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1 files changed, 50 insertions, 0 deletions

diff --git a/scripts/granger/lib/string.lua b/scripts/granger/lib/string.lua
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+--
+-- string.lua
+-- Additions to Lua's built-in string functions.
+-- Copyright (c) 2002-2008 Jason Perkins and the Premake project
+--
+
+
+--
+-- Returns an array of strings, each of which is a substring of s
+-- formed by splitting on boundaries formed by `pattern`.
+-- 
+
+	function string.explode(s, pattern, plain)
+		if (pattern == '') then return false end
+		local pos = 0
+		local arr = { }
+		for st,sp in function() return s:find(pattern, pos, plain) end do
+			table.insert(arr, s:sub(pos, st-1))
+			pos = sp + 1
+		end
+		table.insert(arr, s:sub(pos))
+		return arr
+	end
+	
+
+
+--
+-- Find the last instance of a pattern in a string.
+--
+
+	function string.findlast(s, pattern, plain)
+		local curr = 0
+		repeat
+			local next = s:find(pattern, curr + 1, plain)
+			if (next) then curr = next end
+		until (not next)
+		if (curr > 0) then
+			return curr
+		end	
+	end
+
+
+
+--
+-- Returns true if `haystack` starts with the sequence `needle`.
+--
+
+	function string.startswith(haystack, needle)
+		return (haystack:find(needle, 1, true) == 1)
+	end