/// <summary> Deserializes an item's (field/global param/...) value </summary>
/// <param name="itemVal">item's value</param>
/// <param name="itemAttr">item's attribute</param>
/// <param name="itemLen">item's length</param>
/// <param name="useHex">indicates whether the itemVal is in Hex or Base64</param>
/// <param name="cellAttr">cell's attribute - relevant only if 'itemAttr' is vector</param>
/// <param name="parsedLen">out parameter. Returns the length of itemVal parsed</param>
/// <returns></returns>
public static String deSerializeItemVal(String itemVal, StorageAttribute itemAttr, int itemLen, bool useHex, StorageAttribute cellAttr, out int parsedLen)
{
String val = null;
int idx = 0;
int len, endIdx;
StringBuilder suffixBuf = null;
String tmp = null;
if (itemAttr == StorageAttribute.ALPHA ||
itemAttr == StorageAttribute.UNICODE ||
itemAttr == StorageAttribute.BLOB ||
itemAttr == StorageAttribute.BLOB_VECTOR ||
itemAttr == StorageAttribute.DOTNET)
{
// first 4 characters are the length of the string (hex number)
endIdx = idx + 4;
tmp = itemVal.Substring(idx, (endIdx) - (idx));
len = Convert.ToInt32(tmp, 16);
idx = endIdx;
}
else if (itemAttr == StorageAttribute.BOOLEAN)
{
len = 1;
}
else
{
int significantNumSize = Manager.Environment.GetSignificantNumSize();
if (useHex)
{
len = significantNumSize * 2;
}
else
{
//if working in base64
len = (((significantNumSize + 2) / 3) * 4);
}
}
// Oops, did we bumped into a spanned record (We identify it when the high-most bit is on)?
if ((len & 0x8000) > 0)
{
suffixBuf = new StringBuilder();
len = (len & 0x7FFF);
if (itemAttr == StorageAttribute.BLOB || itemAttr == StorageAttribute.BLOB_VECTOR ||
itemAttr == StorageAttribute.DOTNET)
{
if (useHex)
{
len *= 2;
}
else
{
len = (((len + 2) / 3) * 4);
}
}
parsedLen = getSpannedField(itemVal, len, idx, itemAttr, suffixBuf, useHex);
val = suffixBuf.ToString();
endIdx = idx + parsedLen;
}
else
{
if (itemAttr == StorageAttribute.BLOB ||
itemAttr == StorageAttribute.BLOB_VECTOR ||
itemAttr == StorageAttribute.DOTNET)
{
if (useHex)
{
len *= 2;
}
else
{
len = (((len + 2) / 3) * 4);
}
}
endIdx = idx + len;
if (endIdx > itemVal.Length)
{
throw new ApplicationException("in Record.fillFieldsData() data string too short:\n" + itemVal);
}
if (UtilStrByteMode.isLocaleDefLangDBCS() && itemAttr == StorageAttribute.BLOB_VECTOR)
{
val = getString(itemVal.Substring(idx, (endIdx) - (idx)), itemAttr, useHex, (cellAttr == StorageAttribute.ALPHA));
}
else
{
val = getString(itemVal.Substring(idx, (endIdx) - (idx)), itemAttr, useHex);
}
}
idx = endIdx;
if (itemAttr == StorageAttribute.ALPHA || itemAttr == StorageAttribute.UNICODE)
{
len = itemLen;
val = StrUtil.padStr(val, len);
if (itemAttr == StorageAttribute.ALPHA && UtilStrByteMode.isLocaleDefLangDBCS())
{
val = UtilStrByteMode.leftB(val, len);
}
}
parsedLen = endIdx;
return(val);
}
