1 files changed, 120 insertions, 0 deletions
diff --git a/b2g/components/TelURIParser.jsm b/b2g/components/TelURIParser.jsm
new file mode 100644
index 000000000..46b0bb8fd
--- /dev/null
+++ b/b2g/components/TelURIParser.jsm
@@ -0,0 +1,120 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+this.EXPORTED_SYMBOLS = ["TelURIParser"];
+
+/**
+ * Singleton providing functionality for parsing tel: and sms: URIs
+ */
+this.TelURIParser = {
+  parseURI: function(scheme, uri) {
+    // https://www.ietf.org/rfc/rfc2806.txt
+    let subscriber = decodeURIComponent(uri.slice((scheme + ':').length));
+
+    if (!subscriber.length) {
+      return null;
+    }
+
+    let number = '';
+    let pos = 0;
+    let len = subscriber.length;
+
+    // visual-separator
+    let visualSeparator = [ ' ', '-', '.', '(', ')' ];
+    let digits = [ '0', '1', '2', '3', '4', '5', '6', '7', '8', '9' ];
+    let dtmfDigits = [ '*', '#', 'A', 'B', 'C', 'D' ];
+    let pauseCharacter = [ 'p', 'w' ];
+
+    // global-phone-number
+    if (subscriber[pos] == '+') {
+      number += '+';
+      for (++pos; pos < len; ++pos) {
+        if (visualSeparator.indexOf(subscriber[pos]) != -1) {
+          number += subscriber[pos];
+        } else if (digits.indexOf(subscriber[pos]) != -1) {
+          number += subscriber[pos];
+        } else {
+          break;
+        }
+      }
+    }
+    // local-phone-number
+    else {
+      for (; pos < len; ++pos) {
+        if (visualSeparator.indexOf(subscriber[pos]) != -1) {
+          number += subscriber[pos];
+        } else if (digits.indexOf(subscriber[pos]) != -1) {
+          number += subscriber[pos];
+        } else if (dtmfDigits.indexOf(subscriber[pos]) != -1) {
+          number += subscriber[pos];
+        } else if (pauseCharacter.indexOf(subscriber[pos]) != -1) {
+          number += subscriber[pos];
+        } else {
+          break;
+        }
+      }
+
+      // this means error
+      if (!number.length) {
+        return null;
+      }
+
+      // isdn-subaddress
+      if (subscriber.substring(pos, pos + 6) == ';isub=') {
+        let subaddress = '';
+
+        for (pos += 6; pos < len; ++pos) {
+          if (visualSeparator.indexOf(subscriber[pos]) != -1) {
+            subaddress += subscriber[pos];
+          } else if (digits.indexOf(subscriber[pos]) != -1) {
+            subaddress += subscriber[pos];
+          } else {
+            break;
+          }
+        }
+
+        // FIXME: ignore subaddress - Bug 795242
+      }
+
+      // post-dial
+      if (subscriber.substring(pos, pos + 7) == ';postd=') {
+        let subaddress = '';
+
+        for (pos += 7; pos < len; ++pos) {
+          if (visualSeparator.indexOf(subscriber[pos]) != -1) {
+            subaddress += subscriber[pos];
+          } else if (digits.indexOf(subscriber[pos]) != -1) {
+            subaddress += subscriber[pos];
+          } else if (dtmfDigits.indexOf(subscriber[pos]) != -1) {
+            subaddress += subscriber[pos];
+          } else if (pauseCharacter.indexOf(subscriber[pos]) != -1) {
+            subaddress += subscriber[pos];
+          } else {
+            break;
+          }
+        }
+
+        // FIXME: ignore subaddress - Bug 795242
+      }
+
+      // area-specific
+      if (subscriber.substring(pos, pos + 15) == ';phone-context=') {
+        pos += 15;
+
+        // global-network-prefix | local-network-prefix | private-prefi
+        number = subscriber.substring(pos, subscriber.length) + number;
+      }
+    }
+
+    // Ignore MWI and USSD codes. See 794034.
+    if (number.match(/[#\*]/) && !number.match(/^[#\*]\d+$/)) {
+      return null;
+    }
+
+    return number || null;
+  }
+};
+