Increment version number

Clean up clippy warnings
Add option to ignore directories
2026-06-08 11:29:05 +03:00 · 2020-01-19 09:32:49 +00:00 · 2020-01-19 09:32:35 +00:00 · 2020-01-19 09:23:13 +00:00 · 2020-01-18 23:06:28 +00:00 · 2020-01-18 22:04:08 +00:00
16 changed files with 1153 additions and 691 deletions
@@ -6,3 +6,4 @@
 **/*.rs.bk
 *.swp
 .vscode/*
+*.idea/*
@@ -1,6 +1,12 @@
 # Based on the "trust" template v0.1.2
 # https://github.com/japaric/trust/tree/v0.1.2

+# ----------- To do a release ---------
+# tag a commit and push:
+#   git tag v0.4.0.1
+#   git push origin v0.4.0.1
+# Remember to do a cargo publish to put it in crates.io
+
 dist: trusty
 language: rust
 services: docker
@@ -46,8 +52,9 @@ deploy:
  # - Create a `public_repo` GitHub token. Go to: https://github.com/settings/tokens/new
  # - Encrypt it: `travis encrypt 0123456789012345678901234567890123456789
  # - Paste the output down here
-  api_key:
-    secure: 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
+#  api_key:
+#    secure: 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
+  api_key: $API_KEY
  file_glob: true
  file: $CRATE_NAME-$TRAVIS_TAG-$TARGET.*
  on:
@@ -1,280 +1,406 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
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@@ -1,8 +1,9 @@
 [package]
 name = "du-dust"
 description = "A more intuitive version of du"
-version = "0.2.4"
+version = "0.4.4"
 authors = ["bootandy <bootandy@gmail.com>", "nebkor <code@ardent.nebcorp.com>"]
+edition = "2018"

 documentation = "https://github.com/bootandy/dust"
 homepage = "https://github.com/bootandy/dust"
@@ -20,9 +21,11 @@ name = "dust"
 path = "src/main.rs"

 [dependencies]
-ansi_term = "0.11"
-clap = "2.31"
-assert_cli = "0.5"
-tempfile = "3"
-walkdir = "2"
+ansi_term = "=0.12"
+clap = "=2.33"
+jwalk = "0.4.0"
+num_cpus = "1.12"

+[dev-dependencies]
+assert_cli = "=0.6"
+tempfile = "=3"
@@ -7,11 +7,11 @@ du + rust = dust. Like du but more intuitive

 ## Install

-### Cargo
+#### Cargo Install

 * cargo install du-dust

-### Download
+#### Download Install

 * Download linux / mac binary from [Releases](https://github.com/bootandy/dust/releases)
 * unzip file: tar -xvf _downloaded_file.tar.gz_
@@ -38,6 +38,7 @@ Usage: dust -p <dir>  (full-path - does not shorten the path of the subdirectori
 Usage: dust -s <dir>  (apparent-size - shows the length of the file as opposed to the amount of disk space it uses)
 Usage: dust -n 30  <dir>  (Shows 30 directories not 20)
 Usage: dust -d 3  <dir>  (Shows 3 levels of subdirectories)
+Usage: dust -r  <dir>  (Reverse order of output, with root at the lowest)
 ```

 ```
@@ -62,7 +63,7 @@ djin:git/dust> dust

 ## Performance

-Dust is currently about 4 times slower than du.
+Dust uses a parallel fetching implementation that greatly improves performance for directory trees with reasonable amount of files (read more than 20) compared to du. This can be as much as 7x faster than du on a clean cache.

 ## Alternatives

@@ -1,3 +1,4 @@
+#!/usr/bin/env bash
 # This script takes care of building your crate and packaging it for release

 set -ex
@@ -1,3 +1,4 @@
+#!/usr/bin/env bash
 set -ex

 main() {
@@ -1,3 +1,4 @@
+#!/usr/bin/env bash
 # This script takes care of testing your crate

 set -ex
@@ -1,158 +1,175 @@
 extern crate ansi_term;

 use self::ansi_term::Colour::Fixed;
+use self::ansi_term::Style;
+use crate::utils::Node;

 static UNITS: [char; 4] = ['T', 'G', 'M', 'K'];

-pub fn draw_it(
-    permissions: bool,
-    short_paths: bool,
-    depth: Option<u64>,
-    base_dirs: Vec<String>,
-    to_display: Vec<(String, u64)>,
-) -> () {
-    if !permissions {
-        eprintln!("Did not have permissions for all directories");
-    }
-
-    for f in base_dirs {
-        display_node(f, &to_display, true, short_paths, depth, "")
-    }
+pub struct DisplayData {
+    pub short_paths: bool,
+    pub is_reversed: bool,
+    pub colors_on: bool,
 }

-fn get_size(nodes: &Vec<(String, u64)>, node_to_print: &String) -> Option<u64> {
-    for &(ref k, ref v) in nodes.iter() {
-        if *k == *node_to_print {
-            return Some(*v);
+impl DisplayData {
+    fn get_first_chars(&self) -> &str {
+        if self.is_reversed {
+            "─┴"
+        } else {
+            "─┬"
        }
    }
-    None
-}

-fn display_node<S: Into<String>>(
-    node_to_print: String,
-    to_display: &Vec<(String, u64)>,
-    is_biggest: bool,
-    short_paths: bool,
-    depth: Option<u64>,
-    indentation_str: S,
-) {
-    let new_depth = match depth {
-        None => None,
-        Some(0) => return,
-        Some(d) => Some(d - 1),
-    };
-    match get_size(to_display, &node_to_print) {
-        None => println!("Can not find path: {}", node_to_print),
-        Some(size) => {
-            let mut is = indentation_str.into();
-            let ntp: &str = node_to_print.as_ref();
-
-            print_this_node(ntp, size, is_biggest, short_paths, is.as_ref());
-
-            is = is.replace("└─┬", "  ");
-            is = is.replace("└──", "  ");
-            is = is.replace("├──", "│ ");
-            is = is.replace("├─┬", "│ ");
-
-            let printable_node_slashes = node_to_print.matches('/').count();
-
-            let mut num_siblings = to_display.iter().fold(0, |a, b| {
-                if b.0.starts_with(ntp) && b.0.matches('/').count() == printable_node_slashes + 1 {
-                    a + 1
+    #[allow(clippy::collapsible_if)]
+    fn get_tree_chars(
+        &self,
+        num_siblings: u64,
+        max_siblings: u64,
+        has_children: bool,
+    ) -> &'static str {
+        if self.is_reversed {
+            if num_siblings == max_siblings - 1 {
+                if has_children {
+                    "┌─┴"
                } else {
-                    a
+                    "┌──"
                }
-            });
-
-            let mut is_biggest = true;
-            for &(ref k, _) in to_display.iter() {
-                if k.starts_with(ntp) && k.matches('/').count() == printable_node_slashes + 1 {
-                    num_siblings -= 1;
-
-                    let mut has_children = false;
-                    if new_depth.is_none() || new_depth.unwrap() != 1 {
-                        for &(ref k2, _) in to_display.iter() {
-                            let kk: &str = k.as_ref();
-                            if k2.starts_with(kk)
-                                && k2.matches('/').count() == printable_node_slashes + 2
-                            {
-                                has_children = true;
-                            }
-                        }
-                    }
-
-                    display_node(
-                        k.to_string(),
-                        to_display,
-                        is_biggest,
-                        short_paths,
-                        new_depth,
-                        is.to_string() + get_tree_chars(num_siblings, has_children),
-                    );
-                    is_biggest = false;
+            } else if has_children {
+                "├─┴"
+            } else {
+                "├──"
+            }
+        } else {
+            if num_siblings == 0 {
+                if has_children {
+                    "└─┬"
+                } else {
+                    "└──"
                }
+            } else if has_children {
+                "├─┬"
+            } else {
+                "├──"
            }
        }
    }
-}

