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

util: teach stringmatcher to handle forced case insensitive matches...

util: teach stringmatcher to handle forced case insensitive matches The 'author' and 'desc' revsets are documented to be case insensitive. Unfortunately, this was implemented in 'author' by forcing the input to lowercase, including for regex like '\B'. (This actually inverts the meaning of the sequence.) For backward compatibility, we will keep that a case insensitive regex, but by using matcher options instead of brute force. This doesn't preclude future hypothetical 'icase-literal:' style prefixes that can be provided by the user. Such user specified cases can probably be handled up front by stripping 'icase-', setting the variable, and letting it drop through the existing code.

Gregory Szorc - - Load All Authors

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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 or any later version.

      from __future__ import absolute_import

      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]

          # tolerate CRLF in last line

          if l.endswith('\r\n'):

              hline = l[:-2]

          else:

              hline = l[:-1]

          c = hline[0]

          if c in " +":

              b[-1] = hline[1:]

          if c in " -":

              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 or any later version.

				from __future__ import absolute_import

				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]
				# tolerate CRLF in last line
				if l.endswith('\r\n'):
				hline = l[:-2]
				else:
				hline = l[:-1]
				c = hline[0]

				if c in " +":
				b[-1] = hline[1:]
				if c in " -":
				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