.bash_helpers

# ~/.bash_aliases

# Extract many compressed files
# (based on https://wiki.archlinux.org/index.php/Bash/Functions)
extract() {
    local c e i

    (($#)) || return

    for i; do
        c=''
        e=1

        if [[ ! -r $i ]]; then
            echo "$0: file is unreadable: \`$i'" >&2
            continue
        fi

        case $i in
            *.t@(gz|lz|xz|b@(2|z?(2))|a@(z|r?(.@(Z|bz?(2)|gz|lzma|xz)))))
                   c=(bsdtar xvf);;
            *.7z)  c=(7z x);;
            *.Z)   c=(uncompress);;
            *.bz2) c=(bunzip2);;
            *.exe) c=(cabextract);;
            *.gz)  c=(gunzip);;
            *.rar) c=(unrar x);;
            *.xz)  c=(unxz);;
            *.zip) c=(unzip);;
            *)     echo "$0: unrecognized file extension: \`$i'" >&2
                   continue;;
        esac

        command "${c[@]}" "$i"
        ((e = e || $?))
    done
    return "$e"
}

# Make cd and ls in a single command
# (based on https://wiki.archlinux.org/index.php/Bash/Functions)
cl() {
  local dir="$1"
  local dir="${dir:=$HOME}"
  if [[ -d "$dir" ]]; then
    cd "$dir" >/dev/null; ls
  else
    echo "bash: cl: $dir: Directory not found"
  fi
}

# Create simple notes to be read later
# (based on https://wiki.archlinux.org/index.php/Bash/Functions)
note () {
    # If file doesn't exist, create it
    if [[ ! -f $HOME/.notes ]]; then
        touch "$HOME/.notes"
    fi

    if ! (($#)); then
        # No arguments, print file
        cat "$HOME/.notes"
    elif [[ "$1" == "-c" ]]; then
        # Clear file
        printf "%s" > "$HOME/.notes"
    else
        # add all arguments to file
        printf "%s\n" "$*" >> "$HOME/.notes"
    fi
}

# Get info of ip address and host
# (based on https://wiki.archlinux.org/index.php/Bash/Functions)
ipif() {
    if grep -P "(([1-9]\d{0,2})\.){3}(?2)" <<< "$1"; then
        curl ipinfo.io/"$1"
    else
        ipawk=($(host "$1" | awk '/address/ { print $NF }'))
        curl ipinfo.io/${ipawk[1]}
    fi
    echo
}

# Make a simple calculation using bc
# (based on https://wiki.archlinux.org/index.php/Bash/Functions)
calc() {
    echo "scale=3;$@" | bc -l
}

# List ANSI escape codes for terminal colors
# (based on http://wiki.bash-hackers.org/scripting/terminalcodes)
ansi_colors() {
    for a in 0 1 4 5 7; do
        echo "a=$a " 
        for (( f=0; f<=9; f++ )) ; do
            for (( b=0; b<=9; b++ )) ; do
                #echo -ne "f=$f b=$b" 
                echo -ne "\\033[${a};3${f};4${b}m"
                echo -ne "\\\\\\\\033[${a};3${f};4${b}m"
                echo -ne "\\033[0m "
            done
            echo
        done
        echo
    done
    echo
}

alias colors="ansi_colors | less -R"

# Make history and grep in a single comamnd
h () {
    if [[ "$1" =~ ^[0-9]*$ ]]; then
        # When providing a number, print N lines
        history $1
    elif [ -n "$2" ] && [[ "$2" =~ ^[0-9]*$ ]]; then
        # For a number + a key, print N lines with 'key'
        history | grep $1 | tail -n $2 | grep $1
    else
        # For just a key, prin all entries to it
        history | grep $1
    fi
}