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@ -1,5 +1,5 @@ |
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/*
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** $Id: lstrlib.c,v 1.191 2014/03/31 18:38:26 roberto Exp roberto $ |
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** $Id: lstrlib.c,v 1.192 2014/04/03 13:29:24 roberto Exp roberto $ |
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** Standard library for string operations and pattern-matching |
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** See Copyright Notice in lua.h |
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*/ |
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@ -989,7 +989,7 @@ static int getintsize (lua_State *L, int arg) { |
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} |
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static int packint (char *buff, lua_Integer n, int littleendian, int size) { |
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static int dumpint (char *buff, lua_Integer n, int littleendian, int size) { |
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int i; |
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if (littleendian) { |
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for (i = 0; i < size - 1; i++) { |
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@ -1005,18 +1005,18 @@ static int packint (char *buff, lua_Integer n, int littleendian, int size) { |
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} |
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buff[i] = (n & MC); /* last byte */ |
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/* test for overflow: OK if there are only zeros left in higher bytes,
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or if there are only ones left and packed number is negative (signal |
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or if there are only ones left and dumped number is negative (signal |
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bit, the higher bit in last byte, is one) */ |
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return ((n & ~(lua_Integer)MC) == 0 || (n | SM) == ~(lua_Integer)0); |
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} |
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static int packint_l (lua_State *L) { |
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static int dumpint_l (lua_State *L) { |
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char buff[MAXINTSIZE]; |
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lua_Integer n = luaL_checkinteger(L, 1); |
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int size = getintsize(L, 2); |
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int endian = getendian(L, 3); |
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if (packint(buff, n, endian, size)) |
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if (dumpint(buff, n, endian, size)) |
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lua_pushlstring(L, buff, size); |
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else |
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luaL_error(L, "integer does not fit into given size (%d)", size); |
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@ -1030,7 +1030,7 @@ static int packint_l (lua_State *L) { |
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/* mask to check higher-order byte + signal bit of next (lower) byte */ |
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#define HIGHERBYTE1 (HIGHERBYTE | (HIGHERBYTE >> 1)) |
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static int unpackint (const char *buff, lua_Integer *res, |
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static int undumpint (const char *buff, lua_Integer *res, |
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int littleendian, int size) { |
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lua_Integer n = 0; |
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int i; |
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@ -1057,7 +1057,7 @@ static int unpackint (const char *buff, lua_Integer *res, |
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} |
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static int unpackint_l (lua_State *L) { |
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static int undumpint_l (lua_State *L) { |
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lua_Integer res; |
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size_t len; |
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const char *s = luaL_checklstring(L, 1, &len); |
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@ -1066,7 +1066,7 @@ static int unpackint_l (lua_State *L) { |
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int endian = getendian(L, 4); |
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luaL_argcheck(L, 1 <= pos && (size_t)pos + size - 1 <= len, 1, |
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"string too short"); |
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if(unpackint(s + pos - 1, &res, endian, size)) |
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if(undumpint(s + pos - 1, &res, endian, size)) |
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lua_pushinteger(L, res); |
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else |
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luaL_error(L, "result does not fit into a Lua integer"); |
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@ -1096,7 +1096,7 @@ static int getfloatsize (lua_State *L, int arg) { |
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} |
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static int packfloat_l (lua_State *L) { |
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static int dumpfloat_l (lua_State *L) { |
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float f; double d; |
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char *pn; /* pointer to number */ |
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lua_Number n = luaL_checknumber(L, 1); |
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@ -1118,7 +1118,7 @@ static int packfloat_l (lua_State *L) { |
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} |
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static int unpackfloat_l (lua_State *L) { |
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static int undumpfloat_l (lua_State *L) { |
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lua_Number res; |
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size_t len; |
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const char *s = luaL_checklstring(L, 1, &len); |
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@ -1165,10 +1165,10 @@ static const luaL_Reg strlib[] = { |
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{"reverse", str_reverse}, |
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{"sub", str_sub}, |
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{"upper", str_upper}, |
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{"packfloat", packfloat_l}, |
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{"packint", packint_l}, |
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{"unpackfloat", unpackfloat_l}, |
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{"unpackint", unpackint_l}, |
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{"dumpfloat", dumpfloat_l}, |
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{"dumpint", dumpint_l}, |
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{"undumpfloat", undumpfloat_l}, |
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{"undumpint", undumpint_l}, |
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{NULL, NULL} |
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}; |
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