hy-compare

hy-compare

#!/usr/bin/env bash
# shellcheck disable=SC2312

declare -a on_exit_items

TR="$(command -v gtr 2> /dev/null || \
      command -v tr  2> /dev/null)"
export TR

AWK="$(command -v gawk 2> /dev/null || \
       command -v awk  2> /dev/null)"
export AWK

TAIL="$(command -v gtail 2> /dev/null || \
        command -v tail  2> /dev/null)"
export TAIL

"$(command -v jq)" --version 2>&1 | \
  grep -q 'jq' ||
    {
      printf '%s\n' "Error: No jq in PATH."
      exit 1
    }

"$(command -v hyperfine)" --version 2>&1 | \
  grep -q 'hyperfine' ||
    {
      printf '%s\n' "Error: No hyperfine in PATH."
      exit 1
    }

"$(command -v ministat)" --version 2>&1 | \
  grep -q 'ministat' ||
    {
      printf '%s\n' "Error: No ministat in PATH."
      exit 1
    }

"$(command -v avg)" --version 2>&1 | \
  grep -q 'misc-scripts' || \
    {
      printf '%s\n' "Warning: no misc-scripts avg; some stats omitted."
      AVG="true"
      export AVG
      NO_AVG=1
      export NO_AVG
    }

# shellcheck disable=SC2065
test "${NO_AVG:-0}" -ne 1 > /dev/null 2>&1 && \
    {
      AVG="$(command -v avg)"
      export AVG
    }

function on_exit()
{
  for i in "${on_exit_items[@]}"
  do
    # shellcheck disable=SC2086
    eval ${i}
  done
}

function add_on_exit()
{
  local n="${#on_exit_items[*]}"
  on_exit_items[n]="${*}"
  if [[ "${n}" -eq 0 ]]
  then
    trap on_exit EXIT
  fi
}

_tmpfile=$(mktemp) || \
  {
    printf '%s\n' ""
    exit 1
  }

add_on_exit "rm -f ${_tmpfile:?} > /dev/null 2>&1"

# shellcheck disable=SC2065
test ${#} -ne 3 > /dev/null 2>&1 && \
  {
    printf '%s\n' "Invalid number of arguments (${#})"
    exit 1
  }

# shellcheck disable=SC2065
test "${1:-0}" -lt 3 > /dev/null 2>&1 && \
  {
    printf '%s\n' "Invalid number of iterations."
    exit 1
  }

printf '%s\n' ""
"$(command -v hyperfine)" \
  --export-json "${_tmpfile:?}" \
  --runs "${1:?}" "${2:?}" "${3:?}"
  ret=${?}

# shellcheck disable=SC2065
test "${ret:-0}" -ne 0 > /dev/null 2>&1 && \
  {
    printf '%s\n' "Hyperfine error (${ret:?})"
    exit "${ret:?}"
  }
printf '%s\n' ""

add_on_exit "rm -f ./*.hysplit > /dev/null 2>&1"

"$(command -v jq)" -r '.results[] .times' < "${_tmpfile:?}" | \
  ${TR:-tr} -d ',][ ' | \
  ${AWK:-awk} -v RS= '{print > ("out" NR ".hysplit")}'

"$(command -v ministat)" \
  -w "$(( "$(tput cols 2> /dev/null || printf '%s\n' 80)" - 6 ))" \
  ./*.hysplit | ${TAIL:-tail} -n +3

test "${NO_AVG:-0}" -ne 1 &&
  {
    n=0
    for inputs in ./*.hysplit
    do
      n="$(( n + 1 ))"
      printf '\n%s %d:\n' "Set" "${n:?}"
      "${AVG:?}" -a -m -g -h -s -x "${inputs:?}"
    done
  }
printf '%s\n' ""