Mercurial > repos > shellac > sam_consensus_v3
annotate env/lib/python3.9/site-packages/argcomplete/_check_module.py @ 0:4f3585e2f14b draft default tip
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
author | shellac |
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date | Mon, 22 Mar 2021 18:12:50 +0000 |
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1 """ |
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2 Utility for locating a module (or package's __main__.py) with a given name |
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3 and verifying it contains the PYTHON_ARGCOMPLETE_OK marker. |
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4 |
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5 The module name should be specified in a form usable with `python -m`. |
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6 |
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7 Intended to be invoked by argcomplete's global completion function. |
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8 """ |
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9 import os |
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10 import sys |
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11 import tokenize |
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12 |
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13 try: |
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14 from importlib.util import find_spec |
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15 except ImportError: |
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16 from collections import namedtuple |
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17 from imp import find_module |
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18 |
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19 ModuleSpec = namedtuple( |
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20 'ModuleSpec', ['origin', 'has_location', 'submodule_search_locations']) |
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21 |
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22 def find_spec(name): |
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23 """Minimal implementation as required by `find`.""" |
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24 try: |
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25 f, path, _ = find_module(name) |
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26 except ImportError: |
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27 return None |
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28 has_location = path is not None |
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29 if f is None: |
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30 return ModuleSpec(None, has_location, [path]) |
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31 f.close() |
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32 return ModuleSpec(path, has_location, None) |
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33 |
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34 |
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35 class ArgcompleteMarkerNotFound(RuntimeError): |
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36 pass |
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37 |
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38 |
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39 def find(name, return_package=False): |
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40 names = name.split('.') |
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41 spec = find_spec(names[0]) |
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42 if spec is None: |
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43 raise ArgcompleteMarkerNotFound( |
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44 'no module named "{}"'.format(names[0])) |
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45 if not spec.has_location: |
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46 raise ArgcompleteMarkerNotFound('cannot locate file') |
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47 if spec.submodule_search_locations is None: |
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48 if len(names) != 1: |
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49 raise ArgcompleteMarkerNotFound( |
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50 '{} is not a package'.format(names[0])) |
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51 return spec.origin |
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52 if len(spec.submodule_search_locations) != 1: |
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53 raise ArgcompleteMarkerNotFound('expecting one search location') |
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54 path = os.path.join(spec.submodule_search_locations[0], *names[1:]) |
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55 if os.path.isdir(path): |
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56 filename = '__main__.py' |
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57 if return_package: |
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58 filename = '__init__.py' |
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59 return os.path.join(path, filename) |
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60 else: |
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61 return path + '.py' |
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62 |
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63 |
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64 def main(): |
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65 try: |
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66 name = sys.argv[1] |
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67 except IndexError: |
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68 raise ArgcompleteMarkerNotFound('missing argument on the command line') |
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69 |
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70 filename = find(name) |
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71 if hasattr(tokenize, 'open'): |
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72 open_func = tokenize.open |
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73 else: |
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74 open_func = open |
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75 |
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76 try: |
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77 fp = open_func(filename) |
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78 except OSError: |
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79 raise ArgcompleteMarkerNotFound('cannot open file') |
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80 |
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81 with fp: |
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82 head = fp.read(1024) |
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83 |
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84 if 'PYTHON_ARGCOMPLETE_OK' not in head: |
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85 raise ArgcompleteMarkerNotFound('marker not found') |
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86 |
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87 |
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88 if __name__ == '__main__': |
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89 try: |
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90 main() |
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91 except ArgcompleteMarkerNotFound as e: |
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92 sys.exit(e) |