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-rw-r--r--examples/redis-unstable/deps/lua/src/lua_struct.c429
1 files changed, 0 insertions, 429 deletions
diff --git a/examples/redis-unstable/deps/lua/src/lua_struct.c b/examples/redis-unstable/deps/lua/src/lua_struct.c
deleted file mode 100644
index c58c8e7..0000000
--- a/examples/redis-unstable/deps/lua/src/lua_struct.c
+++ /dev/null
@@ -1,429 +0,0 @@
-/*
-** {======================================================
-** Library for packing/unpacking structures.
-** $Id: struct.c,v 1.7 2018/05/11 22:04:31 roberto Exp $
-** See Copyright Notice at the end of this file
-** =======================================================
-*/
-/*
-** Valid formats:
-** > - big endian
-** < - little endian
-** ![num] - alignment
-** x - pading
-** b/B - signed/unsigned byte
-** h/H - signed/unsigned short
-** l/L - signed/unsigned long
-** T - size_t
-** i/In - signed/unsigned integer with size 'n' (default is size of int)
-** cn - sequence of 'n' chars (from/to a string); when packing, n==0 means
- the whole string; when unpacking, n==0 means use the previous
- read number as the string length
-** s - zero-terminated string
-** f - float
-** d - double
-** ' ' - ignored
-*/
-
-
-#include <assert.h>
-#include <ctype.h>
-#include <limits.h>
-#include <stddef.h>
-#include <string.h>
-
-
-#include "lua.h"
-#include "lauxlib.h"
-
-
-#if (LUA_VERSION_NUM >= 502)
-
-#define luaL_register(L,n,f) luaL_newlib(L,f)
-
-#endif
-
-
-/* basic integer type */
-#if !defined(STRUCT_INT)
-#define STRUCT_INT long
-#endif
-
-typedef STRUCT_INT Inttype;
-
-/* corresponding unsigned version */
-typedef unsigned STRUCT_INT Uinttype;
-
-
-/* maximum size (in bytes) for integral types */
-#define MAXINTSIZE 32
-
-/* is 'x' a power of 2? */
-#define isp2(x) ((x) > 0 && ((x) & ((x) - 1)) == 0)
-
-/* dummy structure to get alignment requirements */
-struct cD {
- char c;
- double d;
-};
-
-
-#define PADDING (sizeof(struct cD) - sizeof(double))
-#define MAXALIGN (PADDING > sizeof(int) ? PADDING : sizeof(int))
-
-
-/* endian options */
-#define BIG 0
-#define LITTLE 1
-
-
-static union {
- int dummy;
- char endian;
-} const native = {1};
-
-
-typedef struct Header {
- int endian;
- int align;
-} Header;
-
-
-static int getnum (lua_State *L, const char **fmt, int df) {
- if (!isdigit(**fmt)) /* no number? */
- return df; /* return default value */
- else {
- int a = 0;
- do {
- if (a > (INT_MAX / 10) || a * 10 > (INT_MAX - (**fmt - '0')))
- luaL_error(L, "integral size overflow");
- a = a*10 + *((*fmt)++) - '0';
- } while (isdigit(**fmt));
- return a;
- }
-}
-
-
-#define defaultoptions(h) ((h)->endian = native.endian, (h)->align = 1)
-
-
-
-static size_t optsize (lua_State *L, char opt, const char **fmt) {
- switch (opt) {
- case 'B': case 'b': return sizeof(char);
- case 'H': case 'h': return sizeof(short);
- case 'L': case 'l': return sizeof(long);
- case 'T': return sizeof(size_t);
- case 'f': return sizeof(float);
- case 'd': return sizeof(double);
- case 'x': return 1;
- case 'c': return getnum(L, fmt, 1);
- case 'i': case 'I': {
- int sz = getnum(L, fmt, sizeof(int));
- if (sz > MAXINTSIZE)
- luaL_error(L, "integral size %d is larger than limit of %d",
- sz, MAXINTSIZE);
- return sz;
- }
- default: return 0; /* other cases do not need alignment */
- }
-}
-
-
-/*
-** return number of bytes needed to align an element of size 'size'
-** at current position 'len'
-*/
-static int gettoalign (size_t len, Header *h, int opt, size_t size) {
- if (size == 0 || opt == 'c') return 0;
- if (size > (size_t)h->align)
- size = h->align; /* respect max. alignment */
- return (size - (len & (size - 1))) & (size - 1);
