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authorPhilipp Gesang <phg42.2a@gmail.com>2014-12-14 12:29:58 +0100
committerPhilipp Gesang <phg42.2a@gmail.com>2014-12-14 12:29:58 +0100
commitc029158f450cd96f71db2f2a4da72a5c946089c0 (patch)
tree1c5d30d6853f6deb57cc9818b8739106a2d5e03f /src/fontloader/misc/fontloader-l-lua.lua
parentea148be27d5a79fd11759856e0ab4033f328ce5a (diff)
parentca673f7b14af906606a188fd98978d3501842f63 (diff)
downloadluaotfload-c029158f450cd96f71db2f2a4da72a5c946089c0.tar.gz
Merge pull request #260 from phi-gamma/master
add import helper, new directory layout, revised letterspacing, fontloader gone nuts
Diffstat (limited to 'src/fontloader/misc/fontloader-l-lua.lua')
-rw-r--r--src/fontloader/misc/fontloader-l-lua.lua167
1 files changed, 167 insertions, 0 deletions
diff --git a/src/fontloader/misc/fontloader-l-lua.lua b/src/fontloader/misc/fontloader-l-lua.lua
new file mode 100644
index 0000000..9565f48
--- /dev/null
+++ b/src/fontloader/misc/fontloader-l-lua.lua
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+if not modules then modules = { } end modules ['l-lua'] = {
+ version = 1.001,
+ comment = "companion to luat-lib.mkiv",
+ author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
+ copyright = "PRAGMA ADE / ConTeXt Development Team",
+ license = "see context related readme files"
+}
+
+-- potential issues with 5.3:
+
+-- i'm not sure yet if the int/float change is good for luatex
+
+-- math.min
+-- math.max
+-- tostring
+-- tonumber
+-- utf.*
+-- bit32
+
+-- compatibility hacksand helpers
+
+local major, minor = string.match(_VERSION,"^[^%d]+(%d+)%.(%d+).*$")
+
+_MAJORVERSION = tonumber(major) or 5
+_MINORVERSION = tonumber(minor) or 1
+_LUAVERSION = _MAJORVERSION + _MINORVERSION/10
+
+-- lpeg
+
+if not lpeg then
+ lpeg = require("lpeg")
+end
+
+-- basics:
+
+if loadstring then
+
+ local loadnormal = load
+
+ function load(first,...)
+ if type(first) == "string" then
+ return loadstring(first,...)
+ else
+ return loadnormal(first,...)
+ end
+ end
+
+else
+
+ loadstring = load
+
+end
+
+-- table:
+
+-- At some point it was announced that i[pairs would be dropped, which makes
+-- sense. As we already used the for loop and # in most places the impact on
+-- ConTeXt was not that large; the remaining ipairs already have been replaced.
+-- Hm, actually ipairs was retained, but we no longer use it anyway (nor
+-- pairs).
+--
+-- Just in case, we provide the fallbacks as discussed in Programming
+-- in Lua (http://www.lua.org/pil/7.3.html):
+
+if not ipairs then
+
+ -- for k, v in ipairs(t) do ... end
+ -- for k=1,#t do local v = t[k] ... end
+
+ local function iterate(a,i)
+ i = i + 1
+ local v = a[i]
+ if v ~= nil then
+ return i, v --, nil
+ end
+ end
+
+ function ipairs(a)
+ return iterate, a, 0
+ end
+
+end
+
+if not pairs then
+
+ -- for k, v in pairs(t) do ... end
+ -- for k, v in next, t do ... end
+
+ function pairs(t)
+ return next, t -- , nil
+ end
+
+end
+
+-- The unpack function has been moved to the table table, and for compatiility
+-- reasons we provide both now.
+
+if not table.unpack then
+
+ table.unpack = _G.unpack
+
+elseif not unpack then
+
+ _G.unpack = table.unpack
+
+end
+
+-- package:
+
+-- if not package.seachers then
+--
+-- package.searchers = package.loaders -- 5.2
+--
+-- elseif not package.loaders then
+--
+-- package.loaders = package.searchers
+--
+-- end
+
+if not package.loaders then -- brr, searchers is a special "loadlib function" userdata type
+
+ package.loaders = package.searchers
+
+end
+
+-- moved from util-deb to here:
+
+local print, select, tostring = print, select, tostring
+
+local inspectors = { }
+
+function setinspector(inspector) -- global function
+ inspectors[#inspectors+1] = inspector
+end
+
+function inspect(...) -- global function
+ for s=1,select("#",...) do
+ local value = select(s,...)
+ local done = false
+ for i=1,#inspectors do
+ done = inspectors[i](value)
+ if done then
+ break
+ end
+ end
+ if not done then
+ print(tostring(value))
+ end
+ end
+end
+
+--
+
+local dummy = function() end
+
+function optionalrequire(...)
+ local ok, result = xpcall(require,dummy,...)
+ if ok then
+ return result
+ end
+end
+
+-- nice for non ascii scripts (this might move):
+
+if lua then
+ lua.mask = load([[τεχ = 1]]) and "utf" or "ascii"
+end