def test_data_check_path( self, testnr, pathexpr, expected ):
"""
data-check-path should evalue path expression and return data
"""
infile = StringIO('{"foo":[{"bar":null}]}')
ctx = confparse.Values(dict(
opts=util.get_opts(jsotk.__doc__, argv=['path', '', pathexpr])
))
self.assertEquals( ctx.opts.args.pathexpr, pathexpr )
is_new = jsotk_lib.data_check_path( ctx, infile )
self.assert_( is_new == expected, testnr )
def H_path(ctx):
"""
Return data at path. Return 1 if path is not found. Use with ``--is-*``
opts to OR-test for type or exit 2. To check if a path could be inserted,
use ``--is-new``. This overrules not-found errors, but only if the path
could be inserted. When any existing
element does not match a list or object type it also exits non-zero.
"""
infile, outfile = get_src_dest_defaults(ctx)
data = None
try:
data = data_at_path(ctx, infile)
infile.close()
except (Exception) as err:
if not ctx.opts.flags.is_new:
if not ctx.opts.flags.quiet:
tb = traceback.format_exc()
sys.stderr.write(tb)
sys.stderr.write("Error: getting %r: %r\n" % (
ctx.opts.args.pathexpr, err ))
return 1
res = [ ]
for tp in "new list obj int str bool".split(" "):
if ctx.opts.flags["is_%s" % tp]:
# FIXME: print(maptype(tp))
if tp == "new":
infile, outfile = get_src_dest_defaults(ctx)
if not data and data_check_path(ctx, infile):
res += [ 0 ]
elif isinstance(data, maptype(tp)):
res += [ 0 ]
else:
res += [ 1 ]
if res and min(res) == 0:
res = [ 0 ]
if not ctx.opts.flags.quiet:
res += [ stdout_data( data, ctx, outf=outfile ) ]
return max(res)
