82 lines
1.7 KiB
C
82 lines
1.7 KiB
C
|
#include <assert.h>
|
||
|
|
#include <blue/compress/compressor.h>
|
||
|
|
#include <blue/compress/cstream.h>
|
||
|
|
#include <blue/compress/function.h>
|
||
|
|
#include <blue/core/ringbuffer.h>
|
||
|
|
#include <blue/core/stream.h>
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <string.h>
|
||
|
|
|
||
|
|
int main(int argc, const char **argv)
|
||
|
|
{
|
||
|
|
if (argc < 2) {
|
||
|
|
fprintf(stderr, "usage: %s <inpath>\n", argv[0]);
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
const b_compression_function *zstd
|
||
|
|
= b_compression_function_get_by_id(B_COMPRESSOR_FUNCTION_ZSTD);
|
||
|
|
if (!zstd) {
|
||
|
|
fprintf(stderr, "zstd support not enabled\n");
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
b_compression_mode mode = B_COMPRESSION_MODE_DECOMPRESS;
|
||
|
|
|
||
|
|
FILE *in_fp = fopen(argv[1], "rb");
|
||
|
|
if (!in_fp) {
|
||
|
|
fprintf(stderr, "cannot open input file %s\n", argv[1]);
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
b_stream *in_stream = b_stream_open_fp(in_fp);
|
||
|
|
b_cstream *cstream;
|
||
|
|
b_cstream_open(in_stream, zstd, mode, &cstream);
|
||
|
|
|
||
|
|
bool compressed = false;
|
||
|
|
char buf[513];
|
||
|
|
|
||
|
|
for (int i = 0;; i++) {
|
||
|
|
if (compressed) {
|
||
|
|
b_cstream_begin_compressed_section(cstream, NULL);
|
||
|
|
}
|
||
|
|
|
||
|
|
memset(buf, 0x0, sizeof buf);
|
||
|
|
|
||
|
|
size_t nr_read = 0;
|
||
|
|
b_status status
|
||
|
|
= b_cstream_read(cstream, buf, sizeof buf - 1, &nr_read);
|
||
|
|
if (!B_OK(status)) {
|
||
|
|
fprintf(stderr, "write error: %s\n",
|
||
|
|
b_status_description(status));
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (nr_read == 0) {
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
size_t nr_read_compressed = 0;
|
||
|
|
if (compressed) {
|
||
|
|
b_cstream_end_compressed_section(
|
||
|
|
cstream, &nr_read_compressed, &nr_read);
|
||
|
|
}
|
||
|
|
|
||
|
|
printf(" * iteration %d: read %zu (compressed) / %zu "
|
||
|
|
"(uncompressed) bytes (%s)\n",
|
||
|
|
i, nr_read_compressed, nr_read,
|
||
|
|
compressed ? "compressed" : "uncompressed");
|
||
|
|
printf("%s\n", buf);
|
||
|
|
|
||
|
|
compressed = !compressed;
|
||
|
|
}
|
||
|
|
|
||
|
|
printf("Done\n");
|
||
|
|
|
||
|
|
b_cstream_close(cstream);
|
||
|
|
b_stream_close(in_stream);
|
||
|
|
fclose(in_fp);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|