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lua_glue.c
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#include "universal.h"
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#include "lua_glue.h"
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#include "platform.h"
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#include "fileio.h"
#include "lua.h"
#include "lauxlib.h"
#include "lualib.h"
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#include "gui.h"
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#define MOJOSETUP_NAMESPACE "MojoSetup"
static lua_State *luaState = NULL;
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// Allocator interface for internal Lua use.
static void *MojoLua_alloc(void *ud, void *ptr, size_t osize, size_t nsize)
{
if (nsize == 0)
{
free(ptr);
return NULL;
} // if
return xrealloc(ptr, nsize);
} // MojoLua_alloc
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// Read data from a MojoInput when loading Lua code.
static const char *MojoLua_reader(lua_State *L, void *data, size_t *size)
{
MojoInput *in = (MojoInput *) data;
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char *retval = (char *) scratchbuf_128k;
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int64 br = in->read(in, scratchbuf_128k, sizeof (scratchbuf_128k));
if (br <= 0) // eof or error? (lua doesn't care which?!)
{
br = 0;
retval = NULL;
} // if
*size = (size_t) br;
return retval;
} // MojoLua_reader
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static inline int snprintfcat(char **ptr, size_t *len, const char *fmt, ...)
{
int bw = 0;
va_list ap;
va_start(ap, fmt);
bw = vsnprintf(*ptr, *len, fmt, ap);
va_end(ap);
*ptr += bw;
*len -= bw;
return bw;
} // snprintfcat
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static int luahook_stackwalk(lua_State *L)
{
const char *errstr = lua_tostring(L, 1);
lua_Debug ldbg;
int i = 0;
if (errstr != NULL)
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logDebug("%s\n", errstr);
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logDebug("Lua stack backtrace:");
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// start at 1 to skip this function.
for (i = 1; lua_getstack(L, i, &ldbg); i++)
{
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char *ptr = (char *) scratchbuf_128k;
size_t len = sizeof (scratchbuf_128k);
int bw = snprintfcat(&ptr, &len, "#%d", i-1);
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const int maxspacing = 4;
int spacing = maxspacing - bw;
while (spacing-- > 0)
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snprintfcat(&ptr, &len, " ");
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if (!lua_getinfo(L, "nSl", &ldbg))
{
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snprintfcat(&ptr, &len, "???\n");
logDebug((const char *) scratchbuf_128k);
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continue;
} // if
if (ldbg.namewhat[0])
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snprintfcat(&ptr, &len, "%s ", ldbg.namewhat);
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if ((ldbg.name) && (ldbg.name[0]))
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snprintfcat(&ptr, &len, "function %s ()", ldbg.name);
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else
{
if (strcmp(ldbg.what, "main") == 0)
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snprintfcat(&ptr, &len, "mainline of chunk");
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else if (strcmp(ldbg.what, "tail") == 0)
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snprintfcat(&ptr, &len, "tail call");
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else
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snprintfcat(&ptr, &len, "unidentifiable function");
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} // if
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logDebug((const char *) scratchbuf_128k);
ptr = (char *) scratchbuf_128k;
len = sizeof (scratchbuf_128k);
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for (spacing = 0; spacing < maxspacing; spacing++)
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snprintfcat(&ptr, &len, " ");
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if (strcmp(ldbg.what, "C") == 0)
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snprintfcat(&ptr, &len, "in native code");
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else if (strcmp(ldbg.what, "tail") == 0)
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snprintfcat(&ptr, &len, "in Lua code");
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else if ( (strcmp(ldbg.source, "=?") == 0) && (ldbg.currentline == 0) )
snprintfcat(&ptr, &len, "in Lua code (debug info stripped)");
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else
{
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snprintfcat(&ptr, &len, "in Lua code at %s", ldbg.short_src);
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if (ldbg.currentline != -1)
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snprintfcat(&ptr, &len, ":%d", ldbg.currentline);
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} // else
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logDebug((const char *) scratchbuf_128k);
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} // for
lua_pushstring(L, errstr ? errstr : "");
return 1;
} // luahook_stackwalk
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// This just lets you punch in one-liners and Lua will run them as individual
// chunks, but you can completely access all Lua state, including calling C
// functions and altering tables. At this time, it's more of a "console"
// than a debugger. You can do "p MojoLua_debugger()" from gdb to launch this
// from a breakpoint in native code, or call MojoSetup.debugger() to launch
// it from Lua code (with stacktrace intact, too: type 'bt' to see it).
