1 files changed, 63 insertions, 0 deletions
diff --git a/src/scripts/common.js b/src/scripts/common.js
new file mode 100644
index 0000000..bd516c8
--- /dev/null
+++ b/src/scripts/common.js
@@ -0,0 +1,63 @@
+'use strict';
+
+// ----------------- Pattern Check ------------------
+
+function checkPattern(pattern, type) {
+  
+  const pat = pattern.value;
+
+  if (!pat) {
+    pattern.classList.add('invalid');
+    pattern.focus();
+    showResult(chrome.i18n.getMessage('errorEmpty'), true);
+    return;
+  }  
+
+  const patternTypeSet = {
+    '1': 'wildcard',
+    '2': 'regex'
+  }
+
+  let regex;
+
+  switch (patternTypeSet[type.value]) {
+
+    // RegEx
+    case 'regex':
+      try { regex = new RegExp(pat); }
+      catch (e) {
+        pattern.classList.add('invalid');
+        showResult(e.message, true);
+        return false;
+      }
+      break;
+
+    // wildcard
+    default:
+      if (pat.includes('/')) {
+        pattern.classList.add('invalid');
+        showResult(chrome.i18n.getMessage('errorSlash'), true);
+        return false;
+      }
+
+      try { regex = new RegExp(Utils.wildcardToRegExp(pat)); }
+      catch (e) {
+        pattern.classList.add('invalid');
+        showResult(e.message, true);
+        return false;
+      }
+  }  
+  
+  // --- pattern is valid
+  return regex;
+}
+
+
+
+
+function showResult(text, fail) {
+
+  fail && result.classList.add('alert');
+  result.textContent = text;
+  result.classList.remove('hide');
+}
+\ No newline at end of file