1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/ucx/buffer.h Wed Oct 10 09:54:57 2012 +0200
1.3 @@ -0,0 +1,52 @@
1.4 +#ifndef BUFFER_H
1.5 +#define BUFFER_H
1.6 +
1.7 +#include <stdio.h>
1.8 +
1.9 +#ifdef __cplusplus
1.10 +extern "C" {
1.11 +#endif
1.12 +
1.13 +
1.14 +/* the user shall not modify values */
1.15 +typedef struct UcxBuffer UcxBuffer;
1.16 +
1.17 +UcxBuffer *ucx_buffer_new(void *space, size_t length);
1.18 +void ucx_buffer_free(UcxBuffer* buffer);
1.19 +
1.20 +/*
1.21 + * Moves the position of the buffer to a new position relative to whence.
1.22 + *
1.23 + * SEEK_SET marks the start of the buffer
1.24 + * SEEK_CUR marks the current position
1.25 + * SEEK_END marks the first 0-byte in the buffer
1.26 + *
1.27 + * ucx_memseek returns 0 on success and -1 if the new position is beyond the
1.28 + * bounds of the allocated buffer. In that case the position of the buffer
1.29 + * remains unchanged.
1.30 + *
1.31 + */
1.32 +int ucx_buffer_seek(UcxBuffer *buffer, off_t offset, int whence);
1.33 +size_t ucx_buffer_tell(UcxBuffer *buffer);
1.34 +
1.35 +/*
1.36 + * returns non-zero, iff the current buffer position has exceeded the last
1.37 + * available byte of the underlying buffer
1.38 + *
1.39 + */
1.40 +int ucx_buffer_eof(UcxBuffer *buffer);
1.41 +
1.42 +size_t ucx_bufio(void *d, size_t s, size_t n, UcxBuffer* b, _Bool read);
1.43 +#define ucx_buffer_write(data, itemsize, nitems, buffer) \
1.44 + ucx_bufio(data, itemsize, nitems, buffer, 0)
1.45 +#define ucx_buffer_read(data, itemsize, nitems, buffer) \
1.46 + ucx_bufio(data, itemsize, nitems, buffer, 1)
1.47 +int ucx_buffer_putc(UcxBuffer *b, int c);
1.48 +int ucx_buffer_getc(UcxBuffer *b);
1.49 +
1.50 +#ifdef __cplusplus
1.51 +}
1.52 +#endif
1.53 +
1.54 +#endif /* BUFFER_H */
1.55 +
