def difference(observatory, old_file, new_file, *args, **keys):
"""Difference different kinds of CRDS files (mappings, FITS references, etc.)
named `old_file` and `new_file` against one another and print out the results
on stdout.
Returns:
0 no differences
1 some differences
2 errors in subshells
"""
filetype = config.filetype(old_file)
differs = {
"mapping" : MappingDifferencer,
"asdf" : AsdfDifferencer,
"fits" : FitsDifferencer,
"text" : TextDifferencer,
"yaml" : TextDifferencer,
"json" : JsonDifferencer,
}
differ_class = differs.get(filetype, None)
if differ_class is None:
log.warning("Cannot difference file of type", repr(filetype), ":", repr(old_file), repr(new_file))
status = 2 # arguably, this should be an error not a warning. wary of changing now.
else:
differ = differ_class(observatory, old_file, new_file, *args, **keys)
status = differ.difference()
return status
def difference(observatory, old_file, new_file, *args, **keys):
"""Difference different kinds of CRDS files (mappings, FITS references, etc.)
named `old_file` and `new_file` against one another and print out the results
on stdout.
Returns:
0 no differences
1 some differences
2 errors in subshells
"""
filetype = config.filetype(old_file)
differs = {
"mapping" : MappingDifferencer,
"asdf" : AsdfDifferencer,
"fits" : FitsDifferencer,
"text" : TextDifferencer,
"yaml" : TextDifferencer,
"json" : JsonDifferencer,
}
differ_class = differs.get(filetype, None)
if differ_class is None:
log.warning("Cannot difference file of type", repr(filetype), ":", repr(old_file), repr(new_file))
status = 2 # arguably, this should be an error not a warning. wary of changing now.
else:
differ = differ_class(observatory, old_file, new_file, *args, **keys)
status = differ.difference()
return status
def get_filetype(filepath, original_name=None):
"""Determine file type from `original_name` if possible, otherwise attempt to
idenitfy based on file contents.
"""
if original_name is None:
original_name = os.path.basename(filepath)
# Fast extension-based type determination
filetype = config.filetype(original_name)
if filetype != "unknown":
return filetype
with open(filepath, "rb") as handle:
first_5 = str(handle.read(5).decode('utf-8'))
if first_5 == "#ASDF":
return "asdf"
elif first_5 == "SIMPL":
first_81 = first_5 + handle.read(76).decode('utf-8')
if first_81[-1] == '\n':
all_chars = first_81 + handle.read().decode('utf-8')
lines = all_chars.splitlines()
lengths = { len(line) for line in lines }
if len(lengths) == 1 and 80 in lengths:
return 'geis'
else:
return 'fits'
else:
return "fits"
try:
with open(filepath) as handle:
import json
json.load(handle)
return "json"
except Exception:
pass
try:
with open(filepath) as handle:
import yaml
yaml.safe_load(handle)
return "yaml"
except Exception:
pass
return "unknown"
def get_filetype(filepath, original_name=None):
"""Determine file type from `original_name` if possible, otherwise attempt to
idenitfy based on file contents.
"""
if original_name is None:
original_name = os.path.basename(filepath)
# Fast extension-based type determination
filetype = config.filetype(original_name)
if filetype != "unknown":
return filetype
with open(filepath, "rb") as handle:
first_5 = str(handle.read(5).decode('utf-8'))
if first_5 == "#ASDF":
return "asdf"
elif first_5 == "SIMPL":
first_81 = first_5 + handle.read(76).decode('utf-8')
if first_81[-1] == '\n':
all_chars = first_81 + handle.read().decode('utf-8')
lines = all_chars.splitlines()
lengths = { len(line) for line in lines }
if len(lengths) == 1 and 80 in lengths:
return 'geis'
else:
return 'fits'
else:
return "fits"
try:
with open(filepath) as handle:
import json
json.load(handle)
return "json"
except Exception:
pass
try:
with open(filepath) as handle:
import yaml
yaml.safe_load(handle)
return "yaml"
except Exception:
pass
return "unknown"
def is_dataset(name):
"""Returns True IFF `name` is plausible as a dataset. Not a guarantee."""
return config.filetype(name) in ["fits", "asdf", "geis"]
def is_dataset(name):
"""Returns True IFF `name` is plausible as a dataset. Not a guarantee."""
return config.filetype(name) in ["fits", "asdf", "geis"]
