From bf0a040f8fb58f6b84b736c07a1665267931c2ce Mon Sep 17 00:00:00 2001
From: Chris Koeritz <fred@gruntose.com>
Date: Fri, 25 May 2018 21:30:51 -0400
Subject: [PATCH] uses knowledge of current dir to pick app dir

when the user is not explicit, we use a heuristic to get the application directory for a site avenger project.  if the current directory has an avenger5 directory someplace above it, then we can decide that's the implied directory to operate on.  and we do.
---
 scripts/site_avenger/shared_site_mgr.sh | 78 ++++++++++++++++++++-----
 1 file changed, 62 insertions(+), 16 deletions(-)

diff --git a/scripts/site_avenger/shared_site_mgr.sh b/scripts/site_avenger/shared_site_mgr.sh
index 015d3e68..f5d5e15e 100644
--- a/scripts/site_avenger/shared_site_mgr.sh
+++ b/scripts/site_avenger/shared_site_mgr.sh
@@ -40,6 +40,43 @@ function check_apps_root()
   fi
 }
 
+#hmmm: extract to core somewhere...
+# locates a parent directory of a certain name, if possible.  returns success
+# (as zero) if the directory was found, and failure if there was no parent
+# named as requested.  sets a global variable PARENT_DIR_FOUND to the full
+# directory name that matched, including the name being sought (but omitting
+# any deeper directories than that).
+function find_named_parent_dir()
+{
+  local dir_name_sought="$1"; shift
+  # clear any previous global result.
+  unset PARENT_DIR_FOUND
+  # check for degenerate case of parameter count.
+  if [ -z "$dir_name_sought" ]; then
+    echo "
+find_named_parent_dir: requires a directory name parameter, which will be
+sought out above the current directory.  the return value indicates whether
+the requested name was found or not.
+"
+    return 1
+  fi
+  # loop upwards in dir hierarchy to find the name.
+  while true; do
+    local currdir="$(\pwd)"
+    if [ "$currdir" == "/" ]; then
+      # we climbed out of all subdirs.  this is a failure case.
+      return 1
+    fi
+    # get the base part of our name to check on success.
+    local base="$(basename "$currdir")"
+    if [ "$base" == "$dir_name_sought" ]; then
+      # yes, that is the right name.  success case.  save our result.
+      export PARENT_DIR_FOUND="$currdir"
+      return 0
+    fi
+  done
+}
+
 # tries to find an appropriate config file for the application.
 function locate_config_file()
 {
@@ -96,23 +133,32 @@ function find_app_folder()
     app_dirname="$(basename $(find "$appsdir" -mindepth 1 -maxdepth 1 -type d) )"
     exit_on_error "Guessing application folder"
   else
-    # if more than one folder, force user to choose.
-    # Reference: https://askubuntu.com/questions/1705/how-can-i-create-a-select-menu-in-a-shell-script
-    holdps3="$PS3"
-    PS3='Please pick a folder for site initialization: '
-    options=( $(find "$appsdir" -mindepth 1 -maxdepth 1 -type d -exec basename {} ';') "Quit")
-    select app_dirname in "${options[@]}"; do
-      case $app_dirname in
-        "Quit") echo ; echo "Quitting from the script."; return 1; ;;
-        *) echo ; echo "You picked folder '$app_dirname'" ; break; ;;
-      esac
-    done
-    if [ -z "$app_dirname" ]; then
-      echo "The folder was not provided.  This script needs a directory name"
-      echo "within which to initialize the site."
-      return 1
+    # there's more than one folder in apps...
+
+    # if we can find an avenger5 directory above our current PWD, then that might tell us our name.
+    if find_named_parent_dir "avenger5"; then
+      # we can grab a name above the avenger5 location.  let's try that.
+      app_dirname="$(basename "$(dirname $PARENT_DIR_FOUND)" )"
+    else
+      # well, we couldn't guess a directory based on our current location,
+      # so ask the user to choose.
+      # Reference: https://askubuntu.com/questions/1705/how-can-i-create-a-select-menu-in-a-shell-script
+      holdps3="$PS3"
+      PS3='Please pick a folder for site initialization: '
+      options=( $(find "$appsdir" -mindepth 1 -maxdepth 1 -type d -exec basename {} ';') "Quit")
+      select app_dirname in "${options[@]}"; do
+        case $app_dirname in
+          "Quit") echo ; echo "Quitting from the script."; return 1; ;;
+          *) echo ; echo "You picked folder '$app_dirname'" ; break; ;;
+        esac
+      done
+      if [ -z "$app_dirname" ]; then
+        echo "The folder was not provided.  This script needs a directory name"
+        echo "within which to initialize the site."
+        return 1
+      fi
+      PS3="$holdps3"
     fi
-    PS3="$holdps3"
   fi
   test_app_folder "$appsdir" "$app_dirname"
   exit_on_error "Testing application folder: $app_dirname"
-- 
2.34.1