Emulation/pcsx-redux
1
0
Fork 0
mirror of https://github.com/grumpycoders/pcsx-redux.git synced 2024-06-01 02:38:33 -04:00
Code Issues Packages Projects Releases Wiki Activity
pcsx-redux/third_party/lua-protobuf/pb.c
Nicolas Pixel Noble f506f642f5 Adding lua-protobuf
2022-12-18 23:05:47 -08:00

2126 lines
66 KiB
C
Raw Blame History

#ifdef _MSC_VER
# define _CRT_SECURE_NO_WARNINGS
# define _CRT_NONSTDC_NO_WARNINGS
# pragma warning(disable: 4244) /* int -> char */
# pragma warning(disable: 4706) /* = in if condition */
# pragma warning(disable: 4709) /* comma in array index */
# pragma warning(disable: 4127) /* const in if condition */
#endif
#define PB_STATIC_API
#include "pb.h"
PB_NS_BEGIN
#define LUA_LIB
#include <lua.h>
#include <lauxlib.h>
#include <stdio.h>
#include <errno.h>
/* Lua util routines */
#define PB_STATE "pb.State"
#define PB_BUFFER "pb.Buffer"
#define PB_SLICE "pb.Slice"
#define check_buffer(L,idx) ((pb_Buffer*)luaL_checkudata(L,idx,PB_BUFFER))
#define test_buffer(L,idx) ((pb_Buffer*)luaL_testudata(L,idx,PB_BUFFER))
#define check_slice(L,idx) ((pb_Slice*)luaL_checkudata(L,idx,PB_SLICE))
#define test_slice(L,idx) ((pb_Slice*)luaL_testudata(L,idx,PB_SLICE))
#define push_slice(L,s) lua_pushlstring((L), (s).p, pb_len((s)))
#define return_self(L) { return lua_settop(L, 1), 1; }
static int lpb_relindex(int idx, int offset) {
return idx < 0 && idx > LUA_REGISTRYINDEX ? idx - offset : idx;
}
#if LUA_VERSION_NUM < 502
#include <assert.h>
# define LUA_OK 0
# define lua_rawlen lua_objlen
# define luaL_setfuncs(L,l,n) (assert(n==0), luaL_register(L,NULL,l))
# define luaL_setmetatable(L, name) \
(luaL_getmetatable((L), (name)), lua_setmetatable(L, -2))
static void lua_rawgetp(lua_State *L, int idx, const void *p) {
lua_pushlightuserdata(L, (void*)p);
lua_rawget(L, lpb_relindex(idx, 1));
}
static void lua_rawsetp(lua_State *L, int idx, const void *p) {
lua_pushlightuserdata(L, (void*)p);
lua_insert(L, -2);
lua_rawset(L, lpb_relindex(idx, 1));
}
#ifndef LUA_GCISRUNNING /* not LuaJIT 2.1 */
#define luaL_newlib(L,l) (lua_newtable(L), luaL_register(L,NULL,l))
static lua_Integer lua_tointegerx(lua_State *L, int idx, int *isint) {
lua_Integer i = lua_tointeger(L, idx);
if (isint) *isint = (i != 0 || lua_type(L, idx) == LUA_TNUMBER);
return i;
}
static lua_Number lua_tonumberx(lua_State *L, int idx, int *isnum) {
lua_Number i = lua_tonumber(L, idx);
if (isnum) *isnum = (i != 0 || lua_type(L, idx) == LUA_TNUMBER);
return i;
}
static void *luaL_testudata(lua_State *L, int idx, const char *type) {
void *p = lua_touserdata(L, idx);
if (p != NULL && lua_getmetatable(L, idx)) {
lua_getfield(L, LUA_REGISTRYINDEX, type);
if (!lua_rawequal(L, -2, -1))
p = NULL;
lua_pop(L, 2);
return p;
}
return NULL;
}
#endif
#ifdef LUAI_BITSINT /* not LuaJIT */
#include <errno.h>
static int luaL_fileresult(lua_State *L, int stat, const char *fname) {
int en = errno;
if (stat) return lua_pushboolean(L, 1), 1;
lua_pushnil(L);
lua_pushfstring(L, "%s: %s", fname, strerror(en));
/*if (fname) lua_pushfstring(L, "%s: %s", fname, strerror(en));
else lua_pushstring(L, strerror(en));*//* NOT USED */
lua_pushinteger(L, en);
return 3;
}
#endif /* not LuaJIT */
#endif
#if LUA_VERSION_NUM >= 503
# define lua53_getfield lua_getfield
# define lua53_rawgeti lua_rawgeti
# define lua53_rawgetp lua_rawgetp
#else /* not Lua 5.3 */
static int lua53_getfield(lua_State *L, int idx, const char *field)
{ return lua_getfield(L, idx, field), lua_type(L, -1); }
static int lua53_rawgeti(lua_State *L, int idx, lua_Integer i)
{ return lua_rawgeti(L, idx, i), lua_type(L, -1); }
static int lua53_rawgetp(lua_State *L, int idx, const void *p)
{ return lua_rawgetp(L, idx, p), lua_type(L, -1); }
#endif
/* protobuf global state */
#define lpbS_state(LS) ((LS)->state)
#define lpb_name(LS,s) pb_name(lpbS_state(LS), (s), &(LS)->cache)
static const pb_State *global_state = NULL;
static const char state_name[] = PB_STATE;
enum lpb_Int64Mode { LPB_NUMBER, LPB_STRING, LPB_HEXSTRING };
enum lpb_EncodeMode { LPB_DEFDEF, LPB_COPYDEF, LPB_METADEF, LPB_NODEF };
typedef struct lpb_State {
const pb_State *state;
pb_State local;
pb_Cache cache;
pb_Buffer buffer;
int defs_index;
int enc_hooks_index;
int dec_hooks_index;
unsigned use_dec_hooks : 1;
unsigned use_enc_hooks : 1;
unsigned enum_as_value : 1;
unsigned encode_mode : 2; /* lpb_EncodeMode */
unsigned int64_mode : 2; /* lpb_Int64Mode */
unsigned encode_default_values : 1;
unsigned decode_default_array : 1;
unsigned decode_default_message : 1;
unsigned encode_order : 1;
} lpb_State;
static int lpb_reftable(lua_State *L, int ref) {
if (ref != LUA_NOREF) {
lua_rawgeti(L, LUA_REGISTRYINDEX, ref);
return ref;
} else {
lua_newtable(L);
lua_pushvalue(L, -1);
return luaL_ref(L, LUA_REGISTRYINDEX);
}
}
static void lpb_pushdeftable(lua_State *L, lpb_State *LS)
{ LS->defs_index = lpb_reftable(L, LS->defs_index); }
static void lpb_pushenchooktable(lua_State *L, lpb_State *LS)
{ LS->enc_hooks_index = lpb_reftable(L, LS->enc_hooks_index); }
static void lpb_pushdechooktable(lua_State *L, lpb_State *LS)
{ LS->dec_hooks_index = lpb_reftable(L, LS->dec_hooks_index); }
static int Lpb_delete(lua_State *L) {
lpb_State *LS = (lpb_State*)luaL_testudata(L, 1, PB_STATE);
if (LS != NULL) {
const pb_State *GS = global_state;
pb_free(&LS->local);
if (&LS->local == GS)
global_state = NULL;
LS->state = NULL;
pb_resetbuffer(&LS->buffer);
luaL_unref(L, LUA_REGISTRYINDEX, LS->defs_index);
luaL_unref(L, LUA_REGISTRYINDEX, LS->enc_hooks_index);
luaL_unref(L, LUA_REGISTRYINDEX, LS->dec_hooks_index);
}
return 0;
}
LUALIB_API lpb_State *lpb_lstate(lua_State *L) {
lpb_State *LS;
if (lua53_rawgetp(L, LUA_REGISTRYINDEX, state_name) == LUA_TUSERDATA) {
LS = (lpb_State*)lua_touserdata(L, -1);
lua_pop(L, 1);
} else {
lua_pop(L, 1);
LS = (lpb_State*)lua_newuserdata(L, sizeof(lpb_State));
memset(LS, 0, sizeof(lpb_State));
LS->defs_index = LUA_NOREF;
LS->enc_hooks_index = LUA_NOREF;
LS->dec_hooks_index = LUA_NOREF;
LS->state = &LS->local;
pb_init(&LS->local);
pb_initbuffer(&LS->buffer);
luaL_setmetatable(L, PB_STATE);
lua_rawsetp(L, LUA_REGISTRYINDEX, state_name);
}
return LS;
}
static int Lpb_state(lua_State *L) {
int top = lua_gettop(L);
lpb_lstate(L);
lua_rawgetp(L, LUA_REGISTRYINDEX, state_name);
if (top != 0) {
if (lua_isnil(L, 1))
lua_pushnil(L);
else {
luaL_checkudata(L, 1, PB_STATE);
lua_pushvalue(L, 1);
}
lua_rawsetp(L, LUA_REGISTRYINDEX, state_name);
}
return 1;
}
/* protobuf util routines */
static void lpb_addlength(lua_State *L, pb_Buffer *b, size_t len)
{ if (pb_addlength(b, len) == 0) luaL_error(L, "encode bytes fail"); }
static int typeerror(lua_State *L, int idx, const char *type) {
lua_pushfstring(L, "%s expected, got %s", type, luaL_typename(L, idx));
return luaL_argerror(L, idx, lua_tostring(L, -1));
}
static lua_Integer posrelat(lua_Integer pos, size_t len) {
if (pos >= 0) return pos;
else if (0u - (size_t)pos > len) return 0;
else return (lua_Integer)len + pos + 1;
}
static lua_Integer rangerelat(lua_State *L, int idx, lua_Integer r[2], size_t len) {
r[0] = posrelat(luaL_optinteger(L, idx, 1), len);
r[1] = posrelat(luaL_optinteger(L, idx+1, len), len);
if (r[0] < 1) r[0] = 1;
if (r[1] > (lua_Integer)len) r[1] = len;
