examples/scripts.noah/number.bash

   1 # number.bash
   2 # Author: Noah Friedman <friedman@prep.ai.mit.edu>
   3 # Created: 1993-02-22
   4 # Last modified: 1993-04-01
   5 # Public domain
   6
   7 # Conversion to bash v2 syntax done by Chet Ramey
   8
   9 # Commentary:
  10 # Code:
  11
  12 #:docstring number:
  13 # Usage: number [number]
  14 #
  15 # Converts decimal integers to english notation.  Spaces and commas are
  16 # optional.  Numbers 67 digits and larger will overflow this script.
  17 #
  18 # E.g: number 99,000,000,000,000,454
  19 #      => ninety-nine quadrillion four hundred fifty-four
  20 #
  21 #:end docstring:
  22
  23 function number ()
  24 {
  25  local result
  26  local val1
  27  local val2
  28  local val3
  29  local d1
  30  local d2
  31  local d3
  32
  33    case "$*" in
  34       *[!0-9,.]* )
  35          echo "number: invalid character in argument." 1>&2
  36          return 1
  37         ;;
  38       *.* )
  39          echo "number: fractions not supported (yet)." 1>&2
  40          return 1
  41         ;;
  42    esac
  43
  44    result=''
  45
  46    eval set - "`echo ${1+\"$@\"} | sed -n -e '
  47       s/[, ]//g;s/^00*/0/g;s/\(.\)\(.\)\(.\)$/\"\1 \2 \3\"/;
  48       :l
  49       /[0-9][0-9][0-9]/{
  50          s/\([^\" ][^\" ]*\)\([^\" ]\)\([^\" ]\)\([^\" ]\)/\1\"\2 \3 \4\"/g;
  51          t l
  52       }
  53       /^[0-9][0-9][0-9]/s/\([^\" ]\)\([^\" ]\)\([^\" ]\)/\"\1 \2 \3\"/;
  54       /^[0-9][0-9]/s/\([^\" ]\)\([^\" ]\)/\"\1 \2\"/;
  55       /^[0-9]/s/^\([^\" ][^\" ]*\)/\"\1\"/g;s/\"\"/\" \"/g;p;'`"
  56
  57    while test $# -ne 0 ; do
  58       eval `set - $1;
  59             d3='' d2='' d1=''
  60             case $# in
  61                1 ) d1=$1 ;;
  62                2 ) d2=$1 d1=$2 ;;
  63                3 ) d3=$1 d2=$2 d1=$3 ;;
  64             esac
  65             echo "d3=\"${d3}\" d2=\"${d2}\" d1=\"${d1}\""`
  66
  67       val1='' val2='' val3=''
  68
  69       case "${d3}" in
  70          '1' ) val3='one'   ;;
  71          '2' ) val3='two'   ;;
  72          '3' ) val3='three' ;;
  73          '4' ) val3='four'  ;;
  74          '5' ) val3='five'  ;;
  75          '6' ) val3='six'   ;;
  76          '7' ) val3='seven' ;;
  77          '8' ) val3='eight' ;;
  78          '9' ) val3='nine'  ;;
  79       esac
  80
  81       case "${d2}" in
  82          '1' ) val2='teen'    ;;
  83          '2' ) val2='twenty'  ;;
  84          '3' ) val2='thirty'  ;;
  85          '4' ) val2='forty'   ;;
  86          '5' ) val2='fifty'   ;;
  87          '6' ) val2='sixty'   ;;
  88          '7' ) val2='seventy' ;;
  89          '8' ) val2='eighty'  ;;
  90          '9' ) val2='ninety'  ;;
  91       esac
  92
  93       case "${val2}" in
  94          'teen')
  95             val2=''
  96             case "${d1}" in
  97                '0') val1='ten'       ;;
  98                '1') val1='eleven'    ;;
  99                '2') val1='twelve'    ;;
 100                '3') val1='thirteen'  ;;
 101                '4') val1='fourteen'  ;;
 102                '5') val1='fifteen'   ;;
 103                '6') val1='sixteen'   ;;
 104                '7') val1='seventeen' ;;
 105                '8') val1='eighteen'  ;;
 106                '9') val1='nineteen'  ;;
 107             esac
 108            ;;
 109          0 ) : ;;
 110          * )
 111             if test ".${val2}" != '.' && test ".${d1}" != '.0' ; then
 112                val2="${val2}-"
 113             fi
 114             case "${d1}" in
 115                '0') val2="${val2} " ;;
 116                '1') val1='one'    ;;
 117                '2') val1='two'    ;;
 118                '3') val1='three'  ;;
 119                '4') val1='four'   ;;
 120                '5') val1='five'   ;;
 121                '6') val1='six'    ;;
 122                '7') val1='seven'  ;;
 123                '8') val1='eight'  ;;
 124                '9') val1='nine'   ;;
 125             esac
 126            ;;
 127       esac
 128
 129       if test ".${val3}" != '.' ; then
 130          result="${result}${val3} hundred "
 131       fi
 132
 133       if test ".${val2}" != '.' ; then
 134          result="${result}${val2}"
 135       fi
 136
 137       if test ".${val1}" != '.' ; then
 138          result="${result}${val1} "
 139       fi
 140
 141       if test ".${d1}${d2}${d3}" != '.000' ; then
 142          case $# in
 143              0 | 1 ) ;;
 144              2 ) result="${result}thousand " ;;
 145              3 ) result="${result}million " ;;
 146              4 ) result="${result}billion " ;;
 147              5 ) result="${result}trillion " ;;
 148              6 ) result="${result}quadrillion " ;;
 149              7 ) result="${result}quintillion " ;;
 150              8 ) result="${result}sextillion " ;;
 151              9 ) result="${result}septillion " ;;
 152             10 ) result="${result}octillion " ;;
 153             11 ) result="${result}nonillion " ;;
 154             12 ) result="${result}decillion " ;;
 155             13 ) result="${result}undecillion " ;;
 156             14 ) result="${result}duodecillion " ;;
 157             15 ) result="${result}tredecillion " ;;
 158             16 ) result="${result}quattuordecillion " ;;
 159             17 ) result="${result}quindecillion " ;;
 160             18 ) result="${result}sexdecillion " ;;
 161             19 ) result="${result}septendecillion " ;;
 162             20 ) result="${result}octodecillion " ;;
 163             21 ) result="${result}novemdecillion " ;;
 164             22 ) result="${result}vigintillion " ;;
 165             * )
 166                echo "Error: number too large (66 digits max)." 1>&2
 167                return 1
 168               ;;
 169          esac
 170       fi
 171
 172       shift
 173    done
 174
 175    set - ${result}
 176    case "$*" in
 177       '') set - 'zero' ;;
 178    esac
 179
 180    echo ${1+"$@"}
 181 }
 182
 183 provide number
 184
 185 # number.bash ends here