app/django/utils/simplejson/tool.py
author Daniel Hans <Daniel.M.Hans@gmail.com>
Tue, 03 Nov 2009 00:50:23 +0100
changeset 3075 1e78db95e38a
parent 323 ff1a9aa48cfd
permissions -rw-r--r--
getListContentForData function added to lists helper. It allows to manually set a list of entities which is to be displayed on the view. Previously, the only function was getListContent, but it retrived data on its own by a single query. The new function can be useful whenever it is impossible or very awkward to obtain entities in such a way (for example more sophisticated SQL statements). Additionally, the getListContent function is reconstructed so that it collects the data first and then calls getListContentForData.

r"""
Using simplejson from the shell to validate and
pretty-print::
    
    $ echo '{"json":"obj"}' | python -msimplejson
    {
        "json": "obj"
    }
    $ echo '{ 1.2:3.4}' | python -msimplejson
    Expecting property name: line 1 column 2 (char 2)

Note that the JSON produced by this module's default settings
is a subset of YAML, so it may be used as a serializer for that as well.
"""
import django.utils.simplejson

#
# Pretty printer:
#     curl http://mochikit.com/examples/ajax_tables/domains.json | python -msimplejson.tool
#

def main():
    import sys
    if len(sys.argv) == 1:
        infile = sys.stdin
        outfile = sys.stdout
    elif len(sys.argv) == 2:
        infile = open(sys.argv[1], 'rb')
        outfile = sys.stdout
    elif len(sys.argv) == 3:
        infile = open(sys.argv[1], 'rb')
        outfile = open(sys.argv[2], 'wb')
    else:
        raise SystemExit("%s [infile [outfile]]" % (sys.argv[0],))
    try:
        obj = simplejson.load(infile)
    except ValueError, e:
        raise SystemExit(e)
    simplejson.dump(obj, outfile, sort_keys=True, indent=4)
    outfile.write('\n')


if __name__ == '__main__':
    main()