return r[0] <= r[1] ? r[1] - r[0] + 1 : 0;
}
static int argcheck(lua_State *L, int cond, int idx, const char *fmt, ...) {
if (!cond) {
va_list l;
va_start(l, fmt);
lua_pushvfstring(L, fmt, l);
va_end(l);
return luaL_argerror(L, idx, lua_tostring(L, -1));
}
return 1;
}
static pb_Slice lpb_toslice(lua_State *L, int idx) {
int type = lua_type(L, idx);
if (type == LUA_TSTRING) {
size_t len;
const char *s = lua_tolstring(L, idx, &len);
return pb_lslice(s, len);
} else if (type == LUA_TUSERDATA) {
pb_Buffer *buffer;
pb_Slice *s;
if ((buffer = test_buffer(L, idx)) != NULL)
return pb_result(buffer);
else if ((s = test_slice(L, idx)) != NULL)
return *s;
}
return pb_slice(NULL);
}
LUALIB_API pb_Slice lpb_checkslice(lua_State *L, int idx) {
pb_Slice ret = lpb_toslice(L, idx);
if (ret.p == NULL) typeerror(L, idx, "string/buffer/slice");
return ret;
}
static void lpb_readbytes(lua_State *L, pb_Slice *s, pb_Slice *pv) {
uint64_t len = 0;
if (pb_readvarint64(s, &len) == 0 || len > PB_MAX_SIZET)
luaL_error(L, "invalid bytes length: %d (at offset %d)",
(int)len, pb_pos(*s)+1);
if (pb_readslice(s, (size_t)len, pv) == 0 && len != 0)
luaL_error(L, "unfinished bytes (len %d at offset %d)",
(int)len, pb_pos(*s)+1);
}
static int lpb_hexchar(char ch) {
switch (ch) {
case '0': return 0;
case '1': return 1; case '2': return 2; case '3': return 3;
case '4': return 4; case '5': return 5; case '6': return 6;
case '7': return 7; case '8': return 8; case '9': return 9;
case 'a': case 'A': return 10; case 'b': case 'B': return 11;
case 'c': case 'C': return 12; case 'd': case 'D': return 13;
case 'e': case 'E': return 14; case 'f': case 'F': return 15;
}
return -1;
}
static uint64_t lpb_tointegerx(lua_State *L, int idx, int *isint) {
int neg = 0;
const char *s, *os;
#if LUA_VERSION_NUM >= 503
uint64_t v = (uint64_t)lua_tointegerx(L, idx, isint);
if (*isint) return v;
#else
uint64_t v = 0;
lua_Number nv = lua_tonumberx(L, idx, isint);
if (*isint) {
if (nv < (lua_Number)INT64_MIN || nv > (lua_Number)INT64_MAX)
luaL_error(L, "number has no integer representation");
return (uint64_t)(int64_t)nv;
}
#endif
if ((os = s = lua_tostring(L, idx)) == NULL) return 0;
while (*s == '#' || *s == '+' || *s == '-')
neg = (*s == '-') ^ neg, ++s;
if (s[0] == '0' && (s[1] == 'x' || s[1] == 'X')) {
for (s += 2; *s != '\0'; ++s) {
int n = lpb_hexchar(*s);
if (n < 0) break;
v = v << 4 | n;
}
} else {
for (; *s != '\0'; ++s) {
int n = lpb_hexchar(*s);
if (n < 0 || n > 10) break;
v = v * 10 + n;
}
}
if (!(*isint = *s == '\0')) return 0;
return neg ? ~v + 1 : v;
}
static uint64_t lpb_checkinteger(lua_State *L, int idx) {
int isint;
uint64_t v = lpb_tointegerx(L, idx, &isint);
if (!isint) {
if (lua_type(L, idx) == LUA_TSTRING)
luaL_error(L, "integer format error: '%s'", lua_tostring(L, idx));
typeerror(L, idx, "number/string");
}
return v;
}
static void lpb_pushinteger(lua_State *L, int64_t n, int u, int mode) {
if (mode != LPB_NUMBER && ((u && n < 0) || n < INT_MIN || n > UINT_MAX)) {
char buff[32], *p = buff + sizeof(buff) - 1;
int neg = !u && n < 0;
uint64_t un = !u && neg ? ~(uint64_t)n + 1 : (uint64_t)n;
if (mode == LPB_STRING) {
for (*p = '\0'; un > 0; un /= 10)
*--p = "0123456789"[un % 10];
} else if (mode == LPB_HEXSTRING) {
for (*p = '\0'; un > 0; un >>= 4)
*--p = "0123456789ABCDEF"[un & 0xF];
*--p = 'x', *--p = '0';
}
if (neg) *--p = '-';
*--p = '#';
lua_pushstring(L, p);
} else if (LUA_VERSION_NUM >= 503 && sizeof(lua_Integer) >= 8)
lua_pushinteger(L, (lua_Integer)n);
else
lua_pushnumber(L, (lua_Number)n);
}
typedef union lpb_Value {
pb_Slice s[1];
uint32_t u32;
uint64_t u64;
lua_Integer lint;
lua_Number lnum;
} lpb_Value;
static int lpb_addtype(lua_State *L, pb_Buffer *b, int idx, int type, size_t *plen) {
int ret = 0, expected = LUA_TNUMBER;
lpb_Value v;
size_t len = 0;
switch (type) {
case PB_Tbool:
len = pb_addvarint32(b, ret = lua_toboolean(L, idx));
if (ret) len = 0;
ret = 1;
break;
case PB_Tdouble:
v.lnum = lua_tonumberx(L, idx, &ret);
if (ret) len = pb_addfixed64(b, pb_encode_double((double)v.lnum));
if (v.lnum != 0.0) len = 0;
break;
case PB_Tfloat:
v.lnum = lua_tonumberx(L, idx, &ret);
if (ret) len = pb_addfixed32(b, pb_encode_float((float)v.lnum));
if (v.lnum != 0.0) len = 0;
break;
case PB_Tfixed32:
v.u64 = lpb_tointegerx(L, idx, &ret);
if (ret) len = pb_addfixed32(b, v.u32);
if (v.u64 != 0) len = 0;
break;
case PB_Tsfixed32:
v.u64 = lpb_tointegerx(L, idx, &ret);
if (ret) len = pb_addfixed32(b, v.u32);
if (v.u64 != 0) len = 0;
break;
case PB_Tint32:
v.u64 = lpb_tointegerx(L, idx, &ret);
if (ret) len = pb_addvarint64(b, pb_expandsig((uint32_t)v.u64));
if (v.u64 != 0) len = 0;
break;
case PB_Tuint32:
v.u64 = lpb_tointegerx(L, idx, &ret);
if (ret) len = pb_addvarint32(b, v.u32);
if (v.u64 != 0) len = 0;
break;
case PB_Tsint32:
v.u64 = lpb_tointegerx(L, idx, &ret);
if (ret) len = pb_addvarint32(b, pb_encode_sint32(v.u32));
if (v.u64 != 0) len = 0;
break;
case PB_Tfixed64:
v.u64 = lpb_tointegerx(L, idx, &ret);
if (ret) len = pb_addfixed64(b, v.u64);
if (v.u64 != 0) len = 0;
break;
case PB_Tsfixed64:
v.u64 = lpb_tointegerx(L, idx, &ret);
if (ret) len = pb_addfixed64(b, v.u64);
if (v.u64 != 0) len = 0;
break;
case PB_Tint64: case PB_Tuint64:
v.u64 = lpb_tointegerx(L, idx, &ret);
if (ret) len = pb_addvarint64(b, v.u64);
if (v.u64 != 0) len = 0;
break;
case PB_Tsint64:
v.u64 = lpb_tointegerx(L, idx, &ret);
if (ret) len = pb_addvarint64(b, pb_encode_sint64(v.u64));
if (v.u64 != 0) len = 0;
break;
case PB_Tbytes: case PB_Tstring:
*v.s = lpb_toslice(L, idx);
if ((ret = (v.s->p != NULL))) len = pb_addbytes(b, *v.s);
if (pb_len(*v.s) != 0) len = 0;
expected = LUA_TSTRING;
break;
default:
lua_pushfstring(L, "unknown type %s", pb_typename(type, "<unknown>"));
if (idx > 0) argcheck(L, 0, idx, lua_tostring(L, -1));
lua_error(L);
}
if (plen) *plen = len;
return ret ? 0 : expected;
}
static void lpb_readtype(lua_State *L, lpb_State *LS, int type, pb_Slice *s) {
lpb_Value v;
switch (type) {
#define pushinteger(n,u) lpb_pushinteger((L), (n), (u), LS->int64_mode)
case PB_Tbool: case PB_Tenum:
case PB_Tint32: case PB_Tuint32: case PB_Tsint32:
case PB_Tint64: case PB_Tuint64: case PB_Tsint64:
if (pb_readvarint64(s, &v.u64) == 0)
luaL_error(L, "invalid varint value at offset %d", pb_pos(*s)+1);
switch (type) {
case PB_Tbool: lua_pushboolean(L, v.u64 != 0); break;
/*case PB_Tenum: pushinteger(v.u64); break; [> NOT REACHED <]*/
case PB_Tint32: pushinteger((int32_t)v.u64, 0); break;
case PB_Tuint32: pushinteger((uint32_t)v.u64, 1); break;
case PB_Tsint32: pushinteger(pb_decode_sint32((uint32_t)v.u64), 0); break;
case PB_Tint64: pushinteger((int64_t)v.u64, 0); break;
case PB_Tuint64: pushinteger((uint64_t)v.u64, 1); break;
case PB_Tsint64: pushinteger(pb_decode_sint64(v.u64), 0); break;
}
break;
case PB_Tfloat:
case PB_Tfixed32:
case PB_Tsfixed32:
if (pb_readfixed32(s, &v.u32) == 0)
luaL_error(L, "invalid fixed32 value at offset %d", pb_pos(*s)+1);
switch (type) {
case PB_Tfloat: lua_pushnumber(L, pb_decode_float(v.u32)); break;
case PB_Tfixed32: pushinteger(v.u32, 1); break;
case PB_Tsfixed32: pushinteger((int32_t)v.u32, 0); break;
}
break;
case PB_Tdouble:
case PB_Tfixed64:
case PB_Tsfixed64:
