startenv for gnome-terminal

.bashrc

#!/bin/bash

# stub implementation of https://github.com/dragonee/iterm2-startenv for gnome-terminal
# using bash and nodejs
# this code should be put at the end of your .bashrc

# usage:
# put https://github.com/dragonee/iterm2-startenv/blob/master/examples/fullexample.js
# as .startenv.js in your project root directory
# modify it to your needs
# add /.startenv/ pattern to your .gitignore

# only ALLTERMS and TERMS work

run_startenv_cmd() {
    if [ ! -d .startenv ]; then
        mkdir .startenv
    fi

    # check modified dates
    if [ -f .startenv/term.$1.sh ] && [ .startenv/term.$1.sh -nt .startenv.js ]; then
        return
    fi

    node <<EOF > .startenv/term.$1.sh
        ALLTERMS = []

        title = function(title) {
            return 'echo -ne "\\\\033]0;' + title + '\\\\007"'
        }

        require("./.startenv.js");

        for(i = 0; i < ALLTERMS.length; i++) {
            console.log(ALLTERMS[i])
        }

        term_cmds = TERMS[$1]

        if(!Array.isArray(term_cmds)) {
            term_cmds = [term_cmds]
        }

        for(i = 0; i < term_cmds.length; i++) {
            console.log(term_cmds[i])
        }
EOF
}

startenv() {
    if [ ! -f .startenv.js ]; then
        echo "Error: no .startenv.js file is present"
        return
    fi

    terms_count=$(node <<EOF
        title = function(x) {
            return x
        }
    
        config = require("./.startenv.js"); 
    
        console.log(TERMS.length);
EOF
    )

    for ((i=0; i < terms_count; i++)); do
        STARTENV_SHELL="$i" gnome-terminal --tab
    done
}

if [ -n "$STARTENV_SHELL" ]; then
    run_startenv_cmd "$STARTENV_SHELL"
    cat .startenv/term."$STARTENV_SHELL".sh
    . .startenv/term."$STARTENV_SHELL".sh
fi