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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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51
examples/streaming_compression.c
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@ -13,53 +13,7 @@
#include <stdio.h> // fprintf, perror, feof, fopen, etc.
#include <string.h> // strlen, memset, strcat
#include <zstd.h> // presumes zstd library is installed
static void* malloc_orDie(size_t size)
{
void* const buff = malloc(size);
if (buff) return buff;
/* error */
perror("malloc:");
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(3);
}
static size_t fread_orDie(void* buffer, size_t sizeToRead, FILE* file)
{
size_t const readSize = fread(buffer, 1, sizeToRead, file);
if (readSize == sizeToRead) return readSize; /* good */
if (feof(file)) return readSize; /* good, reached end of file */
/* error */
perror("fread");
exit(4);
}
static size_t fwrite_orDie(const void* buffer, size_t sizeToWrite, FILE* file)
{
size_t const writtenSize = fwrite(buffer, 1, sizeToWrite, file);
if (writtenSize == sizeToWrite) return sizeToWrite; /* good */
/* error */
perror("fwrite");
exit(5);
}
static size_t fclose_orDie(FILE* file)
{
if (!fclose(file)) return 0;
/* error */
perror("fclose");
exit(6);
}
#include "utils.h"
static void compressFile_orDie(const char* fname, const char* outName, int cLevel)
{
@ -102,8 +56,7 @@ static void compressFile_orDie(const char* fname, const char* outName, int cLeve
ZSTD_freeCStream(cstream);
fclose_orDie(fout);
fclose_orDie(fin);
free(buffIn);
fclose_orDie(fin); free(buffIn);
free(buffOut);
}