csvpp 0.8.0

Compile csv++ source code to a target spreadsheet format
Documentation 
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use std::path;

#[derive(Debug, Default, clap::Parser)]
#[command(author = "Patrick Carroll")]
#[command(version, about)]
pub struct CliArgs {
    #[arg(
        short,
        long,
        default_value_t = false,
        help = "Create a backup of the target spreadsheet before applying changes."
    )]
    pub backup: bool,

    #[arg(
        group = "output",
        short,
        long,
        help = "The id of the sheet - you can find this from the URL: https://docs.google.com/spreadsheets/d/< ... SHEET_ID ... >/edit#gid="
    )]
    pub google_sheet_id: Option<String>,

    #[arg(
        long,
        help = "The file path to the service account credentials used to access the Google Sheets"
    )]
    pub google_account_credentials: Option<String>,

    #[arg(
        short,
        long,
        num_args = 0..,
        help = "`key=value` pairs where the right side will be parsed and made available as a variable",
    )]
    pub key_values: Vec<String>,

    #[arg(
        long,
        default_value_t = false,
        help = "Do not use any cached .csvpo files when compiling."
    )]
    pub no_cache: bool,

    #[arg(
        group = "output",
        short,
        long,
        help = "The file to write to (must be .csv, .ods, .xlsx)"
    )]
    pub output_filename: Option<path::PathBuf>,

    #[arg(
        short,
        long,
        default_value_t = false,
        help = "Do not overwrite values in the spreadsheet being written to. The default is to overwrite"
    )]
    pub safe: bool,

    #[arg(
        short = 'n',
        long,
        help = "The name of the sheet (the tab) to write the compiled spreadsheet to."
    )]
    pub sheet_name: Option<String>,

    #[arg(
        action = clap::ArgAction::Count,
        short = 'v',
        long,
        help = "The verbosity of the output.  You can specify -v, -vv, -vvv and -vvvv for increasing verbosity.  By default only errors are shown.")]
    pub verbose: u8,

    #[arg(
        short,
        long,
        default_value_t = 0,
        help = "Offset the spreadsheet by this many cells"
    )]
    pub x_offset: u32,

    #[arg(
        short,
        long,
        default_value_t = 0,
        help = "Offset the spreadsheet by this many rows"
    )]
    pub y_offset: u32,

    #[arg(required = true)]
    pub input_filename: path::PathBuf,
}

#[cfg(test)]
mod tests {
    use super::*;
    use clap::Parser;

    #[test]
    fn parse_defaults() {
        let cli_args = CliArgs::parse_from(["csv++", "foo.csvpp"]);

        assert_eq!(cli_args.x_offset, 0);
        assert_eq!(cli_args.y_offset, 0);
        assert!(!cli_args.safe);
        assert!(!cli_args.backup);
    }

    #[test]
    fn parse_without_input_file() {
        let cli_args = CliArgs::try_parse_from(["csv++"]);

        assert!(cli_args.is_err());
    }
}