fm - a very simple file manager

# fm v1.9.1 by Kiah Morante
# A very simple file manager.
# Depends on pycp/pymv, http://github.com/yannicklm/pycp and feh
# 'source' this file in a BASH shell

showHidden=0 # Hidden files not shown
showDetails=0 # ls is replaced with ls -lh if showDetails is 1

shopt -s autocd # cd to a dir just by typing its name
PROMPT_COMMAND='[[ ${__new_wd:=$PWD} != $PWD ]] && list; __new_wd=$PWD' # ls after cding

# Shortcuts
source ~/.config/fm/shortcuts # Call all custom shortcuts

alias ..='cd ..'
alias ...='cd ../..'
alias ....='cd ../../..'
alias h='cd ~'
alias n='cd "$n"'

# Keybindings

bind '"\C-l":"list\C-m"'
bind '"\C-h":"hide\C-m"'
bind '"\C-o":"details\C-m"'
bind '"\C-f":"makedir\C-m"'
bind '"\C-n":"n\C-m"'
bind '"\C-y":"cpwd\C-m"'
bind '"\C-p":"cd "$OLDPWD"\C-m"' # Hint: You could also type '~-'

# FM prompt appearance

if [[ $(whoami) == 'root' ]]; then
    # So that the user knows if they have root privileges:
    PS1="\[\e[0;32\]mf\[m\e[m\] \[\e[0;31m\]root\[\e[m\] \[\e[0;34m\]\w \[\e[m\]\[\e[0;31m\]> \[\e[m\]"
else
    PS1="\[\e[0;32\]mf\[m\e[m\] \[\e[0;34m\]\w \[\e[m\]\[\e[0;31m\]> \[\e[m\]"
fi

# Functions

# Usage
fmhelp () {
    echo "hide - toggle hidden (hidden by default)
ls - lists contents of dir(s) passed in args.
lsd - list directories
cd - changed to directory \$1
cp \$@ \$2 - copies file from \$1 to \$2
mv \$@ \$2 - moves file from \$1 to \$2
rm \$@ - deletes \$@
sc \$1 \$2 - make a shortcut called \$1 pointing to \$2. If no \$2 is passed, it is evaluated as \$PWD
cpwd - copy current working directory
.., ..., .... - cd .. etc.
o \$1 - opens \$1 with xdg-open
hm - how many files are in the current directory
details - show file details (ls -lh)
fmhelp - this help menu
n - Intelligent guess of the next dir you wish to cd to. Last $1 in open, list, or makedir; last argument in copy or move; pwd before a cd
~- - BASH shortcut for \$OLDPWD

img - feh frontend with the following usage:
      img -t \$2 - views the dirs/images specified in \$2..\$n as clickable thumbnails
      img -s \$2 \$3 - views the images specified in \$3..\$n as a slideshow with a slide change speed of \$2 seconds
      img \$@ - views the dirs/images specified

Shortkeys:

Ctrl-f - mkdir
Ctrl-h - hide
Ctrl-l - ls
Ctrl-n - cd \$n
Ctrl-o - details
Ctrl-p - cd \$OLDPWD
Ctrl-y - cpwd
Ctrl-u - clear line # urxvt default"
}

# Toggle display hidden files
# If $showHidden is 1, hidden files are shown
hide () {
    showHidden=$(( 1 - $showHidden ))
    list
}

# Toggle display file details
# If $showDetails is 1, file details are shown
details () {
    showDetails=$(( 1 - $showDetails ))
    list
}


# ls
listToggle () {
    if [[ $showHidden == 1 && $showDetails == 1 ]]; then
        ls -C --color -A -lh "$dir"
    elif [[ $showHidden == 1 && $showDetails == 0 ]]; then
        ls -C --color -A "$dir"
    elif [[ $showHidden == 0 && $showDetails == 1 ]]; then
        ls -C --color -lh "$dir"
    else
        ls -C --color "$dir"
    fi
}

