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303 lines
8.0 KiB
303 lines
8.0 KiB
#!/bin/sh
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#
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# git-vendor.sh: manage vendored repos via git-subtree
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#
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# Copyright (c) 2016 Brett Langdon <me@brett.is>
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#
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_usage()
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{
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cat <<EOF
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Usage:
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git vendor --help
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git vendor add [--prefix <dir>] <name> <repository> [<ref>]
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git vendor list [<name>]
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git vendor remove <name>
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git vendor update <name> [<ref>]
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git vendor upstream <name> [<ref>] [--repo <repository>]
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EOF
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}
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case "$1" in
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""|"-h"|"--help") _usage && exit ;;
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esac
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PATH=$PATH:$(git --exec-path)
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. git-sh-setup
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require_work_tree
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command="$1"
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shift
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case "$command" in
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"add"|"list"|"remove"|"update"|"upstream") ;;
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*) >&2 echo "error: unknown command \"$command\"" && _usage && exit 1 ;;
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esac
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prefix="vendor"
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if [ "$1" = "--prefix" ]; then
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prefix="$2"
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shift; shift
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fi
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# Simulate an associative array (for older versions of bash)
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var_name()
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{
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printf "name_$1" | tr -c '[A-Za-z0-9]' '_'
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}
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vendor_names_from_log()
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{
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name=
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dir=
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git log --grep="^git-vendor-name: .*\$" \
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--pretty=format:'START %H%n%s%n%n%b%nEND%n' HEAD |
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while read a b junk; do
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case "$a" in
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START) ;;
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git-vendor-name:) name="$b" ;;
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git-vendor-dir:) dir="$b" ;;
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END)
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# Only consider dependencies which still exist on disk
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# and haven't been renamed
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eval `printf val='$'$(var_name "$dir")`
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if [ -d "$dir" -a -z "$val" ]; then
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echo "$name"
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eval `printf $(var_name "$dir")=1`
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fi
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name=
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dir=
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;;
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esac
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done | sort -u
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}
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vendor_git_log_from_name()
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{
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name="$1"
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git log -1 --grep="^git-vendor-name: $name\$" --pretty=format:'START %H%n%s%n%n%b%nEND%n' HEAD
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}
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vendor_name_from_dir()
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{
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name=
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dir="$1"
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git log -1 --grep="^git-vendor-dir: $dir\$" --pretty=format:'START %H%n%s%n%n%b%nEND%n' HEAD |
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while read a b junk; do
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case "$a" in
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git-vendor-name:) name="$b" ;;
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END)
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if [ -n "$name" ]; then
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echo "$name"
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fi
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name=
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;;
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esac
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done
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}
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cmd_add()
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{
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require_clean_work_tree
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name="$1"
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repository="$2"
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ref="master"
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if [ "$3" != "" ]; then
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ref="$3"
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fi
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if [ $# -lt 2 ];
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then
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die "Incorrect options provided: git vendor add <name> <repository> [<ref>]"
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fi
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dir="$prefix/$(echo "$repository" | sed -E 's/^[a-zA-Z]+((:\/\/)|@)//' | sed 's/:/\//' | sed -E 's/\.git$//')"
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message="\
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Add \"$name\" from \"$repository@$ref\"
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git-vendor-name: $name
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git-vendor-dir: $dir
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git-vendor-repository: $repository
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git-vendor-ref: $ref
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"
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set -x
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git subtree add --prefix "$dir" --message "$message" "$repository" "$ref" --squash
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}
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cmd_list()
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{
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showOnly="$1"
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for name in $(vendor_names_from_log);
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do
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vendor_git_log_from_name "$name" |
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while read a b junk; do
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case "$a" in
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START) commit="$b" ;;
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git-vendor-name:) name="$b" ;;
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git-vendor-dir:) dir="$b" ;;
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git-vendor-ref:) ref="$b" ;;
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git-vendor-repository:) repository="$b" ;;
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END)
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if [ ! -z "$repository" ];
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then
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if [ -z "$showOnly" -o "$showOnly" = "$name" ]; then
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printf "$name@$ref:\n"
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printf "\tname:\t$name\n"
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printf "\tdir:\t$dir\n"
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printf "\trepo:\t$repository\n"
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printf "\tref:\t$ref\n"
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printf "\tcommit:\t$commit\n"
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printf "\n"
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fi
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fi
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name=
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dir=
