Subversion Repositories Kolibri OS

/*

** $Id: lbaselib.c,v 1.273 2011/11/30 13:03:24 roberto Exp $

** Basic library

** See Copyright Notice in lua.h

*/

#include 

#include 

#include 

#include 

#define lbaselib_c

#define LUA_LIB

#include "lua.h"

#include "lauxlib.h"

#include "lualib.h"

#include "kolibri.h"

#include "console.c"

//KOS console

static int luaB__copen (lua_State *L){

 CONSOLE_INIT("Lua 5.2.0");

return 0;

}

static int luaB__cclose (lua_State *L){

 _exit2(0);

return 0;

}

static int luaB__cprintf (lua_State *L){

  int n = lua_gettop(L);  /* number of arguments */

  int i;

  const  char * s;

  int r[n];

  lua_getglobal(L, "tostring");

  for (i=1; i<=n; i++) {

    lua_pushvalue(L, -1);  /* function to be called */

    lua_pushvalue(L, i);   /* value to print */

    lua_call(L, 1, 1);

    s = lua_tostring(L, -1);

    kprintf ("%s",s);

    lua_pop(L, 1);  /* pop result */

  }

  return 0;

}

static int luaB__cgets (lua_State *L){

size_t nr;  /* number of chars actually read */

  char *p;

  luaL_Buffer b;

  luaL_buffinit(L, &b);

  p = luaL_prepbuffsize(&b, 255);  /* prepare buffer to read whole block */

kgets(p, 255);

nr =  sizeof(p);  /* try to read 'n' chars */

  luaL_addsize(&b, nr);

  luaL_pushresult(&b);  /* close buffer */

  return (nr > 0);  /* true iff read something */

}

//KolibriOS

static int luaB__sysexit (lua_State *L){

 kol_exit();

return 0;

}

static int luaB__paintstart (lua_State *L){

 kol_paint_start();

return 0;

}

static int luaB__paintend (lua_State *L){

 kol_paint_end();

return 0;

}

static int luaB__checkevent (lua_State *L){

 lua_pushnumber(L, kol_event_check());

return 1;

}

static int luaB__waitevent (lua_State *L){

 lua_pushnumber(L, kol_event_wait());

return 1;

}

static int luaB__getkey (lua_State *L){

 lua_pushnumber(L, kol_key_get());

return 1;

}

static int luaB__getbutton (lua_State *L){

 lua_pushnumber(L, kol_btn_get());

return 1;

}

static int luaB__systime (lua_State *L){

 lua_pushnumber(L, kol_system_time_get());

return 1;

}

static int luaB__sysdate (lua_State *L){

 lua_pushnumber(L, kol_system_date_get());

return 1;

}

static int luaB__window (lua_State *L){

  int n = lua_gettop(L);  /* number of arguments */

  int i;

  const  char * s;

  int r[n];

  lua_getglobal(L, "tostring");

  for (i=1; i<=n; i++) {

    lua_pushvalue(L, -1);  /* function to be called */

    lua_pushvalue(L, i);   /* value to print */

    lua_call(L, 1, 1);

    s = lua_tostring(L, -1);

    r[i]=atoi(s);

    lua_pop(L, 1);  /* pop result */

  }

kol_wnd_define (r[1],r[2],r[3],r[4],r[5]);

  return 0;

}

static int luaB__makebutton (lua_State *L){

  int n = lua_gettop(L);  /* number of arguments */

  int i;

  const  char * s;

  int r[n];

  lua_getglobal(L, "tostring");

  for (i=1; i<=n; i++) {

    lua_pushvalue(L, -1);  /* function to be called */

    lua_pushvalue(L, i);   /* value to print */

    lua_call(L, 1, 1);

    s = lua_tostring(L, -1);

    r[i]=atoi(s);

    lua_pop(L, 1);  /* pop result */

  }

 kol_btn_define (r[1],r[2],r[3],r[4],r[5],r[6]);

  return 0;

}

static int luaB__textout (lua_State *L){

  int n = lua_gettop(L);  /* number of arguments */

  int i;

  const  char * s;

  int r[n];

  lua_getglobal(L, "tostring");

  for (i=1; i<=n; i++) {

    lua_pushvalue(L, -1);  /* function to be called */

    lua_pushvalue(L, i);   /* value to print */

    lua_call(L, 1, 1);

    s = lua_tostring(L, -1);

    r[i]=atoi(s);

    lua_pop(L, 1);  /* pop result */

  }

 kol_paint_string (r[1],r[2],r[3],s, strlen(s));

  return 0;

