From 3346e955b2d7998f7627b49ecbbc839eca25204b Mon Sep 17 00:00:00 2001
From: Alexandre Cesaro <alexandre.cesaro@gmail.com>
Date: Thu, 16 Jul 2015 19:33:38 +0200
Subject: [PATCH] Lowered Go version requirement from 1.5 to 1.2

---
 README.md    |  2 +-
 message.go   |  9 ++++-----
 mime.go      | 19 +++++++++++++++++++
 mime_go14.go | 16 ++++++++++++++++
 writeto.go   |  3 +--
 5 files changed, 41 insertions(+), 8 deletions(-)
 create mode 100644 mime.go
 create mode 100644 mime_go14.go

diff --git a/README.md b/README.md
index 70f7acf..8c1f3bf 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@
 
 Gomail is a very simple and powerful package to send emails.
 
-It requires Go 1.3 or newer.
+It requires Go 1.2 or newer.
 
 
 ## Features
diff --git a/message.go b/message.go
index 20c3b9b..dd50d85 100644
--- a/message.go
+++ b/message.go
@@ -6,7 +6,6 @@ package gomail
 import (
 	"bytes"
 	"io"
-	"mime"
 	"os"
 	"path/filepath"
 	"time"
@@ -20,7 +19,7 @@ type Message struct {
 	embedded    []*File
 	charset     string
 	encoding    Encoding
-	hEncoder    mime.WordEncoder
+	hEncoder    mimeEncoder
 	buf         bytes.Buffer
 }
 
@@ -43,9 +42,9 @@ func NewMessage(settings ...MessageSetting) *Message {
 	m.applySettings(settings)
 
 	if m.encoding == Base64 {
-		m.hEncoder = mime.BEncoding
+		m.hEncoder = bEncoding
 	} else {
-		m.hEncoder = mime.QEncoding
+		m.hEncoder = qEncoding
 	}
 
 	return m
@@ -150,7 +149,7 @@ func (m *Message) FormatAddress(address, name string) string {
 		}
 		m.buf.WriteByte('"')
 	} else if hasSpecials(name) {
-		m.buf.WriteString(mime.BEncoding.Encode(m.charset, name))
+		m.buf.WriteString(bEncoding.Encode(m.charset, name))
 	} else {
 		m.buf.WriteString(enc)
 	}
diff --git a/mime.go b/mime.go
new file mode 100644
index 0000000..51cba72
--- /dev/null
+++ b/mime.go
@@ -0,0 +1,19 @@
+// +build go1.5
+
+package gomail
+
+import (
+	"mime"
+	"mime/quotedprintable"
+)
+
+var newQPWriter = quotedprintable.NewWriter
+
+type mimeEncoder struct {
+	mime.WordEncoder
+}
+
+var (
+	bEncoding = mimeEncoder{mime.BEncoding}
+	qEncoding = mimeEncoder{mime.QEncoding}
+)
diff --git a/mime_go14.go b/mime_go14.go
new file mode 100644
index 0000000..246e2e5
--- /dev/null
+++ b/mime_go14.go
@@ -0,0 +1,16 @@
+// +build !go1.5
+
+package gomail
+
+import "gopkg.in/alexcesaro/quotedprintable.v3"
+
+var newQPWriter = quotedprintable.NewWriter
+
+type mimeEncoder struct {
+	quotedprintable.WordEncoder
+}
+
+var (
+	bEncoding = mimeEncoder{quotedprintable.BEncoding}
+	qEncoding = mimeEncoder{quotedprintable.QEncoding}
+)
diff --git a/writeto.go b/writeto.go
index 68213a3..efe4123 100644
--- a/writeto.go
+++ b/writeto.go
@@ -6,7 +6,6 @@ import (
 	"io"
 	"mime"
 	"mime/multipart"
-	"mime/quotedprintable"
 	"path/filepath"
 	"time"
 )
@@ -207,7 +206,7 @@ func (w *messageWriter) writeBody(f func(io.Writer) error, enc Encoding) {
 	} else if enc == Unencoded {
 		w.err = f(subWriter)
 	} else {
-		wc := quotedprintable.NewWriter(subWriter)
+		wc := newQPWriter(subWriter)
 		w.err = f(wc)
 		wc.Close()
 	}