SLIOWriterLocalStorage Class Reference

SLIOStream implementation for writing to browser local storage. More...

#include <SLIOLocalStorage.h>

Inheritance diagram for SLIOWriterLocalStorage:

Public Member Functions
	SLIOWriterLocalStorage (std::string path)
void	flush ()
Public Member Functions inherited from SLIOWriterMemory
	SLIOWriterMemory (std::string path)
size_t	write (const void *buffer, size_t size)
size_t	tell ()
bool	seek (size_t offset, Origin origin)
void	flush ()
Public Member Functions inherited from SLIOStream
virtual	~SLIOStream ()=default
virtual size_t	read (void *buffer, size_t size)
virtual size_t	size ()

Additional Inherited Members
Public Types inherited from SLIOStream
enum	Origin { IOO_beg , IOO_cur , IOO_end }
Protected Attributes inherited from SLIOWriterMemory
std::string	_path
size_t	_position

Detailed Description

SLIOStream implementation for writing to browser local storage.

When calling flush, the memory is written from memory to local storage using the JavaScript API provided by the web browser.

Definition at line 41 of file SLIOLocalStorage.h.

Constructor & Destructor Documentation

SLIOWriterLocalStorage()

SLIOWriterLocalStorage::SLIOWriterLocalStorage

(

std::string

path

)

Definition at line 56 of file SLIOLocalStorage.cpp.

  : SLIOWriterMemory(path)
{
}

Member Function Documentation

flush()

void SLIOWriterLocalStorage::flush ( )

virtual

Reimplemented from SLIOStream.

Definition at line 61 of file SLIOLocalStorage.cpp.

{
    std::vector<char>& buffer = SLIOMemory::get(_path);
    const char*        data   = buffer.data();
    size_t             length = buffer.size();
 
    // clang-format off
    MAIN_THREAD_EM_ASM({
        let path = UTF8ToString($0);
        let section = HEAPU8.subarray($1, $1 + $2);
 
        let array = new Uint8Array(section);
        let binary = "";
        for(let i = 0; i < array.byteLength; i++)
            binary += String.fromCharCode(array[i]);
 
        let key = "SL:" + path;
        localStorage.setItem(key, btoa(binary));
    }, _path.c_str(), data, length);
    // clang-format on
}

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The documentation for this class was generated from the following files:

• SLIOLocalStorage.h
• SLIOLocalStorage.cpp