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Commit | Line | Data |
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7ef76925 LT |
1 | #!/bin/sh |
2 | # | |
87358b7a FK |
3 | |
4 | USAGE='<fetch-options> <repository> <refspec>...' | |
ae2b0f15 | 5 | . git-sh-setup |
215a7ad1 | 6 | . git-parse-remote |
853a3697 JH |
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" | |
9 | ||
221e743c JH |
10 | LF=' |
11 | ' | |
12 | IFS="$LF" | |
13 | ||
03febf99 | 14 | no_tags= |
ed1aadf1 | 15 | tags= |
853a3697 | 16 | append= |
ae2da406 | 17 | force= |
583122cd | 18 | verbose= |
b10ac50f | 19 | update_head_ok= |
2c620a1a | 20 | exec= |
96b086d6 | 21 | upload_pack= |
ae2da406 JH |
22 | while case "$#" in 0) break ;; esac |
23 | do | |
24 | case "$1" in | |
25 | -a|--a|--ap|--app|--appe|--appen|--append) | |
26 | append=t | |
ae2da406 | 27 | ;; |
2796a9de JH |
28 | --upl|--uplo|--uploa|--upload|--upload-|--upload-p|\ |
29 | --upload-pa|--upload-pac|--upload-pack) | |
2c620a1a MO |
30 | shift |
31 | exec="--exec=$1" | |
96b086d6 | 32 | upload_pack="-u $1" |
2c620a1a | 33 | ;; |
ae2da406 JH |
34 | -f|--f|--fo|--for|--forc|--force) |
35 | force=t | |
b10ac50f | 36 | ;; |
ed1aadf1 LT |
37 | -t|--t|--ta|--tag|--tags) |
38 | tags=t | |
39 | ;; | |
03febf99 JH |
40 | -n|--n|--no|--no-|--no-t|--no-ta|--no-tag|--no-tags) |
41 | no_tags=t | |
42 | ;; | |
b10ac50f JH |
43 | -u|--u|--up|--upd|--upda|--updat|--update|--update-|--update-h|\ |
44 | --update-he|--update-hea|--update-head|--update-head-|\ | |
45 | --update-head-o|--update-head-ok) | |
46 | update_head_ok=t | |
ae2da406 | 47 | ;; |
583122cd LT |
48 | -v|--verbose) |
49 | verbose=Yes | |
50 | ;; | |
0f76f526 TP |
51 | -k|--k|--ke|--kee|--keep) |
52 | keep=--keep | |
53 | ;; | |
87358b7a FK |
54 | -*) |
55 | usage | |
56 | ;; | |
ae2da406 JH |
57 | *) |
58 | break | |
59 | ;; | |
60 | esac | |
b10ac50f | 61 | shift |
ae2da406 JH |
62 | done |
63 | ||
853a3697 JH |
64 | case "$#" in |
65 | 0) | |
92c533ef JH |
66 | test -f "$GIT_DIR/branches/origin" || |
67 | test -f "$GIT_DIR/remotes/origin" || | |
b10ac50f | 68 | die "Where do you want to fetch from today?" |
92c533ef | 69 | set origin ;; |
853a3697 | 70 | esac |
ae2da406 | 71 | |
853a3697 JH |
72 | remote_nick="$1" |
73 | remote=$(get_remote_url "$@") | |
74 | refs= | |
75 | rref= | |
76 | rsync_slurped_objects= | |
77 | ||
78 | if test "" = "$append" | |
79 | then | |
df34297a | 80 | : >"$GIT_DIR/FETCH_HEAD" |
853a3697 JH |
81 | fi |
82 | ||
83 | append_fetch_head () { | |
84 | head_="$1" | |
85 | remote_="$2" | |
86 | remote_name_="$3" | |
87 | remote_nick_="$4" | |
88 | local_name_="$5" | |
05dd8e2e JH |
89 | case "$6" in |
90 | t) not_for_merge_='not-for-merge' ;; | |
91 | '') not_for_merge_= ;; | |
92 | esac | |
853a3697 | 93 | |
06ec2b4b JH |
94 | # remote-nick is the URL given on the command line (or a shorthand) |
95 | # remote-name is the $GIT_DIR relative refs/ path we computed | |
96 | # for this refspec. | |
97 | case "$remote_name_" in | |
98 | HEAD) | |
99 | note_= ;; | |
100 | refs/heads/*) | |
101 | note_="$(expr "$remote_name_" : 'refs/heads/\(.*\)')" | |
b91fb518 | 102 | note_="branch '$note_' of " ;; |
06ec2b4b JH |
103 | refs/tags/*) |
104 | note_="$(expr "$remote_name_" : 'refs/tags/\(.*\)')" | |
b91fb518 | 105 | note_="tag '$note_' of " ;; |
06ec2b4b | 106 | *) |
b91fb518 | 107 | note_="$remote_name of " ;; |
06ec2b4b | 108 | esac |
b91fb518 JH |
109 | remote_1_=$(expr "$remote_" : '\(.*\)\.git/*$') && |
