1if not modules then modules = { } end modules ['libs-imp-lzo'] = {
2 version = 1.001,
3 comment = "companion to luat-lib.mkxl",
4 author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
5 copyright = "PRAGMA ADE / ConTeXt Development Team",
6 license = "see context related readme files"
7}
8
9
10
11local libname = "lzo"
12local libfile = "liblzo"
13
14local lzolib = resolvers.libraries.validoptional(libname)
15
16if not lzolib then return end
17
18local lzo_compress = lzolib.compress
19local lzo_decompresssize = lzolib.decompresssize
20
21local function okay()
22 if resolvers.libraries.optionalloaded(libname,libfile) then
23 okay = function() return true end
24 else
25 okay = function() return false end
26 end
27 return okay()
28end
29
30local lzo = {
31 compress = function (...) return okay() and lzo_compress (...) end,
32 decompresssize = function (...) return okay() and lzo_decompresssize(...) end,
33}
34
35package.loaded[libname] = lzo
36
37return lzo
38 |