Chris@1563: #!/bin/bash
Chris@1563: #
Chris@1563: # Convert an Hg repo with subrepos into a new repo in which the
Chris@1563: # subrepo contents are included in the main repo. The history of the
Chris@1563: # original and its subrepos is retained.
Chris@1563: #
Chris@1563: # Note that this script invokes itself, in order to handle nested
Chris@1563: # subrepos.
Chris@1563: #
Chris@1563: # While this does work, I'm not convinced it's entirely a good
Chris@1563: # idea. The history ends up a bit of a mess, and if it's a preliminary
Chris@1563: # to converting to git (which is one obvious reason to do this), the
Chris@1563: # history ends up even messier after that conversion.
Chris@1563: 
Chris@1563: set -ex
Chris@1563: 
Chris@1563: repo="$1"
Chris@1563: target="$2"
Chris@1563: target_subdir="$3"
Chris@1563: revision="$4"
Chris@1563: 
Chris@1563: if [ -z "$repo" ] || [ -z "$target" ]; then
Chris@1563:     echo "usage: $0 <repo-url> <target-dir> [<target-subdir> <revision>]"
Chris@1563:     exit 2
Chris@1563: fi
Chris@1563: 
Chris@1563: set -u
Chris@1563: 
Chris@1563: myname="$0"
Chris@1563: mydir=$(dirname "$myname")
Chris@1563: 
Chris@1563: reponame=$(basename "$repo")
Chris@1563: tmpdir="/tmp/flatten_$$"
Chris@1563: mkdir -p "$tmpdir"
Chris@1563: trap "rm -rf ${tmpdir}" 0
Chris@1563: 
Chris@1563: filemap="$tmpdir/filemap"
Chris@1563: tmprepo="$tmpdir/tmprepo"
Chris@1563: subtmp="$tmpdir/subtmp"
Chris@1563: 
Chris@1563: if [ -n "$revision" ]; then
Chris@1563:     hg clone -r "$revision" "$repo" "$tmprepo"
Chris@1563: else
Chris@1563:     hg clone "$repo" "$tmprepo"
Chris@1563: fi
Chris@1563: 
Chris@1563: read_sub() {
Chris@1563:     if [ -f "$tmprepo/.hgsub" ]; then
Chris@1563: 	cat "$tmprepo/.hgsub" | sed 's/ *= */,/'
Chris@1563:     fi
Chris@1563: }
Chris@1563: 
Chris@1563: (   echo "exclude .hgsub"
Chris@1563:     echo "exclude .hgsubstate"
Chris@1563:     read_sub | while IFS=, read dir uri; do
Chris@1563: 	echo "exclude $dir"
Chris@1563:     done
Chris@1563:     if [ -n "$target_subdir" ]; then
Chris@1563: 	echo "rename . $target_subdir"
Chris@1563:     fi
Chris@1563: ) > "$filemap"
Chris@1563: 
Chris@1563: hg convert --filemap "$filemap" "$tmprepo" "$target"
Chris@1563: (   cd "$target"
Chris@1563:     hg update
Chris@1563: )
Chris@1563: 
Chris@1563: read_sub | while IFS=, read dir uri; do
Chris@1563:     rm -rf "$subtmp"
Chris@1563:     revision=$(grep ' '"$dir"'$' "$tmprepo/.hgsubstate" | awk '{ print $1; }')
Chris@1563:     if [ -n "$target_subdir" ]; then
Chris@1563: 	"$myname" "$tmprepo/$dir" "$subtmp" "$target_subdir/$dir" "$revision"
Chris@1563:     else
Chris@1563: 	"$myname" "$tmprepo/$dir" "$subtmp" "$dir" "$revision"
Chris@1563:     fi
Chris@1563:     (   cd "$target"
Chris@1563: 	hg pull -f "$subtmp" &&
Chris@1563: 	    hg merge --tool internal:local &&
Chris@1563: 	    hg commit -m "Merge former subrepo $dir"
Chris@1563:     )
Chris@1563: done
Chris@1563: