index.nct

use ./report.{Report, analyze}

use std/io.{File, Reader, print}

use std/num.usize_to_string

use std/path.Utf8Path

use std/process.arg

use std/string.String

func main(): i32! {
    let requested: &str = arg(1)? otherwise {
        print("usage: text-report PATH NEEDLE\n")?
        return 2
    }
    let needle: &str = arg(2)? otherwise {
        print("usage: text-report PATH NEEDLE\n")?
        return 2
    }
    let path = Utf8Path.new(requested)?
    var file = File.open(&path)?
    let text = file.read_to_string()?
    let report = analyze(&text, needle)
    print_report(&report)?
    return 0
}

func print_report(report: &Report): void! {
    let lines = usize_to_string(report.lines())
    let matching = usize_to_string(report.matching())
    let output = String.concat(
        "lines: ",
        (&lines) as &str,
        "\nmatching: ",
        (&matching) as &str,
        "\n",
    )
    print((&output) as &str)?
    return
}