github.com/metux/go-metabuild@v0.0.0-20240118143255-d9ed5ab697f9/util/compress.go (about)

     1  package util
     2  
     3  import (
     4  	"compress/gzip"
     5  	"os"
     6  )
     7  
     8  func GzipCompress(infile string, outfile string, fmode os.FileMode) error {
     9  	data, err := os.ReadFile(infile)
    10  	if err != nil {
    11  		return err
    12  	}
    13  
    14  	handle, err := os.OpenFile(outfile, os.O_CREATE|os.O_RDWR, fmode)
    15  	if err != nil {
    16  		return err
    17  	}
    18  	defer handle.Close()
    19  
    20  	zipWriter, err := gzip.NewWriterLevel(handle, 9)
    21  	if err != nil {
    22  		return err
    23  	}
    24  
    25  	if _, err := zipWriter.Write(data); err != nil {
    26  		return err
    27  	}
    28  	if err = zipWriter.Close(); err != nil {
    29  		return err
    30  	}
    31  	return nil
    32  }