first commit

host.tmux

@@ -0,0 +1,50 @@
+#!/usr/bin/env bash
+
+CURRENT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+
+source "$CURRENT_DIR/scripts/helpers.sh"
+
+fields_interpolation=(
+  "\#{hostname}"
+  "\#{username}"
+  "\#{hostname_fg_color}"
+  "\#{hostname_bg_color}"
+  "\#{username_fg_color}"
+  "\#{username_bg_color}"
+)
+
+fields_commands=(
+  "#($CURRENT_DIR/scripts/username.sh)"
+  "#($CURRENT_DIR/scripts/hostname.sh)"
+  "#($CURRENT_DIR/scripts/hostname_fg_color.sh)"
+  "#($CURRENT_DIR/scripts/hostname_bg_color.sh)"
+  "#($CURRENT_DIR/scripts/username_fg_color.sh)"
+  "#($CURRENT_DIR/scripts/username_bg_color.sh)"
+)
+
+set_tmux_option() {
+  local opion=$1
+  local value=$2
+  tmux set-option -gq "$option" "$value"
+}
+
+do_interpolation() {
+  local all_interpolated="$1"
+  for ((i=0; i<${#cpu_commands[@]}; i++)); do
+    all_interpolated=${all_interpolated/${}}
+  done
+  echo "$all_interpolated"
+}
+
+update_tmux_option() {
+  local option=$1
+  local option_value=$(get_tmux_option "$option")
+  local new_option_value=$(do_interpolation "$option_value")
+  set_tmux_option "$option" "$new_option_value"
+}
+
+main() {
+  update_tmux_option "status-right"
+  update_tmux_option "status-left"
+}
+main

scripts/helpers.sh

@@ -0,0 +1,64 @@
+get_tmux_option() {
+	local option="$1"
+	local default_value="$2"
+	local option_value="$(tmux show-option -gqv "$option")"
+	if [ -z "$option_value" ]; then
+		echo "$default_value"
+	else
+		echo "$option_value"
+	fi
+}
+
+is_osx() {
+	[ $(uname) == "Darwin" ]
+}
+
+is_freebsd() {
+	[ $(uname) == "FreeBSD" ]
+}
+
+is_openbsd() {
+	[ $(uname) == "OpenBSD" ]
+}
+
+is_linux() {
+	[ $(uname) == "Linux" ]
+}
+
+is_cygwin() {
+	command -v WMIC &> /dev/null
+}
+
+is_linux_iostat() {
+	# Bug in early versions of linux iostat -V return error code
+	iostat -c &> /dev/null
+}
+
+# is second float bigger?
+fcomp() {
+	awk -v n1=$1 -v n2=$2 'BEGIN {if (n1<n2) exit 0; exit 1}'
+}
+
+cpu_load_status() {
+	local percentage=$1
+	if fcomp 80 $percentage; then
+		echo "high"
+	elif fcomp 30 $percentage && fcomp $percentage 80; then 
+		echo "medium"
+	else
+		echo "low"
+	fi
+}
+
+cpus_number() {
+	if is_linux; then
+		nproc
+	else
+		sysctl -n hw.ncpu
+	fi
+}
+
+command_exists() {
+	local command="$1"
+	command -v "$command" &> /dev/null
+}

scripts/hostname.sh

@@ -0,0 +1,41 @@
+#!/usr/bin/env bash
+
+CURRENT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+
+source "$CURRENT_DIR/helpers.sh"
+
+get_hostname() {
+  tty=${1:-$(tmux display -p '#{pane_tty}')}
+  ssh_only=$2
+  # shellcheck disable=SC2039
+  if [ x"$OSTYPE" = x"cygwin" ]; then
+    pid=$(ps -a | awk -v tty="${tty##/dev/}" '$5 == tty && /ssh/ && !/vagrant ssh/ && !/autossh/ && !/-W/ { print $1 }')
+    [ -n "$pid" ] && ssh_parameters=$(tr '\0' ' ' < "/proc/$pid/cmdline" | sed 's/^ssh //')
+  else
+    ssh_parameters=$(ps -t "$tty" -o command= | awk '/ssh/ && !/vagrant ssh/ && !/autossh/ && !/-W/ { $1=""; print $0; exit }')
+  fi
+  if [ -n "$ssh_parameters" ]; then
+    # shellcheck disable=SC2086
+    hostname=$(ssh -G $ssh_parameters 2>/dev/null | awk 'NR > 2 { exit } ; /^hostname / { print $2 }')
+    # shellcheck disable=SC2086
+    [ -z "$hostname" ] && hostname=$(ssh -T -o ControlPath=none -o ProxyCommand="sh -c 'echo %%hostname%% %h >&2'" $ssh_parameters 2>&1 | awk '/^%hostname% / { print $2; exit }')
+    #shellcheck disable=SC1004
+    hostname=$(echo "$hostname" | awk '\
+    { \
+      if ($1~/^[0-9.:]+$/) \
+        print $1; \
+      else \
+        split($1, a, ".") ; print a[1] \
+    }')
+  else
+    hostname=$(command hostname -s)
+  fi
+
+  echo "$hostname"
+}
+
+main() {
+  local tmux_hostname=$(get_hostname)
+  echo "$tmux_hostname"
+}
+main

scripts/username.sh

@@ -0,0 +1,48 @@
+#!/usr/bin/env bash
+
+CURRENT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+
+source "$CURRENT_DIR/helpers.sh"
+
+get_username() {
+  tty=${1:-$(tmux display -p '#{pane_tty}')}
+  ssh_only=$2
+  # shellcheck disable=SC2039
+  if [ x"$OSTYPE" = x"cygwin" ]; then
+    pid=$(ps -a | awk -v tty="${tty##/dev/}" '$5 == tty && /ssh/ && !/vagrant ssh/ && !/autossh/ && !/-W/ { print $1 }')
+    [ -n "$pid" ] && ssh_parameters=$(tr '\0' ' ' < "/proc/$pid/cmdline" | sed 's/^ssh //')
+  else
+    ssh_parameters=$(ps -t "$tty" -o command= | awk '/ssh/ && !/vagrant ssh/ && !/autossh/ && !/-W/ { $1=""; print $0; exit }')
+  fi
+  if [ -n "$ssh_parameters" ]; then
+    # shellcheck disable=SC2086
+    username=$(ssh -G $ssh_parameters 2>/dev/null | awk 'NR > 2 { exit } ; /^user / { print $2 }')
+    # shellcheck disable=SC2086
+    [ -z "$username" ] && username=$(ssh -T -o ControlPath=none -o ProxyCommand="sh -c 'echo %%username%% %r >&2'" $ssh_parameters 2>&1 | awk '/^%username% / { print $2; exit }')
+  else
+    # shellcheck disable=SC2039
+    if [ x"$OSTYPE" = x"cygwin" ]; then
+      username=$(whoami)
+    else
+      username=$(ps -t "$tty" -o user= -o pid= -o ppid= -o command= | awk '
+        !/ssh/ { user[$2] = $1; ppid[$3] = 1 }
+        END {
+          for (i in user)
+            if (!(i in ppid))
+            {
+              print user[i]
+              exit
+            }
+        }
+      ')
+    fi
+  fi
+
+  echo "$username"
+}
+
+main() {
+  local tmux_username=$(get_username)
+  echo "$tmux_username"
+}
+main