зеркало из https://github.com/mozilla/pjs.git
111 строки
2.2 KiB
C++
111 строки
2.2 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#include <stdlib.h>
|
|
#include "nsIStorageStream.h"
|
|
#include "nsIInputStream.h"
|
|
#include "nsIOutputStream.h"
|
|
#include "nsCOMPtr.h"
|
|
|
|
int main()
|
|
{
|
|
char kData[4096];
|
|
memset(kData, 0, sizeof(kData));
|
|
|
|
nsresult rv;
|
|
nsCOMPtr<nsIStorageStream> stor;
|
|
|
|
rv = NS_NewStorageStream(4096, PR_UINT32_MAX, getter_AddRefs(stor));
|
|
if (NS_FAILED(rv))
|
|
return -1;
|
|
|
|
nsCOMPtr<nsIOutputStream> out;
|
|
rv = stor->GetOutputStream(0, getter_AddRefs(out));
|
|
if (NS_FAILED(rv))
|
|
return -1;
|
|
|
|
PRUint32 n;
|
|
|
|
rv = out->Write(kData, sizeof(kData), &n);
|
|
if (NS_FAILED(rv))
|
|
return -1;
|
|
|
|
rv = out->Write(kData, sizeof(kData), &n);
|
|
if (NS_FAILED(rv))
|
|
return -1;
|
|
|
|
rv = out->Close();
|
|
if (NS_FAILED(rv))
|
|
return -1;
|
|
|
|
out = nsnull;
|
|
|
|
nsCOMPtr<nsIInputStream> in;
|
|
rv = stor->NewInputStream(0, getter_AddRefs(in));
|
|
if (NS_FAILED(rv))
|
|
return -1;
|
|
|
|
char buf[4096];
|
|
|
|
// consume contents of input stream
|
|
do {
|
|
rv = in->Read(buf, sizeof(buf), &n);
|
|
if (NS_FAILED(rv))
|
|
return -1;
|
|
} while (n != 0);
|
|
|
|
rv = in->Close();
|
|
if (NS_FAILED(rv))
|
|
return -1;
|
|
in = nsnull;
|
|
|
|
// now, write 3 more full 4k segments + 11 bytes, starting at 8192
|
|
// total written equals 20491 bytes
|
|
|
|
rv = stor->GetOutputStream(8192, getter_AddRefs(out));
|
|
if (NS_FAILED(rv))
|
|
return -1;
|
|
|
|
rv = out->Write(kData, sizeof(kData), &n);
|
|
if (NS_FAILED(rv))
|
|
return -1;
|
|
|
|
rv = out->Write(kData, sizeof(kData), &n);
|
|
if (NS_FAILED(rv))
|
|
return -1;
|
|
|
|
rv = out->Write(kData, sizeof(kData), &n);
|
|
if (NS_FAILED(rv))
|
|
return -1;
|
|
|
|
rv = out->Write(kData, 11, &n);
|
|
if (NS_FAILED(rv))
|
|
return -1;
|
|
|
|
rv = out->Close();
|
|
if (NS_FAILED(rv))
|
|
return -1;
|
|
|
|
out = nsnull;
|
|
|
|
// now, read all
|
|
rv = stor->NewInputStream(0, getter_AddRefs(in));
|
|
if (NS_FAILED(rv))
|
|
return -1;
|
|
|
|
// consume contents of input stream
|
|
do {
|
|
rv = in->Read(buf, sizeof(buf), &n);
|
|
if (NS_FAILED(rv))
|
|
return -1;
|
|
} while (n != 0);
|
|
|
|
rv = in->Close();
|
|
if (NS_FAILED(rv))
|
|
return -1;
|
|
in = nsnull;
|
|
|
|
return 0;
|
|
}
|