C++ PR_sscanf函数代码示例

int
main(int argc, char* argv[])
{
    if (test_common_init(&argc, &argv) != 0)
        return -1;

    nsresult rv;

    if (argc < 4) {
        printf("usage: %s <file-to-read> <start-offset> <read-length>\n", argv[0]);
        return -1;
    }
    char* fileName = argv[1];
    int64_t offset, length;
    int err = PR_sscanf(argv[2], "%lld", &offset);
    if (err == -1) {
      printf("Start offset must be an integer!\n");
      return 1;
    }
    err = PR_sscanf(argv[3], "%lld", &length);
    if (err == -1) {
      printf("Length must be an integer!\n");
      return 1;
    }

    {
        nsCOMPtr<nsIServiceManager> servMan;
        NS_InitXPCOM2(getter_AddRefs(servMan), nullptr, nullptr);
        nsCOMPtr<nsIComponentRegistrar> registrar = do_QueryInterface(servMan);
        NS_ASSERTION(registrar, "Null nsIComponentRegistrar");
        if (registrar)
            registrar->AutoRegister(nullptr);

#if defined(PR_LOGGING)
        gTestLog = PR_NewLogModule("Test");
#endif

        nsCOMPtr<nsIFile> file;
        rv = NS_NewNativeLocalFile(nsDependentCString(fileName), false, getter_AddRefs(file));
        if (NS_FAILED(rv)) return rv;

        rv = RunTest(file, offset, length);
        NS_ASSERTION(NS_SUCCEEDED(rv), "RunTest failed");

        // give background threads a chance to finish whatever work they may
        // be doing.
        PR_Sleep(PR_SecondsToInterval(1));
    } // this scopes the nsCOMPtrs
    // no nsCOMPtrs are allowed to be alive when you call NS_ShutdownXPCOM
    rv = NS_ShutdownXPCOM(nullptr);
    NS_ASSERTION(NS_SUCCEEDED(rv), "NS_ShutdownXPCOM failed");
    return NS_OK;
}

NS_IMETHODIMP sbDatetimePropertyInfo::MakeSearchable(const nsAString & aValue, nsAString & _retval)
{
  nsresult rv;
  PRInt64 value = 0;
  NS_ConvertUTF16toUTF8 narrow(aValue);

  _retval = aValue;
  _retval.StripWhitespace();

  sbSimpleAutoLock lock(mMinMaxDateTimeLock);

  if(PR_sscanf(narrow.get(), gsFmtRadix10, &value) != 1) {
    _retval = EmptyString();
    return NS_ERROR_INVALID_ARG;
  }

  char out[32] = {0};
  if(PR_snprintf(out, 32, gsSortFmtRadix10, value) == (PRUint32)-1) {
    rv = NS_ERROR_FAILURE;
    _retval = EmptyString();
  }
  else {
    NS_ConvertUTF8toUTF16 wide(out);
    rv = NS_OK;
    _retval = wide;
  }

  return rv;
}

int32_t
nsAString::ToInteger(nsresult *aErrorCode, uint32_t aRadix) const
{
  NS_ConvertUTF16toUTF8 narrow(*this);

  const char *fmt;
  switch (aRadix) {
  case 10:
    fmt = "%i";
    break;

  case 16:
    fmt = "%x";
    break;

  default:
    NS_ERROR("Unrecognized radix!");
    *aErrorCode = NS_ERROR_INVALID_ARG;
    return 0;
  }

  int32_t result = 0;
  if (PR_sscanf(narrow.get(), fmt, &result) == 1)
    *aErrorCode = NS_OK;
  else
    *aErrorCode = NS_ERROR_FAILURE;

  return result;
}

int64_t
nsACString::ToInteger64(nsresult *aErrorCode, uint32_t aRadix) const
{
  const char *fmt;
  switch (aRadix) {
  case 10:
    fmt = "%lli";
    break;

  case 16:
    fmt = "%llx";
    break;

  default:
    NS_ERROR("Unrecognized radix!");
    *aErrorCode = NS_ERROR_INVALID_ARG;
    return 0;
  }

  int64_t result = 0;
  if (PR_sscanf(nsCString(*this).get(), fmt, &result) == 1)
    *aErrorCode = NS_OK;
  else
    *aErrorCode = NS_ERROR_FAILURE;

