* Split lib/default.nix into several files, as it had become a big

  mess.  Also cleaned up some functions:

  - foldl appeared broken (it recursively called fold).
  - Renamed logicalAND/logicalOR to and/or.
  - Removed listOfListsToAttrs, eqStrings: obsolete.
  - Removed isInList, which does the same thing as elem.
  - stringToCharacters: don't return a "" at the end of the list.
  - Renamed concatList to concat, as concatList (singular) is a
    misnomer: it takes two lists.  Likewise, renamed mergeAttr to
    mergeAttrs.

  misc.nix still contains a lot of stuff that should be refactored and
  moved to other files.

svn path=/nixpkgs/trunk/; revision=14013

1 files changed, 29 insertions, 0 deletions

diff --git a/pkgs/lib/sources.nix b/pkgs/lib/sources.nix
new file mode 100644
index 000000000000..5a321bce7085
--- /dev/null
+++ b/pkgs/lib/sources.nix
@@ -0,0 +1,29 @@
+# Functions for copying sources to the Nix store.
+
+let lib = import ./default.nix; in
+
+rec {
+
+
+  # Bring in a path as a source, filtering out all Subversion and CVS
+  # directories, as well as backup files (*~).
+  cleanSource =
+    let filter = name: type: let baseName = baseNameOf (toString name); in ! (
+      # Filter out Subversion and CVS directories.
+      (type == "directory" && (baseName == ".svn" || baseName == "CVS")) ||
+      # Filter out backup files.
+      (lib.hasSuffix "~" baseName)
+    );
+    in src: builtins.filterSource filter src;
+
+
+  # Get all files ending with the specified suffices from the given
+  # directory.  E.g. `sourceFilesBySuffices ./dir [".xml" ".c"]'.
+  sourceFilesBySuffices = path: exts:
+    let filter = name: type:
+      let base = baseNameOf (toString name);
+      in type != "directory" && lib.any (ext: lib.hasSuffix ext base) exts;
+    in builtins.filterSource filter path;
+
+
+}