private LIST_FILE_RAW_TYPE_INFO CreatRawLink()
{
if (_listRawTypeInfos == null)
{
_listRawTypeInfos = new List <LIST_FILE_RAW_TYPE_INFO>();
try
{
StringBuilder sb = new StringBuilder();
sb.AppendFormat("select * from FileClass where 1 <> 1 ");
RAW_TYPES.ForEach(s => sb.AppendFormat(" or FileType = {0} ", s));
SqliteContext sql = new SqliteContext(Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "FileRawTypeLib.db"));
DataTable dt = sql.FindDataTable(sb.ToString());
IntPtr lastPtr = IntPtr.Zero;
foreach (DataRow dr in dt.Rows)
{
FILE_RAW_TYPE_INFO raw = new FILE_RAW_TYPE_INFO();
raw.FileType = dr["FileExName"].ToSafeString().Replace(";", "_"); //dr["FileTypeName"].ToSafeString();
raw.Size = dr["FileDefaultSize"].ToSafeString().ToSafeInt();
raw.ExtensionName = dr["FileExName"].ToSafeString();
raw.HeadMagic = dr["FileHeadFlag"].ToSafeString();
raw.HeadOffsetBytes = (ushort)dr["FileHeadBeginPos"].ToSafeString().ToSafeInt();
raw.FootMagic = dr["FileEndFlag"].ToSafeString();
raw.FootOffsetBytes = dr["FileEndPOS"].ToSafeString().ToSafeInt();
raw.HeadLen = dr["FileHeadLength"].ToSafeString().ToSafeInt();
raw.FootLen = 0;
LIST_FILE_RAW_TYPE_INFO rawlist = new LIST_FILE_RAW_TYPE_INFO();
rawlist.Check = 1; //0 - 不检查, 1 - 检查
rawlist.Num = 0;
rawlist.rt = raw;
rawlist.next = lastPtr;
int size = Marshal.SizeOf(rawlist);
IntPtr rawptr = Marshal.AllocHGlobal(size);
Marshal.StructureToPtr(rawlist, rawptr, true);
_listRawTypeInfos.Add(rawlist);
lastPtr = rawptr;
}
}
catch (Exception ex)
{
LoggerManagerSingle.Instance.Error("获取Raw文件类型失败！", ex);
}
}
return(_listRawTypeInfos.Count > 0 ? _listRawTypeInfos[_listRawTypeInfos.Count - 1] : new LIST_FILE_RAW_TYPE_INFO());
}
/// <summary>
/// 查询数据库，同时通过正则表达式过滤数据
/// </summary>
/// <param name="file">db文件</param>
/// <param name="sql">SQL</param>
/// <param name="colNames">过滤的列，和regex一一对应</param>
/// <param name="regex">过滤的列对应的正则表达式，和regex一一对应</param>
/// <returns></returns>
public string FindByRegex(string file, string sql, string[] colNames, string[] regex)
{
if (colNames != null || regex != null)
{
return(Find(file, sql));
}
try
{
if (colNames.Length != regex.Length)
{
throw new Exception("the length of columns is not equal the length of regex");
}
//var list = this._Find(file, sql);
if (!System.IO.File.Exists(file))
{
Console.WriteLine(string.Format("文件不存在", file));
return(null);
}
SqliteContext context = new SqliteContext(file);
var dt = context.FindDataTable(sql);
Dictionary <string, Regex> dicRegexes = new Dictionary <string, Regex>();
for (int j = 0; j < colNames.Length; j++)
{
dicRegexes[colNames[j]] = new Regex(regex[j]);
}
for (int i = dt.Rows.Count - 1; i >= 0; i--)
{
if (dicRegexes.Any(r => !r.Value.IsMatch(dt.Rows[i][r.Key].ToString()))) //如果某列值不满足正则匹配，则删除该行数据
{
dt.Rows.RemoveAt(i);
}
}
var list = ToDynamicCollection(dt);
this.Encode(list, string.Empty, string.Empty);
return(JsonConvert.SerializeObject(list));
}
catch (Exception ex)
{
var str = string.Format("SQL查询失败", file, ex.Message);
Console.WriteLine(str);
return(string.Empty);
}
}