upstream/mercurial-mirror Files · mercurial/pure/diffhelpers.py

extdiff: prevent exception on double-translation...

extdiff: prevent exception on double-translation The docstring is translated twice: once when used as a format string, and once on display. The second translation fails when the first translation introduces non-ASCII characters in the string. The problem is that the gettext module calls unicode(message) on the string, i.e., it decodes it to a Unicode string using the ASCII encoding (the default encoding). By translating it into a Unicode string here, the unicode() call becomes a noop.

Martin Geisler - - Load All Authors

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             diffhelpers.py
        
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      # diffhelpers.py - pure Python implementation of diffhelpers.c

      #

      # Copyright 2009 Matt Mackall <mpm@selenic.com> and others

      #

      # This software may be used and distributed according to the terms of the

      # GNU General Public License version 2, incorporated herein by reference.

      def addlines(fp, hunk, lena, lenb, a, b):

          while True:

              todoa = lena - len(a)

              todob = lenb - len(b)

              num = max(todoa, todob)

              if num == 0:

                  break

              for i in xrange(num):

                  s = fp.readline()

                  c = s[0]

                  if s == "\\ No newline at end of file\n":

                      fix_newline(hunk, a, b)

                      continue

                  if c == "\n":

                      # Some patches may be missing the control char

                      # on empty lines. Supply a leading space.

                      s = " \n"

                  hunk.append(s)

                  if c == "+":

                      b.append(s[1:])

                  elif c == "-":

                      a.append(s)

                  else:

                      b.append(s[1:])

                      a.append(s)

          return 0

      def fix_newline(hunk, a, b):

          l = hunk[-1]

          c = l[0]

          hline = l[:-1]

          if c == " " or c == "+":

              b[-1] = l[1:-1]

          if c == " " or c == "-":

              a[-1] = hline

          hunk[-1] = hline

          return 0

      def testhunk(a, b, bstart):

          alen = len(a)

          blen = len(b)

          if alen > blen - bstart:

              return -1

          for i in xrange(alen):

              if a[i][1:] != b[i + bstart]:

                  return -1

          return 0

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				# diffhelpers.py - pure Python implementation of diffhelpers.c
				#
				# Copyright 2009 Matt Mackall <mpm@selenic.com> and others
				#
				# This software may be used and distributed according to the terms of the
				# GNU General Public License version 2, incorporated herein by reference.

				def addlines(fp, hunk, lena, lenb, a, b):
				while True:
				todoa = lena - len(a)
				todob = lenb - len(b)
				num = max(todoa, todob)
				if num == 0:
				break
				for i in xrange(num):
				s = fp.readline()
				c = s[0]
				if s == "\\ No newline at end of file\n":
				fix_newline(hunk, a, b)
				continue
				if c == "\n":
				# Some patches may be missing the control char
				# on empty lines. Supply a leading space.
				s = " \n"
				hunk.append(s)
				if c == "+":
				b.append(s[1:])
				elif c == "-":
				a.append(s)
				else:
				b.append(s[1:])
				a.append(s)
				return 0

				def fix_newline(hunk, a, b):
				l = hunk[-1]
				c = l[0]
				hline = l[:-1]

				if c == " " or c == "+":
				b[-1] = l[1:-1]
				if c == " " or c == "-":
				a[-1] = hline
				hunk[-1] = hline
				return 0


				def testhunk(a, b, bstart):
				alen = len(a)
				blen = len(b)
				if alen > blen - bstart:
				return -1
				for i in xrange(alen):
				if a[i][1:] != b[i + bstart]:
				return -1
				return 0