dmenu_text_open.bash

#!/bin/bash
#------------------------------------------------------------------------------
# > Copyright (C) 2017-2020 GRUBERND http://grubernd.at
# > released under an MIT License
#
# ## Open files via dmenu
#
# _Revision 2020-07-29_
#
# ### 20.07
# + Improve find command for less clutter
# + Fix bug when no previous cache exists
#
# ### 17.05
# + Initial version
#
# Dependencies:
# + `dmenu`
# + `xargs`
# + `exo-open` from the exo-utils package


#------------------------------------------------------------------------------
_dmenu_write_new_cache() {

    local cache_file="$1"

    find $HOME/ -path "$HOME/.*" -prune \
        -o -iname "*mkd" \
        -o -iname "*ods" \
        -o -iname "*txt" \
        |grep -v "$HOME/\." \
        |sort -u \
        |tee "$cache_file"
}


#------------------------------------------------------------------------------
_dmenu_text_cache() {

    # where is the cache file?
    # if no xdg dir, fall back to dotfile in ~
    cachedir=${XDG_CACHE_HOME:-"$HOME/.cache"}

    if [ -d "$cachedir" ]; then
        cache="$cachedir/dmenu_home_text"
    else
        cache="$HOME/.dmenu_home_text"
    fi

    if [ ! -f "$cache" ]; then
        _dmenu_write_new_cache "$cache"
    fi

    # recreate the cache if it is older than 6 hours else just cat it

    if [ -f $(find $cache -mmin +360) ]; then
        _dmenu_write_new_cache "$cache"
    else
        cat "$cache"
    fi
}


#------------------------------------------------------------------------------
# MAIN

_dmenu_text_cache | dmenu -i -l 20 -sb '#c33' -sf '#fff' | xargs exo-open

#------------------------------------------------------------------------------