/* Copyright 2011-2018 David Robillard Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies. THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #ifndef SERD_BYTE_SINK_H #define SERD_BYTE_SINK_H #include #include #include "serd/serd.h" #include "system.h" typedef struct SerdByteSinkImpl { SerdSink sink; void* stream; char* buf; size_t size; size_t block_size; } SerdByteSink; static inline SerdByteSink serd_byte_sink_new(SerdSink sink, void* stream, size_t block_size) { SerdByteSink bsink; bsink.sink = sink; bsink.stream = stream; bsink.size = 0; bsink.block_size = block_size; bsink.buf = ((block_size > 1) ? (char*)serd_allocate_buffer(block_size) : NULL); return bsink; } static inline void serd_byte_sink_flush(SerdByteSink* bsink) { if (bsink->block_size > 1 && bsink->size > 0) { bsink->sink(bsink->buf, bsink->size, bsink->stream); bsink->size = 0; } } static inline void serd_byte_sink_free(SerdByteSink* bsink) { serd_byte_sink_flush(bsink); free(bsink->buf); bsink->buf = NULL; } static inline size_t serd_byte_sink_write(const void* buf, size_t len, SerdByteSink* bsink) { if (len == 0) { return 0; } else if (bsink->block_size == 1) { return bsink->sink(buf, len, bsink->stream); } const size_t orig_len = len; while (len) { const size_t space = bsink->block_size - bsink->size; const size_t n = MIN(space, len); // Write as much as possible into the remaining buffer space memcpy(bsink->buf + bsink->size, buf, n); bsink->size += n; buf = (const char*)buf + n; len -= n; // Flush page if buffer is full if (bsink->size == bsink->block_size) { bsink->sink(bsink->buf, bsink->block_size, bsink->stream); bsink->size = 0; } } return orig_len; } #endif // SERD_BYTE_SINK_H