Hello !
I have the code bellow that I want to manually allocate to use in
runtime code, because I declared the payload "buf[1]" the
compiler complains about index out of bounds then I managed to do
this "*(&tmp.buf + tmp.used++) = c;" instead of
"tmp.buf[tmp.used++] = c;" as is done usually i "C" there is
another easy way to achieve the same result in "D" (remember
manual memory allocation) ?
Cheers !
--------Code
struct lua_char_buffer_st {
size_t size, used;
char buf[1];
};
private enum MIN_ALLOC_SIZE = 2048;
private size_t NEW_SIZE(size_t sz) {return
(((sz/MIN_ALLOC_SIZE)+1)*MIN_ALLOC_SIZE);}
lua_char_buffer_st *lua_new_char_buffer(size_t size){
lua_char_buffer_st *b;
size_t n = NEW_SIZE(size);
b = cast(lua_char_buffer_st*)malloc(lua_char_buffer_st.sizeof +
n);
if(b is null) return null;
b.size = n;
b.used = 0;
return b;
}
int lua_char_buffer_add_char(ref LuaMatchState ms,
lua_char_buffer_st **b, char c){
lua_char_buffer_st *tmp = *b;
if(tmp.used+1 >= tmp.size){
size_t new_size = tmp.size+MIN_ALLOC_SIZE;
tmp = cast(lua_char_buffer_st*)realloc(tmp,
lua_char_buffer_st.sizeof + new_size);
if(tmp is null){
ms.error = "not enough memory when reallocating";
return 0;
}
*b = tmp;
tmp.size = new_size;
}
*(&tmp.buf + tmp.used++) = c;
return 1;
}
int lua_char_buffer_add_str(ref LuaMatchState ms,
lua_char_buffer_st **b, const(char) *str, ptrdiff_t len){
lua_char_buffer_st *tmp = *b;
if(len < 0) len = strlen(str);
if(tmp.used+len >= tmp.size){
size_t new_size = tmp.size + NEW_SIZE(len);
tmp = cast(lua_char_buffer_st*)realloc(tmp,
lua_char_buffer_st.sizeof + new_size);
if(tmp is null){
ms.error = "not enough memory when reallocating";
return 0;
}
*b = tmp;
tmp.size = new_size;
}
memcpy(&tmp.buf + tmp.used, str, len);
tmp.used += len;
return 1;
}
