static int uread_chars (lua_State *L, FILE *f, size_t n) {
size_t rlen; /* how much to read */
size_t nr; /* number of chars actually read */
luaL_Buffer b;
luaL_wbuffinit(L, &b);
rlen = LUAL_BUFFERSIZE / 2; /* try to read that much each time */
do {
char *p = luaL_prepbuffer(&b);
if (rlen > n) rlen = n; /* cannot read more than asked */
nr = fread(p, sizeof(lua_WChar), rlen, f);
luaL_addwsize(&b, nr);
n -= nr; /* still have to read `n' chars */
} while (n > 0 && nr == rlen); /* until end of count or eof */
luaL_pushresult(&b); /* close buffer */
return (n == 0 || lua_strlen(L, -1) > 0);
}
static int uread_line (lua_State *L, FILE *f) {
luaL_Buffer b;
luaL_wbuffinit(L, &b);
for (;;) {
size_t l;
lua_WChar *p = (lua_WChar*)luaL_prepbuffer(&b);
if (fgetws(p, LUAL_BUFFERSIZE / 2, f) == NULL) { /* eof? */
luaL_pushresult(&b); /* close buffer */
return (lua_strlen(L, -1) > 0); /* check whether read something */
}
l = lua_WChar_len(p);
if (p[l-1] != '\n')
luaL_addwsize(&b, l);
else {
luaL_addwsize(&b, l - 1); /* do not include `eol' */
luaL_pushresult(&b); /* close buffer */
return 1; /* read at least an `eol' */
}
}
}
static int str_gsub (lua_State *L) {
size_t srcl;
const lua_WChar *src = luaL_checklwstring(L, 1, &srcl);
const lua_WChar *p = luaL_checkwstring(L, 2);
int max_s = luaL_optint(L, 4, srcl+1);
int anchor = (*p == '^') ? (p++, 1) : 0;
int n = 0;
MatchState ms;
luaL_Buffer b;
luaL_argcheck(L,
lua_gettop(L) >= 3 && (lua_iswstring(L, 3) || lua_isfunction(L, 3)),
3, "string or function expected");
luaL_wbuffinit(L, &b);
ms.L = L;
ms.src_init = src;
ms.src_end = src+srcl;
while (n < max_s) {
const lua_WChar *e;
ms.level = 0;
e = match(&ms, src, p);
if (e) {
n++;
add_s(&ms, &b, src, e);
}
if (e && e>src) /* non empty match? */
src = e; /* skip it */
else if (src < ms.src_end)
luaL_putwchar(&b, *src++);
else break;
if (anchor) break;
}
luaL_addlwstring(&b, src, ms.src_end-src);
luaL_pushresult(&b);
lua_pushnumber(L, n); /* number of substitutions */
return 2;
}
static int str_lualex(lua_State *L) {
size_t l = 0;
const lua_WChar *str = luaL_checklwstring(L, 1, &l);
int isWide = luaL_checkint(L, 2) != 0;
size_t i;
luaL_Buffer b;
luaL_wbuffinit(L, &b);
for (i = 0; i < l; ++i)
{
// int needUnicodeZero = 1;
switch (str[i])
{
case '\\':
++i;
switch (str[i]) {
case 'a': luaL_putwchar(&b, '\a'); break;
case 'b': luaL_putwchar(&b, '\b'); break;
case 'f': luaL_putwchar(&b, '\f'); break;
case 'n': luaL_putwchar(&b, '\n'); break;
case 'r': luaL_putwchar(&b, '\r'); break;
case 't': luaL_putwchar(&b, '\t'); break;
case 'v': luaL_putwchar(&b, '\v'); break;
case 'x': {
int ch;
++i;
ch = tolower(str[i]);
if (!isdigit(ch) && !(ch >= 'a' && ch <= 'f') )
{
--i;
luaL_putwchar(&b, 'x');
}
else { /* \xxx */
int c = 0;
int i = 0;
int numDigits = isWide ? 4 : 2;
do {
ch = towlower(str[i]);
if (iswdigit((wint_t)ch))
c = 16*c + (ch-'0');
else if (ch >= 'a' && ch <= 'f')
c = 16*c + (ch-'a') + 10;
++i;
ch = towlower(str[i]);
} while (++i<numDigits && iswdigit((wint_t)ch) || (ch >= 'a' && ch <= 'f'));
luaL_putwchar(&b, c);
// needUnicodeZero = 0;
}
break;
}
default: {
if (!iswdigit(str[i]))
luaL_putwchar(&b, str[i]);
else { /* \xxx */
int c = 0;
int count = 0;
do {
c = 10*c + (str[i]-'0');
++i;
} while (++count<3 && iswdigit(str[i]));
luaL_putwchar(&b, c);
}
}
}
break;
default:
luaL_putwchar(&b, str[i]);
}
if (isWide) // && needUnicodeZero)
