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#ifndef ISTREAM_SEEKABLE_H
#define ISTREAM_SEEKABLE_H
/* Create a seekable stream from given NULL-terminated list of input streams.
Try to keep it in memory, but use a temporary file if it's too large.
When max_buffer_size is reached, fd_callback is called. It should return
the fd and path of the created file. Typically the callback would also
unlink the file before returning. */
struct istream *
i_streams_merge(struct istream *input[], size_t max_buffer_size,
int (*fd_callback)(const char **path_r, void *context),
void *context) ATTR_NULL(4);
/* Same as i_streams_merge(), but if all of the inputs are seekable already,
create a concat stream instead. */
struct istream *
i_stream_create_seekable(struct istream *input[],
size_t max_buffer_size,
int (*fd_callback)(const char **path_r, void *context),
void *context) ATTR_NULL(4);
struct istream *
i_stream_create_seekable_path(struct istream *input[],
size_t max_buffer_size,
const char *temp_path_prefix);
#endif
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