-fn get_tree_chars(num_siblings: u64, has_children: bool) -> &'static str {
-    if num_siblings == 0 {
-        if has_children {
-            "└─┬"
+    fn is_biggest(&self, num_siblings: u64, max_siblings: u64) -> bool {
+        if self.is_reversed {
+            num_siblings == 0
        } else {
-            "└──"
+            num_siblings == max_siblings - 1
        }
-    } else {
-        if has_children {
-            "├─┬"
+    }
+
+    fn get_children_from_node(&self, node: Node) -> impl Iterator<Item = Node> {
+        if self.is_reversed {
+            let n: Vec<Node> = node.children.into_iter().rev().map(|a| a).collect();
+            n.into_iter()
        } else {
-            "├──"
+            node.children.into_iter()
        }
    }
 }

+pub fn draw_it(
+    permissions: bool,
+    use_full_path: bool,
+    is_reversed: bool,
+    no_colors: bool,
+    root_node: Node,
+) {
+    if !permissions {
+        eprintln!("Did not have permissions for all directories");
+    }
+    let display_data = DisplayData {
+        short_paths: !use_full_path,
+        is_reversed,
+        colors_on: !no_colors,
+    };
+
+    for c in display_data.get_children_from_node(root_node) {
+        let first_tree_chars = display_data.get_first_chars();
+        display_node(c, true, first_tree_chars, &display_data)
+    }
+}
+
+fn display_node(node: Node, is_biggest: bool, indent: &str, display_data: &DisplayData) {
+    let mut num_siblings = node.children.len() as u64;
+    let max_sibling = num_siblings;
+    let new_indent = clean_indentation_string(indent);
+    let name = node.name.clone();
+    let size = node.size;
+
+    if !display_data.is_reversed {
+        print_this_node(&*name, size, is_biggest, display_data, indent);
+    }
+
+    for c in display_data.get_children_from_node(node) {
+        num_siblings -= 1;
+        let chars = display_data.get_tree_chars(num_siblings, max_sibling, !c.children.is_empty());
+        let is_biggest = display_data.is_biggest(num_siblings, max_sibling);
+        let full_indent = new_indent.clone() + chars;
+        display_node(c, is_biggest, &*full_indent, display_data)
+    }
+
+    if display_data.is_reversed {
+        print_this_node(&*name, size, is_biggest, display_data, indent);
+    }
+}
+
+fn clean_indentation_string(s: &str) -> String {
+    let mut is: String = s.into();
+    // For reversed:
+    is = is.replace("┌─┴", "  ");
+    is = is.replace("┌──", "  ");
+    is = is.replace("├─┴", "│ ");
+    is = is.replace("─┴", " ");
+    // For normal
+    is = is.replace("└─┬", "  ");
+    is = is.replace("└──", "  ");
+    is = is.replace("├─┬", "│ ");
+    is = is.replace("─┬", " ");
+    // For both
+    is = is.replace("├──", "│ ");
+    is
+}
+
 fn print_this_node(
-    node_name: &str,
+    name: &str,
    size: u64,
    is_biggest: bool,
-    short_paths: bool,
+    display_data: &DisplayData,
    indentation: &str,
 ) {
    let pretty_size = format!("{:>5}", human_readable_number(size),);
    println!(
        "{}",
-        format_string(
-            node_name,
-            is_biggest,
-            short_paths,
-            pretty_size.as_ref(),
-            indentation
-        )
+        format_string(name, is_biggest, display_data, &*pretty_size, indentation)
    )
 }

 pub fn format_string(
    dir_name: &str,
    is_biggest: bool,
-    short_paths: bool,
+    display_data: &DisplayData,
    size: &str,
    indentation: &str,
 ) -> String {
    let printable_name = {
-        if short_paths && dir_name.contains('/') {
-            dir_name.split('/').last().unwrap()
+        if display_data.short_paths {
+            dir_name.split('/').last().unwrap_or(dir_name)
        } else {
            dir_name
        }
    };
    format!(
        "{} {} {}",
-        if is_biggest {
+        if is_biggest && display_data.colors_on {
            Fixed(196).paint(size)
        } else {
-            Fixed(7).paint(size)
+            Style::new().paint(size)
        },
        indentation,
        printable_name,
@@ -1,20 +1,30 @@
 #[macro_use]
 extern crate clap;
-extern crate assert_cli;
-extern crate walkdir;

 use self::display::draw_it;
+use crate::utils::is_a_parent_of;
 use clap::{App, AppSettings, Arg};
-use std::io::{self, Write};
-use utils::{find_big_ones, get_dir_tree, sort};
+use utils::{find_big_ones, get_dir_tree, simplify_dir_names, sort, trim_deep_ones, Node};

 mod display;
 mod utils;

-static DEFAULT_NUMBER_OF_LINES: &'static str = "20";
+static DEFAULT_NUMBER_OF_LINES: usize = 20;
+
+#[cfg(windows)]
+fn init_color() {
+    ansi_term::enable_ansi_support().expect("Couldn't enable color support");
+}
+
+#[cfg(not(windows))]
+fn init_color() {}

 fn main() {
+    init_color();
+    let def_num_str = DEFAULT_NUMBER_OF_LINES.to_string();
    let options = App::new("Dust")
+        .about("Like du but more intuitive")
+        .version(crate_version!())
        .setting(AppSettings::TrailingVarArg)
        .arg(
            Arg::with_name("depth")
@@ -23,13 +33,20 @@ fn main() {
                .help("Depth to show")
                .takes_value(true),
        )
+        .arg(
+            Arg::with_name("threads")
+                .short("t")
+                .long("threads")
+                .help("Number of threads to spawn simultaneously")
+                .takes_value(true),
+        )
        .arg(
            Arg::with_name("number_of_lines")
                .short("n")
                .long("number-of-lines")
                .help("Number of lines of output to show")
                .takes_value(true)
-                .default_value(DEFAULT_NUMBER_OF_LINES),
+                .default_value(def_num_str.as_ref()),
        )
        .arg(
            Arg::with_name("display_full_paths")
@@ -37,62 +54,146 @@ fn main() {
                .long("full-paths")
                .help("If set sub directories will not have their path shortened"),
        )
+        .arg(
+            Arg::with_name("ignore_directory")
+                .short("X")
+                .long("ignore-directory")
+                .takes_value(true)
+                .help("Exclude any file or directory with contains this substring."),
+        )
+        .arg(
+            Arg::with_name("limit_filesystem")
+                .short("x")
+                .long("limit-filesystem")
+                .help("Only count the files and directories in the same filesystem as the supplied directory"),
+        )
        .arg(
            Arg::with_name("display_apparent_size")
                .short("s")
                .long("apparent-size")
                .help("If set will use file length. Otherwise we use blocks"),
        )
+        .arg(
+            Arg::with_name("reverse")
+                .short("r")
+                .long("reverse")
+                .help("If applied tree will be printed upside down (biggest lowest)"),
+        )
+        .arg(
+            Arg::with_name("no_colors")
+                .short("c")
+                .long("no_colors")
+                .help("If applied no colors will be printed (normally largest directories are marked in red"),
+        )
        .arg(Arg::with_name("inputs").multiple(true))
        .get_matches();

-    let filenames = {
+    let target_dirs = {
        match options.values_of("inputs") {
            None => vec!["."],
            Some(r) => r.collect(),
        }
    };

