ensure that URLs of inlined imports are recalculated relative to current file (#44)

Author: jessebluemr

index.js

@@ -27,7 +27,10 @@ module.exports = function gulpCleanCSS(options, callback) {
       options.sourceMap = JSON.parse(JSON.stringify(file.sourceMap));
 
     let contents = file.contents ? file.contents.toString() : '';
-    let pass = options.rebaseTo ? {[file.path]: {styles: contents}} : contents;
+    let pass = {[file.path]: {styles: contents}};
+    if (!options.rebaseTo && options.rebase!==false){
+        options.rebaseTo = path.dirname(file.path);
+    }
 
     new CleanCSS(options).minify(pass, function (errors, css) {
 

test/test.js

@@ -226,7 +226,7 @@ describe('gulp-clean-css: base functionality', function () {
     .pipe(cleanCSS({debug: true}, function (details) {
       expect(details.warnings).to.exist &&
       expect(details.warnings.length).to.equal(1) &&
-      expect(details.warnings[0]).to.equal('Missing \'}\' at 1:14.');
+      expect(details.warnings[0]).to.equal('Missing \'}\' at fixtures/test.css:1:14.');
     }))
     .on('data', function (file) {
       i += 1;
@@ -305,4 +305,30 @@ describe('gulp-clean-css: rebase', function () {
     })
     .once('end', done);
   });
+  
+  it('should rebase to current relative file location - relative imports are resolved like in the browser', function (done) {
+
+    gulp.src(['test/fixtures/rebasing/subdir/import.css'])
+    .pipe(cleanCSS({}))
+    .on('data', function (file) {
+
+      let expected = `
+        p.imported_nested{background:url(../otherdir/nestedsub/nested.png)}
+        p.imported_same{background:url(../otherdir/imported.png)}
+        p.imported_parent{background:url(../parent.png)}
+        p.imported_other{background:url(../othersub/inother.png)}
+        p.imported_absolute{background:url(/inroot.png)}
+        p.insub_same{background:url(insub.png)}
+        p.insub_child{background:url(child/child.png)}
+        p.insub_parent{background:url(../parent.png)}
+        p.insub_other{background:url(../othersub/inother.png)}
+        p.insub_absolute{background:url(/inroot.png)}
+        p.import{background:url(import.png)}`;
+
+      let actual = file.contents.toString();
+
+      expect(actual).to.equalIgnoreSpaces(expected)
+    })
+    .once('end', done);
+  });
 });