1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77
use std::path::Path; mod hours; mod entry; pub use hours::*; pub use entry::*; pub fn parse_file(path: impl AsRef<Path>) -> Result<Vec<Entry>, FileParseError> { let data = std::fs::read(path)?; parse_bytes(&data).map_err(|e| e.into()) } pub fn parse_bytes(data: &[u8]) -> Result<Vec<Entry>, FileEntryParseError> { let mut result = Vec::new(); for (i, line) in data.split(|c| *c == b'\n').enumerate() { let line = std::str::from_utf8(line).map_err(|_| FileEntryParseError::new(i, EntryParseError::InvalidUtf8))?; let line = line.trim(); if line.is_empty() || line.starts_with('#') { continue; } let entry = Entry::from_str(line).map_err(|e| FileEntryParseError::new(i + 1, e))?; result.push(entry); } Ok(result) } #[derive(Debug)] pub enum FileParseError { Io(std::io::Error), Entry(FileEntryParseError) } #[derive(Debug)] pub struct FileEntryParseError { pub line: usize, pub error: EntryParseError, } impl FileEntryParseError { fn new(line: usize, error: EntryParseError) -> Self { Self { line, error } } } impl std::error::Error for FileParseError {} impl std::error::Error for FileEntryParseError {} impl From<std::io::Error> for FileParseError { fn from(other: std::io::Error) -> Self { Self::Io(other) } } impl From<FileEntryParseError> for FileParseError { fn from(other: FileEntryParseError) -> Self { Self::Entry(other) } } impl std::fmt::Display for FileParseError { fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result { match self { Self::Io(e) => write!(f, "{}", e), Self::Entry(e) => write!(f, "{}", e), } } } impl std::fmt::Display for FileEntryParseError { fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result { write!(f, "on line {}: {}", self.line, self.error) } }