}

/////exp

static int luaB__drawpixel (lua_State *L){

  int n = lua_gettop(L);  /* number of arguments */

  int i;

  const  char * s;

  int r[n];

  lua_getglobal(L, "tostring");

  for (i=1; i<=n; i++) {

    lua_pushvalue(L, -1);  /* function to be called */

    lua_pushvalue(L, i);   /* value to print */

    lua_call(L, 1, 1);

    s = lua_tostring(L, -1);

    r[i]=atoi(s);

    lua_pop(L, 1);  /* pop result */

  }

kol_paint_pixel (r[1],r[2],r[3]);

  return 0;

}

static int luaB__drawline (lua_State *L){

  int n = lua_gettop(L);  /* number of arguments */

  int i;

  const  char * s;

  int r[n];

  lua_getglobal(L, "tostring");

  for (i=1; i<=n; i++) {

    lua_pushvalue(L, -1);  /* function to be called */

    lua_pushvalue(L, i);   /* value to print */

    lua_call(L, 1, 1);

    s = lua_tostring(L, -1);

    r[i]=atoi(s);

    lua_pop(L, 1);  /* pop result */

  }

kol_paint_line (r[1],r[2],r[3],r[4],r[5]);

  return 0;

}

//KolibriOS

static int luaB_print (lua_State *L) {

  int n = lua_gettop(L);  /* number of arguments */

  int i;

  lua_getglobal(L, "tostring");

  for (i=1; i<=n; i++) {

    const char *s;

    size_t l;

    lua_pushvalue(L, -1);  /* function to be called */

    lua_pushvalue(L, i);   /* value to print */

    lua_call(L, 1, 1);

    s = lua_tolstring(L, -1, &l);  /* get result */

    if (s == NULL)

      return luaL_error(L,

         LUA_QL("tostring") " must return a string to " LUA_QL("print"));

    if (i>1) luai_writestring("\t", 1);

    luai_writestring(s, l);

    lua_pop(L, 1);  /* pop result */

  }

  luai_writeline();

  return 0;

}

#define SPACECHARS	" \f\n\r\t\v"

static int luaB_tonumber (lua_State *L) {

  if (lua_isnoneornil(L, 2)) {  /* standard conversion */

    int isnum;

    lua_Number n = lua_tonumberx(L, 1, &isnum);

    if (isnum) {

      lua_pushnumber(L, n);

      return 1;

    }  /* else not a number; must be something */

    luaL_checkany(L, 1);

  }

  else {

    size_t l;

    const char *s = luaL_checklstring(L, 1, &l);

    const char *e = s + l;  /* end point for 's' */

    int base = luaL_checkint(L, 2);

    int neg = 0;

    luaL_argcheck(L, 2 <= base && base <= 36, 2, "base out of range");

    s += strspn(s, SPACECHARS);  /* skip initial spaces */

    if (*s == '-') { s++; neg = 1; }  /* handle signal */

    else if (*s == '+') s++;

    if (isalnum((unsigned char)*s)) {

      lua_Number n = 0;

      do {

        int digit = (isdigit((unsigned char)*s)) ? *s - '0'

                       : toupper((unsigned char)*s) - 'A' + 10;

        if (digit >= base) break;  /* invalid numeral; force a fail */

        n = n * (lua_Number)base + (lua_Number)digit;

        s++;

      } while (isalnum((unsigned char)*s));

      s += strspn(s, SPACECHARS);  /* skip trailing spaces */

      if (s == e) {  /* no invalid trailing characters? */

        lua_pushnumber(L, (neg) ? -n : n);

        return 1;

      }  /* else not a number */

    }  /* else not a number */

  }

  lua_pushnil(L);  /* not a number */

  return 1;

}

static int luaB_error (lua_State *L) {

  int level = luaL_optint(L, 2, 1);

  lua_settop(L, 1);

  if (lua_isstring(L, 1) && level > 0) {  /* add extra information? */

    luaL_where(L, level);

    lua_pushvalue(L, 1);

    lua_concat(L, 2);

  }

  return lua_error(L);

