Revert "Replace libc with rustix"

This reverts commit 571312dd6e.
Update version in README, man page
2026-10-29 08:05:57 +00:00 · 2022-12-05 09:52:27 +01:00 · 2022-12-05 09:48:10 +01:00 · 2022-12-05 09:45:38 +01:00 · 2022-12-05 09:32:07 +01:00 · 2022-12-05 09:31:43 +01:00
11 changed files with 1401 additions and 865 deletions
@@ -1,7 +1,7 @@
 name: CICD

 env:
-  MIN_SUPPORTED_RUST_VERSION: "1.56.0"
+  MIN_SUPPORTED_RUST_VERSION: "1.60.0"
  CICD_INTERMEDIATES_DIR: "_cicd-intermediates"

 on:
@@ -1,19 +1,27 @@
 # unreleased

-## Changes
-
-
 ## Features

+- Significantly improved performance, see #173 and #176 (@sharifhsn)
+- Added variable panels through the `--panels` and `--terminal-width` flags, see [#13](https://github.com/sharkdp/hexyl/issues/13) and [#164](https://github.com/sharkdp/hexyl/pull/164) (@sharifhsn)
+- Added new `--group-bytes`/`-g` option, see #104 and #170 (@RinHizakura)
+- Added new `--base B` option (where `B` can be `binary`, `octal`, `decimal` or `hexadecimal`), see #147 and #178 (@sharifhsn)
+- Show actual zero bytes as `⋄` in the character panel (previously: `0`), in order not to confuse them with ASCII
+  `0` bytes if colors are deactivated. Closes #166 (@sharkdp)

-## Bugfixes
+## `hexyl` as a library

+- Breaking change: `Printer::new` is deprecated as a part of the public API. Alternatively, you can now construct a `Printer` using the `PrinterBuilder` builder API, see [#168](https://github.com/sharkdp/hexyl/pull/168). (@sharifhsn)

 ## Other

+- More tests for the squeezing feature, see #177 (@mkatychev)

-## Packaging
+## Thank you

+Special thanks go to @sharifhsn, not just for the new features,
+bugfixes and performance improvements. But also for many internal
+improvements of the code base and other maintenance tasks.


 # v0.10.0
@@ -4,33 +4,30 @@ version = 3

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+ "pretty_assertions",
+ "terminal_size",
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 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "957e51f3646910546462e67d5f7599b9e4fb8acdd304b087a6494730f9eebf04"
+checksum = "f962df74c8c05a667b5ee8bcf162993134c104e96440b663c8daa176dc772d8c"

 [[package]]
 name = "wait-timeout"
@@ -428,3 +502,66 @@ name = "winapi-x86_64-pc-windows-gnu"
 version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
+
+[[package]]
+name = "windows-sys"
+version = "0.42.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5a3e1820f08b8513f676f7ab6c1f99ff312fb97b553d30ff4dd86f9f15728aa7"
+dependencies = [
+ "windows_aarch64_gnullvm",
+ "windows_aarch64_msvc",
+ "windows_i686_gnu",
+ "windows_i686_msvc",
+ "windows_x86_64_gnu",
+ "windows_x86_64_gnullvm",
+ "windows_x86_64_msvc",
+]
+
+[[package]]
+name = "windows_aarch64_gnullvm"
+version = "0.42.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "41d2aa71f6f0cbe00ae5167d90ef3cfe66527d6f613ca78ac8024c3ccab9a19e"
+
+[[package]]
+name = "windows_aarch64_msvc"
+version = "0.42.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dd0f252f5a35cac83d6311b2e795981f5ee6e67eb1f9a7f64eb4500fbc4dcdb4"
+
+[[package]]
+name = "windows_i686_gnu"
+version = "0.42.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fbeae19f6716841636c28d695375df17562ca208b2b7d0dc47635a50ae6c5de7"
+
+[[package]]
+name = "windows_i686_msvc"
+version = "0.42.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "84c12f65daa39dd2babe6e442988fc329d6243fdce47d7d2d155b8d874862246"
+
+[[package]]
+name = "windows_x86_64_gnu"
+version = "0.42.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bf7b1b21b5362cbc318f686150e5bcea75ecedc74dd157d874d754a2ca44b0ed"
+
+[[package]]
+name = "windows_x86_64_gnullvm"
+version = "0.42.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "09d525d2ba30eeb3297665bd434a54297e4170c7f1a44cad4ef58095b4cd2028"
+
+[[package]]
+name = "windows_x86_64_msvc"
+version = "0.42.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f40009d85759725a34da6d89a94e63d7bdc50a862acf0dbc7c8e488f1edcb6f5"
+
+[[package]]
+name = "yansi"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "09041cd90cf85f7f8b2df60c646f853b7f535ce68f85244eb6731cf89fa498ec"
@@ -7,25 +7,27 @@ license = "MIT/Apache-2.0"
 name = "hexyl"
 readme = "README.md"
 repository = "https://github.com/sharkdp/hexyl"
-version = "0.10.0"
+version = "0.11.0"
 edition = "2021"

 [dependencies]
-ansi_term = "0.12"
+anstyle = "0.2"
 anyhow = "1.0"
-atty = "0.2"
 const_format = "0.2"
+is-terminal = "0.4"
 libc = "0.2"
 thiserror = "1.0"
+terminal_size = "0.2"

 [dependencies.clap]
-version = "3"
+version = "4"
 default-features = false
-features = ["std", "suggestions", "color", "wrap_help", "cargo"]
+features = ["std", "suggestions", "color", "wrap_help", "cargo", "help", "usage", "error-context"]

 [dev-dependencies]
 assert_cmd = "2.0"
 predicates = "2.0"
+pretty_assertions = "1.3.0"

 [profile.release]
 lto = true
@@ -31,7 +31,7 @@ If you use an older version of Ubuntu, you can download
 the latest `.deb` package from the release page and install it via:

 ``` bash
-sudo dpkg -i hexyl_0.10.0_amd64.deb  # adapt version number and architecture
+sudo dpkg -i hexyl_0.11.0_amd64.deb  # adapt version number and architecture
 ```

 ### On Debian
@@ -44,6 +44,14 @@ sudo apt-get install hexyl
 If you run an older version of Debian, see above for instructions on how to
 manually install `hexyl`.

+### On Fedora
+
+If you run Fedora 35 or newer, you can install the [officially maintained Fedora package](https://packages.fedoraproject.org/pkgs/rust-hexyl/hexyl):
+
+```bash
+sudo dnf install hexyl
+```
+
 ### On Arch Linux

 You can install `hexyl` from [the official package repository](https://www.archlinux.org/packages/community/x86_64/hexyl/):
@@ -1,6 +1,6 @@
-% HEXYL(1) hexyl 0.10.0 | General Commands Manual
+% HEXYL(1) hexyl 0.11.0 | General Commands Manual
 %
-% 2022-03-23
+% 2022-12-05

 <!--
 This man page is written in Pandoc's Markdown.
@@ -121,6 +121,9 @@ Source repository:
 Print a given file:
 :   $ **hexyl small.png**

+Print and view a given file in the terminal pager:
+:   $ **hexyl big.png | less -r**
+
 Print the first 256 bytes of a given special file:
 :   $ **hexyl -n 256 /dev/urandom**

@@ -1,6 +1,6 @@
 use std::io;

-use hexyl::{BorderStyle, Printer};
+use hexyl::{BorderStyle, PrinterBuilder};

 fn main() {
    let input = vec![
@@ -11,19 +11,14 @@ fn main() {
    let stdout = io::stdout();
    let mut handle = stdout.lock();

-    let show_color = true;
-    let show_char_panel = true;
-    let show_position_panel = true;
-    let use_squeezing = false;
-    let border_style = BorderStyle::Unicode;
-
-    let mut printer = Printer::new(
-        &mut handle,
-        show_color,
-        show_char_panel,
-        show_position_panel,
-        border_style,
-        use_squeezing,
-    );
+    let mut printer = PrinterBuilder::new(&mut handle)
+        .show_color(true)
+        .show_char_panel(true)
+        .show_position_panel(true)
+        .with_border_style(BorderStyle::Unicode)
+        .enable_squeezing(false)
+        .num_panels(2)
+        .num_group_bytes(1)
+        .build();
    printer.print_all(&input[..]).unwrap();
 }
@@ -3,26 +3,28 @@ extern crate clap;

 use std::convert::TryFrom;
 use std::fs::File;
-use std::io::{self, prelude::*, SeekFrom};
-use std::num::NonZeroI64;
+use std::io::{self, prelude::*, BufWriter, SeekFrom};
+use std::num::{NonZeroI64, NonZeroU64, NonZeroU8};