-}
-
-
-/*
-** options to control endianess and alignment
-*/
-static void controloptions (lua_State *L, int opt, const char **fmt,
- Header *h) {
- switch (opt) {
- case ' ': return; /* ignore white spaces */
- case '>': h->endian = BIG; return;
- case '<': h->endian = LITTLE; return;
- case '!': {
- int a = getnum(L, fmt, MAXALIGN);
- if (!isp2(a))
- luaL_error(L, "alignment %d is not a power of 2", a);
- h->align = a;
- return;
- }
- default: {
- const char *msg = lua_pushfstring(L, "invalid format option '%c'", opt);
- luaL_argerror(L, 1, msg);
- }
- }
-}
-
-
-static void putinteger (lua_State *L, luaL_Buffer *b, int arg, int endian,
- int size) {
- lua_Number n = luaL_checknumber(L, arg);
- Uinttype value;
- char buff[MAXINTSIZE];
- if (n < 0)
- value = (Uinttype)(Inttype)n;
- else
- value = (Uinttype)n;
- if (endian == LITTLE) {
- int i;
- for (i = 0; i < size; i++) {
- buff[i] = (value & 0xff);
- value >>= 8;
- }
- }
- else {
- int i;
- for (i = size - 1; i >= 0; i--) {
- buff[i] = (value & 0xff);
- value >>= 8;
- }
- }
- luaL_addlstring(b, buff, size);
-}
-
-
-static void correctbytes (char *b, int size, int endian) {
- if (endian != native.endian) {
- int i = 0;
- while (i < --size) {
- char temp = b[i];
- b[i++] = b[size];
- b[size] = temp;
- }
- }
-}
-
-
-static int b_pack (lua_State *L) {
- luaL_Buffer b;
- const char *fmt = luaL_checkstring(L, 1);
- Header h;
- int arg = 2;
- size_t totalsize = 0;
- defaultoptions(&h);
- lua_pushnil(L); /* mark to separate arguments from string buffer */
- luaL_buffinit(L, &b);
- while (*fmt != '\0') {
- int opt = *fmt++;
- size_t size = optsize(L, opt, &fmt);
- int toalign = gettoalign(totalsize, &h, opt, size);
- totalsize += toalign;
- while (toalign-- > 0) luaL_addchar(&b, '\0');
- switch (opt) {
- case 'b': case 'B': case 'h': case 'H':
- case 'l': case 'L': case 'T': case 'i': case 'I': { /* integer types */
- putinteger(L, &b, arg++, h.endian, size);
- break;
- }
- case 'x': {
- luaL_addchar(&b, '\0');
- break;
- }
- case 'f': {
- float f = (float)luaL_checknumber(L, arg++);
- correctbytes((char *)&f, size, h.endian);
- luaL_addlstring(&b, (char *)&f, size);
- break;
- }
- case 'd': {
- double d = luaL_checknumber(L, arg++);
- correctbytes((char *)&d, size, h.endian);
- luaL_addlstring(&b, (char *)&d, size);
- break;
- }
- case 'c': case 's': {
- size_t l;
- const char *s = luaL_checklstring(L, arg++, &l);
- if (size == 0) size = l;
- luaL_argcheck(L, l >= (size_t)size, arg, "string too short");
- luaL_addlstring(&b, s, size);
- if (opt == 's') {
- luaL_addchar(&b, '\0'); /* add zero at the end */
- size++;
- }
- break;
- }
- default: controloptions(L, opt, &fmt, &h);
- }
- totalsize += size;
- }
- luaL_pushresult(&b);
- return 1;
-}
-
-
-static lua_Number getinteger (const char *buff, int endian,
- int issigned, int size) {
- Uinttype l = 0;
- int i;
- if (endian == BIG) {
- for (i = 0; i < size; i++) {
- l <<= 8;
- l |= (Uinttype)(unsigned char)buff[i];
- }
- }
- else {
- for (i = size - 1; i >= 0; i--) {
- l <<= 8;
- l |= (Uinttype)(unsigned char)buff[i];
- }
- }
- if (!issigned)
- return (lua_Number)l;
- else { /* signed format */
- Uinttype mask = (Uinttype)(~((Uinttype)0)) << (size*8 - 1);
- if (l & mask) /* negative value? */
- l |= mask; /* signal extension */
- return (lua_Number)(Inttype)l;
- }
-}
-
-
-static int b_unpack (lua_State *L) {
- Header h;
- const char *fmt = luaL_checkstring(L, 1);
- size_t ld;
- const char *data = luaL_checklstring(L, 2, &ld);
- size_t pos = luaL_optinteger(L, 3, 1);
- luaL_argcheck(L, pos > 0, 3, "offset must be 1 or greater");
- pos--; /* Lua indexes are 1-based, but here we want 0-based for C
- * pointer math. */
