Function broot::display::parse_cols

source · 
pub fn parse_cols(arr: &Vec<String>) -> Result<Cols, ConfError>
Expand description

return a Cols which tries to take the s setting into account but is guaranteed to have every Col exactly once.

Examples found in repository?
src/display/col.rs (line 151)
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    fn try_from(cc: &ColsConf) -> Result<Self, Self::Error> {
        match cc {
            ColsConf::Compact(s) => parse_cols_single_str(s),
            ColsConf::Array(arr) => parse_cols(arr),
        }
    }
}

/// return a Cols which tries to take the s setting into account
/// but is guaranteed to have every Col exactly once.
#[allow(clippy::ptr_arg)] // &[String] won't compile on all platforms
pub fn parse_cols(arr: &Vec<String>) -> Result<Cols, ConfError> {
    let mut cols = DEFAULT_COLS;
    for (idx, s) in arr.iter().enumerate() {
        if idx >= COLS_COUNT {
            return Err(ConfError::InvalidCols {
                details: format!("too long: {:?}", arr),
            });
        }
        // we swap the cols, to ensure both keeps being present
        let col = Col::from_str(s)?;
        let dest_idx = col.index_in(&cols).unwrap(); // can't be none by construct
        cols[dest_idx] = cols[idx];
        cols[idx] = col;
    }
    debug!("cols from conf = {:?}", cols);
    Ok(cols)
}

/// return a Cols which tries to take the s setting into account
/// but is guaranteed to have every Col exactly once.
pub fn parse_cols_single_str(s: &str) -> Result<Cols, ConfError> {
    parse_cols(&s.chars().map(String::from).collect())
}