Contains the Concourse pipeline definition for building a line-server container
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package helpers
import (
"archive/tar"
"archive/zip"
"compress/bzip2"
"compress/gzip"
"io"
"sort"
)
type ReadSeekerAt interface {
io.Reader
io.Seeker
io.ReaderAt
}
func ListArchiveFiles(mimetype string, size int64, r ReadSeekerAt) (files []string, err error) {
if mimetype == "application/x-tar" {
tReadr := tar.NewReader(r)
for {
hdr, err := tReadr.Next()
if err == io.EOF || err != nil {
break
}
if hdr.Typeflag == tar.TypeDir || hdr.Typeflag == tar.TypeReg {
files = append(files, hdr.Name)
}
}
sort.Strings(files)
} else if mimetype == "application/x-gzip" {
gzf, err := gzip.NewReader(r)
if err == nil {
tReadr := tar.NewReader(gzf)
for {
hdr, err := tReadr.Next()
if err == io.EOF || err != nil {
break
}
if hdr.Typeflag == tar.TypeDir || hdr.Typeflag == tar.TypeReg {
files = append(files, hdr.Name)
}
}
sort.Strings(files)
}
} else if mimetype == "application/x-bzip" {
bzf := bzip2.NewReader(r)
tReadr := tar.NewReader(bzf)
for {
hdr, err := tReadr.Next()
if err == io.EOF || err != nil {
break
}
if hdr.Typeflag == tar.TypeDir || hdr.Typeflag == tar.TypeReg {
files = append(files, hdr.Name)
}
}
sort.Strings(files)
} else if mimetype == "application/zip" {
zf, err := zip.NewReader(r, size)
if err == nil {
for _, f := range zf.File {
files = append(files, f.Name)
}
}
sort.Strings(files)
}
return
}