Make fetch a builtin

Thanks to Johannes Schindelin for review and fixes, and Julian
Phillips for the original C translation.

This changes a few small bits of behavior:

branch.<name>.merge is parsed as if it were the lhs of a fetch
refspec, and does not have to exactly match the actual lhs of a
refspec, so long as it is a valid abbreviation for the same ref.

branch.<name>.merge is no longer ignored if the remote is configured
with a branches/* file. Neither behavior is useful, because there can
only be one ref that gets fetched, but this is more consistant.

Also, fetch prints different information to standard out.

Signed-off-by: Daniel Barkalow <barkalow@iabervon.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 0 insertions, 377 deletions

diff --git a/git-fetch.sh b/git-fetch.sh
deleted file mode 100755
index c3a200120d..0000000000
--- a/git-fetch.sh
+++ /dev/null
@@ -1,377 +0,0 @@
-#!/bin/sh
-#
-
-USAGE='<fetch-options> <repository> <refspec>...'
-SUBDIRECTORY_OK=Yes
-. git-sh-setup
-set_reflog_action "fetch $*"
-cd_to_toplevel ;# probably unnecessary...
-
-. git-parse-remote
-_x40='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
-_x40="$_x40$_x40$_x40$_x40$_x40$_x40$_x40$_x40"
-
-LF='
-'
-IFS="$LF"
-
-no_tags=
-tags=
-append=
-force=
-verbose=
-update_head_ok=
-exec=
-keep=
-shallow_depth=
-no_progress=
-test -t 1 || no_progress=--no-progress
-quiet=
-while case "$#" in 0) break ;; esac
-do
-	case "$1" in
-	-a|--a|--ap|--app|--appe|--appen|--append)
-		append=t
-		;;
-	--upl|--uplo|--uploa|--upload|--upload-|--upload-p|\
-	--upload-pa|--upload-pac|--upload-pack)
-		shift
-		exec="--upload-pack=$1"
-		;;
-	--upl=*|--uplo=*|--uploa=*|--upload=*|\
-	--upload-=*|--upload-p=*|--upload-pa=*|--upload-pac=*|--upload-pack=*)
-		exec=--upload-pack=$(expr "z$1" : 'z-[^=]*=\(.*\)')
-		shift
-		;;
-	-f|--f|--fo|--for|--forc|--force)
-		force=t
-		;;
-	-t|--t|--ta|--tag|--tags)
-		tags=t
-		;;
-	-n|--n|--no|--no-|--no-t|--no-ta|--no-tag|--no-tags)
-		no_tags=t
-		;;
-	-u|--u|--up|--upd|--upda|--updat|--update|--update-|--update-h|\
-	--update-he|--update-hea|--update-head|--update-head-|\
-	--update-head-o|--update-head-ok)
-		update_head_ok=t
-		;;
-	-q|--q|--qu|--qui|--quie|--quiet)
-		quiet=--quiet
-		;;
-	-v|--verbose)
-		verbose="$verbose"Yes
-		;;
-	-k|--k|--ke|--kee|--keep)
-		keep='-k -k'
-		;;
-	--depth=*)
-		shallow_depth="--depth=`expr "z$1" : 'z-[^=]*=\(.*\)'`"
-		;;
-	--depth)
-		shift
-		shallow_depth="--depth=$1"
-		;;
-	-*)
-		usage
-		;;
-	*)
-		break
-		;;
-	esac
-	shift
-done
-
-case "$#" in
-0)
-	origin=$(get_default_remote)
-	test -n "$(get_remote_url ${origin})" ||
-		die "Where do you want to fetch from today?"
-	set x $origin ; shift ;;
-esac
-
-if test -z "$exec"
-then
-	# No command line override and we have configuration for the remote.
-	exec="--upload-pack=$(get_uploadpack $1)"
-fi
-
-remote_nick="$1"
-remote=$(get_remote_url "$@")
-refs=
-rref=
-rsync_slurped_objects=
-
-if test "" = "$append"
-then
-	: >"$GIT_DIR/FETCH_HEAD"
-fi
-
-# Global that is reused later
-ls_remote_result=$(git ls-remote $exec "$remote") ||
-	die "Cannot get the repository state from $remote"
-
-append_fetch_head () {
-	flags=
-	test -n "$verbose" && flags="$flags$LF-v"
-	test -n "$force$single_force" && flags="$flags$LF-f"
-	GIT_REFLOG_ACTION="$GIT_REFLOG_ACTION" \
-		git fetch--tool $flags append-fetch-head "$@"
-}
-
-# updating the current HEAD with git-fetch in a bare
-# repository is always fine.
