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375 lines (329 loc) · 15 KB
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using System;
using System.Collections;
using System.Collections.Generic;
using System.Text;
using System.Data.SqlTypes;
using Microsoft.SqlServer.Server;
using System.Runtime.Serialization;
using System.Data.SqlClient;
using System.Data;
using System.Text.RegularExpressions;
namespace tSQLtCLR
{
[SqlUserDefinedTypeAttribute(Format.UserDefined, MaxByteSize = 1, IsFixedLength = true)]
public struct tSQLtPrivate : INullable, IBinarySerialize
{
private const String NULL_STRING = "!NULL!";
private const int MAX_COLUMN_WIDTH = 155;
public static SqlString Info()
{
return System.Reflection.Assembly.GetExecutingAssembly().GetName().Version.ToString();
}
public static SqlBinary SigningKey()
{
return System.Reflection.Assembly.GetExecutingAssembly().GetName().GetPublicKeyToken();
}
[SqlMethod(DataAccess = DataAccessKind.Read)]
public static SqlString CreateUniqueObjectName()
{
return "tSQLt_tempobject_" + Guid.NewGuid().ToString().Replace("-", "");
}
[SqlMethod(DataAccess = DataAccessKind.Read)]
public static SqlChars TableToString(SqlString TableName, SqlString OrderOption, SqlString ColumnList) {
if (TableName.IsNull) {
throw new Exception("Object name cannot be NULL");
}
if (OrderOption.IsNull)
{
OrderOption = "";
}
if (ColumnList.IsNull)
{
ColumnList = "";
}
TestDatabaseFacade testDbFacade = new TestDatabaseFacade();
String selectStmt = getSqlStatement(ref TableName, ref OrderOption);
SqlDataReader reader = testDbFacade.executeCommand(selectStmt);
List<String[]> results = getTableStringArray(reader, ColumnList);
int numRows = 0;
int[] ColumnLength = new int[results[0].Length];
foreach (String[] rowData in results) {
for (int i = 0; i < rowData.Length; i++) {
ColumnLength[i] = Math.Max(ColumnLength[i], rowData[i].Length);
}
numRows++;
}
for (int i = 0; i < ColumnLength.Length; i++) {
ColumnLength[i] = Math.Min(ColumnLength[i], MAX_COLUMN_WIDTH);
}
int size = 0;
foreach (int i in ColumnLength) {
size += 1 + i;
}
size++;
size *= (numRows + 1);
bool isHeader = true;
StringBuilder output = new StringBuilder(size);
foreach (String[] rowData in results) {
if (!isHeader) {
output.AppendLine();
}
for (int i = 0; i < rowData.Length; i++) {
output.Append("|").Append(PadColumn(TrimToMaxLength(rowData[i]), ColumnLength[i]));
}
output.Append("|");
if (isHeader) {
isHeader = false;
output.AppendLine();
for (int i = 0; i < rowData.Length; i++) {
output.Append("+");
output.Insert(output.Length, "-", ColumnLength[i]);
}
output.Append("+");
}
}
return new SqlChars(output.ToString());
}
[SqlMethod(DataAccess = DataAccessKind.Read)]
public static SqlChars GetAlterStatementWithoutSchemaBinding(SqlString createStatement)
{
var startPosition = GetStartPosition(createStatement);
var regex = new Regex(@"CREATE\s+VIEW(\s*.*?\s*)WITH\s+SCHEMABINDING\s+AS");
var output = regex.Replace(createStatement.ToString(), @"ALTER VIEW$1AS", 1, startPosition);
return new SqlChars(output);
}
private enum GetStartPositionStates
{
Default,
AfterFirstDash,
AfterSecondDash,
AfterSlash,
AfterSlashStar,
AfterStar
}
private static readonly Dictionary<char, bool> Whitespace = new Dictionary<char, bool>() { { ' ', true }, { '\n', true }, { '\r', true }, { '\t', true }, { '\f', true }, { '\v', true } };
private static bool IsWhitespaceChar(char c)
{
return Whitespace.ContainsKey(c);
}
private static int GetStartPosition(SqlString createStatement)
{
var statementCharacters = createStatement.ToString().ToCharArray();
var startPosition = -1;
var state = GetStartPositionStates.Default;
var multiLineCommentNestLevel = 0;
for (var position = 0; position < statementCharacters.Length && startPosition < 0 ; position++)
{
switch (state)
{
case GetStartPositionStates.Default:
if (IsWhitespaceChar(statementCharacters[position]))
{
break;
}
if (statementCharacters[position] == '-')
{
state = GetStartPositionStates.AfterFirstDash;
break;
}
if (statementCharacters[position] == '/')
{
state = GetStartPositionStates.AfterSlash;
break;
}
startPosition = position;
break;
case GetStartPositionStates.AfterFirstDash:
if (statementCharacters[position] == '-')
{
state = GetStartPositionStates.AfterSecondDash;
}
break;
case GetStartPositionStates.AfterSecondDash:
if (statementCharacters[position] == '\r' || statementCharacters[position] == '\n')
{
state = GetStartPositionStates.Default;
}
break;
case GetStartPositionStates.AfterSlash:
if (statementCharacters[position] == '*')
{
state = GetStartPositionStates.AfterSlashStar;
multiLineCommentNestLevel++;
break;
}
if (multiLineCommentNestLevel > 0)
{
state = GetStartPositionStates.AfterSlashStar;
break;
}
throw new Exception("unexpected /");
case GetStartPositionStates.AfterSlashStar:
if (statementCharacters[position] == '*')
{
state = GetStartPositionStates.AfterStar;
}
