Binary Built-in File Resource

Sometimes we want to use a file resource inside the binary just like the "*.qrc" in Qt.

GSLAM provides a tiny and efficient way to access such functional.

• Firstly, generate the resource *.cpp file with command "gslam resource":

gslam resource -map {\"inside_name.png\":\"folder/name.png\",\"hello.txt\":\"hello.txt\"} -cpp resource.cpp

Warning

'\' is essential to prevent '"' gone.

This command will package file "folder/name.png" and "hello.txt" to the resource cpp file "resource.cpp".

• Secondly, now please compile the resource cpp along with the binary using the resource. The resouce can be accessed with the following code:

#include <GSLAM/core/FileResource.h>

int main(int argc,char** argv)
{
    std::istream& ist=GSLAM::FileResource::getIStream("hello.txt");
    // now please use ist just like ifstream

    // also can access the file with buffer
    SvarBuffer buffer=GSLAM::FileResource::getBuffer("hello.txt");
    std::cerr<<"size is:"<<buffer.length()
    <<"context is:"<<buffer.hex();

    return 0;
}