}

static int luaB_getmetatable (lua_State *L) {

  luaL_checkany(L, 1);

  if (!lua_getmetatable(L, 1)) {

    lua_pushnil(L);

    return 1;  /* no metatable */

  }

  luaL_getmetafield(L, 1, "__metatable");

  return 1;  /* returns either __metatable field (if present) or metatable */

}

static int luaB_setmetatable (lua_State *L) {

  int t = lua_type(L, 2);

  luaL_checktype(L, 1, LUA_TTABLE);

  luaL_argcheck(L, t == LUA_TNIL || t == LUA_TTABLE, 2,

                    "nil or table expected");

  if (luaL_getmetafield(L, 1, "__metatable"))

    return luaL_error(L, "cannot change a protected metatable");

  lua_settop(L, 2);

  lua_setmetatable(L, 1);

  return 1;

}

static int luaB_rawequal (lua_State *L) {

  luaL_checkany(L, 1);

  luaL_checkany(L, 2);

  lua_pushboolean(L, lua_rawequal(L, 1, 2));

  return 1;

}

static int luaB_rawlen (lua_State *L) {

  int t = lua_type(L, 1);

  luaL_argcheck(L, t == LUA_TTABLE || t == LUA_TSTRING, 1,

                   "table or string expected");

  lua_pushinteger(L, lua_rawlen(L, 1));

  return 1;

}

static int luaB_rawget (lua_State *L) {

  luaL_checktype(L, 1, LUA_TTABLE);

  luaL_checkany(L, 2);

  lua_settop(L, 2);

  lua_rawget(L, 1);

  return 1;

}

static int luaB_rawset (lua_State *L) {

  luaL_checktype(L, 1, LUA_TTABLE);

  luaL_checkany(L, 2);

  luaL_checkany(L, 3);

  lua_settop(L, 3);

  lua_rawset(L, 1);

  return 1;

}

static int luaB_collectgarbage (lua_State *L) {

  static const char *const opts[] = {"stop", "restart", "collect",

    "count", "step", "setpause", "setstepmul",

    "setmajorinc", "isrunning", "generational", "incremental", NULL};

  static const int optsnum[] = {LUA_GCSTOP, LUA_GCRESTART, LUA_GCCOLLECT,

    LUA_GCCOUNT, LUA_GCSTEP, LUA_GCSETPAUSE, LUA_GCSETSTEPMUL,

    LUA_GCSETMAJORINC, LUA_GCISRUNNING, LUA_GCGEN, LUA_GCINC};

  int o = optsnum[luaL_checkoption(L, 1, "collect", opts)];

  int ex = luaL_optint(L, 2, 0);

  int res = lua_gc(L, o, ex);

  switch (o) {

    case LUA_GCCOUNT: {

      int b = lua_gc(L, LUA_GCCOUNTB, 0);

      lua_pushnumber(L, res + ((lua_Number)b/1024));

      lua_pushinteger(L, b);

      return 2;

    }

    case LUA_GCSTEP: case LUA_GCISRUNNING: {

      lua_pushboolean(L, res);

      return 1;

    }

    default: {

      lua_pushinteger(L, res);

      return 1;

    }

  }

}

static int luaB_type (lua_State *L) {

  luaL_checkany(L, 1);

  lua_pushstring(L, luaL_typename(L, 1));

  return 1;

}

static int pairsmeta (lua_State *L, const char *method, int iszero,

                      lua_CFunction iter) {

  if (!luaL_getmetafield(L, 1, method)) {  /* no metamethod? */

    luaL_checktype(L, 1, LUA_TTABLE);  /* argument must be a table */

    lua_pushcfunction(L, iter);  /* will return generator, */

    lua_pushvalue(L, 1);  /* state, */

    if (iszero) lua_pushinteger(L, 0);  /* and initial value */

    else lua_pushnil(L);

  }

  else {

    lua_pushvalue(L, 1);  /* argument 'self' to metamethod */

    lua_call(L, 1, 3);  /* get 3 values from metamethod */

  }

  return 3;

}

static int luaB_next (lua_State *L) {

  luaL_checktype(L, 1, LUA_TTABLE);

  lua_settop(L, 2);  /* create a 2nd argument if there isn't one */

  if (lua_next(L, 1))

    return 2;

  else {

    lua_pushnil(L);

    return 1;