-use clap::{crate_name, crate_version, AppSettings, Arg, ColorChoice, Command};
+use clap::builder::ArgPredicate;
+use clap::{crate_name, crate_version, Arg, ArgAction, ColorChoice, Command};

-use atty::Stream;
+use is_terminal::IsTerminal;

-use anyhow::{anyhow, Context, Error as AnyhowError};
+use anyhow::{anyhow, Context, Result};

 use const_format::formatcp;

 use thiserror::Error as ThisError;

-use hexyl::{BorderStyle, Input, Printer};
+use terminal_size::terminal_size;
+
+use hexyl::{Base, BorderStyle, Input, PrinterBuilder};

 const DEFAULT_BLOCK_SIZE: i64 = 512;

-fn run() -> Result<(), AnyhowError> {
+fn run() -> Result<()> {
    let command = Command::new(crate_name!())
-        .setting(AppSettings::DeriveDisplayOrder)
        .color(ColorChoice::Auto)
        .max_term_width(90)
        .version(crate_version!())
@@ -35,7 +37,7 @@ fn run() -> Result<(), AnyhowError> {
            Arg::new("length")
                .short('n')
                .long("length")
-                .takes_value(true)
+                .num_args(1)
                .value_name("N")
                .help(
                    "Only read N bytes from the input. The N argument can also include a \
@@ -49,7 +51,7 @@ fn run() -> Result<(), AnyhowError> {
            Arg::new("bytes")
                .short('c')
                .long("bytes")
-                .takes_value(true)
+                .num_args(1)
                .value_name("N")
                .conflicts_with("length")
                .help("An alias for -n/--length"),
@@ -57,9 +59,9 @@ fn run() -> Result<(), AnyhowError> {
        .arg(
            Arg::new("count")
                .short('l')
-                .takes_value(true)
+                .num_args(1)
                .value_name("N")
-                .conflicts_with_all(&["length", "bytes"])
+                .conflicts_with_all(["length", "bytes"])
                .hide(true)
                .help("Yet another alias for -n/--length"),
        )
@@ -67,7 +69,7 @@ fn run() -> Result<(), AnyhowError> {
            Arg::new("skip")
                .short('s')
                .long("skip")
-                .takes_value(true)
+                .num_args(1)
                .value_name("N")
                .help(
                    "Skip the first N bytes of the input. The N argument can also include \
@@ -78,7 +80,7 @@ fn run() -> Result<(), AnyhowError> {
        .arg(
            Arg::new("block_size")
                .long("block-size")
-                .takes_value(true)
+                .num_args(1)
                .value_name("SIZE")
                .help(formatcp!(
                    "Sets the size of the `block` unit to SIZE (default is {}).\n\
@@ -90,6 +92,7 @@ fn run() -> Result<(), AnyhowError> {
            Arg::new("nosqueezing")
                .short('v')
                .long("no-squeezing")
+                .action(ArgAction::SetFalse)
                .help(
                    "Displays all input data. Otherwise any number of groups of output \
                     lines which would be identical to the preceding group of lines, are \
@@ -99,49 +102,51 @@ fn run() -> Result<(), AnyhowError> {
        .arg(
            Arg::new("color")
                .long("color")
-                .takes_value(true)
+                .num_args(1)
                .value_name("WHEN")
-                .possible_values(&["always", "auto", "never"])
-                .default_value_if("plain", None, Some("never"))
+                .value_parser(["always", "auto", "never"])
+                .default_value_if("plain", ArgPredicate::IsPresent, Some("never"))
                .default_value("always")
                .help(
                    "When to use colors. The auto-mode only displays colors if the output \
                     goes to an interactive terminal",
                ),
        )
-        .arg(Arg::new("plain").short('p').long("plain").help(
-            "Display output with --no-characters, --no-position, --border=none, and --color=never.",
-        ))
        .arg(
            Arg::new("border")
                .long("border")
-                .takes_value(true)
+                .num_args(1)
                .value_name("STYLE")
-                .possible_values(&["unicode", "ascii", "none"])
-                .default_value_if("plain", None, Some("none"))
+                .value_parser(["unicode", "ascii", "none"])
+                .default_value_if("plain", ArgPredicate::IsPresent, Some("none"))
                .default_value("unicode")
                .help(
                    "Whether to draw a border with Unicode characters, ASCII characters, \
                    or none at all",
                ),
        )
+        .arg(Arg::new("plain").short('p').long("plain").action(ArgAction::SetTrue).help(
+            "Display output with --no-characters, --no-position, --border=none, and --color=never.",
+        ))
        .arg(
            Arg::new("no_chars")
                .short('C')
                .long("no-characters")
+                .action(ArgAction::SetFalse)
                .help("Whether to display the character panel on the right."),
        )
        .arg(
            Arg::new("no_position")
                .short('P')
                .long("no-position")
+                .action(ArgAction::SetFalse)
                .help("Whether to display the position panel on the left."),
        )
        .arg(
            Arg::new("display_offset")
                .short('o')
                .long("display-offset")
-                .takes_value(true)
+                .num_args(1)
                .value_name("N")
                .help(
                    "Add N bytes to the displayed file position. The N argument can also \
@@ -149,19 +154,67 @@ fn run() -> Result<(), AnyhowError> {
                    A negative value is valid and calculates an offset relative to the \
                    end of the file.",
                ),
+        )
+        .arg(
+            Arg::new("panels")
+                .long("panels")
+                .num_args(1)
+                .value_name("N")
+                .help(
+                    "Sets the number of hex data panels to be displayed. \
+                    `--panels=auto` will display the maximum number of hex data panels \
+                    based on the current terminal width",
+                ),
+        )
+        .arg(
+            Arg::new("group_bytes")
+                .short('g')
+                .long("group-bytes")
+                .num_args(1)
+                .value_name("N")
+                .help(
+                    "Sets the number of octets per group to be displayed. \
+                    The possible options are 1, 2, 4, 8. The default is 1",
+                ),
+        )
+        .arg(
+            Arg::new("base")
+                .short('b')
+                .long("base")
+                .num_args(1)
+                .value_name("B")
+                .help(
+                    "Sets the base used for the bytes. The possible options are \
+                    binary, octal, decimal, and hexadecimal. The default base \
+                    is hexadecimal."
+                )
+        )
+        .arg(
+            Arg::new("terminal_width")
+                .long("terminal-width")
+                .num_args(1)
+                .value_name("N")
+                .conflicts_with("panels")
+                .help(
+                    "Sets the number of terminal columns to be displayed.\nSince the terminal \
+                    width may not be an evenly divisible by the width per hex data column, this \
+                    will use the greatest number of hex data panels that can fit in the requested \
+                    width but still leave some space to the right.\nCannot be used with other \
+                    width-setting options.",
+                ),
        );

    let matches = command.get_matches();

    let stdin = io::stdin();

-    let mut reader = match matches.value_of("FILE") {
+    let mut reader = match matches.get_one::<String>("FILE") {
        Some(filename) => Input::File(File::open(filename)?),
        None => Input::Stdin(stdin.lock()),
    };

    let block_size = matches
-        .value_of("block_size")
+        .get_one::<String>("block_size")
        .map(|bs| {
            if let Some(hex_number) = try_parse_as_hex_number(bs) {
                return hex_number.map_err(|e| anyhow!(e)).and_then(|x| {
@@ -186,7 +239,7 @@ fn run() -> Result<(), AnyhowError> {
        .unwrap_or_else(|| PositiveI64::new(DEFAULT_BLOCK_SIZE).unwrap());

    let skip_arg = matches
-        .value_of("skip")
+        .get_one::<String>("skip")
        .map(|s| {
            parse_byte_offset(s, block_size).context(anyhow!(
                "failed to parse `--skip` arg {:?} as byte count",
@@ -215,16 +268,16 @@ fn run() -> Result<(), AnyhowError> {
        0
    };

