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413 lines
9.9 KiB
413 lines
9.9 KiB
#!/bin/sh |
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# |
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# Copyright (c) 2005, Linus Torvalds |
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# Copyright (c) 2005, Junio C Hamano |
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# |
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# Clone a repository into a different directory that does not yet exist. |
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# See git-sh-setup why. |
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unset CDPATH |
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die() { |
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echo >&2 "$@" |
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exit 1 |
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} |
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usage() { |
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die "Usage: $0 [--template=<template_directory>] [--reference <reference-repo>] [--bare] [-l [-s]] [-q] [-u <upload-pack>] [--origin <name>] [--depth <n>] [-n] <repo> [<dir>]" |
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} |
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get_repo_base() { |
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( |
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cd "`/bin/pwd`" && |
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cd "$1" && |
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{ |
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cd .git 2>/dev/null |
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pwd |
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} |
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) |
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} |
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if [ -n "$GIT_SSL_NO_VERIFY" ]; then |
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curl_extra_args="-k" |
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fi |
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http_fetch () { |
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# $1 = Remote, $2 = Local |
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curl -nsfL $curl_extra_args "$1" >"$2" |
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} |
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clone_dumb_http () { |
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# $1 - remote, $2 - local |
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cd "$2" && |
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clone_tmp="$GIT_DIR/clone-tmp" && |
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mkdir -p "$clone_tmp" || exit 1 |
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if [ -n "$GIT_CURL_FTP_NO_EPSV" -o \ |
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"`git-config --bool http.noEPSV`" = true ]; then |
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curl_extra_args="${curl_extra_args} --disable-epsv" |
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fi |
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http_fetch "$1/info/refs" "$clone_tmp/refs" || |
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die "Cannot get remote repository information. |
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Perhaps git-update-server-info needs to be run there?" |
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test "z$quiet" = z && v=-v || v= |
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while read sha1 refname |
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do |
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name=`expr "z$refname" : 'zrefs/\(.*\)'` && |
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case "$name" in |
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*^*) continue;; |
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esac |
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case "$bare,$name" in |
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yes,* | ,heads/* | ,tags/*) ;; |
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*) continue ;; |
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esac |
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if test -n "$use_separate_remote" && |
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branch_name=`expr "z$name" : 'zheads/\(.*\)'` |
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then |
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tname="remotes/$origin/$branch_name" |
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else |
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tname=$name |
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fi |
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git-http-fetch $v -a -w "$tname" "$sha1" "$1" || exit 1 |
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done <"$clone_tmp/refs" |
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rm -fr "$clone_tmp" |
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http_fetch "$1/HEAD" "$GIT_DIR/REMOTE_HEAD" || |
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rm -f "$GIT_DIR/REMOTE_HEAD" |
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} |
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quiet= |
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local=no |
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use_local=no |
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local_shared=no |
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unset template |
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no_checkout= |
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upload_pack= |
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bare= |
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reference= |
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origin= |
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origin_override= |
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use_separate_remote=t |
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depth= |
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no_progress= |
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test -t 1 || no_progress=--no-progress |
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while |
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case "$#,$1" in |
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0,*) break ;; |
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*,-n|*,--no|*,--no-|*,--no-c|*,--no-ch|*,--no-che|*,--no-chec|\ |
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*,--no-check|*,--no-checko|*,--no-checkou|*,--no-checkout) |
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no_checkout=yes ;; |
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*,--na|*,--nak|*,--nake|*,--naked|\ |
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*,-b|*,--b|*,--ba|*,--bar|*,--bare) bare=yes ;; |
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*,-l|*,--l|*,--lo|*,--loc|*,--loca|*,--local) use_local=yes ;; |
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*,-s|*,--s|*,--sh|*,--sha|*,--shar|*,--share|*,--shared) |
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local_shared=yes; use_local=yes ;; |
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1,--template) usage ;; |
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*,--template) |
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shift; template="--template=$1" ;; |
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*,--template=*) |
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template="$1" ;; |
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*,-q|*,--quiet) quiet=-q ;; |
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*,--use-separate-remote) ;; |
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*,--no-separate-remote) |
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die "clones are always made with separate-remote layout" ;; |
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1,--reference) usage ;; |
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*,--reference) |
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shift; reference="$1" ;; |
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*,--reference=*) |
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reference=`expr "z$1" : 'z--reference=\(.*\)'` ;; |
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*,-o|*,--or|*,--ori|*,--orig|*,--origi|*,--origin) |
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case "$2" in |
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'') |
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usage ;; |
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*/*) |
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die "'$2' is not suitable for an origin name" |
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esac |
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git-check-ref-format "heads/$2" || |
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die "'$2' is not suitable for a branch name" |
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test -z "$origin_override" || |
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die "Do not give more than one --origin options." |
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origin_override=yes |
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origin="$2"; shift |
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;; |
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1,-u|1,--upload-pack) usage ;; |
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*,-u|*,--upload-pack) |
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shift |
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upload_pack="--upload-pack=$1" ;; |
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*,--upload-pack=*) |
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upload_pack=--upload-pack=$(expr "z$1" : 'z-[^=]*=\(.*\)') ;; |
