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go-mtree/unvis.go
Stephen Chung 773763fb87 vis: refactored code to reflect using vis/unvis for file names
Added some more test cases for `vis`ing and `unvis`ing
strings, and a test case that walks/checks a directory with
filenames that require encoding. Had to change Path() to account
for possible errors Unvis() could return. Refactored Vis()/Unvis() into
go-mtree tar functionality as well.

Signed-off-by: Stephen Chung <schung@redhat.com>
2016-07-25 16:41:06 -04:00

22 lines
562 B
Go

package mtree
// #include "vis.h"
// #include <stdlib.h>
import "C"
import (
"fmt"
"unsafe"
)
// Unvis is a wrapper for the C implementation of unvis, which decodes a string
// that potentially has characters that are encoded with Vis
func Unvis(src string) (string, error) {
cDst, cSrc := C.CString(string(make([]byte, len(src)+1))), C.CString(src)
defer C.free(unsafe.Pointer(cDst))
defer C.free(unsafe.Pointer(cSrc))
ret := C.strunvis(cDst, cSrc)
if ret == -1 {
return "", fmt.Errorf("failed to decode: %q", src)
}
return C.GoString(cDst), nil
}