Add version_of .info reader + test

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/sbo-batch-test b/sbo-batch-test
index c5e6cf1..01280a3 100755
--- a/sbo-batch-test
+++ b/sbo-batch-test
@@ -397,6 +397,17 @@ read_requires() {
   ( set +u; source "$info"; echo "${REQUIRES:-}" )
 }
 
+# Echo the VERSION field from a SlackBuild dir's .info (empty if unreadable).
+# Used as the cache key's version component.
+version_of() {
+  local dir="$1"
+  local info="$dir/$(basename "$dir").info"
+  [[ -f "$info" ]] || return
+  # .info lines look like: VERSION="1.2.3"
+  local v; v="$(grep -m1 '^VERSION=' "$info" | cut -d'"' -f2)"
+  echo "$v"
+}
+
 # =============================================================================
 # DEPENDENCY RESOLUTION
 # Builds a topological order over the local SBo tree.