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git-fetch: resolve remote symrefs for HTTP transport

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git-fetch validates that a remote ref resolves to a SHA1 prior to calling
git-http-fetch.  This adds support for resolving a few levels of symrefs
to get to the SHA1.

Signed-off-by: Nick Hengeveld <nickh@reactrix.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
This commit is contained in:
Nick Hengeveld 2006-04-26 09:10:01 -07:00 committed by Junio C Hamano
parent 69bcc43eca
commit 093b068891
1 changed files with 12 additions and 4 deletions
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12
git-fetch.sh
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@ -270,12 +270,20 @@ fetch_main () {
if [ -n "$GIT_SSL_NO_VERIFY" ]; then if [ -n "$GIT_SSL_NO_VERIFY" ]; then
curl_extra_args="-k" curl_extra_args="-k"
fi fi
max_depth=5
depth=0
head="ref: $remote_name"
while (expr "z$head" : "zref:" && expr $depth \< $max_depth) >/dev/null
do
remote_name_quoted=$(perl -e ' remote_name_quoted=$(perl -e '
my $u = $ARGV[0]; my $u = $ARGV[0];
$u =~ s/^ref:\s*//;
$u =~ s{([^-a-zA-Z0-9/.])}{sprintf"%%%02x",ord($1)}eg; $u =~ s{([^-a-zA-Z0-9/.])}{sprintf"%%%02x",ord($1)}eg;
print "$u"; print "$u";
' "$remote_name") ' "$head")
head=$(curl -nsfL $curl_extra_args "$remote/$remote_name_quoted") && head=$(curl -nsfL $curl_extra_args "$remote/$remote_name_quoted")
depth=$( expr \( $depth + 1 \) )
done
expr "z$head" : "z$_x40\$" >/dev/null || expr "z$head" : "z$_x40\$" >/dev/null ||
die "Failed to fetch $remote_name from $remote" die "Failed to fetch $remote_name from $remote"
echo >&2 Fetching "$remote_name from $remote" using http echo >&2 Fetching "$remote_name from $remote" using http