bluelib/test/compress/mix-compress.c

#include <assert.h>
#include <blue/compress/compressor.h>
#include <blue/compress/cstream.h>
#include <blue/compress/zstd.h>
#include <blue/core/ringbuffer.h>
#include <blue/core/stream.h>
#include <stdio.h>
#include <string.h>

#define NR_ITERATIONS 10

static const char source[]
	= "Lorem ipsum dolor sit amet, consectetur adipiscing elit. In sodales "
	  "scelerisque lacus. In ullamcorper sem a nibh venenatis efficitur at "
	  "id quam. Nam quis urna nulla. In in consectetur ligula. Morbi "
	  "ligula neque, imperdiet quis erat et, mollis consequat sapien. "
	  "Vivamus quis bibendum nulla. Vivamus tincidunt mauris sed nisl "
	  "vulputate pellentesque. Nam blandit ac risus ut auctor. Fusce "
	  "sagittis quam ut sapien accumsan, pellentesque finibus elit "
	  "eleifend. Duis sodales ex urna, a porttitor ex bibendum quis quam.";

int main(int argc, const char **argv)
{
	if (argc < 2) {
		fprintf(stderr, "usage: %s <outpath>\n", argv[0]);
		return -1;
	}

	b_compressor_mode mode = B_COMPRESSOR_MODE_COMPRESS;

	FILE *out_fp = fopen(argv[1], "wb");
	if (!out_fp) {
		fprintf(stderr, "cannot open output file %s\n", argv[1]);
		return -1;
	}

	b_stream *out_stream = b_stream_open_fp(out_fp);
	b_cstream *cstream;
	b_cstream_open(out_stream, B_TYPE_ZSTD_COMPRESSOR, mode, &cstream);

	const size_t source_len = strlen(source);
	bool compressed = false;

	for (int i = 0; i < NR_ITERATIONS; i++) {
		if (compressed) {
			b_cstream_begin_compressed_section(cstream, NULL);
		}

		size_t nr_written = 0;
		b_status status = b_cstream_write(
			cstream, source, source_len, &nr_written);
		if (!B_OK(status)) {
			fprintf(stderr, "write error: %s\n",
			        b_status_description(status));
			break;
		}

		size_t nr_written_compressed = 0;

		if (compressed) {
			b_cstream_end_compressed_section(
				cstream, &nr_written_compressed, &nr_written);
		}

		size_t tx_total = 0;
		b_cstream_tx_bytes(cstream, &tx_total);
		printf("iteration %d: wrote %zu (compressed) / %zu "
		       "(uncompressed) / %zu (total) bytes (%s)\n",
		       i, nr_written_compressed, nr_written, tx_total,
		       compressed ? "compressed" : "uncompressed");

		compressed = !compressed;
	}

	printf("Done\n");

	b_cstream_unref(cstream);
	b_stream_unref(out_stream);
	fclose(out_fp);

	return 0;
}