casa6

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import os

from stat import S_ISDIR, ST_MODE

​

from casatools import image

from casatools import ctsys

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from .. import casalog

from . import cvt

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locimage = image

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def _getvestr():

    return 'version: ' + ctsys.version_info( )

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def write_image_history(myia, tname, param_names, param_vals, myclog=None):

    """

    Update image attached to image tool with the parameters that task tname was called with.

​

    myia - attached image tool or image name (string)

    tname - name of the calling task.

    param_names - list of parameter names.

    param_vals - list of parameter values (in the same order as param_names).

    myclog - a casalog instance (optional)

    """

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    param_names = cvt.as_list(param_names)

    param_vals = cvt.as_list(param_vals)

​

    myia_is_string = type(myia) == str

    if myia_is_string:

        if not myia:

            # empty string

            return

        _ia = locimage()

        _ia.open(myia)

    elif not hasattr(myia, 'sethistory'):

        return False

    else:

        _ia = myia

    try:

        if not myclog and hasattr(casalog, 'post'):

            myclog = casalog

    except Exception as instance:

        # There's no logger to complain to, and I don't want to exit

        # just because of that.

        pass

    try:

        vestr = _getvestr()

        _ia.sethistory(tname, vestr)

​

        # Write the arguments.

        s = tname + "("

        n = len(param_names)

        for argnum in range(n):

            s += str(param_names[argnum]) + "="

            val = param_vals[argnum]

            sval = str(val)

            if len(sval) > 300:

                s += "..."

            else:

                if type(val) == str:

                    s += '"'