/usr/lib/python2.7/dist-packages/rdflib/tools/rdfpipe.py is in python-rdflib 4.2.1-2.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 | #!/usr/bin/env python
# -*- coding: UTF-8 -*-
"""
A commandline tool for parsing RDF in different formats and serializing the
resulting graph to a chosen format.
"""
import sys
from optparse import OptionParser
import logging
import rdflib
from rdflib import plugin
from rdflib.store import Store
from rdflib.graph import ConjunctiveGraph
from rdflib.namespace import RDF, RDFS, OWL, XSD
from rdflib.parser import Parser
from rdflib.serializer import Serializer
from rdflib.util import guess_format
from rdflib.py3compat import PY3
DEFAULT_INPUT_FORMAT = 'xml'
DEFAULT_OUTPUT_FORMAT = 'n3'
def parse_and_serialize(input_files, input_format, guess,
outfile, output_format, ns_bindings,
store_conn="", store_type=None):
if store_type:
store = plugin.get(store_type, Store)()
store.open(store_conn)
graph = ConjunctiveGraph(store)
else:
store = None
graph = ConjunctiveGraph()
for prefix, uri in ns_bindings.items():
graph.namespace_manager.bind(prefix, uri, override=False)
for fpath in input_files:
use_format, kws = _format_and_kws(input_format)
if fpath == '-':
fpath = sys.stdin
elif not input_format and guess:
use_format = guess_format(fpath) or DEFAULT_INPUT_FORMAT
graph.parse(fpath, format=use_format, **kws)
if outfile:
output_format, kws = _format_and_kws(output_format)
kws.setdefault('base', None)
graph.serialize(destination=outfile, format=output_format, **kws)
if store:
store.rollback()
def _format_and_kws(fmt):
"""
>>> _format_and_kws("fmt")
('fmt', {})
>>> _format_and_kws("fmt:+a")
('fmt', {'a': True})
>>> _format_and_kws("fmt:a")
('fmt', {'a': True})
>>> _format_and_kws("fmt:+a,-b") #doctest: +SKIP
('fmt', {'a': True, 'b': False})
>>> _format_and_kws("fmt:c=d")
('fmt', {'c': 'd'})
>>> _format_and_kws("fmt:a=b:c")
('fmt', {'a': 'b:c'})
"""
fmt, kws = fmt, {}
if fmt and ':' in fmt:
fmt, kwrepr = fmt.split(':', 1)
for kw in kwrepr.split(','):
if '=' in kw:
k, v = kw.split('=')
kws[k] = v
elif kw.startswith('-'):
kws[kw[1:]] = False
elif kw.startswith('+'):
kws[kw[1:]] = True
else: # same as "+"
kws[kw] = True
return fmt, kws
def make_option_parser():
parser_names = _get_plugin_names(Parser)
serializer_names = _get_plugin_names(Serializer)
kw_example = "FORMAT:(+)KW1,-KW2,KW3=VALUE"
oparser = OptionParser(
"%prog [-h] [-i INPUT_FORMAT] [-o OUTPUT_FORMAT] " +
"[--ns=PFX=NS ...] [-] [FILE ...]",
description=__doc__.strip() + (
" Reads file system paths, URLs or from stdin if '-' is given."
" The result is serialized to stdout."),
version="%prog " + "(using rdflib %s)" % rdflib.__version__)
oparser.add_option(
'-i', '--input-format',
type=str, # default=DEFAULT_INPUT_FORMAT,
help="Format of the input document(s)."
" Available input formats are: %s." % parser_names +
" If no format is given, it will be " +
"guessed from the file name extension." +
" Keywords to parser can be given after format like: %s." % kw_example,
metavar="INPUT_FORMAT")
oparser.add_option(
'-o', '--output-format',
type=str, default=DEFAULT_OUTPUT_FORMAT,
help="Format of the graph serialization."
" Available output formats are: %s."
% serializer_names +
" Default format is: '%default'." +
" Keywords to serializer can be given after format like: %s." %
kw_example,
metavar="OUTPUT_FORMAT")
oparser.add_option(
'--ns',
action="append", type=str,
help="Register a namespace binding (QName prefix to a base URI). "
"This can be used more than once.",
metavar="PREFIX=NAMESPACE")
oparser.add_option(
'--no-guess', dest='guess',
action='store_false', default=True,
help="Don't guess format based on file suffix.")
oparser.add_option(
'--no-out',
action='store_true', default=False,
help="Don't output the resulting graph " +
"(useful for checking validity of input).")
oparser.add_option(
'-w', '--warn',
action='store_true', default=False,
help="Output warnings to stderr (by default only critical errors).")
return oparser
_get_plugin_names = lambda kind: ", ".join(
p.name for p in plugin.plugins(kind=kind))
def main():
oparser = make_option_parser()
opts, args = oparser.parse_args()
if len(args) < 1:
oparser.print_usage()
oparser.exit()
if opts.warn:
loglevel = logging.WARNING
else:
loglevel = logging.CRITICAL
logging.basicConfig(level=loglevel)
ns_bindings = {}
if opts.ns:
for ns_kw in opts.ns:
pfx, uri = ns_kw.split('=')
ns_bindings[pfx] = uri
outfile = sys.stdout
if PY3:
outfile = sys.stdout.buffer
if opts.no_out:
outfile = None
parse_and_serialize(args, opts.input_format, opts.guess,
outfile, opts.output_format, ns_bindings)
if __name__ == "__main__":
main()
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