if (pb_readfixed64(s, &v.u64) == 0)
luaL_error(L, "invalid fixed64 value at offset %d", pb_pos(*s)+1);
switch (type) {
case PB_Tdouble: lua_pushnumber(L, pb_decode_double(v.u64)); break;
case PB_Tfixed64: pushinteger(v.u64, 1); break;
case PB_Tsfixed64: pushinteger((int64_t)v.u64, 0); break;
}
break;
case PB_Tbytes:
case PB_Tstring:
case PB_Tmessage:
lpb_readbytes(L, s, v.s);
push_slice(L, *v.s);
break;
default:
luaL_error(L, "unknown type %s (%d)", pb_typename(type, NULL), type);
}
}
/* io routines */
#ifdef _WIN32
# include <io.h>
# include <fcntl.h>
#else
# define setmode(a,b) ((void)0)
#endif
static int io_read(lua_State *L) {
FILE *fp = (FILE*)lua_touserdata(L, 1);
size_t nr;
luaL_Buffer b;
luaL_buffinit(L, &b);
do { /* read file in chunks of LUAL_BUFFERSIZE bytes */
char *p = luaL_prepbuffer(&b);
nr = fread(p, sizeof(char), LUAL_BUFFERSIZE, fp);
luaL_addsize(&b, nr);
} while (nr == LUAL_BUFFERSIZE);
luaL_pushresult(&b); /* close buffer */
return 1;
}
static int io_write(lua_State *L, FILE *f, int idx) {
int nargs = lua_gettop(L) - idx + 1;
int status = 1;
for (; nargs--; idx++) {
pb_Slice s = lpb_checkslice(L, idx);
size_t l = pb_len(s);
status = status && (fwrite(s.p, sizeof(char), l, f) == l);
}
return status ? 1 : luaL_fileresult(L, 0, NULL);
}
static int Lio_read(lua_State *L) {
const char *fname = luaL_optstring(L, 1, NULL);
FILE *fp = stdin;
int ret;
if (fname == NULL)
(void)setmode(fileno(stdin), O_BINARY);
else if ((fp = fopen(fname, "rb")) == NULL)
return luaL_fileresult(L, 0, fname);
lua_pushcfunction(L, io_read);
lua_pushlightuserdata(L, fp);
ret = lua_pcall(L, 1, 1, 0);
if (fp != stdin) fclose(fp);
else (void)setmode(fileno(stdin), O_TEXT);
if (ret != LUA_OK) { lua_pushnil(L); lua_insert(L, -2); return 2; }
return 1;
}
static int Lio_write(lua_State *L) {
int res;
(void)setmode(fileno(stdout), O_BINARY);
res = io_write(L, stdout, 1);
fflush(stdout);
(void)setmode(fileno(stdout), O_TEXT);
return res;
}
static int Lio_dump(lua_State *L) {
int res;
const char *fname = luaL_checkstring(L, 1);
FILE *fp = fopen(fname, "wb");
if (fp == NULL) return luaL_fileresult(L, 0, fname);
res = io_write(L, fp, 2);
fclose(fp);
return res;
}
LUALIB_API int luaopen_pb_io(lua_State *L) {
luaL_Reg libs[] = {
#define ENTRY(name) { #name, Lio_##name }
ENTRY(read),
ENTRY(write),
ENTRY(dump),
#undef ENTRY
{ NULL, NULL }
};
luaL_newlib(L, libs);
return 1;
}
/* protobuf integer conversion */
static int Lconv_encode_int32(lua_State *L) {
uint64_t v = pb_expandsig((int32_t)lpb_checkinteger(L, 1));
return lpb_pushinteger(L, v, 1, lpb_lstate(L)->int64_mode), 1;
}
static int Lconv_encode_uint32(lua_State *L) {
return lpb_pushinteger(L, (uint32_t)lpb_checkinteger(L, 1),
1, lpb_lstate(L)->int64_mode), 1;
}
static int Lconv_encode_sint32(lua_State *L) {
return lpb_pushinteger(L, pb_encode_sint32((int32_t)lpb_checkinteger(L, 1)),
1, lpb_lstate(L)->int64_mode), 1;
}
static int Lconv_decode_sint32(lua_State *L) {
return lpb_pushinteger(L, pb_decode_sint32((uint32_t)lpb_checkinteger(L, 1)),
0, lpb_lstate(L)->int64_mode), 1;
}
static int Lconv_encode_sint64(lua_State *L) {
return lpb_pushinteger(L, pb_encode_sint64(lpb_checkinteger(L, 1)),
1, lpb_lstate(L)->int64_mode), 1;
}
static int Lconv_decode_sint64(lua_State *L) {
return lpb_pushinteger(L, pb_decode_sint64(lpb_checkinteger(L, 1)),
0, lpb_lstate(L)->int64_mode), 1;
}
static int Lconv_encode_float(lua_State *L) {
return lpb_pushinteger(L, pb_encode_float((float)luaL_checknumber(L, 1)),
1, lpb_lstate(L)->int64_mode), 1;
}
static int Lconv_decode_float(lua_State *L) {
return lua_pushnumber(L,
pb_decode_float((uint32_t)lpb_checkinteger(L, 1))), 1;
}
static int Lconv_encode_double(lua_State *L) {
return lpb_pushinteger(L, pb_encode_double(luaL_checknumber(L, 1)),
1, lpb_lstate(L)->int64_mode), 1;
}
static int Lconv_decode_double(lua_State *L) {
return lua_pushnumber(L, pb_decode_double(lpb_checkinteger(L, 1))), 1;
}
LUALIB_API int luaopen_pb_conv(lua_State *L) {
luaL_Reg libs[] = {
{ "decode_uint32", Lconv_encode_uint32 },
{ "decode_int32", Lconv_encode_int32 },
#define ENTRY(name) { #name, Lconv_##name }
ENTRY(encode_int32),
ENTRY(encode_uint32),
ENTRY(encode_sint32),
ENTRY(encode_sint64),
ENTRY(decode_sint32),
ENTRY(decode_sint64),
ENTRY(decode_float),
ENTRY(decode_double),
ENTRY(encode_float),
ENTRY(encode_double),
#undef ENTRY
{ NULL, NULL }
};
luaL_newlib(L, libs);
return 1;
}
/* protobuf encode routine */
static int lpb_typefmt(int fmt) {
switch (fmt) {
#define X(name,type,fmt) case fmt: return PB_T##name;
PB_TYPES(X)
#undef X
}
return -1;
}
static int lpb_packfmt(lua_State *L, int idx, pb_Buffer *b, const char **pfmt, int level) {
const char *fmt = *pfmt;
int type, ltype;
size_t len;
argcheck(L, level <= 100, 1, "format level overflow");
for (; *fmt != '\0'; ++fmt) {
switch (*fmt) {
case 'v': pb_addvarint64(b, (uint64_t)lpb_checkinteger(L, idx++)); break;
case 'd': pb_addfixed32(b, (uint32_t)lpb_checkinteger(L, idx++)); break;
case 'q': pb_addfixed64(b, (uint64_t)lpb_checkinteger(L, idx++)); break;
case 'c': pb_addslice(b, lpb_checkslice(L, idx++)); break;
case 's': pb_addbytes(b, lpb_checkslice(L, idx++)); break;
case '#': lpb_addlength(L, b, (size_t)lpb_checkinteger(L, idx++)); break;
case '(':
len = pb_bufflen(b);
++fmt;
idx = lpb_packfmt(L, idx, b, &fmt, level+1);
lpb_addlength(L, b, len);
break;
case ')':
if (level == 0) luaL_argerror(L, 1, "unexpected ')' in format");
*pfmt = fmt;
return idx;
case '\0':
default:
argcheck(L, (type = lpb_typefmt(*fmt)) >= 0,
1, "invalid formater: '%c'", *fmt);
ltype = lpb_addtype(L, b, idx, type, NULL);
argcheck(L, ltype == 0, idx, "%s expected for type '%s', got %s",
lua_typename(L, ltype), pb_typename(type, "<unknown>"),
luaL_typename(L, idx));
++idx;
}
}
if (level != 0) luaL_argerror(L, 2, "unmatch '(' in format");
*pfmt = fmt;
return idx;
}
static int Lpb_tohex(lua_State *L) {
pb_Slice s = lpb_checkslice(L, 1);
const char *hexa = "0123456789ABCDEF";
char hex[4] = "XX ";
lua_Integer r[2] = { 1, -1 };
luaL_Buffer lb;
rangerelat(L, 2, r, pb_len(s));
luaL_buffinit(L, &lb);
for (; r[0] <= r[1]; ++r[0]) {
unsigned int ch = s.p[r[0]-1];
hex[0] = hexa[(ch>>4)&0xF];
hex[1] = hexa[(ch )&0xF];
if (r[0] == r[1]) hex[2] = '\0';
luaL_addstring(&lb, hex);
}
luaL_pushresult(&lb);
return 1;
}
static int Lpb_fromhex(lua_State *L) {
pb_Slice s = lpb_checkslice(L, 1);
lua_Integer r[2] = { 1, -1 };
luaL_Buffer lb;
int curr = 0, idx = 0, num;
rangerelat(L, 2, r, pb_len(s));
luaL_buffinit(L, &lb);
for (; r[0] <= r[1]; ++r[0]) {
switch (num = s.p[r[0]-1]) {
case '0': case '1': case '2': case '3':
case '4': case '5': case '6': case '7':
case '8': case '9': num -= '0'; break;
case 'A': case 'a': num = 10; break;
case 'B': case 'b': num = 11; break;
case 'C': case 'c': num = 12; break;
case 'D': case 'd': num = 13; break;
case 'E': case 'e': num = 14; break;
case 'F': case 'f': num = 15; break;
default: continue;
}
curr = curr<<4 | num;
if (++idx % 2 == 0) luaL_addchar(&lb, curr), curr = 0;
}
luaL_pushresult(&lb);
return 1;
}
static int Lpb_result(lua_State *L) {
pb_Slice s = lpb_checkslice(L, 1);
lua_Integer r[2] = {1, -1}, range = rangerelat(L, 2, r, pb_len(s));
lua_pushlstring(L, s.p+r[0]-1, (size_t)range);
