Hi,
Anybody can help me to review it? Thank you!
On Mon, Feb 25, 2013 at 2:17 PM, Lixun Peng <pengli...@gmail.com> wrote:
> Hi Guys,
>
> I want to copy the contents of the IO_CACHE into a string.
> But I'm not found a function can do it, but I found
> "my_b_copy_to_file" can do the similar thing, so I implement a
> function "my_b_copy_to_string" by imitating "my_b_copy_to_file", to do
> this thing.
>
> Could you please review my code?
>
>
> char *my_b_copy_to_string(IO_CACHE *cache, size_t *bytes_in_cache)
> {
> char *buff;
> char *tmp_buff;
> size_t now_size;
> size_t inc_size;
>
> /* Reinit the cache to read from the beginning of the cache */
> if (reinit_io_cache(cache, READ_CACHE, 0L, FALSE, FALSE))
> return NULL;
>
> now_size= my_b_bytes_in_cache(cache);
> inc_size= 0;
> buff= (char *) my_malloc(now_size + 1, MYF(0));
> tmp_buff= buff;
> do
> {
> now_size+= inc_size;
> if(inc_size > 0)
> {
> buff= (char *) my_realloc(buff, now_size + 1, MYF(0));
> tmp_buff= buff + (now_size - inc_size);
> memcpy(tmp_buff, cache->read_pos, inc_size);
> }
> else
> {
> memcpy(tmp_buff, cache->read_pos, now_size);
> }
> cache->read_pos= cache->read_end;
> } while ((inc_size= my_b_fill(cache)));
> buff[now_size]= '\0';
>
> reinit_io_cache(cache, WRITE_CACHE, 0, FALSE, TRUE);
> *bytes_in_cache= now_size;
> return buff;
> }
>
Thanks,
Lixun
--
Senior MySQL Developer @ Taobao.com
Mobile Phone: +86 18658156856 (Hangzhou)
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