🔀 Merge pull request ruby#348 from ruby/search-refactor-normalize-args

♻️  Reduce duplication in normalizing search args

lib/net/imap.rb

@@ -1929,6 +1929,9 @@ def uid_expunge(uid_set)
       end
     end
 
+    # :call-seq:
+    #   search(criteria, charset = nil) -> result
+    #
     # Sends a {SEARCH command [IMAP4rev1 §6.4.4]}[https://www.rfc-editor.org/rfc/rfc3501#section-6.4.4]
     # to search the mailbox for messages that match the given search +criteria+,
     # and returns a SearchResult.  SearchResult inherits from Array (for
@@ -2174,10 +2177,13 @@ def uid_expunge(uid_set)
     #   result = imap.search(["SUBJECT", "hi there", "not", "new"])
     #   #=> Net::IMAP::SearchResult[1, 6, 7, 8, modseq: 5594]
     #   result.modseq # => 5594
-    def search(keys, charset = nil)
-      return search_internal("SEARCH", keys, charset)
+    def search(...)
+      search_internal("SEARCH", ...)
     end
 
+    # :call-seq:
+    #   uid_search(criteria, charset = nil) -> result
+    #
     # Sends a {UID SEARCH command [IMAP4rev1 §6.4.8]}[https://www.rfc-editor.org/rfc/rfc3501#section-6.4.8]
     # to search the mailbox for messages that match the given searching
     # criteria, and returns unique identifiers (<tt>UID</tt>s).
@@ -2187,8 +2193,8 @@ def search(keys, charset = nil)
     # capability has been enabled.
     #
     # See #search for documentation of parameters.
-    def uid_search(keys, charset = nil)
-      return search_internal("UID SEARCH", keys, charset)
+    def uid_search(...)
+      search_internal("UID SEARCH", ...)
     end
 
     # :call-seq:
@@ -3117,18 +3123,11 @@ def enforce_logindisabled?
       end
     end
 
-    def search_internal(cmd, keys, charset)
-      if keys.instance_of?(String)
-        keys = [RawData.new(keys)]
-      else
-        normalize_searching_criteria(keys)
-      end
+    def search_internal(cmd, keys, charset = nil)
+      keys = normalize_searching_criteria(keys)
+      args = charset ? ["CHARSET", charset, *keys] : keys
       synchronize do
-        if charset
-          send_command(cmd, "CHARSET", charset, *keys)
-        else
-          send_command(cmd, *keys)
-        end
+        send_command(cmd, *args)
         clear_responses("SEARCH").last || []
       end
     end
@@ -3175,31 +3174,24 @@ def copy_internal(cmd, set, mailbox)
     end
 
     def sort_internal(cmd, sort_keys, search_keys, charset)
-      if search_keys.instance_of?(String)
-        search_keys = [RawData.new(search_keys)]
-      else
-        normalize_searching_criteria(search_keys)
-      end
+      search_keys = normalize_searching_criteria(search_keys)
       synchronize do
         send_command(cmd, sort_keys, charset, *search_keys)
         clear_responses("SORT").last || []
       end
     end
 
     def thread_internal(cmd, algorithm, search_keys, charset)
-      if search_keys.instance_of?(String)
-        search_keys = [RawData.new(search_keys)]
-      else
-        normalize_searching_criteria(search_keys)
-      end
+      search_keys = normalize_searching_criteria(search_keys)
       synchronize do
         send_command(cmd, algorithm, charset, *search_keys)
         clear_responses("THREAD").last || []
       end
     end
 
-    def normalize_searching_criteria(keys)
-      keys.collect! do |i|
+    def normalize_searching_criteria(criteria)
+      return RawData.new(criteria) if criteria.is_a?(String)
+      criteria.map do |i|
         case i
         when -1, Range, Array
           SequenceSet.new(i)