Promote circle ci changes to master

.github/CODEOWNERS.md

@@ -0,0 +1 @@
+@scratchfoundation/scratch-engineering

.github/workflows/build.yml

@@ -0,0 +1,25 @@
+name: build-scratch-analysis
+on: 
+    push:
+jobs:
+    setup:
+      runs-on: ubuntu-latest
+      steps:
+        - uses: actions/checkout@v2
+        - name: Setup Node.js
+          uses: actions/setup-node@v3
+          with:
+            node-version-file: '.nvmrc'
+        - name: Install Dependencies
+          run: npm ci
+        - name: Run Tests
+          run: npm test
+        - name: Semantic Release
+          if: github.ref_name == 'master'
+          env:
+            NPM_TOKEN: ${{ secrets.NPM_TOKEN }}
+            GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          run: npx --no -- semantic-release
+
+
+

.gitignore

@@ -4,7 +4,6 @@
 ## NPM
 /node_modules
 npm-*
-package-lock.json
 
 ## Code Coverage
 .nyc_output/

.nvmrc

@@ -0,0 +1 @@
+v18

lib/sb2.js

@@ -67,6 +67,28 @@ const extract = function (project, attribute, id, hash) {
     return result;
 };
 
+/**
+ * Extract summary information about backdrops including
+ * count, list of backdrop names and list of backdrop hashes.
+ * Backdrops are a subset of all costumes.
+ * Backdrops are a costumes from the stage object.
+ * @param  {object} project Project object (SB2 format)
+ * @return {object}         Summary information
+ */
+const backdrops = function (project) {
+    let stageCostumes = project.costumes;
+
+    if (!Array.isArray(stageCostumes)) {
+        return {count: 0, id: [], hash: []};
+    }
+
+    return {
+        count: stageCostumes.length,
+        id: stageCostumes.map((sc) => sc.costumeName),
+        hash: stageCostumes.map((sc) => sc.baseLayerMD5)
+    };
+};
+
 /**
  * Extract number of sprites from a project object. Will attempt to ignore
  * "children" which are not sprites.
@@ -227,6 +249,8 @@ module.exports = function (project, callback) {
         costumes: extract(project, 'costumes', 'costumeName', 'baseLayerMD5')
     };
 
+    meta.backdrops = backdrops(project);
+
     meta.cloud = cloud(project, meta.variables.id);
 
     // Sprites

lib/sb3.js

@@ -16,6 +16,31 @@ const scripts = function (targets) {
     };
 };
 
+const costumes = function (targets) {
+    // Storage objects
+    let occurrences = 0;
+    let nameList = [];
+    let hashList = [];
+
+    for (let t in targets) {
+        for (let a in targets[t].costumes) {
+            const costume = targets[t].costumes[a];
+            occurrences++;
+            nameList.push(costume.name);
+
+            let hash = costume.md5ext || `${costume.assetId}.${costume.dataFormat}`;
+            hashList.push(hash);
+        }
+    }
+
+    // field are named this way to keep backward compatibility
+    return {
+        count: occurrences,
+        id: nameList,
+        hash: hashList
+    };
+};
+
 const variables = function (targets, attribute) {
     // Storage objects
     let occurrences = 0;
@@ -92,10 +117,22 @@ const blocks = function (targets) {
     for (let t in targets) {
         for (let a in targets[t].blocks) {
             const block = targets[t].blocks[a];
+            let opcode = block.opcode;
+
+            // Check for primitive blocks which don't have the opcode field
+            if (typeof opcode === 'undefined') {
+                switch (block[0]) {
+                case (12):
+                    opcode = 'data_variable';
+                    break;
+                case (13):
+                    opcode = 'data_listcontents';
+                    break;
+                }
+            }
 
             // Get opcode and check variable manipulation for the presence of
             // cloud variables
-            let opcode = block.opcode;
             if (opcode === 'data_setvariableto' || opcode === 'data_changevariableby') {
                 if (isArgCloudVar(block.fields.VARIABLE[1])) {
                     opcode += '_cloud';
@@ -133,6 +170,10 @@ const metadata = function (meta) {
     return obj;
 };
 
+const stageTargets = function (targets) {
+    return targets.filter((target) => target.isStage);
+};
+
 module.exports = function (project, callback) {
     const meta = {
         scripts: scripts(project.targets),
@@ -141,7 +182,9 @@ module.exports = function (project, callback) {
         lists: variables(project.targets, 'lists'),
         comments: extract(project.targets, 'comments'),
         sounds: extract(project.targets, 'sounds', 'name', 'md5ext'),
-        costumes: extract(project.targets, 'costumes', 'name', 'md5ext'),
+        costumes: costumes(project.targets),
+        // backdrops are costumes on the stage target
+        backdrops: costumes(stageTargets(project.targets)),
         sprites: sprites(project.targets),
         blocks: blocks(project.targets),
         extensions: extensions(project.extensions),