diff options
Diffstat (limited to 'libbutl/fdstream.hxx')
| -rw-r--r-- | libbutl/fdstream.hxx | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/libbutl/fdstream.hxx b/libbutl/fdstream.hxx index 771d242..27530e2 100644 --- a/libbutl/fdstream.hxx +++ b/libbutl/fdstream.hxx @@ -10,7 +10,7 @@ #include <istream> #include <ostream> #include <utility> // move() -#include <cstdint> // uint16_t +#include <cstdint> // uint16_t, uint64_t #include <libbutl/export.hxx> @@ -143,6 +143,11 @@ namespace butl using base::egptr; using base::gbump; + // Return the (logical) position of the next byte to be read. + // + uint64_t + tellg () const {return off_ - (egptr () - gptr ());} + private: bool load (); @@ -159,12 +164,18 @@ namespace butl virtual std::streamsize xsputn (const char_type*, std::streamsize); + // Return the (logical) position of the next byte to be written. + // + uint64_t + tellp () const {return off_ + (pptr () - buf_);} + private: bool save (); private: auto_fd fd_; + uint64_t off_; char buf_[8192]; bool non_blocking_ = false; }; |