|
| 1 | +package main |
| 2 | + |
| 3 | +import ( |
| 4 | + "fmt" |
| 5 | + "io" |
| 6 | + "log" |
| 7 | + "os" |
| 8 | + |
| 9 | + tcobs "github.com/rokath/tcobs/v1" |
| 10 | + "github.com/spf13/afero" |
| 11 | +) |
| 12 | + |
| 13 | +var ( |
| 14 | + // do not initialize, goreleaser will handle that |
| 15 | + version string |
| 16 | + |
| 17 | + // do not initialize, goreleaser will handle that |
| 18 | + commit string |
| 19 | + |
| 20 | + // do not initialize, goreleaser will handle that |
| 21 | + date string |
| 22 | +) |
| 23 | + |
| 24 | +// main is the entry point. |
| 25 | +func main() { |
| 26 | + fSys := &afero.Afero{Fs: afero.NewOsFs()} // os.DirFS("") |
| 27 | + doit(os.Stdout, fSys) |
| 28 | +} |
| 29 | + |
| 30 | +func doit(w io.Writer, fSys *afero.Afero) { |
| 31 | + |
| 32 | + if len(os.Args) != 1 { |
| 33 | + fmt.Fprintln(w, version, commit, date) |
| 34 | + fmt.Fprintln(w, "Feed with a space separated byte sequence to decode a TCOBSv1 sequence.") |
| 35 | + fmt.Fprintln(w, "Example: `echo 64 1 2 18 88 25 88 161 | TCOBSv1Decode` will return `0 0 1 2 2 2 2 88 88 88 88 88 88`") |
| 36 | + return |
| 37 | + } |
| 38 | + |
| 39 | + var i []byte |
| 40 | + o := make([]byte, 16*1024) |
| 41 | + var pos int |
| 42 | + for { |
| 43 | + var n byte |
| 44 | + _, err := fmt.Scan(&n) |
| 45 | + if err == io.EOF { |
| 46 | + if len(i)+31/len(i) > len(o) { |
| 47 | + log.Fatal("len of internal buffer too small") |
| 48 | + } |
| 49 | + count := tcobs.CDecode(o, i) |
| 50 | + if count < 0 { |
| 51 | + log.Fatal("invalid input data, error code ", count) |
| 52 | + } |
| 53 | + o = o[len(o)-count:] |
| 54 | + for _, b := range o { |
| 55 | + fmt.Fprintf(w, "%d ", b) |
| 56 | + } |
| 57 | + return |
| 58 | + } |
| 59 | + if err != nil { |
| 60 | + log.Fatal(err, " at position ", pos) |
| 61 | + } |
| 62 | + i = append(i, n) |
| 63 | + pos++ |
| 64 | + } |
| 65 | +} |
0 commit comments