From 01fd63f17c80e81218b3d65f1455a62c411dc6ff Mon Sep 17 00:00:00 2001
From: Philipp Gesang <phg42.2a@gmail.com>
Date: Tue, 30 Apr 2013 11:55:11 +0200
Subject: sync with Context from 2013-04-30

---
 lualibs-dir.lua | 23 ++++++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

(limited to 'lualibs-dir.lua')

diff --git a/lualibs-dir.lua b/lualibs-dir.lua
index 00cda38..3d0576e 100644
--- a/lualibs-dir.lua
+++ b/lualibs-dir.lua
@@ -10,7 +10,7 @@ if not modules then modules = { } end modules ['l-dir'] = {
 
 local type, select = type, select
 local find, gmatch, match, gsub = string.find, string.gmatch, string.match, string.gsub
-local concat, insert, remove = table.concat, table.insert, table.remove
+local concat, insert, remove, unpack = table.concat, table.insert, table.remove, table.unpack
 local lpegmatch = lpeg.match
 
 local P, S, R, C, Cc, Cs, Ct, Cv, V = lpeg.P, lpeg.S, lpeg.R, lpeg.C, lpeg.Cc, lpeg.Cs, lpeg.Ct, lpeg.Cv, lpeg.V
@@ -447,3 +447,24 @@ function dir.pop()
     end
     return d
 end
+
+local function found(...) -- can have nil entries
+    for i=1,select("#",...) do
+        local path = select(i,...)
+        local kind = type(path)
+        if kind == "string" then
+            if isdir(path) then
+                return path
+            end
+        elseif kind == "table" then
+            -- here we asume no holes, i.e. an indexed table
+            local path = found(unpack(path))
+            if path then
+                return path
+            end
+        end
+    end
+ -- return nil -- if we want print("crappath") to show something
+end
+
+dir.found = found
-- 
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