file-utils.cc
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// sherpa-onnx/csrc/file-utils.cc
//
// Copyright (c) 2022-2023 Xiaomi Corporation
#include "sherpa-onnx/csrc/file-utils.h"
#include <fstream>
#include <memory>
#include <sstream>
#include <string>
#include "sherpa-onnx/csrc/macros.h"
namespace sherpa_onnx {
bool FileExists(const std::string &filename) {
return std::ifstream(filename).good();
}
void AssertFileExists(const std::string &filename) {
if (!FileExists(filename)) {
SHERPA_ONNX_LOGE("filename '%s' does not exist", filename.c_str());
exit(-1);
}
}
std::vector<char> ReadFile(const std::string &filename) {
std::ifstream input(filename, std::ios::binary);
std::vector<char> buffer(std::istreambuf_iterator<char>(input), {});
return buffer;
}
#if __ANDROID_API__ >= 9
std::vector<char> ReadFile(AAssetManager *mgr, const std::string &filename) {
AAsset *asset = AAssetManager_open(mgr, filename.c_str(), AASSET_MODE_BUFFER);
if (!asset) {
__android_log_print(ANDROID_LOG_FATAL, "sherpa-onnx",
"Read binary file: Load %s failed", filename.c_str());
exit(-1);
}
auto p = reinterpret_cast<const char *>(AAsset_getBuffer(asset));
size_t asset_length = AAsset_getLength(asset);
std::vector<char> buffer(p, p + asset_length);
AAsset_close(asset);
return buffer;
}
#endif
#if __OHOS__
std::vector<char> ReadFile(NativeResourceManager *mgr,
const std::string &filename) {
std::unique_ptr<RawFile, decltype(&OH_ResourceManager_CloseRawFile)> fp(
OH_ResourceManager_OpenRawFile(mgr, filename.c_str()),
OH_ResourceManager_CloseRawFile);
if (!fp) {
std::ostringstream os;
os << "Read file '" << filename << "' failed.";
SHERPA_ONNX_LOGE("%s", os.str().c_str());
return {};
}
auto len = static_cast<int32_t>(OH_ResourceManager_GetRawFileSize(fp.get()));
std::vector<char> buffer(len);
int32_t n = OH_ResourceManager_ReadRawFile(fp.get(), buffer.data(), len);
if (n != len) {
std::ostringstream os;
os << "Read file '" << filename << "' failed. Number of bytes read: " << n
<< ". Expected bytes to read: " << len;
SHERPA_ONNX_LOGE("%s", os.str().c_str());
return {};
}
return buffer;
}
#endif
} // namespace sherpa_onnx