FileWriter_Demo.cpp

Create a copy of a text file, character-by-character using a second buffer. The second buffer (writeBuffer) does increase the complexity by five lines of code, but it drastically increases the performance as well.

cmake_minimum_required(VERSION 3.12)
find_package(PropWare REQUIRED)
 
set(BOARD activityboard)
 
project(FileWriter_Demo)
 
create_simple_executable(${PROJECT_NAME} FileWriter_Demo.cpp)

 
#include <PropWare/hmi/output/printer.h>
#include <PropWare/memory/sd.h>
#include <PropWare/filesystem/fat/fatfs.h>
#include <PropWare/filesystem/fat/fatfilewriter.h>
#include <PropWare/filesystem/fat/fatfilereader.h>
 
using PropWare::SD;
using PropWare::FatFS;
using PropWare::BlockStorage;
using PropWare::FatFileReader;
using PropWare::FatFileWriter;
 
int main() {
    const SD  driver;
    FatFS     filesystem(driver);
 
    uint8_t                writeBufferData[driver.get_sector_size()];
    BlockStorage::MetaData writeMetaData;
    BlockStorage::Buffer   writeBuffer = {
            buf: writeBufferData,
            meta: &writeMetaData
    };
 
    filesystem.mount();
 
    FatFileReader reader(filesystem, "fat_test.txt");
    FatFileWriter writer(filesystem, "new2.txt", writeBuffer);
 
    reader.open();
    writer.open();
 
    while (!reader.eof())
        writer.put_char(reader.get_char());
 
    writer.close();
    reader.close();
    filesystem.unmount();
 
    return 0;
}