mirror of https://github.com/ceph/go-ceph
63 lines
1.3 KiB
Go
63 lines
1.3 KiB
Go
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package cutil
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/*
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#include <stdlib.h>
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*/
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import "C"
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import (
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"unsafe"
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)
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// CommandInput can be used to manage the input to ceph's *_command functions.
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type CommandInput struct {
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cmd []*C.char
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inbuf []byte
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}
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// NewCommandInput creates C-level pointers from go byte buffers suitable
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// for passing off to ceph's *_command functions.
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func NewCommandInput(cmd [][]byte, inputBuffer []byte) *CommandInput {
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ci := &CommandInput{
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cmd: make([]*C.char, len(cmd)),
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inbuf: inputBuffer,
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}
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for i := range cmd {
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ci.cmd[i] = C.CString(string(cmd[i]))
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}
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return ci
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}
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// Free any C memory managed by this CommandInput.
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func (ci *CommandInput) Free() {
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for i := range ci.cmd {
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C.free(unsafe.Pointer(ci.cmd[i]))
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}
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ci.cmd = nil
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}
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// Cmd returns an unsafe wrapper around an array of C-strings.
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func (ci *CommandInput) Cmd() CharPtrPtr {
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ptr := &ci.cmd[0]
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return CharPtrPtr(ptr)
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}
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// CmdLen returns the length of the array of C-strings returned by
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// Cmd.
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func (ci *CommandInput) CmdLen() SizeT {
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return SizeT(len(ci.cmd))
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}
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// InBuf returns an unsafe wrapper to a C char*.
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func (ci *CommandInput) InBuf() CharPtr {
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if len(ci.inbuf) == 0 {
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return nil
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}
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return CharPtr(&ci.inbuf[0])
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}
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// InBufLen returns the length of the buffer returned by InBuf.
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func (ci *CommandInput) InBufLen() SizeT {
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return SizeT(len(ci.inbuf))
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}
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