1 files changed, 174 insertions, 0 deletions
diff --git a/mailnews/mime/public/MimeHeaderParser.h b/mailnews/mime/public/MimeHeaderParser.h
new file mode 100644
index 000000000..429e759b1
--- /dev/null
+++ b/mailnews/mime/public/MimeHeaderParser.h
@@ -0,0 +1,174 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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/. */
+
+#ifndef MimeHeaderParser_h__
+#define MimeHeaderParser_h__
+
+#include "nsCOMArray.h"
+#include "nsStringGlue.h"
+#include "nsTArray.h"
+
+class msgIAddressObject;
+
+namespace mozilla {
+namespace mailnews {
+
+/**
+ * This is used to signal that the input header value has already been decoded
+ * according to RFC 2047 and is in UTF-16 form.
+ */
+nsCOMArray<msgIAddressObject> DecodedHeader(const nsAString &aHeader);
+
+/**
+ * This is used to signal that the input header value needs to be decoded
+ * according to RFC 2047. The charset parameter indicates the charset to assume
+ * that non-ASCII data is in; if the value is null (the default), then the
+ * charset is assumed to be UTF-8.
+ */
+nsCOMArray<msgIAddressObject> EncodedHeader(const nsACString &aHeader,
+                                            const char *aCharset = nullptr);
+
+namespace detail {
+void DoConversion(const nsTArray<nsString> &aUTF16, nsTArray<nsCString> &aUTF8);
+};
+/**
+ * This is a class designed for use as temporaries so that methods can pass
+ * an nsTArray<nsCString> into methods that expect nsTArray<nsString> for out
+ * parameters (this does not work for in-parameters).
+ *
+ * It works by internally providing an nsTArray<nsString> which it uses for its
+ * external API operations. If the user requests an array of nsCString elements
+ * instead, it converts the UTF-16 array to a UTF-8 array on destruction.
+ */
+template <uint32_t N = 5>
+class UTF16ArrayAdapter
+{
+public:
+  UTF16ArrayAdapter(nsTArray<nsCString> &aUTF8Array)
+  : mUTF8Array(aUTF8Array) {}
+  ~UTF16ArrayAdapter() { detail::DoConversion(mUTF16Array, mUTF8Array); }
+  operator nsTArray<nsString>&() { return mUTF16Array; }
+private:
+  nsTArray<nsCString> &mUTF8Array;
+  AutoTArray<nsString, N> mUTF16Array;
+};
+
+/**
+ * Given a name and an email, both encoded in UTF-8, produce a string suitable
+ * for writing in an email header by quoting where necessary.
+ *
+ * If name is not empty, the output string will be name <email>. If it is empty,
+ * the output string is just the email. Note that this DOES NOT do any RFC 2047
+ * encoding.
+ */
+void MakeMimeAddress(const nsACString &aName, const nsACString &aEmail,
+                     nsACString &full);
+
+/**
+ * Given a name and an email, produce a string suitable for writing in an email
+ * header by quoting where necessary.
+ *
+ * If name is not empty, the output string will be name <email>. If it is empty,
+ * the output string is just the email. Note that this DOES NOT do any RFC 2047
+ * encoding.
+ */
+void MakeMimeAddress(const nsAString &aName, const nsAString &aEmail,
+                     nsAString &full);
+
+/**
+ * Given a name and an email, both encoded in UTF-8, produce a string suitable
+ * for displaying in UI.
+ *
+ * If name is not empty, the output string will be name <email>. If it is empty,
+ * the output string is just the email.
+ */
+void MakeDisplayAddress(const nsAString &aName, const nsAString &aEmail,
+                        nsAString &full);
+
+/**
+ * Returns a copy of the input which may have had some addresses removed.
+ * Addresses are removed if they are already in either of the supplied
+ * address lists.
+ *
+ * Addresses are considered to be the same if they contain the same email
+ * address parts, ignoring case. Display names or comments are not compared.
+ *
+ * @param aHeader      The addresses to remove duplicates from.
+ * @param aOtherEmails Other addresses that the duplicate removal process also
+ *                     checks for duplicates against. Addresses in this list
+ *                     will not be added to the result.
+ * @return             The original header with duplicate addresses removed.
+ */
+void RemoveDuplicateAddresses(const nsACString &aHeader,
+                              const nsACString &aOtherEmails,
+                              nsACString &result);
+
+/**
+ * Given a message header, extract all names and email addresses found in that
+ * header into the two arrays.
+ */
+void ExtractAllAddresses(const nsCOMArray<msgIAddressObject> &aHeader,
+                         nsTArray<nsString> &names, nsTArray<nsString> &emails);
+
+/**
+ * Given a raw message header value, extract display names for every address
+ * found in the header.
+ */
+void ExtractDisplayAddresses(const nsCOMArray<msgIAddressObject> &aHeader,
+                             nsTArray<nsString> &addresses);
+
+/**
+ * Given a raw message header value, extract all the email addresses into an
+ * array.
+ *
+ * Duplicate email addresses are not removed from the output list.
+ */
+void ExtractEmails(const nsCOMArray<msgIAddressObject> &aHeader,
+                   nsTArray<nsString> &emails);
+
+/**
+ * Given a raw message header value, extract the first name/email address found
+ * in the header. This is essentially equivalent to grabbing the first entry of
+ * ExtractAllAddresses.
+ */
+void ExtractFirstAddress(const nsCOMArray<msgIAddressObject> &aHeader,
+                         nsACString &name, nsACString &email);
+
+/**
+ * Given an RFC 2047-decoded message header value, extract the first name/email
+ * address found in the header. This is essentially equivalent to grabbing the
+ * first entry of ExtractAllAddresses.
+ */
+void ExtractFirstAddress(const nsCOMArray<msgIAddressObject> &aHeader,
+                         nsAString &name, nsACString &email);
+
+/**
+ * Given a raw message header value, extract the first email address found in
+ * the header.
+ */
+void ExtractEmail(const nsCOMArray<msgIAddressObject> &aHeader,
+                  nsACString &email);
+
+/**
+ * Given a raw message header value, extract and clean up the first display
+ * name found in the header. If there is no display name, the email address is
+ * used instead.
+ */
+void ExtractName(const nsCOMArray<msgIAddressObject> &aHeader,
+                 nsACString &name);
+
+/**
+ * Given an RFC 2047-decoded message header value, extract the first display
+ * name found in the header. If there is no display name, the email address is
+ * returned instead.
+ */
+void ExtractName(const nsCOMArray<msgIAddressObject> &aDecodedHeader,
+                 nsAString &name);
+
+} // namespace mailnews
+} // namespace mozilla
+
+#endif