lib/zstd
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Refactor examples to avoid code duplication.

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This commit is contained in:
Hung Dang
2018-12-06 22:42:19 -05:00
parent f6591e4a04
commit 0f52b0caad
8 changed files with 189 additions and 360 deletions
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45
examples/dictionary_decompression.c
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@ -17,49 +17,7 @@
#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 */
perror(filename);
exit(1);
}
static FILE* fopen_orDie(const char *filename, const char *instruction)
{
FILE* const inFile = fopen(filename, instruction);
if (inFile) return inFile;
/* error */
perror(filename);
exit(2);
}
static void* malloc_orDie(size_t size)
{
void* const buff = malloc(size);
if (buff) return buff;
/* error */
perror("malloc");
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);
*size = buffSize;
return buffer;
}
#include "utils.h"
/* createDict() :
`dictFileName` is supposed to have been created using `zstd --train` */
@ -74,7 +32,6 @@ static ZSTD_DDict* createDict_orDie(const char* dictFileName)
return ddict;
}
static void decompress(const char* fname, const ZSTD_DDict* ddict)
{
size_t cSize;