Add import_build_vars to shell_utils.sh

Bug: 383124666
Test: treehugger
Change-Id: Ibd65da819821a7b0c0e1959aab523e54df8ca258

1 files changed, 16 insertions, 0 deletions

diff --git a/shell_utils.sh b/shell_utils.sh
index 9053c42e75..3124db598c 100644
--- a/shell_utils.sh
+++ b/shell_utils.sh
@@ -214,3 +214,19 @@ function log_tool_invocation()
     ' SIGINT SIGTERM SIGQUIT EXIT
 }
 
+# Import the build variables supplied as arguments into this shell's environment.
+# For absolute variables, prefix the variable name with a '/'. For example:
+#    import_build_vars OUT_DIR DIST_DIR /HOST_OUT_EXECUTABLES
+# Returns nonzero if the build command failed. Stderr is passed through.
+function import_build_vars()
+{
+    require_top
+    local script
+    script=$(cd $TOP && build/soong/bin/get_build_vars "$@")
+    local ret=$?
+    if [ $ret -ne 0 ] ; then
+        return $ret
+    fi
+    eval "$script"
+    return $?
+}