1 files changed, 201 insertions, 0 deletions
diff --git a/contrib/luadoc/lua/luadoc/util.lua b/contrib/luadoc/lua/luadoc/util.lua
new file mode 100644
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+++ b/contrib/luadoc/lua/luadoc/util.lua
@@ -0,0 +1,201 @@
+-------------------------------------------------------------------------------
+-- General utilities.
+-- @release $Id: util.lua,v 1.16 2008/02/17 06:42:51 jasonsantos Exp $
+-------------------------------------------------------------------------------
+
+local lfs = require "lfs"
+local type, table, string, io, assert, tostring, setmetatable, pcall = type, table, string, io, assert, tostring, setmetatable, pcall
+
+-------------------------------------------------------------------------------
+-- Module with several utilities that could not fit in a specific module
+
+module "luadoc.util"
+
+-------------------------------------------------------------------------------
+-- Removes spaces from the begining and end of a given string
+-- @param s string to be trimmed
+-- @return trimmed string
+
+function trim (s)
+	return (string.gsub(s, "^%s*(.-)%s*$", "%1"))
+end
+
+-------------------------------------------------------------------------------
+-- Removes spaces from the begining and end of a given string, considering the
+-- string is inside a lua comment.
+-- @param s string to be trimmed
+-- @return trimmed string
+-- @see trim
+-- @see string.gsub
+
+function trim_comment (s)
+	s = string.gsub(s, "%-%-+(.*)$", "%1")
+	return trim(s)
+end
+
+-------------------------------------------------------------------------------
+-- Checks if a given line is empty
+-- @param line string with a line
+-- @return true if line is empty, false otherwise
+
+function line_empty (line)
+	return (string.len(trim(line)) == 0)
+end
+
+-------------------------------------------------------------------------------
+-- Appends two string, but if the first one is nil, use to second one
+-- @param str1 first string, can be nil
+-- @param str2 second string
+-- @return str1 .. " " .. str2, or str2 if str1 is nil
+
+function concat (str1, str2)
+	if str1 == nil or string.len(str1) == 0 then
+		return str2
+	else
+		return str1 .. " " .. str2
+	end
+end
+
+-------------------------------------------------------------------------------
+-- Split text into a list consisting of the strings in text,
+-- separated by strings matching delim (which may be a pattern). 
+-- @param delim if delim is "" then action is the same as %s+ except that 
+-- field 1 may be preceeded by leading whitespace
+-- @usage split(",%s*", "Anna, Bob, Charlie,Dolores")
+-- @usage split(""," x y") gives {"x","y"}
+-- @usage split("%s+"," x y") gives {"", "x","y"}
+-- @return array with strings
+-- @see table.concat
+
+function split(delim, text)
+	local list = {}
+	if string.len(text) > 0 then
+		delim = delim or ""
+		local pos = 1
+		-- if delim matches empty string then it would give an endless loop
+		if string.find("", delim, 1) and delim ~= "" then 
+			error("delim matches empty string!")
+		end
+		local first, last
+		while 1 do
+			if delim ~= "" then 
+				first, last = string.find(text, delim, pos)
+			else
+				first, last = string.find(text, "%s+", pos)
+				if first == 1 then
+					pos = last+1
+					first, last = string.find(text, "%s+", pos)
+				end
+			end
+			if first then -- found?
+				table.insert(list, string.sub(text, pos, first-1))
+				pos = last+1
+			else
+				table.insert(list, string.sub(text, pos))
+				break
+			end
+		end
+	end
+	return list
+end
+
+-------------------------------------------------------------------------------
+-- Comments a paragraph.
+-- @param text text to comment with "--", may contain several lines
+-- @return commented text
+
+function comment (text)
+	text = string.gsub(text, "\n", "\n-- ")
+	return "-- " .. text
+end
+
+-------------------------------------------------------------------------------
+-- Wrap a string into a paragraph.
+-- @param s string to wrap
+-- @param w width to wrap to [80]
+-- @param i1 indent of first line [0]
+-- @param i2 indent of subsequent lines [0]
+-- @return wrapped paragraph
+
+function wrap(s, w, i1, i2)
+	w = w or 80
+	i1 = i1 or 0
+	i2 = i2 or 0
+	assert(i1 < w and i2 < w, "the indents must be less than the line width")
+	s = string.rep(" ", i1) .. s
+	local lstart, len = 1, string.len(s)
+	while len - lstart > w do
+		local i = lstart + w
+		while i > lstart and string.sub(s, i, i) ~= " " do i = i - 1 end
+		local j = i
+		while j > lstart and string.sub(s, j, j) == " " do j = j - 1 end
+		s = string.sub(s, 1, j) .. "\n" .. string.rep(" ", i2) ..
+			string.sub(s, i + 1, -1)
+		local change = i2 + 1 - (i - j)
+		lstart = j + change
+		len = len + change
+	end
+	return s
+end
+
+-------------------------------------------------------------------------------
+-- Opens a file, creating the directories if necessary
+-- @param filename full path of the file to open (or create)
+-- @param mode mode of opening
+-- @return file handle
+
+function lfs.open (filename, mode)
+	local f = io.open(filename, mode)
+	if f == nil then
+		filename = string.gsub(filename, "\\", "/")
+		local dir = ""
+		for d in string.gfind(filename, ".-/") do
+			dir = dir .. d
+			lfs.mkdir(dir)
+		end
+		f = io.open(filename, mode)
+	end
+	return f
+end
+
+
+----------------------------------------------------------------------------------
+-- Creates a Logger with LuaLogging, if present. Otherwise, creates a mock logger.
+-- @param options a table with options for the logging mechanism
+-- @return logger object that will implement log methods
+
+function loadlogengine(options)
+	local logenabled = pcall(function()
+		require "logging"
+		require "logging.console"
+	end)
+	
+	local logging = logenabled and logging
+	
+	if logenabled then
+		if options.filelog then
+			logger = logging.file("luadoc.log") -- use this to get a file log
+		else
+			logger = logging.console("[%level] %message\n")
+		end
+	
+		if options.verbose then
+			logger:setLevel(logging.INFO)
+		else
+			logger:setLevel(logging.WARN)
+		end
+		
+	else
+		noop = {__index=function(...)
+			return function(...)
+				-- noop
+			end
+		end}
+		
+		logger = {} 
+		setmetatable(logger, noop)
+	end
+	
+	return logger
+end
+