- int n = 0; /* number of results */
- defaultoptions(&h);
- while (*fmt) {
- int opt = *fmt++;
- size_t size = optsize(L, opt, &fmt);
- pos += gettoalign(pos, &h, opt, size);
- luaL_argcheck(L, size <= ld && pos <= ld - size,
- 2, "data string too short");
- /* stack space for item + next position */
- luaL_checkstack(L, 2, "too many results");
- switch (opt) {
- case 'b': case 'B': case 'h': case 'H':
- case 'l': case 'L': case 'T': case 'i': case 'I': { /* integer types */
- int issigned = islower(opt);
- lua_Number res = getinteger(data+pos, h.endian, issigned, size);
- lua_pushnumber(L, res); n++;
- break;
- }
- case 'x': {
- break;
- }
- case 'f': {
- float f;
- memcpy(&f, data+pos, size);
- correctbytes((char *)&f, sizeof(f), h.endian);
- lua_pushnumber(L, f); n++;
- break;
- }
- case 'd': {
- double d;
- memcpy(&d, data+pos, size);
- correctbytes((char *)&d, sizeof(d), h.endian);
- lua_pushnumber(L, d); n++;
- break;
- }
- case 'c': {
- if (size == 0) {
- if (n == 0 || !lua_isnumber(L, -1))
- luaL_error(L, "format 'c0' needs a previous size");
- size = lua_tonumber(L, -1);
- lua_pop(L, 1); n--;
- luaL_argcheck(L, size <= ld && pos <= ld - size,
- 2, "data string too short");
- }
- lua_pushlstring(L, data+pos, size); n++;
- break;
- }
- case 's': {
- const char *e = (const char *)memchr(data+pos, '\0', ld - pos);
- if (e == NULL)
- luaL_error(L, "unfinished string in data");
- size = (e - (data+pos)) + 1;
- lua_pushlstring(L, data+pos, size - 1); n++;
- break;
- }
- default: controloptions(L, opt, &fmt, &h);
- }
- pos += size;
- }
- lua_pushinteger(L, pos + 1); /* next position */
- return n + 1;
-}
-
-
-static int b_size (lua_State *L) {
- Header h;
- const char *fmt = luaL_checkstring(L, 1);
- size_t pos = 0;
- defaultoptions(&h);
- while (*fmt) {
- int opt = *fmt++;
- size_t size = optsize(L, opt, &fmt);
- pos += gettoalign(pos, &h, opt, size);
- if (opt == 's')
- luaL_argerror(L, 1, "option 's' has no fixed size");
- else if (opt == 'c' && size == 0)
- luaL_argerror(L, 1, "option 'c0' has no fixed size");
- if (!isalnum(opt))
- controloptions(L, opt, &fmt, &h);
- pos += size;
- }
- lua_pushinteger(L, pos);
- return 1;
-}
-
-/* }====================================================== */
-
-
-
-static const struct luaL_Reg thislib[] = {
- {"pack", b_pack},
- {"unpack", b_unpack},
- {"size", b_size},
- {NULL, NULL}
-};
-
-
-LUALIB_API int luaopen_struct (lua_State *L);
-
-LUALIB_API int luaopen_struct (lua_State *L) {
- luaL_register(L, "struct", thislib);
- return 1;
-}
-
-
-/******************************************************************************
-* Copyright (C) 2010-2018 Lua.org, PUC-Rio. All rights reserved.
-*
-* Permission is hereby granted, free of charge, to any person obtaining
-* a copy of this software and associated documentation files (the
-* "Software"), to deal in the Software without restriction, including
-* without limitation the rights to use, copy, modify, merge, publish,
-* distribute, sublicense, and/or sell copies of the Software, and to
-* permit persons to whom the Software is furnished to do so, subject to
-* the following conditions:
-*
-* The above copyright notice and this permission notice shall be
-* included in all copies or substantial portions of the Software.
-*
-* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
-* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
-* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
-* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
-* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-******************************************************************************/
-
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