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1,--depth) usage;; |
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*,--depth) |
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shift |
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depth="--depth=$1";; |
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*,-*) usage ;; |
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*) break ;; |
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esac |
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do |
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shift |
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done |
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repo="$1" |
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test -n "$repo" || |
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die 'you must specify a repository to clone.' |
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# --bare implies --no-checkout and --no-separate-remote |
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if test yes = "$bare" |
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then |
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if test yes = "$origin_override" |
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then |
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die '--bare and --origin $origin options are incompatible.' |
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fi |
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no_checkout=yes |
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use_separate_remote= |
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fi |
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if test -z "$origin" |
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then |
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origin=origin |
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fi |
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# Turn the source into an absolute path if |
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# it is local |
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if base=$(get_repo_base "$repo"); then |
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repo="$base" |
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local=yes |
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fi |
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dir="$2" |
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# Try using "humanish" part of source repo if user didn't specify one |
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[ -z "$dir" ] && dir=$(echo "$repo" | sed -e 's|/$||' -e 's|:*/*\.git$||' -e 's|.*[/:]||g') |
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[ -e "$dir" ] && die "destination directory '$dir' already exists." |
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mkdir -p "$dir" && |
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D=$(cd "$dir" && pwd) && |
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trap 'err=$?; cd ..; rm -rf "$D"; exit $err' 0 |
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case "$bare" in |
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yes) |
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GIT_DIR="$D" ;; |
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*) |
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GIT_DIR="$D/.git" ;; |
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esac && export GIT_DIR && git-init ${template+"$template"} || usage |
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if test -n "$reference" |
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then |
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ref_git= |
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if test -d "$reference" |
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then |
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if test -d "$reference/.git/objects" |
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then |
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ref_git="$reference/.git" |
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elif test -d "$reference/objects" |
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then |
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ref_git="$reference" |
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fi |
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fi |
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if test -n "$ref_git" |
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then |
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ref_git=$(cd "$ref_git" && pwd) |
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echo "$ref_git/objects" >"$GIT_DIR/objects/info/alternates" |
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( |
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GIT_DIR="$ref_git" git for-each-ref \ |
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--format='%(objectname) %(*objectname)' |
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) | |
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while read a b |
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do |
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test -z "$a" || |
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git update-ref "refs/reference-tmp/$a" "$a" |
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test -z "$b" || |
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git update-ref "refs/reference-tmp/$b" "$b" |
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done |
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else |
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die "reference repository '$reference' is not a local directory." |
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fi |
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fi |
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rm -f "$GIT_DIR/CLONE_HEAD" |
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# We do local magic only when the user tells us to. |
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case "$local,$use_local" in |
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yes,yes) |
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( cd "$repo/objects" ) || |
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die "-l flag seen but repository '$repo' is not local." |
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case "$local_shared" in |
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no) |
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# See if we can hardlink and drop "l" if not. |
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sample_file=$(cd "$repo" && \ |
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find objects -type f -print | sed -e 1q) |
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# objects directory should not be empty since we are cloning! |
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test -f "$repo/$sample_file" || exit |
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l= |
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if ln "$repo/$sample_file" "$GIT_DIR/objects/sample" 2>/dev/null |
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then |
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l=l |
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fi && |
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rm -f "$GIT_DIR/objects/sample" && |
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cd "$repo" && |
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find objects -depth -print | cpio -pumd$l "$GIT_DIR/" || exit 1 |
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;; |
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yes) |
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mkdir -p "$GIT_DIR/objects/info" |
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echo "$repo/objects" >> "$GIT_DIR/objects/info/alternates" |
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;; |
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esac |
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git-ls-remote "$repo" >"$GIT_DIR/CLONE_HEAD" || exit 1 |
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;; |
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*) |
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case "$repo" in |
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rsync://*) |
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case "$depth" in |
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"") ;; |
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*) die "shallow over rsync not supported" ;; |
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esac |
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rsync $quiet -av --ignore-existing \ |
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--exclude info "$repo/objects/" "$GIT_DIR/objects/" || |
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exit |
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# Look at objects/info/alternates for rsync -- http will |
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# support it natively and git native ones will do it on the |
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# remote end. Not having that file is not a crime. |
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rsync -q "$repo/objects/info/alternates" \ |
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"$GIT_DIR/TMP_ALT" 2>/dev/null || |
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rm -f "$GIT_DIR/TMP_ALT" |
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if test -f "$GIT_DIR/TMP_ALT" |
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then |
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( cd "$D" && |
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. git-parse-remote && |
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resolve_alternates "$repo" <"$GIT_DIR/TMP_ALT" ) | |
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while read alt |
