process directories

cli/lib/png2src.js

@@ -343,16 +343,22 @@ function runAll(files, opts) {
 
     let output = { "sprites": [] };
     for (let ii = 0; ii < files.length; ++ii) {
-        const file = files[ii];
-
+        const filePath = files[ii];
         try {
-            if (ii > 0) {
-                console.log();
+            const filePaths = !fs.statSync(filePath).isDirectory() ? [filePath] : 
+                               fs.readdirSync(filePath)
+                                 .filter(file => path.extname(file).toLowerCase() === '.png')
+                                 .map(file => path.join(filePath, file));
+
+            for (let iii = 0; iii < filePaths.length; ++iii) {
+                const pngFile = filePaths[iii];
+                if (ii | iii > 0) {
+                    console.log();
+                }
+                output.sprites.push(run(pngFile));
             }
-
-            output.sprites.push(run(file));
         } catch (error) {
-            throw new Error("Error processing " + file + ": " + error.message);
+            throw new Error("Error processing " + filePath + ": " + error.message);
         }
     }
 

cli/lib/test/data_ok/smile_7x7_1BPP.png

@@ -0,0 +1 @@
+../data/smile_7x7_1BPP.png

cli/lib/test/data_ok/smile_7x7_2BPP.png

@@ -0,0 +1 @@
+../data/smile_7x7_2BPP.png

cli/lib/test/data_ok/smile_8x8_1BPP.png

@@ -0,0 +1 @@
+../data/smile_8x8_1BPP.png

cli/lib/test/data_ok/smile_8x8_2BPP.png

@@ -0,0 +1 @@
+../data/smile_8x8_2BPP.png

cli/lib/test/png2src.test.js

@@ -169,7 +169,7 @@ describe("PNG2SRC", () => {
         runAll(["/invalid/path"], {
         lang: "rust",
         output: "-",
-      })).toThrowError(/Error processing \/invalid\/path: ENOENT: no such file or directory, open '\/invalid\/path'/);
+      })).toThrowError(/Error processing \/invalid\/path: ENOENT: no such file or directory, stat '\/invalid\/path'/);
     });
 
     it("should console log one sprite", () => {
@@ -218,5 +218,20 @@ describe("PNG2SRC", () => {
       expect(console.log).toHaveBeenCalledTimes(3);
       expect(fs.writeFileSync).toHaveBeenCalledTimes(1);
     });
+
+    it("should process directories", () => {
+      runAll(
+        [
+          __dirname + "/data_ok",
+        ],
+        {
+          lang: "c",
+          output: "output.h",
+        }
+      );
+
+      expect(console.log).toHaveBeenCalledTimes(3);
+      expect(fs.writeFileSync).toHaveBeenCalledTimes(1);
+    });
   });
 });