format-patch/commit: Quote single quote in the author name properly.
[git/jrn.git] / git-fetch.sh
blobb46b3e558945a3afb783894c75ce20cede0b4eec
1 #!/bin/sh
4 USAGE='<fetch-options> <repository> <refspec>...'
5 . git-sh-setup
6 . git-parse-remote
7 _x40='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
8 _x40="$_x40$_x40$_x40$_x40$_x40$_x40$_x40$_x40"
10 LF='
12 IFS="$LF"
14 tags=
15 append=
16 force=
17 verbose=
18 update_head_ok=
19 while case "$#" in 0) break ;; esac
21 case "$1" in
22 -a|--a|--ap|--app|--appe|--appen|--append)
23 append=t
25 -f|--f|--fo|--for|--forc|--force)
26 force=t
28 -t|--t|--ta|--tag|--tags)
29 tags=t
31 -u|--u|--up|--upd|--upda|--updat|--update|--update-|--update-h|\
32 --update-he|--update-hea|--update-head|--update-head-|\
33 --update-head-o|--update-head-ok)
34 update_head_ok=t
36 -v|--verbose)
37 verbose=Yes
39 -*)
40 usage
43 break
45 esac
46 shift
47 done
49 case "$#" in
51 test -f "$GIT_DIR/branches/origin" ||
52 test -f "$GIT_DIR/remotes/origin" ||
53 die "Where do you want to fetch from today?"
54 set origin ;;
55 esac
57 remote_nick="$1"
58 remote=$(get_remote_url "$@")
59 refs=
60 rref=
61 rsync_slurped_objects=
63 if test "" = "$append"
64 then
65 : >"$GIT_DIR/FETCH_HEAD"
68 append_fetch_head () {
69 head_="$1"
70 remote_="$2"
71 remote_name_="$3"
72 remote_nick_="$4"
73 local_name_="$5"
74 case "$6" in
75 t) not_for_merge_='not-for-merge' ;;
76 '') not_for_merge_= ;;
77 esac
79 # remote-nick is the URL given on the command line (or a shorthand)
80 # remote-name is the $GIT_DIR relative refs/ path we computed
81 # for this refspec.
82 case "$remote_name_" in
83 HEAD)
84 note_= ;;
85 refs/heads/*)
86 note_="$(expr "$remote_name_" : 'refs/heads/\(.*\)')"
87 note_="branch '$note_' of " ;;
88 refs/tags/*)
89 note_="$(expr "$remote_name_" : 'refs/tags/\(.*\)')"
90 note_="tag '$note_' of " ;;
92 note_="$remote_name of " ;;
93 esac
94 remote_1_=$(expr "$remote_" : '\(.*\)\.git/*$') &&
95 remote_="$remote_1_"
96 note_="$note_$remote_"
98 # 2.6.11-tree tag would not be happy to be fed to resolve.
99 if git-cat-file commit "$head_" >/dev/null 2>&1
100 then
101 headc_=$(git-rev-parse --verify "$head_^0") || exit
102 echo "$headc_ $not_for_merge_ $note_" >>"$GIT_DIR/FETCH_HEAD"
103 [ "$verbose" ] && echo >&2 "* committish: $head_"
104 [ "$verbose" ] && echo >&2 " $note_"
105 else
106 echo "$head_ not-for-merge $note_" >>"$GIT_DIR/FETCH_HEAD"
107 [ "$verbose" ] && echo >&2 "* non-commit: $head_"
108 [ "$verbose" ] && echo >&2 " $note_"
110 if test "$local_name_" != ""
111 then
112 # We are storing the head locally. Make sure that it is
113 # a fast forward (aka "reverse push").
114 fast_forward_local "$local_name_" "$head_" "$note_"
118 fast_forward_local () {
119 mkdir -p "$(dirname "$GIT_DIR/$1")"
120 case "$1" in
121 refs/tags/*)
122 # Tags need not be pointing at commits so there
123 # is no way to guarantee "fast-forward" anyway.
124 if test -f "$GIT_DIR/$1"
125 then
126 if now_=$(cat "$GIT_DIR/$1") && test "$now_" = "$2"
127 then
128 [ "$verbose" ] && echo >&2 "* $1: same as $3"
129 else
130 echo >&2 "* $1: updating with $3"
132 else
133 echo >&2 "* $1: storing $3"
135 git-update-ref "$1" "$2"
138 refs/heads/*)
139 # $1 is the ref being updated.
140 # $2 is the new value for the ref.
141 local=$(git-rev-parse --verify "$1^0" 2>/dev/null)
142 if test "$local"
143 then
144 # Require fast-forward.
145 mb=$(git-merge-base "$local" "$2") &&
146 case "$2,$mb" in
147 $local,*)
148 echo >&2 "* $1: same as $3"
150 *,$local)
151 echo >&2 "* $1: fast forward to $3"
152 git-update-ref "$1" "$2" "$local"
155 false
157 esac || {
158 echo >&2 "* $1: does not fast forward to $3;"
159 case ",$force,$single_force," in
160 *,t,*)
161 echo >&2 " forcing update."
162 git-update-ref "$1" "$2" "$local"
165 echo >&2 " not updating."
167 esac
169 else
170 echo >&2 "* $1: storing $3"
171 git-update-ref "$1" "$2"
174 esac
177 case "$update_head_ok" in
179 orig_head=$(git-rev-parse --verify HEAD 2>/dev/null)
181 esac
183 # If --tags (and later --heads or --all) is specified, then we are
184 # not talking about defaults stored in Pull: line of remotes or
185 # branches file, and just fetch those and refspecs explicitly given.