static int luahook_debugger(lua_State *L)
{
#if DISABLE_LUA_PARSER
logError("Lua debugger is disabled in this build (no parser).");
#else
int origtop;
lua_pushcfunction(luaState, luahook_stackwalk);
origtop = lua_gettop(L);
printf("Quick and dirty Lua debugger. Type 'exit' to quit.\n");
while (true)
{
char *buf = (char *) scratchbuf_128k;
int len = 0;
printf("> ");
fflush(stdout);
if (fgets(buf, sizeof (scratchbuf_128k), stdin) == NULL)
{
printf("\n\n fgets() on stdin failed: ");
break;
} // if
len = (int) (strlen(buf) - 1);
while ( (len >= 0) && ((buf[len] == '\n') || (buf[len] == '\r')) )
buf[len--] = '\0';
if (strcmp(buf, "q") == 0)
break;
else if (strcmp(buf, "exit") == 0)
break;
else if (strcmp(buf, "bt") == 0)
strcpy(buf, "MojoSetup.stackwalk()");
if ( (luaL_loadstring(L, buf) != 0) ||
(lua_pcall(luaState, 0, LUA_MULTRET, -2) != 0) )
{
printf("%s\n", lua_tostring(L, -1));
lua_pop(L, 1);
} // if
else
{
printf("Returned %d values.\n", lua_gettop(L) - origtop);
while (lua_gettop(L) != origtop)
{
// !!! FIXME: dump details of values to stdout here.
lua_pop(L, 1);
} // while
printf("\n");
} // else
} // while
lua_pop(L, 1);
printf("exiting debugger...\n");
#endif
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return 0;
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} // luahook_debugger
void MojoLua_debugger(void)
{
luahook_debugger(luaState);
} // MojoLua_debugger
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boolean MojoLua_runFile(const char *basefname)
{
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MojoArchive *ar = GBaseArchive; // in case we want to generalize later.
const MojoArchiveEntryInfo *entinfo;
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boolean retval = false;
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char clua[128]; // compiled filename.
char ulua[128]; // uncompiled filename.
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int rc = 0;
MojoInput *io = NULL;
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if (snprintf(clua, sizeof (clua), "%s.luac", basefname) >= sizeof (clua))
return false;
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if (snprintf(ulua, sizeof (ulua), "%s.lua", basefname) >= sizeof (ulua))
return false;
if (ar->enumerate(ar, "lua"))
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{
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while ((entinfo = ar->enumNext(ar)) != NULL)
{
boolean match = (strcmp(entinfo->filename, clua) == 0);
#if !DISABLE_LUA_PARSER
if (!match)
match = (strcmp(entinfo->filename, ulua) == 0);
#endif
if (match)
{
if (entinfo->type == MOJOARCHIVE_ENTRY_FILE)
io = ar->openCurrentEntry(ar);
break;
} // if
} // while
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} // if
if (io != NULL)
{
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char *realfname = xmalloc(strlen(entinfo->filename) + 6);
sprintf(realfname, "@lua/%s", entinfo->filename);
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lua_pushcfunction(luaState, luahook_stackwalk);
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rc = lua_load(luaState, MojoLua_reader, io, realfname);
free(realfname);
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io->close(io);
if (rc != 0)
lua_error(luaState);
else
{
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// Call new chunk on top of the stack (lua_pcall will pop it off).
