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1# This file is part of daf_butler. 

2# 

3# Developed for the LSST Data Management System. 

4# This product includes software developed by the LSST Project 

5# (http://www.lsst.org). 

6# See the COPYRIGHT file at the top-level directory of this distribution 

7# for details of code ownership. 

8# 

9# This program is free software: you can redistribute it and/or modify 

10# it under the terms of the GNU General Public License as published by 

11# the Free Software Foundation, either version 3 of the License, or 

12# (at your option) any later version. 

13# 

14# This program is distributed in the hope that it will be useful, 

15# but WITHOUT ANY WARRANTY; without even the implied warranty of 

16# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 

17# GNU General Public License for more details. 

18# 

19# You should have received a copy of the GNU General Public License 

20# along with this program. If not, see <http://www.gnu.org/licenses/>. 

21 

22__all__ = ("FitsCatalogFormatter", ) 

23 

24import os.path 

25 

26from lsst.daf.butler.formatters.fileFormatter import FileFormatter 

27 

28 

29class FitsCatalogFormatter(FileFormatter): 

30 """Interface for reading and writing catalogs to and from FITS files. 

31 """ 

32 extension = ".fits" 

33 

34 def _readFile(self, path, pytype): 

35 """Read a file from the path in FITS format. 

36 

37 Parameters 

38 ---------- 

39 path : `str` 

40 Path to use to open the file. 

41 pytype : `class` 

42 Class to use to read the FITS file. 

43 

44 Returns 

45 ------- 

46 data : `object` 

47 Instance of class `pytype` read from FITS file. None 

48 if the file could not be opened. 

49 """ 

50 if not os.path.exists(path): 50 ↛ 51line 50 didn't jump to line 51, because the condition on line 50 was never true

51 return None 

52 

53 return pytype.readFits(path) 

54 

55 def _writeFile(self, inMemoryDataset): 

56 """Write the in memory dataset to file on disk. 

57 

58 Parameters 

59 ---------- 

60 inMemoryDataset : `object` 

61 Object to serialize. 

62 

63 Raises 

64 ------ 

65 Exception 

66 The file could not be written. 

67 """ 

68 inMemoryDataset.writeFits(self.fileDescriptor.location.path)