Fixing issue with termsize::get when compiled in release mode

The function is erroneously returnin zero
See softprops/termsize#19 for details

Cargo.toml

@@ -61,6 +61,7 @@ flate2 = "1.0.27"
 glob = "0.3.1"
 indicatif = "0.17.8"
 lazy_static = "1.4.0"
+libc = "0.2.155"
 md5 = "0.7.0"
 numfmt = "1.1.1"
 num_cpus = "1.4"

src/fixed_termsize.rs

@@ -0,0 +1,52 @@
+use libc::ioctl;
+use libc::{c_ushort, STDOUT_FILENO, TIOCGWINSZ};
+use termsize::Size;
+
+// NOTE: the `termsize` library has merged a fix but is not released
+// See: https://github.com/softprops/termsize/issues/19
+
+/// A representation of the size of the current terminal
+#[repr(C)]
+#[derive(Debug)]
+struct UnixSize {
+    /// number of rows
+    pub rows: c_ushort,
+    /// number of columns
+    pub cols: c_ushort,
+    x: c_ushort,
+    y: c_ushort,
+}
+
+/// Gets the current terminal size
+#[cfg(unix)]
+fn fixed_nix_get() -> Option<Size> {
+    // http://rosettacode.org/wiki/Terminal_control/Dimensions#Library:_BSD_libc
+    if atty::isnt(atty::Stream::Stdout) {
+        return None;
+    }
+    let mut us = UnixSize {
+        rows: 0,
+        cols: 0,
+        x: 0,
+        y: 0,
+    };
+    let r = unsafe { ioctl(STDOUT_FILENO, TIOCGWINSZ.into(), &mut us) };
+    if r == 0 {
+        Some(Size {
+            rows: us.rows,
+            cols: us.cols,
+        })
+    } else {
+        None
+    }
+}
+
+#[cfg(unix)]
+pub fn get() -> Option<Size> {
+    fixed_nix_get()
+}
+
+#[cfg(not(unix))]
+pub fn get() -> Option<Size> {
+    termsize::get()
+}

src/main.rs

@@ -25,6 +25,7 @@ extern crate rand_seeder;
 extern crate ratatui;
 #[macro_use]
 extern crate lazy_static;
+extern crate libc;
 extern crate num_cpus;
 extern crate numfmt;
 #[cfg(not(windows))]
@@ -133,6 +134,7 @@ macro_rules! command_list {
 
 mod cmd;
 mod config;
+mod fixed_termsize;
 mod index;
 mod json;
 mod moonblade;

src/util.rs

@@ -22,6 +22,7 @@ use unicode_segmentation::UnicodeSegmentation;
 use unicode_width::UnicodeWidthStr;
 
 use crate::config::{Config, Delimiter};
+use crate::fixed_termsize;
 use crate::select::SelectColumns;
 use crate::CliResult;
 
@@ -300,7 +301,7 @@ pub fn acquire_stty_size() -> Option<termsize::Size> {
 
 pub fn acquire_term_cols(cols_override: &Option<usize>) -> usize {
     match cols_override {
-        None => match termsize::get() {
+        None => match fixed_termsize::get() {
             None => match acquire_stty_size() {
                 None => 80,
                 Some(size) => size.cols as usize,
@@ -312,7 +313,7 @@ pub fn acquire_term_cols(cols_override: &Option<usize>) -> usize {
 }
 
 pub fn acquire_term_rows() -> Option<usize> {
-    termsize::get().map(|size| size.rows as usize)
+    fixed_termsize::get().map(|size| size.rows as usize)
 }
 
 pub fn pretty_print_float<T: Numeric>(f: &mut Formatter, x: T) -> String {