Merge "Add mkstrip"

    elif _options.format == "pretty":

        print(attr, "=", repr(value))

    elif _options.format == "make":

        print(attr, ":=", value)

        # Trim all spacing to a single space

        print(attr, ":=", _mkstrip(value))

    else:

        fail("bad output format", _options.format)

    """Prints info."""

    print(message)

def _mkstrip(s):

    """Emulates Make's strip.

    That is, removes string's leading and trailing whitespace characters and

    replaces any sequence of whitespace characters with with a single space.

    """

    result = ""

    was_space = False

    for ch in s.strip().elems():

        is_space = ch.isspace()

        if not is_space:

            if was_space:

                result += " "

            result += ch

        was_space = is_space

    return result

def __get_options():

    """Returns struct containing runtime global settings."""

    settings = dict(

    mkinfo = _mkinfo,

    mkerror = _mkerror,

    mkwarning = _mkwarning,

    mkstrip = _mkstrip,

    printvars = _printvars,

    product_configuration = _product_configuration,

    require_artifacts_in_path = _require_artifacts_in_path,

# Copyright 2021 Google LLC

#

# Licensed under the Apache License, Version 2.0 (the "License");

    if expected != actual:

        fail("Expected %s, got %s" % (expected, actual))

# Unit tests for non-trivial runtime functions

assert_eq("", rblf.mkstrip(" \n \t    "))

assert_eq("a b c", rblf.mkstrip("  a b   \n  c \t"))

globals, config = rblf.product_configuration("test/device", init)

assert_eq(