diff options
Diffstat (limited to 'common/streambuf.cpp')
-rw-r--r-- | common/streambuf.cpp | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/common/streambuf.cpp b/common/streambuf.cpp new file mode 100644 index 0000000..2d87f9a --- /dev/null +++ b/common/streambuf.cpp @@ -0,0 +1,60 @@ +/** + * StreamBuf.cpp + * + * Implementation file for the StreamBuf class + * + * @see http://www.mr-edd.co.uk/blog/beginners_guide_streambuf + * + * @author Emiel Bruijntjes <emiel.bruijntjes@copernica.com> + * @copyright 2014 Copernica BV + */ +#include "includes.h" + +/** + * Set up namespace + */ +namespace Php { + +/** + * Constructor + * @param error + */ +StreamBuf::StreamBuf(int error) : _error(error) +{ + // we reserve one byte, so that when overflow is called, we still have one + // byte extra in the buffer to put the overflowed byte int + setp(_buffer, _buffer+1024-1); +} + + +/** + * Method that is called when the internal buffer overflows + * @param c + * @return int + */ +int StreamBuf::overflow(int c) +{ + // for error buffers, overflow is simply discarded + if (_error) return c; + + // end-of-file has not output, we call EOF directly, and by using the + // comma operator we ensure that EOF is returned + if (c == EOF) return sync(), EOF; + + // because we lied the underlying buffer about the size of the buffer + // by one byte, there is no real overflow, and we can still add the byte + // to the end of the buffer + *pptr() = c; + + // increment buffer size + pbump(1); + + // and now we're going to syn the buffer + return sync() == -1 ? EOF : c; +} + +/** + * End namespace + */ +} +
\ No newline at end of file |