2 files changed, 47 insertions, 2 deletions
diff --git a/lib/utils/links.js b/lib/utils/links.js
index 808d711..6606bbf 100644
--- a/lib/utils/links.js
+++ b/lib/utils/links.js
@@ -1,6 +1,11 @@
 var url = require('url');
 var path = require('path');
 
+// Is the link an external link
+var isExternal = function(href) {
+    return Boolean(url.parse(href).protocol);
+};
+
 // Return true if the link is relative
 var isRelative = function(href) {
     var parsed = url.parse(href);
@@ -26,8 +31,22 @@ var toAbsolute = function(_href, dir, outdir) {
     return _href;
 };
 
+// Join links
+
+var join = function() {
+    var _href = path.join.apply(path, arguments);
+
+    if (process.platform === 'win32') {
+        _href = _href.replace(/\\/g, '/');
+    }
+
+    return _href;
+};
+
 
 module.exports = {
     isRelative: isRelative,
-    toAbsolute: toAbsolute
-};
-\ No newline at end of file
+    isExternal: isExternal,
+    toAbsolute: toAbsolute,
+    join: join
+};
diff --git a/lib/utils/string.js b/lib/utils/string.js
new file mode 100644
index 0000000..417d7af
--- /dev/null
+++ b/lib/utils/string.js
@@ -0,0 +1,26 @@
+var _ = require("lodash");
+
+function escapeShellArg(arg) {
+    var ret = '';
+
+    ret = arg.replace(/"/g, '\\"');
+
+    return "\"" + ret + "\"";
+}
+
+function optionsToShellArgs(options) {
+    return _.chain(options)
+    .map(function(value, key) {
+        if (value == null || value == false) return null;
+        if (value == true) return key;
+        return key+"="+escapeShellArg(value);
+    })
+    .compact()
+    .value()
+    .join(" ");
+}
+
+module.exports = {
+    escapeShellArg: escapeShellArg,
+    optionsToShellArgs: optionsToShellArgs
+};