // convenience purposes only
-        if (match[2]) { // keyword argument
-          arg = argv[cursor];
-          for (k = 0; k < match[2].length; k++) {
-            if (!arg.hasOwnProperty(match[2][k])) {
-              throw new Error(sprintf('[_.sprintf] property "%s" does not exist', match[2][k]));
-            }
-            arg = arg[match[2][k]];
-          }
-        } else if (match[1]) { // positional argument (explicit)
-          arg = argv[match[1]];
-        }
-        else { // positional argument (implicit)
-          arg = argv[cursor++];
-        }
-
-        if (/[^s]/.test(match[8]) && (get_type(arg) != 'number')) {
-          throw new Error(sprintf('[_.sprintf] expecting number but found %s', get_type(arg)));
-        }
-        switch (match[8]) {
-          case 'b': arg = arg.toString(2); break;
-          case 'c': arg = String.fromCharCode(arg); break;
-          case 'd': arg = parseInt(arg, 10); break;
-          case 'e': arg = match[7] ? arg.toExponential(match[7]) : arg.toExponential(); break;
-          case 'f': arg = match[7] ? parseFloat(arg).toFixed(match[7]) : parseFloat(arg); break;
-          case 'o': arg = arg.toString(8); break;
-          case 's': arg = ((arg = String(arg)) && match[7] ? arg.substring(0, match[7]) : arg); break;
-          case 'u': arg = Math.abs(arg); break;
-          case 'x': arg = arg.toString(16); break;
-          case 'X': arg = arg.toString(16).toUpperCase(); break;
-        }
-        arg = (/[def]/.test(match[8]) && match[3] && arg >= 0 ? '+'+ arg : arg);
-        pad_character = match[4] ? match[4] == '0' ? '0' : match[4].charAt(1) : ' ';
-        pad_length = match[6] - String(arg).length;
-        pad = match[6] ? str_repeat(pad_character, pad_length) : '';
-        output.push(match[5] ? arg + pad : pad + arg);
-      }
-    }
-    return output.join('');
-  };
-
-  str_format.cache = {};
-
-  str_format.parse = function(fmt) {
-    var _fmt = fmt, match = [], parse_tree = [], arg_names = 0;
-    while (_fmt) {
-      if ((match = /^[^\x25]+/.exec(_fmt)) !== null) {
-        parse_tree.push(match[0]);
-      }
-      else if ((match = /^\x25{2}/.exec(_fmt)) !== null) {
-        parse_tree.push('%');
-      }
-      else if ((match = /^\x25(?:([1-9]\d*)\$|\(([^\)]+)\))?(\+)?(0|'[^$])?(-)?(\d+)?(?:\.(\d+))?([b-fosuxX])/.exec(_fmt)) !== null) {
-        if (match[2]) {
-          arg_names |= 1;
-          var field_list = [], replacement_field = match[2], field_match = [];
-          if ((field_match = /^([a-z_][a-z_\d]*)/i.exec(replacement_field)) !== null) {
-            field_list.push(field_match[1]);
-            while ((replacement_field = replacement_field.substring(field_match[0].length)) !== '') {
-              if ((field_match = /^\.([a-z_][a-z_\d]*)/i.exec(replacement_field)) !== null) {
-                field_list.push(field_match[1]);
-              }
-              else if ((field_match = /^\[(\d+)\]/.exec(replacement_field)) !== null) {
-                field_list.push(field_match[1]);
-              }
-              else {
-                throw new Error('[_.sprintf] huh?');
-              }
-            }
-          }
-          else {
-            throw new Error('[_.sprintf] huh?');
-          }
-          match[2] = field_list;
-        }
-        else {
-          arg_names |= 2;
-        }
-        if (arg_names === 3) {
-          throw new Error('[_.sprintf] mixing positional and named placeholders is not (yet) supported');
-        }
-        parse_tree.push(match);
-      }
-      else {
-        throw new Error('[_.sprintf] huh?');
-      }
-      _fmt = _fmt.substring(match[0].length);
-    }
-    return parse_tree;
-  };
-
-  return str_format;
-})();
-
-module.exports = sprintf;
+module.exports = require('sprintf-js').sprintf;

vsprintf.js

@@ -1,6 +1 @@
-var sprintf = require('./sprintf');
-
-module.exports = function vsprintf(fmt, argv) {
-  argv.unshift(fmt);
-  return sprintf.apply(null, argv);
-};
+module.exports = require('sprintf-js').vsprintf;