-    let number_of_lines = value_t!(options.value_of("number_of_lines"), usize).unwrap();
-    let depth = {
-        if options.is_present("depth") {
-            match value_t!(options.value_of("depth"), u64) {
-                Ok(v) => Some(v + 1),
-                Err(_) => None,
-            }
-        } else {
-            None
+    let number_of_lines = match value_t!(options.value_of("number_of_lines"), usize) {
+        Ok(v) => v,
+        Err(_) => {
+            eprintln!("Ignoring bad value for number_of_lines");
+            DEFAULT_NUMBER_OF_LINES
        }
    };
-    if options.is_present("depth")
-        && options.value_of("number_of_lines").unwrap() != DEFAULT_NUMBER_OF_LINES
-    {
-        io::stderr()
-            .write(b"Use either -n for number of directories to show. Or -d for depth. Not both")
-            .expect("Error writing to stderr. Oh the irony!");
+
+    let temp_threads = options.value_of("threads").and_then(|threads| {
+        threads
+            .parse::<usize>()
+            .map_err(|_| eprintln!("Ignoring bad value for threads: {:?}", threads))
+            .ok()
+    });
+    // Bug in JWalk
+    // https://github.com/jessegrosjean/jwalk/issues/15
+    // We force it to use 2 threads if there is only 1 cpu
+    // as JWalk breaks if it tries to run on a single cpu
+    let threads = {
+        if temp_threads.is_none() && num_cpus::get() == 1 {
+            Some(2)
+        } else {
+            temp_threads
+        }
+    };
+
+    let depth = options.value_of("depth").and_then(|depth| {
+        depth
+            .parse::<u64>()
+            .map(|v| v + 1)
+            .map_err(|_| eprintln!("Ignoring bad value for depth"))
+            .ok()
+    });
+    if options.is_present("depth") && number_of_lines != DEFAULT_NUMBER_OF_LINES {
+        eprintln!("Use either -n or -d. Not both");
        return;
    }

    let use_apparent_size = options.is_present("display_apparent_size");
-    let use_full_path = options.is_present("display_full_paths");
+    let limit_filesystem = options.is_present("limit_filesystem");
+    let ignore_directory = options.value_of("ignore_directory");

-    let (permissions, nodes, top_level_names) = get_dir_tree(&filenames, use_apparent_size);
+    let simplified_dirs = simplify_dir_names(target_dirs);
+    let (permissions, nodes) = get_dir_tree(
+        &simplified_dirs,
+        ignore_directory,
+        use_apparent_size,
+        limit_filesystem,
+        threads,
+    );
    let sorted_data = sort(nodes);
    let biggest_ones = {
-        if depth.is_none() {
-            find_big_ones(sorted_data, number_of_lines)
-        } else {
-            sorted_data
+        match depth {
+            None => find_big_ones(sorted_data, number_of_lines + simplified_dirs.len()),
+            Some(d) => trim_deep_ones(sorted_data, d, &simplified_dirs),
        }
    };
+    let tree = build_tree(biggest_ones, depth);
+
    draw_it(
        permissions,
-        !use_full_path,
-        depth,
-        top_level_names,
-        biggest_ones,
+        options.is_present("display_full_paths"),
+        options.is_present("reverse"),
+        options.is_present("no_colors"),
+        tree,
    );
 }

+fn build_tree(biggest_ones: Vec<(String, u64)>, depth: Option<u64>) -> Node {
+    let mut top_parent = Node::default();
+
+    // assume sorted order
+    for b in biggest_ones {
+        let n = Node {
+            name: b.0,
+            size: b.1,
+            children: Vec::default(),
+        };
+        recursively_build_tree(&mut top_parent, n, depth);
+    }
+    top_parent
+}
+
+fn recursively_build_tree(parent_node: &mut Node, new_node: Node, depth: Option<u64>) {
+    let new_depth = match depth {
+        None => None,
+        Some(0) => return,
+        Some(d) => Some(d - 1),
+    };
+    if let Some(c) = parent_node
+        .children
+        .iter_mut()
+        .find(|c| is_a_parent_of(&c.name, &new_node.name))
+    {
+        recursively_build_tree(c, new_node, new_depth);
+    } else {
+        parent_node.children.push(new_node);
+    }
+}
+
 #[cfg(test)]
 mod tests;
@@ -0,0 +1 @@
+hello
@@ -0,0 +1 @@
+hello
@@ -0,0 +1 @@
+hello
@@ -1,21 +1,21 @@
-extern crate ansi_term;
-extern crate tempfile;
-use self::tempfile::Builder;
-use self::tempfile::TempDir;
 use super::*;
+
+use crate::display::DisplayData;
 use display::format_string;
 use std::fs::File;
 use std::io::Write;
 use std::panic;
 use std::path::PathBuf;
 use std::process::Command;
+use tempfile::Builder;
+use tempfile::TempDir;

 #[test]
 pub fn test_main() {
    assert_cli::Assert::main_binary()
        .with_args(&["src/test_dir"])
        .stdout()
-        .is(main_output(true))
+        .is(main_output(true).as_str())
        .unwrap();
 }

@@ -24,83 +24,139 @@ pub fn test_main_long_paths() {
    assert_cli::Assert::main_binary()
        .with_args(&["-p", "src/test_dir"])
        .stdout()
-        .is(main_output(false))
+        .is(main_output(false).as_str())
+        .unwrap();
+}
+
+#[test]
+pub fn test_main_multi_arg() {
+    assert_cli::Assert::main_binary()
+        .with_args(&["src/test_dir/many/", "src/test_dir/", "src/test_dir"])
+        .stdout()
+        .is(main_output(true).as_str())
        .unwrap();
 }

 #[cfg(target_os = "macos")]
 fn main_output(short_paths: bool) -> String {
+    let d = DisplayData {
+        short_paths,
+        is_reversed: false,
+        colors_on: true,
+    };
    format!(
        "{}
 {}
 {}
 {}",
-        format_string("src/test_dir", true, short_paths, " 4.0K", ""),
-        format_string("src/test_dir/many", true, short_paths, " 4.0K", "└─┬",),
-        format_string(
-            "src/test_dir/many/hello_file",
-            true,
-            short_paths,
-            " 4.0K",
-            "  ├──",
-        ),
-        format_string(
-            "src/test_dir/many/a_file",
-            false,
-            short_paths,
-            "   0B",
-            "  └──",
-        ),
+        format_string("src/test_dir", true, &d, " 4.0K", "─┬"),
+        format_string("src/test_dir/many", true, &d, " 4.0K", " └─┬",),
+        format_string("src/test_dir/many/hello_file", true, &d, " 4.0K", "   ├──",),
+        format_string("src/test_dir/many/a_file", false, &d, "   0B", "   └──",),
    )
 }

 #[cfg(target_os = "linux")]
 fn main_output(short_paths: bool) -> String {
+    let d = DisplayData {
+        short_paths,
+        is_reversed: false,
+        colors_on: true,
+    };
    format!(
        "{}
 {}
 {}
 {}",
-        format_string("src/test_dir", true, short_paths, "  12K", ""),
-        format_string("src/test_dir/many", true, short_paths, " 8.0K", "└─┬",),
-        format_string(
-            "src/test_dir/many/hello_file",
-            true,
-            short_paths,
-            " 4.0K",
-            "  ├──",
-        ),
-        format_string(
-            "src/test_dir/many/a_file",
-            false,
-            short_paths,
-            "   0B",
-            "  └──",
-        ),
+        format_string("src/test_dir", true, &d, "  12K", "─┬"),
+        format_string("src/test_dir/many", true, &d, " 8.0K", " └─┬",),
+        format_string("src/test_dir/many/hello_file", true, &d, " 4.0K", "   ├──",),
+        format_string("src/test_dir/many/a_file", false, &d, "   0B", "   └──",),
    )
 }

+#[test]
+pub fn test_no_color_flag() {
+    assert_cli::Assert::main_binary()
+        .with_args(&["-c", "src/test_dir/"])
+        .stdout()
+        .is(no_color_flag_output().as_str())
+        .unwrap();
+}
+
+#[cfg(target_os = "macos")]
+fn no_color_flag_output() -> String {
+    "
+ 4.0K ─┬ test_dir
+ 4.0K  └─┬ many
+ 4.0K    ├── hello_file
+   0B    └── a_file
+    "
+    .to_string()
+}
+
+#[cfg(target_os = "linux")]
+fn no_color_flag_output() -> String {
+    "
+  12K ─┬ test_dir
+ 8.0K  └─┬ many
+ 4.0K    ├── hello_file
+   0B    └── a_file
+    "
+    .to_string()
+}
+
 #[test]
 pub fn test_apparent_size() {
+    let d = DisplayData {
+        short_paths: true,
+        is_reversed: false,
+        colors_on: true,
+    };
    let r = format!(
        "{}",
-        format_string(
-            "src/test_dir/many/hello_file",
-            true,
-            true,
-            "   6B",
-            "  ├──",
-        ),
+        format_string("src/test_dir/many/hello_file", true, &d, "   6B", "   ├──",),
    );

    assert_cli::Assert::main_binary()
        .with_args(&["-s", "src/test_dir"])
        .stdout()
-        .contains(r)
+        .contains(r.as_str())
        .unwrap();
 }

