user-tools/replcmd

   1 #!/bin/bash
   2
   3 true <<'EOF'
   4 =pod
   5
   6 =head1 NAME
   7
   8 replcmd - Wrap any command in a REPL interface
   9
  10 =head1 SYNOPSIS
  11
  12 replcmd I<COMMAND> [I<ARGS>]
  13
  14 =head1 DESCRIPTION
  15
  16 Run I<COMMAND> repeatedly with words read from STDIN appended to its argument list after I<ARGS>.
  17 You may add prompt, history, and other CLI-goodies on top of replcmd(1) by eg. rlwrap(1).
  18
  19 =head1 RUNTIME COMMANDS
  20
  21 =over 4
  22
  23 =item I<WORDS>
  24
  25 Run I<COMMAND> I<ARGS> I<WORDS>.
  26 I<WORDS> get split on C<$IFS>.
  27
  28 =item # [I<PARAM-1> [I<PARAM-2> [...]]]
  29
  30 Prefix the line with a C<#> hash mark to
  31 set fixed parameters for I<COMMAND>.
  32 These will be inserted between I<ARGS> and I<WORDS> read form STDIN.
  33
  34 =back
  35
  36 =head1 EXAMPLE
  37
  38 rlwrap --remember --command-name dict --substitute-prompt "dict> " replcmd dict
  39
  40 =cut
  41
  42 EOF
  43
  44
  45 if [ $# -le 0 ]
  46 then
  47         pod2text "$0" >&2
  48         exit 2
  49 fi
  50
  51 fixed_params=()
  52
  53 while read -a words
  54 do
  55         line=${words[*]}
  56         if [[ $line =~ ^#\s*(.+) ]]
  57         then
  58                 fixed_params=(${BASH_REMATCH[1]})
  59                 continue
  60         fi
  61
  62         if [ ${#words[@]} != 0 ]
  63         then
  64                 "$@" "${fixed_params[@]}" "${words[@]}"
  65         fi
  66 done