  return result;
}

/**
 * Reads one table of results from the response.  Leaves begin pointing at the
 * next table.
 */
nsresult
nsUrlClassifierHashCompleterRequest::HandleTable(nsACString::const_iterator& begin,
                                                 const nsACString::const_iterator& end)
{
  nsACString::const_iterator iter;
  iter = begin;
  if (!FindCharInReadable(':', iter, end)) {
    // No table line.
    NS_WARNING("Received badly-formatted gethash response.");
    return NS_ERROR_FAILURE;
  }

  const nsCSubstring& tableName = Substring(begin, iter);
  iter++;
  begin = iter;

  if (!FindCharInReadable('\n', iter, end)) {
    // Unterminated header line.
    NS_WARNING("Received badly-formatted gethash response.");
    return NS_ERROR_FAILURE;
  }

  const nsCSubstring& remaining = Substring(begin, iter);
  iter++;
  begin = iter;

  PRUint32 chunkId;
  PRInt32 size;
  if (PR_sscanf(PromiseFlatCString(remaining).get(),
                "%u:%d", &chunkId, &size) != 2) {
    NS_WARNING("Received badly-formatted gethash response.");
    return NS_ERROR_FAILURE;
  }

  if (size % COMPLETE_LENGTH != 0) {
    NS_WARNING("Unexpected gethash response length");
    return NS_ERROR_FAILURE;
  }

  // begin now refers to the hash data.

  if (begin.size_forward() < size) {
    NS_WARNING("Response does not match the expected response length.");
    return NS_ERROR_FAILURE;
  }

  for (PRInt32 i = 0; i < (size / COMPLETE_LENGTH); i++) {
    // Read the complete hash.
    iter.advance(COMPLETE_LENGTH);

    nsresult rv = HandleItem(Substring(begin, iter), tableName, chunkId);
    NS_ENSURE_SUCCESS(rv, rv);

    begin = iter;
  }

  // begin now points at the end of the hash data.

  return NS_OK;
}

static PRUint32 ParseVersion(const char *versionStr)
{
  PRUint16 major, minor;
  if (PR_sscanf(versionStr, "%hu.%hu", &major, &minor) != 2) {
    NS_WARNING("invalid version string");
    return 0;
  }

  return PRUint32(major) << 16 | PRUint32(minor);
}

nsresult
mozSqlResultODBC::BuildRows()
{
  while (SQL_SUCCEEDED(SQLFetch(mResult))) {
    nsCOMPtr<nsIRDFResource> resource;
    nsresult rv = gRDFService->GetAnonymousResource(getter_AddRefs(resource));
    if (NS_FAILED(rv)) return rv;

    Row* row = Row::Create(mAllocator, resource, mColumnInfo);

    for (PRInt32 j = 0; j < mColumnInfo.Count(); j++) {
      SQLINTEGER indicator;
      SQLCHAR buf[512];
      if(SQL_SUCCEEDED(SQLGetData(mResult, j+1, SQL_C_TCHAR, buf, sizeof(buf), &indicator)) && indicator != SQL_NULL_DATA) {
        char* value = (char*)buf;
        Cell* cell = row->mCells[j];
        cell->SetNull(PR_FALSE);
        PRInt32 type = cell->GetType();
        if (type == mozISqlResult::TYPE_STRING)
          cell->SetString(ToNewUnicode(nsDependentCString(value)));
        else if (type == mozISqlResult::TYPE_INT)
          PR_sscanf(value, "%d", &cell->mInt);
        else if (type == mozISqlResult::TYPE_FLOAT)
          PR_sscanf(value, "%f", &cell->mFloat);
        else if (type == mozISqlResult::TYPE_DECIMAL)
          PR_sscanf(value, "%f", &cell->mFloat);
        else if (type == mozISqlResult::TYPE_DATE ||
                 type == mozISqlResult::TYPE_TIME ||
                 type == mozISqlResult::TYPE_DATETIME)
          PR_ParseTimeString(value, PR_FALSE, &cell->mDate);
        else if (type == mozISqlResult::TYPE_BOOL)
          cell->mBool = !strcmp(value, "t");

      }
    }

    mRows.AppendElement(row);
    nsVoidKey key(resource);
    mSources.Put(&key, row);
  }

  return NS_OK;
}

NS_IMETHODIMP
nsInstallVersion::Init(const nsString& version)
{
    mMajor = mMinor = mRelease = mBuild = 0;

