mirror of
https://github.com/prometheus-community/windows_exporter.git
synced 2026-02-08 05:56:37 +00:00
67 lines
1.5 KiB
Go
67 lines
1.5 KiB
Go
// SPDX-License-Identifier: Apache-2.0
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//
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// Copyright The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//go:build windows
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package registry
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import (
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"encoding/binary"
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"io"
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"golang.org/x/sys/windows"
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)
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// readUTF16StringAtPos Read an unterminated UTF16 string at a given position, specifying its length.
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func readUTF16StringAtPos(r io.ReadSeeker, absPos int64, length uint32) (string, error) {
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value := make([]uint16, length/2)
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_, err := r.Seek(absPos, io.SeekStart)
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if err != nil {
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return "", err
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}
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err = binary.Read(r, bo, value)
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if err != nil {
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return "", err
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}
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return windows.UTF16ToString(value), nil
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}
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// readUTF16String Reads a null-terminated UTF16 string at the current offset.
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func readUTF16String(r io.Reader) (string, error) {
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var err error
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b := make([]byte, 2)
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out := make([]uint16, 0, 100)
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for i := 0; err == nil; i += 2 {
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_, err = r.Read(b)
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if b[0] == 0 && b[1] == 0 {
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break
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}
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out = append(out, bo.Uint16(b))
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}
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if err != nil {
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return "", err
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}
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return windows.UTF16ToString(out), nil
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}
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