void luaL_addvalue (luaL_Buffer *B) {
LuaThread *L = B->L;
size_t l;
const char *s = lua_tolstring(L, -1, &l);
if (buffonstack(B))
lua_insert(L, -2); /* put value below buffer */
luaL_addlstring(B, s, l);
L->stack_.remove((buffonstack(B)) ? -2 : -1); /* remove value */
}
LUALIB_API void luaL_addvalue (luaL_Buffer *B) {
lua_State *L = B->L;
size_t l;
const char *s = lua_tolstring(L, -1, &l);
if (buffonstack(B))
lua_insert(L, -2); /* put value below buffer */
luaL_addlstring(B, s, l);
lua_remove(L, (buffonstack(B)) ? -2 : -1); /* remove value */
}
LUALIB_API void luaL_pushresult (luaL_Buffer *B)
{
lua_State *L = B->L;
lua_pushlstring(L, B->b, B->n);
if (buffonstack(B))
lua_remove(L, -2); /* remove old buffer */
}
LUALIB_API void luaL_pushresult (luaL_Buffer *B) {
lua_State *L = B->L;
lua_pushlstring(L, B->b, B->n);
if (buffonstack(B)) {
resizebox(L, -2, 0); /* delete old buffer */
lua_remove(L, -2); /* remove its header from the stack */
}
}
LUALIB_API void luaL_pushresult (luaL_Buffer *B) {
lua_State *L = B->L;
lua_pushlstring(L, B->b, B->n);
if (buffonstack(B)) {
lua_copy(L, -1, -3); /* move string to reserved slot */
lua_pop(L, 2); /* pop string and box (closing the box) */
}
}
/*
** returns a pointer to a free area with at least 'sz' bytes
*/
LUALIB_API char *luaL_prepbuffsize (luaL_Buffer *B, size_t sz) {
lua_State *L = B->L;
if (B->size - B->n < sz) { /* not enough space? */
char *newbuff;
size_t newsize = B->size * 2; /* double buffer size */
if (newsize - B->n < sz) /* not bit enough? */
newsize = B->n + sz;
if (newsize < B->n || newsize - B->n < sz)
luaL_error(L, "buffer too large");
/* create larger buffer */
newbuff = (char *)lua_newuserdata(L, newsize * sizeof(char));
/* move content to new buffer */
memcpy(newbuff, B->b, B->n * sizeof(char));
if (buffonstack(B))
lua_remove(L, -2); /* remove old buffer */
B->b = newbuff;
B->size = newsize;
}
return &B->b[B->n];
}
/*
** returns a pointer to a free area with at least 'sz' bytes
*/
LUALIB_API char *luaL_prepbuffsize (luaL_Buffer *B, size_t sz) {
lua_State *L = B->L;
if (B->size - B->n < sz) { /* not enough space? */
char *newbuff;
size_t newsize = B->size * 2; /* double buffer size */
if (newsize - B->n < sz) /* not big enough? */
newsize = B->n + sz;
if (newsize < B->n || newsize - B->n < sz)
luaL_error(L, "buffer too large");
/* create larger buffer */
if (buffonstack(B))
newbuff = (char *)resizebox(L, -1, newsize);
else { /* no buffer yet */
newbuff = (char *)newbox(L, newsize);
memcpy(newbuff, B->b, B->n * sizeof(char)); /* copy original content */
}
B->b = newbuff;
B->size = newsize;
}
return &B->b[B->n];
}
/*
** Returns a pointer to a free area with at least 'sz' bytes in buffer
** 'B'. 'boxidx' is the relative position in the stack where the
** buffer's box is or should be.
*/
static char *prepbuffsize (luaL_Buffer *B, size_t sz, int boxidx) {
if (B->size - B->n >= sz) /* enough space? */
return B->b + B->n;
else {
lua_State *L = B->L;
char *newbuff;
size_t newsize = newbuffsize(B, sz);
/* create larger buffer */
if (buffonstack(B)) /* buffer already has a box? */
newbuff = (char *)resizebox(L, boxidx, newsize); /* resize it */
else { /* no box yet */
lua_pushnil(L); /* reserve slot for final result */
newbox(L); /* create a new box */
/* move box (and slot) to its intended position */
lua_rotate(L, boxidx - 1, 2);
lua_toclose(L, boxidx);
newbuff = (char *)resizebox(L, boxidx, newsize);
memcpy(newbuff, B->b, B->n * sizeof(char)); /* copy original content */
}
B->b = newbuff;
B->size = newsize;
return newbuff + B->n;
}
}
void luaL_pushresult (luaL_Buffer *B) {
LuaThread *L = B->L;
lua_pushlstring(L, B->b, B->n);
if (buffonstack(B))
L->stack_.remove(-2); /* remove old buffer */
}
