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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [libgo/] [go/] [old/] [template/] [format.go] - Rev 775
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// Copyright 2009 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.
// Template library: default formatters
package template
import (
"bytes"
"fmt"
"io"
)
// StringFormatter formats into the default string representation.
// It is stored under the name "str" and is the default formatter.
// You can override the default formatter by storing your default
// under the name "" in your custom formatter map.
func StringFormatter(w io.Writer, format string, value ...interface{}) {
if len(value) == 1 {
if b, ok := value[0].([]byte); ok {
w.Write(b)
return
}
}
fmt.Fprint(w, value...)
}
var (
esc_quot = []byte(""") // shorter than """
esc_apos = []byte("'") // shorter than "'"
esc_amp = []byte("&")
esc_lt = []byte("<")
esc_gt = []byte(">")
)
// HTMLEscape writes to w the properly escaped HTML equivalent
// of the plain text data s.
func HTMLEscape(w io.Writer, s []byte) {
var esc []byte
last := 0
for i, c := range s {
switch c {
case '"':
esc = esc_quot
case '\'':
esc = esc_apos
case '&':
esc = esc_amp
case '<':
esc = esc_lt
case '>':
esc = esc_gt
default:
continue
}
w.Write(s[last:i])
w.Write(esc)
last = i + 1
}
w.Write(s[last:])
}
// HTMLFormatter formats arbitrary values for HTML
func HTMLFormatter(w io.Writer, format string, value ...interface{}) {
ok := false
var b []byte
if len(value) == 1 {
b, ok = value[0].([]byte)
}
if !ok {
var buf bytes.Buffer
fmt.Fprint(&buf, value...)
b = buf.Bytes()
}
HTMLEscape(w, b)
}
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