| 12 | type helpShownKey struct{} |
| 13 | |
| 14 | func (cmd *Command) parseArgsFromStdin() ([]string, error) { |
| 15 | type state int |
| 16 | const ( |
| 17 | stateSearchForToken state = -1 |
| 18 | stateSearchForString state = 0 |
| 19 | ) |
| 20 | |
| 21 | st := stateSearchForToken |
| 22 | linenum := 1 |
| 23 | token := "" |
| 24 | args := []string{} |
| 25 | |
| 26 | breader := bufio.NewReader(cmd.Reader) |
| 27 | |
| 28 | outer: |
| 29 | for { |
| 30 | ch, _, err := breader.ReadRune() |
| 31 | if err == io.EOF { |
| 32 | switch st { |
| 33 | case stateSearchForToken: |
| 34 | if token != "--" { |
| 35 | args = append(args, token) |
| 36 | } |
| 37 | case stateSearchForString: |
| 38 | // make sure string is not empty |
| 39 | for _, t := range token { |
| 40 | if !unicode.IsSpace(t) { |
| 41 | args = append(args, token) |
| 42 | } |
| 43 | } |
| 44 | } |
| 45 | break outer |
| 46 | } |
| 47 | if err != nil { |
| 48 | return nil, err |
| 49 | } |
| 50 | switch st { |
| 51 | case stateSearchForToken: |
| 52 | if unicode.IsSpace(ch) || ch == '"' { |
| 53 | if ch == '\n' { |
| 54 | linenum++ |
| 55 | } |
| 56 | if token != "" { |
| 57 | // end the processing here |
| 58 | if token == "--" { |
| 59 | break outer |
| 60 | } |
| 61 | args = append(args, token) |
| 62 | token = "" |
| 63 | } |
| 64 | if ch == '"' { |
| 65 | st = stateSearchForString |
| 66 | } |
| 67 | continue |
| 68 | } |
| 69 | token += string(ch) |
| 70 | case stateSearchForString: |
| 71 | if ch != '"' { |