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394 lines
8.9 KiB
394 lines
8.9 KiB
#!/bin/sh |
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# |
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USAGE='<fetch-options> <repository> <refspec>...' |
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. git-sh-setup |
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. git-parse-remote |
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_x40='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]' |
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_x40="$_x40$_x40$_x40$_x40$_x40$_x40$_x40$_x40" |
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LF=' |
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' |
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IFS="$LF" |
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no_tags= |
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tags= |
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append= |
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force= |
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verbose= |
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update_head_ok= |
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while case "$#" in 0) break ;; esac |
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do |
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case "$1" in |
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-a|--a|--ap|--app|--appe|--appen|--append) |
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append=t |
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;; |
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-f|--f|--fo|--for|--forc|--force) |
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force=t |
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;; |
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-t|--t|--ta|--tag|--tags) |
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tags=t |
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;; |
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-n|--n|--no|--no-|--no-t|--no-ta|--no-tag|--no-tags) |
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no_tags=t |
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;; |
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-u|--u|--up|--upd|--upda|--updat|--update|--update-|--update-h|\ |
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--update-he|--update-hea|--update-head|--update-head-|\ |
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--update-head-o|--update-head-ok) |
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update_head_ok=t |
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;; |
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-v|--verbose) |
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verbose=Yes |
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;; |
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-*) |
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usage |
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;; |
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*) |
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break |
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;; |
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esac |
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shift |
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done |
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case "$#" in |
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0) |
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test -f "$GIT_DIR/branches/origin" || |
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test -f "$GIT_DIR/remotes/origin" || |
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die "Where do you want to fetch from today?" |
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set origin ;; |
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esac |
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remote_nick="$1" |
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remote=$(get_remote_url "$@") |
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refs= |
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rref= |
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rsync_slurped_objects= |
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if test "" = "$append" |
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then |
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: >"$GIT_DIR/FETCH_HEAD" |
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fi |
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append_fetch_head () { |
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head_="$1" |
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remote_="$2" |
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remote_name_="$3" |
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remote_nick_="$4" |
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local_name_="$5" |
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case "$6" in |
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t) not_for_merge_='not-for-merge' ;; |
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'') not_for_merge_= ;; |
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esac |
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# remote-nick is the URL given on the command line (or a shorthand) |
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# remote-name is the $GIT_DIR relative refs/ path we computed |
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# for this refspec. |
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case "$remote_name_" in |
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HEAD) |
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note_= ;; |
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refs/heads/*) |
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note_="$(expr "$remote_name_" : 'refs/heads/\(.*\)')" |
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note_="branch '$note_' of " ;; |
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refs/tags/*) |
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note_="$(expr "$remote_name_" : 'refs/tags/\(.*\)')" |
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note_="tag '$note_' of " ;; |
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*) |
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note_="$remote_name of " ;; |
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esac |
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remote_1_=$(expr "$remote_" : '\(.*\)\.git/*$') && |
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remote_="$remote_1_" |
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note_="$note_$remote_" |
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# 2.6.11-tree tag would not be happy to be fed to resolve. |
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if git-cat-file commit "$head_" >/dev/null 2>&1 |
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then |
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headc_=$(git-rev-parse --verify "$head_^0") || exit |
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echo "$headc_ $not_for_merge_ $note_" >>"$GIT_DIR/FETCH_HEAD" |
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[ "$verbose" ] && echo >&2 "* committish: $head_" |
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[ "$verbose" ] && echo >&2 " $note_" |
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else |
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echo "$head_ not-for-merge $note_" >>"$GIT_DIR/FETCH_HEAD" |
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[ "$verbose" ] && echo >&2 "* non-commit: $head_" |
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[ "$verbose" ] && echo >&2 " $note_" |
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fi |
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if test "$local_name_" != "" |
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then |
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# We are storing the head locally. Make sure that it is |
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# a fast forward (aka "reverse push"). |
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fast_forward_local "$local_name_" "$head_" "$note_" |
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fi |
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} |
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fast_forward_local () { |
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mkdir -p "$(dirname "$GIT_DIR/$1")" |
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case "$1" in |
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refs/tags/*) |
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# Tags need not be pointing at commits so there |
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# is no way to guarantee "fast-forward" anyway. |
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if test -f "$GIT_DIR/$1" |
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then |
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if now_=$(cat "$GIT_DIR/$1") && test "$now_" = "$2" |
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then |
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[ "$verbose" ] && echo >&2 "* $1: same as $3" |
