Add bootstrap command (#42)

yadm

@@ -28,6 +28,7 @@ YADM_REPO="repo.git"
 YADM_CONFIG="config"
 YADM_ENCRYPT="encrypt"
 YADM_ARCHIVE="files.gpg"
+YADM_BOOTSTRAP="bootstrap"
 
 GPG_PROGRAM="gpg"
 GIT_PROGRAM="git"
@@ -48,7 +49,7 @@ function main() {
 
   #; parse command line arguments
   local retval=0
-  internal_commands="^(alt|clean|clone|config|decrypt|encrypt|help|init|list|perms|version)$"
+  internal_commands="^(alt|bootstrap|clean|clone|config|decrypt|encrypt|help|init|list|perms|version)$"
   if [ -z "$*" ] ; then
     #; no argumnts will result in help()
     help
@@ -170,6 +171,15 @@ function alt() {
 
 }
 
+function bootstrap() {
+
+  bootstrap_available || error_out "Cannot execute bootstrap\n'$YADM_BOOTSTRAP' is not an executable program."
+
+  echo "Executing $YADM_BOOTSTRAP"
+  exec "$YADM_BOOTSTRAP"
+
+}
+
 function clean() {
 
   error_out "\"git clean\" has been disabled for safety. You could end up removing all unmanaged files."
@@ -521,6 +531,13 @@ function process_global_args() {
         YADM_OVERRIDE_ARCHIVE="$2"
         shift
       ;;
+      --yadm-bootstrap) #; override the standard YADM_BOOTSTRAP
+        if [[ ! "$2" =~ ^/ ]] ; then
+          error_out "You must specify a fully qualified bootstrap path"
+        fi
+        YADM_OVERRIDE_BOOTSTRAP="$2"
+        shift
+      ;;
       *) #; main arguments are kept intact
         MAIN_ARGS+=("$1")
       ;;
@@ -537,6 +554,7 @@ function configure_paths() {
   YADM_CONFIG="$YADM_DIR/$YADM_CONFIG"
   YADM_ENCRYPT="$YADM_DIR/$YADM_ENCRYPT"
   YADM_ARCHIVE="$YADM_DIR/$YADM_ARCHIVE"
+  YADM_BOOTSTRAP="$YADM_DIR/$YADM_BOOTSTRAP"
 
   #; independent overrides for paths
   if [ -n "$YADM_OVERRIDE_REPO" ]; then
@@ -551,6 +569,9 @@ function configure_paths() {
   if [ -n "$YADM_OVERRIDE_ARCHIVE" ]; then
     YADM_ARCHIVE="$YADM_OVERRIDE_ARCHIVE"
   fi
+  if [ -n "$YADM_OVERRIDE_BOOTSTRAP" ]; then
+    YADM_BOOTSTRAP="$YADM_OVERRIDE_BOOTSTRAP"
+  fi
 
   #; use the yadm repo for all git operations
   GIT_DIR=$(mixed_path "$YADM_REPO")
@@ -661,6 +682,10 @@ function require_ls() {
     LS_PROGRAM=ls
   fi
 }
+function bootstrap_available() {
+  [ -f "$YADM_BOOTSTRAP" ] && [ -x "$YADM_BOOTSTRAP" ] && return
+  return 1
+}
 
 #; ****** Directory tranlations ******