luaL_putwchar(&b, str[i]);
}
luaL_pushresult(&b);
return 1;
}
int wstr_format_helper (luaL_Buffer* b, lua_State *L, int arg) {
size_t sfl;
const lua_WChar *strfrmt = luaL_checklwstring(L, arg, &sfl);
const lua_WChar *strfrmt_end = strfrmt+sfl;
luaL_wbuffinit(L, b);
while (strfrmt < strfrmt_end) {
if (*strfrmt != '%')
luaL_putwchar(b, *strfrmt++);
else if (*++strfrmt == '%')
luaL_putwchar(b, *strfrmt++); /* %% */
else { /* format item */
lua_WChar form[MAX_FORMAT]; /* to store the format (`%...') */
lua_WChar buff[MAX_ITEM]; /* to store the formatted item */
int hasprecision = 0;
if (iswdigit(*strfrmt) && *(strfrmt+1) == '$')
return luaL_error(L, "obsolete `format' option (d$)");
arg++;
strfrmt = scanformat(L, strfrmt, form, &hasprecision);
switch (*strfrmt++) {
case 'b':
{
buff[1] = buff[2] = buff[3] = buff[4] = buff[5] = buff[6] = buff[7] = buff[8] = 0;
switch (*strfrmt++)
{
case 'b': {
unsigned int num = (unsigned int)luaL_checkint(L, arg);
buff[0] = (unsigned char)num;
luaL_addlwstring(b, buff, 1);
break;
}
case 'd': {
unsigned int num = (unsigned int)luaL_checkint(L, arg);
*(unsigned int*)(&buff) = num;
luaL_addlwstring(b, buff, 4);
break;
}
case 'w': {
unsigned int num = (unsigned int)luaL_checkint(L, arg);
*(unsigned short*)(&buff) = (unsigned short)num;
luaL_addlwstring(b, buff, 2);
break;
}
case 'f': {
float numF = (float)luaL_checknumber(L, arg);
*(float*)(&buff) = numF;
luaL_addlwstring(b, buff, 4);
break;
}
case 'F': {
double numD = (double)luaL_checknumber(L, arg);
*(double*)(&buff) = numD;
luaL_addlwstring(b, buff, 8);
break;
}
default:
break;
}
buff[0] = 0;
break;
}
case 'c': case 'd': case 'i':
swprintf(buff, form, luaL_checkint(L, arg));
break;
case 'o': case 'u': case 'x': case 'X':
//?? How should this be for integers?
swprintf(buff, form, (unsigned int)(luaL_checknumber(L, arg)));
break;
case 'e': case 'E': case 'f':
case 'g': case 'G':
swprintf(buff, form, luaL_checknumber(L, arg));
break;
case 'q':
luaI_addquoted(L, b, arg);
continue; /* skip the `addsize' at the end */
case 'Q':
luaI_addquotedbinary(L, b, arg);
continue; /* skip the `addsize' at the end */
case 's': {
size_t l;
const lua_WChar *s = luaL_checklwstring(L, arg, &l);
if (!hasprecision && l >= 100) {
/* no precision and string is too long to be formatted;
keep original string */
lua_pushvalue(L, arg);
luaL_addvalue(b);
continue; /* skip the `addsize' at the end */
}
else {
swprintf(buff, form, s);
break;
}
}
default: /* also treat cases `pnLlh' */
luaL_error(L, "invalid option in `format'");
}
luaL_addlwstring(b, buff, lua_WChar_len(buff));
}
}
return 1;
}
static int luaB_towstring (lua_State *L) {
char buff[64];
switch (lua_type(L, 1)) {
case LUA_TNUMBER:
lua_pushwstring(L, lua_towstring(L, 1));
return 1;
case LUA_TSTRING: {
luaL_Buffer b;
size_t l;
size_t i;
const char *s = lua_tostring(L, 1);
l = lua_strlen(L, 1);
if (l == 0)
{
lua_pushwstring(L, L"");
}
else
{
luaL_wbuffinit(L, &b);
for (i=0; i<l; i++)
luaL_putwchar(&b, (lua_WChar)s[i]);
luaL_pushresult(&b);
}
return 1;
}
case LUA_TWSTRING:
lua_pushvalue(L, 1);
return 1;
case LUA_TTABLE:
sprintf(buff, "%.40s: %p", lua_type(L, 1), lua_topointer(L, 1));
break;
case LUA_TFUNCTION:
sprintf(buff, "function: %p", lua_topointer(L, 1));
break;
case LUA_TUSERDATA: {
const char *t = lua_typename(L, lua_type(L, 1));
if (strcmp(t, "userdata") == 0)
sprintf(buff, "userdata: %p", lua_touserdata(L, 1));