110 | remote_="$remote_1_" | |
111 | note_="$note_$remote_" | |
06ec2b4b | 112 | |
853a3697 JH |
113 | # 2.6.11-tree tag would not be happy to be fed to resolve. |
114 | if git-cat-file commit "$head_" >/dev/null 2>&1 | |
115 | then | |
8572aa85 | 116 | headc_=$(git-rev-parse --verify "$head_^0") || exit |
df34297a | 117 | echo "$headc_ $not_for_merge_ $note_" >>"$GIT_DIR/FETCH_HEAD" |
583122cd LT |
118 | [ "$verbose" ] && echo >&2 "* committish: $head_" |
119 | [ "$verbose" ] && echo >&2 " $note_" | |
853a3697 | 120 | else |
df34297a | 121 | echo "$head_ not-for-merge $note_" >>"$GIT_DIR/FETCH_HEAD" |
583122cd LT |
122 | [ "$verbose" ] && echo >&2 "* non-commit: $head_" |
123 | [ "$verbose" ] && echo >&2 " $note_" | |
853a3697 JH |
124 | fi |
125 | if test "$local_name_" != "" | |
126 | then | |
127 | # We are storing the head locally. Make sure that it is | |
128 | # a fast forward (aka "reverse push"). | |
06ec2b4b | 129 | fast_forward_local "$local_name_" "$head_" "$note_" |
853a3697 JH |
130 | fi |
131 | } | |
132 | ||
133 | fast_forward_local () { | |
866ff2f7 | 134 | mkdir -p "$(dirname "$GIT_DIR/$1")" |
853a3697 JH |
135 | case "$1" in |
136 | refs/tags/*) | |
137 | # Tags need not be pointing at commits so there | |
138 | # is no way to guarantee "fast-forward" anyway. | |
ae2da406 JH |
139 | if test -f "$GIT_DIR/$1" |
140 | then | |
f8765797 JH |
141 | if now_=$(cat "$GIT_DIR/$1") && test "$now_" = "$2" |
142 | then | |
583122cd | 143 | [ "$verbose" ] && echo >&2 "* $1: same as $3" |
f8765797 JH |
144 | else |
145 | echo >&2 "* $1: updating with $3" | |
146 | fi | |
ae2da406 | 147 | else |
06ec2b4b | 148 | echo >&2 "* $1: storing $3" |
ae2da406 | 149 | fi |
bf7960eb JH |
150 | git-update-ref "$1" "$2" |
151 | ;; | |
ae2da406 | 152 | |
853a3697 | 153 | refs/heads/*) |
bf7960eb JH |
154 | # $1 is the ref being updated. |
155 | # $2 is the new value for the ref. | |
156 | local=$(git-rev-parse --verify "$1^0" 2>/dev/null) | |
157 | if test "$local" | |
33b83034 | 158 | then |
bf7960eb | 159 | # Require fast-forward. |
853a3697 JH |
160 | mb=$(git-merge-base "$local" "$2") && |
161 | case "$2,$mb" in | |
162 | $local,*) | |
06ec2b4b | 163 | echo >&2 "* $1: same as $3" |
853a3697 JH |
164 | ;; |
165 | *,$local) | |
06ec2b4b | 166 | echo >&2 "* $1: fast forward to $3" |
9d7f73d4 | 167 | echo >&2 " from $local to $2" |
bf7960eb | 168 | git-update-ref "$1" "$2" "$local" |
853a3697 JH |
169 | ;; |
170 | *) | |
171 | false | |
172 | ;; | |
173 | esac || { | |
06ec2b4b | 174 | echo >&2 "* $1: does not fast forward to $3;" |
bf7960eb JH |
175 | case ",$force,$single_force," in |
176 | *,t,*) | |
06ec2b4b | 177 | echo >&2 " forcing update." |
bf7960eb | 178 | git-update-ref "$1" "$2" "$local" |
ae2da406 JH |
179 | ;; |
180 | *) | |
bf7960eb | 181 | echo >&2 " not updating." |
ae2da406 JH |
182 | ;; |
183 | esac | |
853a3697 JH |
184 | } |
185 | else | |
bf7960eb JH |
186 | echo >&2 "* $1: storing $3" |
187 | git-update-ref "$1" "$2" | |
33b83034 | 188 | fi |
0a623e7c | 189 | ;; |
853a3697 JH |
190 | esac |
191 | } | |
192 | ||
b10ac50f JH |
193 | case "$update_head_ok" in |
194 | '') | |
bf7960eb | 195 | orig_head=$(git-rev-parse --verify HEAD 2>/dev/null) |
b10ac50f JH |
196 | ;; |
197 | esac | |
198 | ||
ed1aadf1 LT |
199 | # If --tags (and later --heads or --all) is specified, then we are |
200 | # not talking about defaults stored in Pull: line of remotes or | |
