import sys, os
import vars

def log_(s):
    sys.stdout.flush()
    if vars.DEBUG_PIDS:
        sys.stderr.write('%d %s' % (os.getpid(), s))
    else:
        sys.stderr.write(s)
    sys.stderr.flush()


def _clog(s):
    log_('\x1b[32mredo  %s\x1b[1m%s\x1b[m' % (vars.DEPTH, s))
def _bwlog(s):
    log_('redo  %s%s' % (vars.DEPTH, s))

def _cerr(s):
    log_('\x1b[31mredo: %s\x1b[1m%s\x1b[m' % (vars.DEPTH, s))
def _bwerr(s):
    log_('redo: %s%s' % (vars.DEPTH, s))

def _cwarn(s):
    log_('\x1b[33mredo: %s\x1b[1m%s\x1b[m' % (vars.DEPTH, s))
def _bwwarn(s):
    log_('redo: %s%s' % (vars.DEPTH, s))


if os.isatty(2):
    log = _clog
    err = _cerr
    warn = _cwarn
else:
    log = _bwlog
    err = _bwerr
    warn = _bwwarn


def debug(s):
    if vars.DEBUG >= 1:
        log_('redo: %s%s' % (vars.DEPTH, s))
def debug2(s):
    if vars.DEBUG >= 2:
        log_('redo: %s%s' % (vars.DEPTH, s))
def debug3(s):
    if vars.DEBUG >= 3:
        log_('redo: %s%s' % (vars.DEPTH, s))