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chromium / external / github.com / git / git / refs/tags/v1.1.4 / . / git-fetch.sh
blob: 73e57bd784c37b950219819fb2e025da8933aab6 [file] [log] [blame]
Linus Torvalds7ef76922005-05-22 18:03:24[diff] [blame]1#!/bin/sh
2#
freku045@student.liu.se87358b72005-12-13 22:30:31[diff] [blame]3
4USAGE='<fetch-options> <repository> <refspec>...'
Junio C Hamanoae2b0f12005-11-24 08:12:11[diff] [blame]5. git-sh-setup
Junio C Hamano215a7ad2005-09-08 00:26:23[diff] [blame]6. git-parse-remote
Junio C Hamano853a3692005-08-20 09:54:34[diff] [blame]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"
Linus Torvaldsb33e9662005-07-08 17:57:21[diff] [blame]9
Junio C Hamano221e7432005-10-11 06:22:02[diff] [blame]10LF='
11'
12IFS="$LF"
13
Junio C Hamano03febf92006-01-07 08:48:04[diff] [blame]14no_tags=
Linus Torvaldsed1aadf2005-09-29 21:35:15[diff] [blame]15tags=
Junio C Hamano853a3692005-08-20 09:54:34[diff] [blame]16append=
Junio C Hamanoae2da402005-08-23 04:28:33[diff] [blame]17force=
Linus Torvalds583122c2005-11-18 16:31:55[diff] [blame]18verbose=
Junio C Hamanob10ac502005-08-26 01:15:32[diff] [blame]19update_head_ok=
Junio C Hamanoae2da402005-08-23 04:28:33[diff] [blame]20while case "$#" in 0) break ;; esac
21do
22 case "$1" in
23 -a|--a|--ap|--app|--appe|--appen|--append)
24 append=t
Junio C Hamanoae2da402005-08-23 04:28:33[diff] [blame]25 ;;
26 -f|--f|--fo|--for|--forc|--force)
27 force=t
Junio C Hamanob10ac502005-08-26 01:15:32[diff] [blame]28 ;;
Linus Torvaldsed1aadf2005-09-29 21:35:15[diff] [blame]29 -t|--t|--ta|--tag|--tags)
30 tags=t
31 ;;
Junio C Hamano03febf92006-01-07 08:48:04[diff] [blame]32 -n|--n|--no|--no-|--no-t|--no-ta|--no-tag|--no-tags)
33 no_tags=t
34 ;;
Junio C Hamanob10ac502005-08-26 01:15:32[diff] [blame]35 -u|--u|--up|--upd|--upda|--updat|--update|--update-|--update-h|\
36 --update-he|--update-hea|--update-head|--update-head-|\
37 --update-head-o|--update-head-ok)
38 update_head_ok=t
Junio C Hamanoae2da402005-08-23 04:28:33[diff] [blame]39 ;;
Linus Torvalds583122c2005-11-18 16:31:55[diff] [blame]40 -v|--verbose)
41 verbose=Yes
42 ;;
freku045@student.liu.se87358b72005-12-13 22:30:31[diff] [blame]43 -*)
44 usage
45 ;;
Junio C Hamanoae2da402005-08-23 04:28:33[diff] [blame]46 *)
47 break
48 ;;
49 esac
Junio C Hamanob10ac502005-08-26 01:15:32[diff] [blame]50 shift
Junio C Hamanoae2da402005-08-23 04:28:33[diff] [blame]51done
52
Junio C Hamano853a3692005-08-20 09:54:34[diff] [blame]53case "$#" in
540)
Junio C Hamano92c533e2005-08-20 10:00:03[diff] [blame]55 test -f "$GIT_DIR/branches/origin" ||
56 test -f "$GIT_DIR/remotes/origin" ||
Junio C Hamanob10ac502005-08-26 01:15:32[diff] [blame]57 die "Where do you want to fetch from today?"
