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Diffstat (limited to 'git-submodule.sh')
| -rwxr-xr-x | git-submodule.sh | 717 |
1 files changed, 717 insertions, 0 deletions
diff --git a/git-submodule.sh b/git-submodule.sh new file mode 100755 index 0000000..220d94e --- /dev/null +++ b/git-submodule.sh @@ -0,0 +1,717 @@ +#!/bin/sh +# +# git-submodules.sh: add, init, update or list git submodules +# +# Copyright (c) 2007 Lars Hjemli + +USAGE="[--quiet] [--cached] \ +[add <repo> [-b branch] <path>]|[status|init|update [-i|--init]|summary [-n|--summary-limit <n>] [<commit>]] \ +[--] [<path>...]|[foreach <command>]|[sync [--] [<path>...]]" +OPTIONS_SPEC= +. git-sh-setup +. git-parse-remote +require_work_tree + +command= +branch= +quiet= +cached= + +# +# print stuff on stdout unless -q was specified +# +say() +{ + if test -z "$quiet" + then + echo "$@" + fi +} + +# Resolve relative url by appending to parent's url +resolve_relative_url () +{ + remote=$(get_default_remote) + remoteurl=$(git config "remote.$remote.url") || + die "remote ($remote) does not have a url defined in .git/config" + url="$1" + remoteurl=${remoteurl%/} + while test -n "$url" + do + case "$url" in + ../*) + url="${url#../}" + remoteurl="${remoteurl%/*}" + ;; + ./*) + url="${url#./}" + ;; + *) + break;; + esac + done + echo "$remoteurl/${url%/}" +} + +# +# Get submodule info for registered submodules +# $@ = path to limit submodule list +# +module_list() +{ + git ls-files --stage -- "$@" | grep '^160000 ' +} + +# +# Map submodule path to submodule name +# +# $1 = path +# +module_name() +{ + # Do we have "submodule.<something>.path = $1" defined in .gitmodules file? + re=$(printf '%s\n' "$1" | sed -e 's/[].[^$\\*]/\\&/g') + name=$( git config -f .gitmodules --get-regexp '^submodule\..*\.path$' | + sed -n -e 's|^submodule\.\(.*\)\.path '"$re"'$|\1|p' ) + test -z "$name" && + die "No submodule mapping found in .gitmodules for path '$path'" + echo "$name" +} + +# +# Clone a submodule +# +# Prior to calling, cmd_update checks that a possibly existing +# path is not a git repository. +# Likewise, cmd_add checks that path does not exist at all, +# since it is the location of a new submodule. +# +module_clone() +{ + path=$1 + url=$2 + + # If there already is a directory at the submodule path, + # expect it to be empty (since that is the default checkout + # action) and try to remove it. + # Note: if $path is a symlink to a directory the test will + # succeed but the rmdir will fail. We might want to fix this. + if test -d "$path" + then + rmdir "$path" 2>/dev/null || + die "Directory '$path' exist, but is neither empty nor a git repository" + fi + + test -e "$path" && + die "A file already exist at path '$path'" + + git-clone -n "$url" "$path" || + die "Clone of '$url' into submodule path '$path' failed" +} + +# +# Add a new submodule to the working tree, .gitmodules and the index +# +# $@ = repo path +# +# optional branch is stored in global branch variable +# +cmd_add() +{ + # parse $args after "submodule ... add". + while test $# -ne 0 + do + case "$1" in + -b | --branch) + case "$2" in '') usage ;; esac + branch=$2 + shift + ;; + -q|--quiet) + quiet=1 + ;; + --) + shift + break + ;; + -*) + usage + ;; + *) + break + ;; + esac + shift + done + + repo=$1 + path=$2 + + if test -z "$repo" -o -z "$path"; then + usage + fi + + # assure repo is absolute or relative to parent + case "$repo" in + ./*|../*) + # dereference source url relative to parent's url + realrepo=$(resolve_relative_url "$repo") || exit + ;; + *:*|/*) + # absolute url + realrepo=$repo + ;; + *) + die "repo URL: '$repo' must be absolute or begin with ./|../" + ;; + esac + + # strip trailing slashes from path + path=$(echo "$path" | sed -e 's|/*$||') + + git ls-files --error-unmatch "$path" > /dev/null 2>&1 && + die "'$path' already exists in the index" + + # perhaps the path exists and is already a git repo, else clone it + if test -e "$path" + then + if test -d "$path"/.git -o -f "$path"/.git + then + echo "Adding existing repo at '$path' to the index" + else + die "'$path' already exists and is not a valid git repo" + fi + + case "$repo" in + ./*|../*) + url=$(resolve_relative_url "$repo") || exit + ;; + *) + url="$repo" + ;; + esac + git config submodule."$path".url "$url" + else + + module_clone "$path" "$realrepo" || exit + (unset GIT_DIR; cd "$path" && git checkout -f -q ${branch:+-b "$branch" "origin/$branch"}) || + die "Unable to checkout submodule '$path'" + fi + + git add "$path" || + die "Failed to add submodule '$path'" + + git config -f .gitmodules submodule."$path".path "$path" && + git config -f .gitmodules submodule."$path".url "$repo" && + git add .gitmodules || + die "Failed to register submodule '$path'" +} + +# +# Execute an arbitrary command sequence in each checked out +# submodule +# +# $@ = command to execute +# +cmd_foreach() +{ + module_list | + while read mode sha1 stage path + do + if test -e "$path"/.git + then + say "Entering '$path'" + (cd "$path" && eval "$@") || + die "Stopping at '$path'; script returned non-zero status." + fi + done +} + +# +# Register submodules in .git/config +# +# $@ = requested paths (default to all) +# +cmd_init() +{ + # parse $args after "submodule ... init". + while test $# -ne 0 + do + case "$1" in + -q|--quiet) + quiet=1 + ;; + --) + shift + break + ;; + -*) + usage + ;; + *) + break + ;; + esac + shift + done + + module_list "$@" | + while read mode sha1 stage path + do + # Skip already registered paths + name=$(module_name "$path") || exit + url=$(git config submodule."$name".url) + test -z "$url" || continue + + url=$(git config -f .gitmodules submodule."$name".url) + test -z "$url" && + die "No url found for submodule path '$path' in .gitmodules" + + # Possibly a url relative to parent + case "$url" in + ./*|../*) + url=$(resolve_relative_url "$url") || exit + ;; + esac + + git config submodule."$name".url "$url" || + die "Failed to register url for submodule path '$path'" + + say "Submodule '$name' ($url) registered for path '$path'" + done +} + +# +# Update each submodule path to correct revision, using clone and checkout as needed +# +# $@ = requested paths (default to all) +# +cmd_update() +{ + # parse $args after "submodule ... update". + while test $# -ne 0 + do + case "$1" in + -q|--quiet) + shift + quiet=1 + ;; + -i|--init) + shift + cmd_init "$@" || return + ;; + --) + shift + break + ;; + -*) + usage + ;; + *) + break + ;; + esac + done + + module_list "$@" | + while read mode sha1 stage path + do + name=$(module_name "$path") || exit + url=$(git config submodule."$name".url) + if test -z "$url" + then + # Only mention uninitialized submodules when its + # path have been specified + test "$#" != "0" && + say "Submodule path '$path' not initialized" && + say "Maybe you want to use 'update --init'?" + continue + fi + + if ! test -d "$path"/.git -o -f "$path"/.git + then + module_clone "$path" "$url" || exit + subsha1= + else + subsha1=$(unset GIT_DIR; cd "$path" && + git rev-parse --verify HEAD) || + die "Unable to find current revision in submodule path '$path'" + fi + + if test "$subsha1" != "$sha1" + then + force= + if test -z "$subsha1" + then + force="-f" + fi + (unset GIT_DIR; cd "$path" && git-fetch && + git-checkout $force -q "$sha1") || + die "Unable to checkout '$sha1' in submodule path '$path'" + + say "Submodule path '$path': checked out '$sha1'" + fi + done +} + +set_name_rev () { + revname=$( ( + unset GIT_DIR + cd "$1" && { + git describe "$2" 2>/dev/null || + git describe --tags "$2" 2>/dev/null || + git describe --contains "$2" 2>/dev/null || + git describe --all --always "$2" + } + ) ) + test -z "$revname" || revname=" ($revname)" +} +# +# Show commit summary for submodules in index or working tree +# +# If '--cached' is given, show summary between index and given commit, +# or between working tree and given commit +# +# $@ = [commit (default 'HEAD'),] requested paths (default all) +# +cmd_summary() { + summary_limit=-1 + for_status= + + # parse $args after "submodule ... summary". + while test $# -ne 0 + do + case "$1" in + --cached) + cached="$1" + ;; + --for-status) + for_status="$1" + ;; + -n|--summary-limit) + if summary_limit=$(($2 + 0)) 2>/dev/null && test "$summary_limit" = "$2" + then + : + else + usage + fi + shift + ;; + --) + shift + break + ;; + -*) + usage + ;; + *) + break + ;; + esac + shift + done + + test $summary_limit = 0 && return + + if rev=$(git rev-parse --verify "$1^0" 2>/dev/null) + then + head=$rev + shift + else + head=HEAD + fi + + cd_to_toplevel + # Get modified modules cared by user + modules=$(git diff-index $cached --raw $head -- "$@" | + egrep '^:([0-7]* )?160000' | + while read mod_src mod_dst sha1_src sha1_dst status name + do + # Always show modules deleted or type-changed (blob<->module) + test $status = D -o $status = T && echo "$name" && continue + # Also show added or modified modules which are checked out + GIT_DIR="$name/.git" git-rev-parse --git-dir >/dev/null 2>&1 && + echo "$name" + done + ) + + test -z "$modules" && return + + git diff-index $cached --raw $head -- $modules | + egrep '^:([0-7]* )?160000' | + cut -c2- | + while read mod_src mod_dst sha1_src sha1_dst status name + do + if test -z "$cached" && + test $sha1_dst = 0000000000000000000000000000000000000000 + then + case "$mod_dst" in + 160000) + sha1_dst=$(GIT_DIR="$name/.git" git rev-parse HEAD) + ;; + 100644 | 100755 | 120000) + sha1_dst=$(git hash-object $name) + ;; + 000000) + ;; # removed + *) + # unexpected type + echo >&2 "unexpected mode $mod_dst" + continue ;; + esac + fi + missing_src= + missing_dst= + + test $mod_src = 160000 && + ! GIT_DIR="$name/.git" git-rev-parse --verify $sha1_src^0 >/dev/null 2>&1 && + missing_src=t + + test $mod_dst = 160000 && + ! GIT_DIR="$name/.git" git-rev-parse --verify $sha1_dst^0 >/dev/null 2>&1 && + missing_dst=t + + total_commits= + case "$missing_src,$missing_dst" in + t,) + errmsg=" Warn: $name doesn't contain commit $sha1_src" + ;; + ,t) + errmsg=" Warn: $name doesn't contain commit $sha1_dst" + ;; + t,t) + errmsg=" Warn: $name doesn't contain commits $sha1_src and $sha1_dst" + ;; + *) + errmsg= + total_commits=$( + if test $mod_src = 160000 -a $mod_dst = 160000 + then + range="$sha1_src...$sha1_dst" + elif test $mod_src = 160000 + then + range=$sha1_src + else + range=$sha1_dst + fi + GIT_DIR="$name/.git" \ + git log --pretty=oneline --first-parent $range | wc -l + ) + total_commits=" ($(($total_commits + 0)))" + ;; + esac + + sha1_abbr_src=$(echo $sha1_src | cut -c1-7) + sha1_abbr_dst=$(echo $sha1_dst | cut -c1-7) + if test $status = T + then + if test $mod_dst = 160000 + then + echo "* $name $sha1_abbr_src(blob)->$sha1_abbr_dst(submodule)$total_commits:" + else + echo "* $name $sha1_abbr_src(submodule)->$sha1_abbr_dst(blob)$total_commits:" + fi + else + echo "* $name $sha1_abbr_src...