diff options
Diffstat (limited to 'vendor/github.com/Microsoft/go-winio/internal')
7 files changed, 13 insertions, 477 deletions
diff --git a/vendor/github.com/Microsoft/go-winio/internal/fs/doc.go b/vendor/github.com/Microsoft/go-winio/internal/fs/doc.go deleted file mode 100644 index 1f65388..0000000 --- a/vendor/github.com/Microsoft/go-winio/internal/fs/doc.go +++ /dev/null @@ -1,2 +0,0 @@ -// This package contains Win32 filesystem functionality. -package fs diff --git a/vendor/github.com/Microsoft/go-winio/internal/fs/fs.go b/vendor/github.com/Microsoft/go-winio/internal/fs/fs.go deleted file mode 100644 index 0cd9621..0000000 --- a/vendor/github.com/Microsoft/go-winio/internal/fs/fs.go +++ /dev/null @@ -1,262 +0,0 @@ -//go:build windows - -package fs - -import ( - "golang.org/x/sys/windows" - - "github.com/Microsoft/go-winio/internal/stringbuffer" -) - -//go:generate go run github.com/Microsoft/go-winio/tools/mkwinsyscall -output zsyscall_windows.go fs.go - -// https://learn.microsoft.com/en-us/windows/win32/api/fileapi/nf-fileapi-createfilew -//sys CreateFile(name string, access AccessMask, mode FileShareMode, sa *windows.SecurityAttributes, createmode FileCreationDisposition, attrs FileFlagOrAttribute, templatefile windows.Handle) (handle windows.Handle, err error) [failretval==windows.InvalidHandle] = CreateFileW - -const NullHandle windows.Handle = 0 - -// AccessMask defines standard, specific, and generic rights. -// -// Used with CreateFile and NtCreateFile (and co.). -// -// Bitmask: -// 3 3 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 -// 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 -// +---------------+---------------+-------------------------------+ -// |G|G|G|G|Resvd|A| StandardRights| SpecificRights | -// |R|W|E|A| |S| | | -// +-+-------------+---------------+-------------------------------+ -// -// GR Generic Read -// GW Generic Write -// GE Generic Exectue -// GA Generic All -// Resvd Reserved -// AS Access Security System -// -// https://learn.microsoft.com/en-us/windows/win32/secauthz/access-mask -// -// https://learn.microsoft.com/en-us/windows/win32/secauthz/generic-access-rights -// -// https://learn.microsoft.com/en-us/windows/win32/fileio/file-access-rights-constants -type AccessMask = windows.ACCESS_MASK - -//nolint:revive // SNAKE_CASE is not idiomatic in Go, but aligned with Win32 API. -const ( - // Not actually any. - // - // For CreateFile: "query certain metadata such as file, directory, or device attributes without accessing that file or device" - // https://learn.microsoft.com/en-us/windows/win32/api/fileapi/nf-fileapi-createfilew#parameters - FILE_ANY_ACCESS AccessMask = 0 - - GENERIC_READ AccessMask = 0x8000_0000 - GENERIC_WRITE AccessMask = 0x4000_0000 - GENERIC_EXECUTE AccessMask = 0x2000_0000 - GENERIC_ALL AccessMask = 0x1000_0000 - ACCESS_SYSTEM_SECURITY AccessMask = 0x0100_0000 - - // Specific Object Access - // from ntioapi.h - - FILE_READ_DATA AccessMask = (0x0001) // file & pipe - FILE_LIST_DIRECTORY AccessMask = (0x0001) // directory - - FILE_WRITE_DATA AccessMask = (0x0002) // file & pipe - FILE_ADD_FILE AccessMask = (0x0002) // directory - - FILE_APPEND_DATA AccessMask = (0x0004) // file - FILE_ADD_SUBDIRECTORY AccessMask = (0x0004) // directory - FILE_CREATE_PIPE_INSTANCE AccessMask = (0x0004) // named pipe - - FILE_READ_EA AccessMask = (0x0008) // file & directory - FILE_READ_PROPERTIES AccessMask = FILE_READ_EA - - FILE_WRITE_EA AccessMask = (0x0010) // file & directory - FILE_WRITE_PROPERTIES AccessMask = FILE_WRITE_EA - - FILE_EXECUTE AccessMask = (0x0020) // file - FILE_TRAVERSE AccessMask = (0x0020) // directory - - FILE_DELETE_CHILD AccessMask = (0x0040) // directory - - FILE_READ_ATTRIBUTES AccessMask = (0x0080) // all - - FILE_WRITE_ATTRIBUTES AccessMask = (0x0100) // all - - FILE_ALL_ACCESS AccessMask = (STANDARD_RIGHTS_REQUIRED | SYNCHRONIZE | 0x1FF) - FILE_GENERIC_READ AccessMask = (STANDARD_RIGHTS_READ | FILE_READ_DATA | FILE_READ_ATTRIBUTES | FILE_READ_EA | SYNCHRONIZE) - FILE_GENERIC_WRITE AccessMask = (STANDARD_RIGHTS_WRITE | FILE_WRITE_DATA | FILE_WRITE_ATTRIBUTES | FILE_WRITE_EA | FILE_APPEND_DATA | SYNCHRONIZE) - FILE_GENERIC_EXECUTE AccessMask = (STANDARD_RIGHTS_EXECUTE | FILE_READ_ATTRIBUTES | FILE_EXECUTE | SYNCHRONIZE) - - SPECIFIC_RIGHTS_ALL AccessMask = 0x0000FFFF - - // Standard Access - // from ntseapi.h - - DELETE AccessMask = 0x0001_0000 - READ_CONTROL AccessMask = 0x0002_0000 - WRITE_DAC AccessMask = 0x0004_0000 - WRITE_OWNER AccessMask = 0x0008_0000 - SYNCHRONIZE AccessMask = 0x0010_0000 - - STANDARD_RIGHTS_REQUIRED AccessMask = 0x000F_0000 - - STANDARD_RIGHTS_READ AccessMask = READ_CONTROL - STANDARD_RIGHTS_WRITE AccessMask = READ_CONTROL - STANDARD_RIGHTS_EXECUTE AccessMask = READ_CONTROL - - STANDARD_RIGHTS_ALL AccessMask = 0x001F_0000 -) - -type FileShareMode uint32 - -//nolint:revive // SNAKE_CASE is not idiomatic in Go, but aligned with Win32 API. -const ( - FILE_SHARE_NONE FileShareMode = 0x00 - FILE_SHARE_READ FileShareMode = 0x01 - FILE_SHARE_WRITE FileShareMode = 0x02 - FILE_SHARE_DELETE FileShareMode = 0x04 - FILE_SHARE_VALID_FLAGS FileShareMode = 0x07 -) - -type FileCreationDisposition uint32 - -//nolint:revive // SNAKE_CASE is not idiomatic in Go, but aligned with Win32 API. -const ( - // from winbase.h - - CREATE_NEW FileCreationDisposition = 0x01 - CREATE_ALWAYS FileCreationDisposition = 0x02 - OPEN_EXISTING FileCreationDisposition = 0x03 - OPEN_ALWAYS FileCreationDisposition = 0x04 - TRUNCATE_EXISTING FileCreationDisposition = 0x05 -) - -// Create disposition values for NtCreate* -type NTFileCreationDisposition uint32 - -//nolint:revive // SNAKE_CASE is not idiomatic in Go, but aligned with Win32 API. -const ( - // From ntioapi.h - - FILE_SUPERSEDE NTFileCreationDisposition = 0x00 - FILE_OPEN NTFileCreationDisposition = 0x01 - FILE_CREATE NTFileCreationDisposition = 0x02 - FILE_OPEN_IF NTFileCreationDisposition = 0x03 - FILE_OVERWRITE NTFileCreationDisposition = 0x04 - FILE_OVERWRITE_IF NTFileCreationDisposition = 0x05 - FILE_MAXIMUM_DISPOSITION NTFileCreationDisposition = 0x05 -) - -// CreateFile and co. take flags or attributes together as one parameter. -// Define alias until we can use generics to allow both -// -// https://learn.microsoft.com/en-us/windows/win32/fileio/file-attribute-constants -type FileFlagOrAttribute uint32 - -//nolint:revive // SNAKE_CASE is not idiomatic in Go, but aligned with Win32 API. -const ( - // from winnt.h - - FILE_FLAG_WRITE_THROUGH FileFlagOrAttribute = 0x8000_0000 - FILE_FLAG_OVERLAPPED FileFlagOrAttribute = 0x4000_0000 - FILE_FLAG_NO_BUFFERING FileFlagOrAttribute = 0x2000_0000 - FILE_FLAG_RANDOM_ACCESS FileFlagOrAttribute = 0x1000_0000 - FILE_FLAG_SEQUENTIAL_SCAN FileFlagOrAttribute = 0x0800_0000 - FILE_FLAG_DELETE_ON_CLOSE FileFlagOrAttribute = 0x0400_0000 - FILE_FLAG_BACKUP_SEMANTICS FileFlagOrAttribute = 0x0200_0000 - FILE_FLAG_POSIX_SEMANTICS FileFlagOrAttribute = 0x0100_0000 - FILE_FLAG_OPEN_REPARSE_POINT FileFlagOrAttribute = 0x0020_0000 - FILE_FLAG_OPEN_NO_RECALL FileFlagOrAttribute = 0x0010_0000 - FILE_FLAG_FIRST_PIPE_INSTANCE FileFlagOrAttribute = 0x0008_0000 -) - -// NtCreate* functions take a dedicated CreateOptions parameter. -// -// https://learn.microsoft.com/en-us/windows/win32/api/Winternl/nf-winternl-ntcreatefile -// -// https://learn.microsoft.com/en-us/windows/win32/devnotes/nt-create-named-pipe-file -type NTCreateOptions uint32 - -//nolint:revive // SNAKE_CASE is not idiomatic in Go, but aligned with Win32 API. -const ( - // From ntioapi.h - - FILE_DIRECTORY_FILE NTCreateOptions = 0x0000_0001 - FILE_WRITE_THROUGH NTCreateOptions = 0x0000_0002 - FILE_SEQUENTIAL_ONLY NTCreateOptions = 0x0000_0004 - FILE_NO_INTERMEDIATE_BUFFERING NTCreateOptions = 0x0000_0008 - - FILE_SYNCHRONOUS_IO_ALERT NTCreateOptions = 0x0000_0010 - FILE_SYNCHRONOUS_IO_NONALERT NTCreateOptions = 0x0000_0020 - FILE_NON_DIRECTORY_FILE NTCreateOptions = 0x0000_0040 - FILE_CREATE_TREE_CONNECTION NTCreateOptions = 0x0000_0080 - - FILE_COMPLETE_IF_OPLOCKED NTCreateOptions = 0x0000_0100 - FILE_NO_EA_KNOWLEDGE NTCreateOptions = 0x0000_0200 - FILE_DISABLE_TUNNELING NTCreateOptions = 0x0000_0400 - FILE_RANDOM_ACCESS NTCreateOptions = 0x0000_0800 - - FILE_DELETE_ON_CLOSE NTCreateOptions = 0x0000_1000 - FILE_OPEN_BY_FILE_ID NTCreateOptions = 0x0000_2000 - FILE_OPEN_FOR_BACKUP_INTENT NTCreateOptions = 0x0000_4000 - FILE_NO_COMPRESSION NTCreateOptions = 0x0000_8000 -) - -type FileSQSFlag = FileFlagOrAttribute - -//nolint:revive // SNAKE_CASE is not idiomatic in Go, but aligned with Win32 API. -const ( - // from winbase.h - - SECURITY_ANONYMOUS FileSQSFlag = FileSQSFlag(SecurityAnonymous << 16) - SECURITY_IDENTIFICATION FileSQSFlag = FileSQSFlag(SecurityIdentification << 16) - SECURITY_IMPERSONATION FileSQSFlag = FileSQSFlag(SecurityImpersonation << 16) - SECURITY_DELEGATION FileSQSFlag = FileSQSFlag(SecurityDelegation << 16) - - SECURITY_SQOS_PRESENT FileSQSFlag = 0x0010_0000 - SECURITY_VALID_SQOS_FLAGS FileSQSFlag = 0x001F_0000 -) - -// GetFinalPathNameByHandle flags -// -// https://learn.microsoft.com/en-us/windows/win32/api/fileapi/nf-fileapi-getfinalpathnamebyhandlew#parameters -type GetFinalPathFlag uint32 - -//nolint:revive // SNAKE_CASE is not idiomatic in Go, but aligned with Win32 API. -const ( - GetFinalPathDefaultFlag GetFinalPathFlag = 0x0 - - FILE_NAME_NORMALIZED GetFinalPathFlag = 0x0 - FILE_NAME_OPENED GetFinalPathFlag = 0x8 - - VOLUME_NAME_DOS GetFinalPathFlag = 0x0 - VOLUME_NAME_GUID GetFinalPathFlag = 0x1 - VOLUME_NAME_NT GetFinalPathFlag = 0x2 - VOLUME_NAME_NONE GetFinalPathFlag = 0x4 -) - -// getFinalPathNameByHandle facilitates calling the Windows API GetFinalPathNameByHandle -// with the given handle and flags. It transparently takes care of creating a buffer of the -// correct size for the call. -// -// https://learn.microsoft.com/en-us/windows/win32/api/fileapi/nf-fileapi-getfinalpathnamebyhandlew -func GetFinalPathNameByHandle(h windows.Handle, flags GetFinalPathFlag) (string, error) { - b := stringbuffer.NewWString() - //TODO: can loop infinitely if Win32 keeps returning the same (or a larger) n? - for { - n, err := windows.GetFinalPathNameByHandle(h, b.Pointer(), b.Cap(), uint32(flags)) - if err != nil { - return "", err - } - // If the buffer wasn't large enough, n will be the total size needed (including null terminator). - // Resize and try again. - if n > b.Cap() { - b.ResizeTo(n) - continue - } - // If the buffer is large enough, n will be the size not including the null terminator. - // Convert to a Go string and return. - return b.String(), nil - } -} diff --git a/vendor/github.com/Microsoft/go-winio/internal/fs/security.go b/vendor/github.com/Microsoft/go-winio/internal/fs/security.go deleted file mode 100644 index 81760ac..0000000 --- a/vendor/github.com/Microsoft/go-winio/internal/fs/security.go +++ /dev/null @@ -1,12 +0,0 @@ -package fs - -// https://learn.microsoft.com/en-us/windows/win32/api/winnt/ne-winnt-security_impersonation_level -type SecurityImpersonationLevel int32 // C default enums underlying type is `int`, which is Go `int32` - -// Impersonation levels -const ( - SecurityAnonymous SecurityImpersonationLevel = 0 - SecurityIdentification SecurityImpersonationLevel = 1 - SecurityImpersonation SecurityImpersonationLevel = 2 - SecurityDelegation SecurityImpersonationLevel = 3 -) diff --git a/vendor/github.com/Microsoft/go-winio/internal/fs/zsyscall_windows.go b/vendor/github.com/Microsoft/go-winio/internal/fs/zsyscall_windows.go deleted file mode 100644 index a94e234..0000000 --- a/vendor/github.com/Microsoft/go-winio/internal/fs/zsyscall_windows.go +++ /dev/null @@ -1,61 +0,0 @@ -//go:build windows - -// Code generated by 'go generate' using "github.com/Microsoft/go-winio/tools/mkwinsyscall"; DO NOT EDIT. - -package fs - -import ( - "syscall" - "unsafe" - - "golang.org/x/sys/windows" -) - -var _ unsafe.Pointer - -// Do the interface allocations only once for common -// Errno values. -const ( - errnoERROR_IO_PENDING = 997 -) - -var ( - errERROR_IO_PENDING error = syscall.Errno(errnoERROR_IO_PENDING) - errERROR_EINVAL error = syscall.EINVAL -) - -// errnoErr returns common boxed Errno values, to prevent -// allocations at runtime. -func errnoErr(e syscall.Errno) error { - switch e { - case 0: - return errERROR_EINVAL - case errnoERROR_IO_PENDING: - return errERROR_IO_PENDING - } - return e -} - -var ( - modkernel32 = windows.NewLazySystemDLL("kernel32.dll") - - procCreateFileW = modkernel32.NewProc("CreateFileW") -) - -func CreateFile(name string, access AccessMask, mode FileShareMode, sa *windows.SecurityAttributes, createmode FileCreationDisposition, attrs FileFlagOrAttribute, templatefile windows.Handle) (handle windows.Handle, err error) { - var _p0 *uint16 - _p0, err = syscall.UTF16PtrFromString(name) - if err != nil { - return - } - return _CreateFile(_p0, access, mode, sa, createmode, attrs, templatefile) -} - -func _CreateFile(name *uint16, access AccessMask, mode FileShareMode, sa *windows.SecurityAttributes, createmode FileCreationDisposition, attrs FileFlagOrAttribute, templatefile windows.Handle) (handle windows.Handle, err error) { - r0, _, e1 := syscall.SyscallN(procCreateFileW.Addr(), uintptr(unsafe.Pointer(name)), uintptr(access), uintptr(mode), uintptr(unsafe.Pointer(sa)), uintptr(createmode), uintptr(attrs), uintptr(templatefile)) - handle = windows.Handle(r0) - if handle == windows.InvalidHandle { - err = errnoErr(e1) - } - return -} diff --git a/vendor/github.com/Microsoft/go-winio/internal/socket/socket.go