-    let parse_byte_count = |s| -> Result<u64, AnyhowError> {
+    let parse_byte_count = |s| -> Result<u64> {
        Ok(parse_byte_offset(s, block_size)?
            .assume_forward_offset_from_start()?
            .into())
    };

    let mut reader = if let Some(length) = matches
-        .value_of("length")
-        .or_else(|| matches.value_of("bytes"))
-        .or_else(|| matches.value_of("count"))
+        .get_one::<String>("length")
+        .or_else(|| matches.get_one::<String>("bytes"))
+        .or_else(|| matches.get_one::<String>("count"))
        .map(|s| {
            parse_byte_count(s).context(anyhow!(
                "failed to parse `--length` arg {:?} as byte count",
@@ -238,26 +291,28 @@ fn run() -> Result<(), AnyhowError> {
        reader.into_inner()
    };

-    let show_color = match matches.value_of("color") {
+    let show_color = match matches.get_one::<String>("color").map(String::as_ref) {
        Some("never") => false,
-        Some("auto") => atty::is(Stream::Stdout),
+        Some("auto") => std::io::stdout().is_terminal(),
        _ => true,
    };

-    let border_style = match matches.value_of("border") {
+    let border_style = match matches.get_one::<String>("border").map(String::as_ref) {
        Some("unicode") => BorderStyle::Unicode,
        Some("ascii") => BorderStyle::Ascii,
        _ => BorderStyle::None,
    };

-    let squeeze = !matches.is_present("nosqueezing");
+    let &squeeze = matches.get_one::<bool>("nosqueezing").unwrap_or(&true);

-    let show_char_panel = !matches.is_present("no_chars") && !matches.is_present("plain");
+    let show_char_panel = *matches.get_one::<bool>("no_chars").unwrap_or(&true)
+        && !matches.get_one::<bool>("plain").unwrap_or(&false);

-    let show_position_panel = !matches.is_present("no_position") && !matches.is_present("plain");
+    let show_position_panel = *matches.get_one::<bool>("no_position").unwrap_or(&true)
+        && !matches.get_one::<bool>("plain").unwrap_or(&false);

    let display_offset: u64 = matches
-        .value_of("display_offset")
+        .get_one::<String>("display_offset")
        .map(|s| {
            parse_byte_count(s).context(anyhow!(
                "failed to parse `--display-offset` arg {:?} as byte count",
@@ -267,17 +322,118 @@ fn run() -> Result<(), AnyhowError> {
        .transpose()?
        .unwrap_or(0);

-    let stdout = io::stdout();
-    let mut stdout_lock = stdout.lock();
+    let max_panels_fn = |terminal_width: u64, base_digits: u64, group_bytes: u64| {
+        let offset = if show_position_panel { 10 } else { 1 };
+        let col_width = if show_char_panel {
+            ((8 / group_bytes) * (base_digits * group_bytes + 1)) + 2 + 8
+        } else {
+            ((8 / group_bytes) * (base_digits * group_bytes + 1)) + 2
+        };
+        if (terminal_width - offset) / col_width < 1 {
+            1
+        } else {
+            (terminal_width - offset) / col_width
+        }
+    };

-    let mut printer = Printer::new(
-        &mut stdout_lock,
-        show_color,
-        show_char_panel,
-        show_position_panel,
-        border_style,
-        squeeze,
-    );
+    let base = if let Some(base) = matches.get_one::<String>("base")
+    .map(|s| {
+        if let Ok(base_num) = s.parse::<u8>() {
+            match base_num {
+                2 => Ok(Base::Binary),
+                8 => Ok(Base::Octal),
+                10 => Ok(Base::Decimal),
+                16 => Ok(Base::Hexadecimal),
+                _ => Err(anyhow!("The number provided is not a valid base. Valid bases are 2, 8, 10, and 16.")),
+            }
+        } else {
+            match s.as_str() {
+                "b" | "bin" | "binary" => Ok(Base::Binary),
+                "o" | "oct" | "octal" => Ok(Base::Octal),
+                "d" | "dec" | "decimal" => Ok(Base::Decimal),
+                "x" | "hex" | "hexadecimal" => Ok(Base::Hexadecimal),
+                _ => Err(anyhow!("The base provided is not valid. Valid bases are \"b\", \"o\", \"d\", and \"x\"."))
+            }
+        }
+    }).transpose()? {
+        base
+    } else {
+        Base::Hexadecimal
+    };
+
+    let base_digits = match base {
+        Base::Binary => 8,
+        Base::Octal => 3,
+        Base::Decimal => 3,
+        Base::Hexadecimal => 2,
+    };
+
+    let group_bytes = if let Some(group_bytes) = matches
+        .get_one::<String>("group_bytes")
+        .map(|s| {
+            s.parse::<NonZeroU8>().map(u8::from).context(anyhow!(
+                "failed to parse `--group-bytes`/`-g` arg {:?} as unsigned nonzero integer",
+                s
+            ))
+        })
+        .transpose()?
+    {
+        if (group_bytes <= 8) && ((group_bytes & (group_bytes - 1)) == 0) {
+            group_bytes
+        } else {
+            return Err(anyhow!(
+                "Possible options for the `--group-bytes`/`-g` option are 1, 2, 4 or 8. "
+            ));
+        }
+    } else {
+        1
+    };
+
+    let panels = if matches.get_one::<String>("panels").map(String::as_ref) == Some("auto") {
+        max_panels_fn(
+            terminal_size().ok_or_else(|| anyhow!("not a TTY"))?.0 .0 as u64,
+            base_digits,
+            group_bytes.into(),
+        )
+    } else if let Some(panels) = matches
+        .get_one::<String>("panels")
+        .map(|s| {
+            s.parse::<NonZeroU64>().map(u64::from).context(anyhow!(
+                "failed to parse `--panels` arg {:?} as unsigned nonzero integer",
+                s
+            ))
+        })
+        .transpose()?
+    {
+        panels
+    } else if let Some(terminal_width) = matches
+        .get_one::<String>("terminal_width")
+        .map(|s| {
+            s.parse::<NonZeroU64>().map(u64::from).context(anyhow!(
+                "failed to parse `--terminal-width` arg {:?} as unsigned nonzero integer",
+                s
+            ))
+        })
+        .transpose()?
+    {
+        max_panels_fn(terminal_width, base_digits, group_bytes.into())
+    } else {
+        2
+    };
+
+    let stdout = io::stdout();
+    let mut stdout_lock = BufWriter::new(stdout.lock());
+
+    let mut printer = PrinterBuilder::new(&mut stdout_lock)
+        .show_color(show_color)
+        .show_char_panel(show_char_panel)
+        .show_position_panel(show_position_panel)
+        .with_border_style(border_style)
+        .enable_squeezing(squeeze)
+        .num_panels(panels)
+        .num_group_bytes(group_bytes)
+        .with_base(base)
+        .build();
    printer.display_offset(skip_offset + display_offset);
    printer.print_all(&mut reader).map_err(|e| anyhow!(e))?;

@@ -285,13 +441,14 @@ fn run() -> Result<(), AnyhowError> {
 }

 fn main() {
-    // Enable ANSI support for Windows
-    #[cfg(windows)]
-    let _ = ansi_term::enable_ansi_support();
-
    let result = run();

