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-rw-r--r--examples/simple_decompression.c108
1 files changed, 0 insertions, 108 deletions
diff --git a/examples/simple_decompression.c b/examples/simple_decompression.c
deleted file mode 100644
index 4b7ea59e50cc..000000000000
--- a/examples/simple_decompression.c
+++ /dev/null
@@ -1,108 +0,0 @@
-/**
- * Copyright 2016-present, Yann Collet, Facebook, Inc.
- * All rights reserved.
- *
- * This source code is licensed under the license found in the
- * LICENSE-examples file in the root directory of this source tree.
- */
-
-#include <stdlib.h> // malloc, exit
-#include <stdio.h> // printf
-#include <string.h> // strerror
-#include <errno.h> // errno
-#include <sys/stat.h> // stat
-#define ZSTD_STATIC_LINKING_ONLY // ZSTD_findDecompressedSize
-#include <zstd.h> // presumes zstd library is installed
-
-
-static off_t fsize_orDie(const char *filename)
-{
- struct stat st;
- if (stat(filename, &st) == 0) return st.st_size;
- /* error */
- fprintf(stderr, "stat: %s : %s \n", filename, strerror(errno));
- exit(1);
-}
-
-static FILE* fopen_orDie(const char *filename, const char *instruction)
-{
- FILE* const inFile = fopen(filename, instruction);
- if (inFile) return inFile;
- /* error */
- fprintf(stderr, "fopen: %s : %s \n", filename, strerror(errno));
- exit(2);
-}
-
-static void* malloc_orDie(size_t size)
-{
- void* const buff = malloc(size + !size); /* avoid allocating size of 0 : may return NULL (implementation dependent) */
- if (buff) return buff;
- /* error */
- fprintf(stderr, "malloc: %s \n", strerror(errno));
- exit(3);
-}
-
-static void* loadFile_orDie(const char* fileName, size_t* size)
-{
- off_t const buffSize = fsize_orDie(fileName);
- FILE* const inFile = fopen_orDie(fileName, "rb");
- void* const buffer = malloc_orDie(buffSize);
- size_t const readSize = fread(buffer, 1, buffSize, inFile);
- if (readSize != (size_t)buffSize) {
- fprintf(stderr, "fread: %s : %s \n", fileName, strerror(errno));
- exit(4);
- }
- fclose(inFile); /* can't fail (read only) */
- *size = buffSize;
- return buffer;
-}
-
-
-static void decompress(const char* fname)
-{
- size_t cSize;
- void* const cBuff = loadFile_orDie(fname, &cSize);
- unsigned long long const rSize = ZSTD_findDecompressedSize(cBuff, cSize);
- if (rSize==ZSTD_CONTENTSIZE_ERROR) {
- fprintf(stderr, "%s : it was not compressed by zstd.\n", fname);
- exit(5);
- } else if (rSize==ZSTD_CONTENTSIZE_UNKNOWN) {
- fprintf(stderr,
- "%s : original size unknown. Use streaming decompression instead.\n", fname);
- exit(6);
- }
-
- void* const rBuff = malloc_orDie((size_t)rSize);
-
- size_t const dSize = ZSTD_decompress(rBuff, rSize, cBuff, cSize);
-
- if (dSize != rSize) {
- fprintf(stderr, "error decoding %s : %s \n", fname, ZSTD_getErrorName(dSize));
- exit(7);
- }
-
- /* success */
- printf("%25s : %6u -> %7u \n", fname, (unsigned)cSize, (unsigned)rSize);
-
- free(rBuff);
- free(cBuff);
-}
-
-
-int main(int argc, const char** argv)
-{
- const char* const exeName = argv[0];
-
- if (argc!=2) {
- printf("wrong arguments\n");
- printf("usage:\n");
- printf("%s FILE\n", exeName);
- return 1;
- }
-
- decompress(argv[1]);
-
- printf("%s correctly decoded (in memory). \n", argv[1]);
-
- return 0;
-}