-if test -z "$update_head_ok" && test $(is_bare_repository) = false
-then
-	orig_head=$(git rev-parse --verify HEAD 2>/dev/null)
-fi
-
-# Allow --notags from remote.$1.tagopt
-case "$tags$no_tags" in
-'')
-	case "$(git config --get "remote.$1.tagopt")" in
-	--no-tags)
-		no_tags=t ;;
-	esac
-esac
-
-# If --tags (and later --heads or --all) is specified, then we are
-# not talking about defaults stored in Pull: line of remotes or
-# branches file, and just fetch those and refspecs explicitly given.
-# Otherwise we do what we always did.
-
-reflist=$(get_remote_refs_for_fetch "$@")
-if test "$tags"
-then
-	taglist=`IFS='	' &&
-		  echo "$ls_remote_result" |
-		  git show-ref --exclude-existing=refs/tags/ |
-	          while read sha1 name
-		  do
-			echo ".${name}:${name}"
-		  done` || exit
-	if test "$#" -gt 1
-	then
-		# remote URL plus explicit refspecs; we need to merge them.
-		reflist="$reflist$LF$taglist"
-	else
-		# No explicit refspecs; fetch tags only.
-		reflist=$taglist
-	fi
-fi
-
-fetch_all_at_once () {
-
-  eval=$(echo "$1" | git fetch--tool parse-reflist "-")
-  eval "$eval"
-
-    ( : subshell because we muck with IFS
-      IFS=" 	$LF"
-      (
-	if test "$remote" = . ; then
-	    git show-ref $rref || echo failed "$remote"
-	elif test -f "$remote" ; then
-	    test -n "$shallow_depth" &&
-		die "shallow clone with bundle is not supported"
-	    git bundle unbundle "$remote" $rref ||
-	    echo failed "$remote"
-	else
-		if	test -d "$remote" &&
-
-			# The remote might be our alternate.  With
-			# this optimization we will bypass fetch-pack
-			# altogether, which means we cannot be doing
-			# the shallow stuff at all.
-			test ! -f "$GIT_DIR/shallow" &&
-			test -z "$shallow_depth" &&
-
-			# See if all of what we are going to fetch are
-			# connected to our repository's tips, in which
-			# case we do not have to do any fetch.
-			theirs=$(echo "$ls_remote_result" | \
-				git fetch--tool -s pick-rref "$rref" "-") &&
-
-			# This will barf when $theirs reach an object that
-			# we do not have in our repository.  Otherwise,
-			# we already have everything the fetch would bring in.
-			git rev-list --objects $theirs --not --all \
-				>/dev/null 2>/dev/null
-		then
-			echo "$ls_remote_result" | \
-				git fetch--tool pick-rref "$rref" "-"
-		else
-			flags=
-			case $verbose in
-			YesYes*)
-			    flags="-v"
-			    ;;
-			esac
-			git-fetch-pack --thin $exec $keep $shallow_depth \
-				$quiet $no_progress $flags "$remote" $rref ||
-			echo failed "$remote"
-		fi
-	fi
-      ) |
-      (
-	flags=
-	test -n "$verbose" && flags="$flags -v"
-	test -n "$force" && flags="$flags -f"
-	GIT_REFLOG_ACTION="$GIT_REFLOG_ACTION" \
-		git fetch--tool $flags native-store \
-			"$remote" "$remote_nick" "$refs"
-      )
-    ) || exit
-
-}
-
-fetch_per_ref () {
-  reflist="$1"
-  refs=
-  rref=
-
-  for ref in $reflist
-  do
-      refs="$refs$LF$ref"
-
-      # These are relative path from $GIT_DIR, typically starting at refs/
-      # but may be HEAD
-      if expr "z$ref" : 'z\.' >/dev/null
-      then
-	  not_for_merge=t
-	  ref=$(expr "z$ref" : 'z\.\(.*\)')
-      else
-	  not_for_merge=
-      fi
-      if expr "z$ref" : 'z+' >/dev/null
-      then
-	  single_force=t
-	  ref=$(expr "z$ref" : 'z+\(.*\)')
-      else
-	  single_force=
-      fi
-      remote_name=$(expr "z$ref" : 'z\([^:]*\):')
-      local_name=$(expr "z$ref" : 'z[^:]*:\(.*\)')
-
-      rref="$rref$LF$remote_name"
