#!/bin/sh

# to use zz with vim, write to your .vimrc:
#
# noremap <silent> zz> :w !zz<CR><CR>                                              
# noremap <silent> zz< :r !zz<CR>

ZZ=${ZZ:-$HOME/.zz}

if [ "$*" = -h -o "$*" = --help ]; then
  exec cat<<EOD
zz is the generic clip board program. See also the edit helper program ezz.
The clip board is \$ZZ (default: \$HOME/.zz). Options and modes are:

"zz"            write \$ZZ to STDOUT
"zz file(s)"    copy file(s) into \$ZZ
"zz -"          write STDIN (keyboard, mouse buffer) to \$ZZ
"zz +"          add STDIN (keyboard, mouse buffer) to \$ZZ
"... | zz"      write STDIN from pipe to \$ZZ
"... | zz +"    add STDIN from pipe to \$ZZ
"zz | ..."      write \$ZZ to pipe
"zz .."         write previous \$ZZ to STDOUT

Examples:

  zz *.txt
  ls -l | zz
  zz | wc -l
  (within mutt:) |zz
  (within tin:)  |azz
  (within vi:)   :w !zz
  (within vi:)   :r !zz
  
Limitation: zz does not work across different accounts or hosts! Use xx instead.
EOD
fi

if [ "$1" = + ]; then 
  shift
  exec cat -- "$@" >>$ZZ
fi

if [ -t 0 ]; then
    if [ -z "$1" ]; then 
        exec cat -- $ZZ
    elif [ "$1" = .. ]; then 
        exec cat -- $ZZ~
    else 
        test -f $ZZ && mv $ZZ $ZZ~
        exec cat -- "$@" >$ZZ
    fi
else
    test -f $ZZ && mv $ZZ $ZZ~
    exec cat >$ZZ
fi