cli: basic-integrity plugin bugfix (ref. #66)

plugins/basic-integrity/cli.js

@@ -35,6 +35,7 @@ let binToBase64 = (binary_data) => {
 let getFileIntegrity = async (path, algos) => {
     
     var result = []
+    var content = false
     
     // open the file and get some info on it
     const file = await Deno.open(
@@ -49,7 +50,7 @@ let getFileIntegrity = async (path, algos) => {
         //console.log(`+-- reading: ${path}`)
         
         // initialize
-        var content = new Uint8Array()
+        content = new Uint8Array()
         var buf = new Uint8Array(1000);
         
         // read the first batch
@@ -74,20 +75,6 @@ let getFileIntegrity = async (path, algos) => {
             // read some more
             numread = file.readSync(buf);
         }
-        //console.log('    +-- done.')
-        
-        //console.log('+-- calculating digests')
-        for (const algo of algos) {
-            //console.log(`    +-- ${algo}`)
-            var digest = algo.toLowerCase().replace('-', '') + '-' + binToBase64(await crypto.subtle.digest(algo, content))
-            //console.log(digest)
-            result.push(digest)
-        }
-        //console.log(`+-- file done: ${path}`)
-        
-    // we are not working with a file
-    } else {
-        result = false;
     }
     
     // putting this in a try-catch block as the file
@@ -97,6 +84,20 @@ let getFileIntegrity = async (path, algos) => {
         await file.close();
     } catch (BadResource) {}
     
+    // did we get any content?
+    if (typeof content != "boolean") {
+        for (const algo of algos) {
+            //console.log(`    +-- ${algo}`)
+            var digest = algo.toLowerCase().replace('-', '') + '-' + binToBase64(await crypto.subtle.digest(algo, content))
+            //console.log(digest)
+            result.push(digest)
+        }
+    // no content means not a file
+    } else {
+        // so no result
+        result = false
+    }
+    
     // return the result
     return result
 }