return 1;
}
static int Lbuf_new(lua_State *L) {
int i, top = lua_gettop(L);
pb_Buffer *buf = (pb_Buffer*)lua_newuserdata(L, sizeof(pb_Buffer));
pb_initbuffer(buf);
luaL_setmetatable(L, PB_BUFFER);
for (i = 1; i <= top; ++i)
pb_addslice(buf, lpb_checkslice(L, i));
return 1;
}
static int Lbuf_delete(lua_State *L) {
pb_Buffer *buf = test_buffer(L, 1);
if (buf) pb_resetbuffer(buf);
return 0;
}
static int Lbuf_libcall(lua_State *L) {
int i, top = lua_gettop(L);
pb_Buffer *buf = (pb_Buffer*)lua_newuserdata(L, sizeof(pb_Buffer));
pb_initbuffer(buf);
luaL_setmetatable(L, PB_BUFFER);
for (i = 2; i <= top; ++i)
pb_addslice(buf, lpb_checkslice(L, i));
return 1;
}
static int Lbuf_tostring(lua_State *L) {
pb_Buffer *buf = check_buffer(L, 1);
lua_pushfstring(L, "pb.Buffer: %p", buf);
return 1;
}
static int Lbuf_reset(lua_State *L) {
pb_Buffer *buf = check_buffer(L, 1);
int i, top = lua_gettop(L);
pb_bufflen(buf) = 0;
for (i = 2; i <= top; ++i)
pb_addslice(buf, lpb_checkslice(L, i));
return_self(L);
}
static int Lbuf_len(lua_State *L) {
pb_Buffer *buf = check_buffer(L, 1);
lua_pushinteger(L, (lua_Integer)buf->size);
return 1;
}
static int Lbuf_pack(lua_State *L) {
pb_Buffer b, *pb = test_buffer(L, 1);
int idx = 1 + (pb != NULL);
const char *fmt = luaL_checkstring(L, idx++);
if (pb == NULL) pb_initbuffer(pb = &b);
lpb_packfmt(L, idx, pb, &fmt, 0);
if (pb != &b)
lua_settop(L, 1);
else {
pb_Slice ret = pb_result(pb);
push_slice(L, ret);
pb_resetbuffer(pb);
}
return 1;
}
LUALIB_API int luaopen_pb_buffer(lua_State *L) {
luaL_Reg libs[] = {
{ "__tostring", Lbuf_tostring },
{ "__len", Lbuf_len },
{ "__gc", Lbuf_delete },
{ "delete", Lbuf_delete },
{ "tohex", Lpb_tohex },
{ "fromhex", Lpb_fromhex },
{ "result", Lpb_result },
#define ENTRY(name) { #name, Lbuf_##name }
ENTRY(new),
ENTRY(reset),
ENTRY(pack),
#undef ENTRY
{ NULL, NULL }
};
if (luaL_newmetatable(L, PB_BUFFER)) {
luaL_setfuncs(L, libs, 0);
lua_pushvalue(L, -1);
lua_setfield(L, -2, "__index");
lua_createtable(L, 0, 1);
lua_pushcfunction(L, Lbuf_libcall);
lua_setfield(L, -2, "__call");
lua_setmetatable(L, -2);
}
return 1;
}
/* protobuf decode routine */
#define LPB_INITSTACKLEN 2
typedef struct lpb_Slice {
pb_Slice curr;
pb_Slice *buff;
size_t used;
size_t size;
pb_Slice init_buff[LPB_INITSTACKLEN];
} lpb_Slice;
static void lpb_resetslice(lua_State *L, lpb_Slice *s, size_t size) {
if (size == sizeof(lpb_Slice)) {
if (s->buff != s->init_buff) free(s->buff);
memset(s, 0, sizeof(lpb_Slice));
s->buff = s->init_buff;
s->size = LPB_INITSTACKLEN;
}
lua_pushnil(L);
lua_rawsetp(L, LUA_REGISTRYINDEX, s);
}
static pb_Slice lpb_checkview(lua_State *L, int idx, pb_Slice *ps) {
pb_Slice src = lpb_checkslice(L, idx);
lua_Integer r[2] = {1, -1}, range = rangerelat(L, idx+1, r, pb_len(src));
pb_Slice ret;
if (ps) *ps = src, ps->start = src.p;
ret.p = src.p + r[0] - 1;
ret.end = ret.p + range;
ret.start = src.p;
return ret;
}
static void lpb_enterview(lua_State *L, lpb_Slice *s, pb_Slice view) {
if (s->used >= s->size) {
size_t newsize = s->size * 2;
pb_Slice *oldp = s->buff != s->init_buff ? s->buff : NULL;
pb_Slice *newp = (pb_Slice*)realloc(oldp, newsize*sizeof(pb_Slice));
if (newp == NULL) { luaL_error(L, "out of memory"); return; }
if (oldp == NULL) memcpy(newp, s->buff, s->used*sizeof(pb_Slice));
s->buff = newp;
s->size = newsize;
}
s->buff[s->used++] = s->curr;
s->curr = view;
}
static void lpb_initslice(lua_State *L, int idx, lpb_Slice *s, size_t size) {
if (size == sizeof(lpb_Slice)) {
memset(s, 0, sizeof(lpb_Slice));
s->buff = s->init_buff;
s->size = LPB_INITSTACKLEN;
}
if (!lua_isnoneornil(L, idx)) {
pb_Slice base, view = lpb_checkview(L, idx, &base);
s->curr = base;
if (size == sizeof(lpb_Slice)) lpb_enterview(L, s, view);
lua_pushvalue(L, idx);
lua_rawsetp(L, LUA_REGISTRYINDEX, s);
}
}
static int lpb_unpackscalar(lua_State *L, int *pidx, int top, int fmt, pb_Slice *s) {
unsigned mode = lpb_lstate(L)->int64_mode;
lpb_Value v;
switch (fmt) {
case 'v':
if (pb_readvarint64(s, &v.u64) == 0) return luaL_error(L,
"invalid varint value at offset %d", pb_pos(*s)+1);
lpb_pushinteger(L, v.u64, 1, mode);
break;
case 'd':
if (pb_readfixed32(s, &v.u32) == 0) return luaL_error(L,
"invalid fixed32 value at offset %d", pb_pos(*s)+1);
lpb_pushinteger(L, v.u32, 1, mode);
break;
case 'q':
if (pb_readfixed64(s, &v.u64) == 0) return luaL_error(L,
"invalid fixed64 value at offset %d", pb_pos(*s)+1);
lpb_pushinteger(L, v.u64, 1, mode);
break;
case 's':
if (pb_readbytes(s, v.s) == 0) return luaL_error(L,
"invalid bytes value at offset %d", pb_pos(*s)+1);
push_slice(L, *v.s);
break;
case 'c':
argcheck(L, *pidx <= top, 1, "format argument exceed");
v.lint = luaL_checkinteger(L, (*pidx)++);
if (pb_readslice(s, (size_t)v.lint, v.s) == 0) return luaL_error(L,
"invalid sub string at offset %d", pb_pos(*s)+1);
push_slice(L, *v.s);
break;
default:
return 0;
}
return 1;
}
static int lpb_unpackloc(lua_State *L, int *pidx, int top, int fmt, pb_Slice *s, int *prets) {
lua_Integer li;
size_t len = s->end - s->start;
switch (fmt) {
case '@':
lua_pushinteger(L, pb_pos(*s)+1);
++*prets;
break;
case '*': case '+':
argcheck(L, *pidx <= top, 1, "format argument exceed");
if (fmt == '*')
li = posrelat(luaL_checkinteger(L, (*pidx)++), len);
else
li = pb_pos(*s) + luaL_checkinteger(L, (*pidx)++) + 1;
if (li == 0) li = 1;
if (li > (lua_Integer)len) li = (lua_Integer)len + 1;
s->p = s->start + li - 1;
break;
default:
return 0;
}
return 1;
}
static int lpb_unpackfmt(lua_State *L, int idx, const char *fmt, pb_Slice *s) {
int rets = 0, top = lua_gettop(L), type;
for (; *fmt != '\0'; ++fmt) {
if (lpb_unpackloc(L, &idx, top, *fmt, s, &rets))
continue;
if (s->p >= s->end) return lua_pushnil(L), rets + 1;
luaL_checkstack(L, 1, "too many values");
if (!lpb_unpackscalar(L, &idx, top, *fmt, s)) {
argcheck(L, (type = lpb_typefmt(*fmt)) >= 0,
1, "invalid formater: '%c'", *fmt);
lpb_readtype(L, lpb_lstate(L), type, s);
}
++rets;
}
return rets;
}
static lpb_Slice *check_lslice(lua_State *L, int idx) {
pb_Slice *s = check_slice(L, idx);
argcheck(L, lua_rawlen(L, 1) == sizeof(lpb_Slice),
idx, "unsupport operation for raw mode slice");
return (lpb_Slice*)s;
}
static int Lslice_new(lua_State *L) {
lpb_Slice *s;
lua_settop(L, 3);
s = (lpb_Slice*)lua_newuserdata(L, sizeof(lpb_Slice));
lpb_initslice(L, 1, s, sizeof(lpb_Slice));
if (s->curr.p == NULL) s->curr = pb_lslice("", 0);
luaL_setmetatable(L, PB_SLICE);
return 1;
}
static int Lslice_libcall(lua_State *L) {
lpb_Slice *s;
lua_settop(L, 4);
s = (lpb_Slice*)lua_newuserdata(L, sizeof(lpb_Slice));
lpb_initslice(L, 2, s, sizeof(lpb_Slice));
luaL_setmetatable(L, PB_SLICE);
return 1;
}
static int Lslice_reset(lua_State *L) {
lpb_Slice *s = (lpb_Slice*)check_slice(L, 1);
size_t size = lua_rawlen(L, 1);
lpb_resetslice(L, s, size);
if (!lua_isnoneornil(L, 2))
lpb_initslice(L, 2, s, size);
return_self(L);
}
static int Lslice_tostring(lua_State *L) {
pb_Slice *s = check_slice(L, 1);
lua_pushfstring(L, "pb.Slice: %p%s", s,
lua_rawlen(L, 1) == sizeof(lpb_Slice) ? "" : " (raw)");
return 1;
}
static int Lslice_len(lua_State *L) {
pb_Slice *s = check_slice(L, 1);
lua_pushinteger(L, (lua_Integer)pb_len(*s));
lua_pushinteger(L, (lua_Integer)pb_pos(*s)+1);
