diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/qpdf/InputSource.hh | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/qpdf/InputSource.hh b/include/qpdf/InputSource.hh index 896a2559..8850828d 100644 --- a/include/qpdf/InputSource.hh +++ b/include/qpdf/InputSource.hh @@ -83,6 +83,9 @@ class QPDF_DLL_CLASS InputSource virtual void seek(qpdf_offset_t offset, int whence) = 0; virtual void rewind() = 0; virtual size_t read(char* buffer, size_t length) = 0; + + // Note: you can only unread the character you just read. The + // specific character is ignored by some implementations. virtual void unreadCh(char ch) = 0; protected: |