Blame SOURCES/0059-Improve-luaL_addlstring.patch
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From f0e865dd4861520258299d0f2a56491bd9d602e1 Mon Sep 17 00:00:00 2001
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From: Mike Pall <mike>
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Date: Thu, 10 Jan 2019 13:09:17 +0100
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Subject: [PATCH 59/72] Improve luaL_addlstring().
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Thanks to Domingo Alvarez Duarte.
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---
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src/lib_aux.c | 11 +++++++++--
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1 file changed, 9 insertions(+), 2 deletions(-)
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diff --git a/src/lib_aux.c b/src/lib_aux.c
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index c40565c..2682a38 100644
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--- a/src/lib_aux.c
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+++ b/src/lib_aux.c
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@@ -218,8 +218,15 @@ LUALIB_API char *luaL_prepbuffer(luaL_Buffer *B)
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LUALIB_API void luaL_addlstring(luaL_Buffer *B, const char *s, size_t l)
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{
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- while (l--)
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- luaL_addchar(B, *s++);
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+ if (l <= bufffree(B)) {
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+ memcpy(B->p, s, l);
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+ B->p += l;
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+ } else {
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+ emptybuffer(B);
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+ lua_pushlstring(B->L, s, l);
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+ B->lvl++;
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+ adjuststack(B);
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+ }
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}
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LUALIB_API void luaL_addstring(luaL_Buffer *B, const char *s)
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--
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2.20.1
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