[thin_check (rust)] move report creation to top level

Cargo.lock

@@ -704,6 +704,7 @@ name = "thinp"
 version = "0.1.0"
 dependencies = [
  "anyhow",
+ "atty",
  "base64",
  "byteorder",
  "clap",

Cargo.toml

@@ -6,6 +6,7 @@ edition = "2018"
 license = "GPL3"
 
 [dependencies]
+atty = "0.2"
 anyhow = "1.0"
 base64 = "0.12"
 byteorder = "1.3"

src/bin/thin_check.rs

@@ -1,13 +1,15 @@
 extern crate clap;
 extern crate thinp;
 
+use atty::Stream;
 use clap::{App, Arg};
 use std::path::Path;
 use std::process;
 use thinp::file_utils;
 use thinp::thin::check::{check, ThinCheckOptions};
-
+use std::sync::Arc;
 use std::process::exit;
+use thinp::report::*;
 
 fn main() {
     let parser = App::new("thin_check")
@@ -18,7 +20,6 @@ fn main() {
                 .help("Suppress output messages, return only exit code.")
                 .short("q")
                 .long("quiet")
-                .value_name("QUIET"),
         )
         .arg(
             Arg::with_name("SB_ONLY")
@@ -74,9 +75,20 @@ fn main() {
         exit(1);
     }
 
+    let report;
+
+    if matches.is_present("QUIET") {
+        report = std::sync::Arc::new(mk_quiet_report());
+    } else if atty::is(Stream::Stdout) {
+        report = std::sync::Arc::new(mk_progress_bar_report());
+    } else {
+       report = Arc::new(mk_simple_report());
+    }
+
     let opts = ThinCheckOptions {
         dev: &input_file,
         async_io: !matches.is_present("SYNC_IO"),
+        report
     };
 
     if let Err(reason) = check(&opts) {

src/thin/check.rs

@@ -257,9 +257,11 @@ const MAX_CONCURRENT_IO: u32 = 1024;
 pub struct ThinCheckOptions<'a> {
     pub dev: &'a Path,
     pub async_io: bool,
+    pub report: Arc<Report>,
 }
 
 pub fn check(opts: &ThinCheckOptions) -> Result<()> {
+    let report = opts.report.clone();
     let engine: Arc<dyn IoEngine + Send + Sync>;
 
     let nr_threads;
@@ -286,9 +288,7 @@ pub fn check(opts: &ThinCheckOptions) -> Result<()> {
     let devs = btree_to_map::<DeviceDetail>(engine.clone(), false, sb.details_root)?;
     let nr_devs = devs.len();
     let metadata_sm = core_sm(engine.get_nr_blocks(), nr_devs as u32);
-    let report = Arc::new(mk_progress_bar_report());
-    //let report = Arc::new(mk_simple_report());
-    //let report = Arc::new(mk_quiet_report());
+
     report.set_title("Checking thin metadata");
 
     let tid;