-
-      # There are transports that can fetch only one head at a time...
-      case "$remote" in
-      http://* | https://* | ftp://*)
-	  test -n "$shallow_depth" &&
-		die "shallow clone with http not supported"
-	  proto=`expr "$remote" : '\([^:]*\):'`
-	  if [ -n "$GIT_SSL_NO_VERIFY" ]; then
-	      curl_extra_args="-k"
-	  fi
-	  if [ -n "$GIT_CURL_FTP_NO_EPSV" -o \
-		"`git config --bool http.noEPSV`" = true ]; then
-	      noepsv_opt="--disable-epsv"
-	  fi
-
-	  # Find $remote_name from ls-remote output.
-	  head=$(echo "$ls_remote_result" | \
-		git fetch--tool -s pick-rref "$remote_name" "-")
-	  expr "z$head" : "z$_x40\$" >/dev/null ||
-		die "No such ref $remote_name at $remote"
-	  echo >&2 "Fetching $remote_name from $remote using $proto"
-	  case "$quiet" in '') v=-v ;; *) v= ;; esac
-	  git-http-fetch $v -a "$head" "$remote" || exit
-	  ;;
-      rsync://*)
-	  test -n "$shallow_depth" &&
-		die "shallow clone with rsync not supported"
-	  TMP_HEAD="$GIT_DIR/TMP_HEAD"
-	  rsync -L -q "$remote/$remote_name" "$TMP_HEAD" || exit 1
-	  head=$(git rev-parse --verify TMP_HEAD)
-	  rm -f "$TMP_HEAD"
-	  case "$quiet" in '') v=-v ;; *) v= ;; esac
-	  test "$rsync_slurped_objects" || {
-	      rsync -a $v --ignore-existing --exclude info \
-		  "$remote/objects/" "$GIT_OBJECT_DIRECTORY/" || exit
-
-	      # Look at objects/info/alternates for rsync -- http will
-	      # support it natively and git native ones will do it on
-	      # the remote end.  Not having that file is not a crime.
-	      rsync -q "$remote/objects/info/alternates" \
-		  "$GIT_DIR/TMP_ALT" 2>/dev/null ||
-		  rm -f "$GIT_DIR/TMP_ALT"
-	      if test -f "$GIT_DIR/TMP_ALT"
-	      then
-		  resolve_alternates "$remote" <"$GIT_DIR/TMP_ALT" |
-		  while read alt
-		  do
-		      case "$alt" in 'bad alternate: '*) die "$alt";; esac
-		      echo >&2 "Getting alternate: $alt"
-		      rsync -av --ignore-existing --exclude info \
-		      "$alt" "$GIT_OBJECT_DIRECTORY/" || exit
-		  done
-		  rm -f "$GIT_DIR/TMP_ALT"
-	      fi
-	      rsync_slurped_objects=t
-	  }
-	  ;;
-      esac
-
-      append_fetch_head "$head" "$remote" \
-	  "$remote_name" "$remote_nick" "$local_name" "$not_for_merge" || exit
-
-  done
-
-}
-
-fetch_main () {
-	case "$remote" in
-	http://* | https://* | ftp://* | rsync://* )
-		fetch_per_ref "$@"
-		;;
-	*)
-		fetch_all_at_once "$@"
-		;;
-	esac
-}
-
-fetch_main "$reflist" || exit
-
-# automated tag following
-case "$no_tags$tags" in
-'')
-	case "$reflist" in
-	*:refs/*)
-		# effective only when we are following remote branch
-		# using local tracking branch.
-		taglist=$(IFS='	' &&
-		echo "$ls_remote_result" |
-		git show-ref --exclude-existing=refs/tags/ |
-		while read sha1 name
-		do
-			git cat-file -t "$sha1" >/dev/null 2>&1 || continue
-			echo >&2 "Auto-following $name"
-			echo ".${name}:${name}"
-		done)
-	esac
-	case "$taglist" in
-	'') ;;
-	?*)
-		# do not deepen a shallow tree when following tags
-		shallow_depth=
-		fetch_main "$taglist" || exit ;;
-	esac
-esac
-
-# If the original head was empty (i.e. no "master" yet), or
-# if we were told not to worry, we do not have to check.
-case "$orig_head" in
-'')
-	;;
-?*)
-	curr_head=$(git rev-parse --verify HEAD 2>/dev/null)
-	if test "$curr_head" != "$orig_head"
-	then
-	    git update-ref \
-			-m "$GIT_REFLOG_ACTION: Undoing incorrectly fetched HEAD." \
-			HEAD "$orig_head"
-		die "Cannot fetch into the current branch."
-	fi
-	;;
-esac