mirror of
https://github.com/Luzifer/ansible-role-version.git
synced 2024-12-23 11:01:20 +00:00
97 lines
1.9 KiB
Go
97 lines
1.9 KiB
Go
// Copyright 2009 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.
|
|
|
|
// Fork, exec, wait, etc.
|
|
|
|
package windows
|
|
|
|
// EscapeArg rewrites command line argument s as prescribed
|
|
// in http://msdn.microsoft.com/en-us/library/ms880421.
|
|
// This function returns "" (2 double quotes) if s is empty.
|
|
// Alternatively, these transformations are done:
|
|
// - every back slash (\) is doubled, but only if immediately
|
|
// followed by double quote (");
|
|
// - every double quote (") is escaped by back slash (\);
|
|
// - finally, s is wrapped with double quotes (arg -> "arg"),
|
|
// but only if there is space or tab inside s.
|
|
func EscapeArg(s string) string {
|
|
if len(s) == 0 {
|
|
return "\"\""
|
|
}
|
|
n := len(s)
|
|
hasSpace := false
|
|
for i := 0; i < len(s); i++ {
|
|
switch s[i] {
|
|
case '"', '\\':
|
|
n++
|
|
case ' ', '\t':
|
|
hasSpace = true
|
|
}
|
|
}
|
|
if hasSpace {
|
|
n += 2
|
|
}
|
|
if n == len(s) {
|
|
return s
|
|
}
|
|
|
|
qs := make([]byte, n)
|
|
j := 0
|
|
if hasSpace {
|
|
qs[j] = '"'
|
|
j++
|
|
}
|
|
slashes := 0
|
|
for i := 0; i < len(s); i++ {
|
|
switch s[i] {
|
|
default:
|
|
slashes = 0
|
|
qs[j] = s[i]
|
|
case '\\':
|
|
slashes++
|
|
qs[j] = s[i]
|
|
case '"':
|
|
for ; slashes > 0; slashes-- {
|
|
qs[j] = '\\'
|
|
j++
|
|
}
|
|
qs[j] = '\\'
|
|
j++
|
|
qs[j] = s[i]
|
|
}
|
|
j++
|
|
}
|
|
if hasSpace {
|
|
for ; slashes > 0; slashes-- {
|
|
qs[j] = '\\'
|
|
j++
|
|
}
|
|
qs[j] = '"'
|
|
j++
|
|
}
|
|
return string(qs[:j])
|
|
}
|
|
|
|
func CloseOnExec(fd Handle) {
|
|
SetHandleInformation(Handle(fd), HANDLE_FLAG_INHERIT, 0)
|
|
}
|
|
|
|
// FullPath retrieves the full path of the specified file.
|
|
func FullPath(name string) (path string, err error) {
|
|
p, err := UTF16PtrFromString(name)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
n := uint32(100)
|
|
for {
|
|
buf := make([]uint16, n)
|
|
n, err = GetFullPathName(p, uint32(len(buf)), &buf[0], nil)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
if n <= uint32(len(buf)) {
|
|
return UTF16ToString(buf[:n]), nil
|
|
}
|
|
}
|
|
}
|