return 2;
}
static int Lslice_unpack(lua_State *L) {
pb_Slice view, *s = test_slice(L, 1);
const char *fmt = luaL_checkstring(L, 2);
if (s == NULL) view = lpb_checkslice(L, 1), s = &view;
return lpb_unpackfmt(L, 3, fmt, s);
}
static int Lslice_level(lua_State *L) {
lpb_Slice *s = check_lslice(L, 1);
if (!lua_isnoneornil(L, 2)) {
pb_Slice *se;
lua_Integer level = posrelat(luaL_checkinteger(L, 2), s->used);
if (level > (lua_Integer)s->used)
return 0;
else if (level == (lua_Integer)s->used)
se = &s->curr;
else
se = &s->buff[level];
lua_pushinteger(L, (lua_Integer)(se->p - s->buff[0].start) + 1);
lua_pushinteger(L, (lua_Integer)(se->start - s->buff[0].start) + 1);
lua_pushinteger(L, (lua_Integer)(se->end - s->buff[0].start));
return 3;
}
lua_pushinteger(L, s->used);
return 1;
}
static int Lslice_enter(lua_State *L) {
lpb_Slice *s = check_lslice(L, 1);
pb_Slice view;
if (lua_isnoneornil(L, 2)) {
argcheck(L, pb_readbytes(&s->curr, &view) != 0,
1, "bytes wireformat expected at offset %d", pb_pos(s->curr)+1);
view.start = view.p;
lpb_enterview(L, s, view);
} else {
lua_Integer r[] = {1, -1};
lua_Integer range = rangerelat(L, 2, r, pb_len(s->curr));
view.p = s->curr.start + r[0] - 1;
view.end = view.p + range;
view.start = s->curr.p;
lpb_enterview(L, s, view);
}
return_self(L);
}
static int Lslice_leave(lua_State *L) {
lpb_Slice *s = check_lslice(L, 1);
lua_Integer count = posrelat(luaL_optinteger(L, 2, 1), s->used);
if (count > (lua_Integer)s->used)
argcheck(L, 0, 2, "level (%d) exceed max level %d",
(int)count, (int)s->used);
else if (count == (lua_Integer)s->used) {
s->curr = s->buff[0];
s->used = 1;
} else {
s->used -= (size_t)count;
s->curr = s->buff[s->used];
}
lua_settop(L, 1);
lua_pushinteger(L, s->used);
return 2;
}
LUALIB_API int lpb_newslice(lua_State *L, const char *s, size_t len) {
pb_Slice *ls = (pb_Slice*)lua_newuserdata(L, sizeof(pb_Slice));
*ls = pb_lslice(s, len);
luaL_setmetatable(L, PB_SLICE);
return 1;
}
LUALIB_API int luaopen_pb_slice(lua_State *L) {
luaL_Reg libs[] = {
{ "__tostring", Lslice_tostring },
{ "__len", Lslice_len },
{ "__gc", Lslice_reset },
{ "delete", Lslice_reset },
{ "tohex", Lpb_tohex },
{ "fromhex", Lpb_fromhex },
{ "result", Lpb_result },
#define ENTRY(name) { #name, Lslice_##name }
ENTRY(new),
ENTRY(reset),
ENTRY(level),
ENTRY(enter),
ENTRY(leave),
ENTRY(unpack),
#undef ENTRY
{ NULL, NULL }
};
if (luaL_newmetatable(L, PB_SLICE)) {
luaL_setfuncs(L, libs, 0);
lua_pushvalue(L, -1);
lua_setfield(L, -2, "__index");
lua_createtable(L, 0, 1);
lua_pushcfunction(L, Lslice_libcall);
lua_setfield(L, -2, "__call");
lua_setmetatable(L, -2);
}
return 1;
}
/* high level typeinfo/encode/decode routines */
typedef enum {USE_FIELD = 1, USE_REPEAT = 2, USE_MESSAGE = 4} lpb_DefFlags;
static void lpb_pushtypetable(lua_State *L, lpb_State *LS, const pb_Type *t);
static void lpb_newmsgtable(lua_State *L, const pb_Type *t) {
int fieldcnt = t->field_count - t->oneof_field + t->oneof_count*2;
lua_createtable(L, 0, fieldcnt > 0 ? fieldcnt : 0);
}
LUALIB_API const pb_Type *lpb_type(lpb_State *LS, pb_Slice s) {
const pb_Type *t;
if (s.p == NULL || *s.p == '.')
t = pb_type(lpbS_state(LS), lpb_name(LS, s));
else {
pb_Buffer b;
pb_initbuffer(&b);
*pb_prepbuffsize(&b, 1) = '.';
pb_addsize(&b, 1);
pb_addslice(&b, s);
t = pb_type(lpbS_state(LS), pb_name(lpbS_state(LS),pb_result(&b),NULL));
pb_resetbuffer(&b);
}
return t;
}
static const pb_Field *lpb_field(lua_State *L, int idx, const pb_Type *t) {
lpb_State *LS = lpb_lstate(L);
int isint, number = (int)lua_tointegerx(L, idx, &isint);
if (isint) return pb_field(t, number);
return pb_fname(t, lpb_name(LS, lpb_checkslice(L, idx)));
}
static int Lpb_load(lua_State *L) {
lpb_State *LS = lpb_lstate(L);
pb_Slice s = lpb_checkslice(L, 1);
int r = pb_load(&LS->local, &s);
if (r == PB_OK) global_state = &LS->local;
lua_pushboolean(L, r == PB_OK);
lua_pushinteger(L, pb_pos(s)+1);
return 2;
}
static int Lpb_loadfile(lua_State *L) {
lpb_State *LS = lpb_lstate(L);
const char *filename = luaL_checkstring(L, 1);
size_t size;
pb_Buffer b;
pb_Slice s;
int ret;
FILE *fp = fopen(filename, "rb");
if (fp == NULL)
return luaL_fileresult(L, 0, filename);
pb_initbuffer(&b);
do {
char *d = pb_prepbuffsize(&b, BUFSIZ);
if (d == NULL) return fclose(fp), luaL_error(L, "out of memory");
size = fread(d, 1, BUFSIZ, fp);
pb_addsize(&b, size);
} while (size == BUFSIZ);
fclose(fp);
s = pb_result(&b);
ret = pb_load(&LS->local, &s);
if (ret == PB_OK) global_state = &LS->local;
pb_resetbuffer(&b);
lua_pushboolean(L, ret == PB_OK);
lua_pushinteger(L, pb_pos(s)+1);
return 2;
}
static int lpb_pushtype(lua_State *L, const pb_Type *t) {
if (t == NULL) return 0;
lua_pushstring(L, (const char*)t->name);
lua_pushstring(L, (const char*)t->basename);
lua_pushstring(L, t->is_map ? "map" : t->is_enum ? "enum" : "message");
return 3;
}
static int lpb_pushfield(lua_State *L, const pb_Type *t, const pb_Field *f) {
if (f == NULL) return 0;
lua_pushstring(L, (const char*)f->name);
lua_pushinteger(L, f->number);
lua_pushstring(L, f->type ?
(const char*)f->type->name :
pb_typename(f->type_id, "<unknown>"));
lua_pushstring(L, (const char*)f->default_value);
lua_pushstring(L, f->repeated ?
(f->packed ? "packed" : "repeated") :
"optional");
if (f->oneof_idx > 0) {
lua_pushstring(L, (const char*)pb_oneofname(t, f->oneof_idx));
lua_pushinteger(L, f->oneof_idx-1);
return 7;
}
return 5;
}
static int Lpb_typesiter(lua_State *L) {
lpb_State *LS = lpb_lstate(L);
const pb_Type *t = lpb_type(LS, lpb_toslice(L, 2));
if ((t == NULL && !lua_isnoneornil(L, 2)))
return 0;
pb_nexttype(lpbS_state(LS), &t);
return lpb_pushtype(L, t);
}
static int Lpb_types(lua_State *L) {
lua_pushcfunction(L, Lpb_typesiter);
lua_pushnil(L);
lua_pushnil(L);
return 3;
}
static int Lpb_fieldsiter(lua_State *L) {
lpb_State *LS = lpb_lstate(L);
const pb_Type *t = lpb_type(LS, lpb_checkslice(L, 1));
const pb_Field *f = pb_fname(t, lpb_name(LS, lpb_toslice(L, 2)));
if ((f == NULL && !lua_isnoneornil(L, 2)) || !pb_nextfield(t, &f))
return 0;
return lpb_pushfield(L, t, f);
}
static int Lpb_fields(lua_State *L) {
lua_pushcfunction(L, Lpb_fieldsiter);
lua_pushvalue(L, 1);
lua_pushnil(L);
return 3;
}
static int Lpb_type(lua_State *L) {
lpb_State *LS = lpb_lstate(L);
const pb_Type *t = lpb_type(LS, lpb_checkslice(L, 1));
if (t == NULL || t->is_dead)
return 0;
return lpb_pushtype(L, t);
}
static int Lpb_field(lua_State *L) {
lpb_State *LS = lpb_lstate(L);
const pb_Type *t = lpb_type(LS, lpb_checkslice(L, 1));
return lpb_pushfield(L, t, lpb_field(L, 2, t));
}
static int Lpb_enum(lua_State *L) {
lpb_State *LS = lpb_lstate(L);
const pb_Type *t = lpb_type(LS, lpb_checkslice(L, 1));
const pb_Field *f = lpb_field(L, 2, t);
if (f == NULL) return 0;
if (lua_type(L, 2) == LUA_TNUMBER)
lua_pushstring(L, (const char*)f->name);
else
lpb_pushinteger(L, f->number, 1, LS->int64_mode);
return 1;
}
static int lpb_pushdeffield(lua_State *L, lpb_State *LS, const pb_Field *f, int is_proto3) {
int ret = 0, u = 0;
const pb_Type *type;
char *end;
if (f == NULL) return 0;
switch (f->type_id) {
case PB_Tenum:
if ((type = f ? f->type : NULL) == NULL) return 0;
if ((f = pb_fname(type, f->default_value)) != NULL)
ret = LS->enum_as_value ?
