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tmux/.tmux/plugins/tmux-cpu/scripts/helpers.sh

@@ -0,0 +1,132 @@
+export LANG=C
+export LC_ALL=C
+
+get_tmux_option() {
+  local option="$1"
+  local default_value="$2"
+  local option_value="$(tmux show-option -qv "$option")"
+  if [ -z "$option_value" ]; then
+    option_value="$(tmux show-option -gqv "$option")"
+  fi
+  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 or equal?
+fcomp() {
+  awk -v n1=$1 -v n2=$2 'BEGIN {if (n1<=n2) exit 0; exit 1}'
+}
+
+load_status() {
+  local percentage=$1
+  cpu_medium_thresh=$(get_tmux_option "@cpu_medium_thresh" "30")
+  cpu_high_thresh=$(get_tmux_option "@cpu_high_thresh" "80")
+  if fcomp $cpu_high_thresh $percentage; then
+    echo "high"
+  elif fcomp $cpu_medium_thresh $percentage && fcomp $percentage $cpu_high_thresh; then
+    echo "medium"
+  else
+    echo "low"
+  fi
+}
+
+temp_status() {
+  local temp=$1
+  cpu_temp_medium_thresh=$(get_tmux_option "@cpu_temp_medium_thresh" "80")
+  cpu_temp_high_thresh=$(get_tmux_option "@cpu_temp_high_thresh" "90")
+  if fcomp $cpu_temp_high_thresh $temp; then
+    echo "high"
+  elif fcomp $cpu_temp_medium_thresh $temp && fcomp $temp $cpu_temp_high_thresh; then
+    echo "medium"
+  else
+    echo "low"
+  fi
+}
+
+cpus_number() {
+  if is_linux; then
+    if command_exists "nproc"; then
+      nproc
+    else
+      echo "$(( $(sed -n 's/^processor.*:\s*\([0-9]\+\)/\1/p' /proc/cpuinfo | tail -n 1) + 1 ))"
+    fi
+  else
+    sysctl -n hw.ncpu
+  fi
+}
+
+command_exists() {
+  local command="$1"
+  command -v "$command" &> /dev/null
+}
+
+get_tmp_dir() {
+  local tmpdir="${TMPDIR:-${TMP:-${TEMP:-/tmp}}}"
+  [ -d "$tmpdir" ] || local tmpdir=~/tmp
+  echo "$tmpdir/tmux-$EUID-cpu"
+}
+
+get_time() {
+  date +%s.%N
+}
+
+get_cache_val(){
+  local key="$1"
+  # seconds after which cache is invalidated
+  local timeout="${2:-2}"
+  local cache="$(get_tmp_dir)/$key"
+  if [ -f "$cache" ]; then
+    awk -v cache="$(head -n1 "$cache")" -v timeout=$timeout -v now=$(get_time) \
+      'BEGIN {if (now - timeout < cache) exit 0; exit 1}' \
+      && tail -n+2 "$cache"
+  fi
+}
+
+put_cache_val(){
+  local key="$1"
+  local val="${@:2}"
+  local tmpdir="$(get_tmp_dir)"
+  [ ! -d "$tmpdir" ] && mkdir -p "$tmpdir" && chmod 0700 "$tmpdir"
+  echo "$(get_time)" > "$tmpdir/$key"
+  echo -n "$val" >> "$tmpdir/$key"
+  echo -n "$val"
+}
+
+cached_eval(){
+  local command="$1"
+  local key="$(basename "$command")"
+  local val="$(get_cache_val "$key")"
+  if [ -z "$val" ]; then
+    put_cache_val "$key" "$($command "${@:2}")"
+  else
+    echo -n "$val"
+  fi
+}