-fn build_temp_file(dir: &TempDir) -> (PathBuf) {
+#[test]
+pub fn test_reverse_flag() {
+    // variable names the same length make the output easier to read
+    let a = "    ┌── a_file";
+    let b = "    ├── hello_file";
+    let c = "  ┌─┴ many";
+    let d = " ─┴ test_dir";
+
+    assert_cli::Assert::main_binary()
+        .with_args(&["-r", "src/test_dir"])
+        .stdout()
+        .contains(a)
+        .stdout()
+        .contains(b)
+        .stdout()
+        .contains(c)
+        .stdout()
+        .contains(d)
+        .unwrap();
+}
+
+#[test]
+pub fn test_d_flag_works() {
+    // We should see the top level directory but not the sub dirs / files:
+    assert_cli::Assert::main_binary()
+        .with_args(&["-d", "1", "-s", "src/test_dir"])
+        .stdout()
+        .doesnt_contain("hello_file")
+        .unwrap();
+}
+
+fn build_temp_file(dir: &TempDir) -> PathBuf {
    let file_path = dir.path().join("notes.txt");
    let mut file = File::create(&file_path).unwrap();
    writeln!(file, "I am a temp file").unwrap();
@@ -123,41 +179,21 @@ pub fn test_soft_sym_link() {
        .output();
    assert!(c.is_ok());

-    let r = soft_sym_link_output(dir_s, file_path_s, link_name_s);
+    let a = format!(" ─┬ {}", dir_s);
+    let b = format!("  ├── {}", file_path_s);
+    let c = format!("  └── {}", link_name_s);

-    // We cannot guarantee which version will appear first.
-    // TODO: Consider adding predictable itteration order (sort file entries by name?)
    assert_cli::Assert::main_binary()
-        .with_args(&[dir_s])
+        .with_args(&["-p", &dir_s])
        .stdout()
-        .contains(r)
+        .contains(a.as_str())
+        .stdout()
+        .contains(b.as_str())
+        .stdout()
+        .contains(c.as_str())
        .unwrap();
 }

-#[cfg(target_os = "macos")]
-fn soft_sym_link_output(dir: &str, file_path: &str, link_name: &str) -> String {
-    format!(
-        "{}
-{}
-{}",
-        format_string(dir, true, true, " 8.0K", ""),
-        format_string(file_path, true, true, " 4.0K", "├──",),
-        format_string(link_name, false, true, " 4.0K", "└──",),
-    )
-}
-
-#[cfg(target_os = "linux")]
-fn soft_sym_link_output(dir: &str, file_path: &str, link_name: &str) -> String {
-    format!(
-        "{}
-{}
-{}",
-        format_string(dir, true, true, " 8.0K", ""),
-        format_string(file_path, true, true, " 4.0K", "├──",),
-        format_string(link_name, false, true, "   0B", "└──",),
-    )
-}
-
 // Hard links are ignored as the inode is the same as the file
 #[test]
 pub fn test_hard_sym_link() {
@@ -174,62 +210,33 @@ pub fn test_hard_sym_link() {
        .output();
    assert!(c.is_ok());

-    let (r, r2) = hard_link_output(dir_s, file_path_s, link_name_s);
+    let a = format!(" ─┬ {}", dir_s);
+    let b = format!("  └── {}", link_name_s);
+    let b2 = format!("  └── {}", file_path_s);

-    // Because this is a hard link the file and hard link look identicle. Therefore
+    // Because this is a hard link the file and hard link look identical. Therefore
    // we cannot guarantee which version will appear first.
-    // TODO: Consider adding predictable itteration order (sort file entries by name?)
    let result = panic::catch_unwind(|| {
        assert_cli::Assert::main_binary()
-            .with_args(&[dir_s])
+            .with_args(&["-p", dir_s])
            .stdout()
-            .contains(r)
+            .contains(a.as_str())
+            .stdout()
+            .contains(b.as_str())
            .unwrap();
    });
    if result.is_err() {
        assert_cli::Assert::main_binary()
-            .with_args(&[dir_s])
+            .with_args(&["-p", dir_s])
            .stdout()
-            .contains(r2)
+            .contains(a.as_str())
+            .stdout()
+            .contains(b2.as_str())
            .unwrap();
    }
 }

-#[cfg(target_os = "macos")]
-fn hard_link_output(dir_s: &str, file_path_s: &str, link_name_s: &str) -> (String, String) {
-    let r = format!(
-        "{}
-{}",
-        format_string(dir_s, true, true, " 4.0K", ""),
-        format_string(file_path_s, true, true, " 4.0K", "└──")
-    );
-    let r2 = format!(
-        "{}
-{}",
-        format_string(dir_s, true, true, " 4.0K", ""),
-        format_string(link_name_s, true, true, " 4.0K", "└──")
-    );
-    (r, r2)
-}
-
-#[cfg(target_os = "linux")]
-fn hard_link_output(dir_s: &str, file_path_s: &str, link_name_s: &str) -> (String, String) {
-    let r = format!(
-        "{}
-{}",
-        format_string(dir_s, true, true, " 8.0K", ""),
-        format_string(file_path_s, true, true, " 4.0K", "└──")
-    );
-    let r2 = format!(
-        "{}
-{}",
-        format_string(dir_s, true, true, " 8.0K", ""),
-        format_string(link_name_s, true, true, " 4.0K", "└──")
-    );
-    (r, r2)
-}
-
-//Check we don't recurse down an infinite symlink tree
+// Check we don't recurse down an infinite symlink tree
 #[test]
 pub fn test_recursive_sym_link() {
    let dir = Builder::new().tempdir().unwrap();
@@ -245,30 +252,82 @@ pub fn test_recursive_sym_link() {
        .output();
    assert!(c.is_ok());

+    let a = format!(" ─┬ {}", dir_s);
+    let b = format!("  └── {}", link_name_s);
+
    assert_cli::Assert::main_binary()
-        .with_args(&[dir_s])
+        .with_args(&["-p", dir_s])
        .stdout()
-        .contains(recursive_sym_link_output(dir_s, link_name_s))
+        .contains(a.as_str())
+        .stdout()
+        .contains(b.as_str())
        .unwrap();
 }

-#[cfg(target_os = "macos")]
-fn recursive_sym_link_output(dir: &str, link_name: &str) -> String {
-    format!(
-        "{}
-{}",
-        format_string(dir, true, true, " 4.0K", ""),
-        format_string(link_name, true, true, " 4.0K", "└──",),
-    )
-}
-#[cfg(target_os = "linux")]
-fn recursive_sym_link_output(dir: &str, link_name: &str) -> String {
-    format!(
-        "{}
-{}",
-        format_string(dir, true, true, " 4.0K", ""),
-        format_string(link_name, true, true, "   0B", "└──",),
-    )
+// Check against directories and files whos names are substrings of each other
+#[test]
+pub fn test_substring_of_names() {
+    assert_cli::Assert::main_binary()
+        .with_args(&["-c", "src/test_dir2"])
+        .stdout()
+        .is(no_substring_of_names_output().as_str())
+        .unwrap();
 }

