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rust-cli.md

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Tasks

P0

  • Fix panic on empty input when stdin is piped
    • ID: stdin-panic
    • Details: cargo run -- parse < /dev/null panics with unwrap() on empty reader. Use BufRead::read_line with proper EOF handling instead of unwrap().
    • Files: src/input.rs
    • Acceptance: cargo test -- --ignored test_empty_stdin passes, no panic on empty input

P1

  • Add --format flag for JSON and TOML output

    • Tags: feature
    • Details: Currently only outputs plain text. Add clap argument --format <json|toml|text>. Use serde_json and toml crates for serialization. Default to text.
    • Files: src/cli.rs, src/output.rs
    • Blocked by: stdin-panic

  • Add integration tests for all subcommands

    • Tags: testing
    • Details: Use assert_cmd and predicates crates. Cover:
      • parse with valid/invalid input files
      • validate with malformed data
      • --format json output structure
      • Exit codes (0 success, 1 validation error, 2 usage error)
    • Files: tests/cli.rs
    • Acceptance: cargo test --test cli passes, all subcommands covered

P2

  • Run clippy with pedantic lints and fix all warnings
    • Details: Add #![warn(clippy::pedantic)] to src/main.rs. Fix all warnings. Add clippy to CI.
    • Acceptance: cargo clippy -- -D warnings exits 0
  • Add shell completions generation via clap_complete
    • Details: Add completions subcommand that generates shell completions for bash, zsh, fish. Document in README.
  • Publish to crates.io with proper metadata
    • Tags: release
    • Details: Fill in Cargo.toml metadata (description, license, repository, keywords, categories). Run cargo publish --dry-run first.