  }

}

static int luaB_pairs (lua_State *L) {

  return pairsmeta(L, "__pairs", 0, luaB_next);

}

static int ipairsaux (lua_State *L) {

  int i = luaL_checkint(L, 2);

  luaL_checktype(L, 1, LUA_TTABLE);

  i++;  /* next value */

  lua_pushinteger(L, i);

  lua_rawgeti(L, 1, i);

  return (lua_isnil(L, -1)) ? 1 : 2;

}

static int luaB_ipairs (lua_State *L) {

  return pairsmeta(L, "__ipairs", 1, ipairsaux);

}

static int load_aux (lua_State *L, int status) {

  if (status == LUA_OK)

    return 1;

  else {

    lua_pushnil(L);

    lua_insert(L, -2);  /* put before error message */

    return 2;  /* return nil plus error message */

  }

}

static int luaB_loadfile (lua_State *L) {

  const char *fname = luaL_optstring(L, 1, NULL);

  const char *mode = luaL_optstring(L, 2, NULL);

  int env = !lua_isnone(L, 3);  /* 'env' parameter? */

  int status = luaL_loadfilex(L, fname, mode);

  if (status == LUA_OK && env) {  /* 'env' parameter? */

    lua_pushvalue(L, 3);

    lua_setupvalue(L, -2, 1);  /* set it as 1st upvalue of loaded chunk */

  }

  return load_aux(L, status);

}

/*

** {======================================================

** Generic Read function

** =======================================================

*/

/*

** reserved slot, above all arguments, to hold a copy of the returned

** string to avoid it being collected while parsed. 'load' has four

** optional arguments (chunk, source name, mode, and environment).

*/

#define RESERVEDSLOT	5

/*

** Reader for generic `load' function: `lua_load' uses the

** stack for internal stuff, so the reader cannot change the

** stack top. Instead, it keeps its resulting string in a

** reserved slot inside the stack.

*/

static const char *generic_reader (lua_State *L, void *ud, size_t *size) {

  (void)(ud);  /* not used */

  luaL_checkstack(L, 2, "too many nested functions");

  lua_pushvalue(L, 1);  /* get function */

  lua_call(L, 0, 1);  /* call it */

  if (lua_isnil(L, -1)) {

    *size = 0;

    return NULL;

  }

  else if (!lua_isstring(L, -1))

    luaL_error(L, "reader function must return a string");

  lua_replace(L, RESERVEDSLOT);  /* save string in reserved slot */

  return lua_tolstring(L, RESERVEDSLOT, size);

}

static int luaB_load (lua_State *L) {

  int status;

  size_t l;

  int top = lua_gettop(L);

  const char *s = lua_tolstring(L, 1, &l);

  const char *mode = luaL_optstring(L, 3, "bt");

  if (s != NULL) {  /* loading a string? */

    const char *chunkname = luaL_optstring(L, 2, s);

    status = luaL_loadbufferx(L, s, l, chunkname, mode);

  }

  else {  /* loading from a reader function */

    const char *chunkname = luaL_optstring(L, 2, "=(load)");

    luaL_checktype(L, 1, LUA_TFUNCTION);

    lua_settop(L, RESERVEDSLOT);  /* create reserved slot */

    status = lua_load(L, generic_reader, NULL, chunkname, mode);

  }

  if (status == LUA_OK && top >= 4) {  /* is there an 'env' argument */

    lua_pushvalue(L, 4);  /* environment for loaded function */

    lua_setupvalue(L, -2, 1);  /* set it as 1st upvalue */

  }

  return load_aux(L, status);

}

/* }====================================================== */

static int dofilecont (lua_State *L) {

  return lua_gettop(L) - 1;

}

static int luaB_dofile (lua_State *L) {

  const char *fname = luaL_optstring(L, 1, NULL);

  lua_settop(L, 1);

  if (luaL_loadfile(L, fname) != LUA_OK) lua_error(L);

  lua_callk(L, 0, LUA_MULTRET, 0, dofilecont);

  return dofilecont(L);

}

static int luaB_assert (lua_State *L) {

  if (!lua_toboolean(L, 1))

    return luaL_error(L, "%s", luaL_optstring(L, 2, "assertion failed!"));

  return lua_gettop(L);

