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Replace lua's default lua module loader with one which uses our UTF-8-supporting script reader.

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Originally committed to SVN as r4060.
This commit is contained in:
Thomas Goyne 2010-01-28 01:13:13 +00:00
parent 4343fb44ef
commit b5064f8fc9
2 changed files with 39 additions and 2 deletions
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40
aegisub/src/auto4_lua.cpp
View file

@ -201,13 +201,18 @@ namespace Automation4 {
wxFileName path(StandardPaths::DecodePath(toker.GetNextToken()));
if (path.IsOk() && !path.IsRelative() && path.DirExists()) {
wxCharBuffer p = path.GetLongPath().utf8_str();
lua_pushfstring(L, ";%s/?.lua;%s/?/init.lua", p.data(), p.data());
lua_pushfstring(L, ";%s?.lua;%s?/init.lua", p.data(), p.data());
lua_concat(L, 2);
}
}
lua_settable(L, -3);
lua_pop(L, 1); // pop package
// Replace the default lua module loader with our utf-8 compatible one
lua_getfield(L, -1, "loaders");
lua_pushcfunction(L, LuaModuleLoader);
lua_rawseti(L, -2, 2);
lua_pop(L, 2);
_stackcheck.check_stack(0);
// prepare stuff in the registry
@ -408,6 +413,37 @@ namespace Automation4 {
return 4;
}
/// @brief Module loader which uses our include rather than Lua's, for unicode file support
/// @param L The Lua state
/// @return Always 1 per loader_Lua?
int LuaScript::LuaModuleLoader(lua_State *L)
{
int pretop = lua_gettop(L);
wxString module(lua_tostring(L, -1), wxConvUTF8);
module.Replace(".", LUA_DIRSEP);
lua_getglobal(L, "package");
lua_pushstring(L, "path");
lua_gettable(L, -2);
wxString package_paths(lua_tostring(L, -1), wxConvUTF8);
lua_pop(L, 2);
wxStringTokenizer toker(package_paths, L";", wxTOKEN_STRTOK);
while (toker.HasMoreTokens()) {
wxString filename = toker.GetNextToken();
filename.Replace(L"?", module);
if (wxFileName::FileExists(filename)) {
LuaScriptReader script_reader(filename);
if (lua_load(L, script_reader.reader_func, &script_reader, filename.utf8_str())) {
lua_pushfstring(L, "Error loading Lua module \"%s\":\n\n%s", filename.utf8_str().data(), lua_tostring(L, -1));
lua_error(L);
return lua_gettop(L) - pretop;
}
}
}
return lua_gettop(L) - pretop;
}
/// @brief DOCME
/// @param L
/// @return

1
aegisub/src/auto4_lua.h
View file

@ -293,6 +293,7 @@ namespace Automation4 {
static int LuaTextExtents(lua_State *L);
static int LuaInclude(lua_State *L);
static int LuaModuleLoader(lua_State *L);
static int LuaFrameFromMs(lua_State *L);
static int LuaMsFromFrame(lua_State *L);
static int LuaVideoSize(lua_State *L);