$sha1_abbr_dst$total_commits:" + fi + if test -n "$errmsg" + then + # Don't give error msg for modification whose dst is not submodule + # i.e. deleted or changed to blob + test $mod_dst = 160000 && echo "$errmsg" + else + if test $mod_src = 160000 -a $mod_dst = 160000 + then + limit= + test $summary_limit -gt 0 && limit="-$summary_limit" + GIT_DIR="$name/.git" \ + git log $limit --pretty='format: %m %s' \ + --first-parent $sha1_src...$sha1_dst + elif test $mod_dst = 160000 + then + GIT_DIR="$name/.git" \ + git log --pretty='format: > %s' -1 $sha1_dst + else + GIT_DIR="$name/.git" \ + git log --pretty='format: < %s' -1 $sha1_src + fi + echo + fi + echo + done | + if test -n "$for_status"; then + echo "# Modified submodules:" + echo "#" + sed -e 's|^|# |' -e 's|^# $|#|' + else + cat + fi +} +# +# List all submodules, prefixed with: +# - submodule not initialized +# + different revision checked out +# +# If --cached was specified the revision in the index will be printed +# instead of the currently checked out revision. +# +# $@ = requested paths (default to all) +# +cmd_status() +{ + # parse $args after "submodule ... status". + while test $# -ne 0 + do + case "$1" in + -q|--quiet) + quiet=1 + ;; + --cached) + cached=1 + ;; + --) + shift + break + ;; + -*) + usage + ;; + *) + break + ;; + esac + shift + done + + module_list "$@" | + while read mode sha1 stage path + do + name=$(module_name "$path") || exit + url=$(git config submodule."$name".url) + if test -z "$url" || ! test -d "$path"/.git -o -f "$path"/.git + then + say "-$sha1 $path" + continue; + fi + set_name_rev "$path" "$sha1" + if git diff-files --quiet -- "$path" + then + say " $sha1 $path$revname" + else + if test -z "$cached" + then + sha1=$(unset GIT_DIR; cd "$path" && git rev-parse --verify HEAD) + set_name_rev "$path" "$sha1" + fi + say "+$sha1 $path$revname" + fi + done +} +# +# Sync remote urls for submodules +# This makes the value for remote.$remote.url match the value +# specified in .gitmodules. +# +cmd_sync() +{ + while test $# -ne 0 + do + case "$1" in + -q|--quiet) + quiet=1 + shift + ;; + --) + shift + break + ;; + -*) + usage + ;; + *) + break + ;; + esac + done + cd_to_toplevel + module_list "$@" | + while read mode sha1 stage path + do + name=$(module_name "$path") + url=$(git config -f .gitmodules --get submodule."$name".url) + + # Possibly a url relative to parent + case "$url" in + ./*|../*) + url=$(resolve_relative_url "$url") || exit + ;; + esac + + if test -e "$path"/.git + then + ( + unset GIT_DIR + cd "$path" + remote=$(get_default_remote) + say "Synchronizing submodule url for '$name'" + git config remote."$remote".url "$url" + ) + fi + done +} + +# This loop parses the command line arguments to find the +# subcommand name to dispatch. Parsing of the subcommand specific +# options are primarily done by the subcommand implementations. +# Subcommand specific options such as --branch and --cached are +# parsed here as well, for backward compatibility. + +while test $# != 0 && test -z "$command" +do + case "$1" in + add | foreach | init | update | status | summary | sync) + command=$1 + ;; + -q|--quiet) + quiet=1 + ;; + -b|--branch) + case "$2" in + '') + usage + ;; + esac + branch="$2"; shift + ;; + --cached) + cached="$1" + ;; + --) + break + ;; + -*) + usage + ;; + *) + break + ;; + esac + shift +done + +# No command word defaults to "status" +test -n "$command" || command=status + +# "-b branch" is accepted only by "add" +if test -n "$branch" && test "$command" != add +then + usage +fi + +# "--cached" is accepted only by "status" and "summary" +if test -n "$cached" && test "$command" != status -a "$command" != summary +then + usage +fi + +"cmd_$command" "$@" |