bb_def_shell_bits.py

def shell_get_vars(d, bbvars):
    """Return var/value pairs for use in a shell while loop.

    Example usage:

    while read -r var value; do
    done <<END
    $'{@shell_get_vars(d, 'FOO BAR')}
    END
    """
    if isinstance(bbvars, str):
        bbvars = bbvars.split()
    lines = []
    for var in bbvars:
        lines.append('{0} {1}\n'.format(var, d.getVar(var, True)))
    return ''.join(lines)

def shell_vars(d, bbvars, indent='    '):
    """Return var=value lines to set them as shell variables."""
    import subprocess
    if isinstance(bbvars, str):
        bbvars = bbvars.split()
    lines = []
    for var in bbvars:
        value = d.getVar(var, True)
        lines.append('{0}{1}={2}\n'.format(indent, var, subprocess.list2cmdline([value])))
    return ''.join(lines)[len(indent):]