201 | # branches file, and just fetch those and refspecs explicitly given. | |
202 | # Otherwise we do what we always did. | |
203 | ||
204 | reflist=$(get_remote_refs_for_fetch "$@") | |
205 | if test "$tags" | |
206 | then | |
81214e4d | 207 | taglist=$(IFS=" " && |
96b086d6 | 208 | git-ls-remote $upload_pack --tags "$remote" | |
81214e4d JH |
209 | while read sha1 name |
210 | do | |
211 | case "$name" in | |
212 | (*^*) continue ;; | |
213 | esac | |
214 | if git-check-ref-format "$name" | |
215 | then | |
216 | echo ".${name}:${name}" | |
217 | else | |
218 | echo >&2 "warning: tag ${name} ignored" | |
219 | fi | |
220 | done) | |
ed1aadf1 LT |
221 | if test "$#" -gt 1 |
222 | then | |
223 | # remote URL plus explicit refspecs; we need to merge them. | |
221e743c | 224 | reflist="$reflist$LF$taglist" |
ed1aadf1 LT |
225 | else |
226 | # No explicit refspecs; fetch tags only. | |
227 | reflist=$taglist | |
228 | fi | |
229 | fi | |
230 | ||
03febf99 JH |
231 | fetch_main () { |
232 | reflist="$1" | |
233 | refs= | |
f170e4b3 | 234 | |
03febf99 JH |
235 | for ref in $reflist |
236 | do | |
237 | refs="$refs$LF$ref" | |
f170e4b3 | 238 | |
03febf99 JH |
239 | # These are relative path from $GIT_DIR, typically starting at refs/ |
240 | # but may be HEAD | |
241 | if expr "$ref" : '\.' >/dev/null | |
242 | then | |
243 | not_for_merge=t | |
244 | ref=$(expr "$ref" : '\.\(.*\)') | |
245 | else | |
246 | not_for_merge= | |
247 | fi | |
248 | if expr "$ref" : '\+' >/dev/null | |
249 | then | |
250 | single_force=t | |
251 | ref=$(expr "$ref" : '\+\(.*\)') | |
252 | else | |
253 | single_force= | |
254 | fi | |
255 | remote_name=$(expr "$ref" : '\([^:]*\):') | |
256 | local_name=$(expr "$ref" : '[^:]*:\(.*\)') | |
853a3697 | 257 | |
03febf99 | 258 | rref="$rref$LF$remote_name" |
4447badc | 259 | |
03febf99 JH |
260 | # There are transports that can fetch only one head at a time... |
261 | case "$remote" in | |
262 | http://* | https://*) | |
263 | if [ -n "$GIT_SSL_NO_VERIFY" ]; then | |
264 | curl_extra_args="-k" | |
265 | fi | |
266 | remote_name_quoted=$(perl -e ' | |
267 | my $u = $ARGV[0]; | |
268 | $u =~ s{([^-a-zA-Z0-9/.])}{sprintf"%%%02x",ord($1)}eg; | |
269 | print "$u"; | |
270 | ' "$remote_name") | |
271 | head=$(curl -nsfL $curl_extra_args "$remote/$remote_name_quoted") && | |
272 | expr "$head" : "$_x40\$" >/dev/null || | |
273 | die "Failed to fetch $remote_name from $remote" | |
274 | echo >&2 Fetching "$remote_name from $remote" using http | |
275 | git-http-fetch -v -a "$head" "$remote/" || exit | |
276 | ;; | |
277 | rsync://*) | |
278 | TMP_HEAD="$GIT_DIR/TMP_HEAD" | |
279 | rsync -L -q "$remote/$remote_name" "$TMP_HEAD" || exit 1 | |
280 | head=$(git-rev-parse --verify TMP_HEAD) | |
281 | rm -f "$TMP_HEAD" | |
282 | test "$rsync_slurped_objects" || { | |
283 | rsync -av --ignore-existing --exclude info \ | |
284 | "$remote/objects/" "$GIT_OBJECT_DIRECTORY/" || exit | |
853a3697 | 285 | |
03febf99 JH |
286 | # Look at objects/info/alternates for rsync -- http will |
287 | # support it natively and git native ones will do it on | |
288 | # the remote end. Not having that file is not a crime. | |
289 | rsync -q "$remote/objects/info/alternates" \ | |
290 | "$GIT_DIR/TMP_ALT" 2>/dev/null || | |
291 | rm -f "$GIT_DIR/TMP_ALT" | |
292 | if test -f "$GIT_DIR/TMP_ALT" | |
293 | then | |
294 | resolve_alternates "$remote" <"$GIT_DIR/TMP_ALT" | | |
295 | while read alt | |
296 | do | |
297 | case "$alt" in 'bad alternate: '*) die "$alt";; esac | |
