1
0
Fork 0
penny/util/rune.go

52 lines
1.1 KiB
Go
Executable File

//Copyright 2013 Vastech SA (PTY) LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package util
import (
"fmt"
)
func RuneToString(r rune) string {
if r >= 0x20 && r < 0x7f {
return fmt.Sprintf("'%c'", r)
}
switch r {
case 0x07:
return "'\\a'"
case 0x08:
return "'\\b'"
case 0x0C:
return "'\\f'"
case 0x0A:
return "'\\n'"
case 0x0D:
return "'\\r'"
case 0x09:
return "'\\t'"
case 0x0b:
return "'\\v'"
case 0x5c:
return "'\\\\\\'"
case 0x27:
return "'\\''"
case 0x22:
return "'\\\"'"
}
if r < 0x10000 {
return fmt.Sprintf("\\u%04x", r)
}
return fmt.Sprintf("\\U%08x", r)
}