-// TODO: add test for bad path
+#[cfg(target_os = "linux")]
+fn no_substring_of_names_output() -> String {
+    "
+  24K ─┬ test_dir2
+ 8.0K  ├─┬ dir
+ 4.0K  │ └── hello
+ 8.0K  ├─┬ dir_substring
+ 4.0K  │ └── hello
+ 4.0K  └── dir_name_clash
+    "
+    .into()
+}
+
+#[cfg(target_os = "macos")]
+fn no_substring_of_names_output() -> String {
+    "
+  12K ─┬ test_dir2
+ 4.0K  ├─┬ dir
+ 4.0K  │ └── hello
+ 4.0K  ├── dir_name_clash
+ 4.0K  └─┬ dir_substring
+ 4.0K    └── hello
+    "
+    .into()
+}
+
+// Check against directories and files whos names are substrings of each other
+#[test]
+pub fn test_ignore_dir() {
+    assert_cli::Assert::main_binary()
+        .with_args(&["-c", "-X", "dir_substring", "src/test_dir2"])
+        .stdout()
+        .is(ignore_dir_output().as_str())
+        .unwrap();
+}
+
+#[cfg(target_os = "linux")]
+fn ignore_dir_output() -> String {
+    "
+  16K ─┬ test_dir2
+ 8.0K  ├─┬ dir
+ 4.0K  │ └── hello
+ 4.0K  └── dir_name_clash
+    "
+    .into()
+}
+
+#[cfg(target_os = "macos")]
+fn ignore_dir_output() -> String {
+    "
+ 8.0K ─┬ test_dir2
+ 4.0K  ├─┬ dir
+ 4.0K  │ └── hello
+ 4.0K  └── dir_name_clash
+    "
+    .into()
+}
@@ -1,87 +1,208 @@
+use jwalk::DirEntry;
+use std::cmp::Ordering;
 use std::collections::HashMap;
 use std::collections::HashSet;
-use std::cmp::Ordering;

-use walkdir::WalkDir;
-
-use std::path::Path;
-use std::path::PathBuf;
+use jwalk::WalkDir;

 mod platform;
 use self::platform::*;

-pub fn get_dir_tree(
-    filenames: &Vec<&str>,
-    apparent_size: bool,
-) -> (bool, HashMap<String, u64>, Vec<String>) {
-    let mut permissions = 0;
-    let mut inodes: HashSet<(u64, u64)> = HashSet::new();
-    let mut data: HashMap<String, u64> = HashMap::new();
-    let mut top_level_names = Vec::new();
-
-    for b in filenames {
-        let top_level_name = strip_end_slashes(b);
-        examine_dir(
-            &Path::new(&top_level_name).to_path_buf(),
-            apparent_size,
-            &mut inodes,
-            &mut data,
-            &mut permissions,
-        );
-        top_level_names.push(top_level_name);
-    }
-    (permissions == 0, data, top_level_names)
+#[derive(Debug, Default, Eq)]
+pub struct Node {
+    pub name: String,
+    pub size: u64,
+    pub children: Vec<Node>,
 }

-fn strip_end_slashes(s: &str) -> String {
-    let mut new_name = String::from(s);
-    while new_name.chars().last() == Some('/') && new_name.len() != 1 {
-        new_name.pop();
+impl Ord for Node {
+    fn cmp(&self, other: &Self) -> Ordering {
+        if self.size == other.size {
+            self.name.cmp(&other.name)
+        } else {
+            self.size.cmp(&other.size)
+        }
+    }
+}
+
+impl PartialOrd for Node {
+    fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
+        Some(self.cmp(other))
+    }
+}
+
+impl PartialEq for Node {
+    fn eq(&self, other: &Self) -> bool {
+        self.name == other.name && self.size == other.size && self.children == other.children
+    }
+}
+
+pub fn is_a_parent_of(parent: &str, child: &str) -> bool {
+    (child.starts_with(parent) && child.chars().nth(parent.chars().count()) == Some('/'))
+        || parent == "/"
+}
+
+pub fn simplify_dir_names(filenames: Vec<&str>) -> HashSet<String> {
+    let mut top_level_names: HashSet<String> = HashSet::with_capacity(filenames.len());
+    let mut to_remove: Vec<String> = Vec::with_capacity(filenames.len());
+
+    for t in filenames {
+        let top_level_name = strip_end_slash(t);
+        let mut can_add = true;
+
+        for tt in top_level_names.iter() {
+            if is_a_parent_of(&top_level_name, tt) {
+                to_remove.push(tt.to_string());
+            } else if is_a_parent_of(tt, &top_level_name) {
+                can_add = false;
+            }
+        }
+        to_remove.sort_unstable();
+        top_level_names.retain(|tr| to_remove.binary_search(tr).is_err());
+        to_remove.clear();
+        if can_add {
+            top_level_names.insert(strip_end_slash(t).to_owned());
+        }
+    }
+
+    top_level_names
+}
+
+pub fn get_dir_tree(
+    top_level_names: &HashSet<String>,
+    ignore_directory: Option<&str>,
+    apparent_size: bool,
+    limit_filesystem: bool,
+    threads: Option<usize>,
+) -> (bool, HashMap<String, u64>) {
+    let mut permissions = 0;
+    let mut data: HashMap<String, u64> = HashMap::new();
+    let restricted_filesystems = if limit_filesystem {
+        get_allowed_filesystems(top_level_names)
+    } else {
+        None
+    };
+
+    for b in top_level_names.iter() {
+        examine_dir(
+            &b,
+            apparent_size,
+            &restricted_filesystems,
+            &ignore_directory,
+            &mut data,
+            &mut permissions,
+            threads,
+        );
+    }
+    (permissions == 0, data)
+}
+
+fn get_allowed_filesystems(top_level_names: &HashSet<String>) -> Option<HashSet<u64>> {
+    let mut limit_filesystems: HashSet<u64> = HashSet::new();
+    for file_name in top_level_names.iter() {
+        if let Ok(a) = get_filesystem(file_name) {
+            limit_filesystems.insert(a);
+        }
+    }
+    Some(limit_filesystems)
+}
+
+pub fn strip_end_slash(mut new_name: &str) -> &str {
+    while (new_name.ends_with('/') || new_name.ends_with("/.")) && new_name.len() > 1 {
+        new_name = &new_name[..new_name.len() - 1];
    }
    new_name
 }

 fn examine_dir(
-    top_dir: &PathBuf,
+    top_dir: &str,
    apparent_size: bool,
-    inodes: &mut HashSet<(u64, u64)>,
+    filesystems: &Option<HashSet<u64>>,
+    ignore_directory: &Option<&str>,
    data: &mut HashMap<String, u64>,
-    permissions: &mut u64,
+    file_count_no_permission: &mut u64,
+    threads: Option<usize>,
 ) {
-    for entry in WalkDir::new(top_dir) {
-        match entry {
-            Ok(e) => {
-                let maybe_size_and_inode = get_metadata(&e, apparent_size);
-
-                match maybe_size_and_inode {
-                    Some((size, maybe_inode)) => {
-                        if !apparent_size {
-                            if let Some(inode_dev_pair) = maybe_inode {
-                                if inodes.contains(&inode_dev_pair) {
-                                    continue;
-                                }
-                                inodes.insert(inode_dev_pair);
-                            }
-                        }
-                        let mut e_path = e.path().to_path_buf();
-                        loop {
-                            let path_name = e_path.to_string_lossy().to_string();
-                            let s = data.entry(path_name).or_insert(0);
-                            *s += size;
-                            if e_path == *top_dir {
-                                break;
-                            }
-                            e_path.pop();
-                        }
-                    }
-                    None => *permissions += 1,
+    let mut inodes: HashSet<(u64, u64)> = HashSet::new();
+    let mut iter = WalkDir::new(top_dir)
+        .preload_metadata(true)
+        .skip_hidden(false);
+    if let Some(threads_to_start) = threads {
+        iter = iter.num_threads(threads_to_start);
+    }
+    for entry in iter {
+        if let Ok(e) = entry {
+            let maybe_size_and_inode = get_metadata(&e, apparent_size);
+            if let Some(d) = ignore_directory {
+                if e.path().to_string_lossy().contains(*d) {
+                    continue;
                }
            }
-            _ => {}
+
+            match maybe_size_and_inode {
+                Some((size, maybe_inode)) => {
+                    if !should_ignore_file(apparent_size, filesystems, &mut inodes, maybe_inode) {
+                        process_file_with_size_and_inode(top_dir, data, e, size)
+                    }
+                }
+                None => *file_count_no_permission += 1,
+            }
+        } else {
+            *file_count_no_permission += 1
        }
    }
 }
-pub fn compare_tuple(a :&(String, u64), b: &(String, u64)) -> Ordering {
+
+fn should_ignore_file(
+    apparent_size: bool,
+    restricted_filesystems: &Option<HashSet<u64>>,
+    inodes: &mut HashSet<(u64, u64)>,
+    maybe_inode: Option<(u64, u64)>,
+) -> bool {
+    if !apparent_size {
+        if let Some(inode_dev_pair) = maybe_inode {
+            // Ignore files on different devices (if flag applied)
+            if restricted_filesystems.is_some()
+                && !restricted_filesystems
+                    .as_ref()
+                    .unwrap()
+                    .contains(&inode_dev_pair.1)
+            {
+                return true;
+            }
+            // Ignore files already visited or symlinked
+            if inodes.contains(&inode_dev_pair) {
+                return true;
+            }
+            inodes.insert(inode_dev_pair);
+        }
+    }
+    false
+}
+
+fn process_file_with_size_and_inode(
+    top_dir: &str,
+    data: &mut HashMap<String, u64>,
+    e: DirEntry,
+    size: u64,
+) {
+    // This path and all its parent paths have their counter incremented
+    for path_name in e.path().ancestors() {
+        // This is required due to bug in Jwalk that adds '/' to all sub dir lists
+        // see: https://github.com/jessegrosjean/jwalk/issues/13
+        if path_name.to_string_lossy() == "/" && top_dir != "/" {
+            continue;
+        }
+        let path_name = path_name.to_string_lossy();
+        let s = data.entry(path_name.to_string()).or_insert(0);
+        *s += size;
+        if path_name == top_dir {
+            break;
+        }
+    }
+}
+
+pub fn sort_by_size_first_name_second(a: &(String, u64), b: &(String, u64)) -> Ordering {
    let result = b.1.cmp(&a.1);
    if result == Ordering::Equal {
        a.0.cmp(&b.0)
@@ -90,16 +211,100 @@ pub fn compare_tuple(a :&(String, u64), b: &(String, u64)) -> Ordering {
    }
 }

