first commit

index.js

@@ -0,0 +1,66 @@
+var postcss = require('postcss');
+
+module.exports = postcss.plugin('postcss-partial-process', ({
+    startComment = 'start postcss-partial-process',
+    endComment = 'end postcss-partial-process',
+    removeComments = false,
+    plugins = []
+} = {}) => {
+    return root => {
+        let processing = false;
+        let partialRoot = null;
+        let promises = [];
+
+        let end = (callback) => {
+            promises.push(
+                postcss(plugins).process(partialRoot, {
+                    from: undefined
+                }).then(callback)
+            );
+        };
+
+        root.each(node => {
+            let starting = false;
+            let ending = false;
+
+            if (node.type === 'comment') {
+                let matches = node.toString().match(/\/\*\s*(.*?)\s*\*\//, '');
+                matches = matches || [];
+                if (matches.length > 1) {
+                    starting = !processing && matches[1] === startComment;
+                    ending = processing && matches[1] === endComment;
+                }
+            }
+
+            if (ending) {
+                end(result => {
+                    node.before(result.root);
+                    if (removeComments) {
+                        node.remove();
+                    }
+                });
+                processing = false;
+            }
+
+            if (processing) {
+                partialRoot.append(node);
+            }
+
+            if (starting) {
+                partialRoot = postcss.root();
+                if (removeComments) {
+                    node.remove();
+                }
+                processing = true;
+            }
+        });
+
+        if (processing) {
+            end(result => {
+                root.append(result.root);
+            });
+        }
+
+        return Promise.all(promises);
+    };
+});