bash/dewey_decimal_system/dewey.sh

   1 #!/bin/bash
   2 #This script generates directory structure based on
   3 #Dewey Decimal System Categories list copypasted from wikipedia...
   4 #Generated directory structure can be converted to JSON tree for further use
   5
   6 ddslist='dds.txt'
   7 ddsdir='./dds'
   8
   9 rm -r "$ddsdir"
  10
  11 dds_get_path() {
  12         for i in {1..3}; do
  13                 id=$(
  14                         echo -n "$1" | grep -Eo "[0-9]{$i}" | head -n 1;
  15                         #echo 000 | grep -Eo "[0-9]{$(( 3-$i ))}" | head -n 1;
  16                 )
  17                 zeros=000
  18                 echo "${id}${zeros:$i}";
  19         done
  20 }
  21
  22 dds_get_category() {
  23         cat dds.txt | grep ^"$1" | head -n "$2" | tail -n 1
  24 }
  25
  26 dds_get_category_name() {
  27         dds_get_category "$1" "$2" | cut -d ' ' -f 2- | grep -o '[a-zA-Z\[].*'
  28 }
  29
  30 dds_add_category() {
  31         path="$2"
  32         level=1;
  33         dds_get_path "$1" | while read id; do
  34                 name="$(dds_get_category_name "$id" "$level")";
  35                 path+="/$id - $name";
  36                 [ $level -eq 3 ] && {
  37                         mkdir -p "$path";
  38                         echo "$path";
  39                 }
  40                 level=$(( $level+1 ));
  41         done
  42 }
  43
  44 time for i in {000..999}; do
  45         dds_add_category "$i" "$ddsdir";
  46 done