    if let Err(err) = result {
+        if let Some(io_error) = err.downcast_ref::<io::Error>() {
+            if io_error.kind() == ::std::io::ErrorKind::BrokenPipe {
+                std::process::exit(0);
+            }
+        }
        eprintln!("Error: {:?}", err);
        std::process::exit(1);
    }
@@ -1,407 +0,0 @@
-#[derive(Debug, PartialEq)]
-enum SqueezeState {
-    /// not enabled
-    Disabled,
-    /// Will be set from all states if equal condition can't be hold up.
-    /// Set if previous byte is not equal the current processed byte.
-    NoSqueeze,
-    /// Valid for a whole line to identify if it is candidate for squeezing
-    Probe,
-    /// Squeeze line parsing is active, but EOL is not reached yet
-    SqueezeActive,
-    /// Squeeze line, EOL is reached, will influence the action
-    Squeeze,
-    /// same as Squeeze, however this is only for the first line after
-    /// the squeeze candidate has been set.
-    SqueezeFirstLine,
-    /// same as SqueezeActive, however this is only for the first line after
-    /// the squeeze candidate has been set.
-    SqueezeActiveFirstLine,
-}
-
-pub struct Squeezer {
-    state: SqueezeState,
-    byte: u8,
-}
-
-#[derive(Debug, PartialEq)]
-pub enum SqueezeAction {
-    Ignore,
-    Print,
-    Delete,
-}
-
-/// line size
-const LSIZE: u64 = 16;
-
-impl Squeezer {
-    pub fn new(enabled: bool) -> Squeezer {
-        Squeezer {
-            state: if enabled {
-                SqueezeState::Probe
-            } else {
-                SqueezeState::Disabled
-            },
-            byte: 0,
-        }
-    }
-
-    pub fn process(&mut self, b: u8, i: u64) {
-        use self::SqueezeState::*;
-        if self.state == Disabled {
-            return;
-        }
-        let eq = b == self.byte;
-
-        if i % LSIZE == 0 {
-            if !eq {
-                self.state = Probe;
-            } else {
-                self.state = match self.state {
-                    NoSqueeze => Probe,
-                    Probe => SqueezeActiveFirstLine,
-                    SqueezeActiveFirstLine => SqueezeFirstLine,
-                    SqueezeFirstLine => SqueezeActive,
-                    SqueezeActive => Squeeze,
-                    Squeeze => SqueezeActive,
-                    Disabled => Disabled,
-                };
-            }
-        } else if !eq {
-            if i % LSIZE == 1 {
-                self.state = Probe;
-            } else if i % LSIZE != 1 {
-                self.state = NoSqueeze;
-            }
-        }
-
-        self.byte = b;
-    }
-
-    pub fn active(&self) -> bool {
-        use self::SqueezeState::*;
-        matches!(
-            self.state,
-            Squeeze | SqueezeActive | SqueezeFirstLine | SqueezeActiveFirstLine
-        )
-    }
-
-    pub fn action(&self) -> SqueezeAction {
-        match self.state {
-            SqueezeState::SqueezeFirstLine => SqueezeAction::Print,
-            SqueezeState::Squeeze => SqueezeAction::Delete,
-            _ => SqueezeAction::Ignore,
-        }
-    }
-
-    pub fn advance(&mut self) {
-        match self.state {
-            SqueezeState::SqueezeFirstLine => {
-                self.state = SqueezeState::SqueezeActive;
-            }
-            SqueezeState::Squeeze => {
-                self.state = SqueezeState::SqueezeActive;
-            }
-            _ => {}
-        }
-    }
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    const LSIZE_USIZE: usize = LSIZE as usize;
-
-    #[test]
-    fn three_same_lines() {
-        const LINES: usize = 3;
-        let v = vec![0u8; LINES * LSIZE_USIZE];
-        let mut s = Squeezer::new(true);
-        // just initialized
-        assert_eq!(s.action(), SqueezeAction::Ignore);
-        s.advance();
-
-        let exp = vec![
-            SqueezeAction::Ignore, // first line, print as is
-            SqueezeAction::Print,  // print squeeze symbol
-            SqueezeAction::Delete, // delete reoccurring line
-        ];
-
-        let mut idx = 1;
-        for (line, z) in v.chunks(LSIZE_USIZE).enumerate() {
-            for i in z {
-                s.process(*i, idx);
-                idx += 1;
-            }
-            let action = s.action();
-            s.advance();
-            assert_eq!(action, exp[line]);
-        }
-    }
-
-    #[test]
-    fn incomplete_while_squeeze() {
-        // fourth line only has 12 bytes and should be printed
-        let v = vec![0u8; 3 * LSIZE_USIZE + 12];
-        let mut s = Squeezer::new(true);
-        // just initialized
-        assert_eq!(s.action(), SqueezeAction::Ignore);
-        s.advance();
-
-        let exp = vec![
-            SqueezeAction::Ignore, // first line, print as is
-            SqueezeAction::Print,  // print squeeze symbol
-            SqueezeAction::Delete, // delete reoccurring line
-            SqueezeAction::Ignore, // last line only 12 bytes, print it
-        ];
-
-        let mut idx = 1;
-        for (line, z) in v.chunks(LSIZE_USIZE).enumerate() {
-            for i in z {
-                s.process(*i, idx);
-                idx += 1;
-            }
-            assert_eq!(s.action(), exp[line]);
-            s.advance();
-        }
-    }
-
-    #[test]
-    /// all three lines are different, print all
-    fn three_different_lines() {
-        let mut v: Vec<u8> = vec![];
-        v.extend(vec![0u8; 16]);
-        v.extend(vec![1u8; 16]);
-        v.extend(vec![2u8; 16]);
-
-        let mut s = Squeezer::new(true);
-        // just initialized
-        assert_eq!(s.action(), SqueezeAction::Ignore);
-        s.advance();
-
-        let exp = vec![
-            SqueezeAction::Ignore, // first line, print as is
-            SqueezeAction::Ignore, // different
-            SqueezeAction::Ignore, // different
-        ];
-
-        let mut idx = 1;
-        for (line, z) in v.chunks(LSIZE_USIZE).enumerate() {
-            for i in z {
-                s.process(*i, idx);
-                idx += 1;
-            }
-            let action = s.action();
-            assert_eq!(action, exp[line]);
-            s.advance();
-        }
-    }
-
-    #[test]
-    /// first two lines same, hence squeeze symbol, third line diff, hence
-    /// print
-    fn one_squeeze_no_delete() {
-        const LINES: usize = 3;
-        let mut v = vec![0u8; (LINES - 1) * LSIZE_USIZE];
-        v.extend(vec![1u8; 16]);
-
-        let mut s = Squeezer::new(true);
-        // just initialized
-        assert_eq!(s.action(), SqueezeAction::Ignore);