b/vendor/github.com/Microsoft/go-winio/internal/socket/socket.go index 88580d9..39e8c05 100644 --- a/vendor/github.com/Microsoft/go-winio/internal/socket/socket.go +++ b/vendor/github.com/Microsoft/go-winio/internal/socket/socket.go @@ -100,8 +100,8 @@ func (f *runtimeFunc) Load() error { (*byte)(unsafe.Pointer(&f.addr)), uint32(unsafe.Sizeof(f.addr)), &n, - nil, // overlapped - 0, // completionRoutine + nil, //overlapped + 0, //completionRoutine ) }) return f.err @@ -156,7 +156,9 @@ func connectEx( bytesSent *uint32, overlapped *windows.Overlapped, ) (err error) { - r1, _, e1 := syscall.SyscallN(connectExFunc.addr, + // todo: after upgrading to 1.18, switch from syscall.Syscall9 to syscall.SyscallN + r1, _, e1 := syscall.Syscall9(connectExFunc.addr, + 7, uintptr(s), uintptr(name), uintptr(namelen), @@ -164,8 +166,8 @@ func connectEx( uintptr(sendDataLen), uintptr(unsafe.Pointer(bytesSent)), uintptr(unsafe.Pointer(overlapped)), - ) - + 0, + 0) if r1 == 0 { if e1 != 0 { err = error(e1) diff --git a/vendor/github.com/Microsoft/go-winio/internal/socket/zsyscall_windows.go b/vendor/github.com/Microsoft/go-winio/internal/socket/zsyscall_windows.go index e150412..6d2e1a9 100644 --- a/vendor/github.com/Microsoft/go-winio/internal/socket/zsyscall_windows.go +++ b/vendor/github.com/Microsoft/go-winio/internal/socket/zsyscall_windows.go @@ -33,6 +33,9 @@ func errnoErr(e syscall.Errno) error { case errnoERROR_IO_PENDING: return errERROR_IO_PENDING } + // TODO: add more here, after collecting data on the common + // error values see on Windows. (perhaps when running + // all.bat?) return e } @@ -45,7 +48,7 @@ var ( ) func bind(s windows.Handle, name unsafe.Pointer, namelen int32) (err error) { - r1, _, e1 := syscall.SyscallN(procbind.Addr(), uintptr(s), uintptr(name), uintptr(namelen)) + r1, _, e1 := syscall.Syscall(procbind.Addr(), 3, uintptr(s), uintptr(name), uintptr(namelen)) if r1 == socketError { err = errnoErr(e1) } @@ -53,7 +56,7 @@ func bind(s windows.Handle, name unsafe.Pointer, namelen int32) (err error) { } func getpeername(s windows.Handle, name unsafe.Pointer, namelen *int32) (err error) { - r1, _, e1 := syscall.SyscallN(procgetpeername.Addr(), uintptr(s), uintptr(name), uintptr(unsafe.Pointer(namelen))) + r1, _, e1 := syscall.Syscall(procgetpeername.Addr(), 3, uintptr(s), uintptr(name), uintptr(unsafe.Pointer(namelen))) if r1 == socketError { err = errnoErr(e1) } @@ -61,7 +64,7 @@ func getpeername(s windows.Handle, name unsafe.Pointer, namelen *int32) (err err } func getsockname(s windows.Handle, name unsafe.Pointer, namelen *int32) (err error) { - r1, _, e1 := syscall.SyscallN(procgetsockname.Addr(), uintptr(s), uintptr(name), uintptr(unsafe.Pointer(namelen))) + r1, _, e1 := syscall.Syscall(procgetsockname.Addr(), 3, uintptr(s), uintptr(name), uintptr(unsafe.Pointer(namelen))) if r1 == socketError { err = errnoErr(e1) } diff --git a/vendor/github.com/Microsoft/go-winio/internal/stringbuffer/wstring.go b/vendor/github.com/Microsoft/go-winio/internal/stringbuffer/wstring.go deleted file mode 100644 index 42ebc01..0000000 --- a/vendor/github.com/Microsoft/go-winio/internal/stringbuffer/wstring.go +++ /dev/null @@ -1,132 +0,0 @@ -package stringbuffer - -import ( - "sync" - "unicode/utf16" -) - -// TODO: worth exporting and using in mkwinsyscall? - -// Uint16BufferSize is the buffer size in the pool, chosen somewhat arbitrarily