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57 lines
1.0 KiB
57 lines
1.0 KiB
package archlinux
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import (
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"bytes"
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"fmt"
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"hash"
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"sort"
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"strings"
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)
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// name is an interface for instances that have a name, such as *os.File
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type namer interface {
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// Name returns the instance name
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Name() string
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}
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type multiHasher struct {
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hash.Hash
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Expect []byte
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}
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type multiHash map[string]multiHasher
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func newMultiHash() multiHash {
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return make(multiHash)
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}
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func (mh multiHash) Add(name string, fn func() hash.Hash, expect []byte) {
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if len(expect) == 0 || bytes.Equal(expect, []byte(skip)) {
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return
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}
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mh[name] = multiHasher{fn(), expect}
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}
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func (mh multiHash) Check() error {
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var errors []string
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for name, h := range mh {
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sum := h.Sum(nil)
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if !bytes.Equal(sum, h.Expect) {
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errors = append(errors, fmt.Sprintf("%s check failed", name))
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}
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}
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if len(errors) > 0 {
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sort.Strings(errors)
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return fmt.Errorf("archlinux: %s", strings.Join(errors, ", "))
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}
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return nil
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}
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func (mh multiHash) Write(p []byte) (int, error) {
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for _, h := range mh {
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if n, err := h.Write(p); err != nil {
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return n, err
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}
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}
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return len(p), nil
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}
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