| 47 | } |
| 48 | |
| 49 | fn parse(mut s: &str) -> Result<Version, String> { |
| 50 | if !s.starts_with("rustc ") { |
| 51 | return Err(format!("unrecognized version string: {}", s)); |
| 52 | } |
| 53 | s = &s["rustc ".len()..]; |
| 54 | |
| 55 | let parts: Vec<&str> = s.split(".").collect(); |
| 56 | if parts.len() < 3 { |
| 57 | return Err(format!("not enough version parts: {:?}", parts)); |
| 58 | } |
| 59 | |
| 60 | let mut num = String::new(); |
| 61 | for c in parts[0].chars() { |
| 62 | if !c.is_digit(10) { |
| 63 | break; |
| 64 | } |
| 65 | num.push(c); |
| 66 | } |
| 67 | let major = num.parse::<u32>().map_err(|e| e.to_string())?; |
| 68 | |
| 69 | num.clear(); |
| 70 | for c in parts[1].chars() { |
| 71 | if !c.is_digit(10) { |
| 72 | break; |
| 73 | } |
| 74 | num.push(c); |
| 75 | } |
| 76 | let minor = num.parse::<u32>().map_err(|e| e.to_string())?; |
| 77 | |
| 78 | num.clear(); |
| 79 | for c in parts[2].chars() { |
| 80 | if !c.is_digit(10) { |
| 81 | break; |
| 82 | } |
| 83 | num.push(c); |
| 84 | } |
| 85 | let patch = num.parse::<u32>().map_err(|e| e.to_string())?; |
| 86 | |
| 87 | Ok(Version { major, minor, patch }) |
| 88 | } |
| 89 | } |