Mercurial > repos > shellac > sam_consensus_v3

annotate env/lib/python3.9/site-packages/planemo/shed/diff.py @ 0:4f3585e2f14b draft default tip

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"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
author shellac
date Mon, 22 Mar 2021 18:12:50 +0000
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Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
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1 """Utilities for calculating effective repository diffs.
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2
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3 Some intelligence is required because the tool shed updates attributes that it
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4 is beneficial to ignore.
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5 """
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6 from __future__ import print_function
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7
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8 import os
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9 import sys
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10 from xml.etree import ElementTree
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11
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12 from planemo.xml import diff
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13
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14
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15 def diff_and_remove(working, label_a, label_b, f):
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16 """Remove tool shed XML files and use a smart XML diff on them.
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17
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18 Return 0 if and only if the XML content is the sam after stripping
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19 attirbutes the tool shed updates.
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20 """
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21 assert label_a != label_b
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22 special = ["tool_dependencies.xml", "repository_dependencies.xml"]
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23 deps_diff = 0
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24 # Could walk either A or B; will only compare if in same relative location
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25 for dirpath, dirnames, filenames in os.walk(os.path.join(working, label_a)):
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26 for filename in filenames:
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27 if filename in special:
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28 a = os.path.join(dirpath, filename)
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29 b = os.path.join(working, label_b, os.path.relpath(a, os.path.join(working, label_a)))
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30 files_exist = os.path.exists(a) and os.path.exists(b)
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31 if files_exist:
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32 deps_diff |= _shed_diff(a, b, f)
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33 os.remove(a)
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34 os.remove(b)
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35 return deps_diff
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36
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37
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38 def _shed_diff(file_a, file_b, f=sys.stdout):
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39 """Strip attributes the tool shed writes and do smart XML diff.
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40
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41 Returns 0 if and only if the XML content is the same after stripping
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42 ``tool_shed`` and ``changeset_revision`` attributes.
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43 """
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44 xml_a = ElementTree.parse(file_a).getroot()
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45 xml_b = ElementTree.parse(file_b).getroot()
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46 _strip_shed_attributes(xml_a)
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47 _strip_shed_attributes(xml_b)
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48 return diff.diff(xml_a, xml_b, reporter=f.write)
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49
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50
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51 def _strip_shed_attributes(xml_element):
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52 if xml_element.tag == "repository":
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53 _remove_attribs(xml_element)
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54 for child in xml_element:
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55 _strip_shed_attributes(child)
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56
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57
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58 def _remove_attribs(xml_element):
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59 for attrib in ["changeset_revision", "toolshed"]:
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60 if attrib in xml_element.attrib:
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61 del xml_element.attrib[attrib]
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62
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63
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64 __all__ = (
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65 "diff_and_remove",
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66 )