mirror of https://github.com/python/cpython
Cleanup and modernize code prior to working on Issue 11747.
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@ -1188,22 +1188,23 @@ def unified_diff(a, b, fromfile='', tofile='', fromfiledate='',
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started = False
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for group in SequenceMatcher(None,a,b).get_grouped_opcodes(n):
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if not started:
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fromdate = '\t%s' % fromfiledate if fromfiledate else ''
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todate = '\t%s' % tofiledate if tofiledate else ''
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yield '--- %s%s%s' % (fromfile, fromdate, lineterm)
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yield '+++ %s%s%s' % (tofile, todate, lineterm)
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started = True
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i1, i2, j1, j2 = group[0][1], group[-1][2], group[0][3], group[-1][4]
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yield "@@ -%d,%d +%d,%d @@%s" % (i1+1, i2-i1, j1+1, j2-j1, lineterm)
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fromdate = '\t{}'.format(fromfiledate) if fromfiledate else ''
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todate = '\t{}'.format(tofiledate) if tofiledate else ''
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yield '--- {}{}{}'.format(fromfile, fromdate, lineterm)
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yield '+++ {}{}{}'.format(tofile, todate, lineterm)
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first, last = group[0], group[-1]
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i1, i2, j1, j2 = first[1], last[2], first[3], last[4]
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yield '@@ -{},{} +{},{} @@{}'.format(i1+1, i2-i1, j1+1, j2-j1, lineterm)
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for tag, i1, i2, j1, j2 in group:
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if tag == 'equal':
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for line in a[i1:i2]:
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yield ' ' + line
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continue
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if tag == 'replace' or tag == 'delete':
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if tag in {'replace', 'delete'}:
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for line in a[i1:i2]:
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yield '-' + line
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if tag == 'replace' or tag == 'insert':
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if tag in {'replace', 'insert'}:
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for line in b[j1:j2]:
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yield '+' + line
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@ -1252,38 +1253,38 @@ def context_diff(a, b, fromfile='', tofile='',
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four
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"""
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prefix = dict(insert='+ ', delete='- ', replace='! ', equal=' ')
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started = False
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prefixmap = {'insert':'+ ', 'delete':'- ', 'replace':'! ', 'equal':' '}
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for group in SequenceMatcher(None,a,b).get_grouped_opcodes(n):
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if not started:
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fromdate = '\t%s' % fromfiledate if fromfiledate else ''
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todate = '\t%s' % tofiledate if tofiledate else ''
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yield '*** %s%s%s' % (fromfile, fromdate, lineterm)
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yield '--- %s%s%s' % (tofile, todate, lineterm)
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started = True
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fromdate = '\t{}'.format(fromfiledate) if fromfiledate else ''
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todate = '\t{}'.format(tofiledate) if tofiledate else ''
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yield '*** {}{}{}'.format(fromfile, fromdate, lineterm)
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yield '--- {}{}{}'.format(tofile, todate, lineterm)
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yield '***************%s' % (lineterm,)
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if group[-1][2] - group[0][1] >= 2:
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yield '*** %d,%d ****%s' % (group[0][1]+1, group[-1][2], lineterm)
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first, last = group[0], group[-1]
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yield '***************{}'.format(lineterm)
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if last[2] - first[1] > 1:
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yield '*** {},{} ****{}'.format(first[1]+1, last[2], lineterm)
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else:
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yield '*** %d ****%s' % (group[-1][2], lineterm)
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visiblechanges = [e for e in group if e[0] in {'replace', 'delete'}]
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if visiblechanges:
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yield '*** {} ****{}'.format(last[2], lineterm)
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if any(tag in {'replace', 'delete'} for tag, _, _, _, _ in group):
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for tag, i1, i2, _, _ in group:
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if tag != 'insert':
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for line in a[i1:i2]:
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yield prefixmap[tag] + line
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yield prefix[tag] + line
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if group[-1][4] - group[0][3] >= 2:
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yield '--- %d,%d ----%s' % (group[0][3]+1, group[-1][4], lineterm)
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if last[4] - first[3] > 1:
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yield '--- {},{} ----{}'.format(first[3]+1, last[4], lineterm)
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else:
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yield '--- %d ----%s' % (group[-1][4], lineterm)
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visiblechanges = [e for e in group if e[0] in {'replace', 'insert'}]
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if visiblechanges:
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yield '--- {} ----{}'.format(last[4], lineterm)
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if any(tag in {'replace', 'insert'} for tag, _, _, _, _ in group):
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for tag, _, _, j1, j2 in group:
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if tag != 'delete':
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for line in b[j1:j2]:
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yield prefixmap[tag] + line
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yield prefix[tag] + line
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def ndiff(a, b, linejunk=None, charjunk=IS_CHARACTER_JUNK):
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r"""
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