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annotate env/lib/python3.7/site-packages/rdflib/extras/cmdlineutils.py @ 3:758bc20232e8 draft

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"planemo upload commit 2a0fe2cc28b09e101d37293e53e82f61762262ec"
author shellac
date Thu, 14 May 2020 16:20:52 -0400
parents 26e78fe6e8c4
children
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1 import sys
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2 import time
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3 import getopt
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4 import rdflib
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5 import codecs
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6
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7 from rdflib.util import guess_format
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8
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9
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10 def _help():
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11 sys.stderr.write("""
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12 program.py [-f <format>] [-o <output>] [files...]
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13 Read RDF files given on STDOUT - does something to the resulting graph
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14 If no files are given, read from stdin
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15 -o specifies file for output, if not given stdout is used
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16 -f specifies parser to use, if not given it is guessed from extension
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17
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18 """)
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20
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21 def main(target, _help=_help, options="", stdin=True):
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22 """
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23 A main function for tools that read RDF from files given on commandline
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24 or from STDIN (if stdin parameter is true)
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25 """
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26
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27 args, files = getopt.getopt(sys.argv[1:], "hf:o:" + options)
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28 dargs = dict(args)
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29
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30 if "-h" in dargs:
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31 _help()
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32 sys.exit(-1)
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33
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34 g = rdflib.Graph()
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35
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36 if "-f" in dargs:
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37 f = dargs["-f"]
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38 else:
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39 f = None
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40
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41 if "-o" in dargs:
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42 sys.stderr.write("Output to %s\n" % dargs["-o"])
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43 out = codecs.open(dargs["-o"], "w", "utf-8")
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44 else:
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45 out = sys.stdout
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46
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47 start = time.time()
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48 if len(files) == 0 and stdin:
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49 sys.stderr.write("Reading from stdin as %s..." % f)
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50 g.load(sys.stdin, format=f)
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51 sys.stderr.write("[done]\n")
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52 else:
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53 size = 0
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54 for x in files:
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55 if f is None:
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56 f = guess_format(x)
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57 start1 = time.time()
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58 sys.stderr.write("Loading %s as %s... " % (x, f))
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59 g.load(x, format=f)
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60 sys.stderr.write("done.\t(%d triples\t%.2f seconds)\n" %
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61 (len(g) - size, time.time() - start1))
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62 size = len(g)
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63
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64 sys.stderr.write("Loaded a total of %d triples in %.2f seconds.\n" %
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65 (len(g), time.time() - start))
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66
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67 target(g, out, args)