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else |
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echo >&2 "* $1: updating with $3" |
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fi |
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else |
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echo >&2 "* $1: storing $3" |
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fi |
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git-update-ref "$1" "$2" |
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;; |
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refs/heads/*) |
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# $1 is the ref being updated. |
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# $2 is the new value for the ref. |
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local=$(git-rev-parse --verify "$1^0" 2>/dev/null) |
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if test "$local" |
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then |
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# Require fast-forward. |
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mb=$(git-merge-base "$local" "$2") && |
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case "$2,$mb" in |
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$local,*) |
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echo >&2 "* $1: same as $3" |
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;; |
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*,$local) |
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echo >&2 "* $1: fast forward to $3" |
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git-update-ref "$1" "$2" "$local" |
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;; |
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*) |
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false |
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;; |
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esac || { |
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echo >&2 "* $1: does not fast forward to $3;" |
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case ",$force,$single_force," in |
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*,t,*) |
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echo >&2 " forcing update." |
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git-update-ref "$1" "$2" "$local" |
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;; |
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*) |
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echo >&2 " not updating." |
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;; |
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esac |
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} |
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else |
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echo >&2 "* $1: storing $3" |
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git-update-ref "$1" "$2" |
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fi |
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;; |
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esac |
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} |
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case "$update_head_ok" in |
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'') |
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orig_head=$(git-rev-parse --verify HEAD 2>/dev/null) |
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;; |
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esac |
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# If --tags (and later --heads or --all) is specified, then we are |
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# not talking about defaults stored in Pull: line of remotes or |
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# branches file, and just fetch those and refspecs explicitly given. |
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# Otherwise we do what we always did. |
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reflist=$(get_remote_refs_for_fetch "$@") |
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if test "$tags" |
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then |
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taglist=$(IFS=" " && |
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git-ls-remote --tags "$remote" | |
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while read sha1 name |
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do |
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case "$name" in |
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(*^*) continue ;; |
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esac |
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if git-check-ref-format "$name" |
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then |
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echo ".${name}:${name}" |
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else |
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echo >&2 "warning: tag ${name} ignored" |
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fi |
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done) |
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if test "$#" -gt 1 |
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then |
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# remote URL plus explicit refspecs; we need to merge them. |
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reflist="$reflist$LF$taglist" |
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else |
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# No explicit refspecs; fetch tags only. |
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reflist=$taglist |
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fi |
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fi |
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fetch_main () { |
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reflist="$1" |
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refs= |
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for ref in $reflist |
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do |
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refs="$refs$LF$ref" |
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# These are relative path from $GIT_DIR, typically starting at refs/ |
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# but may be HEAD |
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if expr "$ref" : '\.' >/dev/null |
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then |
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not_for_merge=t |
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ref=$(expr "$ref" : '\.\(.*\)') |
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else |
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not_for_merge= |
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fi |
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if expr "$ref" : '\+' >/dev/null |
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then |
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single_force=t |
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ref=$(expr "$ref" : '\+\(.*\)') |
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else |
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single_force= |
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fi |
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remote_name=$(expr "$ref" : '\([^:]*\):') |
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local_name=$(expr "$ref" : '[^:]*:\(.*\)') |
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rref="$rref$LF$remote_name" |
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# There are transports that can fetch only one head at a time... |
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case "$remote" in |
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http://* | https://*) |
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if [ -n "$GIT_SSL_NO_VERIFY" ]; then |
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curl_extra_args="-k" |
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fi |
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remote_name_quoted=$(perl -e ' |
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my $u = $ARGV[0]; |
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$u =~ s{([^-a-zA-Z0-9/.])}{sprintf"%%%02x",ord($1)}eg; |
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print "$u"; |
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' "$remote_name") |
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head=$(curl -nsfL $curl_extra_args "$remote/$remote_name_quoted") && |
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expr "$head" : "$_x40\$" >/dev/null || |
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die "Failed to fetch $remote_name from $remote" |
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echo >&2 Fetching "$remote_name from $remote" using http |
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git-http-fetch -v -a "$head" "$remote/" || exit |
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;; |
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rsync://*) |