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if (lua_pcall(luaState, 0, 0, -2) != 0) // retvals are dumped.
lua_error(luaState); // error on stack has debug info.
else
retval = true; // if this didn't panic, we succeeded.
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} // if
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lua_pop(luaState, 1); // dump stackwalker.
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} // if
return retval;
} // MojoLua_runFile
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void MojoLua_collectGarbage(void)
{
lua_State *L = luaState;
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uint32 ticks = 0;
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int pre = 0;
int post = 0;
pre = (lua_gc(L, LUA_GCCOUNT, 0) * 1024) + lua_gc(L, LUA_GCCOUNTB, 0);
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logDebug("Collecting garbage (currently using %d bytes).", pre);
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ticks = MojoPlatform_ticks();
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lua_gc (L, LUA_GCCOLLECT, 0);
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profile("Garbage collection", ticks);
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post = (lua_gc(L, LUA_GCCOUNT, 0) * 1024) + lua_gc(L, LUA_GCCOUNTB, 0);
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logDebug("Now using %d bytes (%d bytes savings).\n", post, pre - post);
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} // MojoLua_collectGarbage
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// You can trigger the garbage collector with more control in the standard
// Lua runtime, but this notes profiling and statistics via logDebug().
static int luahook_collectgarbage(lua_State *L)
{
MojoLua_collectGarbage();
return 0;
} // luahook_collectgarbage
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static inline void pushStringOrNil(lua_State *L, const char *str)
{
if (str != NULL)
lua_pushstring(L, str);
else
lua_pushnil(L);
} // pushStringOrNil
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// Since localization is kept in Lua tables, I stuck this in the Lua glue.
const char *translate(const char *str)
{
const char *retval = str;
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if (luaState != NULL) // No translations before Lua is initialized.
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{
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if (lua_checkstack(luaState, 3))
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{
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int popcount = 0;
lua_getglobal(luaState, MOJOSETUP_NAMESPACE); popcount++;
if (lua_istable(luaState, -1)) // namespace is sane?
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{
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lua_getfield(luaState, -1, "translations"); popcount++;
if (lua_istable(luaState, -1)) // translation table is sane?
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{
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const char *tr = NULL;
lua_getfield(luaState, -1, str); popcount++;
tr = lua_tostring(luaState, -1);
if (tr != NULL) // translated for this locale?
{
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char *dst = (char *) scratchbuf_128k;
xstrncpy(dst, tr, sizeof(scratchbuf_128k));
retval = dst;
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} // if
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} // if
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} // if
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lua_pop(luaState, popcount); // remove our stack salsa.
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} // if
} // if
return retval;
} // translate
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// Use this instead of Lua's error() function if you don't have a
// programatic error, so you don't get stack callback stuff:
// MojoSetup.fatal("You need the base game to install this expansion pack.")
// Doesn't actually return.
static int luahook_fatal(lua_State *L)
{
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const char *errstr = lua_tostring(L, 1);
if (errstr == NULL)
errstr = _("Unknown error");
return fatal(errstr); // doesn't actually return.
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const char *err = luaL_checkstring(L, 1);
fatal(err);
return 0;
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} // luahook_fatal
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// Lua interface to MojoLua_runFile(). This is needed instead of Lua's
// require(), since it can access scripts inside an archive.
static int luahook_runfile(lua_State *L)
{
const char *fname = luaL_checkstring(L, 1);
lua_pushboolean(L, MojoLua_runFile(fname));
return 1;
} // luahook_runfile
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// Lua interface to translate().
