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zstd
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contrib/seqBench/seqBench.c
53 строки
2 KB
Danielle Rozenblit
use ZSTD_sequenceBound in seqBench
09 сен 2022, 23:04
09 сен 2022, 23:04
1613caf
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#define ZSTD_STATIC_LINKING_ONLY #include <zstd.h> #include <stdio.h> #include <stdlib.h> #include <assert.h> #include <string.h> int main(int argc, char *argv[]) { ZSTD_CCtx* zc = ZSTD_createCCtx(); if (argc != 2) { printf("Usage: seqBench <file>\n"); // TODO provide the block delim option here return 1; } FILE *f = fopen(argv[1], "rb"); fseek(f, 0, SEEK_END); long inBufSize = ftell(f); fseek(f, 0, SEEK_SET); char *inBuf = malloc(inBufSize + 1); fread(inBuf, inBufSize, 1, f); fclose(f); size_t seqsSize = ZSTD_sequenceBound(inBufSize); ZSTD_Sequence *seqs = (ZSTD_Sequence*)malloc(seqsSize * sizeof(ZSTD_Sequence)); char *outBuf = malloc(ZSTD_compressBound(inBufSize)); ZSTD_generateSequences(zc, seqs, seqsSize, inBuf, inBufSize); ZSTD_CCtx_setParameter(zc, ZSTD_c_blockDelimiters, ZSTD_sf_explicitBlockDelimiters); size_t outBufSize = ZSTD_compressSequences(zc, outBuf, inBufSize, seqs, seqsSize, inBuf, inBufSize); if (ZSTD_isError(outBufSize)) { printf("ERROR: %lu\n", outBufSize); return 1; } char *validationBuf = malloc(inBufSize); ZSTD_decompress(validationBuf, inBufSize, outBuf, outBufSize); if (memcmp(inBuf, validationBuf, inBufSize) == 0) { printf("Compression and decompression were successful!\n"); } else { printf("ERROR: input and validation buffers don't match!\n"); for (int i = 0; i < inBufSize; i++) { if (inBuf[i] != validationBuf[i]) { printf("First bad index: %d\n", i); break; } } } return 0; }