-pub fn sort<'a>(data: HashMap<String, u64>) -> Vec<(String, u64)> {
+pub fn sort(data: HashMap<String, u64>) -> Vec<(String, u64)> {
    let mut new_l: Vec<(String, u64)> = data.iter().map(|(a, b)| (a.clone(), *b)).collect();
-    new_l.sort_by(|a, b| compare_tuple(&a, &b));
+    new_l.sort_unstable_by(sort_by_size_first_name_second);
    new_l
 }

-pub fn find_big_ones<'a>(new_l: Vec<(String, u64)>, max_to_show: usize) -> Vec<(String, u64)> {
+pub fn find_big_ones(new_l: Vec<(String, u64)>, max_to_show: usize) -> Vec<(String, u64)> {
    if max_to_show > 0 && new_l.len() > max_to_show {
-        new_l[0..max_to_show + 1].to_vec()
+        new_l[0..max_to_show].to_vec()
    } else {
        new_l
    }
 }
+
+pub fn trim_deep_ones(
+    input: Vec<(String, u64)>,
+    max_depth: u64,
+    top_level_names: &HashSet<String>,
+) -> Vec<(String, u64)> {
+    let mut result: Vec<(String, u64)> = Vec::with_capacity(input.len() * top_level_names.len());
+
+    for name in top_level_names {
+        let my_max_depth = name.matches('/').count() + max_depth as usize;
+        let name_ref: &str = name.as_ref();
+
+        for &(ref k, ref v) in input.iter() {
+            if k.starts_with(name_ref) && k.matches('/').count() <= my_max_depth {
+                result.push((k.clone(), *v));
+            }
+        }
+    }
+    result
+}
+
+mod tests {
+    #[allow(unused_imports)]
+    use super::*;
+
+    #[test]
+    fn test_simplify_dir() {
+        let mut correct = HashSet::new();
+        correct.insert("a".to_string());
+        assert_eq!(simplify_dir_names(vec!["a"]), correct);
+    }
+
+    #[test]
+    fn test_simplify_dir_rm_subdir() {
+        let mut correct = HashSet::new();
+        correct.insert("a/b".to_string());
+        assert_eq!(simplify_dir_names(vec!["a/b", "a/b/c", "a/b/d/f"]), correct);
+    }
+
+    #[test]
+    fn test_simplify_dir_duplicates() {
+        let mut correct = HashSet::new();
+        correct.insert("a/b".to_string());
+        correct.insert("c".to_string());
+        assert_eq!(simplify_dir_names(vec!["a/b", "a/b//", "c", "c/"]), correct);
+    }
+    #[test]
+    fn test_simplify_dir_rm_subdir_and_not_substrings() {
+        let mut correct = HashSet::new();
+        correct.insert("b".to_string());
+        correct.insert("c/a/b".to_string());
+        correct.insert("a/b".to_string());
+        assert_eq!(simplify_dir_names(vec!["a/b", "c/a/b/", "b"]), correct);
+    }
+
+    #[test]
+    fn test_simplify_dir_dots() {
+        let mut correct = HashSet::new();
+        correct.insert("src".to_string());
+        assert_eq!(simplify_dir_names(vec!["src/."]), correct);
+    }
+
+    #[test]
+    fn test_simplify_dir_substring_names() {
+        let mut correct = HashSet::new();
+        correct.insert("src".to_string());
+        correct.insert("src_v2".to_string());
+        assert_eq!(simplify_dir_names(vec!["src/", "src_v2"]), correct);
+    }
+
+    #[test]
+    fn test_is_a_parent_of() {
+        assert!(is_a_parent_of("/usr", "/usr/andy"));
+        assert!(is_a_parent_of("/usr", "/usr/andy/i/am/descendant"));
+        assert!(!is_a_parent_of("/usr/andy", "/usr"));
+        assert!(!is_a_parent_of("/usr/andy", "/usr/sibling"));
+    }
+
+    #[test]
+    fn test_is_a_parent_of_root() {
+        assert!(is_a_parent_of("/", "/usr/andy"));
+        assert!(is_a_parent_of("/", "/usr"));
+    }
+}
@@ -1,63 +1,61 @@
-use walkdir::DirEntry;
+use jwalk::DirEntry;
+use std::fs;
+use std::io;

+#[cfg(target_family = "unix")]
 fn get_block_size() -> u64 {
    // All os specific implementations of MetatdataExt seem to define a block as 512 bytes
    // https://doc.rust-lang.org/std/os/linux/fs/trait.MetadataExt.html#tymethod.st_blocks
    512
 }

-#[cfg(target_os = "linux")]
-pub fn get_metadata(d: &DirEntry, use_apparent_size: bool) -> Option<(u64, Option<(u64, u64)>)> {
-    use std::os::linux::fs::MetadataExt;
-    match d.metadata().ok() {
-        Some(md) => {
-            let inode = Some((md.st_ino(), md.st_dev()));
-            if use_apparent_size {
-                Some((md.len(), inode))
-            } else {
-                Some((md.st_blocks() * get_block_size(), inode))
-            }
-        }
-        None => None,
-    }
-}
-
-#[cfg(target_os = "unix")]
+#[cfg(target_family = "unix")]
 pub fn get_metadata(d: &DirEntry, use_apparent_size: bool) -> Option<(u64, Option<(u64, u64)>)> {
    use std::os::unix::fs::MetadataExt;
-    match d.metadata().ok() {
-        Some(md) => {
-            let inode = Some((md.ino(), md.dev()));
-            if use_apparent_size {
-                Some((md.len(), inode))
-            } else {
-                Some((md.blocks() * get_block_size(), inode))
-            }
+    d.metadata.as_ref().unwrap().as_ref().ok().map(|md| {
+        let inode = Some((md.ino(), md.dev()));
+        if use_apparent_size {
+            (md.len(), inode)
+        } else {
+            (md.blocks() * get_block_size(), inode)
        }
-        None => None,
-    }
+    })
 }

-#[cfg(target_os = "macos")]
+#[cfg(target_family = "windows")]
 pub fn get_metadata(d: &DirEntry, use_apparent_size: bool) -> Option<(u64, Option<(u64, u64)>)> {
-    use std::os::macos::fs::MetadataExt;
-    match d.metadata().ok() {
-        Some(md) => {
-            let inode = Some((md.st_ino(), md.st_dev()));
-            if use_apparent_size {
-                Some((md.len(), inode))
-            } else {
-                Some((md.st_blocks() * get_block_size(), inode))
-            }
-        }
-        None => None,
-    }
+    use std::os::windows::fs::MetadataExt;
+    d.metadata.as_ref().unwrap().as_ref().ok().map(|md| {
+        let windows_equivalent_of_inode = Some((md.file_index(), md.volume_serial_number()));
+        (md.file_size(), windows_equivalent_of_inode)
+    })
 }