else
sprintf(buff, "%.40s: %p", t, lua_touserdata(L, 1));
break;
}
case LUA_TNIL:
lua_pushliteral(L, "nil");
return 1;
case LUA_TTHREAD:
sprintf(buff, "thread: %p", (void *)lua_tothread(L, 1));
break;
default:
luaL_argerror(L, 1, "value expected");
}
{
luaL_Buffer b;
size_t l;
size_t i;
const lua_WChar *s = lua_towstring(L, 1);
l = lua_strlen(L, 1);
luaL_wbuffinit(L, &b);
for (i=0; i<l; i++)
luaL_putwchar(&b, (lua_WChar)(s[i]));
luaL_pushresult(&b);
}
/* lua_pushstring(L, buff);*/
return 1;
}
int wwstr_format_helper (luaL_Buffer* b, lua_State *L, int arg) {
size_t sfl;
const lua_WChar *strfrmt = luaL_checklwstring(L, arg, &sfl);
const lua_WChar *strfrmt_end = strfrmt+sfl;
luaL_wbuffinit(L, b);
while (strfrmt < strfrmt_end) {
if (*strfrmt != WL_ESC)
luaL_addwchar(b, *strfrmt++);
else if (*++strfrmt == WL_ESC)
luaL_addwchar(b, *strfrmt++); /* %% */
else { /* format item */
lua_WChar form[MAX_FORMAT]; /* to store the format (`%...') */
lua_WChar buff[MAX_ITEM]; /* to store the formatted item */
char _form[MAX_FORMAT];
char _buff[MAX_ITEM];
if (iswdigit(*strfrmt) && *(strfrmt+1) == '$')
return luaL_error(L, "obsolete `format' option (d$)");
arg++;
strfrmt = wscanformat(L, strfrmt, form);
switch (*strfrmt++) {
case 'c': {
translate_wide_to_single(form, _form);
sprintf(_buff, _form, luaL_checkint(L, arg));
translate_single_to_wide(_buff, buff);
break;
}
case 'd':
case 'i': {
waddintlen(form);
translate_wide_to_single(form, _form);
sprintf(_buff, _form, (LUA_INTFRM_T)luaL_checknumber(L, arg));
translate_single_to_wide(_buff, buff);
break;
}
case 'o':
case 'u':
case 'x':
case 'X': {
//?? How should this be for integers?
translate_wide_to_single(form, _form);
sprintf(_buff, _form, (unsigned LUA_INTFRM_T)luaL_checknumber(L, arg));
translate_single_to_wide(_buff, buff);
break;
}
case 'e':
case 'E':
case 'f':
case 'g':
case 'G': {
translate_wide_to_single(form, _form);
sprintf(_buff, _form, luaL_checknumber(L, arg));
translate_single_to_wide(_buff, buff);
break;
}
case 'q': {
luaI_waddquoted(L, b, arg);
continue; /* skip the 'addsize' at the end */
}
case 's': {
size_t l;
const lua_WChar *s = luaL_checklwstring(L, arg, &l);
(void)s;
if (!lua_WChar_chr(form, '.') && l >= 100) {
/* no precision and string is too long to be formatted;
keep original string */
lua_pushvalue(L, arg);
luaL_addvalue(b);
continue; /* skip the `addsize' at the end */
}
else {
assert(0);
// swprintf((wchar_t*)buff, (wchar_t*)form, s);
break;
}
}
case 'b':
{
buff[1] = buff[2] = buff[3] = buff[4] = buff[5] = buff[6] = buff[7] = buff[8] = 0;
switch (*strfrmt++)
{
case 'b': {
unsigned int num = (unsigned int)luaL_checkint(L, arg);
buff[0] = (unsigned char)num;
luaL_addlwstring(b, buff, 1);
break;
}
case 'd': {
unsigned int num = (unsigned int)luaL_checkint(L, arg);
*(unsigned int*)(&buff) = num;
luaL_addlwstring(b, buff, 4);
break;
}
case 'w': {
unsigned int num = (unsigned int)luaL_checkint(L, arg);
*(unsigned short*)(&buff) = (unsigned short)num;
luaL_addlwstring(b, buff, 2);
break;
}
case 'f': {
float numF = (float)luaL_checknumber(L, arg);
*(float*)(&buff) = numF;
luaL_addlwstring(b, buff, 4);
break;
}
case 'F': {
double numD = (double)luaL_checknumber(L, arg);
*(double*)(&buff) = numD;
luaL_addlwstring(b, buff, 8);
break;
}
default:
break;
}
buff[0] = 0;
break;
}
}
luaL_addlwstring(b, buff, lua_WChar_len(buff));
}
}
return 1;
}
