1#!/bin/sh
2# git-ls-remote could be called from outside a git managed repository;
4# this would fail in that case and would issue an error message.
5GIT_DIR=$(git-rev-parse --git-dir 2>/dev/null) || :;
6get_data_source () {
8 case "$1" in
9 */*)
10 echo ''
11 ;;
12 *)
13 if test "$(git-config --get "remote.$1.url")"
14 then
15 echo config
16 elif test -f "$GIT_DIR/remotes/$1"
17 then
18 echo remotes
19 elif test -f "$GIT_DIR/branches/$1"
20 then
21 echo branches
22 else
23 echo ''
24 fi ;;
25 esac
26}
27get_remote_url () {
29 data_source=$(get_data_source "$1")
30 case "$data_source" in
31 '')
32 echo "$1"
33 ;;
34 config)
35 git-config --get "remote.$1.url"
36 ;;
37 remotes)
38 sed -ne '/^URL: */{
39 s///p
40 q
41 }' "$GIT_DIR/remotes/$1"
42 ;;
43 branches)
44 sed -e 's/#.*//' "$GIT_DIR/branches/$1"
45 ;;
46 *)
47 die "internal error: get-remote-url $1" ;;
48 esac
49}
50get_default_remote () {
52 curr_branch=$(git-symbolic-ref -q HEAD | sed -e 's|^refs/heads/||')
53 origin=$(git-config --get "branch.$curr_branch.remote")
54 echo ${origin:-origin}
55}
56get_remote_default_refs_for_push () {
58 data_source=$(get_data_source "$1")
59 case "$data_source" in
60 '' | branches)
61 ;; # no default push mapping, just send matching refs.
62 config)
63 git-config --get-all "remote.$1.push" ;;
64 remotes)
65 sed -ne '/^Push: */{
66 s///p
67 }' "$GIT_DIR/remotes/$1" ;;
68 *)
69 die "internal error: get-remote-default-ref-for-push $1" ;;
70 esac
71}
72# Called from canon_refs_list_for_fetch -d "$remote", which
74# is called from get_remote_default_refs_for_fetch to grok
75# refspecs that are retrieved from the configuration, but not
76# from get_remote_refs_for_fetch when it deals with refspecs
77# supplied on the command line. $ls_remote_result has the list
78# of refs available at remote.
79#
80# The first token returned is either "explicit" or "glob"; this
81# is to help prevent randomly "globbed" ref from being chosen as
82# a merge candidate
83expand_refs_wildcard () {
84 echo "$ls_remote_result" |
85 git fetch--tool expand-refs-wildcard "-" "$@"
86}
87# Subroutine to canonicalize remote:local notation.
89canon_refs_list_for_fetch () {
90 # If called from get_remote_default_refs_for_fetch
91 # leave the branches in branch.${curr_branch}.merge alone,
92 # or the first one otherwise; add prefix . to the rest
93 # to prevent the secondary branches to be merged by default.
94 merge_branches=
95 curr_branch=
96 if test "$1" = "-d"
97 then
98 shift ; remote="$1" ; shift
99 set $(expand_refs_wildcard "$remote" "$@")
100 is_explicit="$1"
101 shift
102 if test "$remote" = "$(get_default_remote)"
103 then
104 curr_branch=$(git-symbolic-ref -q HEAD | \
105 sed -e 's|^refs/heads/||')
106 merge_branches=$(git-config \
107 --get-all "branch.${curr_branch}.merge")
108 fi
109 if test -z "$merge_branches" && test $is_explicit != explicit
110 then
111 merge_branches=..this.will.never.match.any.ref..
112 fi
113 fi
114 for ref
115 do
116 force=
117 case "$ref" in
118 +*)
119 ref=$(expr "z$ref" : 'z+\(.*\)')
120 force=+
121 ;;
122 esac
123 expr "z$ref" : 'z.*:' >/dev/null || ref="${ref}:"
124 remote=$(expr "z$ref" : 'z\([^:]*\):')
125 local=$(expr "z$ref" : 'z[^:]*:\(.*\)')
126 dot_prefix=.