-        s.advance();
-
-        let exp = vec![
-            SqueezeAction::Ignore, // first line, print as is
-            SqueezeAction::Print,  // print squeeze symbol
-            SqueezeAction::Ignore, // different lines, print again
-        ];
-
-        let mut idx = 1;
-        for (line, z) in v.chunks(LSIZE_USIZE).enumerate() {
-            for i in z {
-                s.process(*i, idx);
-                idx += 1;
-            }
-            let action = s.action();
-            s.advance();
-            assert_eq!(action, exp[line]);
-        }
-    }
-
-    #[test]
-    /// First line all eq, 2nd half eq with first line, then change
-    fn second_line_different() {
-        const LINES: usize = 2;
-        let mut v = vec![0u8; (LINES - 1) * LSIZE_USIZE];
-        v.extend(vec![0u8; 8]);
-        v.extend(vec![1u8; 8]);
-
-        let mut s = Squeezer::new(true);
-        // just initialized
-        assert_eq!(s.action(), SqueezeAction::Ignore);
-        s.advance();
-
-        let exp = vec![
-            SqueezeAction::Ignore, // first line, print as is
-            SqueezeAction::Ignore, // print squeeze symbol
-        ];
-
-        let mut idx = 1;
-        for (line, z) in v.chunks(LSIZE_USIZE).enumerate() {
-            for i in z {
-                s.process(*i, idx);
-                idx += 1;
-            }
-            let action = s.action();
-            s.advance();
-            assert_eq!(action, exp[line]);
-        }
-    }
-
-    #[test]
-    /// all three lines never become squeeze candidate (diff within line)
-    fn never_squeeze_candidate() {
-        let mut v = vec![];
-        v.extend(vec![0u8; 8]);
-        v.extend(vec![1u8; 8]);
-        v.extend(vec![0u8; 8]);
-        v.extend(vec![1u8; 8]);
-        v.extend(vec![0u8; 8]);
-        v.extend(vec![1u8; 8]);
-
-        let mut s = Squeezer::new(true);
-        // just initialized
-        assert_eq!(s.action(), SqueezeAction::Ignore);
-        s.advance();
-
-        let exp = vec![
-            SqueezeAction::Ignore, // first line, print as is
-            SqueezeAction::Ignore, // print squeeze symbol
-            SqueezeAction::Ignore, // print squeeze symbol
-        ];
-
-        let mut idx = 1;
-        for (line, z) in v.chunks(LSIZE_USIZE).enumerate() {
-            for i in z {
-                s.process(*i, idx);
-                idx += 1;
-            }
-            let action = s.action();
-            s.advance();
-            assert_eq!(action, exp[line]);
-        }
-    }
-
-    #[test]
-    fn mix_everything() {
-        let mut v = vec![];
-        v.extend(vec![10u8; 16]); // print
-        v.extend(vec![20u8; 16]); // print
-        v.extend(vec![0u8; 16]); // print
-        v.extend(vec![0u8; 16]); // *
-        v.extend(vec![10u8; 16]); // print
-        v.extend(vec![20u8; 16]); // print
-        v.extend(vec![0u8; 16]); // print
-        v.extend(vec![0u8; 16]); // *
-        v.extend(vec![0u8; 16]); // delete
-        v.extend(vec![0u8; 16]); // delete*
-        v.extend(vec![20u8; 16]); // print
-        v.extend(vec![0u8; 12]); // print, only 12 bytes
-
-        let mut s = Squeezer::new(true);
-        // just initialized
-        assert_eq!(s.action(), SqueezeAction::Ignore);
-        s.advance();
-
-        let exp = vec![
-            SqueezeAction::Ignore,
-            SqueezeAction::Ignore,
-            SqueezeAction::Ignore,
-            SqueezeAction::Print,
-            SqueezeAction::Ignore,
-            SqueezeAction::Ignore,
-            SqueezeAction::Ignore,
-            SqueezeAction::Print,
-            SqueezeAction::Delete,
-            SqueezeAction::Delete,
-            SqueezeAction::Ignore,
-            SqueezeAction::Ignore,
-        ];
-
-        let mut idx = 1;
-        for (line, z) in v.chunks(LSIZE_USIZE).enumerate() {
-            for i in z {
-                s.process(*i, idx);
-                idx += 1;
-            }
-            let action = s.action();
-            s.advance();
-            assert_eq!(action, exp[line]);
-        }
-    }
-
-    #[test]
-    fn last_char_diff() {
-        // see issue #62
-        let mut v = vec![];
-        v.extend(vec![20u8; 16]);
-        v.extend(vec![20u8; 15]);
-        v.push(61);
-        v.extend(vec![20u8; 16]);
-        v.extend(vec![20u8; 16]);
-
-        let mut s = Squeezer::new(true);
-        // just initialized
-        assert_eq!(s.action(), SqueezeAction::Ignore);
-        s.advance();
-
-        let exp = vec![
-            SqueezeAction::Ignore, // print as is
-            SqueezeAction::Ignore, // print as is
-            SqueezeAction::Ignore, // print as is
-            SqueezeAction::Print,  // print '*' char
-        ];
-
-        let mut idx = 1;
-        for (line, z) in v.chunks(LSIZE_USIZE).enumerate() {
-            for i in z {
-                s.process(*i, idx);
-                idx += 1;
-            }
-            assert_eq!(s.action(), exp[line]);
-            s.advance();
-        }
-    }
-
-    #[test]
-    fn first_char_diff() {
-        // see issue #62
-        let mut v = vec![];
-        v.extend(vec![20u8; 16]);
-        v.push(61);
-        v.extend(vec![20u8; 15]);
-        v.extend(vec![20u8; 16]);
-
-        let mut s = Squeezer::new(true);
-        // just initialized
-        assert_eq!(s.action(), SqueezeAction::Ignore);
-        s.advance();
-
-        let exp = vec![
-            SqueezeAction::Ignore, // print as is
-            SqueezeAction::Ignore, // print as is
-            SqueezeAction::Ignore, // print as is
-        ];
-
-        let mut idx = 1;
-        for (line, z) in v.chunks(LSIZE_USIZE).enumerate() {
-            for i in z {
-                s.process(*i, idx);
-                idx += 1;
-            }
-            assert_eq!(s.action(), exp[line]);
-            s.advance();
-        }
-    }
-}
@@ -5,6 +5,26 @@ fn hexyl() -> Command {
    cmd.current_dir("tests/examples");
    cmd
 }
+trait PrettyAssert<S>
+where
+    S: AsRef<str>,
+{
+    fn pretty_stdout(self, other: S);
+}
+
+// https://github.com/assert-rs/assert_cmd/issues/121#issuecomment-849937376
+//
+impl<S> PrettyAssert<S> for assert_cmd::assert::Assert
+where
+    S: AsRef<str>,
+{
+    fn pretty_stdout(self, other: S) {
+        println!("{}", other.as_ref().len());
+        let self_str = String::from_utf8(self.get_output().stdout.clone()).unwrap();
+        println!("{}", self_str.len());
+        pretty_assertions::assert_eq!(self_str, other.as_ref());
+    }
+}

