From a93f6fd96d2be0b9370b32566964256f8f018cec Mon Sep 17 00:00:00 2001
From: Chris Koeritz <fred@gruntose.com>
Date: Fri, 25 May 2018 16:30:47 -0400
Subject: [PATCH] new scripts for acting on hierarchies

act_on_tree runs an action on every folder that is one level down from a directory, where the default is to use the current directory.  so like "act_on_tree git pull" would update all the git repositories under the current dir.  there is a flag for changing the default location to act on.
act_on_apps is a site-avenger specialized version of act_on_tree that runs the command on directories under ~/apps which also happen to be site avenger projects (i.e. they have an avenger5 subdirectory just under the project directory).
---
 scripts/files/act_on_tree.sh        | 95 +++++++++++++++++++++++++++++
 scripts/site_avenger/act_on_apps.sh | 12 ++++
 2 files changed, 107 insertions(+)
 create mode 100644 scripts/files/act_on_tree.sh
 create mode 100644 scripts/site_avenger/act_on_apps.sh

diff --git a/scripts/files/act_on_tree.sh b/scripts/files/act_on_tree.sh
new file mode 100644
index 00000000..86cf685d
--- /dev/null
+++ b/scripts/files/act_on_tree.sh
@@ -0,0 +1,95 @@
+#!/bin/bash
+
+# act_on_tree: performs a command on a hierarchy of directories.
+#
+# a handy way to run a command across a set of folders.
+
+source "$FEISTY_MEOW_SCRIPTS/core/launch_feisty_meow.sh"
+
+#echo command line in act_on_tree is: $*
+
+if [ -z "$APP_NAME" ]; then
+  APP_NAME="$(basename $0 .sh)"
+fi
+
+function print_instructions_and_exit()
+{
+  echo "
+$APP_NAME [-d directory] [-f subfolder] action1 [action2...]
+
+This script runs an action command on each of the folders that live under the
+current directory (going one level down from this directory, not recursively).
+The single action command to run is built from the pieces action1, action2,
+and so on that are provided on the command line.
+
+For example, this command:
+  $APP_NAME git branch
+will show the branch information on each project under the current directory.
+
+You can specify an alternate directory to use with the '-d' flag, e.g.:
+  $APP_NAME -d ~/turnip_codes/ ant clean build
+
+You can provide a sub-folder name with -f that must exist and which the script
+changes the directory to before the command is run.  This supports hierarchies
+where the action must take place below the children of the -d directory.
+  $APP_NAME -f avenger5 rgetem
+
+The flags and their parameters must precede the action1... arguments.
+
+"
+  exit 1
+}
+
+changes=true
+
+while [ $changes == true ]; do
+  changes=nope
+
+  # check if they gave us a special directory flag.
+  if [ "$1" == "-d" ]; then
+    shift  # toss the -d.
+    # grab the directory they want to actually use.
+    seekdir="$1"; shift
+    # check for more flags.
+    changes=true
+  fi
+
+  # check if they gave us a subfolder name flag.
+  if [ "$1" == "-f" ]; then
+    shift  # toss the -f.
+    # get their preferred subfolder.
+    subfoldername="$1"; shift
+    # check for more flags.
+    changes=true
+  fi
+done
+
+# check that there are some remaining parms for the action pieces.
+if [ -z "$*" ]; then
+  print_instructions_and_exit
+fi
+
+# plug in our defaults.
+if [ -z "$seekdir" ]; then
+  seekdir="."
+fi
+if [ -z "$subfoldername" ]; then
+  subfoldername="."
+fi
+
+sep 28
+
+pushd $seekdir &>/dev/null
+
+for i in *; do
+  if [ -d "$i" -a -d "$i/$subfoldername" ]; then
+    pushd "$i/$subfoldername" &>/dev/null
+    echo "[in '$i' running action: $*]"
+    $* 
+    sep 28
+    popd &>/dev/null
+  fi
+done
+
+popd &>/dev/null
+
diff --git a/scripts/site_avenger/act_on_apps.sh b/scripts/site_avenger/act_on_apps.sh
new file mode 100644
index 00000000..32cb32ec
--- /dev/null
+++ b/scripts/site_avenger/act_on_apps.sh
@@ -0,0 +1,12 @@
+#!/bin/bash
+
+# run a command on all of the existing apps folders, but only if they appear to have site avenger projects in them.
+
+source "$FEISTY_MEOW_SCRIPTS/core/launch_feisty_meow.sh"
+
+# fix the app name for our call to the act_on_tree script.
+export APP_NAME="$(basename $0 .sh)"
+
+act_on_tree -f avenger5 -d ~/apps "${@}"
+
+
-- 
2.34.1