186 # Otherwise we do what we always did.
188 reflist=$(get_remote_refs_for_fetch "$@")
189 if test "$tags"
190 then
191 taglist=$(IFS=" " &&
192 git-ls-remote --tags "$remote" |
193 while read sha1 name
195 case "$name" in
196 (*^*) continue ;;
197 esac
198 if git-check-ref-format "$name"
199 then
200 echo ".${name}:${name}"
201 else
202 echo >&2 "warning: tag ${name} ignored"
204 done)
205 if test "$#" -gt 1
206 then
207 # remote URL plus explicit refspecs; we need to merge them.
208 reflist="$reflist$LF$taglist"
209 else
210 # No explicit refspecs; fetch tags only.
211 reflist=$taglist
215 for ref in $reflist
217 refs="$refs$LF$ref"
219 # These are relative path from $GIT_DIR, typically starting at refs/
220 # but may be HEAD
221 if expr "$ref" : '\.' >/dev/null
222 then
223 not_for_merge=t
224 ref=$(expr "$ref" : '\.\(.*\)')
225 else
226 not_for_merge=
228 if expr "$ref" : '\+' >/dev/null
229 then
230 single_force=t
231 ref=$(expr "$ref" : '\+\(.*\)')
232 else
233 single_force=
235 remote_name=$(expr "$ref" : '\([^:]*\):')
236 local_name=$(expr "$ref" : '[^:]*:\(.*\)')
238 rref="$rref$LF$remote_name"
240 # There are transports that can fetch only one head at a time...
241 case "$remote" in
242 http://* | https://*)
243 if [ -n "$GIT_SSL_NO_VERIFY" ]; then
244 curl_extra_args="-k"
246 remote_name_quoted=$(perl -e '
247 my $u = $ARGV[0];
248 $u =~ s{([^-a-zA-Z0-9/.])}{sprintf"%%%02x",ord($1)}eg;
249 print "$u";
250 ' "$remote_name")
251 head=$(curl -nsfL $curl_extra_args "$remote/$remote_name_quoted") &&
252 expr "$head" : "$_x40\$" >/dev/null ||
253 die "Failed to fetch $remote_name from $remote"
254 echo >&2 Fetching "$remote_name from $remote" using http
255 git-http-fetch -v -a "$head" "$remote/" || exit
257 rsync://*)
258 TMP_HEAD="$GIT_DIR/TMP_HEAD"
259 rsync -L -q "$remote/$remote_name" "$TMP_HEAD" || exit 1
260 head=$(git-rev-parse --verify TMP_HEAD)
261 rm -f "$TMP_HEAD"
262 test "$rsync_slurped_objects" || {
263 rsync -av --ignore-existing --exclude info \
264 "$remote/objects/" "$GIT_OBJECT_DIRECTORY/" || exit
266 # Look at objects/info/alternates for rsync -- http will
267 # support it natively and git native ones will do it on the remote
268 # end. Not having that file is not a crime.
269 rsync -q "$remote/objects/info/alternates" \
270 "$GIT_DIR/TMP_ALT" 2>/dev/null ||
271 rm -f "$GIT_DIR/TMP_ALT"
272 if test -f "$GIT_DIR/TMP_ALT"
273 then
274 resolve_alternates "$remote" <"$GIT_DIR/TMP_ALT" |
275 while read alt
277 case "$alt" in 'bad alternate: '*) die "$alt";; esac
278 echo >&2 "Getting alternate: $alt"
279 rsync -av --ignore-existing --exclude info \
280 "$alt" "$GIT_OBJECT_DIRECTORY/" || exit
281 done
282 rm -f "$GIT_DIR/TMP_ALT"
284 rsync_slurped_objects=t
288 # We will do git native transport with just one call later.
289 continue ;;
290 esac
292 append_fetch_head "$head" "$remote" \
293 "$remote_name" "$remote_nick" "$local_name" "$not_for_merge"
295 done
297 case "$remote" in
298 http://* | https://* | rsync://* )
299 ;; # we are already done.
301 IFS=" $LF"
303 git-fetch-pack "$remote" $rref || echo failed "$remote"
305 while read sha1 remote_name
307 case "$sha1" in
308 failed)
309 echo >&2 "Fetch failure: $remote"
310 exit 1 ;;
311 esac
312 found=
313 single_force=
314 for ref in $refs
316 case "$ref" in
317 +$remote_name:*)
318 single_force=t
319 not_for_merge=
320 found="$ref"
321 break ;;
322 .+$remote_name:*)
323 single_force=t
324 not_for_merge=t
325 found="$ref"
326 break ;;
327 .$remote_name:*)
328 not_for_merge=t
329 found="$ref"
330 break ;;
331 $remote_name:*)
332 not_for_merge=
333 found="$ref"
334 break ;;
335 esac
336 done
337 local_name=$(expr "$found" : '[^:]*:\(.*\)')
338 append_fetch_head "$sha1" "$remote" \
339 "$remote_name" "$remote_nick" "$local_name" "$not_for_merge"
340 done || exit
342 esac
344 # If the original head was empty (i.e. no "master" yet), or
345 # if we were told not to worry, we do not have to check.
346 case ",$update_head_ok,$orig_head," in
347 *,, | t,* )
350 curr_head=$(git-rev-parse --verify HEAD 2>/dev/null)
351 if test "$curr_head" != "$orig_head"
352 then
353 git-update-ref HEAD "$orig_head"
354 die "Cannot fetch into the current branch."
357 esac