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Add a JSON export option #114

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Add a JSON export option #114

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18 changes: 18 additions & 0 deletions scholar.py
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Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,8 @@
# ChangeLog
# ---------
#
# 2.12 Added a JSON export option (author: <[email protected]>).
#
# 2.11 The Scholar site seems to have become more picky about the
# number of results requested. The default of 20 in scholar.py
# could cause HTTP 503 responses. scholar.py now doesn't request
Expand Down Expand Up @@ -166,6 +168,7 @@
import re
import sys
import warnings
import json

try:
# Try importing for Python 3
Expand Down Expand Up @@ -347,6 +350,9 @@ def as_csv(self, header=False, sep='|'):
res.append(sep.join([unicode(self.attrs[key][0]) for key in keys]))
return '\n'.join(res)

def as_json(self):
return json.dumps({key:self.attrs[key][0] for key in self.attrs})

def as_citation(self):
"""
Reports the article in a standard citation format. This works only
Expand Down Expand Up @@ -1139,6 +1145,14 @@ def csv(querier, header=False, sep='|'):
print(encode(result))
header = False

def jsonq(querier):
articles = querier.articles
res=[]
for art in articles:
result = art.as_json()
res.append(encode(result))
print("[\n",",\n".join(res),"\n]")

def citation_export(querier):
articles = querier.articles
for art in articles:
Expand Down Expand Up @@ -1203,6 +1217,8 @@ def main():
help='Print article data in CSV form (separator is "|")')
group.add_option('--csv-header', action='store_true',
help='Like --csv, but print header with column names')
group.add_option('--json', action='store_true',
help='Print article data in JSON form')
group.add_option('--citation', metavar='FORMAT', default=None,
help='Print article details in standard citation format. Argument Must be one of "bt" (BibTeX), "en" (EndNote), "rm" (RefMan), or "rw" (RefWorks).')
parser.add_option_group(group)
Expand Down Expand Up @@ -1294,6 +1310,8 @@ def main():

if options.csv:
csv(querier)
elif options.json:
jsonq(querier)
elif options.csv_header:
csv(querier, header=True)
elif options.citation is not None:
Expand Down