contact : trim contact white space

- removes the white spaces from the begin and the end of contacts
during their add.

Change-Id: I6d01d84cdd68c6b044da8b16c6ee89fbf9e721e8
Tuleap: #979

ContactsViewModel.cpp

@@ -71,8 +71,9 @@ ContactsViewModel::findContactByName(String^ name)
 Contact^
 ContactsViewModel::addNewContact(String^ name, String^ ringId)
 {
-    if (contactsList_ && !findContactByName(name)) {
-        Contact^ contact = ref new Contact(name, name);
+    auto trimedName = Utils::Trim(name);
+    if (contactsList_ && !findContactByName(trimedName)) {
+        Contact^ contact = ref new Contact(trimedName, trimedName);
         contactsList_->Append(contact);
         saveContactsToFile();
         return contact;

Utils.h

@@ -74,5 +74,19 @@ Platform::String^ toPlatformString(const std::string& str)
     return ref new Platform::String(wsstr.c_str(), wsstr.length());
 }
 
+Platform::String^ Trim(Platform::String^ s)
+{
+    const WCHAR* first = s->Begin();
+    const WCHAR* last = s->End();
+
+    while (first != last && iswspace(*first))
+        ++first;
+
+    while (first != last && iswspace(last[-1]))
+        --last;
+
+    return ref new Platform::String(first, static_cast<unsigned int>(last - first));
+}
+
 }
 }
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