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#pragma once
#include "nx/nxstring.h"
#include "nx/nxuri.h"
#include "foundation/error.h"
template <nx_charset_t charset>
class AutoCharNX
{
public:
AutoCharNX()
{
Init();
}
AutoCharNX(size_t bytes)
{
Init();
ptr = (char *)malloc(bytes);
malloc_size = bytes;
}
AutoCharNX(nx_string_t string)
{
Init();
Set(string);
}
AutoCharNX(nx_uri_t filename)
{
Init();
Set(filename);
}
~AutoCharNX()
{
if (owned)
free(ptr);
if (reference_string)
NXStringRelease(reference_string);
}
int Set(nx_string_t string)
{
if (reference_string == string)
return NErr_Success;
if (reference_string)
NXStringRelease(reference_string);
reference_string=0;
size_t byte_count=0;
int ret = NXStringGetBytesSize(&byte_count, string, charset, nx_string_get_bytes_size_null_terminate);
if(ret == NErr_DirectPointer)
{
if (owned)
{
free(ptr);
ptr=0;
length=0;
malloc_size=0;
}
ret = NXStringGetBytesDirect((const void **)&ptr, &length, string, charset, nx_string_get_bytes_size_null_terminate);
reference_string = NXStringRetain(string);
owned=false;
}
else if (ret == NErr_Success)
{
if (owned)
{
if (byte_count > malloc_size)
{
ptr = (char *)realloc(ptr, byte_count);
malloc_size = byte_count;
}
}
else
{
/* not owned. need to allocate */
ptr = (char *)malloc(byte_count);
malloc_size = byte_count;
owned=true;
}
if (ptr)
{
ret = NXStringGetBytes(&length, string, ptr, byte_count, charset, nx_string_get_bytes_size_null_terminate);
}
else
{
return NErr_OutOfMemory;
}
}
else
{
Clear();
}
return ret;
}
int Set(nx_uri_t filename)
{
int ret;
nx_string_t string;
ret = NXURIGetNXString(&string, filename);
if (ret == NErr_Success)
{
ret = Set(string);
NXStringRelease(string);
}
else
{
Clear();
// failed! we need to clean up
}
return ret;
}
operator const char *() const
{
if (length)
return ptr;
else
return 0;
}
/* this one will never return a NULL, always a valid string */
const char *GetValidString() const
{
if (length)
return ptr;
else
return "";
}
/* the Clear function clears the string but doesn't deallocate memory */
void Clear()
{
if (!owned)
ptr=0;
length=0;
if (reference_string)
NXStringRelease(reference_string);
reference_string=0;
}
private:
void Init()
{
ptr=0;
length=0;
owned=false;
reference_string=0;
malloc_size=0;
}
char *ptr;
size_t length;
size_t malloc_size;
bool owned;
nx_string_t reference_string;
};
typedef AutoCharNX<nx_charset_utf8> AutoCharUTF8;
#define AutoCharPrintfUTF8(x) (AutoCharUTF8(x).GetValidString())
class AutoCharNative
{
public:
};
class AutoFilename
{
public:
};
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