(lpb_pushinteger(L, f->number, 1, LS->int64_mode), 1) :
(lua_pushstring(L, (const char*)f->name), 1);
else if (is_proto3)
ret = (f = pb_field(type, 0)) == NULL || LS->enum_as_value ?
(lua_pushinteger(L, 0), 1) :
(lua_pushstring(L, (const char*)f->name), 1);
break;
case PB_Tmessage:
ret = (lpb_pushtypetable(L, LS, f->type), 1);
break;
case PB_Tbytes: case PB_Tstring:
if (f->default_value)
ret = (lua_pushstring(L, (const char*)f->default_value), 1);
else if (is_proto3) ret = (lua_pushliteral(L, ""), 1);
break;
case PB_Tbool:
if (f->default_value) {
if (f->default_value == lpb_name(LS, pb_slice("true")))
ret = (lua_pushboolean(L, 1), 1);
else if (f->default_value == lpb_name(LS, pb_slice("false")))
ret = (lua_pushboolean(L, 0), 1);
} else if (is_proto3) ret = (lua_pushboolean(L, 0), 1);
break;
case PB_Tdouble: case PB_Tfloat:
if (f->default_value) {
lua_Number ln = (lua_Number)strtod((const char*)f->default_value, &end);
if ((const char*)f->default_value == end) return 0;
ret = (lua_pushnumber(L, ln), 1);
} else if (is_proto3) ret = (lua_pushnumber(L, 0.0), 1);
break;
case PB_Tuint64: case PB_Tfixed64: case PB_Tfixed32: case PB_Tuint32:
u = 1;
/* FALLTHROUGH */
default:
if (f->default_value) {
lua_Integer li = (lua_Integer)strtol((const char*)f->default_value, &end, 10);
if ((const char*)f->default_value == end) return 0;
ret = (lpb_pushinteger(L, li, u, LS->int64_mode), 1);
} else if (is_proto3) ret = (lua_pushinteger(L, 0), 1);
}
return ret;
}
static void lpb_setdeffields(lua_State *L, lpb_State *LS, const pb_Type *t, lpb_DefFlags flags) {
const pb_Field *f = NULL;
while (pb_nextfield(t, &f)) {
int has_field = f->repeated ?
(flags & USE_REPEAT) && (t->is_proto3 || LS->decode_default_array)
&& (lua_newtable(L), 1) :
!f->oneof_idx && (f->type_id != PB_Tmessage ?
(flags & USE_FIELD) :
(flags & USE_MESSAGE) && LS->decode_default_message)
&& lpb_pushdeffield(L, LS, f, t->is_proto3);
if (has_field) lua_setfield(L, -2, (const char*)f->name);
}
}
static void lpb_pushdefmeta(lua_State *L, lpb_State *LS, const pb_Type *t) {
lpb_pushdeftable(L, LS);
if (lua53_rawgetp(L, -1, t) != LUA_TTABLE) {
lua_pop(L, 1);
lpb_newmsgtable(L, t);
lpb_setdeffields(L, LS, t, USE_FIELD);
lua_pushvalue(L, -1);
lua_setfield(L, -2, "__index");
lua_pushvalue(L, -1);
lua_rawsetp(L, -3, t);
}
lua_remove(L, -2);
}
static void lpb_cleardefmeta(lua_State *L, lpb_State *LS, const pb_Type *t) {
lpb_pushdeftable(L, LS);
lua_pushnil(L);
lua_rawsetp(L, -2, t);
lua_pop(L, 1);
}
static int Lpb_defaults(lua_State *L) {
lpb_State *LS = lpb_lstate(L);
const pb_Type *t = lpb_type(LS, lpb_checkslice(L, 1));
int clear = lua_toboolean(L, 2);
if (t == NULL) luaL_argerror(L, 1, "type not found");
lpb_pushdefmeta(L, LS, t);
if (clear) lpb_cleardefmeta(L, LS, t);
return 1;
}
static int Lpb_hook(lua_State *L) {
lpb_State *LS = lpb_lstate(L);
const pb_Type *t = lpb_type(LS, lpb_checkslice(L, 1));
int type = lua_type(L, 2);
if (t == NULL) luaL_argerror(L, 1, "type not found");
if (type != LUA_TNONE && type != LUA_TNIL && type != LUA_TFUNCTION)
typeerror(L, 2, "function");
lua_settop(L, 2);
lpb_pushdechooktable(L, LS);
lua_rawgetp(L, 3, t);
if (type != LUA_TNONE) {
lua_pushvalue(L, 2);
lua_rawsetp(L, 3, t);
}
return 1;
}
static int Lpb_encode_hook(lua_State *L) {
lpb_State *LS = lpb_lstate(L);
const pb_Type *t = lpb_type(LS, lpb_checkslice(L, 1));
int type = lua_type(L, 2);
if (t == NULL) luaL_argerror(L, 1, "type not found");
if (type != LUA_TNONE && type != LUA_TNIL && type != LUA_TFUNCTION)
typeerror(L, 2, "function");
lua_settop(L, 2);
lpb_pushenchooktable(L, LS);
lua_rawgetp(L, 3, t);
if (type != LUA_TNONE) {
lua_pushvalue(L, 2);
lua_rawsetp(L, 3, t);
}
return 1;
}
static int Lpb_clear(lua_State *L) {
lpb_State *LS = lpb_lstate(L);
pb_State *S = (pb_State*)LS->state;
pb_Type *t;
if (lua_isnoneornil(L, 1)) {
pb_free(&LS->local), pb_init(&LS->local);
luaL_unref(L, LUA_REGISTRYINDEX, LS->defs_index);
LS->defs_index = LUA_NOREF;
luaL_unref(L, LUA_REGISTRYINDEX, LS->enc_hooks_index);
LS->enc_hooks_index = LUA_NOREF;
luaL_unref(L, LUA_REGISTRYINDEX, LS->dec_hooks_index);
LS->dec_hooks_index = LUA_NOREF;
return 0;
}
LS->state = &LS->local;
t = (pb_Type*)lpb_type(LS, lpb_checkslice(L, 1));
if (lua_isnoneornil(L, 2)) pb_deltype(&LS->local, t);
else pb_delfield(&LS->local, t, (pb_Field*)lpb_field(L, 2, t));
LS->state = S;
lpb_cleardefmeta(L, LS, t);
return 0;
}
static int Lpb_typefmt(lua_State *L) {
pb_Slice s = lpb_checkslice(L, 1);
const char *r = NULL;
char buf[2] = {0};
int type;
if (pb_len(s) == 1)
r = pb_typename(type = lpb_typefmt(*s.p), "!");
else if (lpb_type(lpb_lstate(L), s))
r = "message", type = PB_TBYTES;
else if ((type = pb_typebyname(s.p, PB_Tmessage)) != PB_Tmessage) {
switch (type) {
#define X(name,type,fmt) case PB_T##name: buf[0] = fmt, r = buf; break;
PB_TYPES(X)
#undef X
}
type = pb_wtypebytype(type);
} else if ((type = pb_wtypebyname(s.p, PB_Tmessage)) != PB_Tmessage) {
switch (type) {
#define X(id,name,fmt) case PB_T##id: buf[0] = fmt, r = buf; break;
PB_WIRETYPES(X)
#undef X
}
}
lua_pushstring(L, r ? r : "!");
lua_pushinteger(L, type);
return 2;
}
/* protobuf encode */
typedef struct lpb_Env {
lua_State *L;
lpb_State *LS;
pb_Buffer *b;
pb_Slice *s;
} lpb_Env;
static void lpbE_encode (lpb_Env *e, const pb_Type *t, int idx);
static void lpb_checktable(lua_State *L, const pb_Field *f, int idx) {
argcheck(L, lua_istable(L, idx),
2, "table expected at field '%s', got %s",
(const char*)f->name, luaL_typename(L, idx));
}
static void lpb_useenchooks(lua_State *L, lpb_State *LS, const pb_Type *t) {
lpb_pushenchooktable(L, LS);
if (lua53_rawgetp(L, -1, t) != LUA_TNIL) {
lua_pushvalue(L, -3);
lua_call(L, 1, 1);
if (!lua_isnil(L, -1)) {
lua_pushvalue(L, -1);
lua_replace(L, -4);
}
}
lua_pop(L, 2);
}
static void lpbE_enum(lpb_Env *e, const pb_Field *f, int idx) {
lua_State *L = e->L;
pb_Buffer *b = e->b;
const pb_Field *ev;
int type = lua_type(L, idx);
if (type == LUA_TNUMBER)
pb_addvarint64(b, (uint64_t)lua_tonumber(L, idx));
else if ((ev = pb_fname(f->type,
lpb_name(e->LS, lpb_toslice(L, idx)))) != NULL)
pb_addvarint32(b, ev->number);
else if (type != LUA_TSTRING)
argcheck(L, 0, 2, "number/string expected at field '%s', got %s",
(const char*)f->name, luaL_typename(L, idx));
else {
uint64_t v = lpb_tointegerx(L, idx, &type);
if (!type)
argcheck(L, 0, 2, "can not encode unknown enum '%s' at field '%s'",
lua_tostring(L, -1), (const char*)f->name);
pb_addvarint64(b, v);
}
}
static void lpbE_field(lpb_Env *e, const pb_Field *f, size_t *plen, int idx) {
lua_State *L = e->L;
pb_Buffer *b = e->b;
size_t len;
int ltype;
if (plen) *plen = 0;
switch (f->type_id) {
case PB_Tenum:
if (e->LS->use_enc_hooks) lpb_useenchooks(L, e->LS, f->type);
lpbE_enum(e, f, idx);
break;
case PB_Tmessage:
if (e->LS->use_enc_hooks) lpb_useenchooks(L, e->LS, f->type);
lpb_checktable(L, f, idx);
len = pb_bufflen(b);
lpbE_encode(e, f->type, idx);
lpb_addlength(L, b, len);
break;
default:
ltype = lpb_addtype(L, b, idx, f->type_id, plen);
argcheck(L, ltype == 0,
2, "%s expected for field '%s', got %s",
lua_typename(L, ltype),
(const char*)f->name, luaL_typename(L, idx));
}
}
static void lpbE_tagfield(lpb_Env *e, const pb_Field *f, int ignorezero, int idx) {
size_t hlen = pb_addvarint32(e->b,
pb_pair(f->number, pb_wtypebytype(f->type_id)));
size_t ignoredlen;
lpbE_field(e, f, &ignoredlen, idx);
if (!e->LS->encode_default_values && ignoredlen != 0 && ignorezero)
e->b->size -= (unsigned)(ignoredlen + hlen);
}
static void lpbE_map(lpb_Env *e, const pb_Field *f, int idx) {
lua_State *L = e->L;
const pb_Field *kf = pb_field(f->type, 1);
const pb_Field *vf = pb_field(f->type, 2);
if (kf == NULL || vf == NULL) return;
lpb_checktable(L, f, idx);
lua_pushnil(L);
while (lua_next(L, lpb_relindex(idx, 1))) {
size_t len;
pb_addvarint32(e->b, pb_pair(f->number, PB_TBYTES));
len = pb_bufflen(e->b);
lpbE_tagfield(e, kf, 1, -2);
