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// Copyright 2017 Baliance. All rights reserved.
//
// Use of this source code is governed by the terms of the Affero GNU General
// Public License version 3.0 as published by the Free Software Foundation and
// appearing in the file LICENSE included in the packaging of this file. A
// commercial license can be purchased by contacting sales@baliance.com.
package unioffice
import "encoding/xml"
// NeedsSpacePreserve returns true if the string has leading or trailing space.
func NeedsSpacePreserve(s string) bool {
if len(s) == 0 {
return false
}
switch s[0] {
case '\t', '\n', '\v', '\f', '\r', ' ', 0x85, 0xA0:
return true
}
switch s[len(s)-1] {
case '\t', '\n', '\v', '\f', '\r', ' ', 0x85, 0xA0:
return true
}
return false
}
// AddPreserveSpaceAttr adds an xml:space="preserve" attribute to a start
// element if it is required for the string s.
func AddPreserveSpaceAttr(se *xml.StartElement, s string) {
if NeedsSpacePreserve(s) {
se.Attr = append(se.Attr, xml.Attr{Name: xml.Name{Local: "xml:space"}, Value: "preserve"})
}
}
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