    // nsString is a flat string
    if (PR_sscanf(NS_ConvertUTF16toUTF8(version).get(),"%d.%d.%d.%d",&mMajor,&mMinor,&mRelease,&mBuild) < 1)
        return NS_ERROR_UNEXPECTED;

    return NS_OK;
}

void
nsUrlClassifierUtils::CanonicalNum(const nsACString& num,
                                   uint32_t bytes,
                                   bool allowOctal,
                                   nsACString& _retval)
{
  _retval.Truncate();

  if (num.Length() < 1) {
    return;
  }

  uint32_t val;
  if (allowOctal && IsOctal(num)) {
    if (PR_sscanf(PromiseFlatCString(num).get(), "%o", &val) != 1) {
      return;
    }
  } else if (IsDecimal(num)) {
    if (PR_sscanf(PromiseFlatCString(num).get(), "%u", &val) != 1) {
      return;
    }
  } else if (IsHex(num)) {
  if (PR_sscanf(PromiseFlatCString(num).get(), num[1] == 'X' ? "0X%x" : "0x%x",
                &val) != 1) {
      return;
    }
  } else {
    return;
  }

  while (bytes--) {
    char buf[20];
    PR_snprintf(buf, sizeof(buf), "%u", val & 0xff);
    if (_retval.IsEmpty()) {
      _retval.Assign(buf);
    } else {
      _retval = nsDependentCString(buf) + NS_LITERAL_CSTRING(".") + _retval;
    }
    val >>= 8;
  }
}

nsresult
mozSqlResultMysql::BuildRows()
{
  MYSQL_ROW resultrow;
  while ((resultrow = mysql_fetch_row(mResult))){
    nsCOMPtr<nsIRDFResource> resource;
    nsresult rv = gRDFService->GetAnonymousResource(getter_AddRefs(resource));
    if (NS_FAILED(rv)) return rv;

    Row* row = Row::Create(mAllocator, resource, mColumnInfo);

    for (PRInt32 j = 0; j < mColumnInfo.Count(); j++) {
      char* value = resultrow[j];
      if (value){
        Cell* cell = row->mCells[j];
        cell->SetNull(PR_FALSE);
        PRInt32 type = cell->GetType();
        if (type == mozISqlResult::TYPE_STRING)
          cell->SetString(UTF8ToNewUnicode(nsDependentCString(value)));
        else if (type == mozISqlResult::TYPE_INT)
          PR_sscanf(value, "%d", &cell->mInt);
        else if (type == mozISqlResult::TYPE_FLOAT)
          PR_sscanf(value, "%f", &cell->mFloat);
        else if (type == mozISqlResult::TYPE_DECIMAL)
          PR_sscanf(value, "%f", &cell->mFloat);
        else if (type == mozISqlResult::TYPE_DATE ||
                 type == mozISqlResult::TYPE_TIME ||
                 type == mozISqlResult::TYPE_DATETIME)
          PR_ParseTimeString(value, PR_FALSE, &cell->mDate);
        else if (type == mozISqlResult::TYPE_BOOL)
          cell->mBool = !strcmp(value, "t");
      }
    }

    mRows.AppendElement(row);
    nsVoidKey key(resource);
    mSources.Put(&key, row);
  }

  return NS_OK;
}

nsresult
SdpHelper::GetComponent(const std::string& candidate, size_t* component)
{
  unsigned int temp;
  int32_t result = PR_sscanf(candidate.c_str(), "%*s %u", &temp);
  if (result == 1) {
    *component = temp;
    return NS_OK;
  }
  SDP_SET_ERROR("Malformed ICE candidate: " << candidate);
  return NS_ERROR_INVALID_ARG;
}

/* static */ bool
LookupCache::IsCanonicalizedIP(const nsACString& aHost)
{
  // The canonicalization process will have left IP addresses in dotted
  // decimal with no surprises.
  uint32_t i1, i2, i3, i4;
  char c;
  if (PR_sscanf(PromiseFlatCString(aHost).get(), "%u.%u.%u.%u%c",
                &i1, &i2, &i3, &i4, &c) == 4) {
    return (i1 <= 0xFF && i2 <= 0xFF && i3 <= 0xFF && i4 <= 0xFF);
  }

  return false;
}

char * get_post_assertion_data(Session *sn, Request *rq, char *url)
{
    int i = 0;
    char *body = NULL;
    int cl = 0;
    char *cl_str = NULL;