lpbE_tagfield(e, vf, 1, -1);
lpb_addlength(L, e->b, len);
lua_pop(L, 1);
}
}
static void lpbE_repeated(lpb_Env *e, const pb_Field *f, int idx) {
lua_State *L = e->L;
pb_Buffer *b = e->b;
int i;
lpb_checktable(L, f, idx);
if (f->packed) {
unsigned len, bufflen = pb_bufflen(b);
pb_addvarint32(b, pb_pair(f->number, PB_TBYTES));
len = pb_bufflen(b);
for (i = 1; lua53_rawgeti(L, idx, i) != LUA_TNIL; ++i) {
lpbE_field(e, f, NULL, -1);
lua_pop(L, 1);
}
if (i == 1 && !e->LS->encode_default_values)
pb_bufflen(b) = bufflen;
else
lpb_addlength(L, b, len);
} else {
for (i = 1; lua53_rawgeti(L, idx, i) != LUA_TNIL; ++i) {
lpbE_tagfield(e, f, 0, -1);
lua_pop(L, 1);
}
}
lua_pop(L, 1);
}
static void lpb_encode_onefield(lpb_Env *e, const pb_Type *t, const pb_Field *f, int idx) {
if (f->type && f->type->is_map)
lpbE_map(e, f, idx);
else if (f->repeated)
lpbE_repeated(e, f, idx);
else if (!f->type || !f->type->is_dead)
lpbE_tagfield(e, f, t->is_proto3 && !f->oneof_idx, idx);
}
static void lpbE_encode(lpb_Env *e, const pb_Type *t, int idx) {
lua_State *L = e->L;
luaL_checkstack(L, 3, "message too many levels");
if (e->LS->encode_order) {
const pb_Field *f = NULL;
while (pb_nextfield(t, &f)) {
if (lua53_getfield(L, idx, (const char*)f->name) != LUA_TNIL)
lpb_encode_onefield(e, t, f, -1);
lua_pop(L, 1);
}
} else {
lua_pushnil(L);
while (lua_next(L, lpb_relindex(idx, 1))) {
if (lua_type(L, -2) == LUA_TSTRING) {
const pb_Field *f =
pb_fname(t, lpb_name(e->LS, lpb_toslice(L, -2)));
if (f != NULL) lpb_encode_onefield(e, t, f, -1);
}
lua_pop(L, 1);
}
}
}
static int Lpb_encode(lua_State *L) {
lpb_State *LS = lpb_lstate(L);
const pb_Type *t = lpb_type(LS, lpb_checkslice(L, 1));
lpb_Env e;
argcheck(L, t!=NULL, 1, "type '%s' does not exists", lua_tostring(L, 1));
luaL_checktype(L, 2, LUA_TTABLE);
e.L = L, e.LS = LS, e.b = test_buffer(L, 3);
if (e.b == NULL) pb_resetbuffer(e.b = &LS->buffer);
lua_pushvalue(L, 2);
if (e.LS->use_enc_hooks) lpb_useenchooks(L, e.LS, t);
lpbE_encode(&e, t, -1);
if (e.b != &LS->buffer)
lua_settop(L, 3);
else {
lua_pushlstring(L, pb_buffer(e.b), pb_bufflen(e.b));
pb_resetbuffer(e.b);
}
return 1;
}
static int lpbE_pack(lpb_Env* e, const pb_Type* t, int idx) {
unsigned i;
lua_State* L = e->L;
pb_Field** f = pb_sortfield((pb_Type*)t);
for (i = 0; i < t->field_count; i++) {
int index = idx + i;
if (!lua_isnoneornil(L, index)) {
lpb_encode_onefield(e, t, f[i], index);
}
}
return 0;
}
static int Lpb_pack(lua_State* L) {
lpb_State* LS = lpb_lstate(L);
const pb_Type* t = lpb_type(LS, lpb_checkslice(L, 1));
lpb_Env e;
int idx = 3;
e.L = L, e.LS = LS, e.b = test_buffer(L, 2);
if (e.b == NULL) {
idx = 2;
pb_resetbuffer(e.b = &LS->buffer);
}
lpbE_pack(&e, t, idx);
if (e.b != &LS->buffer)
lua_settop(L, 3);
else {
lua_pushlstring(L, pb_buffer(e.b), pb_bufflen(e.b));
pb_resetbuffer(e.b);
}
return 1;
}
/* protobuf decode */
#define lpb_withinput(e,ns,stmt) ((e)->s = (ns), (stmt), (e)->s = s)
static int lpbD_message(lpb_Env *e, const pb_Type *t);
static void lpb_usedechooks(lua_State *L, lpb_State *LS, const pb_Type *t) {
lpb_pushdechooktable(L, LS);
if (lua53_rawgetp(L, -1, t) != LUA_TNIL) {
lua_pushvalue(L, -3);
lua_call(L, 1, 1);
if (!lua_isnil(L, -1)) {
lua_pushvalue(L, -1);
lua_replace(L, -4);
}
}
lua_pop(L, 2);
}
static void lpb_pushtypetable(lua_State *L, lpb_State *LS, const pb_Type *t) {
int mode = LS->encode_mode;
luaL_checkstack(L, 2, "too many levels");
lpb_newmsgtable(L, t);
switch (t->is_proto3 && mode == LPB_DEFDEF ? LPB_COPYDEF : mode) {
case LPB_COPYDEF:
lpb_setdeffields(L, LS, t, USE_FIELD|USE_REPEAT|USE_MESSAGE);
break;
case LPB_METADEF:
lpb_setdeffields(L, LS, t, USE_REPEAT|USE_MESSAGE);
lpb_pushdefmeta(L, LS, t);
lua_setmetatable(L, -2);
break;
default:
if (LS->decode_default_array || LS->decode_default_message)
lpb_setdeffields(L, LS, t, USE_REPEAT|USE_MESSAGE);
break;
}
}
static void lpb_fetchtable(lpb_Env *e, const pb_Field *f) {
lua_State *L = e->L;
if (lua53_getfield(L, -1, (const char*)f->name) == LUA_TNIL) {
lua_pop(L, 1);
lua_newtable(L);
lua_pushvalue(L, -1);
lua_setfield(L, -3, (const char*)f->name);
}
}
static void lpbD_rawfield(lpb_Env *e, const pb_Field *f) {
lua_State *L = e->L;
pb_Slice sv, *s = e->s;
const pb_Field *ev = NULL;
uint64_t u64;
switch (f->type_id) {
case PB_Tenum:
if (pb_readvarint64(s, &u64) == 0)
luaL_error(L, "invalid varint value at offset %d", pb_pos(*s)+1);
if (!lpb_lstate(L)->enum_as_value)
ev = pb_field(f->type, (int32_t)u64);
if (ev) lua_pushstring(L, (const char*)ev->name);
else lpb_pushinteger(L, (lua_Integer)u64, 1, lpb_lstate(L)->int64_mode);
if (e->LS->use_dec_hooks) lpb_usedechooks(L, e->LS, f->type);
break;
case PB_Tmessage:
lpb_readbytes(L, s, &sv);
if (f->type == NULL || f->type->is_dead)
lua_pushnil(L);
else {
lpb_pushtypetable(L, e->LS, f->type);
lpb_withinput(e, &sv, lpbD_message(e, f->type));
}
break;
default:
lpb_readtype(L, e->LS, f->type_id, s);
}
}
static void lpbD_checktype(lpb_Env *e, const pb_Field *f, uint32_t tag) {
if (pb_wtypebytype(f->type_id) == (int)pb_gettype(tag)) return;
luaL_error(e->L,
"type mismatch for %s%sfield '%s' at offset %d, "
"%s expected for type %s, got %s",
f->packed ? "packed " : "", f->repeated ? "repeated " : "",
(const char*)f->name,
pb_pos(*e->s)+1,
pb_wtypename(pb_wtypebytype(f->type_id), NULL),
pb_typename(f->type_id, NULL),
pb_wtypename(pb_gettype(tag), NULL));
}
static void lpbD_field(lpb_Env *e, const pb_Field *f, uint32_t tag) {
lpbD_checktype(e, f, tag);
lpbD_rawfield(e, f);
}
static void lpbD_map(lpb_Env *e, const pb_Field *f) {
lua_State *L = e->L;
pb_Slice p, *s = e->s;
int mask = 0, top = lua_gettop(L);
uint32_t tag;
lpb_readbytes(L, s, &p);
if (f->type == NULL) return;
lua_pushnil(L);
lua_pushnil(L);
while (pb_readvarint32(&p, &tag)) {
int n = pb_gettag(tag);
if (n == 1 || n == 2) {
mask |= n;
lpb_withinput(e, &p, lpbD_field(e, pb_field(f->type, n), tag));
lua_replace(L, top+n);
}
}
if (!(mask & 1) && lpb_pushdeffield(L, e->LS, pb_field(f->type, 1), 1))
lua_replace(L, top + 1), mask |= 1;
if (!(mask & 2) && lpb_pushdeffield(L, e->LS, pb_field(f->type, 2), 1))
lua_replace(L, top + 2), mask |= 2;
if (mask == 3) lua_rawset(L, -3); else lua_pop(L, 2);
}
static void lpbD_repeated(lpb_Env *e, const pb_Field *f, uint32_t tag) {
lua_State *L = e->L;
if (pb_gettype(tag) != PB_TBYTES
|| (!f->packed && pb_wtypebytype(f->type_id) == PB_TBYTES)) {
lpbD_field(e, f, tag);
lua_rawseti(L, -2, (lua_Integer)lua_rawlen(L, -2) + 1);
} else {
int len = (int)lua_rawlen(L, -1);
pb_Slice p, *s = e->s;
lpb_readbytes(L, s, &p);
while (p.p < p.end) {
lpb_withinput(e, &p, lpbD_rawfield(e, f));
lua_rawseti(L, -2, ++len);
}
}
}
static int lpbD_message(lpb_Env *e, const pb_Type *t) {
lua_State *L = e->L;
pb_Slice *s = e->s;
uint32_t tag;
luaL_checkstack(L, t->field_count * 2, "not enough stack space for fields");
while (pb_readvarint32(s, &tag)) {
const pb_Field *f = pb_field(t, pb_gettag(tag));
if (f == NULL)
pb_skipvalue(s, tag);
else if (f->type && f->type->is_map) {
lpb_fetchtable(e, f);
lpbD_checktype(e, f, tag);
lpbD_map(e, f);
lua_pop(L, 1);
} else if (f->repeated) {
lpb_fetchtable(e, f);
lpbD_repeated(e, f, tag);
lua_pop(L, 1);
} else {
lua_pushstring(L, (const char*)f->name);
if (f->oneof_idx) {
lua_pushstring(L, (const char*)pb_oneofname(t, f->oneof_idx));
lua_pushvalue(L, -2);
lua_rawset(L, -4);
}
lpbD_field(e, f, tag);
lua_rawset(L, -3);
}
}
if (e->LS->use_dec_hooks) lpb_usedechooks(L, e->LS, t);
return 1;
}
static int lpbD_decode(lua_State *L, pb_Slice s, int start) {
lpb_State *LS = lpb_lstate(L);
const pb_Type *t = lpb_type(LS, lpb_checkslice(L, 1));
lpb_Env e;
argcheck(L, t!=NULL, 1, "type '%s' does not exists", lua_tostring(L, 1));
lua_settop(L, start);
if (!lua_istable(L, start)) {
lua_pop(L, 1);
lpb_pushtypetable(L, LS, t);
}
e.L = L, e.LS = LS, e.s = &s;
return lpbD_message(&e, t);
}
static int Lpb_decode(lua_State *L) {
return lpbD_decode(L, lua_isnoneornil(L, 2) ?