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TMP_HEAD="$GIT_DIR/TMP_HEAD" |
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rsync -L -q "$remote/$remote_name" "$TMP_HEAD" || exit 1 |
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head=$(git-rev-parse --verify TMP_HEAD) |
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rm -f "$TMP_HEAD" |
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test "$rsync_slurped_objects" || { |
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rsync -av --ignore-existing --exclude info \ |
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"$remote/objects/" "$GIT_OBJECT_DIRECTORY/" || exit |
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# Look at objects/info/alternates for rsync -- http will |
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# support it natively and git native ones will do it on |
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# the remote end. Not having that file is not a crime. |
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rsync -q "$remote/objects/info/alternates" \ |
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"$GIT_DIR/TMP_ALT" 2>/dev/null || |
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rm -f "$GIT_DIR/TMP_ALT" |
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if test -f "$GIT_DIR/TMP_ALT" |
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then |
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resolve_alternates "$remote" <"$GIT_DIR/TMP_ALT" | |
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while read alt |
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do |
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case "$alt" in 'bad alternate: '*) die "$alt";; esac |
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echo >&2 "Getting alternate: $alt" |
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rsync -av --ignore-existing --exclude info \ |
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"$alt" "$GIT_OBJECT_DIRECTORY/" || exit |
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done |
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rm -f "$GIT_DIR/TMP_ALT" |
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fi |
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rsync_slurped_objects=t |
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} |
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;; |
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*) |
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# We will do git native transport with just one call later. |
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continue ;; |
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esac |
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append_fetch_head "$head" "$remote" \ |
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"$remote_name" "$remote_nick" "$local_name" "$not_for_merge" |
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done |
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case "$remote" in |
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http://* | https://* | rsync://* ) |
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;; # we are already done. |
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*) |
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( : subshell because we muck with IFS |
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IFS=" $LF" |
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( |
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git-fetch-pack "$remote" $rref || echo failed "$remote" |
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) | |
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while read sha1 remote_name |
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do |
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case "$sha1" in |
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failed) |
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echo >&2 "Fetch failure: $remote" |
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exit 1 ;; |
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esac |
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found= |
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single_force= |
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for ref in $refs |
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do |
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case "$ref" in |
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+$remote_name:*) |
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single_force=t |
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not_for_merge= |
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found="$ref" |
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break ;; |
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.+$remote_name:*) |
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single_force=t |
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not_for_merge=t |
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found="$ref" |
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break ;; |
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.$remote_name:*) |
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not_for_merge=t |
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found="$ref" |
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break ;; |
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$remote_name:*) |
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not_for_merge= |
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found="$ref" |
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break ;; |
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esac |
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done |
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local_name=$(expr "$found" : '[^:]*:\(.*\)') |
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append_fetch_head "$sha1" "$remote" \ |
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"$remote_name" "$remote_nick" "$local_name" "$not_for_merge" |
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done |
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) || exit ;; |
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esac |
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} |
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fetch_main "$reflist" |
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# automated tag following |
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case "$no_tags$tags" in |
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'') |
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taglist=$(IFS=" " && |
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git-ls-remote --tags "$remote" | |
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sed -ne 's|^\([0-9a-f]*\)[ ]\(refs/tags/.*\)^{}$|\1 \2|p' | |
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while read sha1 name |
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do |
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test -f "$GIT_DIR/$name" && continue |
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git-check-ref-format "$name" || { |
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echo >&2 "warning: tag ${name} ignored" |
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continue |
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} |
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git-cat-file -t "$sha1" >/dev/null 2>&1 || continue |
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echo >&2 "Auto-following $name" |
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echo ".${name}:${name}" |
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done) |
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case "$taglist" in |
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'') ;; |
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?*) |
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fetch_main "$taglist" ;; |
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esac |
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esac |
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# If the original head was empty (i.e. no "master" yet), or |
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# if we were told not to worry, we do not have to check. |
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case ",$update_head_ok,$orig_head," in |
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*,, | t,* ) |
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;; |
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*) |
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curr_head=$(git-rev-parse --verify HEAD 2>/dev/null) |
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if test "$curr_head" != "$orig_head" |
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then |
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git-update-ref HEAD "$orig_head" |
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die "Cannot fetch into the current branch." |
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fi |
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;; |
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esac
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