    /**
    * content length and body
    *
    * note: memory allocated in here should be released by
    * other function such as: "policy_unregister_post"
    */

    request_header("content-length", &cl_str, sn, rq);
    if(cl_str == NULL)
	    cl_str = pblock_findval("content-length", rq->headers);
    if(cl_str == NULL)
	    return body;
    if(PR_sscanf(cl_str, "%ld", &cl) == 1) {
        body =  (char *)malloc(cl + 1);
	if(body != NULL){
	    for (i = 0; i < cl; i++) {
	        int ch = netbuf_getc(sn->inbuf);
		if (ch==IO_ERROR || ch == IO_EOF) {
		    break;
	 	}	
		body[i] = ch;
	    }  

	    body[i] = '\0';
	}
    } else {
        am_web_log_error("Error reading POST content body");
    }

    am_web_log_max_debug("Read POST content body : %s", body);


    /**
    * need to reset content length before redirect, 
    * otherwise, web server will wait for serveral minutes
    * for non existant data
    */
    param_free(pblock_remove("content-length", rq->headers));
    pblock_nvinsert("content-length", "0", rq->headers);
    return body;

}

PRStatus TimelineInit(void)
{
    char *timeStr;
    char *fileName;
    PRInt32 secs, msecs;
    PRFileDesc *fd;
    PRInt64 tmp1, tmp2;

    PRStatus status = PR_NewThreadPrivateIndex( &gTLSIndex, ThreadDestruct );
    NS_WARN_IF_FALSE(status==0, "TimelineService could not allocate TLS storage.");

    timeStr = PR_GetEnv("NS_TIMELINE_INIT_TIME");
#ifdef XP_MAC    
    initInterval = PR_IntervalNow();
#endif
    // NS_TIMELINE_INIT_TIME only makes sense for the main thread, so if it
    // exists, set it there.  If not, let normal thread management code take
    // care of setting the init time.
    if (timeStr != NULL && 2 == PR_sscanf(timeStr, "%d.%d", &secs, &msecs)) {
        PRTime &initTime = GetThisThreadData()->initTime;
        LL_MUL(tmp1, (PRInt64)secs, 1000000);
        LL_MUL(tmp2, (PRInt64)msecs, 1000);
        LL_ADD(initTime, tmp1, tmp2);
#ifdef XP_MAC
        initInterval -= PR_MicrosecondsToInterval(
            (PRUint32)(PR_Now() - initTime));
#endif
    }
    // Get the log file.
#ifdef XP_MAC
    fileName = "timeline.txt";
#else
    fileName = PR_GetEnv("NS_TIMELINE_LOG_FILE");
#endif
    if (fileName != NULL
        && (fd = PR_Open(fileName, PR_WRONLY | PR_CREATE_FILE | PR_TRUNCATE,
                         0666)) != NULL) {
        timelineFD = fd;
        PR_fprintf(fd,
                   "NOTE: due to asynchrony, the indentation that you see does"
                   " not necessarily correspond to nesting in the code.\n\n");
    }

    // Runtime disable of timeline
    if (PR_GetEnv("NS_TIMELINE_ENABLE"))
        gTimelineDisabled = PR_FALSE;
    return PR_SUCCESS;
}

NSS_IMPLEMENT CK_VERSION
nss_dbm_db_get_format_version
(
  nss_dbm_db_t *db
)
{
  CK_VERSION rv;
  DBT k, v;
  int dbrv;
  char buffer[64];

  rv.major = rv.minor = 0;

  k.data = PREFIX_METADATA "FormatVersion";
  k.size = nssUTF8_Size((NSSUTF8 *)k.data, (PRStatus *)NULL);
  (void)memset(&v, 0, sizeof(v));

  /* Locked region */ 
  {
    if( CKR_OK != NSSCKFWMutex_Lock(db->crustylock) ) {
      return rv;
    }

    dbrv = db->db->get(db->db, &k, &v, 0);
    if( dbrv == 0 ) {
      CK_ULONG major = 0, minor = 0;
      (void)PR_sscanf(v.data, "%ld.%ld", &major, &minor);
      rv.major = major;
      rv.minor = minor;
    } else if( dbrv > 0 ) {
      (void)PR_snprintf(buffer, sizeof(buffer), "%ld.%ld", nss_dbm_db_format_version.major,
                        nss_dbm_db_format_version.minor);
      v.data = buffer;
      v.size = nssUTF8_Size((NSSUTF8 *)v.data, (PRStatus *)NULL);
      dbrv = db->db->put(db->db, &k, &v, 0);
      (void)db->db->sync(db->db, 0);
      rv = nss_dbm_db_format_version;
    } else {
      /* No error return.. */
      ;
    }

    (void)NSSCKFWMutex_Unlock(db->crustylock);
  }

  return rv;
}