Mercurial > hg > mercurial-crew-with-dirclash
view hgmerge @ 635:85e2209d401c
Protocol switch from using generators to stream-like objects.
This allows the the pull side to precisely control how much data is
read so that another encapsulation layer is not needed.
An http client gets a response with a finite size. Because ssh clients
need to keep the stream open, we must not read more data than is sent
in a response. But due to the streaming nature of the changegroup
scheme, only the piece that's parsing the data knows how far it's
allowed to read.
This means the generator scheme isn't fine-grained enough. Instead we
need file-like objects with a read(x) method. This switches everything
for push/pull over to using file-like objects rather than generators.
author | Matt Mackall <mpm@selenic.com> |
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date | Wed, 06 Jul 2005 22:20:12 -0800 |
parents | 4fc63e22b1fe |
children | cd0ad12d9e42 8f5637f0a0c0 0902ffece4b4 |
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#!/bin/sh # # hgmerge - default merge helper for Mercurial # # This tries to find a way to do three-way merge on the current system. # The result ought to end up in $1. set -e # bail out quickly on failure LOCAL=$1 BASE=$2 OTHER=$3 EDITOR="${EDITOR:-vi}" # Back up our file cp $LOCAL $LOCAL.orig # Attempt to do a non-interactive merge if which merge > /dev/null ; then if merge $LOCAL $BASE $OTHER 2> /dev/null; then # success! exit 0 fi cp $LOCAL.orig $LOCAL elif which diff3 > /dev/null ; then if diff3 -m $LOCAL.orig $BASE $OTHER > $LOCAL ; then # success exit 0 fi cp $LOCAL.orig $LOCAL fi if [ -n "$DISPLAY" ]; then # try using kdiff3, which is fairly nice if which kdiff3 > /dev/null ; then if kdiff3 --auto $BASE $LOCAL $OTHER -o $LOCAL ; then exit 0 else exit 1 fi fi # try using tkdiff, which is a bit less sophisticated if which tkdiff > /dev/null ; then if tkdiff $LOCAL $OTHER -a $BASE -o $LOCAL ; then exit 0 else exit 1 fi fi fi # Attempt to do a merge with $EDITOR if which merge > /dev/null ; then echo "conflicts detected in $LOCAL" merge $LOCAL $BASE $OTHER 2>/dev/null || $EDITOR $LOCAL exit 0 fi if which diff3 > /dev/null ; then echo "conflicts detected in $LOCAL" diff3 -m $LOCAL.orig $BASE $OTHER > $LOCAL || $EDITOR $LOCAL exit 0 fi # attempt to manually merge with diff and patch if which diff > /dev/null ; then if which patch > /dev/null ; then T=`mktemp` diff -u $BASE $OTHER > $T if patch $LOCAL < $T ; then exit 0 else $EDITOR $LOCAL $LOCAL.rej fi rm $T exit 1 fi fi echo "hgmerge: unable to find merge, tkdiff, kdiff3, or diff+patch!" exit 1