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do |
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case "$alt" in 'bad alternate: '*) die "$alt";; esac |
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case "$quiet" in |
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'') echo >&2 "Getting alternate: $alt" ;; |
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esac |
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rsync $quiet -av --ignore-existing \ |
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--exclude info "$alt" "$GIT_DIR/objects" || exit |
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done |
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rm -f "$GIT_DIR/TMP_ALT" |
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fi |
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git-ls-remote "$repo" >"$GIT_DIR/CLONE_HEAD" || exit 1 |
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;; |
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https://*|http://*|ftp://*) |
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case "$depth" in |
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"") ;; |
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*) die "shallow over http or ftp not supported" ;; |
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esac |
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if test -z "@@NO_CURL@@" |
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then |
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clone_dumb_http "$repo" "$D" |
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else |
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die "http transport not supported, rebuild Git with curl support" |
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fi |
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;; |
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*) |
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case "$upload_pack" in |
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'') git-fetch-pack --all -k $quiet $depth $no_progress "$repo";; |
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*) git-fetch-pack --all -k $quiet "$upload_pack" $depth $no_progress "$repo" ;; |
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esac >"$GIT_DIR/CLONE_HEAD" || |
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die "fetch-pack from '$repo' failed." |
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;; |
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esac |
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;; |
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esac |
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test -d "$GIT_DIR/refs/reference-tmp" && rm -fr "$GIT_DIR/refs/reference-tmp" |
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if test -f "$GIT_DIR/CLONE_HEAD" |
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then |
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# Read git-fetch-pack -k output and store the remote branches. |
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if [ -n "$use_separate_remote" ] |
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then |
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branch_top="remotes/$origin" |
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else |
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branch_top="heads" |
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fi |
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tag_top="tags" |
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while read sha1 name |
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do |
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case "$name" in |
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*'^{}') |
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continue ;; |
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HEAD) |
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destname="REMOTE_HEAD" ;; |
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refs/heads/*) |
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destname="refs/$branch_top/${name#refs/heads/}" ;; |
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refs/tags/*) |
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destname="refs/$tag_top/${name#refs/tags/}" ;; |
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*) |
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continue ;; |
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esac |
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git-update-ref -m "clone: from $repo" "$destname" "$sha1" "" |
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done < "$GIT_DIR/CLONE_HEAD" |
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fi |
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cd "$D" || exit |
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if test -z "$bare" && test -f "$GIT_DIR/REMOTE_HEAD" |
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then |
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# a non-bare repository is always in separate-remote layout |
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remote_top="refs/remotes/$origin" |
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head_sha1=`cat "$GIT_DIR/REMOTE_HEAD"` |
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case "$head_sha1" in |
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'ref: refs/'*) |
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# Uh-oh, the remote told us (http transport done against |
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# new style repository with a symref HEAD). |
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# Ideally we should skip the guesswork but for now |
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# opt for minimum change. |
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head_sha1=`expr "z$head_sha1" : 'zref: refs/heads/\(.*\)'` |
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head_sha1=`cat "$GIT_DIR/$remote_top/$head_sha1"` |
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;; |
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esac |
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# The name under $remote_top the remote HEAD seems to point at. |
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head_points_at=$( |
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( |
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test -f "$GIT_DIR/$remote_top/master" && echo "master" |
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cd "$GIT_DIR/$remote_top" && |
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find . -type f -print | sed -e 's/^\.\///' |
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) | ( |
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done=f |
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while read name |
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do |
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test t = $done && continue |
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branch_tip=`cat "$GIT_DIR/$remote_top/$name"` |
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if test "$head_sha1" = "$branch_tip" |
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then |
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echo "$name" |
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done=t |
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fi |
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done |
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) |
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) |
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# Write out remote.$origin config, and update our "$head_points_at". |
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case "$head_points_at" in |
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?*) |
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# Local default branch |
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git-symbolic-ref HEAD "refs/heads/$head_points_at" && |
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# Tracking branch for the primary branch at the remote. |
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origin_track="$remote_top/$head_points_at" && |
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git-update-ref HEAD "$head_sha1" && |
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# Upstream URL |
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git-config remote."$origin".url "$repo" && |
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# Set up the mappings to track the remote branches. |
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git-config remote."$origin".fetch \ |
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"+refs/heads/*:$remote_top/*" '^$' && |
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rm -f "refs/remotes/$origin/HEAD" |
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git-symbolic-ref "refs/remotes/$origin/HEAD" \ |
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"refs/remotes/$origin/$head_points_at" && |
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git-config branch."$head_points_at".remote "$origin" && |
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git-config branch."$head_points_at".merge "refs/heads/$head_points_at" |
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esac |
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case "$no_checkout" in |
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'') |
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test "z$quiet" = z -a "z$no_progress" = z && v=-v || v= |
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git-read-tree -m -u $v HEAD HEAD |
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esac |
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fi |
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rm -f "$GIT_DIR/CLONE_HEAD" "$GIT_DIR/REMOTE_HEAD" |
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trap - 0 |
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