}

static int luaB_select (lua_State *L) {

  int n = lua_gettop(L);

  if (lua_type(L, 1) == LUA_TSTRING && *lua_tostring(L, 1) == '#') {

    lua_pushinteger(L, n-1);

    return 1;

  }

  else {

    int i = luaL_checkint(L, 1);

    if (i < 0) i = n + i;

    else if (i > n) i = n;

    luaL_argcheck(L, 1 <= i, 1, "index out of range");

    return n - i;

  }

}

static int finishpcall (lua_State *L, int status) {

  if (!lua_checkstack(L, 1)) {  /* no space for extra boolean? */

    lua_settop(L, 0);  /* create space for return values */

    lua_pushboolean(L, 0);

    lua_pushstring(L, "stack overflow");

    return 2;  /* return false, msg */

  }

  lua_pushboolean(L, status);  /* first result (status) */

  lua_replace(L, 1);  /* put first result in first slot */

  return lua_gettop(L);

}

static int pcallcont (lua_State *L) {

  int status = lua_getctx(L, NULL);

  return finishpcall(L, (status == LUA_YIELD));

}

static int luaB_pcall (lua_State *L) {

  int status;

  luaL_checkany(L, 1);

  lua_pushnil(L);

  lua_insert(L, 1);  /* create space for status result */

  status = lua_pcallk(L, lua_gettop(L) - 2, LUA_MULTRET, 0, 0, pcallcont);

  return finishpcall(L, (status == LUA_OK));

}

static int luaB_xpcall (lua_State *L) {

  int status;

  int n = lua_gettop(L);

  luaL_argcheck(L, n >= 2, 2, "value expected");

  lua_pushvalue(L, 1);  /* exchange function... */

  lua_copy(L, 2, 1);  /* ...and error handler */

  lua_replace(L, 2);

  status = lua_pcallk(L, n - 2, LUA_MULTRET, 1, 0, pcallcont);

  return finishpcall(L, (status == LUA_OK));

}

static int luaB_tostring (lua_State *L) {

  luaL_checkany(L, 1);

  luaL_tolstring(L, 1, NULL);

  return 1;

}

static const luaL_Reg base_funcs[] = {

  {"assert", luaB_assert},

  {"collectgarbage", luaB_collectgarbage},

  {"dofile", luaB_dofile},

  {"error", luaB_error},

  {"getmetatable", luaB_getmetatable},

  {"ipairs", luaB_ipairs},

  {"loadfile", luaB_loadfile},

  {"load", luaB_load},

#if defined(LUA_COMPAT_LOADSTRING)

  {"loadstring", luaB_load},

#endif

  {"next", luaB_next},

  {"pairs", luaB_pairs},

  {"pcall", luaB_pcall},

  {"print", luaB_print},

  {"rawequal", luaB_rawequal},

  {"rawlen", luaB_rawlen},

  {"rawget", luaB_rawget},

  {"rawset", luaB_rawset},

  {"select", luaB_select},

  {"setmetatable", luaB_setmetatable},

  {"tonumber", luaB_tonumber},

  {"tostring", luaB_tostring},

  {"type", luaB_type},

  {"xpcall", luaB_xpcall},

{"sysexit", luaB__sysexit},

{"paintstart", luaB__paintstart},

{"paintend", luaB__paintend},

{"window", luaB__window},

 {"checkevent", luaB__checkevent},

 {"waitevent", luaB__waitevent},

{"getkey", luaB__getkey},

{"getbutton", luaB__getbutton},

{"makebutton", luaB__makebutton},

{"textout", luaB__textout},

{"sysdate", luaB__sysdate},

{"systime", luaB__systime},

{"drawline", luaB__drawline},

{"drawpixel", luaB__drawpixel},

{"copen", luaB__copen},

{"cclose", luaB__cclose},

{"cprintf", luaB__cprintf},

{"cgets", luaB__cgets},

  {NULL, NULL}

};

LUAMOD_API int luaopen_base (lua_State *L) {

  /* set global _G */

  lua_pushglobaltable(L);

  lua_pushglobaltable(L);

  lua_setfield(L, -2, "_G");

  /* open lib into global table */

  luaL_setfuncs(L, base_funcs, 0);

  lua_pushliteral(L, LUA_VERSION);

  lua_setfield(L, -2, "_VERSION");  /* set global _VERSION */

  return 1;

}