feat: add components

components/component-hashjs.js

@@ -0,0 +1,48 @@
+var COMMENT_HASH_TAG = '//HASH:';
+
+var CollectionUtil = Packages.me.hatter.tools.commons.collection.CollectionUtil;
+
+var __containsCommentHashTag = (list) => {
+  for (var i = (list.size() - 1); i >= 0; i--) {
+    var l = list.get(i);
+    if ($STR(l.trim()) != '') {
+      return l.startsWith(COMMENT_HASH_TAG);
+    }
+  }
+  return false;
+};
+
+var __getDigestJSON = (list) => {
+  var digestJSON = null;
+  if (__containsCommentHashTag(list)) {
+    var last = CollectionUtil.last(list);
+    while ((list.size() > 0) && ($STR(last.trim()) == '')) { CollectionUtil.removeLast(list); last = CollectionUtil.last(list); }
+    if (last.startsWith(COMMENT_HASH_TAG)) {
+      CollectionUtil.removeLast(list);
+      digestJSON = JSON.parse(last.substring(COMMENT_HASH_TAG.length));
+    }
+  }
+  return digestJSON;
+};
+
+var __calcSHA256Hex = (list) => {
+  return $STR($$.digests().sha256().digest($$.bytes($ARR(list).join('\n'))).asHex());
+};
+
+var __checkSHA256 = (list) => {
+  var digestJSON = __getDigestJSON(list);
+  return digestJSON && (digestJSON.SHA256 == __calcSHA256Hex(list));
+};
+
+var checkBytesSHA256 = (bytes) => {
+  return __checkSHA256(bytes.list());
+};
+
+if (typeof exports == 'object') {
+  exports.__containsCommentHashTag = __containsCommentHashTag;
+  exports.__getDigestJSON = __getDigestJSON;
+  exports.__calcSHA256Hex = __calcSHA256Hex;
+  exports.__checkSHA256 = __checkSHA256;
+  exports.COMMENT_HASH_TAG = COMMENT_HASH_TAG;
+  exports.checkBytesSHA256 = checkBytesSHA256;
+}