 mod basic {
    use super::hexyl;
@@ -51,7 +71,7 @@ mod basic {
        .success()
        .stdout(
            "┌────────┬─────────────────────────┬─────────────────────────┬────────┬────────┐\n\
-             │        │ No content to print     │                         │        │        │\n\
+             │        │ No content              │                         │        │        │\n\
             └────────┴─────────────────────────┴─────────────────────────┴────────┴────────┘\n",
        );
    }
@@ -70,8 +90,8 @@ mod length {
        .success()
        .stdout(
            "┌────────┬─────────────────────────┬─────────────────────────┬────────┬────────┐\n\
-             │00000000│ 7f 45 4c 46 02 01 01 00 ┊ 00 00 00 00 00 00 00 00 │•ELF•••0┊00000000│\n\
-             │00000010│ 02 00 3e 00 01 00 00 00 ┊ 00 10 40 00 00 00 00 00 │•0>0•000┊0•@00000│\n\
+             │00000000│ 7f 45 4c 46 02 01 01 00 ┊ 00 00 00 00 00 00 00 00 │•ELF•••⋄┊⋄⋄⋄⋄⋄⋄⋄⋄│\n\
+             │00000010│ 02 00 3e 00 01 00 00 00 ┊ 00 10 40 00 00 00 00 00 │•⋄>⋄•⋄⋄⋄┊⋄•@⋄⋄⋄⋄⋄│\n\
             └────────┴─────────────────────────┴─────────────────────────┴────────┴────────┘\n",
        );
    }
@@ -140,7 +160,7 @@ mod skip {
        .success()
        .stdout(
            "┌────────┬─────────────────────────┬─────────────────────────┬────────┬────────┐\n\
-             │        │ No content to print     │                         │        │        │\n\
+             │        │ No content              │                         │        │        │\n\
             └────────┴─────────────────────────┴─────────────────────────┴────────┴────────┘\n",
        );
    }
@@ -203,7 +223,7 @@ mod display_offset {
        .success()
        .stdout(
            "┌────────┬─────────────────────────┬─────────────────────────┬────────┬────────┐\n\
-             │00000030│ 02 00 3e 00 01 00 00 00 ┊ 00 10 40 00 00 00 00 00 │•0>0•000┊0•@00000│\n\
+             │00000030│ 02 00 3e 00 01 00 00 00 ┊ 00 10 40 00 00 00 00 00 │•⋄>⋄•⋄⋄⋄┊⋄•@⋄⋄⋄⋄⋄│\n\
             └────────┴─────────────────────────┴─────────────────────────┴────────┴────────┘\n",
        );
    }
@@ -271,3 +291,281 @@ mod display_settings {
            );
    }
 }
+
+mod group {
+    use super::hexyl;
+    use super::PrettyAssert;
+
+    #[test]
+    fn group_2_bytes() {
+        hexyl()
+            .arg("ascii")
+            .arg("--color=never")
+            .arg("--group-bytes=2")
+            .assert()
+            .success()
+            .stdout(
+                "┌────────┬─────────────────────┬─────────────────────┬────────┬────────┐\n\
+                 │00000000│ 3031 3233 3435 3637 ┊ 3839 6162 6364 650a │01234567┊89abcde_│\n\
+                 └────────┴─────────────────────┴─────────────────────┴────────┴────────┘\n",
+            );
+    }
+
+    #[test]
+    fn group_4_bytes() {
+        hexyl()
+            .arg("ascii")
+            .arg("--color=never")
+            .arg("--group-bytes=4")
+            .assert()
+            .success()
+            .stdout(
+                "┌────────┬───────────────────┬───────────────────┬────────┬────────┐\n\
+                 │00000000│ 30313233 34353637 ┊ 38396162 6364650a │01234567┊89abcde_│\n\
+                 └────────┴───────────────────┴───────────────────┴────────┴────────┘\n",
+            );
+    }
+
+    #[test]
+    fn group_8_bytes() {
+        hexyl()
+            .arg("ascii")
+            .arg("--color=never")
+            .arg("--group-bytes=8")
+            .assert()
+            .success()
+            .stdout(
+                "┌────────┬──────────────────┬──────────────────┬────────┬────────┐\n\
+                 │00000000│ 3031323334353637 ┊ 383961626364650a │01234567┊89abcde_│\n\
+                 └────────┴──────────────────┴──────────────────┴────────┴────────┘\n",
+            );
+    }
+
+    #[test]
+    fn group_bytes_plain() {
+        hexyl()
+            .arg("ascii")
+            .arg("--color=never")
+            .arg("--plain")
+            .arg("--group-bytes=2")
+            .assert()
+            .success()
+            .stdout("  3031 3233 3435 3637   3839 6162 6364 650a  \n");
+    }
+
+    #[test]
+    fn group_bytes_fill_space() {
+        hexyl()
+            .arg("--color=never")
+            .arg("--group-bytes=2")
+            .write_stdin("abc")
+            .assert()
+            .success()
+            .stdout(
+                "┌────────┬─────────────────────┬─────────────────────┬────────┬────────┐\n\
+                 │00000000│ 6162 63             ┊                     │abc     ┊        │\n\
+                 └────────┴─────────────────────┴─────────────────────┴────────┴────────┘\n",
+            );
+    }
+
+    #[test]
+    fn group_bytes_invalid() {
+        hexyl()
+            .arg("ascii")
+            .arg("--color=never")
+            .arg("--plain")
+            .arg("--group-bytes=3")
+            .assert()
+            .failure();
+    }
+    #[test]
+    fn squeeze_no_chars() {
+        hexyl()
+            .arg("hello_world_elf64")
+            .arg("--color=never")
+            .arg("--skip=1024")
+            .arg("--length=4096")
+            .arg("--no-characters")
+            .assert()
+            .success()
+            .pretty_stdout(
+                "\
+┌────────┬─────────────────────────┬─────────────────────────┐
+│00000400│ 00 00 00 00 00 00 00 00 ┊ 00 00 00 00 00 00 00 00 │
+│*       │                         ┊                         │
+│00001000│ ba 0e 00 00 00 b9 00 20 ┊ 40 00 bb 01 00 00 00 b8 │
+│00001010│ 04 00 00 00 cd 80 b8 01 ┊ 00 00 00 cd 80 00 00 00 │
+│00001020│ 00 00 00 00 00 00 00 00 ┊ 00 00 00 00 00 00 00 00 │
+│*       │                         ┊                         │
+│00001400│                         ┊                         │
+└────────┴─────────────────────────┴─────────────────────────┘
+",
+            );
+    }
+    #[test]
+    fn squeeze_no_chars_one_panel() {
+        hexyl()
+            .arg("hello_world_elf64")
+            .arg("--color=never")
+            .arg("--skip=1024")
+            .arg("--length=4096")
+            .arg("--no-characters")
+            .arg("--panels=1")
+            .assert()
+            .success()
+            .pretty_stdout(
+                "\
+┌────────┬─────────────────────────┐
+│00000400│ 00 00 00 00 00 00 00 00 │
+│*       │                         │
+│00001000│ ba 0e 00 00 00 b9 00 20 │
+│00001008│ 40 00 bb 01 00 00 00 b8 │
+│00001010│ 04 00 00 00 cd 80 b8 01 │
+│00001018│ 00 00 00 cd 80 00 00 00 │
+│00001020│ 00 00 00 00 00 00 00 00 │
+│*       │                         │
+│00001400│                         │
+└────────┴─────────────────────────┘
+",
+            );
+    }
+    #[test]
+    fn squeeze_no_position() {
+        hexyl()
+            .arg("hello_world_elf64")
+            .arg("--color=never")
+            .arg("--skip=1024")
+            .arg("--length=4096")
+            .arg("--no-position")
+            .assert()
+            .success()
+            .pretty_stdout(
+                "\
+┌─────────────────────────┬─────────────────────────┬────────┬────────┐
+│ 00 00 00 00 00 00 00 00 ┊ 00 00 00 00 00 00 00 00 │⋄⋄⋄⋄⋄⋄⋄⋄┊⋄⋄⋄⋄⋄⋄⋄⋄│
+│*                        ┊                         │        ┊        │
+│ ba 0e 00 00 00 b9 00 20 ┊ 40 00 bb 01 00 00 00 b8 │×•⋄⋄⋄×⋄ ┊@⋄×•⋄⋄⋄×│
+│ 04 00 00 00 cd 80 b8 01 ┊ 00 00 00 cd 80 00 00 00 │•⋄⋄⋄×××•┊⋄⋄⋄××⋄⋄⋄│
+│ 00 00 00 00 00 00 00 00 ┊ 00 00 00 00 00 00 00 00 │⋄⋄⋄⋄⋄⋄⋄⋄┊⋄⋄⋄⋄⋄⋄⋄⋄│
+│*                        ┊                         │        ┊        │