to accommodate -// large path strings: -// MAX_PATH (260) + size of volume GUID prefix (49) + null terminator = 310. -const MinWStringCap = 310 - -// use *[]uint16 since []uint16 creates an extra allocation where the slice header -// is copied to heap and then referenced via pointer in the interface header that sync.Pool -// stores. -var pathPool = sync.Pool{ // if go1.18+ adds Pool[T], use that to store []uint16 directly - New: func() interface{} { - b := make([]uint16, MinWStringCap) - return &b - }, -} - -func newBuffer() []uint16 { return *(pathPool.Get().(*[]uint16)) } - -// freeBuffer copies the slice header data, and puts a pointer to that in the pool. -// This avoids taking a pointer to the slice header in WString, which can be set to nil. -func freeBuffer(b []uint16) { pathPool.Put(&b) } - -// WString is a wide string buffer ([]uint16) meant for storing UTF-16 encoded strings -// for interacting with Win32 APIs. -// Sizes are specified as uint32 and not int. -// -// It is not thread safe. -type WString struct { - // type-def allows casting to []uint16 directly, use struct to prevent that and allow adding fields in the future. - - // raw buffer - b []uint16 -} - -// NewWString returns a [WString] allocated from a shared pool with an -// initial capacity of at least [MinWStringCap]. -// Since the buffer may have been previously used, its contents are not guaranteed to be empty. -// -// The buffer should be freed via [WString.Free] -func NewWString() *WString { - return &WString{ - b: newBuffer(), - } -} - -func (b *WString) Free() { - if b.empty() { - return - } - freeBuffer(b.b) - b.b = nil -} - -// ResizeTo grows the buffer to at least c and returns the new capacity, freeing the -// previous buffer back into pool. -func (b *WString) ResizeTo(c uint32) uint32 { - // already sufficient (or n is 0) - if c <= b.Cap() { - return b.Cap() - } - - if c <= MinWStringCap { - c = MinWStringCap - } - // allocate at-least double buffer size, as is done in [bytes.Buffer] and other places - if c <= 2*b.Cap() { - c = 2 * b.Cap() - } - - b2 := make([]uint16, c) - if !b.empty() { - copy(b2, b.b) - freeBuffer(b.b) - } - b.b = b2 - return c -} - -// Buffer returns the underlying []uint16 buffer. -func (b *WString) Buffer() []uint16 { - if b.empty() { - return nil - } - return b.b -} - -// Pointer returns a pointer to the first uint16 in the buffer. -// If the [WString.Free] has already been called, the pointer will be nil. -func (b *WString) Pointer() *uint16 { - if b.empty() { - return nil - } - return &b.b[0] -} - -// String returns the returns the UTF-8 encoding of the UTF-16 string in the buffer. -// -// It assumes that the data is null-terminated. -func (b *WString) String() string { - // Using [windows.UTF16ToString] would require importing "golang.org/x/sys/windows" - // and would make this code Windows-only, which makes no sense. - // So copy UTF16ToString code into here. - // If other windows-specific code is added, switch to [windows.UTF16ToString] - - s := b.b - for i, v := range s { - if v == 0 { - s = s[:i] - break - } - } - return string(utf16.Decode(s)) -} - -// Cap returns the underlying buffer capacity. -func (b *WString) Cap() uint32 { - if b.empty() { - return 0 - } - return b.cap() -} - -func (b *WString) cap() uint32 { return uint32(cap(b.b)) } -func (b *WString) empty() bool { return b == nil || b.cap() == 0 } |