44 lines
1.1 KiB
Go
44 lines
1.1 KiB
Go
package engine
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import (
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"crypto/sha256"
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"encoding/hex"
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"fmt"
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"io/ioutil"
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"time"
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"github.com/deranjer/gvc/common/database"
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)
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// UniqueFileHash uses SHA256 to create a hash of the file
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func UniqueFileHash(src string) ([]byte, error) {
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file, err := ioutil.ReadFile(src)
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if err != nil {
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return []byte{}, err
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}
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hasher := sha256.New()
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hasher.Write(file)
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hash := hasher.Sum(nil)
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return hash, nil
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}
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// CreateCommitHash creates a hash of all the files and time and commit message
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func CreateCommitHash(fileList []database.File, commitMessage string) (hash []byte, err error) {
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hasher := sha256.New()
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for _, file := range fileList {
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var err error
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err = file.CalculateHash()
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if err != nil {
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return nil, fmt.Errorf("unable to calculate hash for file: %s with error: %s", file.Path, err)
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}
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hasher.Write(file.Hash[:])
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}
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time := time.Now() // Adding the metadata to the hash
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hasher.Write([]byte(commitMessage + time.String()))
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hashBytes := hasher.Sum(nil) // Getting the hash bytes
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fullHash := hex.EncodeToString(hashBytes)
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fmt.Println("Commit hash: ", fullHash)
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return hashBytes, nil
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}
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