qbit/go
1
0
Fork 0
mirror of https://github.com/golang/go synced 2024-11-21 19:04:44 -07:00
Code Releases Activity

path/filepath: use windows GetShortPathName api to force GetLongPathName to do its work

Browse Source 
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5928043
This commit is contained in:
Alex Brainman 2012-03-27 15:53:08 +11:00
parent d6c9af6a4e
commit 7a39654174
5 changed files with 64 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
api/go1.txt
View File

@ -22244,6 +22244,7 @@ pkg syscall (windows-386), func GetProcessTimes(Handle, *Filetime, *Filetime, *F
pkg syscall (windows-386), func GetProtoByName(string) (*Protoent, error)
pkg syscall (windows-386), func GetQueuedCompletionStatus(Handle, *uint32, *uint32, **Overlapped, uint32) error
pkg syscall (windows-386), func GetServByName(string, string) (*Servent, error)
pkg syscall (windows-386), func GetShortPathName(*uint16, *uint16, uint32) (uint32, error)
pkg syscall (windows-386), func GetStartupInfo(*StartupInfo) error
pkg syscall (windows-386), func GetStdHandle(int) (Handle, error)
pkg syscall (windows-386), func GetSystemTimeAsFileTime(*Filetime)
@ -23161,6 +23162,7 @@ pkg syscall (windows-amd64), func GetProcessTimes(Handle, *Filetime, *Filetime,
pkg syscall (windows-amd64), func GetProtoByName(string) (*Protoent, error)
pkg syscall (windows-amd64), func GetQueuedCompletionStatus(Handle, *uint32, *uint32, **Overlapped, uint32) error
pkg syscall (windows-amd64), func GetServByName(string, string) (*Servent, error)
pkg syscall (windows-amd64), func GetShortPathName(*uint16, *uint16, uint32) (uint32, error)
pkg syscall (windows-amd64), func GetStartupInfo(*StartupInfo) error
pkg syscall (windows-amd64), func GetStdHandle(int) (Handle, error)
pkg syscall (windows-amd64), func GetSystemTimeAsFileTime(*Filetime)

38
src/pkg/path/filepath/symlink_windows.go
View File

@ -8,7 +8,24 @@ import (
"syscall"
)
func evalSymlinks(path string) (string, error) {
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)))
@ -23,13 +40,24 @@ func evalSymlinks(path string) (string, error) {
}
}
b = b[:n]
s := syscall.UTF16ToString(b)
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. This matches what os.Getwd returns.
if len(s) >= 2 && s[1] == ':' && 'a' <= s[0] && s[0] <= 'z' {
s = string(s[0]+'A'-'a') + s[1:]
if len(p) >= 2 && p[1] == ':' && 'a' <= p[0] && p[0] <= 'z' {
p = string(p[0]+'A'-'a') + p[1:]
}
return Clean(s), nil
return Clean(p), nil
}

1
src/pkg/syscall/syscall_windows.go
View File

@ -175,6 +175,7 @@ func NewCallback(fn interface{}) uintptr
//sys FlushFileBuffers(handle Handle) (err error)
//sys GetFullPathName(path *uint16, buflen uint32, buf *uint16, fname **uint16) (n uint32, err error) = kernel32.GetFullPathNameW
//sys GetLongPathName(path *uint16, buf *uint16, buflen uint32) (n uint32, err error) = kernel32.GetLongPathNameW
//sys GetShortPathName(longpath *uint16, shortpath *uint16, buflen uint32) (n uint32, err error) = kernel32.GetShortPathNameW
//sys CreateFileMapping(fhandle Handle, sa *SecurityAttributes, prot uint32, maxSizeHigh uint32, maxSizeLow uint32, name *uint16) (handle Handle, err error) = kernel32.CreateFileMappingW
//sys MapViewOfFile(handle Handle, access uint32, offsetHigh uint32, offsetLow uint32, length uintptr) (addr uintptr, err error)
//sys UnmapViewOfFile(addr uintptr) (err error)

14
src/pkg/syscall/zsyscall_windows_386.go
View File

@ -79,6 +79,7 @@ var (
procFlushFileBuffers = modkernel32.NewProc("FlushFileBuffers")
procGetFullPathNameW = modkernel32.NewProc("GetFullPathNameW")
procGetLongPathNameW = modkernel32.NewProc("GetLongPathNameW")
procGetShortPathNameW = modkernel32.NewProc("GetShortPathNameW")
procCreateFileMappingW = modkernel32.NewProc("CreateFileMappingW")
procMapViewOfFile = modkernel32.NewProc("MapViewOfFile")
procUnmapViewOfFile = modkernel32.NewProc("UnmapViewOfFile")
@ -904,6 +905,19 @@ func GetLongPathName(path *uint16, buf *uint16, buflen uint32) (n uint32, err er
return
}
func GetShortPathName(longpath *uint16, shortpath *uint16, buflen uint32) (n uint32, err error) {
r0, _, e1 := Syscall(procGetShortPathNameW.Addr(), 3, uintptr(unsafe.Pointer(longpath)), uintptr(unsafe.Pointer(shortpath)), uintptr(buflen))
n = uint32(r0)
if n == 0 {
if e1 != 0 {
err = error(e1)
} else {
err = EINVAL
}
}
return
}
func CreateFileMapping(fhandle Handle, sa *SecurityAttributes, prot uint32, maxSizeHigh uint32, maxSizeLow uint32, name *uint16) (handle Handle, err error) {
r0, _, e1 := Syscall6(procCreateFileMappingW.Addr(), 6, uintptr(fhandle), uintptr(unsafe.Pointer(sa)), uintptr(prot), uintptr(maxSizeHigh), uintptr(maxSizeLow), uintptr(unsafe.Pointer(name)))
handle = Handle(r0)

14
src/pkg/syscall/zsyscall_windows_amd64.go
View File

@ -79,6 +79,7 @@ var (
procFlushFileBuffers = modkernel32.NewProc("FlushFileBuffers")
procGetFullPathNameW = modkernel32.NewProc("GetFullPathNameW")
procGetLongPathNameW = modkernel32.NewProc("GetLongPathNameW")
procGetShortPathNameW = modkernel32.NewProc("GetShortPathNameW")
procCreateFileMappingW = modkernel32.NewProc("CreateFileMappingW")
procMapViewOfFile = modkernel32.NewProc("MapViewOfFile")
procUnmapViewOfFile = modkernel32.NewProc("UnmapViewOfFile")
@ -904,6 +905,19 @@ func GetLongPathName(path *uint16, buf *uint16, buflen uint32) (n uint32, err er
return
}
func GetShortPathName(longpath *uint16, shortpath *uint16, buflen uint32) (n uint32, err error) {
r0, _, e1 := Syscall(procGetShortPathNameW.Addr(), 3, uintptr(unsafe.Pointer(longpath)), uintptr(unsafe.Pointer(shortpath)), uintptr(buflen))
n = uint32(r0)
if n == 0 {
if e1 != 0 {
err = error(e1)
} else {
err = EINVAL
}
}
return
}
func CreateFileMapping(fhandle Handle, sa *SecurityAttributes, prot uint32, maxSizeHigh uint32, maxSizeLow uint32, name *uint16) (handle Handle, err error) {
r0, _, e1 := Syscall6(procCreateFileMappingW.Addr(), 6, uintptr(fhandle), uintptr(unsafe.Pointer(sa)), uintptr(prot), uintptr(maxSizeHigh), uintptr(maxSizeLow), uintptr(unsafe.Pointer(name)))
handle = Handle(r0)