Source file src/pkg/net/textproto/header.go

     1	// Copyright 2010 The Go Authors.  All rights reserved.
     2	// Use of this source code is governed by a BSD-style
     3	// license that can be found in the LICENSE file.
     4	
     5	package textproto
     6	
     7	// A MIMEHeader represents a MIME-style header mapping
     8	// keys to sets of values.
     9	type MIMEHeader map[string][]string
    10	
    11	// Add adds the key, value pair to the header.
    12	// It appends to any existing values associated with key.
    13	func (h MIMEHeader) Add(key, value string) {
    14		key = CanonicalMIMEHeaderKey(key)
    15		h[key] = append(h[key], value)
    16	}
    17	
    18	// Set sets the header entries associated with key to
    19	// the single element value.  It replaces any existing
    20	// values associated with key.
    21	func (h MIMEHeader) Set(key, value string) {
    22		h[CanonicalMIMEHeaderKey(key)] = []string{value}
    23	}
    24	
    25	// Get gets the first value associated with the given key.
    26	// If there are no values associated with the key, Get returns "".
    27	// Get is a convenience method.  For more complex queries,
    28	// access the map directly.
    29	func (h MIMEHeader) Get(key string) string {
    30		if h == nil {
    31			return ""
    32		}
    33		v := h[CanonicalMIMEHeaderKey(key)]
    34		if len(v) == 0 {
    35			return ""
    36		}
    37		return v[0]
    38	}
    39	
    40	// Del deletes the values associated with key.
    41	func (h MIMEHeader) Del(key string) {
    42		delete(h, CanonicalMIMEHeaderKey(key))
    43	}