-#[cfg(not(any(target_os = "linux", target_os = "unix", target_os = "macos")))]
+#[cfg(all(not(target_family = "windows"), not(target_family = "unix")))]
 pub fn get_metadata(d: &DirEntry, _apparent: bool) -> Option<(u64, Option<(u64, u64)>)> {
-    match d.metadata().ok() {
-        Some(md) => Some((md.len(), None)),
-        None => None,
-    }
+    d.metadata
+        .as_ref()
+        .unwrap()
+        .as_ref()
+        .ok()
+        .map(|md| (md.len(), None))
+}
+
+#[cfg(target_family = "unix")]
+pub fn get_filesystem(file_path: &str) -> Result<u64, io::Error> {
+    use std::os::unix::fs::MetadataExt;
+    let metadata = fs::metadata(file_path)?;
+    Ok(metadata.dev())
+}
+
+#[cfg(target_family = "windows")]
+pub fn get_device(file_path: &str) -> Result<u64, io::Error> {
+    use std::os::windows::fs::MetadataExt;
+    let metadata = fs::metadata(file_path)?;
+    Ok(metadata.volume_serial_number())
+}
+
+#[cfg(all(not(target_family = "windows"), not(target_family = "unix")))]
+pub fn get_device(file_path: &str) -> Result<u64, io::Error> {
+    None
 }
Author	SHA1	Message	Date
andy.boot	352c0f7d90	Increment version number	2020-01-19 09:32:49 +00:00
andy.boot	842a8ec673	Clean up clippy warnings	2020-01-19 09:32:35 +00:00
andy.boot	d97edba041	Add option to ignore directories https://github.com/bootandy/dust/issues/46 Add -X flag used to ignore any file or directory that matches the provided substring. This means that -X e will ignore any file or directory with an 'e' in it.	2020-01-19 09:23:13 +00:00
andy boot	f64e0094f1	Merge pull request #53 from bootandy/single_cpu Fix dust for single core machines	2020-01-18 23:06:28 +00:00
andy.boot	3d2477e554	Allow dust to run on single core machines Force dust to use 2 threads if there is only 1 cpu JWalk breaks if it tries to run on a single cpu https://github.com/jessegrosjean/jwalk/issues/15 This is a hack because I can't figure out how to fix JWalk. This code and the num_cpu crate can be removed when the bug is fixed Also I have conflated cpus with cores while describing this issue. It is very difficult to test as I don't have a single core machine.	2020-01-18 22:04:08 +00:00
andy.boot	350d695f7c	Add num_cpus as Cargo dependency Will be used to detect single core computers which crash Jwalk	2020-01-18 21:57:11 +00:00
andy boot	f8b8b8a788	Merge pull request #51 from bootandy/ab-exclude Support excluding filesystems with -x	2020-01-18 21:54:41 +00:00
andy.boot	b9c27f9838	get_filesystem returns Result instead of option Removes unwrap and returns a Result instead of panicing if an invalid path is given. Previously if the flag: '-x' was provided with an argument of an invalid directory the code would crash here	2020-01-16 23:50:56 +00:00
andy.boot	5541df6a73	Refactor code Reduce complexity of examine_dir. No logic changes	2020-01-15 20:10:33 +00:00
andy.boot	bdc3d404ef	Support excluding filesystems with -x https://github.com/bootandy/dust/issues/50 Add optional -x flag to limit search to the current filesystem. Add (untested) support for windows for the equivalent of inode and device.	2020-01-15 19:51:16 +00:00
andy boot	f395a7d768	Merge pull request #49 from bootandy/ab-upgrade Upgrade libraries. Fix assert_cli	2019-12-30 22:07:04 +00:00
andy.boot	a36eec6cae	Increment version number	2019-12-30 21:40:30 +00:00
Adam Lesperance	38938e005e	Fix colors on windows * Initialize ansi_term if we're on windows * Silence build warning on non-unix targets * Update ansi-term which has windows specific fixes (and assert_cli while I'm at it)	2019-12-30 21:36:49 +00:00
andy.boot	da61b15715	Upgrade libraries. Fix assert_cli New assert_cli library requires we cast the param passed to 'is()' as it can no longer cast implicitly. I am guessing this is because it is due to confusion between whether to cast to u8 or str	2019-12-30 21:23:53 +00:00
andy boot	0b22d0a977	Merge pull request #47 from bootandy/ab-bug-fix Ab bug fix	2019-12-30 21:12:37 +00:00
andy.boot	356d14ac0f	Hack fix around JWalk behaviour. Jwalk returns '/' as a child of the current node which breaks things. https://github.com/jessegrosjean/jwalk/issues/13	2019-12-23 15:51:12 +00:00
andy.boot	311bc45388	Verify that '/' is parent of everything Bug could occur when run with '/' as it wasn't considered the parent of '/usr' due to having the same number of '/'s in the name	2019-12-23 15:50:01 +00:00
andy.boot	ef66fb3938	Remove useless sort The data coming in is already sorted. We should not need to sort it a second time	2019-12-23 15:49:26 +00:00
andy.boot	b934445e04	Pin jwalk to dependency version https://github.com/jessegrosjean/jwalk/issues/13 Having raised the above issue I don't want it fixed in a minor version as I have added a work around	2019-12-23 15:48:38 +00:00
andy boot	a6839c020f	Merge pull request #43 from bootandy/no_color Add flag for No color, refactor tests	2019-12-08 23:50:58 +00:00
andy.boot	7e47d5b47a	Increment version number	2019-12-08 23:36:48 +00:00
andy.boot	6a65570f3f	Refactor tests Make use of the 'is' more to test the entire output. Add test for no_color mode. Replace several calls to format_string with calls that build a string directly. I feel format_string is becoming unweildly and this simplfies the tests	2019-12-08 23:34:28 +00:00
andy.boot	a4ca78dbe4	Add option flag for no colors https://github.com/bootandy/dust/issues/37	2019-12-08 14:46:45 +00:00
andy boot	bfbe8a57ae	Merge pull request #42 from bootandy/cleanup Cleanup code & fix issue	2019-12-07 09:16:51 +00:00
andy.boot	b4b73e45f3	Cargo update	2019-12-05 21:51:04 +00:00
andy.boot	78119aba0f	Mark function as ignored by clippy We don't want to collapse this if - it is easier to reason about this way	2019-12-05 21:50:26 +00:00
andy.boot	5535478fe8	Fix substring bug When one directory was a substring of another the directory would appear as a subdirectory instead of a sibling Fixed originally by this: `6e03dd77e6` Broken by this: `db6c8a019d` Added integration test as this has bitten me before	2019-12-05 21:35:15 +00:00
andy.boot	7ba91a4a22	Rename variable cpu -> threads. threads more accurately represents the number of threads we will start to run	2019-12-04 20:49:45 +00:00
andy boot	79416fd5fc	Merge pull request #40 from AdminXVII/parallel-walk Use jwalk instead of walkdir: parallel walking for performance boost	2019-12-04 20:45:25 +00:00
Xavier L'Heureux	b66523cff3	Apply clippy lints	2019-12-03 18:34:47 -05:00
Xavier L'Heureux	19a41aa382	Add CLI option for the number of threads to spawn	2019-12-03 18:27:02 -05:00
Xavier L'Heureux	62ac9b623a	Make sure to count the hidden directories	2019-11-26 08:31:52 -05:00
Xavier L'Heureux	bf28d42483	Update Performance section of README	2019-11-26 08:31:52 -05:00
Xavier L'Heureux	f8ce6c97bf	Use more rusty patterns and preallocate enough space	2019-11-26 08:31:52 -05:00
Xavier L'Heureux	86b3cccaf6	perf(IO): use parallel walkdir (jwalk) for super faster traversal	2019-11-26 08:31:52 -05:00
