Tiltfile

def dotenv(fn=".env", verbose=False, showValues=False):

    # Check if file exists
    if not os.path.exists(fn):
        warn("Environment variables file not found: '%s'" % fn)
        return

    if verbose:
        print("Loading environment variables from file: '%s'" % fn)

    # Read file
    f = read_file(fn)

    # Split lines
    lines = str(f).splitlines()

    # Parse lines
    for lineNumber in range(len(lines)):

        # Set line by line number
        line = lines[lineNumber]

        # Skip comments
        if line.startswith("#"):
            continue # skip comments
            # TODO: add support for comments at the end of the line

        # Split key and value
        v = line.split(
            "=",    # sep (separator)
            1       # maxsplit (maximum number of splits to do)
        )

        # Check if key and value are present
        if len(v) < 2:
            if len(line) > 0:
                fail("Invalid format for dotenv file: '%s' in '%s:%s'" % (line, fn, lineNumber+1))
            continue # skip empty lines

        # Remove whitespace around the varible name
        varName = v[0].strip()

        # Remove whitespace around the varible value
        varValue = v[1].strip()

        # if varValue starts and ends with quotes, remove them
        if varValue.startswith('"') and varValue.endswith('"'):
            varValue = varValue[1:-1]
        elif varValue.startswith("'") and varValue.endswith("'"):
            varValue = varValue[1:-1]

        if verbose:
            # Print if key is valid
            if showValues:
                print("Loading environment variable: %s=%s" % (varName, varValue))
            else:
                print("Loading environment variable: %s" % (varName))

        # Set environment variable
        os.putenv(varName, varValue)