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ref=
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commit=
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repository=
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;;
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esac
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done
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done;
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}
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cmd_update()
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{
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require_clean_work_tree
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name="$1"
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ref="master"
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if [ "$2" != "" ]; then
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ref="$2"
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fi
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if [ $# -lt 1 ]; then
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die "Incorrect options provided: git vendor update <name> [<ref>]"
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fi
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vendor_git_log_from_name "$name" |
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while read a b junk; do
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case "$a" in
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START) ;;
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git-vendor-dir:) dir="$b" ;;
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git-vendor-repository:) repository="$b" ;;
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git-vendor-ref:) curr_ref="$b" ;;
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END)
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# Make sure the dependency exists on disk
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if [ ! -d "$dir" ]; then
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die "Dependency \"$1\" is missing from \"$dir\""
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fi
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# And hasn't been renamed
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logname=$(vendor_name_from_dir "$dir")
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if [ "$name" != "$logname" ]; then
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die "Dependency \"$1\" was renamed \"$logname\""
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fi
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if [ ! -z "$repository" ];
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then
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message="\
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Update \"$name\" from \"$repository@$ref\"
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git-vendor-name: $name
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git-vendor-dir: $dir
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git-vendor-repository: $repository
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git-vendor-ref: $ref
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"
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git fetch "$repository" "$curr_ref"
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git subtree pull --prefix "$dir" --message "$message" "$repository" "$ref" --squash
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break
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fi
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;;
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esac
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done
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}
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cmd_upstream()
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{
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require_clean_work_tree
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while [ $# -gt 0 ] ; do
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case $1 in
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--repo)
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repository_arg="$2"
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shift # argument value
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;;
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*)
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if [ -z "$name" ]; then
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name="$1"
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elif [ -z "$ref" ]; then
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ref="$1"
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fi
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;;
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esac
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shift # current argument
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done
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if [ -z "$name" ]; then
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die "Incorrect options provided: git vendor upstream <name> [<ref>] [--repo <repository>]"
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fi
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if [ -z "$ref" ]; then
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ref="master"
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fi
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vendor_git_log_from_name "$name" |
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while read a b junk; do
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case "$a" in
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START) ;;
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git-vendor-dir:) dir="$b" ;;
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git-vendor-repository:) repository="$b" ;;
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END)
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# Make sure the dependency exists on disk
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if [ ! -d "$dir" ]; then
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die "Dependency \"$1\" is missing from \"$dir\""
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fi
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# And hasn't been renamed
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logname=$(vendor_name_from_dir "$dir")
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if [ "$name" != "$logname" ]; then
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die "Dependency \"$1\" was renamed \"$logname\""
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fi
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if [ ! -z "$repository_arg" ];
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then
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# override the repository read from the commit logs
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# with the one read from the command line arguments
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repository="$repository_arg"
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fi
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if [ ! -z "$repository" ];
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then
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git subtree push --prefix "$dir" "$repository" "$ref"
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break
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fi
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;;
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esac
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done
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}
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cmd_remove()
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{
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require_clean_work_tree
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name="$1"
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if [ $# -lt 1 ]; then
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die "Incorrect options provided: git vendor remove <name>"
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fi
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vendor_git_log_from_name "$name" |
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while read a b junk; do
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case "$a" in
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START) ;;
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git-vendor-dir:) dir="$b" ;;
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END)
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# Make sure the dependency exists
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if [ ! -d "$dir" ]; then
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die "Dependency \"$1\" is missing from \"$dir\""
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fi
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# And hasn't been renamed
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logname=$(vendor_name_from_dir "$dir")
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if [ "$name" != "$logname" ]; then
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die "Dependency \"$1\" was renamed \"$logname\""
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fi
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git rm -rf "$dir"
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git commit --message "Removing \"$name\" from \"$dir\""
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break
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;;
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esac
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done
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}
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# Run the command
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"cmd_$command" "$@"
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