127 if test -z "$merge_branches"
128 then
129 merge_branches=$remote
130 dot_prefix=
131 else
132 for merge_branch in $merge_branches
133 do
134 [ "$remote" = "$merge_branch" ] &&
135 dot_prefix= && break
136 done
137 fi
138 case "$remote" in
139 '' | HEAD ) remote=HEAD ;;
140 refs/heads/* | refs/tags/* | refs/remotes/*) ;;
141 heads/* | tags/* | remotes/* ) remote="refs/$remote" ;;
142 *) remote="refs/heads/$remote" ;;
143 esac
144 case "$local" in
145 '') local= ;;
146 refs/heads/* | refs/tags/* | refs/remotes/*) ;;
147 heads/* | tags/* | remotes/* ) local="refs/$local" ;;
148 *) local="refs/heads/$local" ;;
149 esac
150 if local_ref_name=$(expr "z$local" : 'zrefs/\(.*\)')
152 then
153 git-check-ref-format "$local_ref_name" ||
154 die "* refusing to create funny ref '$local_ref_name' locally"
155 fi
156 echo "${dot_prefix}${force}${remote}:${local}"
157 done
158}
159# Returns list of src: (no store), or src:dst (store)
161get_remote_default_refs_for_fetch () {
162 data_source=$(get_data_source "$1")
163 case "$data_source" in
164 '')
165 echo "HEAD:" ;;
166 config)
167 canon_refs_list_for_fetch -d "$1" \
168 $(git-config --get-all "remote.$1.fetch") ;;
169 branches)
170 remote_branch=$(sed -ne '/#/s/.*#//p' "$GIT_DIR/branches/$1")
171 case "$remote_branch" in '') remote_branch=master ;; esac
172 echo "refs/heads/${remote_branch}:refs/heads/$1"
173 ;;
174 remotes)
175 canon_refs_list_for_fetch -d "$1" $(sed -ne '/^Pull: */{
176 s///p
177 }' "$GIT_DIR/remotes/$1")
178 ;;
179 *)
180 die "internal error: get-remote-default-ref-for-push $1" ;;
181 esac
182}
183get_remote_refs_for_push () {
185 case "$#" in
186 0) die "internal error: get-remote-refs-for-push." ;;
187 1) get_remote_default_refs_for_push "$@" ;;
188 *) shift; echo "$@" ;;
189 esac
190}
191get_remote_refs_for_fetch () {
193 case "$#" in
194 0)
195 die "internal error: get-remote-refs-for-fetch." ;;
196 1)
197 get_remote_default_refs_for_fetch "$@" ;;
198 *)
199 shift
200 tag_just_seen=
201 for ref
202 do
203 if test "$tag_just_seen"
204 then
205 echo "refs/tags/${ref}:refs/tags/${ref}"
206 tag_just_seen=
207 continue
208 else
209 case "$ref" in
210 tag)
211 tag_just_seen=yes
212 continue
213 ;;
214 esac
215 fi
216 canon_refs_list_for_fetch "$ref"
217 done
218 ;;
219 esac
220}
221resolve_alternates () {
223 # original URL (xxx.git)
224 top_=`expr "z$1" : 'z\([^:]*:/*[^/]*\)/'`
225 while read path
226 do
227 case "$path" in
228 \#* | '')
229 continue ;;
230 /*)
231 echo "$top_$path/" ;;
232 ../*)
233 # relative -- ugly but seems to work.
234 echo "$1/objects/$path/" ;;
235 *)
236 # exit code may not be caught by the reader.
237 echo "bad alternate: $path"
238 exit 1 ;;
239 esac
240 done
241}
242get_uploadpack () {
244 data_source=$(get_data_source "$1")
245 case "$data_source" in
246 config)
247 uplp=$(git-config --get "remote.$1.uploadpack")
248 echo ${uplp:-git-upload-pack}
249 ;;
250 *)
251 echo "git-upload-pack"
252 ;;
253 esac
254}