Junio C Hamano92c533e2005-08-20 10:00:03[diff] [blame]58 set origin ;;
Junio C Hamano853a3692005-08-20 09:54:34[diff] [blame]59esac
Junio C Hamanoae2da402005-08-23 04:28:33[diff] [blame]60
Junio C Hamano853a3692005-08-20 09:54:34[diff] [blame]61remote_nick="$1"
62remote=$(get_remote_url "$@")
63refs=
64rref=
65rsync_slurped_objects=
Linus Torvalds7ef76922005-05-22 18:03:24[diff] [blame]66
Junio C Hamano853a3692005-08-20 09:54:34[diff] [blame]67if test "" = "$append"
68then
Santi_Béjardf342972005-10-05 16:58:10[diff] [blame]69 : >"$GIT_DIR/FETCH_HEAD"
Junio C Hamano853a3692005-08-20 09:54:34[diff] [blame]70fi
71
72append_fetch_head () {
73 head_="$1"
74 remote_="$2"
75 remote_name_="$3"
76 remote_nick_="$4"
77 local_name_="$5"
Junio C Hamano05dd8e22005-09-26 05:54:23[diff] [blame]78 case "$6" in
79 t) not_for_merge_='not-for-merge' ;;
80 '') not_for_merge_= ;;
81 esac
Junio C Hamano853a3692005-08-20 09:54:34[diff] [blame]82
Junio C Hamano06ec2b42005-09-02 09:34:13[diff] [blame]83 # remote-nick is the URL given on the command line (or a shorthand)
84 # remote-name is the $GIT_DIR relative refs/ path we computed
85 # for this refspec.
86 case "$remote_name_" in
87 HEAD)
88 note_= ;;
89 refs/heads/*)
90 note_="$(expr "$remote_name_" : 'refs/heads/\(.*\)')"
Junio C Hamanob91fb512005-09-21 20:59:54[diff] [blame]91 note_="branch '$note_' of " ;;
Junio C Hamano06ec2b42005-09-02 09:34:13[diff] [blame]92 refs/tags/*)
93 note_="$(expr "$remote_name_" : 'refs/tags/\(.*\)')"
Junio C Hamanob91fb512005-09-21 20:59:54[diff] [blame]94 note_="tag '$note_' of " ;;
Junio C Hamano06ec2b42005-09-02 09:34:13[diff] [blame]95 *)
Junio C Hamanob91fb512005-09-21 20:59:54[diff] [blame]96 note_="$remote_name of " ;;
Junio C Hamano06ec2b42005-09-02 09:34:13[diff] [blame]97 esac
Junio C Hamanob91fb512005-09-21 20:59:54[diff] [blame]98 remote_1_=$(expr "$remote_" : '\(.*\)\.git/*$') &&
99 remote_="$remote_1_"
100 note_="$note_$remote_"
Junio C Hamano06ec2b42005-09-02 09:34:13[diff] [blame]101
Junio C Hamano853a3692005-08-20 09:54:34[diff] [blame]102 # 2.6.11-tree tag would not be happy to be fed to resolve.
103 if git-cat-file commit "$head_" >/dev/null 2>&1
104 then
Junio C Hamano8572aa82005-08-25 05:46:07[diff] [blame]105 headc_=$(git-rev-parse --verify "$head_^0") || exit
Santi_Béjardf342972005-10-05 16:58:10[diff] [blame]106 echo "$headc_ $not_for_merge_ $note_" >>"$GIT_DIR/FETCH_HEAD"
Linus Torvalds583122c2005-11-18 16:31:55[diff] [blame]107 [ "$verbose" ] && echo >&2 "* committish: $head_"
108 [ "$verbose" ] && echo >&2 " $note_"
Junio C Hamano853a3692005-08-20 09:54:34[diff] [blame]109 else
Santi_Béjardf342972005-10-05 16:58:10[diff] [blame]110 echo "$head_ not-for-merge $note_" >>"$GIT_DIR/FETCH_HEAD"
Linus Torvalds583122c2005-11-18 16:31:55[diff] [blame]111 [ "$verbose" ] && echo >&2 "* non-commit: $head_"
112 [ "$verbose" ] && echo >&2 " $note_"
Junio C Hamano853a3692005-08-20 09:54:34[diff] [blame]113 fi
114 if test "$local_name_" != ""
115 then
116 # We are storing the head locally. Make sure that it is
117 # a fast forward (aka "reverse push").
Junio C Hamano06ec2b42005-09-02 09:34:13[diff] [blame]118 fast_forward_local "$local_name_" "$head_" "$note_"
Junio C Hamano853a3692005-08-20 09:54:34[diff] [blame]119 fi
120}
121
122fast_forward_local () {
Junio C Hamano866ff2f2005-09-10 17:40:47[diff] [blame]123 mkdir -p "$(dirname "$GIT_DIR/$1")"
Junio C Hamano853a3692005-08-20 09:54:34[diff] [blame]124 case "$1" in
125 refs/tags/*)
126 # Tags need not be pointing at commits so there
127 # is no way to guarantee "fast-forward" anyway.
