724bd64429
Clean rewrite of the fxt CLI with unified gRPC client, JSON/human output abstraction, and stub implementations for all 15 command groups: auth, trade, train, tune, model, agent, backtest, broker, data, service, cluster, risk, config, watch (TUI), mcp. Deleted old fat-client commands, client modules, types, prelude, and tests (-12,769 net lines). Fixed pre-existing clippy issues in auth module (indexing_slicing in encryption.rs, manual_let_else in token_manager.rs, str_to_string in build.rs). 60 tests passing (53 lib + 7 binary), 0 clippy warnings. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
46 lines
1.4 KiB
Rust
46 lines
1.4 KiB
Rust
//! Output format abstraction for JSON and human-readable rendering.
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//!
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//! Every command result type implements [`HumanReadable`] so the CLI can
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//! switch between `--json` (machine-readable) and the default tabular output
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//! with a single [`render`] call.
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use serde::Serialize;
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use std::io::Write;
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/// Output format selected by the global `--json` flag.
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#[derive(Debug, Clone, Copy)]
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pub enum OutputFormat {
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/// Default: pretty-printed tables/text for humans.
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Human,
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/// Structured JSON (for CI pipelines, LLM tool-use, jq).
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Json,
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}
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/// Render any serializable result in the chosen format.
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///
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/// # Errors
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///
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/// Returns an error if JSON serialization or stdout writing fails.
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pub fn render<T: Serialize + HumanReadable>(result: &T, format: OutputFormat) -> anyhow::Result<()> {
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match format {
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OutputFormat::Json => {
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let json = serde_json::to_string_pretty(result)?;
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let mut stdout = std::io::stdout().lock();
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writeln!(stdout, "{json}")?;
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}
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OutputFormat::Human => {
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result.print_human();
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}
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}
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Ok(())
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}
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/// Trait for human-readable terminal rendering.
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///
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/// Implementors print directly to stdout using `println!`, `colored`, or
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/// `tabled` — whatever looks best for the data type.
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pub trait HumanReadable {
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/// Print a human-friendly representation to stdout.
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fn print_human(&self);
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}
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