/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 "nspr.h"

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifdef _WIN32
#  include <windows.h>
#endif

#define TEST_FILE_NAME "bigfile3.txt"
#ifdef WINCE
#  define TEST_FILE_NAME_FOR_CREATEFILE L"bigfile3.txt"
#else
#  define TEST_FILE_NAME_FOR_CREATEFILE TEST_FILE_NAME
#endif

#define MESSAGE "Hello world!"
#define MESSAGE_SIZE 13

int main(int argc, char** argv) {
  PRFileDesc* fd;
  PRInt64 offset, position;
  PRInt32 nbytes;
  char buf[MESSAGE_SIZE];
#ifdef _WIN32
  HANDLE hFile;
  LARGE_INTEGER li;
#endif /* _WIN32 */

  LL_I2L(offset, 1);
  LL_SHL(offset, offset, 32);

#ifdef _WIN32
  hFile = CreateFile(TEST_FILE_NAME_FOR_CREATEFILE, GENERIC_WRITE, 0, NULL,
                     CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
  if (hFile == INVALID_HANDLE_VALUE) {
    fprintf(stderr, "CreateFile failed\n");
    exit(1);
  }
  li.QuadPart = offset;
  li.LowPart = SetFilePointer(hFile, li.LowPart, &li.HighPart, FILE_BEGIN);
  if (li.LowPart == 0xFFFFFFFF && GetLastError() != NO_ERROR) {
    fprintf(stderr, "SetFilePointer failed\n");
    exit(1);
  }
  PR_ASSERT(li.QuadPart == offset);
  strcpy(buf, MESSAGE);
  if (WriteFile(hFile, buf, sizeof(buf), &nbytes, NULL) == 0) {
    fprintf(stderr, "WriteFile failed\n");
    exit(1);
  }
  PR_ASSERT(nbytes == sizeof(buf));
  if (CloseHandle(hFile) == 0) {
    fprintf(stderr, "CloseHandle failed\n");
    exit(1);
  }
#endif /* _WIN32 */

  memset(buf, 0, sizeof(buf));

  fd = PR_Open(TEST_FILE_NAME, PR_RDONLY, 0666);
  if (fd == NULL) {
    fprintf(stderr, "PR_Open failed\n");
    exit(1);
  }
  position = PR_Seek64(fd, offset, PR_SEEK_SET);
  if (!LL_GE_ZERO(position)) {
    fprintf(stderr, "PR_Seek64 failed\n");
    exit(1);
  }
  PR_ASSERT(LL_EQ(position, offset));
  nbytes = PR_Read(fd, buf, sizeof(buf));
  if (nbytes != sizeof(buf)) {
    fprintf(stderr, "PR_Read failed\n");
    exit(1);
  }
  if (strcmp(buf, MESSAGE)) {
    fprintf(stderr, "corrupt data:$%s$\n", buf);
    exit(1);
  }
  if (PR_Close(fd) == PR_FAILURE) {
    fprintf(stderr, "PR_Close failed\n");
    exit(1);
  }

  if (PR_Delete(TEST_FILE_NAME) == PR_FAILURE) {
    fprintf(stderr, "PR_Delete failed\n");
    exit(1);
  }

  printf("PASS\n");
  return 0;
}
