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author | Karl Berry <karl@freefriends.org> | 2017-07-21 23:06:28 +0000 |
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committer | Karl Berry <karl@freefriends.org> | 2017-07-21 23:06:28 +0000 |
commit | 3e321b4b1b3ac20d7e239a079279f3d7c666b118 (patch) | |
tree | c71ac38bc9c1b7c1cff29c5a090446e0492765f5 /Master/texmf-dist/doc/luatex | |
parent | 51d74983b14a9c2832b6bfbdcac4e99243aabbb6 (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.lua | 71 |
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 |