ferrous-forge 1.9.6

System-wide Rust development standards enforcer
Documentation 
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//! Template utility functions

use crate::{Error, Result};
use std::collections::HashMap;

/// Parse variable from key=value format
///
/// # Errors
///
/// Returns an error if the string is not in `key=value` format.
pub fn parse_var(s: &str) -> Result<(String, String)> {
    let parts: Vec<&str> = s.splitn(2, '=').collect();
    if parts.len() != 2 {
        return Err(Error::template(format!(
            "Invalid variable format: '{}'. Use key=value",
            s
        )));
    }
    Ok((parts[0].to_string(), parts[1].to_string()))
}

/// Collect template variables from command line arguments
///
/// # Errors
///
/// Returns an error if any variable string is not in `key=value` format.
pub fn collect_template_variables(variables: &[String]) -> Result<HashMap<String, String>> {
    let mut template_vars = HashMap::new();

    for var in variables {
        let (key, value) = parse_var(var)?;
        template_vars.insert(key, value);
    }

    Ok(template_vars)
}