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--[[
module for format changes in table,string,files...
try to keep non input specific
]]--
module (..., package.seeall)
require ("posix")
require ("fs")
require ("session")
-- find all return characters and removes them, may get this from a browser
-- that is why didn't do file specific
function dostounix ( a )
local data = string.gsub(a, "\r", "")
return data
end
-- search and remove all blank lines and commented lines in a file or table
function remove_blanks_comments ( path )
if type(path) == "string" then
if fs.is_file == "false" then
error("Invalid file!")
else
f = fs.read_file_as_array(path)
end
elseif type(path) == "table" then
f = path
end
local lines = {}
for a,b in ipairs(f) do
local c = string.match(b, "^$") or string.match(b, "^%#")
--this does not take care of lua comments with -- or --[[
if c == nil then lines[#lines + 1] = b end
end
-- returns a table to iterate over without the blank or commented lines
return lines
end
--great for search and replace through a file or table.
--string is easy string.gsub(string, find, replace)
--path can be either a file or a table
function search_replace (path, find, replace)
--would be a string if is a path to a file
if type(path) == "string" then
if fs.is_file == "false" then
error("Invalid file!")
else
f = fs.read_file_as_array(path)
end
elseif type(path) == "table" then
f = path
end
local lines = {}
for a,b in ipairs(f) do
local c = string.gsub(b, find, replace)
lines[#lines + 1] = c end
return lines
end
--great for line searches through a file. /etc/conf.d/ ???
--might be looking for more than one thing so will return a table
--will likely want to match whole line entries
--so we change find to include the rest of the line
-- say want all the _OPTS from a file format.search_for_lines ("/etc/conf.d/cron", "OPT")
function search_for_lines (path, find )
find = "^.*" .. find .. ".*$"
if type(path) == "string" then
if fs.is_file == "false" then
error("Invalid file!")
else
f = format.remove_blanks_comments(path)
end
elseif type(path) == "table" then
f = path
end
--don't want to match commented out lines
local lines = {}
for a,b in ipairs(f) do
local c = string.match(b, find)
lines[#lines +1 ] = c end
return lines
end
--string format function to cap the beginging of each word.
function cap_begin_word ( str )
--first need to do the first word
local data = string.gsub(str, "^%l", string.upper)
--word is any space cause no <> regex
data = string.gsub(data, " %l", string.upper)
return data
end
--give a table of ipairs and turn it into a string
function ipairs_to_string ( t )
for a,b in ipairs(t) do
if a == 1 then
d = b
else
d = d .. "\n" .. b
end
end
return d
end
-- This code comes from http://lua-users.org/wiki/SplitJoin
-- -- example: format.table_to_string( {"Anna", "Bob", "Charlie", "Dolores"}, ",")
function table_to_string (list, delimiter)
local len = #(list)
if len == 0 then
return ""
end
local string = list[1]
for i = 2, len do
string = string .. delimiter .. list[i]
end
return string
end
--for cut functionality do something like
--print(format.string_to_table(" ", "This is a test")[2])
--gives you the second field which is .... is
-- This code comes from http://lua-users.org/wiki/SplitJoin
-- example: format.string_to_table( "Anna, Bob, Charlie,Dolores", ",%s*")
function string_to_table ( text, delimiter)
local list = {}
local pos = 1
-- this would result in endless loops
if string.find("", delimiter, 1) then
error("delimiter matches empty string!")
end
while 1 do
local first, last = string.find(text, delimiter, pos)
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
return list
end
function md5sum_string ( str)
cmd = "/bin/echo -n " .. str .. "|/usr/bin/md5sum|cut -f 1 -d \" \" "
f = io.popen(cmd)
local checksum = {}
for line in f:lines() do
checksum[#checksum + 1] = line
end
f:close()
return checksum[1]
end
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