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authorKarl Berry <karl@freefriends.org>2017-07-21 23:06:28 +0000
committerKarl Berry <karl@freefriends.org>2017-07-21 23:06:28 +0000
commit3e321b4b1b3ac20d7e239a079279f3d7c666b118 (patch)
treec71ac38bc9c1b7c1cff29c5a090446e0492765f5 /Master/texmf-dist/doc/luatex
parent51d74983b14a9c2832b6bfbdcac4e99243aabbb6 (diff)
luapackageloader.lua in runtime
git-svn-id: svn://tug.org/texlive/trunk@44865 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Master/texmf-dist/doc/luatex')
-rw-r--r--Master/texmf-dist/doc/luatex/luapackageloader/luapackageloader.lua71
1 files changed, 0 insertions, 71 deletions
diff --git a/Master/texmf-dist/doc/luatex/luapackageloader/luapackageloader.lua b/Master/texmf-dist/doc/luatex/luapackageloader/luapackageloader.lua
deleted file mode 100644
index 7ebd5b63e31..00000000000
--- a/Master/texmf-dist/doc/luatex/luapackageloader/luapackageloader.lua
+++ /dev/null
@@ -1,71 +0,0 @@
--- Author: Deepak Jois
--- License: http://www.latex-project.org/lppl.txt
--- Date: 2017/05/26
--- Version: 0.1
-local luapackageloader = {}
-
--- Cache the current kpse based searchers
-local kpse_lua_searcher = package.searchers[2]
-local kpse_clua_searcher = package.searchers[3]
-
--- Emulates the default package.searchers[2] searcher.
-local function lua_searcher(name)
- local file, err = package.searchpath(name,package.path)
- if err then
- return string.format("[lua searcher]: module not found: '%s'%s", name, err)
- else
- return loadfile(file)
- end
-end
-
--- Emulates the default package.searchers[3] searcher.
-local function clua_searcher(name)
- local file, err = package.searchpath(name, package.cpath)
- if err then
- return string.format("[lua C searcher]: module not found: '%s'%s", name,err)
- else
- local symbol = name:gsub("%.","_")
- return package.loadlib(file, "luaopen_"..symbol)
- end
-end
-
-local function combine_searchers(searcher1, searcher2)
- return function(name)
- local loader1 = searcher1(name)
- if type(loader1) == "string" then -- Not found using searcher1. Try searcher2.
- local loader2 = searcher2(name)
- if type(loader2) == "string" then -- Not found using searcher2. Return error.
- return string.format("%s\n\t%s", loader1, loader2)
- end
- return loader2
- end
- return loader1
- end
-end
-
---- Use package.path and package.cpath to find Lua modules,
--- in case kpse searching fails.
---
--- Package searching logic is overridden by default in LuaTeX to use kpse.
--- Calling this function reverts the searchers to use package.path and
--- package.cpath, if the kpse based searcher is not able to locate
--- a module.
---
--- Package Loading References:
--- 1. http://www.lua.org/manual/5.2/manual.html#pdf-package.searchers
--- 2. LuaTeX Manual, Section 3.2, Lua behavior
-function luapackageloader.add_lua_searchers()
- package.searchers[2] = combine_searchers(kpse_lua_searcher, lua_searcher)
- package.searchers[3] = combine_searchers(kpse_clua_searcher, clua_searcher)
-end
-
---- Restore the kpse package searchers that are used by default in LuaTeX.
---
--- Call this to restore the default LuaTeX behavior for searching packages,
--- if you had earlier overridden it using `luapackageloader.add_lua_searchers()`.
-function luapackageloader.restore_kpse_searchers()
- package.searchers[2] = kpse_lua_searcher
- package.searchers[3] = kpse_clua_searcher
-end
-
-return luapackageloader