if (statementCharacters[position] == '/')
{
state = GetStartPositionStates.AfterSlash;
}
break;
case GetStartPositionStates.AfterStar:
if (statementCharacters[position] == '/')
{
multiLineCommentNestLevel--;
if (0 == multiLineCommentNestLevel)
{
state = GetStartPositionStates.Default;
}
else
{
state = GetStartPositionStates.AfterSlashStar;
}
break;
}
state = GetStartPositionStates.AfterSlashStar;
break;
}
}
return startPosition;
}
private static String PadColumn(String input, int length) {
return input + (new StringBuilder().Insert(0, " ", length - input.Length).ToString());
}
private static String TrimToMaxLength(String rowData) {
if (rowData.Length > MAX_COLUMN_WIDTH) {
return rowData.Substring(0, (MAX_COLUMN_WIDTH - 5) / 2) + "<...>" + rowData.Substring(rowData.Length - (MAX_COLUMN_WIDTH - 5) / 2, (MAX_COLUMN_WIDTH - 5) / 2);
} else {
return rowData;
}
}
private static String getSqlStatement(ref SqlString TableName, ref SqlString OrderOption) {
String selectStmt = "SELECT * FROM " + TableName.ToString();
if (OrderOption.ToString().Length > 0) {
selectStmt += " ORDER BY " + OrderOption.ToString();
}
return selectStmt;
}
private static List<String[]> getTableStringArray(SqlDataReader reader, SqlString PrintOnlyColumnNameAliasList) {
DataTable schema = reader.GetSchemaTable();
List<String[]> results = new List<string[]>();
int numCols = schema.Rows.Count;
if (PrintOnlyColumnNameAliasList.ToString().Equals(""))
{
String[] header = new String[numCols];
for (int i = 0; i < numCols; i++)
{
DataRow row = schema.Rows[i];
header[i] = (row["ColumnName"].ToString());
}
results.Add(header);
}
else
{
var colListArray = SplitColumnNameList(ref PrintOnlyColumnNameAliasList);
var unquotedColList = new List<string>();
foreach(var colName in colListArray)
{
if (colName.Length != 0)
{
unquotedColList.Add(colName.Replace("]]", "]"));
}
}
results.Add(unquotedColList.ToArray());
}
while (reader.Read()) {
String[] rowData = new String[numCols];
for (int i = 0; i < reader.FieldCount; i++) {
if (reader.IsDBNull(i)) {
rowData[i] = NULL_STRING;
} else {
SqlDbType dbType = (SqlDbType)schema.Rows[i]["ProviderType"];
switch (dbType) {
case SqlDbType.Date:
rowData[i] = SqlDateToString(reader.GetDateTime(i));
break;
case SqlDbType.SmallDateTime:
rowData[i] = SmallDateTimeToString(reader.GetDateTime(i));
break;
case SqlDbType.DateTime:
rowData[i] = SqlDateTimeToString(reader.GetDateTime(i));
break;
case SqlDbType.DateTime2:
rowData[i] = SqlDateTime2ToString(reader.GetDateTime(i));
break;
case SqlDbType.DateTimeOffset:
rowData[i] = SqlDateTimeOffsetToString(reader.GetDateTimeOffset(i));
break;
case SqlDbType.Decimal:
rowData[i] = reader.GetSqlDecimal(i).ToString();
break;
case SqlDbType.Float:
rowData[i] = reader.GetSqlDouble(i).Value.ToString("0.000000000000000E+0");
break;
case SqlDbType.Timestamp:
case SqlDbType.Image:
case SqlDbType.VarBinary:
rowData[i] = SqlBinaryToString(reader.GetSqlBinary(i));
break;
default:
rowData[i] = reader.GetValue(i).ToString();
break;
}
}
}
results.Add(rowData);
}
return results;
}
private static string[] SplitColumnNameList(ref SqlString ColumnList)
{
var colListArray = Regex.Split("]," + ColumnList.ToString() + ",[", "\\],\\[");
return colListArray;
}
private static string unquote(string columnName)
{
return columnName.Replace("[","").Replace("]","");
}
private static string SqlDateToString(SqlDateTime dtValue) {
return String.Format("{0:yyyy-MM-dd}", dtValue.Value);
}
private static String SqlDateTimeToString(SqlDateTime dtValue) {
return String.Format("{0:yyyy-MM-dd HH:mm:ss.fff}", dtValue.Value);
}
private static String SmallDateTimeToString(SqlDateTime dtValue) {
return String.Format("{0:yyyy-MM-dd HH:mm}", dtValue.Value);
}
private static String SqlDateTime2ToString(DateTime dtValue) {
return String.Format("{0:yyyy-MM-dd HH:mm:ss.fffffff}", new DateTime(dtValue.Ticks));
}
private static String SqlDateTimeOffsetToString(DateTimeOffset dtoValue) {
return String.Format("{0:yyyy-MM-dd HH:mm:ss.fffffff zzz}", dtoValue);
}
private static String SqlBinaryToString(SqlBinary sqlBinary) {
StringBuilder binSB = new StringBuilder().Append("0x");
foreach (byte bt in sqlBinary.Value) {
binSB.Append(bt.ToString("X2"));
}
return binSB.ToString();
}
public static tSQLtPrivate Null {
get { throw new Exception("tSQLtPrivate is not intended to be used outside of tSQLt!"); }
}
public bool IsNull {
get { throw new Exception("tSQLtPrivate is not intended to be used outside of tSQLt!"); }
}
public static tSQLtPrivate Parse(SqlString input) {
throw new Exception("tSQLtPrivate is not intended to be used outside of tSQLt!");
}
public override String ToString() {
throw new Exception("tSQLtPrivate is not intended to be used outside of tSQLt!");
}
public void Read(System.IO.BinaryReader r) {
throw new NotImplementedException();
}
public void Write(System.IO.BinaryWriter w) {
throw new NotImplementedException();
}
}
}