prosody
9a86e7cbdd79
util-src/compat.c

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util-src/compat.c @ 13262:9a86e7cbdd79

mod_storage_internal: Fix fast trimming of archive with exactly one item This method would previously never delete the first (and only) item since it works out which item should become the first item after the trim operation, which doesn't make sense when all should be removed. This also works as an optimization for when all the last item should be trimmed, thus items should be removed.
author Kim Alvefur <zash@zash.se>
date Sun, 24 Sep 2023 13:41:54 +0200
parent 12976:a187600ec7d6
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
9561
cfc7b2f7251e util.xpcall, util.compat: Add non-hacky multi-argument xpcall() for Lua 5.1
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1
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2 #include <lua.h>
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3 #include <lauxlib.h>
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6 static int lc_xpcall (lua_State *L) {
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7 int ret;
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8 int n_arg = lua_gettop(L);
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9 /* f, msgh, p1, p2... */
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10 luaL_argcheck(L, n_arg >= 2, 2, "value expected");
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11 lua_pushvalue(L, 1); /* f to top */
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12 lua_pushvalue(L, 2); /* msgh to top */
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13 lua_replace(L, 1); /* msgh to 1 */
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14 lua_replace(L, 2); /* f to 2 */
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15 /* msgh, f, p1, p2... */
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16 ret = lua_pcall(L, n_arg - 2, LUA_MULTRET, 1);
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17 lua_pushboolean(L, ret == 0);
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18 lua_replace(L, 1);
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19 return lua_gettop(L);
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20 }
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21
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22 int luaopen_prosody_util_compat(lua_State *L) {
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23 lua_createtable(L, 0, 2);
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24 {
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25 lua_pushcfunction(L, lc_xpcall);
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26 lua_setfield(L, -2, "xpcall");
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27 }
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28 return 1;
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29 }
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30
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31 int luaopen_util_compat(lua_State *L) {
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32 return luaopen_prosody_util_compat(L);
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33 }