Fix external cell reference in OSS build.

Reviewed By: hramos

Differential Revision: D8615578

fbshipit-source-id: 22a0382956adc3c2cb0d25f756cd5fad11564559

ReactAndroid/src/main/jni/first-party/fb/BUCK

@@ -1,5 +1,4 @@
-load("@xplat//tools/build_defs:glob_defs.bzl", "subdir_glob")
-load("//ReactNative:DEFS.bzl", "IS_OSS_BUILD", "JNI_TARGET", "cxx_library")
+load("//ReactNative:DEFS.bzl", "IS_OSS_BUILD", "JNI_TARGET", "cxx_library", "subdir_glob")
 
 # This target is only used in open source
 if IS_OSS_BUILD:

ReactNative/DEFS.bzl

@@ -179,3 +179,84 @@ def cxx_library(allow_jni_merging=None, **kwargs):
         if not (k.startswith("fbandroid_") or k.startswith("fbobjc_"))
     }
     native.cxx_library(**args)
+
+def _paths_join(path, *others):
+  """Joins one or more path components."""
+  result = path
+
+  for p in others:
+    if p.startswith("/"):  # absolute
+      result = p
+    elif not result or result.endswith("/"):
+      result += p
+    else:
+      result += "/" + p
+
+  return result
+
+def subdir_glob(glob_specs, exclude = None, prefix = ""):
+    """Returns a dict of sub-directory relative paths to full paths.
+
+    The subdir_glob() function is useful for defining header maps for C/C++
+    libraries which should be relative the given sub-directory.
+    Given a list of tuples, the form of (relative-sub-directory, glob-pattern),
+    it returns a dict of sub-directory relative paths to full paths.
+
+    Please refer to native.glob() for explanations and examples of the pattern.
+
+    Args:
+      glob_specs: The array of tuples in form of
+        (relative-sub-directory, glob-pattern inside relative-sub-directory).
+        type: List[Tuple[str, str]]
+      exclude: A list of patterns to identify files that should be removed
+        from the set specified by the first argument. Defaults to [].
+        type: Optional[List[str]]
+      prefix: If is not None, prepends it to each key in the dictionary.
+        Defaults to None.
+        type: Optional[str]
+
+    Returns:
+      A dict of sub-directory relative paths to full paths.
+    """
+    if exclude == None:
+        exclude = []
+
+    results = []
+
+    for dirpath, glob_pattern in glob_specs:
+        results.append(
+            _single_subdir_glob(dirpath, glob_pattern, exclude, prefix),
+        )
+
+    return _merge_maps(*results)
+
+def _merge_maps(*file_maps):
+    result = {}
+    for file_map in file_maps:
+        for key in file_map:
+            if key in result and result[key] != file_map[key]:
+                fail(
+                    "Conflicting files in file search paths. " +
+                    "\"%s\" maps to both \"%s\" and \"%s\"." %
+                    (key, result[key], file_map[key]),
+                )
+
+            result[key] = file_map[key]
+
+    return result
+
+def _single_subdir_glob(dirpath, glob_pattern, exclude = None, prefix = None):
+    if exclude == None:
+        exclude = []
+    results = {}
+    files = native.glob([_paths_join(dirpath, glob_pattern)], exclude = exclude)
+    for f in files:
+        if dirpath:
+            key = f[len(dirpath) + 1:]
+        else:
+            key = f
+        if prefix:
+            key = _paths_join(prefix, key)
+        results[key] = f
+
+    return results