mirror of
https://codeberg.org/OpenTracksApp/OpenTracks.git
synced 2026-10-02 17:43:06 +02:00
Jimmy Shih
94 lines
2.8 KiB
Python
94 lines
2.8 KiB
Python
'''
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Module which brings history information about files from Mercurial.
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@author: Rodrigo Damazio
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'''
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import re
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import subprocess
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REVISION_REGEX = re.compile(r'(?P<hash>[0-9a-f]{12}):.*')
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def _GetOutputLines(args):
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'''
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Runs an external process and returns its output as a list of lines.
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@param args: the arguments to run
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'''
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process = subprocess.Popen(args,
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stdout=subprocess.PIPE,
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universal_newlines = True,
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shell = False)
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output = process.communicate()[0]
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return output.splitlines()
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def FillMercurialRevisions(filename, parsed_file):
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'''
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Fills the revs attribute of all strings in the given parsed file with
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a list of revisions that touched the lines corresponding to that string.
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@param filename: the name of the file to get history for
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@param parsed_file: the parsed file to modify
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'''
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# Take output of hg annotate to get revision of each line
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output_lines = _GetOutputLines(['hg', 'annotate', '-c', filename])
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# Create a map of line -> revision (key is list index, line 0 doesn't exist)
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line_revs = ['dummy']
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for line in output_lines:
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rev_match = REVISION_REGEX.match(line)
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if not rev_match:
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raise 'Unexpected line of output from hg: %s' % line
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rev_hash = rev_match.group('hash')
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line_revs.append(rev_hash)
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for str in parsed_file.itervalues():
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# Get the lines that correspond to each string
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start_line = str['startLine']
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end_line = str['endLine']
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# Get the revisions that touched those lines
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revs = []
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for line_number in range(start_line, end_line + 1):
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revs.append(line_revs[line_number])
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# Merge with any revisions that were already there
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# (for explict revision specification)
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if 'revs' in str:
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revs += str['revs']
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# Assign the revisions to the string
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str['revs'] = frozenset(revs)
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def DoesRevisionSuperceed(filename, rev1, rev2):
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'''
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Tells whether a revision superceeds another.
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This essentially means that the older revision is an ancestor of the newer
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one.
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This also returns True if the two revisions are the same.
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@param rev1: the revision that may be superceeding the other
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@param rev2: the revision that may be superceeded
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@return: True if rev1 superceeds rev2 or they're the same
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'''
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if rev1 == rev2:
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return True
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# TODO: Add filename
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args = ['hg', 'log', '-r', 'ancestors(%s)' % rev1, '--template', '{node|short}\n', filename]
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output_lines = _GetOutputLines(args)
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return rev2 in output_lines
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def NewestRevision(filename, rev1, rev2):
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'''
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Returns which of two revisions is closest to the head of the repository.
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If none of them is the ancestor of the other, then we return either one.
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@param rev1: the first revision
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@param rev2: the second revision
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'''
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if DoesRevisionSuperceed(filename, rev1, rev2):
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return rev1
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return rev2 |