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author | H.J. Lu <hjl.tools@gmail.com> | 2012-04-03 11:15:51 -0700 |
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committer | H.J. Lu <hjl.tools@gmail.com> | 2012-04-03 11:15:51 -0700 |
commit | c924cab2fd8932bdfb107c4ca7d26128ba56f19e (patch) | |
tree | 0eea6430e211564fc331f66625373ec761837982 /libgo/go/path/filepath/symlink_windows.go | |
parent | 4c15f6d5728cb694d7d954b2c20409fdc0400b9e (diff) | |
parent | 3cef948a814542119083003a3c35a24e036230b6 (diff) | |
download | gcc-c924cab2fd8932bdfb107c4ca7d26128ba56f19e.tar.gz |
Merge remote-tracking branch 'origin/master' into hjl/x32/addr32hjl/x32/addr32
Diffstat (limited to 'libgo/go/path/filepath/symlink_windows.go')
-rw-r--r-- | libgo/go/path/filepath/symlink_windows.go | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/libgo/go/path/filepath/symlink_windows.go b/libgo/go/path/filepath/symlink_windows.go new file mode 100644 index 00000000000..1ee939928e9 --- /dev/null +++ b/libgo/go/path/filepath/symlink_windows.go @@ -0,0 +1,63 @@ +// Copyright 2012 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package filepath + +import ( + "syscall" +) + +func toShort(path string) (string, error) { + p := syscall.StringToUTF16(path) + b := p // GetShortPathName says we can reuse buffer + n, err := syscall.GetShortPathName(&p[0], &b[0], uint32(len(b))) + if err != nil { + return "", err + } + if n > uint32(len(b)) { + b = make([]uint16, n) + n, err = syscall.GetShortPathName(&p[0], &b[0], uint32(len(b))) + if err != nil { + return "", err + } + } + return syscall.UTF16ToString(b), nil +} + +func toLong(path string) (string, error) { + p := syscall.StringToUTF16(path) + b := p // GetLongPathName says we can reuse buffer + n, err := syscall.GetLongPathName(&p[0], &b[0], uint32(len(b))) + if err != nil { + return "", err + } + if n > uint32(len(b)) { + b = make([]uint16, n) + n, err = syscall.GetLongPathName(&p[0], &b[0], uint32(len(b))) + if err != nil { + return "", err + } + } + b = b[:n] + return syscall.UTF16ToString(b), nil +} + +func evalSymlinks(path string) (string, error) { + p, err := toShort(path) + if err != nil { + return "", err + } + p, err = toLong(p) + if err != nil { + return "", err + } + // syscall.GetLongPathName does not change the case of the drive letter, + // but the result of EvalSymlinks must be unique, so we have + // EvalSymlinks(`c:\a`) == EvalSymlinks(`C:\a`). + // Make drive letter upper case. + if len(p) >= 2 && p[1] == ':' && 'a' <= p[0] && p[0] <= 'z' { + p = string(p[0]+'A'-'a') + p[1:] + } + return Clean(p), nil +} |