jshint/env/wsh.js

   1 /*jshint evil: true, shadow: true, wsh: true */
   2 /*global JSHINT: false */
   3
   4 (function() {
   5         function readFile(path, charset) {
   6                 try {
   7                         var stream = WScript.CreateObject("ADODB.Stream");
   8
   9                         stream.Charset = charset;
  10                         stream.Open();
  11                         stream.LoadFromFile(path);
  12
  13                         var result = stream.ReadText();
  14                         stream.close();
  15
  16                         return result;
  17                 } catch (ex) {
  18                         return null;
  19                 }
  20         }
  21
  22         var formatters = {
  23                 errors: function(errors, lines) {
  24                         for (var i = 0; i < errors.length; i++) {
  25                                 var error = errors[i];
  26
  27                                 if (!error) continue;
  28
  29                                 if (i) lines.push("");
  30
  31                                 lines.push("Line " + error.line + " character " + error.character + ": " + error.reason);
  32
  33                                 if (error.evidence) lines.push("    " + error.evidence.replace(/^\s*((?:[\S\s]*\S)?)\s*$/, "$1"));
  34                         }
  35                 },
  36
  37                 implieds: function(implieds, lines) {
  38                         lines.push("Implied globals:");
  39
  40                         var globals = {};
  41
  42                         for (var i = 0; i < implieds.length; i++) {
  43                                 var item = implieds[i];
  44
  45                                 if (!(item.name in globals)) globals[item.name] = [];
  46
  47                                 globals[item.name].push(item.line);
  48                         }
  49
  50                         for (var name in globals) {
  51                                 lines.push("    " + name + ": " + globals[name].join(", "));
  52                         }
  53                 },
  54
  55                 unused: function(unused, lines) {
  56                         lines.push("Unused variables:");
  57
  58                         var func, names = {};
  59
  60                         for (var i = 0; i < unused.length; i++) {
  61                                 var item = unused[i];
  62
  63                                 func = item["function"];
  64
  65                                 if (!(func in names)) names[func] = [];
  66
  67                                 names[func].push(item.name + " (" + item.line + ")");
  68                         }
  69
  70                         for (func in names) {
  71                                 lines.push("    " + func + ": " + names[func].join(", "));
  72                         }
  73                 }
  74         };
  75
  76         var scriptName = WScript.ScriptName;
  77         var scriptPath = WScript.ScriptFullName;
  78
  79         scriptPath = scriptPath.substr(0, scriptPath.length - scriptName.length);
  80
  81         // load JSHint if the two scripts have not been concatenated
  82         if (typeof JSHINT === "undefined") {
  83                 eval(readFile(scriptPath + "..\\jshint.js", 'utf-8'));
  84
  85                 if (typeof JSHINT === "undefined") {
  86                         WScript.StdOut.WriteLine("ERROR: Could not find 'jshint.js'.");
  87
  88                         WScript.Quit(-2);
  89                 }
  90         }
  91
  92         var globals = {};
  93         var options = {};
  94         var named = WScript.Arguments.Named;
  95         var unnamed = WScript.Arguments.Unnamed;
  96
  97         if (unnamed.length !== 1) {
  98                 WScript.StdOut.WriteLine("    usage: cscript " + scriptName + " [options] <script>");
  99                 WScript.StdOut.WriteLine("");
 100                 WScript.StdOut.WriteLine("Scans the specified script with JSHint and reports any errors encountered.  If");
 101                 WScript.StdOut.WriteLine("the script name is \"-\", it will be read from standard input instead.");
 102                 WScript.StdOut.WriteLine("");
 103                 WScript.StdOut.WriteLine("JSHint configuration options can be passed in via optional, Windows-style");
 104                 WScript.StdOut.WriteLine("arguments.  For example:");
 105                 WScript.StdOut.WriteLine("    cscript " + scriptName + " /jquery:true myscript.js");
 106                 WScript.StdOut.WriteLine("    cscript " + scriptName + " /global:QUnit:false,_:false,foo:true foo.js");
 107                 WScript.StdOut.WriteLine("");
 108                 WScript.StdOut.WriteLine("By default, we assume that your file is encoded if UTF-8. You can change that");
 109                 WScript.StdOut.WriteLine("by providing a custom charset option:");
 110                 WScript.StdOut.WriteLine("    cscript " + scriptName + " /charset:ascii myscript.js");
 111
 112                 WScript.Quit(-1);
 113         }
 114
 115         var script = unnamed(0);
 116
 117         if (script === "-") {
 118                 try {
 119                         script = WScript.StdIn.ReadAll();
 120                 } catch (ex) {
 121                         script = null;
 122                 }
 123         } else {
 124                 script = readFile(script, named('charset') || 'utf-8');
 125         }
 126
 127         if (script === null) {
 128                 WScript.StdOut.WriteLine("ERROR: Could not read target script.");
 129
 130                 WScript.Quit(2);
 131         }
 132
 133         for (var etor = new Enumerator(named); !etor.atEnd(); etor.moveNext()) {
 134                 var option = etor.item();
 135                 var value = named(option);
 136
 137                 if (option === "global") {
 138                         value = value.split(",");
 139
 140                         for (var i = 0; i < value.length; i++) {
 141                                 var name = value[i].split(":");
 142
 143                                 if (name.length === 1 || name[1] === "false") {
 144                                         globals[name[0]] = false;
 145                                 } else if (name[1] === "true") {
 146                                         globals[name[0]] = true;
 147                                 } else {
 148                                         WScript.StdOut.WriteLine("Unrecognized value for global: " + name[0]);
 149                                         WScript.StdOut.WriteLine("Must be \"true\", \"false\", or omitted.");
 150
 151                                         WScript.Quit(-1);
 152                                 }
 153                         }
 154                 } else {
 155                         options[option] = value === "true" ? true : value === "false" ? false : value;
 156                 }
 157         }
 158
 159         JSHINT(script, options, globals);
 160
 161         var data = JSHINT.data();
 162         var lines = [];
 163
 164         for (var formatter in formatters) {
 165                 if (data[formatter]) {
 166                         if (lines.length) lines.push("");
 167
 168                         formatters[formatter](data[formatter], lines);
 169                 }
 170         }
 171
 172         if (lines.length) {
 173                 for (var i = 0; i < lines.length; i++) {
 174                         WScript.StdOut.WriteLine(lines[i]);
 175                 }
 176
 177                 WScript.Quit(1);
 178         } else {
 179                 WScript.Quit(0);
 180         }
 181 }());