static int luahook_translate(lua_State *L)
{
const char *str = luaL_checkstring(L, 1);
lua_pushstring(L, translate(str));
return 1;
} // luahook_translate
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static int luahook_ticks(lua_State *L)
{
lua_pushnumber(L, MojoPlatform_ticks());
return 1;
} // luahook_ticks
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static int luahook_msgbox(lua_State *L)
{
if (GGui != NULL)
{
const char *title = luaL_checkstring(L, 1);
const char *text = luaL_checkstring(L, 2);
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GGui->msgbox(title, text);
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} // if
return 0;
} // luahook_msgbox
static int luahook_promptyn(lua_State *L)
{
boolean rc = false;
if (GGui != NULL)
{
const char *title = luaL_checkstring(L, 1);
const char *text = luaL_checkstring(L, 2);
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rc = GGui->promptyn(title, text);
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} // if
lua_pushboolean(L, rc);
return 1;
} // luahook_msgbox
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static int luahook_logwarning(lua_State *L)
{
logWarning(luaL_checkstring(L, 1));
return 0;
} // luahook_logwarning
static int luahook_logerror(lua_State *L)
{
logError(luaL_checkstring(L, 1));
return 0;
} // luahook_logerror
static int luahook_loginfo(lua_State *L)
{
logInfo(luaL_checkstring(L, 1));
return 0;
} // luahook_loginfo
static int luahook_logdebug(lua_State *L)
{
logDebug(luaL_checkstring(L, 1));
return 0;
} // luahook_logdebug
static int luahook_cmdline(lua_State *L)
{
const char *arg = luaL_checkstring(L, 1);
lua_pushboolean(L, cmdline(arg));
return 1;
} // luahook_cmdline
static int luahook_cmdlinestr(lua_State *L)
{
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const int argc = lua_gettop(L);
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const char *arg = luaL_checkstring(L, 1);
const char *envr = (argc < 2) ? NULL : lua_tostring(L, 2);
const char *deflt = (argc < 3) ? NULL : lua_tostring(L, 3);
pushStringOrNil(L, cmdlinestr(arg, envr, deflt));
return 1;
} // luahook_cmdlinestr
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static int luahook_gui_start(lua_State *L)
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{
const char *title = luaL_checkstring(L, 1);
const char *splash = lua_tostring(L, 2);
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lua_pushboolean(L, GGui->start(title, splash));
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return 1;
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} // luahook_gui_start
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static const uint8 *loadFile(const char *fname, size_t *len)
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{
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uint8 *retval = NULL;
MojoInput *io = MojoInput_newFromArchivePath(GBaseArchive, fname);
if (io != NULL)
{
int64 len64 = io->length(io);
*len = (size_t) len64;
if (*len == len64)
{
retval = (uint8 *) xmalloc(*len + 1);
if (io->read(io, retval, *len) == *len)
retval[*len] = '\0';
else
{
free(retval);
retval = NULL;
} // else
} // if
io->close(io);
} // if
return retval;
} // loadFile
static inline boolean canGoBack(int thisstage)
{
return (thisstage > 1);
} // canGoBack
static inline boolean canGoForward(int thisstage, int maxstage)
{
return (thisstage < maxstage);
} // canGoForward
static int luahook_gui_readme(lua_State *L)
{
size_t len = 0;
const char *name = luaL_checkstring(L, 1);
const char *fname = luaL_checkstring(L, 2);
const int thisstage = luaL_checkinteger(L, 3);
const int maxstage = luaL_checkinteger(L, 4);
const uint8 *data = loadFile(fname, &len);
const boolean can_go_back = canGoBack(thisstage);
const boolean can_go_fwd = canGoForward(thisstage, maxstage);
if (data == NULL)
fatal(_("failed to load file '%s'"), fname);
lua_pushboolean(L, GGui->readme(name, data, len, can_go_back, can_go_fwd));
free((void *) data);
return 1;
} // luahook_gui_readme
static int luahook_gui_stop(lua_State *L)
{
GGui->stop();
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return 0;
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} // luahook_gui_stop
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typedef MojoGuiSetupOptions GuiOptions; // a little less chatty.
