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add " and ' to list of html-escaped chars

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R=rsc
http://go/go-review/1017025
This commit is contained in:
Robert Griesemer 2009-11-03 22:52:10 -08:00
parent 796e29ebfc
commit 467c726eec
1 changed files with 24 additions and 15 deletions
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39
src/pkg/template/format.go
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@ -21,28 +21,37 @@ func StringFormatter(w io.Writer, value interface{}, format string) {
fmt.Fprint(w, value);
}
var esc_amp = strings.Bytes("&")
var esc_lt = strings.Bytes("<")
var esc_gt = strings.Bytes(">")
var (
esc_quot = strings.Bytes("""); // shorter than """
esc_apos = strings.Bytes("'"); // shorter than "'"
esc_amp = strings.Bytes("&");
esc_lt = strings.Bytes("<");
esc_gt = strings.Bytes(">");
)
// 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 {
if c == '&' || c == '<' || c == '>' {
w.Write(s[last:i]);
switch c {
case '&':
w.Write(esc_amp);
case '<':
w.Write(esc_lt);
case '>':
w.Write(esc_gt);
}
last = i+1;
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:len(s)]);
}