inferno 0.11.13

Rust port of the FlameGraph performance profiling tool suite
Documentation 
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use std::io;
use std::path::PathBuf;

use clap::Parser;
use env_logger::Env;
use inferno::collapse::vsprof::Folder;
use inferno::collapse::Collapse;

#[derive(Debug, Parser)]
#[clap(
    name = "inferno-collapse-vsprof",
    about,
    after_help = "\
[1] This processes the call tree summary of the built in Visual Studio profiler"
)]
struct Opt {
    // ************* //
    // *** FLAGS *** //
    // ************* //
    /// Silence all log output
    #[clap(short = 'q', long = "quiet")]
    quiet: bool,

    /// Verbose logging mode (-v, -vv, -vvv)
    #[clap(short = 'v', long = "verbose", parse(from_occurrences))]
    verbose: usize,

    // ************ //
    // *** ARGS *** //
    // ************ //
    #[clap(value_name = "PATH")]
    /// Call tree summary file from the built in Visual Studio profiler, or STDIN if not specified
    infile: Option<PathBuf>,
}

fn main() -> io::Result<()> {
    let opt = Opt::parse();

    // Initialize logger
    if !opt.quiet {
        env_logger::Builder::from_env(Env::default().default_filter_or(match opt.verbose {
            0 => "warn",
            1 => "info",
            2 => "debug",
            _ => "trace",
        }))
        .format_timestamp(None)
        .init();
    }

    Folder::default().collapse_file_to_stdout(opt.infile)
}