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add support for JSON Lines format in 'target' #24

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add support for JSON Lines format in 'target' #24

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062bedb
add support for JSON Lines format in 'target'
apalala May 20, 2018
fdf4354
fix JSONDecodeError not available in py27
apalala May 20, 2018
5e053fb
catch json.loads() exceptions with ValueError
apalala Jun 10, 2018
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18 changes: 14 additions & 4 deletions glom/cli.py
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Original file line number Diff line number Diff line change
Expand Up @@ -35,11 +35,12 @@
import sys
import json

from face import Command, Flag, face_middleware, PosArgSpec, PosArgDisplay
from face import Command, face_middleware, PosArgSpec
from face.command import CommandLineError

from glom import glom, Path, GlomError, Inspect


def glom_cli(target, spec, indent, debug, inspect):
"""Command-line interface to the glom library, providing nested data
access and data restructuring with the power of Python.
Expand Down Expand Up @@ -146,12 +147,21 @@ def mw_get_target(next_, posargs_, target_file, target_format, spec_file, spec_f

if not target_text:
target = {}
elif target_format == 'python':
if target_text[0] not in ('"', "'", "[", "{", "("):
# intention: handle trivial path access, assume string
spec_text = repr(spec_text)
target = ast.literal_eval(target_text)
elif target_format == 'json':
try:
target = json.loads(target_text)
except Exception as e:
try:
target = json.loads(target_text)
except ValueError:
# intention: handle JSON Lines (.jsonl) format
target = [json.loads(line) for line in target_text.splitlines()]
except ValueError as e:
_error('could not load target data, got: %s' % e)
else:
_error('expected spec-format to be one of python or json')
_error('expected target format to be one of python or json')

return next_(spec=spec, target=target)