pb_lslice(NULL, 0) :
lpb_checkslice(L, 2), 3);
}
void lpb_pushunpackdef(lua_State* L, lpb_State* LS, const pb_Type* t, pb_Field** l, int top) {
unsigned int i;
int mode = LS->encode_mode;
mode = t->is_proto3 && mode == LPB_DEFDEF ? LPB_COPYDEF : mode;
if (mode != LPB_COPYDEF && mode != LPB_METADEF) return;
for (i = 0; i < t->field_count; i++) {
int idx = top + i + 1;
if (lua_isnoneornil(L, idx) && lpb_pushdeffield(L, LS, l[i], t->is_proto3)) {
lua_replace(L, idx);
}
}
}
static int lpb_unpackfield(lpb_Env *e, const pb_Field* f, uint32_t tag, int last) {
if (!f) {
pb_skipvalue(e->s, tag);
return 0;
}
if (f->type && f->type->is_map) {
lpbD_checktype(e, f, tag);
if (!last) lua_newtable(e->L);
lpbD_map(e, f);
}
else if (f->repeated) {
if (!last) lua_newtable(e->L);
lpbD_repeated(e, f, tag);
}
else {
lpbD_field(e, f, tag);
}
return f->sort_index;
}
static int lpbD_unpack(lpb_Env* e, const pb_Type* t) {
lua_State* L = e->L;
int top = lua_gettop(L);
uint32_t tag;
int last_index = 0;
unsigned int decode_count = 0;
pb_Field **list = pb_sortfield((pb_Type*)t);
lua_settop(L, top + t->field_count);
luaL_checkstack(L, t->field_count * 2, "not enough stack space for fields");
while (pb_readvarint32(e->s, &tag)) {
const pb_Field* f = pb_field(t, pb_gettag(tag));
if (last_index && (!f || f->sort_index != last_index)) {
decode_count++;
lua_replace(L, top + last_index);
last_index = 0;
}
last_index = lpb_unpackfield(e, f, tag, last_index);
}
if (last_index) {
decode_count++;
lua_replace(L, top + last_index);
}
if (decode_count != t->field_count) lpb_pushunpackdef(L, e->LS, t, list, top);
return t->field_count;
}
static int Lpb_unpack(lua_State* L) {
lpb_State* LS = lpb_lstate(L);
const pb_Type* t = lpb_type(LS, lpb_checkslice(L, 1));
pb_Slice s = lpb_checkslice(L, 2);
lpb_Env e;
e.L = L, e.LS = LS, e.s = &s;
argcheck(L, t != NULL, 1, "type '%s' does not exists", lua_tostring(L, 1));
return lpbD_unpack(&e, t);
}
/* pb module interface */
static int Lpb_option(lua_State *L) {
#define OPTS(X) \
X(0, enum_as_name, LS->enum_as_value = 0) \
X(1, enum_as_value, LS->enum_as_value = 1) \
X(2, int64_as_number, LS->int64_mode = LPB_NUMBER) \
X(3, int64_as_string, LS->int64_mode = LPB_STRING) \
X(4, int64_as_hexstring, LS->int64_mode = LPB_HEXSTRING) \
X(5, encode_order, LS->encode_order = 1) \
X(6, no_encode_order, LS->encode_order = 0) \
X(7, encode_default_values, LS->encode_default_values = 1) \
X(8, no_encode_default_values, LS->encode_default_values = 0) \
X(9, auto_default_values, LS->encode_mode = LPB_DEFDEF) \
X(10, no_default_values, LS->encode_mode = LPB_NODEF) \
X(11, use_default_values, LS->encode_mode = LPB_COPYDEF) \
X(12, use_default_metatable, LS->encode_mode = LPB_METADEF) \
X(13, decode_default_array, LS->decode_default_array = 1) \
X(14, no_decode_default_array, LS->decode_default_array = 0) \
X(15, decode_default_message, LS->decode_default_message = 1) \
X(16, no_decode_default_message, LS->decode_default_message = 0) \
X(17, enable_hooks, LS->use_dec_hooks = 1) \
X(18, disable_hooks, LS->use_dec_hooks = 0) \
X(19, enable_enchooks, LS->use_enc_hooks = 1) \
X(20, disable_enchooks, LS->use_enc_hooks = 0) \
static const char *opts[] = {
#define X(ID,NAME,CODE) #NAME,
OPTS(X)
#undef X
NULL
};
lpb_State *LS = lpb_lstate(L);
switch (luaL_checkoption(L, 1, NULL, opts)) {
#define X(ID,NAME,CODE) case ID: CODE; break;
OPTS(X)
#undef X
}
return 0;
#undef OPTS
}
LUALIB_API int luaopen_pb(lua_State *L) {
luaL_Reg libs[] = {
#define ENTRY(name) { #name, Lpb_##name }
ENTRY(clear),
ENTRY(load),
ENTRY(loadfile),
ENTRY(encode),
ENTRY(decode),
ENTRY(types),
ENTRY(fields),
ENTRY(type),
ENTRY(field),
ENTRY(typefmt),
ENTRY(enum),
ENTRY(defaults),
ENTRY(hook),
ENTRY(encode_hook),
ENTRY(tohex),
ENTRY(fromhex),
ENTRY(result),
ENTRY(option),
ENTRY(state),
ENTRY(pack),
ENTRY(unpack),
#undef ENTRY
{ NULL, NULL }
};
luaL_Reg meta[] = {
{ "__gc", Lpb_delete },
{ "setdefault", Lpb_state },
{ NULL, NULL }
};
if (luaL_newmetatable(L, PB_STATE)) {
luaL_setfuncs(L, meta, 0);
lua_pushvalue(L, -1);
lua_setfield(L, -2, "__index");
}
luaL_newlib(L, libs);
return 1;
}
static int Lpb_decode_unsafe(lua_State *L) {
const char *data = (const char *)lua_touserdata(L, 2);
size_t size = (size_t)luaL_checkinteger(L, 3);
if (data == NULL) typeerror(L, 2, "userdata");
return lpbD_decode(L, pb_lslice(data, size), 4);
}
static int Lpb_slice_unsafe(lua_State *L) {
const char *data = (const char *)lua_touserdata(L, 1);
size_t size = (size_t)luaL_checkinteger(L, 2);
if (data == NULL) typeerror(L, 1, "userdata");
return lpb_newslice(L, data, size);
}
static int Lpb_touserdata(lua_State *L) {
pb_Slice s = lpb_toslice(L, 1);
lua_pushlightuserdata(L, (void*)s.p);
lua_pushinteger(L, pb_len(s));
return 2;
}
static int Lpb_use(lua_State *L) {
const char *opts[] = { "global", "local", NULL };
lpb_State *LS = lpb_lstate(L);
const pb_State *GS = global_state;
switch (luaL_checkoption(L, 1, NULL, opts)) {
case 0: if (GS) LS->state = GS; break;
case 1: LS->state = &LS->local; break;
}
lua_pushboolean(L, GS != NULL);
return 1;
}
LUALIB_API int luaopen_pb_unsafe(lua_State *L) {
luaL_Reg libs[] = {
{ "decode", Lpb_decode_unsafe },
{ "slice", Lpb_slice_unsafe },
{ "touserdata", Lpb_touserdata },
{ "use", Lpb_use },
{ NULL, NULL }
};
luaL_newlib(L, libs);
return 1;
}
PB_NS_END
/* cc: flags+='-O3 -ggdb -pedantic -std=c90 -Wall -Wextra --coverage'
* maccc: flags+='-ggdb -shared -undefined dynamic_lookup' output='pb.so'
* win32cc: flags+='-s -mdll -DLUA_BUILD_AS_DLL ' output='pb.dll' libs+='-llua54' */
Reference in a new issue View git blame Copy permalink