Junio C Hamanoae2da402005-08-23 04:28:33[diff] [blame]128 if test -f "$GIT_DIR/$1"
129 then
Junio C Hamanof8765792005-10-19 01:42:14[diff] [blame]130 if now_=$(cat "$GIT_DIR/$1") && test "$now_" = "$2"
131 then
Linus Torvalds583122c2005-11-18 16:31:55[diff] [blame]132 [ "$verbose" ] && echo >&2 "* $1: same as $3"
Junio C Hamanof8765792005-10-19 01:42:14[diff] [blame]133 else
134 echo >&2 "* $1: updating with $3"
135 fi
Junio C Hamanoae2da402005-08-23 04:28:33[diff] [blame]136 else
Junio C Hamano06ec2b42005-09-02 09:34:13[diff] [blame]137 echo >&2 "* $1: storing $3"
Junio C Hamanoae2da402005-08-23 04:28:33[diff] [blame]138 fi
Junio C Hamanobf7960e2005-09-28 01:14:27[diff] [blame]139 git-update-ref "$1" "$2"
140 ;;
Junio C Hamanoae2da402005-08-23 04:28:33[diff] [blame]141
Junio C Hamano853a3692005-08-20 09:54:34[diff] [blame]142 refs/heads/*)
Junio C Hamanobf7960e2005-09-28 01:14:27[diff] [blame]143 # $1 is the ref being updated.
144 # $2 is the new value for the ref.
145 local=$(git-rev-parse --verify "$1^0" 2>/dev/null)
146 if test "$local"
Junio C Hamano853a3692005-08-20 09:54:34[diff] [blame]147 then
Junio C Hamanobf7960e2005-09-28 01:14:27[diff] [blame]148 # Require fast-forward.
Junio C Hamano853a3692005-08-20 09:54:34[diff] [blame]149 mb=$(git-merge-base "$local" "$2") &&
150 case "$2,$mb" in
151 $local,*)
Junio C Hamano06ec2b42005-09-02 09:34:13[diff] [blame]152 echo >&2 "* $1: same as $3"
Junio C Hamano853a3692005-08-20 09:54:34[diff] [blame]153 ;;
154 *,$local)
Junio C Hamano06ec2b42005-09-02 09:34:13[diff] [blame]155 echo >&2 "* $1: fast forward to $3"
Junio C Hamanobf7960e2005-09-28 01:14:27[diff] [blame]156 git-update-ref "$1" "$2" "$local"
Junio C Hamano853a3692005-08-20 09:54:34[diff] [blame]157 ;;
158 *)
159 false
160 ;;
161 esac || {
Junio C Hamano06ec2b42005-09-02 09:34:13[diff] [blame]162 echo >&2 "* $1: does not fast forward to $3;"
Junio C Hamanobf7960e2005-09-28 01:14:27[diff] [blame]163 case ",$force,$single_force," in
164 *,t,*)
Junio C Hamano06ec2b42005-09-02 09:34:13[diff] [blame]165 echo >&2 " forcing update."
Junio C Hamanobf7960e2005-09-28 01:14:27[diff] [blame]166 git-update-ref "$1" "$2" "$local"
Junio C Hamanoae2da402005-08-23 04:28:33[diff] [blame]167 ;;
168 *)
Junio C Hamanobf7960e2005-09-28 01:14:27[diff] [blame]169 echo >&2 " not updating."
Junio C Hamanoae2da402005-08-23 04:28:33[diff] [blame]170 ;;
171 esac
Junio C Hamano853a3692005-08-20 09:54:34[diff] [blame]172 }
173 else
Junio C Hamanobf7960e2005-09-28 01:14:27[diff] [blame]174 echo >&2 "* $1: storing $3"
175 git-update-ref "$1" "$2"
Junio C Hamano853a3692005-08-20 09:54:34[diff] [blame]176 fi
Linus Torvalds0a623e72005-07-05 18:38:37[diff] [blame]177 ;;
Junio C Hamano853a3692005-08-20 09:54:34[diff] [blame]178 esac
179}
180
Junio C Hamanob10ac502005-08-26 01:15:32[diff] [blame]181case "$update_head_ok" in
182'')
Junio C Hamanobf7960e2005-09-28 01:14:27[diff] [blame]183 orig_head=$(git-rev-parse --verify HEAD 2>/dev/null)
Junio C Hamanob10ac502005-08-26 01:15:32[diff] [blame]184 ;;
185esac
186
Linus Torvaldsed1aadf2005-09-29 21:35:15[diff] [blame]187# If --tags (and later --heads or --all) is specified, then we are
188# not talking about defaults stored in Pull: line of remotes or
189# branches file, and just fetch those and refspecs explicitly given.
