shellfirm 0.1.4

`shellfirm` will intercept any risky patterns (default or defined by you) and prompt you a small challenge for double verification, kinda like a captcha for your terminal.
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# Protect yourself from yourself!
# shellfirm will intercept any risky patterns and prompt you a small challenge for double verification.
# `printc` funciton will trigger (as hook event) on any terminal command. the command will pass to `shellfirm` binary for check if 
# the command match match to one of the patters. read more: https://github.com/kaplanelad/shellfirm#how-it-works 


# Checks if shellfirm binary is accessible 
shellfirm --version >/dev/null 2>&1
if [ "$?" != 0 ]; then
    # show this message to the user and don't register to terminal hook
    # we want to show the user that he not protected with `shellfirm`
    echo "`shellfirm` binary is missing. see installation guide: https://github.com/kaplanelad/shellfirm#installation."
    return
fi

function shellfirm-pre-command () {
    if [[ "${1}" == *"shellfirm pre-command"* ]]; then
        return
    fi
    shellfirm pre-command --command "${1}"
}

autoload -Uz add-zsh-hook
add-zsh-hook preexec shellfirm-pre-command