cargo-rail 0.31.1

Cargo-native Rust workspace engine for affected CI, Rust source-surface analysis, compiler reuse, dependency coherence, exact-SHA releases, and split/sync
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//! File I/O operations for TOML manifests

use crate::error::{RailResult, ResultExt};
use std::path::Path;
use toml_edit::DocumentMut;

/// Read and parse a TOML file into a DocumentMut
///
/// Provides consistent error handling for reading and parsing Cargo.toml files.
///
/// # Errors
///
/// Returns error if file cannot be read or TOML is invalid
pub fn read_toml_file(path: &Path) -> RailResult<DocumentMut> {
    let content = std::fs::read_to_string(path).with_context(|| format!("Failed to read {}", path.display()))?;

    content
        .parse()
        .with_context(|| format!("Failed to parse {}", path.display()))
}

/// Write a TOML document to a file
///
/// Provides consistent error handling for writing Cargo.toml files.
///
/// # Errors
///
/// Returns error if file cannot be written
pub fn write_toml_file(path: &Path, doc: &DocumentMut) -> RailResult<()> {
    crate::utils::write_file_atomic(path, doc.to_string().as_bytes())
        .with_context(|| format!("Failed to write {}", path.display()))
}