Pre-up, post-up, pre-down, and post-down hooks

These are programs that, if they exist, will run before or after the
syncronization/removal is run. Three use cases caused this:

1. The thoughtbot dotfiles will run a vundle installation set of
commands after intitial synchronization.

2. I changed the location of `.bash_history` to `.bash/history` and
wanted to move `.bash_history` to `.bash/history` after up to preserve
existing history.

3. Moving from an existing old-style custom install script to `rcup`
might require some cleanup; this happened in practice, and required a
simple script.

1 files changed, 15 insertions, 0 deletions

diff --git a/share/rcm.sh.in b/share/rcm.sh.in
index ea35e47..36b6762 100644
--- a/share/rcm.sh.in
+++ b/share/rcm.sh.in
@@ -99,3 +99,18 @@ handle_metadata_flags() {
   $DEBUG "TAGS: $TAGS"
   $DEBUG "DOTFILES_DIRS: $DOTFILES_DIRS"
 }
+
+run_hooks() {
+  $DEBUG "run_hooks $1 $2"
+  $DEBUG "  with DOTFILES_DIRS: $DOTFILES_DIRS"
+  local when=$1
+  local direction=$2
+
+  for dotfiles_dir in $DOTFILES_DIRS; do
+    $DEBUG "hook: $dotfiles_dir/hooks/$when-$direction"
+    if [ -x "$dotfiles_dir/hooks/$when-$direction" ]; then
+      $VERBOSE "running $when-$direction hooks for $dotfiles_dir"
+      $dotfiles_dir/hooks/$when-$direction
+    fi
+  done
+}