36 lines
819 B
Go
36 lines
819 B
Go
// Copyright 2013, 2014 Canonical Ltd.
|
|
// Licensed under the LGPLv3, see LICENCE file for details.
|
|
|
|
package errors
|
|
|
|
import (
|
|
"runtime"
|
|
"strings"
|
|
)
|
|
|
|
// prefixSize is used internally to trim the user specific path from the
|
|
// front of the returned filenames from the runtime call stack.
|
|
var prefixSize int
|
|
|
|
// goPath is the deduced path based on the location of this file as compiled.
|
|
var goPath string
|
|
|
|
func init() {
|
|
_, file, _, ok := runtime.Caller(0)
|
|
if ok {
|
|
// We know that the end of the file should be:
|
|
// github.com/juju/errors/path.go
|
|
size := len(file)
|
|
suffix := len("github.com/juju/errors/path.go")
|
|
goPath = file[:size-suffix]
|
|
prefixSize = len(goPath)
|
|
}
|
|
}
|
|
|
|
func trimGoPath(filename string) string {
|
|
if strings.HasPrefix(filename, goPath) {
|
|
return filename[prefixSize:]
|
|
}
|
|
return filename
|
|
}
|