static inline uint64 file_size_from_string(const char *str)
{
// !!! FIXME: this is WRONG
uint64 retval = (uint64) atoi(str);
size_t len = strlen(str);
if (len > 0)
{
const uint64 ui64_1024 = (uint64) 1024;
char ch = str[len-1];
if ((ch >= 'a') && (ch <= 'z'))
ch -= ('a' - 'A');
if (ch == 'K')
retval *= ui64_1024;
else if (ch == 'M')
retval *= ui64_1024 * ui64_1024;
else if (ch == 'G')
retval *= ui64_1024 * ui64_1024 * ui64_1024;
else if (ch == 'T')
retval *= ui64_1024 * ui64_1024 * ui64_1024 * ui64_1024;
} // if
return retval;
} // file_size_from_string
// forward declare this for recursive magic...
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static GuiOptions *build_gui_options(lua_State *L, GuiOptions *parent);
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// An option table (from Setup.Option{} or Setup.OptionGroup{}) must be at
// the top of the Lua stack.
static GuiOptions *build_one_gui_option(lua_State *L, GuiOptions *opts,
boolean is_option_group)
{
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GuiOptions *newopt = NULL;
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boolean required = false;
boolean skipopt = false;
lua_getfield(L, -1, "required");
if (lua_toboolean(L, -1))
{
lua_pushboolean(L, true);
lua_setfield(L, -3, "value");
required = skipopt = true; // don't pass to GUI.
} // if
lua_pop(L, 1); // remove "required" from stack.
// "disabled=true" trumps "required=true"
lua_getfield(L, -1, "disabled");
if (lua_toboolean(L, -1))
{
if (required)
{
lua_getfield(L, -2, "description");
logWarning("Option '%s' is both required and disabled!",
lua_tostring(L, -1));
lua_pop(L, 1);
} // if
lua_pushboolean(L, false);
lua_setfield(L, -3, "value");
skipopt = true; // don't pass to GUI.
} // if
lua_pop(L, 1); // remove "disabled" from stack.
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if (skipopt) // Skip this option, but look for children in required opts.
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{
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if (required)
newopt = build_gui_options(L, opts);
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} // if
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else // add this option.
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{
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newopt = (GuiOptions *) xmalloc(sizeof (GuiOptions));
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newopt->is_group_parent = is_option_group;
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newopt->value = true;
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lua_getfield(L, -1, "description");
newopt->description = xstrdup(lua_tostring(L, -1));
lua_pop(L, 1);
if (!is_option_group)
{
lua_getfield(L, -1, "value");
newopt->value = (lua_toboolean(L, -1) ? true : false);
lua_pop(L, 1);
lua_getfield(L, -1, "size");
newopt->size = file_size_from_string(lua_tostring(L, -1));
lua_pop(L, 1);
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newopt->opaque = ((int) lua_objlen(L, 4)) + 1;
lua_pushinteger(L, newopt->opaque);
lua_pushvalue(L, -2);
lua_settable(L, 4); // position #4 is our local lookup table.
} // if
newopt->child = build_gui_options(L, newopt); // look for children...
if ((is_option_group) && (!newopt->child)) // skip empty groups.
{
free((void *) newopt->description);
free(newopt);
newopt = NULL;
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} // if
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} // else
if (newopt != NULL)
{
newopt->next_sibling = opts;
opts = newopt; // prepend to list (we'll reverse it later...)
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} // if
return opts;
} // build_one_gui_option
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static inline GuiOptions *cleanup_gui_option_list(GuiOptions *opts,
GuiOptions *parent)
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{
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const boolean is_group = ((parent) && (parent->is_group_parent));
GuiOptions *seen_enabled = NULL;
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GuiOptions *prev = NULL;
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GuiOptions *tmp = NULL;
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while (opts != NULL)
{
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if ((is_group) && (opts->value))
{
if (seen_enabled)
{
logWarning("Options '%s' and '%s' are both enabled in group '%s'.",
seen_enabled->description, opts->description,
parent->description);
seen_enabled->value = false;
} // if
seen_enabled = opts;
} // if
// Reverse the linked list, since we added these backwards before...
tmp = opts->next_sibling;
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opts->next_sibling = prev;
prev = opts;
opts = tmp;
} // while
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if ((prev) && (is_group) && (!seen_enabled))
{
logWarning("Option group '%s' has no enabled items, choosing first ('%s').",
parent->description, prev->description);
prev->value = true;
} // if
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return prev;
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} // cleanup_gui_option_list
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// the top of the stack must be the lua table with options/optiongroups.
