add marigold.percentDecode

2 files changed, 13 insertions, 0 deletions

diff --git a/marigold.lua b/marigold.lua
index ac0e061..02c9bbe 100644
--- a/marigold.lua
+++ b/marigold.lua
@@ -121,5 +121,11 @@ marigold.html = function(tbl, indent_level)
 		indent, close)
 end
 
+marigold.percentDecode = function(str)
+	return string.gsub(str, "%%(%x%x)", function(digits)
+		return string.char(tonumber(digits, 16))
+	end)
+end
+
 
 return marigold
diff --git a/test.lua b/test.lua
index a464324..adc166e 100755
--- a/test.lua
+++ b/test.lua
@@ -162,3 +162,10 @@ test("marigold.html correctly renders children", function()
 	<p>p2</p>
 </div>]])
 end)
+
+
+test("marigold.percentDecode correctly decodes percent-encoded strings", function()
+	local str = '%20%21%23%24%25%26%27%28%29%2A%2B%2C%2F%3A%3B%3D%3F%40%5B%5D'
+	assert(marigold.percentDecode(str) == " !#$%&'()*+,/:;=?@[]")
+	assert(marigold.percentDecode('%25+%2b') == '%++')
+end)