andy boot	3c920431fa	Merge pull request #38 from lespea/update_deps Latest deps	2019-11-25 23:32:09 +00:00
Adam Lesperance	a1ece05af5	Testing deps should only be used when testing	2019-11-21 00:05:53 -06:00
Adam Lesperance	cef2c588b7	Latest deps	2019-11-20 23:05:57 -06:00
andy boot	7d8e498238	Merge pull request #36 from bootandy/try_to_fix_releases Update secure key in Travis	2019-11-02 01:11:42 +00:00
andy boot	53c7a69dcb	Merge pull request #35 from bootandy/fix-version Provide version information with -V	2019-11-02 00:45:36 +00:00
andy.boot	9a9cbefd3d	Provide version information with -V clap does most of this for you - I had forgotten to wire it up https://github.com/bootandy/dust/issues/33 increment build version	2019-11-02 00:42:57 +00:00
andy boot	224a2c6f25	Merge pull request #32 from mvertescher/update-edition Upgrade to the 2018 edition	2019-10-27 10:39:04 +00:00
Matt Vertescher	99003cbba9	Upgrade to the 2018 edition	2019-10-26 15:19:07 -04:00
andy.boot	c83803b440	Add comment to travis file So I don't forget how to do a release next time	2019-10-09 00:43:04 +01:00
andy.boot	a41862d799	Travis release: Read API key from variable secure key was probably removed. Read from travis ci env variable instead	2019-10-09 00:35:30 +01:00
andy.boot	6ab46d8471	Add reverse instructions	2019-10-08 22:46:52 +01:00
andy boot	c727eb2d11	Merge pull request #31 from bootandy/nodes_rev Refactor & support reverse	2019-10-08 21:31:11 +01:00
andy.boot	0effaa7fd7	Increment version	2019-10-08 21:05:37 +01:00
andy.boot	25c50f88c4	cargo upgrade	2019-10-08 21:05:09 +01:00
andy.boot	0c19a66432	Add test for reverse flag	2019-10-08 20:57:44 +01:00
andy.boot	4cffc4370b	Bring back the reverse flag Following the large refactor on the previous commit, this commit fixes the reverse functionality. Depth detection moved into the tree building instead of being calculated when drawing the tree to screen	2019-10-06 22:00:40 +01:00
andy.boot	db6c8a019d	Massive refactor WIP Replace array of (string, int) pairs with tree of nodes. A tree of nodes more accurately represents the underlying file structure and hence is a better fit for the problem space. Regression: Reverse doesn't work in this commit. I suspect more methods can be simplifed and reduced.	2019-10-05 17:57:47 +01:00
andy.boot	e03094a4fa	Add reverse flag Pull several variables related to how output is printed into DisplayData struct	2019-10-03 23:07:52 +01:00
andy.boot	1d9a56e025	A way of supporting reverse	2019-10-02 22:31:49 +01:00
andy.boot	ec2d9e19d4	Run format, introduce new function. strip_end_slash_including_root will remove end slashes including the root directory. The root directory has been a long running problem because if we strip the final slash we will run dust on no directory instead of the root.	2019-10-02 20:14:13 +01:00
andy.boot	9fbfcb275a	pull out a method (will be needed for reverse)	2019-10-02 20:06:09 +01:00
andy.boot	1c60d1e2ac	Display: replace boolean with integer count This will probably be useful when i refactor for the reverse mode	2019-10-02 19:54:00 +01:00
andy.boot	fd35734a94	Simplify string code, remove into	2019-10-02 19:48:57 +01:00
andy boot	c6f4ace2b6	Merge pull request #30 from bootandy/neaten Neaten	2019-10-02 19:16:31 +01:00
Bob	d46b63fad8	Add detection of files which fail permission Old code caught some file permission denied but not all.	2019-10-01 22:44:17 +01:00
Bob	872a49bb7d	better var name	2019-10-01 22:35:29 +01:00
andy boot	04c6c204c3	Merge pull request #27 from bootandy/new2	2019-10-01 22:26:56 +01:00
Bob	7ac01e8166	Increment version number	2019-10-01 22:18:36 +01:00
Bob	2f7a88e8dc	Fix issues from running on root directory clean up: `80338f4` Fixes -d flag to work again. Add test to stop regression	2019-10-01 22:18:16 +01:00
Bob	2ca2cebdad	New Cargo lock	2019-09-29 11:28:51 +01:00
bootandy	80338f4731	Fix running on root dir / Fixes: https://github.com/bootandy/dust/issues/22 Allows code to run on the root directory	2019-07-04 00:03:33 +01:00
bootandy	d327bd2e68	Fix code to handle single dots in path Before this fix adding a single dot to the end of a path would cause the code to crash.	2019-07-02 00:56:43 +01:00
bootandy	7db6cf2f32	Add test to handle single dot in path	2019-07-02 00:54:58 +01:00
bootandy	76d0762c97	Add assert to stop infinite loops	2019-07-01 22:43:10 +01:00
bootandy	6e03dd77e6	Fix obscure display bug When one directory was a substring of another with files in the files could appear as children of the wrong directory Fix: https://github.com/bootandy/dust/issues/25	2019-07-01 22:25:06 +01:00
bootandy	4906e9efda	comment typos	2019-07-01 22:25:06 +01:00
bootandy	876609f2cb	Obey new clippy Clippy is like having a reviewer fix your dodgy code.	2019-07-01 22:25:06 +01:00
bootandy	12775db94b	Update git ignore to ignore idea	2019-07-01 22:25:06 +01:00
bootandy	bfaf5ee173	Add bash line to ci script	2019-07-01 22:25:06 +01:00
bootandy	fd68330815	Update cargo lock	2019-07-01 22:25:06 +01:00
andy.boot	0bf4ebf554	Fix minor color bug If we are not using RED then the Color should be the terminal default not 7	2018-06-19 23:39:23 +01:00
andy boot	cab24f58d5	Merge pull request #20 from bootandy/refac Refactor	2018-05-10 18:28:07 +01:00
andy.boot	b1b933d851	Refactor & Optimize use of depth Code Refactored Using Depth now prunes the tree below the displayable depth so display calls finish quicker.	2018-05-10 17:36:56 +01:00
andy.boot	6a86e8befd	Increment version number	2018-05-09 11:46:42 +01:00
andy boot	3fb91a6c29	Merge pull request #19 from bootandy/rm_dup_input code to remove duplicate arguments	2018-05-09 11:44:38 +01:00
andy.boot	51561994c5	Break up display_node function slightly Also: run rustformat	2018-05-09 11:28:23 +01:00
andy.boot	ce0e14bf00	Tweak output - the root node now has a: ─┬	2018-05-09 10:58:32 +01:00
andy.boot	dd75ec4aa7	wip: code to remove duplicate arguments Also handle case where an argument is a substring of another argument	2018-05-09 10:35:30 +01:00
andy boot	65cd42736a	Update README.md	2018-05-09 09:43:30 +01:00
andy boot	4792e97177	Merge pull request #18 from bootandy/fixes Fixes	2018-05-02 09:51:21 +01:00
bootandy	3e9f09e339	Remove unnecessary path & pathbuf code	2018-05-02 00:42:03 +01:00
bootandy	dba465a094	Tweak error message	2018-05-02 00:39:57 +01:00
bootandy	25d1ee7b43	Remove naked unwrap	2018-05-02 00:39:57 +01:00
bootandy	2556885622	Rust format	2018-05-02 00:39:57 +01:00
bootandy	8c088a7026	Fix: Passing a string into -n will no longer panic fixes: #https://github.com/bootandy/dust/issues/16	2018-05-02 00:39:57 +01:00
bootandy	39db8b86fd	Replace simple match with map_or	2018-05-01 14:38:34 +01:00
bootandy	c5830c5d00	Stop using target_os just use target_family target_family unix covers linux and mac and wraps up the call for inodes in a common interface.	2018-05-01 13:59:48 +01:00
bootandy	b68c450710	use eprintln!	2018-05-01 13:55:19 +01:00
andy.boot	6e2e5761d8	Increment version	2018-04-27 12:46:27 +01:00