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// We build onto (opts) "child" field.
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static GuiOptions *build_gui_options(lua_State *L, GuiOptions *parent)
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{
int i = 0;
GuiOptions *opts = NULL;
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const struct { const char *fieldname; boolean is_group; } opttype[] =
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{
{ "options", false },
{ "optiongroups", true }
};
for (i = 0; i < STATICARRAYLEN(opttype); i++)
{
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const boolean is_group = opttype[i].is_group;
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lua_getfield(L, -1, opttype[i].fieldname);
if (!lua_isnil(L, -1))
{
lua_pushnil(L); // first key for iteration...
while (lua_next(L, -2)) // replaces key, pushes value.
{
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opts = build_one_gui_option(L, opts, is_group);
lua_pop(L, 1); // remove table, keep key for next iteration.
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} // while
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opts = cleanup_gui_option_list(opts, parent);
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} // if
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lua_pop(L, 1); // pop options/optiongroups table.
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} // for
return opts;
} // build_gui_options
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// Free the tree of C structs we generated, and update the mirrored Lua tables
// with new values...
static void done_gui_options(lua_State *L, GuiOptions *opts)
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{
if (opts != NULL)
{
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done_gui_options(L, opts->next_sibling);
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done_gui_options(L, opts->child);
if (opts->opaque)
{
// Update Lua table for this option...
lua_pushinteger(L, opts->opaque);
lua_gettable(L, 4); // #4 is our local table
lua_pushboolean(L, opts->value);
lua_setfield(L, -2, "value");
lua_pop(L, 1);
} // if
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free((void *) opts->description);
free(opts);
} // if
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} // done_gui_options
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static int luahook_gui_options(lua_State *L)
{
// The options table is arg #1.
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const int argc = lua_gettop(L);
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const int thisstage = luaL_checkint(L, 2);
const int maxstage = luaL_checkint(L, 3);
const boolean can_go_back = canGoBack(thisstage);
const boolean can_go_fwd = canGoForward(thisstage, maxstage);
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boolean rc = true;
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GuiOptions *opts = NULL;
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assert(argc == 3);
lua_newtable(L); // we'll use this for updating the tree later.
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// Now we need to build a tree of C structs from the hierarchical table
// we got from Lua...
lua_pushvalue(L, 1); // get the Lua table onto the top of the stack...
752
opts = build_gui_options(L, NULL);
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lua_pop(L, 1); // pop the Lua table off the top of the stack...
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if (opts != NULL) // if nothing to do, we'll go directly to next stage.
rc = GGui->options(opts, can_go_back, can_go_fwd);
done_gui_options(L, opts); // free C structs, update Lua tables...
lua_pop(L, 1); // pop table we created.
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lua_pushboolean(L, rc);
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return 1; // returns one boolean value.
