code review 4185053: http: introduce Header type, implement with net/textproto

src/pkg/net/textproto/reader.go

 // Copyright 2010 The Go Authors.  All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 package textproto
 
 import (
         "bufio"
         "bytes"
         "container/vector"
@@ skipping 397 matching lines @@
 // For example, consider this input:
 //
 //      My-Key: Value 1
 //      Long-Key: Even
 //             Longer Value
 //      My-Key: Value 2
 //
 // Given that input, ReadMIMEHeader returns the map:
 //
 //      map[string][]string{
-//              "My-Key": []string{"Value 1", "Value 2"},
-//              "Long-Key": []string{"Even Longer Value"},
+//              "My-Key": {"Value 1", "Value 2"},
+//              "Long-Key": {"Even Longer Value"},
 //      }
 //
 func (r *Reader) ReadMIMEHeader() (MIMEHeader, os.Error) {
         m := make(MIMEHeader)
         for {
                 kv, err := r.ReadContinuedLineBytes()
                 if len(kv) == 0 {
                         return m, err
                 }
 
@@ skipping 53 matching lines @@
                 if upper && 'a' <= v && v <= 'z' {
                         a[i] = v + 'A' - 'a'
                 }
                 if !upper && 'A' <= v && v <= 'Z' {
                         a[i] = v + 'a' - 'A'
                 }
                 upper = v == '-'
         }
         return string(a)
 }