diff options
Diffstat (limited to 'lib/stream.h')
| -rw-r--r-- | lib/stream.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/lib/stream.h b/lib/stream.h index b4d981b1..a7906573 100644 --- a/lib/stream.h +++ b/lib/stream.h @@ -177,6 +177,8 @@ Inline bool stream_has_overflowed(struct stream* s) ; Inline void stream_clear_overrun(struct stream* s) ; Inline void stream_clear_overflow(struct stream* s) ; +Inline bool stream_has_written_beyond(struct stream* s, size_t limit) ; + Inline void stream_set_getp(struct stream *, size_t); Inline void stream_set_endp(struct stream *, size_t); Inline void stream_set_startp(struct stream* s, size_t) ; @@ -503,6 +505,27 @@ stream_clear_overflow(struct stream* s) } /*------------------------------------------------------------------------------ + * Test if the endp is beyond the given limit + * + * A stream may be set up to be longer than some actual limit, so that the + * extent of overflowing beyond that limit can be measured. This test can + * then be used to see if the endp is *currently* within the given limit. + * + * Returns: true <=> endp is *beyond* the given limit. + * + * NB: the limit MUST be less than the size -- for if not, this is *always* + * going to return false, because the s->endp is *always* <= s->size ! + */ +Inline bool +stream_has_written_beyond(struct stream* s, size_t limit) +{ + qassert_stream(s) ; + qassert(limit < s->size) ; + + return (s->endp > limit) ; +} ; + +/*------------------------------------------------------------------------------ * Set s->getp to given value. * * If value > s->endp will force to s->endp and set s->overrun. |