sview 0.1.3

Agent-friendly structure views of source and document files
Documentation 
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use anyhow::Result;
use clap::{Parser, ValueEnum};
use std::path::PathBuf;
use sview::{analyze_file, render_text, RenderOptions};

#[derive(Debug, Parser)]
#[command(version, about)]
struct Cli {
    /// Files to inspect.
    #[arg(required = true, num_args = 1..)]
    paths: Vec<PathBuf>,

    /// Emit JSON output. Equivalent to `--format json`.
    #[arg(long, conflicts_with = "format")]
    json: bool,

    /// Output format.
    #[arg(long, value_enum, default_value_t = OutputFormat::Text)]
    format: OutputFormat,

    /// Maximum node depth to render.
    #[arg(long, alias = "max-depth")]
    depth: Option<usize>,

    /// Maximum number of nodes to render.
    #[arg(long, default_value_t = 200)]
    max_nodes: usize,

    /// Maximum preview length per node.
    #[arg(long, default_value_t = 120)]
    preview_len: usize,
}

#[derive(Clone, Copy, Debug, ValueEnum)]
enum OutputFormat {
    Text,
    Json,
}

fn main() -> Result<()> {
    let cli = Cli::parse();
    let views = cli
        .paths
        .iter()
        .map(|path| analyze_file(path, cli.preview_len))
        .collect::<Result<Vec<_>>>()?;
    let options = RenderOptions {
        max_depth: cli.depth,
        max_nodes: cli.max_nodes,
    };

    if cli.json || matches!(cli.format, OutputFormat::Json) {
        if views.len() == 1 {
            println!("{}", serde_json::to_string_pretty(&views[0])?);
        } else {
            println!("{}", serde_json::to_string_pretty(&views)?);
        }
    } else {
        for (index, view) in views.iter().enumerate() {
            if index > 0 {
                println!();
            }
            print!("{}", render_text(view, &options));
        }
    }

    Ok(())
}