lsst.pex.config.history Namespace Reference

Classes
class	Color

Functions
def	format (config, name=None, writeSourceLine=True, prefix="", verbose=False)

Function Documentation

format()

def lsst.pex.config.history.format	(		config,
			name = None,
			writeSourceLine = True,
			prefix = "",
			verbose = False
	)

Format the history record for a configuration, or a specific
configuration field.

Parameters
----------
config : `lsst.pex.config.Config`
    A configuration instance.
name : `str`, optional
    The name of a configuration field to specifically format the history
    for. Otherwise the history of all configuration fields is printed.
writeSourceLine : `bool`, optional
    If `True`, prefix each printout line with the code filename and line
    number where the configuration event occurred. Default is `True`.
prefix : `str`, optional
    A prefix for to add to each printout line. This prefix occurs first,
    even before any source line. The default is an empty string.
verbose : `bool`, optional
    Default is `False`.

Definition at line 168 of file history.py.

def format(config, name=None, writeSourceLine=True, prefix="", verbose=False):
    """Format the history record for a configuration, or a specific
    configuration field.

    Parameters
    ----------
    config : `lsst.pex.config.Config`
        A configuration instance.
    name : `str`, optional
        The name of a configuration field to specifically format the history
        for. Otherwise the history of all configuration fields is printed.
    writeSourceLine : `bool`, optional
        If `True`, prefix each printout line with the code filename and line
        number where the configuration event occurred. Default is `True`.
    prefix : `str`, optional
        A prefix for to add to each printout line. This prefix occurs first,
        even before any source line. The default is an empty string.
    verbose : `bool`, optional
        Default is `False`.
    """

    if name is None:
        for i, name in enumerate(config.history.keys()):
            if i > 0:
                print()
            print(format(config, name))

    outputs = []
    for value, stack, label in config.history[name]:
        output = []
        for frame in stack:
            if frame.function in ("__new__", "__set__", "__setattr__", "execfile", "wrapper") or \
                    os.path.split(frame.filename)[1] in ("argparse.py", "argumentParser.py"):
                if not verbose:
                    continue

            line = []
            if writeSourceLine:
                line.append(["%s" % ("%s:%d" % (frame.filename, frame.lineno)), "FILE", ])

            line.append([frame.content, "TEXT", ])
            if False:
                line.append([frame.function, "FUNCTION_NAME", ])

            output.append(line)

        outputs.append([value, output])

    # Find the maximum widths of the value and file:lineNo fields.
    if writeSourceLine:
        sourceLengths = []
        for value, output in outputs:
            sourceLengths.append(max([len(x[0][0]) for x in output]))
        sourceLength = max(sourceLengths)

    valueLength = len(prefix) + max([len(str(value)) for value, output in outputs])

    # Generate the config history content.
    msg = []
    fullname = "%s.%s" % (config._name, name) if config._name is not None else name
    msg.append(_colorize(re.sub(r"^root\.", "", fullname), "NAME"))
    for value, output in outputs:
        line = prefix + _colorize("%-*s" % (valueLength, value), "VALUE") + " "
        for i, vt in enumerate(output):
            if writeSourceLine:
                vt[0][0] = "%-*s" % (sourceLength, vt[0][0])

            output[i] = " ".join([_colorize(v, t) for v, t in vt])

        line += ("\n%*s" % (valueLength + 1, "")).join(output)
        msg.append(line)

    return "\n".join(msg)

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