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March 27, 2022 14:11
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Save Krewn/4654972f4202d7a2906329957570a812 to your computer and use it in GitHub Desktop.
Uses SHA256 hash sums to determine which files change.
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package main | |
import( | |
"fmt" | |
"io/ioutil" | |
"log" | |
"strings" | |
"os" | |
) | |
func loadLog(fileName string) map[string]string { | |
hashes := make(map[string]string) | |
content, err := ioutil.ReadFile(fileName) | |
if err != nil { | |
log.Fatal(err) | |
} | |
text := string(content) | |
lines := strings.Split(text, "\n") | |
for _,line := range lines{ | |
if len(line) > 64{ | |
hash := line[:64] | |
fn := line[64:] | |
hashes[hash] = fn | |
} | |
} | |
return hashes | |
} | |
func hasKey(collection map[string]string,item string) bool{ | |
_,ok := collection[item] | |
return ok | |
} | |
func main(){ | |
log1 := loadLog(os.Args[1]) | |
log2 := loadLog(os.Args[2]) | |
fmt.Println("Changed in second log:") | |
for k := range log2{ | |
if !hasKey(log1,k){ | |
fmt.Println(k+log2[k]) | |
} | |
} | |
fmt.Println("Changed from first log:") | |
for k := range log1{ | |
if !hasKey(log2,k){ | |
fmt.Println(k+log1[k]) | |
} | |
} | |
} | |
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package main | |
import( | |
"os" | |
"fmt" | |
"io/ioutil" | |
"crypto/sha256" | |
"log" | |
"encoding/hex" | |
"path/filepath" | |
) | |
func hashFile(fileHandle string)string{ | |
hasher := sha256.New() | |
s, err := ioutil.ReadFile(fileHandle) | |
hasher.Write(s) | |
if err != nil { | |
//log.Fatal(err) | |
fmt.Println("#[ERR1HashingFile]"+fileHandle) | |
} | |
return hex.EncodeToString(hasher.Sum(nil)) | |
} | |
func hashLogger(prefix string,fileHandle os.FileInfo)string{ | |
hashes := "" | |
if fileHandle.IsDir(){ | |
hashes += fileHandle.Name()+"\n" | |
err := os.Chdir(fileHandle.Name()) | |
if err != nil { | |
fmt.Println("#[ERR2ChangingDirtectory]"+fileHandle.Name()) | |
}else{ | |
f,err := os.Open(".") | |
if err != nil { | |
fmt.Println("#[ERR3OpeningDirectroy]"+fileHandle.Name()) | |
//log.Fatal(err) | |
}else{ | |
files,_:= f.Readdir(0) | |
for _, v := range files { | |
hashes += hashLogger(filepath.Join(prefix,fileHandle.Name()),v)+"\n" | |
} | |
os.Chdir("..") | |
} | |
} | |
} else { | |
hashes+=hashFile(fileHandle.Name())+"@"+filepath.Join(prefix,fileHandle.Name()) | |
} | |
return hashes | |
} | |
func main(){ | |
fi,_ := os.Stat(os.Args[1]) | |
fmt.Println(hashLogger("",fi)) | |
} |
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