zip_manifest_creator: fix rlocation on Windows

Apparently `rlocation` is not defined in the
environment of regular sh_binary rules, only in
tests. So this commit adds an implementation for
it.

See https://github.com/bazelbuild/bazel/issues/3264

Change-Id: I70ecb91cef5e1b66679e6ba04823831183da5cd9
PiperOrigin-RevId: 161775438

tools/android/zip_manifest_creator.sh

diff --git a/tools/android/zip_manifest_creator.sh b/tools/android/zip_manifest_creator.sh
index d28b261..4507572 100755
--- a/tools/android/zip_manifest_creator.sh
+++ b/tools/android/zip_manifest_creator.sh
@@ -36,6 +36,19 @@
   IS_WINDOWS=true
 esac
 
+if "$IS_WINDOWS" && ! type rlocation &> /dev/null; then
+  function rlocation() {
+    # Use 'sed' instead of 'awk', so if the absolute path ($2) has spaces, it
+    # will be printed completely.
+    local result="$(grep "$1" "${RUNFILES_MANIFEST_FILE}" | head -1)"
+    # If the entry has a space, it is a mapping from a runfiles-path to absolute
+    # path, otherwise it resolves to itself.
+    echo "$result" | grep -q " " \
+        && echo "$result" | sed 's/^[^ ]* //' \
+        || echo "$result"
+  }
+fi
+
 # For @bazel_tools//tools/android:zip_manifest_creator in BUILD.tools, zipper is here:
 #   Windows (in MANIFEST):  <repository_name>/tools/zip/zipper/zipper.exe
 #   Linux/MacOS (symlink):  ${RUNFILES}/<repository_name>/tools/zip/zipper/zipper
@@ -57,9 +70,9 @@
 if [ ! -x "$ZIPPER" ]; then
   echo >&2 "ERROR: $(basename $0): could not find zipper executable. Additional info:"
   echo >&2 "  \$0=($0)"
-  echo >&2 "  \$RUNFILES=($RUNFILES)"
-  echo >&2 "  \$RUNFILES_MANIFEST_FILE=($RUNFILES_MANIFEST_FILE)"
-  echo >&2 "  \$IS_WINDOWS=($IS_WINDOWS)"
+  echo >&2 "  RUNFILES=($RUNFILES)"
+  echo >&2 "  RUNFILES_MANIFEST_FILE=($RUNFILES_MANIFEST_FILE)"
+  echo >&2 "  IS_WINDOWS=($IS_WINDOWS)"
   if "$IS_WINDOWS"; then
     echo >&2 "  grep=($(grep zipper "$RUNFILES_MANIFEST_FILE"))"
   else