} // luahook_gui_options
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static int luahook_gui_destination(lua_State *L)
{
const int thisstage = luaL_checkinteger(L, 2);
const int maxstage = luaL_checkinteger(L, 3);
const boolean can_go_back = canGoBack(thisstage);
const boolean can_go_fwd = canGoForward(thisstage, maxstage);
char **recommend = NULL;
size_t reccount = 0;
char *rc = NULL;
if (lua_istable(L, 1))
{
int i;
reccount = lua_objlen(L, 1);
recommend = (char **) alloca(reccount * sizeof (char *));
for (i = 0; i < reccount; i++)
{
const char *str = NULL;
lua_pushinteger(L, i+1);
lua_gettable(L, 1);
str = lua_tostring(L, -1);
recommend[i] = (char *) alloca(strlen(str) + 1);
strcpy(recommend[i], str);
lua_pop(L, 1);
} // for
} // if
rc = GGui->destination((const char **) recommend, reccount,
can_go_back, can_go_fwd);
if (rc == NULL)
lua_pushnil(L);
else
{
lua_pushstring(L, rc);
free(rc);
} // else
return 1;
} // luahook_gui_destination
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813
static int luahook_gui_insertmedia(lua_State *L)
{
lua_pushboolean(L, GGui->insertmedia(luaL_checkstring(L, 1)));
return 1;
} // luahook_gui_insertmedia
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820
821
// Sets t[sym]=f, where t is on the top of the Lua stack.
static inline void set_cfunc(lua_State *L, lua_CFunction f, const char *sym)
{
lua_pushcfunction(luaState, f);
lua_setfield(luaState, -2, sym);
} // set_cfunc
822
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826
827
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// Sets t[sym]=f, where t is on the top of the Lua stack.
static inline void set_string(lua_State *L, const char *str, const char *sym)
{
lua_pushstring(luaState, str);
lua_setfield(luaState, -2, sym);
} // set_string
829
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834
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836
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static inline void set_string_array(lua_State *L, int argc, const char **argv,
const char *sym)
{
int i;
lua_newtable(luaState);
for (i = 0; i < argc; i++)
{
lua_pushinteger(luaState, i+1); // lua is option base 1!
lua_pushstring(luaState, argv[i]);
lua_settable(luaState, -3);
} // for
lua_setfield(luaState, -2, sym);
} // set_string_array
void MojoLua_setString(const char *str, const char *sym)
{
lua_getglobal(luaState, MOJOSETUP_NAMESPACE);
set_string(luaState, str, sym);
lua_pop(luaState, 1);
} // MojoLua_setString
void MojoLua_setStringArray(int argc, const char **argv, const char *sym)
{
lua_getglobal(luaState, MOJOSETUP_NAMESPACE);
set_string_array(luaState, argc, argv, sym);
lua_pop(luaState, 1);
} // MojoLua_setStringArray
859
860
861
boolean MojoLua_initLua(void)
{
862
const char *envr = cmdlinestr("locale", "MOJOSETUP_LOCALE", NULL);
863
char locale[16];
864
865
char ostype[64];
char osversion[64];
866
867
868
869
if (envr != NULL)
xstrncpy(locale, envr, sizeof (locale));
else if (!MojoPlatform_locale(locale, sizeof (locale)))
870
xstrncpy(locale, "???", sizeof (locale));
871
872
873
874
875
876
877
if (!MojoPlatform_osType(ostype, sizeof (ostype)))
xstrncpy(ostype, "???", sizeof (ostype));
if (!MojoPlatform_osVersion(osversion, sizeof (osversion)))
xstrncpy(osversion, "???", sizeof (osversion));
assert(luaState == NULL);
878
879
luaState = lua_newstate(MojoLua_alloc, NULL);
880
881
882
if (luaState == NULL)
return false;
883
lua_atpanic(luaState, luahook_fatal);
884
885
886
887
888
889
890
891
892
893
894
895
if (!lua_checkstack(luaState, 20)) // Just in case.
{
lua_close(luaState);
luaState = NULL;
return false;
} // if
luaL_openlibs(luaState);
// Build MojoSetup namespace for Lua to access and fill in C bridges...
lua_newtable(luaState);
896
// Set up initial C functions, etc we want to expose to Lua code...