+│*                        ┊                         │        ┊        │
+└─────────────────────────┴─────────────────────────┴────────┴────────┘
+",
+            );
+    }
+    #[test]
+    fn squeeze_no_position_one_panel() {
+        hexyl()
+            .arg("hello_world_elf64")
+            .arg("--color=never")
+            .arg("--skip=1024")
+            .arg("--length=4096")
+            .arg("--no-position")
+            .arg("--panels=1")
+            .assert()
+            .success()
+            .pretty_stdout(
+                "\
+┌─────────────────────────┬────────┐
+│ 00 00 00 00 00 00 00 00 │⋄⋄⋄⋄⋄⋄⋄⋄│
+│*                        │        │
+│ ba 0e 00 00 00 b9 00 20 │×•⋄⋄⋄×⋄ │
+│ 40 00 bb 01 00 00 00 b8 │@⋄×•⋄⋄⋄×│
+│ 04 00 00 00 cd 80 b8 01 │•⋄⋄⋄×××•│
+│ 00 00 00 cd 80 00 00 00 │⋄⋄⋄××⋄⋄⋄│
+│ 00 00 00 00 00 00 00 00 │⋄⋄⋄⋄⋄⋄⋄⋄│
+│*                        │        │
+│*                        │        │
+└─────────────────────────┴────────┘
+",
+            );
+    }
+    #[test]
+    fn squeeze_odd_panels_remainder_bytes() {
+        hexyl()
+            .arg("hello_world_elf64")
+            .arg("--color=never")
+            .arg("--skip=1024")
+            .arg("--length=4092") // 4 byte remainder
+            .arg("--panels=3")
+            .assert()
+            .success()
+            .pretty_stdout(
+                "\
+┌────────┬─────────────────────────┬─────────────────────────┬─────────────────────────┬────────┬────────┬────────┐
+│00000400│ 00 00 00 00 00 00 00 00 ┊ 00 00 00 00 00 00 00 00 ┊ 00 00 00 00 00 00 00 00 │⋄⋄⋄⋄⋄⋄⋄⋄┊⋄⋄⋄⋄⋄⋄⋄⋄┊⋄⋄⋄⋄⋄⋄⋄⋄│
+│*       │                         ┊                         ┊                         │        ┊        ┊        │
+│00001000│ ba 0e 00 00 00 b9 00 20 ┊ 40 00 bb 01 00 00 00 b8 ┊ 04 00 00 00 cd 80 b8 01 │×•⋄⋄⋄×⋄ ┊@⋄×•⋄⋄⋄×┊•⋄⋄⋄×××•│
+│00001018│ 00 00 00 cd 80 00 00 00 ┊ 00 00 00 00 00 00 00 00 ┊ 00 00 00 00 00 00 00 00 │⋄⋄⋄××⋄⋄⋄┊⋄⋄⋄⋄⋄⋄⋄⋄┊⋄⋄⋄⋄⋄⋄⋄⋄│
+│00001030│ 00 00 00 00 00 00 00 00 ┊ 00 00 00 00 00 00 00 00 ┊ 00 00 00 00 00 00 00 00 │⋄⋄⋄⋄⋄⋄⋄⋄┊⋄⋄⋄⋄⋄⋄⋄⋄┊⋄⋄⋄⋄⋄⋄⋄⋄│
+│*       │                         ┊                         ┊                         │        ┊        ┊        │
+│000013f0│ 00 00 00 00 00 00 00 00 ┊ 00 00 00 00             ┊                         │⋄⋄⋄⋄⋄⋄⋄⋄┊⋄⋄⋄⋄    ┊        │
+└────────┴─────────────────────────┴─────────────────────────┴─────────────────────────┴────────┴────────┴────────┘
+",
+            );
+    }
+
+    #[test]
+    fn squeeze_plain() {
+        hexyl()
+            .arg("hello_world_elf64")
+            .arg("--color=never")
+            .arg("--skip=1024")
+            .arg("--length=4096")
+            .arg("--plain")
+            .assert()
+            .success()
+            .pretty_stdout(
+                "  \
+  00 00 00 00 00 00 00 00   00 00 00 00 00 00 00 00  
+ *                                                   
+  ba 0e 00 00 00 b9 00 20   40 00 bb 01 00 00 00 b8  
+  04 00 00 00 cd 80 b8 01   00 00 00 cd 80 00 00 00  
+  00 00 00 00 00 00 00 00   00 00 00 00 00 00 00 00  
+ *                                                   
+ *                                                   
+",
+            );
+    }
+
+    #[test]
+    fn squeeze_plain_remainder() {
+        hexyl()
+            .arg("hello_world_elf64")
+            .arg("--color=never")
+            .arg("--skip=1024")
+            .arg("--length=4092") // 4 byte remainder
+            .arg("--plain")
+            .assert()
+            .success()
+            .pretty_stdout(
+                "  \
+  00 00 00 00 00 00 00 00   00 00 00 00 00 00 00 00  
+ *                                                   
+  ba 0e 00 00 00 b9 00 20   40 00 bb 01 00 00 00 b8  
+  04 00 00 00 cd 80 b8 01   00 00 00 cd 80 00 00 00  
+  00 00 00 00 00 00 00 00   00 00 00 00 00 00 00 00  
+ *                                                   
+  00 00 00 00 00 00 00 00   00 00 00 00              
+",
+            );
+    }
+}
+
+mod base {
+    use super::hexyl;
+    use super::PrettyAssert;
+
+    #[test]
+    fn base2() {
+        hexyl()
+            .arg("ascii")
+            .arg("--plain")
+            .arg("--base=binary")
+            .assert()
+            .success()
+            .pretty_stdout(
+                "  00110000 00110001 00110010 00110011 00110100 00110101 00110110 00110111   00111000 00111001 01100001 01100010 01100011 01100100 01100101 00001010  \n"
+            );
+    }
+}
Author	SHA1	Message	Date
David Peter	421bd73ec1	Revert "Replace `libc` with `rustix`" This reverts commit `571312dd6e`.	2022-12-05 09:52:27 +01:00
David Peter	e888021a48	Update version in README, man page	2022-12-05 09:48:10 +01:00
David Peter	7d38f70918	Show 0x00-bytes as '⋄' instead of '0', closes #166	2022-12-05 09:45:38 +01:00
David Peter	c6af2edda8	Bump version	2022-12-05 09:32:07 +01:00
David Peter	a7fadfaaf2	Update dependencies	2022-12-05 09:31:43 +01:00
David Peter	8577a17b14	Ignore EPIPE silently fixes a regression introduced in `a6aeabfde4` closes #181	2022-12-05 09:30:13 +01:00
David Peter	2d8b600c48	Update CHANGELOG	2022-12-05 09:11:47 +01:00
David Peter	f8601e5bc9	Merge pull request #180 from sharifhsn/altdeps Replace outdated dependencies	2022-12-05 09:03:40 +01:00
David Peter	9770b89cf4	Merge pull request #178 from sharifhsn/base [feature] Implement alternate bases	2022-12-05 09:03:03 +01:00
Sharif Haason	571312dd6e	Replace `libc` with `rustix`	2022-12-04 21:48:10 -05:00
Sharif Haason	fcd09fffac	Relax `anstyle` version	2022-12-04 21:43:03 -05:00
Sharif Haason	188e753675	Replace `atty` with `is-terminal`	2022-12-04 21:42:44 -05:00
Sharif Haason	030235afb7	Improve help text for `--base`	2022-12-04 21:36:42 -05:00
Sharif Haason	7847e8cd33	Remove debug statement	2022-11-27 19:45:33 -05:00
Sharif Haason	32f4ce9987	`cargo fmt`	2022-11-27 17:52:29 -05:00
Sharif Haason	2a4b17a162	Add tests for alternate base	2022-11-27 17:32:18 -05:00
Sharif Haason	5e3c49f933	`cargo fmt`	2022-11-27 17:19:48 -05:00
Sharif Haason	fc794b290c	Account for new panel arguments	2022-11-27 17:19:33 -05:00
Sharif Haason	e6000a56f4	Parse `-b` argument	2022-11-27 17:18:38 -05:00
Sharif Haason	2861cd51ac	Adjust panel calculation to account for base and group	2022-11-27 17:17:52 -05:00
Sharif Haason	a8cffbb6df	Move `group_bytes` so it can be used for panels	2022-11-27 17:17:25 -05:00
Sharif Haason	7bb6343d2a	Add `--base`/`-b` argument	2022-11-27 17:16:48 -05:00
Sharif Haason	7de17c4f35	Adjust spaces on empty lines	2022-11-27 17:15:26 -05:00
Sharif Haason	ec61c2a789	Print header only if non-empty	2022-11-27 17:14:30 -05:00
Sharif Haason	7f7b88a914	Adjust tests	2022-11-27 17:13:36 -05:00
Sharif Haason	85fa75ba67	Differentiate format on base	2022-11-27 17:11:55 -05:00
Sharif Haason	d5d645fc48	Add `Base` to `Printer`	2022-11-27 17:11:21 -05:00
David Peter	8d3aa65134	Merge pull request #176 from sharifhsn/anstyle Change `ansi_term` to `anstyle`	2022-11-27 21:02:26 +01:00
Sharif Haason	252b4e84c3	Merge branch 'master' into anstyle	2022-11-27 10:03:53 -05:00
Sharif Haason	3dc118d0ad	`cargo update`	2022-11-27 09:47:38 -05:00
Mikhail Katychev	b1ff8b6ce4	added squeeze tests	2022-11-26 20:18:21 +01:00
David Peter	fe65792b96	Add CHANGELOG entry	2022-11-26 13:07:06 +01:00
David Peter	31c0bcfeae	Improve error messages	2022-11-26 13:07:06 +01:00
RinHizakura	c0f94ad6aa	Refine the support of byte grouping	2022-11-26 13:07:06 +01:00
RinHizakura	55fed5e3c0	Fix for clap4	2022-11-26 13:07:06 +01:00
RinHizakura	aeee0a1033	Add new integration tests for group bytes feature	2022-11-26 13:07:06 +01:00