190# Otherwise we do what we always did.
191
192reflist=$(get_remote_refs_for_fetch "$@")
193if test "$tags"
194then
Junio C Hamano81214e42006-01-06 03:42:12[diff] [blame]195 taglist=$(IFS=" " &&
196 git-ls-remote --tags "$remote" |
197 while read sha1 name
198 do
199 case "$name" in
200 (*^*) continue ;;
201 esac
202 if git-check-ref-format "$name"
203 then
204 echo ".${name}:${name}"
205 else
206 echo >&2 "warning: tag ${name} ignored"
207 fi
208 done)
Linus Torvaldsed1aadf2005-09-29 21:35:15[diff] [blame]209 if test "$#" -gt 1
210 then
211 # remote URL plus explicit refspecs; we need to merge them.
Junio C Hamano221e7432005-10-11 06:22:02[diff] [blame]212 reflist="$reflist$LF$taglist"
Linus Torvaldsed1aadf2005-09-29 21:35:15[diff] [blame]213 else
214 # No explicit refspecs; fetch tags only.
215 reflist=$taglist
216 fi
217fi
218
Junio C Hamano03febf92006-01-07 08:48:04[diff] [blame]219fetch_main () {
220 reflist="$1"
221 refs=
Junio C Hamano853a3692005-08-20 09:54:34[diff] [blame]222
Junio C Hamano03febf92006-01-07 08:48:04[diff] [blame]223 for ref in $reflist
224 do
225 refs="$refs$LF$ref"
Junio C Hamano853a3692005-08-20 09:54:34[diff] [blame]226
Junio C Hamano03febf92006-01-07 08:48:04[diff] [blame]227 # These are relative path from $GIT_DIR, typically starting at refs/
228 # but may be HEAD
229 if expr "$ref" : '\.' >/dev/null
230 then
231 not_for_merge=t
232 ref=$(expr "$ref" : '\.\(.*\)')
233 else
234 not_for_merge=
235 fi
236 if expr "$ref" : '\+' >/dev/null
237 then
238 single_force=t
239 ref=$(expr "$ref" : '\+\(.*\)')
240 else
241 single_force=
242 fi
243 remote_name=$(expr "$ref" : '\([^:]*\):')
244 local_name=$(expr "$ref" : '[^:]*:\(.*\)')
Junio C Hamano853a3692005-08-20 09:54:34[diff] [blame]245
Junio C Hamano03febf92006-01-07 08:48:04[diff] [blame]246 rref="$rref$LF$remote_name"
Junio C Hamano4447bad2005-09-17 18:56:41[diff] [blame]247
Junio C Hamano03febf92006-01-07 08:48:04[diff] [blame]248 # There are transports that can fetch only one head at a time...
249 case "$remote" in
250 http://* | https://*)
251 if [ -n "$GIT_SSL_NO_VERIFY" ]; then
252 curl_extra_args="-k"
253 fi
254 remote_name_quoted=$(perl -e '
255 my $u = $ARGV[0];
256 $u =~ s{([^-a-zA-Z0-9/.])}{sprintf"%%%02x",ord($1)}eg;
257 print "$u";
258 ' "$remote_name")
259 head=$(curl -nsfL $curl_extra_args "$remote/$remote_name_quoted") &&
260 expr "$head" : "$_x40\$" >/dev/null ||
261 die "Failed to fetch $remote_name from $remote"
262 echo >&2 Fetching "$remote_name from $remote" using http
263 git-http-fetch -v -a "$head" "$remote/" || exit
264 ;;
265 rsync://*)
266 TMP_HEAD="$GIT_DIR/TMP_HEAD"
267 rsync -L -q "$remote/$remote_name" "$TMP_HEAD" || exit 1
268 head=$(git-rev-parse --verify TMP_HEAD)
269 rm -f "$TMP_HEAD"
270 test "$rsync_slurped_objects" || {
271 rsync -av --ignore-existing --exclude info \
272 "$remote/objects/" "$GIT_OBJECT_DIRECTORY/" || exit
Junio C Hamano853a3692005-08-20 09:54:34[diff] [blame]273
Junio C Hamano03febf92006-01-07 08:48:04[diff] [blame]274 # Look at objects/info/alternates for rsync -- http will
275 # support it natively and git native ones will do it on
276 # the remote end. Not having that file is not a crime.
