fabio.pilatusimage — FabIO 0.1.3 documentation

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# Source code for fabio.pilatusimage

    #!/usr/bin/env python
    #coding: utf8
    """

    Authors:
    ........
    * Henning O. Sorensen & Erik Knudsen:
      Center for Fundamental Research: Metal Structures in Four Dimensions;
      Risoe National Laboratory;
      Frederiksborgvej 399;
      DK-4000 Roskilde;
      email:erik.knudsen@risoe.dk
    * Jon Wright:
      European Synchrotron Radiation Facility;
      Grenoble (France)

    """

    # Base this on the tifimage (as Pilatus is tiff with a
    # tiff header

    from fabio.tifimage import tifimage

    class pilatusimage(tifimage):
        """ Read in Pilatus format, also
            pilatus images, including header info """

        def _readheader(self, infile):
            """
            Parser based approach
            Gets all entries
            """

            self.header = {}

    #        infile = open(infile)
            hstr = infile.read(4096)
            # well not very pretty - but seems to find start of
            # header information
            if (hstr.find('# ') == -1):
                return self.header

            hstr = hstr[hstr.index('# '):]
            hstr = hstr[:hstr.index('\x00')]
            hstr = hstr.split('#')
            go_on = True
            while go_on:
                try:
                    hstr.remove('')
                except Exception:
                    go_on = False

            for line in hstr:
                line = line[1:line.index('\r\n')]
                if line.find(':') > -1:
                    dump = line.split(':')
                    self.header[dump[0]] = dump[1]
                elif line.find('=') > -1:
                    dump = line.split('=')
                    self.header[dump[0]] = dump[1]
                elif line.find(' ') > -1:
                    i = line.find(' ')
                    self.header[line[:i]] = line[i:]
                elif line.find(',') > -1:
                    dump = line.split(',')
                    self.header[dump[0]] = dump[1]

            return self.header

        def _read(self, fname):
            """
            inherited from tifimage
            ... a Pilatus image *is a* tif image
            just with a header
            """
            return tifimage.read(self, fname)

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