list () {
    clear # Unclutter the screen

    # List pwd if no $1
    if [[ $@ == "" ]]; then
        set '.'
    fi

    # List multiple folders:
    for dir in "$@"
    do
        listToggle
    done

    n="$1" # See 'n' in fmhelp
}

# use feh to view thumbnails/images/slideshow

img () {

    case "$1" in
       -t)       nohup feh --thumbnails "${@:2}" --thumb-height 120 --thumb-width 120 -S filename -d --cache-thumbnails -B black > /dev/null 2>&1 & ;;
       -s)       nohup feh "${@:3}" -S filename -d -B black --slideshow-delay "$2" > /dev/null 2>&1 & ;;
       *)        nohup feh "$@" -S filename -d -B black > /dev/null 2>&1 & ;;
    esac

    list
}

# cp
copy () {
    if [[ $showHidden == 1 ]]; then
        pycp --interactive --all "$@"
    else
        pycp --interactive "$@"
    fi

    list
    n="${@:(-1)}" # n is the last argument (where stuff is moved to)
}

# mv
move () {
    if [[ $showHidden == 1 ]]; then
        pymv --interactive --all "$@"
    else
        pymv --interactive "$@"
    fi

    list
    n="${@:(-1)}"
}

makedir () {
     if [[ $1 == "" ]]; then
         read -e n
         set "$n"
     fi

     if mkdir -- "$1"; then
         list # Update pwd to show new dir(s) that have been made.
         n="$1"
     fi
}

# rm
remove () {
     rm -rfI "$@"
     list
}

# open files
o () {
    # To use xdg-open
    #nohup xdg-open "$1" > /dev/null 2>&1 &

    if [ -f "$1" ] ; then
       case "$1" in
       *.tar.bz2)   tar xjf "$1"    ;;
       *.tar.gz)    tar xzf "$1"    ;;
       *.bz2)       bunzip2 "$1"    ;;
       *.rar)       rar x "$1"      ;;
       *.gz)        gunzip "$1"     ;;
       *.tar)       tar xf "$1"     ;;
       *.tbz2)      tar xjf "$1"    ;;
       *.tgz)       tar xzf "$1"    ;;
       *.zip)       unzip "$1"      ;;
       *.Z)         uncompress "$1" ;;
       *.7z)        7z x "$1"       ;;
       *.pdf)       nohup zathura "$1" > /dev/null 2>&1 &     ;;
       *.html)      nohup luakit "$1" > /dev/null 2>&1 &      ;;
       *.blend)     nohup blender "$1" > /dev/null 2>&1 &     ;;
       *.avi)       nohup mplayer "$1"  ;;
       *.wmv)       nohup mplayer "$1"  ;;
       *.rmvb)      nohup mplayer "$1"  ;;
       *.mp3)       nohup urxvtc -si -sw -sh 30 -e mplayer "$1" > /dev/null 2>&1 &     ;;
       *.flv)       nohup mplayer "$1"  ;;
       *.mp4)       nohup mplayer "$1"  ;;
       *.ogg)       nohup urxvt -si -sw -sh 30 -e mplayer "$1" > /dev/null 2>&1 &      ;;
       *.wav)       nohup audacity "$1" > /dev/null 2>&1 &    ;;
       *.jpg)       img "$1"        ;;
       *.jpeg)      img "$1"        ;;
       *.JPG)       img "$1"        ;;
       *.png)       img "$1"        ;;
       *.gif)       nohup gpicview "$1" > /dev/null 2>&1 &    ;;
       *)           nohup urxvt -si -sw -sh 30 -e vim "$1" > /dev/null 2>&1 &          ;;
       esac
    else
        echo "'$1' is not a valid file"
    fi

    n="$1"
}

# Add shortcuts

makeShortcut () {
    if [[ $2 == "" ]]; then
        set $1 .
    fi

    echo ""$1"=\""$2"\"
    alias "$1"='cd \""$2"\"'
         " >> ~/.config/fm/shortcuts

    source ~/.config/fm/shortcuts
}

# Copy pwd to clipboard

cpwd () {
    echo \"$(pwd)\" | xclip
}

# List directories

lsd () {
    ls -F "$@" | grep \/$
}

# Command aliases

alias mv="move"
alias sc="makeShortcut"
alias cp="copy"
alias ls="list"
alias rm="remove"
alias mkdir="makedir"
alias hm="ls -l . | egrep -c '^-'"

list # ls when fm starts