277 rsync -q "$remote/objects/info/alternates" \
278 "$GIT_DIR/TMP_ALT" 2>/dev/null ||
279 rm -f "$GIT_DIR/TMP_ALT"
280 if test -f "$GIT_DIR/TMP_ALT"
281 then
282 resolve_alternates "$remote" <"$GIT_DIR/TMP_ALT" |
283 while read alt
284 do
285 case "$alt" in 'bad alternate: '*) die "$alt";; esac
286 echo >&2 "Getting alternate: $alt"
287 rsync -av --ignore-existing --exclude info \
288 "$alt" "$GIT_OBJECT_DIRECTORY/" || exit
289 done
290 rm -f "$GIT_DIR/TMP_ALT"
291 fi
292 rsync_slurped_objects=t
293 }
294 ;;
295 *)
296 # We will do git native transport with just one call later.
297 continue ;;
298 esac
Junio C Hamano853a3692005-08-20 09:54:34[diff] [blame]299
Junio C Hamano03febf92006-01-07 08:48:04[diff] [blame]300 append_fetch_head "$head" "$remote" \
301 "$remote_name" "$remote_nick" "$local_name" "$not_for_merge"
Junio C Hamano853a3692005-08-20 09:54:34[diff] [blame]302
Junio C Hamano03febf92006-01-07 08:48:04[diff] [blame]303 done
304
305 case "$remote" in
306 http://* | https://* | rsync://* )
307 ;; # we are already done.
308 *)
309 ( : subshell because we muck with IFS
310 IFS=" $LF"
311 (
312 git-fetch-pack "$remote" $rref || echo failed "$remote"
313 ) |
314 while read sha1 remote_name
315 do
316 case "$sha1" in
317 failed)
318 echo >&2 "Fetch failure: $remote"
319 exit 1 ;;
320 esac
321 found=
322 single_force=
323 for ref in $refs
324 do
325 case "$ref" in
326 +$remote_name:*)
327 single_force=t
328 not_for_merge=
329 found="$ref"
330 break ;;
331 .+$remote_name:*)
332 single_force=t
333 not_for_merge=t
334 found="$ref"
335 break ;;
336 .$remote_name:*)
337 not_for_merge=t
338 found="$ref"
339 break ;;
340 $remote_name:*)
341 not_for_merge=
342 found="$ref"
343 break ;;
344 esac
345 done
346 local_name=$(expr "$found" : '[^:]*:\(.*\)')
347 append_fetch_head "$sha1" "$remote" \
348 "$remote_name" "$remote_nick" "$local_name" "$not_for_merge"
349 done
350 ) || exit ;;
351 esac
352
353}
354
355fetch_main "$reflist"
356
357# automated tag following
358case "$no_tags$tags" in
359'')
360 taglist=$(IFS=" " &&
361 git-ls-remote --tags "$remote" |
362 sed -ne 's|^\([0-9a-f]*\)[ ]\(refs/tags/.*\)^{}$|\1 \2|p' |
363 while read sha1 name
Junio C Hamano853a3692005-08-20 09:54:34[diff] [blame]364 do
Junio C Hamano03febf92006-01-07 08:48:04[diff] [blame]365 test -f "$GIT_DIR/$name" && continue
366 git-check-ref-format "$name" || {
367 echo >&2 "warning: tag ${name} ignored"
368 continue
369 }
370 git-cat-file -t "$sha1" >/dev/null 2>&1 || continue
371 echo >&2 "Auto-following $name"
372 echo ".${name}:${name}"
373 done)
374 case "$taglist" in
375 '') ;;
376 ?*)
377 fetch_main "$taglist" ;;
378 esac
Junio C Hamano853a3692005-08-20 09:54:34[diff] [blame]379esac
Junio C Hamanob10ac502005-08-26 01:15:32[diff] [blame]380
381# If the original head was empty (i.e. no "master" yet), or
382# if we were told not to worry, we do not have to check.
383case ",$update_head_ok,$orig_head," in
384*,, | t,* )
385 ;;
386*)
Junio C Hamanobf7960e2005-09-28 01:14:27[diff] [blame]387 curr_head=$(git-rev-parse --verify HEAD 2>/dev/null)
Junio C Hamanob10ac502005-08-26 01:15:32[diff] [blame]388 if test "$curr_head" != "$orig_head"
389 then
Junio C Hamanobf7960e2005-09-28 01:14:27[diff] [blame]390 git-update-ref HEAD "$orig_head"
Junio C Hamanob10ac502005-08-26 01:15:32[diff] [blame]391 die "Cannot fetch into the current branch."
392 fi
393 ;;
394esac