897
set_cfunc(luaState, luahook_runfile, "runfile");
898
set_cfunc(luaState, luahook_translate, "translate");
899
set_cfunc(luaState, luahook_ticks, "ticks");
900
901
902
set_cfunc(luaState, luahook_fatal, "fatal");
set_cfunc(luaState, luahook_msgbox, "msgbox");
set_cfunc(luaState, luahook_promptyn, "promptyn");
903
set_cfunc(luaState, luahook_stackwalk, "stackwalk");
904
905
906
907
908
909
set_cfunc(luaState, luahook_logwarning, "logwarning");
set_cfunc(luaState, luahook_logerror, "logerror");
set_cfunc(luaState, luahook_loginfo, "loginfo");
set_cfunc(luaState, luahook_logdebug, "logdebug");
set_cfunc(luaState, luahook_cmdline, "cmdline");
set_cfunc(luaState, luahook_cmdlinestr, "cmdlinestr");
910
911
set_cfunc(luaState, luahook_collectgarbage, "collectgarbage");
set_cfunc(luaState, luahook_debugger, "debugger");
912
set_string(luaState, locale, "locale");
913
914
915
916
set_string(luaState, PLATFORM_NAME, "platform");
set_string(luaState, PLATFORM_ARCH, "arch");
set_string(luaState, ostype, "ostype");
set_string(luaState, osversion, "osversion");
917
set_string(luaState, GGui->name(), "ui");
918
set_string(luaState, GBuildVer, "buildver");
919
set_string(luaState, GLuaLicense, "lualicense");
920
set_string_array(luaState, GArgc, GArgv, "argv");
921
922
923
924
925
// Set the GUI functions...
lua_newtable(luaState);
set_cfunc(luaState, luahook_gui_start, "start");
set_cfunc(luaState, luahook_gui_readme, "readme");
926
set_cfunc(luaState, luahook_gui_options, "options");
927
set_cfunc(luaState, luahook_gui_destination, "destination");
928
set_cfunc(luaState, luahook_gui_stop, "stop");
929
set_cfunc(luaState, luahook_gui_insertmedia, "insertmedia");
930
lua_setfield(luaState, -2, "gui");
931
lua_setglobal(luaState, MOJOSETUP_NAMESPACE);
932
933
// Set up localization table, if possible.
934
MojoLua_runFile("localization");
935
936
937
938
// Transfer control to Lua to setup some APIs and state...
if (!MojoLua_runFile("mojosetup_init"))
return false;
939
940
// ...and run the installer-specific config file.
941
942
943
if (!MojoLua_runFile("config"))
return false;
944
// We don't need the "Setup" namespace anymore. Make it
945
// eligible for garbage collection.
946
947
lua_pushnil(luaState);
lua_setglobal(luaState, "Setup");
948
949
950
MojoLua_collectGarbage(); // get rid of old init crap we don't need.
951
952
953
954
return true;
} // MojoLua_initLua
955
956
957
958
959
960
boolean MojoLua_initialized(void)
{
return (luaState != NULL);
} // MojoLua_initialized
961
962
963
964
965
966
967
968
969
void MojoLua_deinitLua(void)
{
if (luaState != NULL)
{
lua_close(luaState);
luaState = NULL;
} // if
} // MojoLua_deinitLua
970
971
const char *GLuaLicense =
972
973
"Lua:\n"
"\n"
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
"Copyright (C) 1994-2006 Lua.org, PUC-Rio.\n"
"\n"
"Permission is hereby granted, free of charge, to any person obtaining a copy\n"
"of this software and associated documentation files (the \"Software\"), to deal\n"
"in the Software without restriction, including without limitation the rights\n"
"to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n"
"copies of the Software, and to permit persons to whom the Software is\n"
"furnished to do so, subject to the following conditions:\n"
"\n"
"The above copyright notice and this permission notice shall be included in\n"
"all copies or substantial portions of the Software.\n"
"\n"
"THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n"
"IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n"
"FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n"
"AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n"
"LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n"
"OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n"
"THE SOFTWARE.\n"
"\n";
995
// end of lua_glue.c ...