add fromString argument to `UglifyJS.minify` (allows to pass the source

code, instead of file names, as first argument).

close #17

2 files changed, 12 insertions, 2 deletions

diff --git a/README.md b/README.md
index 8cf0ba42..f519c119 100644
--- a/README.md
+++ b/README.md
@@ -322,6 +322,7 @@ There's a single toplevel function which combines all the steps.  If you
 don't need additional customization, you might want to go with `minify`.
 Example:
 
+    // see "fromString" below if you need to pass code instead of file name
     var result = UglifyJS.minify("/path/to/file.js");
     console.log(result.code); // minified output
 
@@ -354,6 +355,12 @@ can use the `inSourceMap` argument:
 The `inSourceMap` is only used if you also request `outSourceMap` (it makes
 no sense otherwise).
 
+Other options:
+
+- `warnings` (default `false`) — pass `true` to display compressor warnings.
+- `fromString` (default `false`) — if you pass `true` then you can pass
+  JavaScript source code, rather than file names.
+
 We could add more options to `UglifyJS.minify` — if you need additional
 functionality please suggest!
 
diff --git a/tools/node.js b/tools/node.js
index 07c3bfae..6a21710a 100644
--- a/tools/node.js
+++ b/tools/node.js
@@ -66,6 +66,7 @@ exports.minify = function(files, options) {
     options = UglifyJS.defaults(options, {
         outSourceMap : null,
         inSourceMap  : null,
+        fromString   : false,
         warnings     : false,
     });
     if (typeof files == "string")
@@ -74,9 +75,11 @@ exports.minify = function(files, options) {
     // 1. parse
     var toplevel = null;
     files.forEach(function(file){
-        var code = fs.readFileSync(file, "utf8");
+        var code = options.fromString
+            ? file
+            : fs.readFileSync(file, "utf8");
         toplevel = UglifyJS.parse(code, {
-            filename: file,
+            filename: options.fromString ? "?" : file,
             toplevel: toplevel
         });
     });