--- a/eric6/UI/DiffDialog.py Fri Oct 09 17:17:21 2020 +0200
+++ b/eric6/UI/DiffDialog.py Fri Oct 09 17:19:29 2020 +0200
@@ -25,175 +25,7 @@
import Utilities
import Preferences
-from difflib import SequenceMatcher
-
-
-def unified_diff(a, b, fromfile='', tofile='', fromfiledate='',
- tofiledate='', n=3, lineterm='\n'):
- """
- Compare two sequences of lines; generate the delta as a unified diff.
-
- Unified diffs are a compact way of showing line changes and a few
- lines of context. The number of context lines is set by 'n' which
- defaults to three.
-
- By default, the diff control lines (those with ---, +++, or @@) are
- created with a trailing newline. This is helpful so that inputs
- created from file.readlines() result in diffs that are suitable for
- file.writelines() since both the inputs and outputs have trailing
- newlines.
-
- For inputs that do not have trailing newlines, set the lineterm
- argument to "" so that the output will be uniformly newline free.
-
- The unidiff format normally has a header for filenames and modification
- times. Any or all of these may be specified using strings for
- 'fromfile', 'tofile', 'fromfiledate', and 'tofiledate'. The modification
- times are normally expressed in the format returned by time.ctime().
-
- Example:
-
- <pre>
- >>> for line in unified_diff('one two three four'.split(),
- ... 'zero one tree four'.split(), 'Original', 'Current',
- ... 'Sat Jan 26 23:30:50 1991', 'Fri Jun 06 10:20:52 2003',
- ... lineterm=''):
- ... print line
- --- Original Sat Jan 26 23:30:50 1991
- +++ Current Fri Jun 06 10:20:52 2003
- @@ -1,4 +1,4 @@
- +zero
- one
- -two
- -three
- +tree
- four
- </pre>
-
- @param a first sequence of lines (list of strings)
- @param b second sequence of lines (list of strings)
- @param fromfile filename of the first file (string)
- @param tofile filename of the second file (string)
- @param fromfiledate modification time of the first file (string)
- @param tofiledate modification time of the second file (string)
- @param n number of lines of context (integer)
- @param lineterm line termination string (string)
- @return a generator yielding lines of differences
- """
- started = False
- for group in SequenceMatcher(None, a, b).get_grouped_opcodes(n):
- if not started:
- yield '--- {0}\t{1}{2}'.format(fromfile, fromfiledate, lineterm)
- yield '+++ {0}\t{1}{2}'.format(tofile, tofiledate, lineterm)
- started = True
- i1 = group[0][1]
- i2 = group[-1][2]
- j1 = group[0][3]
- j2 = group[-1][4]
- yield "@@ -{0:d},{1:d} +{2:d},{3:d} @@{4}".format(
- i1 + 1, i2 - i1, j1 + 1, j2 - j1, lineterm)
- for tag, i1, i2, j1, j2 in group:
- if tag == 'equal':
- for line in a[i1:i2]:
- yield ' ' + line
- continue
- if tag == 'replace' or tag == 'delete':
- for line in a[i1:i2]:
- yield '-' + line
- if tag == 'replace' or tag == 'insert':
- for line in b[j1:j2]:
- yield '+' + line
-
-
-def context_diff(a, b, fromfile='', tofile='',
- fromfiledate='', tofiledate='', n=3, lineterm='\n'):
- r"""
- Compare two sequences of lines; generate the delta as a context diff.
-
- Context diffs are a compact way of showing line changes and a few
- lines of context. The number of context lines is set by 'n' which
- defaults to three.
-
- By default, the diff control lines (those with *** or ---) are
- created with a trailing newline. This is helpful so that inputs
- created from file.readlines() result in diffs that are suitable for
- file.writelines() since both the inputs and outputs have trailing
- newlines.
-
- For inputs that do not have trailing newlines, set the lineterm
- argument to "" so that the output will be uniformly newline free.
-
- The context diff format normally has a header for filenames and
- modification times. Any or all of these may be specified using
- strings for 'fromfile', 'tofile', 'fromfiledate', and 'tofiledate'.
- The modification times are normally expressed in the format returned
- by time.ctime(). If not specified, the strings default to blanks.
-
- Example:
-
- <pre>
- >>> print ''.join(
- ... context_diff('one\ntwo\nthree\nfour\n'.splitlines(1),
- ... 'zero\none\ntree\nfour\n'.splitlines(1), 'Original', 'Current',
- ... 'Sat Jan 26 23:30:50 1991', 'Fri Jun 06 10:22:46 2003')),
- *** Original Sat Jan 26 23:30:50 1991
- --- Current Fri Jun 06 10:22:46 2003
- ***************
- *** 1,4 ****
- one
- ! two
- ! three
- four
- --- 1,4 ----
- + zero
- one
- ! tree
- four
- </pre>
-
- @param a first sequence of lines (list of strings)
- @param b second sequence of lines (list of strings)
- @param fromfile filename of the first file (string)
- @param tofile filename of the second file (string)
- @param fromfiledate modification time of the first file (string)
- @param tofiledate modification time of the second file (string)
- @param n number of lines of context (integer)
- @param lineterm line termination string (string)
- @return a generator yielding lines of differences
- """
- started = False
- prefixmap = {'insert': '+ ', 'delete': '- ', 'replace': '! ',
- 'equal': ' '}
- for group in SequenceMatcher(None, a, b).get_grouped_opcodes(n):
- if not started:
- yield '*** {0}\t{1}{2}'.format(fromfile, fromfiledate, lineterm)
- yield '--- {0}\t{1}{2}'.format(tofile, tofiledate, lineterm)
- started = True
-
- yield '***************{0}'.format(lineterm)
- if group[-1][2] - group[0][1] >= 2:
- yield '*** {0:d},{1:d} ****{2}'.format(
- group[0][1] + 1, group[-1][2], lineterm)
- else:
- yield '*** {0:d} ****{1}'.format(group[-1][2], lineterm)
- visiblechanges = [e for e in group if e[0] in ('replace', 'delete')]
- if visiblechanges:
- for tag, i1, i2, _, _ in group:
- if tag != 'insert':
- for line in a[i1:i2]:
- yield prefixmap[tag] + line
-
- if group[-1][4] - group[0][3] >= 2:
- yield '--- {0:d},{1:d} ----{2}'.format(
- group[0][3] + 1, group[-1][4], lineterm)
- else:
- yield '--- {0:d} ----{1}'.format(group[-1][4], lineterm)
- visiblechanges = [e for e in group if e[0] in ('replace', 'insert')]
- if visiblechanges:
- for tag, _, _, j1, j2 in group:
- if tag != 'delete':
- for line in b[j1:j2]:
- yield prefixmap[tag] + line
+from difflib import unified_diff, context_diff
class DiffDialog(QWidget, Ui_DiffDialog):
