1 files changed, 84 insertions, 0 deletions
diff --git a/comm/mailnews/db/gloda/modules/GlodaUtils.jsm b/comm/mailnews/db/gloda/modules/GlodaUtils.jsm
new file mode 100644
index 0000000000..a2b7fe4174
--- /dev/null
+++ b/comm/mailnews/db/gloda/modules/GlodaUtils.jsm
@@ -0,0 +1,84 @@
+/* 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/. */
+
+const EXPORTED_SYMBOLS = ["GlodaUtils"];
+
+const { MailServices } = ChromeUtils.import(
+  "resource:///modules/MailServices.jsm"
+);
+
+/**
+ * @namespace A holding place for logic that is not gloda-specific and should
+ *  reside elsewhere.
+ */
+var GlodaUtils = {
+  /**
+   * This Regexp is super-complicated and used at least in two different parts of
+   * the code, so let's expose it from one single location.
+   */
+  PART_RE: new RegExp(
+    "^[^?]+\\?(?:/;section=\\d+\\?)?(?:[^&]+&)*part=([^&]+)(?:&[^&]+)*$"
+  ),
+
+  deMime(aString) {
+    return MailServices.mimeConverter.decodeMimeHeader(
+      aString,
+      null,
+      false,
+      true
+    );
+  },
+
+  _headerParser: MailServices.headerParser,
+
+  /**
+   * Parses an RFC 2822 list of e-mail addresses and returns an object with
+   *  4 attributes, as described below.  We will use the example of the user
+   *  passing an argument of '"Bob Smith" <bob@example.com>'.
+   *
+   * This method (by way of nsIMsgHeaderParser) takes care of decoding mime
+   *  headers, but is not aware of folder-level character set overrides.
+   *
+   * count: the number of addresses parsed. (ex: 1)
+   * addresses: a list of e-mail addresses (ex: ["bob@example.com"])
+   * names: a list of names (ex: ["Bob Smith"])
+   * fullAddresses: aka the list of name and e-mail together (ex: ['"Bob Smith"
+   *  <bob@example.com>']).
+   *
+   * This method is a convenience wrapper around nsIMsgHeaderParser.
+   */
+  parseMailAddresses(aMailAddresses) {
+    let addresses = this._headerParser.parseEncodedHeader(aMailAddresses);
+    return {
+      names: addresses.map(a => a.name || null),
+      addresses: addresses.map(a => a.email),
+      fullAddresses: addresses.map(a => a.toString()),
+      count: addresses.length,
+    };
+  },
+
+  /**
+   * MD5 hash a string and return the hex-string result. Impl from nsICryptoHash
+   *  docs.
+   */
+  md5HashString(aString) {
+    let data = [...new TextEncoder().encode(aString)];
+
+    let hasher = Cc["@mozilla.org/security/hash;1"].createInstance(
+      Ci.nsICryptoHash
+    );
+    hasher.init(Ci.nsICryptoHash.MD5);
+    hasher.update(data, data.length);
+    let hash = hasher.finish(false);
+
+    // return the two-digit hexadecimal code for a byte
+    function toHexString(charCode) {
+      return ("0" + charCode.toString(16)).slice(-2);
+    }
+
+    // convert the binary hash data to a hex string.
+    let hex = Object.keys(hash).map(i => toHexString(hash.charCodeAt(i)));
+    return hex.join("");
+  },
+};