RinHizakura	179c8f40a2	Support byte grouping	2022-11-26 13:07:06 +01:00
Sharif Haason	fb2500d7d6	Include `Cargo.lock`	2022-11-19 11:40:03 -05:00
Sharif Haason	ad9ecda952	Remove `once_cell` dependency	2022-11-19 11:04:59 -05:00
Sharif Haason	c43effefd6	`cargo fmt`	2022-11-19 11:04:13 -05:00
Sharif Haason	0b6454ed9d	Use `Vec` of enums for color instead of `HashMap`	2022-11-19 10:50:31 -05:00
Sharif Haason	557ae66ed5	Update `Cargo.lock`	2022-11-18 16:15:49 -05:00
Sharif Haason	df1afdc73f	Merge branch 'anstyle' of https://github.com/sharifhsn/hexyl into anstyle	2022-11-18 16:15:12 -05:00
Sharif Haason	9106b899b2	Bump MSRV	2022-11-18 19:22:24 +01:00
Sharif Haason	df1c36e5a7	Satisfy clippy	2022-11-18 19:22:24 +01:00
Sharif Haason	ac610f7bad	Add `get_one` and fix ordering	2022-11-18 19:22:24 +01:00
Sharif Haason	767740865f	Update predicate for `default_value_if`	2022-11-18 19:22:24 +01:00
Sharif Haason	1fb324f411	Use `ArgAction` for flags	2022-11-18 19:22:24 +01:00
Sharif Haason	3d0bc3d0eb	Replace 'value_of `with` get_one::<String>`	2022-11-18 19:22:24 +01:00
Sharif Haason	8a52261a50	Replace `possible_values` with `value_parser`	2022-11-18 19:22:24 +01:00
Sharif Haason	ccc4fb9ba9	Replace `takes_value` with `num_args`	2022-11-18 19:22:24 +01:00
Sharif Haason	0baa22f152	`DeriveDisplayOrder` now default	2022-11-18 19:22:24 +01:00
Sharif Haason	165ced9307	Update to `clap` 4.0	2022-11-18 19:22:24 +01:00
Sharif Haason	3888a20dfe	Bump MSRV	2022-11-18 11:06:18 -05:00
Sharif Haason	75b37fa125	Use compatible lockfile	2022-11-18 11:01:39 -05:00
Sharif Haason	794e1935e3	Prerender color strings for better performance	2022-11-18 10:39:54 -05:00
Sharif Haason	c49aa079b4	Add color only when needed	2022-11-18 08:19:13 -05:00
Sharif Haason	675ef6d4a8	Remove calls to `ansi_term`	2022-11-17 22:33:49 -05:00
Sharif Haason	eade38c94a	Explicitly paint with style formatting	2022-11-17 22:33:03 -05:00
Sharif Haason	98ceec18cd	Replace colors with ANSI styles	2022-11-17 22:15:53 -05:00
Sharif Haason	a49f295acc	Replace deprecated `ansi_term` with `anstyle`	2022-11-17 22:12:00 -05:00
Sharif Haason	0caab15255	Document the main loop	2022-11-13 22:15:41 +01:00
Sharif Haason	828fb210ce	Use repeat byte when discovering squeeze	2022-11-13 22:15:41 +01:00
Sharif Haason	1e43783616	Clean up flags for ergonomics	2022-11-13 22:15:41 +01:00
Sharif Haason	6b7cfefec6	Use repeated byte optimization on nonzero bytes	2022-11-13 22:15:41 +01:00
Sharif Haason	5f82942f98	Add second check if `read` fails unexpectedly	2022-11-13 22:15:41 +01:00
Sharif Haason	f6a1c4e8e3	Add unit tests for new implementation of squeeze	2022-11-13 22:15:41 +01:00
Sharif Haason	b4fb1b079c	Print last line only when squeezed	2022-11-13 22:15:41 +01:00
Sharif Haason	f9f59d653d	Print asterisk when no position panel	2022-11-13 22:15:41 +01:00
Sharif Haason	c82695f0a9	Fix incomplete line ending when squeezed	2022-11-13 22:15:41 +01:00
Sharif Haason	9d938b11ed	Remove unnecessary ending case (covered by next)	2022-11-13 22:15:41 +01:00
Sharif Haason	d5982c0eb0	Optimize line check when squeezing zero bytes	2022-11-13 22:15:41 +01:00
Sharif Haason	1502419ad4	Document `byte_hex_panel_g`	2022-11-13 22:15:41 +01:00
Sharif Haason	f5be845d70	Satisfy `clippy`	2022-11-13 22:15:41 +01:00
Sharif Haason	664025477b	Alter when position panel is called	2022-11-13 22:15:41 +01:00
Sharif Haason	074bc791c2	Fix incomplete line ending	2022-11-13 22:15:41 +01:00
Sharif Haason	77a4ad25f1	Remove unnecessary import	2022-11-13 22:15:41 +01:00
Sharif Haason	ca31d466ba	Keep newline consistent	2022-11-13 22:15:41 +01:00
Sharif Haason	945e7a3472	Remove unnecessary squeezer module	2022-11-13 22:15:41 +01:00
Sharif Haason	75d612ff11	Alter newline usage	2022-11-13 22:15:41 +01:00
Sharif Haason	15e8abfc9a	Complete architectural rewrite (intentionally fails)	2022-11-13 22:15:41 +01:00
Sharif Haason	b36d74ed9d	Track `squeeze_byte` correctly	2022-11-13 22:15:41 +01:00
Sharif Haason	094bf63f02	Eliminate unnecessary call to `active`	2022-11-13 22:15:41 +01:00
Sharif Haason	e0e870de27	Store squeezed byte instead of pushing to vector	2022-11-13 22:15:41 +01:00
Sharif Haason	966421c522	Undo inlining to satisfy MSRV	2022-11-13 22:15:41 +01:00
Sharif Haason	166c2cc46b	Inline `StdoutLock` variable	2022-11-13 22:15:41 +01:00
Sharif Haason	74a5e4bc84	Print first line always	2022-11-13 22:15:41 +01:00
Sharif Haason	363ea0a586	Undo perf regression on squeezer	2022-11-13 22:15:41 +01:00
Sharif Haason	1c4c7ed9a5	Satisfy `clippy`	2022-11-13 22:15:41 +01:00
Sharif Haason	b5c224c119	Fix for no position panel	2022-11-13 22:15:41 +01:00
Sharif Haason	d6e34d9dd2	Fix issues with `hello_world_elf64`	2022-11-13 22:15:41 +01:00
Sharif Haason	1cb346bd13	Fixes `--no-characters` causes output artifacts when squeezing lines #171	2022-11-13 22:15:41 +01:00
Sharif Haason	daa40900bd	Fix char panel showing even if disabled	2022-11-13 22:15:41 +01:00
Sharif Haason	d98c6edb55	Fix overflow when printing without char panel	2022-11-13 22:15:41 +01:00
Sharif Haason	73bfc68cd0	`cargo fmt`	2022-11-13 22:15:41 +01:00
Sharif Haason	5d3f36d066	Remove `write!` formatting from hot loop	2022-11-13 22:15:41 +01:00
Sharif Haason	d214bc63f1	Precalculate position formatting in `Printer` state	2022-11-13 22:15:41 +01:00
Sharif Haason	a6aeabfde4	Refactor code to replace manual buffering with `BufReader` and `BufWriter`	2022-11-13 22:15:41 +01:00
Sharif Haason	9602667991	Rename `with_panels` to `num_panels`	2022-10-04 18:09:47 +02:00
Sharif Haason	9ccf18f4c0	Update CHANGELOG.md with PrinterBuilder	2022-10-04 18:09:47 +02:00
Sharif Haason	aa921ca184	Rename `with_squeeze` to `enable_squeezing`	2022-10-04 18:09:47 +02:00
Sharif Haason	4823523b7d	Remove superfluous `with_writer` function	2022-10-04 18:09:47 +02:00
Sharif Haason	4569c8f871	Self-document `simple.rs` example with builder API	2022-10-04 18:09:47 +02:00
Sharif Haason	80163764c3	Implement builder pattern	2022-10-04 18:09:47 +02:00
Sharif Haason	9bc81820e7	Update CHANGELOG	2022-09-11 21:45:06 +02:00
Sharif Haason	273ef0c045	Remove short options for `panels` and `terminal-width`	2022-09-11 21:45:06 +02:00
Sharif Haason	ac1a67e90c	Fix abbreviation clash	2022-09-11 21:45:06 +02:00
Sharif Haason	12324d615a	Rename `--columns` to `--panels`	2022-09-11 21:45:06 +02:00
Sharif Haason	6b062ba127	Fix typo	2022-09-11 21:45:06 +02:00
Sharif Haason	8c7c3a073c	Use `--columns=auto` instead of `--auto-width`	2022-09-11 21:45:06 +02:00
Sharif Haason	0565901fad	Return a proper error if terminal size fails	2022-09-11 21:45:06 +02:00
Sharif Haason	41b3241718	Change columns type to `u16`	2022-09-11 21:45:06 +02:00
Sharif Haason	975a406d20	Remove debugging line	2022-09-11 21:45:06 +02:00
Sharif Haason	aa43c20f39	Bump MSRV	2022-09-11 21:45:06 +02:00
Sharif Haason	1fdd770093	Implement -a and -t for terminal width setting	2022-09-11 21:45:06 +02:00
Sharif Haason	a3fde45c18	Added test for multiple columns	2022-09-11 21:45:06 +02:00
Sharif Haason	85659a9cd6	Prevent overflow when columns >= 32	2022-09-11 21:45:06 +02:00
sharifandDavid Peter	2a4a22c9cb	Update src/squeezer.rs Co-authored-by: David Peter <sharkdp@users.noreply.github.com>	2022-09-11 21:45:06 +02:00
Sharif Haason	b820bdfeca	`cargo fmt`	2022-09-11 21:45:06 +02:00
Sharif Haason	b9348ffb1d	Adds --columns for Print using custom width #13	2022-09-11 21:45:06 +02:00
Giovanni Tirloni	55cf7b034c	Add Fedora install instructions	2022-06-23 21:56:49 +02:00
Vadym-Valdis Yudaiev	c622c8217f	doc: Add example usage with terminal pager	2022-05-24 18:57:21 +02:00