86 lines
2.6 KiB
C++
86 lines
2.6 KiB
C++
/*
|
|
* This is the source code of tgnet library v. 1.0
|
|
* It is licensed under GNU GPL v. 2 or later.
|
|
* You should have received a copy of the license in this archive (see LICENSE).
|
|
*
|
|
* Copyright Nikolai Kudashov, 2015.
|
|
*/
|
|
|
|
#include "Config.h"
|
|
#include "ConnectionsManager.h"
|
|
#include "FileLog.h"
|
|
#include "BuffersStorage.h"
|
|
|
|
Config::Config(std::string fileName) {
|
|
configPath = ConnectionsManager::getInstance().currentConfigPath + fileName;
|
|
backupPath = configPath + ".bak";
|
|
FILE *backup = fopen(backupPath.c_str(), "rb");
|
|
if (backup != nullptr) {
|
|
remove(configPath.c_str());
|
|
rename(backupPath.c_str(), configPath.c_str());
|
|
fclose(backup);
|
|
}
|
|
}
|
|
|
|
NativeByteBuffer *Config::readConfig() {
|
|
NativeByteBuffer *buffer = nullptr;
|
|
FILE *file = fopen(configPath.c_str(), "rb");
|
|
if (file != nullptr) {
|
|
fseek(file, 0, SEEK_END);
|
|
long fileSize = ftell(file);
|
|
fseek(file, 0, SEEK_SET);
|
|
uint32_t size = 0;
|
|
int bytesRead = fread(&size, sizeof(uint32_t), 1, file);
|
|
DEBUG_D("Config(%p, %s) load, size = %u", this, configPath.c_str(), size);
|
|
if (bytesRead > 0 && size > 0 && (int32_t) size < fileSize) {
|
|
buffer = BuffersStorage::getInstance().getFreeBuffer(size);
|
|
if (fread(buffer->bytes(), sizeof(uint8_t), size, file) != size) {
|
|
buffer->reuse();
|
|
buffer = nullptr;
|
|
}
|
|
}
|
|
fclose(file);
|
|
}
|
|
return buffer;
|
|
}
|
|
|
|
void Config::writeConfig(NativeByteBuffer *buffer) {
|
|
FILE *file = fopen(configPath.c_str(), "rb");
|
|
FILE *backup = fopen(backupPath.c_str(), "rb");
|
|
bool error = false;
|
|
if (file != nullptr) {
|
|
if (backup == nullptr) {
|
|
fclose(file);
|
|
if (rename(configPath.c_str(), backupPath.c_str()) != 0) {
|
|
DEBUG_E("Config(%p) unable to rename file %s to backup file %s", this, configPath.c_str(), backupPath.c_str());
|
|
error = true;
|
|
}
|
|
} else {
|
|
fclose(file);
|
|
fclose(backup);
|
|
remove(configPath.c_str());
|
|
}
|
|
}
|
|
if (error) {
|
|
return;
|
|
}
|
|
file = fopen(configPath.c_str(), "wb");
|
|
if (file == nullptr) {
|
|
return;
|
|
}
|
|
uint32_t size = buffer->position();
|
|
if (fwrite(&size, sizeof(uint32_t), 1, file) == 1) {
|
|
if (fwrite(buffer->bytes(), sizeof(uint8_t), size, file) != size) {
|
|
error = true;
|
|
}
|
|
} else {
|
|
error = true;
|
|
}
|
|
fclose(file);
|
|
if (error) {
|
|
remove(configPath.c_str());
|
|
} else {
|
|
remove(backupPath.c_str());
|
|
}
|
|
}
|