cargo-allow 0.1.3

Source-tree exception ledger and policy scanner for Rust repositories.
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use allow_core::{CargoAllowError, CargoAllowResult};
use std::fs;
use std::path::Path;

pub(crate) fn emit_text(output: Option<&Path>, contents: &str) -> CargoAllowResult<()> {
    if let Some(path) = output {
        write_file(path, contents)?;
    } else {
        println!("{contents}");
    }
    Ok(())
}

pub(crate) fn emit_stderr_text(output: Option<&Path>, contents: &str) -> CargoAllowResult<()> {
    if let Some(path) = output {
        write_file(path, contents)?;
    } else {
        eprintln!("{contents}");
    }
    Ok(())
}

pub(crate) fn write_file(path: impl AsRef<Path>, contents: &str) -> CargoAllowResult<()> {
    let path = path.as_ref();
    if let Some(parent) = path.parent() {
        fs::create_dir_all(parent).map_err(|e| {
            CargoAllowError::new(format!("failed to create {}: {e}", parent.display()))
        })?;
    }
    fs::write(path, contents)
        .map_err(|e| CargoAllowError::new(format!("failed to write {}: {e}", path.display())))
}

pub(crate) fn write_file_no_overwrite(
    path: impl AsRef<Path>,
    contents: &str,
    force: bool,
) -> CargoAllowResult<()> {
    let path = path.as_ref();
    if path.exists() && !force {
        return Err(CargoAllowError::new(format!(
            "{} already exists; use --force to overwrite",
            path.display()
        )));
    }
    write_file(path, contents)
}