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/*
* Copyright (C) 2018-2021 Intel Corporation
*
* SPDX-License-Identifier: MIT
*
*/
#include "file_io.h"
#include "shared/source/helpers/debug_helpers.h"
#include "shared/source/helpers/stdio.h"
#include <cstring>
#include <new>
std::unique_ptr<char[]> loadDataFromFile(
const char *filename,
size_t &retSize) {
FILE *fp = nullptr;
size_t nsize = 0;
std::unique_ptr<char[]> ret;
DEBUG_BREAK_IF(nullptr == filename);
// Open the file
fopen_s(&fp, filename, "rb");
if (fp) {
// Allocate a buffer for the file contents
fseek(fp, 0, SEEK_END);
nsize = (size_t)ftell(fp);
fseek(fp, 0, SEEK_SET);
ret.reset(new (std::nothrow) char[nsize + 1]);
if (ret) {
// we initialize to all zeroes before reading in data
memset(ret.get(), 0x00, nsize + 1);
[[maybe_unused]] auto read = fread(ret.get(), sizeof(unsigned char), nsize, fp);
DEBUG_BREAK_IF(read != nsize);
} else {
nsize = 0;
}
fclose(fp);
}
retSize = nsize;
return ret;
}
size_t writeDataToFile(
const char *filename,
const void *pData,
size_t dataSize) {
FILE *fp = nullptr;
size_t nsize = 0;
DEBUG_BREAK_IF(nullptr == pData);
DEBUG_BREAK_IF(nullptr == filename);
fopen_s(&fp, filename, "wb");
if (fp) {
nsize = fwrite(pData, sizeof(unsigned char), dataSize, fp);
fclose(fp);
}
return nsize;
}
bool fileExists(const std::string &fileName) {
FILE *pFile = nullptr;
DEBUG_BREAK_IF(fileName.empty());
DEBUG_BREAK_IF(fileName == "");
fopen_s(&pFile, fileName.c_str(), "rb");
if (pFile) {
fclose(pFile);
}
return pFile != nullptr;
}
bool fileExistsHasSize(const std::string &fileName) {
FILE *pFile = nullptr;
size_t nsize = 0;
DEBUG_BREAK_IF(fileName.empty());
DEBUG_BREAK_IF(fileName == "");
fopen_s(&pFile, fileName.c_str(), "rb");
if (pFile) {
fseek(pFile, 0, SEEK_END);
nsize = (size_t)ftell(pFile);
fclose(pFile);
}
return pFile != nullptr && nsize > 0;
}
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