298 | echo >&2 "Getting alternate: $alt" | |
299 | rsync -av --ignore-existing --exclude info \ | |
300 | "$alt" "$GIT_OBJECT_DIRECTORY/" || exit | |
301 | done | |
302 | rm -f "$GIT_DIR/TMP_ALT" | |
303 | fi | |
304 | rsync_slurped_objects=t | |
305 | } | |
306 | ;; | |
307 | *) | |
308 | # We will do git native transport with just one call later. | |
309 | continue ;; | |
310 | esac | |
f170e4b3 | 311 | |
03febf99 JH |
312 | append_fetch_head "$head" "$remote" \ |
313 | "$remote_name" "$remote_nick" "$local_name" "$not_for_merge" | |
853a3697 | 314 | |
03febf99 JH |
315 | done |
316 | ||
317 | case "$remote" in | |
318 | http://* | https://* | rsync://* ) | |
319 | ;; # we are already done. | |
320 | *) | |
321 | ( : subshell because we muck with IFS | |
322 | IFS=" $LF" | |
323 | ( | |
b19696c2 | 324 | git-fetch-pack $exec $keep --thin "$remote" $rref || echo failed "$remote" |
03febf99 JH |
325 | ) | |
326 | while read sha1 remote_name | |
327 | do | |
328 | case "$sha1" in | |
329 | failed) | |
330 | echo >&2 "Fetch failure: $remote" | |
331 | exit 1 ;; | |
332 | esac | |
333 | found= | |
334 | single_force= | |
335 | for ref in $refs | |
336 | do | |
337 | case "$ref" in | |
338 | +$remote_name:*) | |
339 | single_force=t | |
340 | not_for_merge= | |
341 | found="$ref" | |
342 | break ;; | |
343 | .+$remote_name:*) | |
344 | single_force=t | |
345 | not_for_merge=t | |
346 | found="$ref" | |
347 | break ;; | |
348 | .$remote_name:*) | |
349 | not_for_merge=t | |
350 | found="$ref" | |
351 | break ;; | |
352 | $remote_name:*) | |
353 | not_for_merge= | |
354 | found="$ref" | |
355 | break ;; | |
356 | esac | |
357 | done | |
358 | local_name=$(expr "$found" : '[^:]*:\(.*\)') | |
359 | append_fetch_head "$sha1" "$remote" \ | |
360 | "$remote_name" "$remote_nick" "$local_name" "$not_for_merge" | |
361 | done | |
362 | ) || exit ;; | |
363 | esac | |
364 | ||
365 | } | |
366 | ||
367 | fetch_main "$reflist" | |
368 | ||
369 | # automated tag following | |
370 | case "$no_tags$tags" in | |
371 | '') | |
6dc78e69 JH |
372 | case "$reflist" in |
373 | *:refs/*) | |
374 | # effective only when we are following remote branch | |
375 | # using local tracking branch. | |
376 | taglist=$(IFS=" " && | |
377 | git-ls-remote $upload_pack --tags "$remote" | | |
378 | sed -ne 's|^\([0-9a-f]*\)[ ]\(refs/tags/.*\)^{}$|\1 \2|p' | | |
379 | while read sha1 name | |
380 | do | |
381 | test -f "$GIT_DIR/$name" && continue | |
382 | git-check-ref-format "$name" || { | |
383 | echo >&2 "warning: tag ${name} ignored" | |
384 | continue | |
385 | } | |
386 | git-cat-file -t "$sha1" >/dev/null 2>&1 || continue | |
387 | echo >&2 "Auto-following $name" | |
388 | echo ".${name}:${name}" | |
389 | done) | |
390 | esac | |
03febf99 JH |
391 | case "$taglist" in |
392 | '') ;; | |
393 | ?*) | |
394 | fetch_main "$taglist" ;; | |
395 | esac | |
853a3697 | 396 | esac |
b10ac50f JH |
397 | |
398 | # If the original head was empty (i.e. no "master" yet), or | |
399 | # if we were told not to worry, we do not have to check. | |
400 | case ",$update_head_ok,$orig_head," in | |
401 | *,, | t,* ) | |
402 | ;; | |
403 | *) | |
bf7960eb | 404 | curr_head=$(git-rev-parse --verify HEAD 2>/dev/null) |
b10ac50f JH |
405 | if test "$curr_head" != "$orig_head" |
406 | then | |
bf7960eb | 407 | git-update-ref HEAD "$orig_head" |
b10ac50f JH |
408 | die "Cannot fetch into the current branch." |
409 | fi | |
410 | ;; | |
411 | esac |