Parses a modestring like "115200,8n1,rtscts" into a struct Mode. The format is baudrate,framestring,handshake. Either the handshake part or both the framestring and handshake parts can be omitted. For the omitted parts, defaults of 8 data bits, no parity, 1 stop bit and no handshaking will be filled
(s string)
| 26 | // 19200,72 - 19200 baud, 7 data bits, no parity, 2 stop bits, no handshake |
| 27 | // 9600,2,rtscts - 9600 baud, 8 data bits, no parity, 2 stop bits, rts/cts handshake |
| 28 | func ParseModestring(s string) (Mode, error) { |
| 29 | var mode Mode |
| 30 | |
| 31 | commaparts := strings.Split(strings.ToUpper(s), ",") |
| 32 | |
| 33 | brpart := commaparts[0] |
| 34 | br64, err := strconv.ParseUint(brpart, 10, 32) |
| 35 | if err != nil { |
| 36 | return mode, fmt.Errorf("modestring %q cannot parse baudrate: %v", s, err) |
| 37 | } |
| 38 | |
| 39 | mode.Baudrate = int(br64) |
| 40 | |
| 41 | mode.DataBits = 8 |
| 42 | mode.Parity = N |
| 43 | mode.Stopbits = 1 |
| 44 | if len(commaparts) >= 2 { |
| 45 | framepart := commaparts[1] |
| 46 | idx := 0 |
| 47 | lastidx := len(framepart) - 1 |
| 48 | |
| 49 | if idx <= lastidx { |
| 50 | switch framepart[idx] { |
| 51 | case '5': |
| 52 | mode.DataBits = 5 |
| 53 | idx++ |
| 54 | case '6': |
| 55 | mode.DataBits = 6 |
| 56 | idx++ |
| 57 | case '7': |
| 58 | mode.DataBits = 7 |
| 59 | idx++ |
| 60 | case '8': |
| 61 | mode.DataBits = 8 |
| 62 | idx++ |
| 63 | } |
| 64 | } |
| 65 | |
| 66 | if idx <= lastidx { |
| 67 | switch framepart[idx] { |
| 68 | case 'N': |
| 69 | mode.Parity = N |
| 70 | idx++ |
| 71 | case 'O': |
| 72 | mode.Parity = O |
| 73 | idx++ |
| 74 | case 'E': |
| 75 | mode.Parity = E |
| 76 | idx++ |
| 77 | } |
| 78 | } |
| 79 | |
| 80 | if idx <= lastidx { |
| 81 | switch framepart[idx] { |
| 82 | case '1': |
| 83 | mode.Stopbits = 1 |
| 84 | idx++ |
| 85 | case '2': |
no outgoing calls