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apphelpers.pas
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apphelpers.pas
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unit apphelpers;
// -------------------------------------
// Functions-library
// -------------------------------------
interface
uses
Classes, SysUtils, Graphics, GraphUtil, ClipBrd, Dialogs, Forms, Controls, ShellApi,
Windows, ShlObj, ActiveX, VirtualTrees, SynRegExpr, Messages, Math,
Registry, DateUtils, Generics.Collections, StrUtils, AnsiStrings, TlHelp32, Types,
dbconnection, dbstructures, SynMemo, Menus, WinInet, gnugettext, Themes,
Character, ImgList, System.UITypes, ActnList, WinSock, IOUtils, StdCtrls, ComCtrls,
CommCtrl, Vcl.Imaging.pngimage;
type
TOrderCol = class(TObject)
ColumnName: String;
SortDirection: Byte;
end;
TOrderColArray = Array of TOrderCol;
TLineBreaks = (lbsNone, lbsWindows, lbsUnix, lbsMac, lbsWide, lbsMixed);
TDBObjectEditor = class(TFrame)
private
FModified: Boolean;
procedure SetModified(Value: Boolean);
protected
public
DBObject: TDBObject;
constructor Create(AOwner: TComponent); override;
destructor Destroy; override;
procedure Init(Obj: TDBObject); virtual;
function DeInit: TModalResult;
property Modified: Boolean read FModified write SetModified;
function ApplyModifications: TModalResult; virtual; abstract;
end;
TDBObjectEditorClass = class of TDBObjectEditor;
TSQLBatch = class;
TSQLSentence = class(TObject)
private
FOwner: TSQLBatch;
function GetSize: Integer;
function GetSQL: String;
public
LeftOffset, RightOffset: Integer;
constructor Create(Owner: TSQLBatch);
property SQL: String read GetSQL;
property Size: Integer read GetSize;
end;
TSQLBatch = class(TObjectList<TSQLSentence>)
private
FSQL: String;
procedure SetSQL(Value: String);
function GetSize: Integer;
public
property Size: Integer read GetSize;
property SQL: String read FSQL write SetSQL;
end;
// Download
THttpDownload = class(TObject)
private
FOwner: TComponent;
FURL: String;
FBytesRead: Integer;
FContentLength: Integer;
FTimeOut: Cardinal;
FOnProgress: TNotifyEvent;
public
constructor Create(Owner: TComponent);
procedure SendRequest(Filename: String);
property OnProgress: TNotifyEvent read FOnProgress write FOnProgress;
property URL: String read FURL write FURL;
property TimeOut: Cardinal read FTimeOut write FTimeOut;
property BytesRead: Integer read FBytesRead;
property ContentLength: Integer read FContentLength;
end;
// Threading stuff
TQueryThread = class(TThread)
private
FConnection: TDBConnection;
FBatch: TSQLBatch;
FTabNumber: Integer;
FBatchInOneGo: Boolean;
FStopOnErrors: Boolean;
FAborted: Boolean;
FErrorMessage: String;
FBatchPosition: Integer;
FQueriesInPacket: Integer;
FQueryStartedAt: TDateTime;
FQueryTime: Cardinal;
FQueryNetTime: Cardinal;
FRowsAffected: Int64;
FRowsFound: Int64;
FWarningCount: Int64;
FLogMsg: String;
FLogCategory: TDBLogCategory;
procedure BeforeQuery;
procedure AfterQuery;
procedure BatchFinished;
procedure Log;
public
property Connection: TDBConnection read FConnection;
property Batch: TSQLBatch read FBatch;
property TabNumber: Integer read FTabNumber;
property BatchPosition: Integer read FBatchPosition;
property QueriesInPacket: Integer read FQueriesInPacket;
property QueryStartedAt: TDateTime read FQueryStartedAt;
property QueryTime: Cardinal read FQueryTime;
property QueryNetTime: Cardinal read FQueryNetTime;
property RowsAffected: Int64 read FRowsAffected;
property RowsFound: Int64 read FRowsFound;
property WarningCount: Int64 read FWarningCount;
property Aborted: Boolean read FAborted write FAborted;
property ErrorMessage: String read FErrorMessage;
constructor Create(Connection: TDBConnection; Batch: TSQLBatch; TabNumber: Integer);
procedure Execute; override;
procedure LogFromOutside(Msg: String; Category: TDBLogCategory);
end;
TAppSettingDataType = (adInt, adBool, adString);
TAppSettingIndex = (asHiddenColumns, asFilter, asSort, asDisplayedColumnsSorted, asLastSessions,
asLastActiveSession, asAutoReconnect, asRestoreLastUsedDB, asLastUsedDB, asTreeBackground,
asFontName, asFontSize, asTabWidth, asDataFontName, asDataFontSize, asDataLocalNumberFormat, asHintsOnResultTabs, asHightlightSameTextBackground,
asLogsqlnum, asLogsqlwidth, asSessionLogsDirectory, asLogHorizontalScrollbar, asSQLColActiveLine,
asSQLColMatchingBraceForeground, asSQLColMatchingBraceBackground,
asMaxColWidth, asDatagridMaximumRows, asDatagridRowsPerStep, asGridRowLineCount, asReuseEditorConfiguration,
asLogToFile, asMainWinMaximized, asMainWinLeft, asMainWinTop, asMainWinWidth,
asMainWinHeight, asMainWinOnMonitor, asCoolBandIndex, asCoolBandBreak, asCoolBandWidth, asToolbarShowCaptions, asQuerymemoheight, asDbtreewidth,
asDataPreviewHeight, asDataPreviewEnabled, asLogHeight, asQueryhelperswidth, asStopOnErrorsInBatchMode,
asWrapLongLines, asDisplayBLOBsAsText, asSingleQueries, asMemoEditorWidth, asMemoEditorHeight, asMemoEditorMaximized,
asMemoEditorWrap, asDelimiter, asSQLHelpWindowLeft, asSQLHelpWindowTop, asSQLHelpWindowWidth,
asSQLHelpWindowHeight, asSQLHelpPnlLeftWidth, asSQLHelpPnlRightTopHeight, asHost,
asUser, asPassword, asCleartextPluginEnabled, asWindowsAuth, asLoginPrompt, asPort, asLibrary,
asPlinkExecutable, asSSHtunnelHost, asSSHtunnelHostPort, asSSHtunnelPort, asSSHtunnelUser,
asSSHtunnelPassword, asSSHtunnelTimeout, asSSHtunnelPrivateKey, asSSLActive, asSSLKey,
asSSLCert, asSSLCA, asSSLCipher, asNetType, asCompressed, asLocalTimeZone, asQueryTimeout, asKeepAlive,
asStartupScriptFilename, asDatabases, asComment, asDatabaseFilter, asTableFilter, asExportSQLCreateDatabases,
asExportSQLCreateTables, asExportSQLDataHow, asExportSQLDataInsertSize, asExportSQLFilenames, asExportZIPFilenames, asExportSQLDirectories,
asExportSQLDatabase, asExportSQLServerDatabase, asExportSQLOutput, asExportSQLAddComments, asExportSQLRemoveAutoIncrement,
asGridExportWindowWidth, asGridExportWindowHeight, asGridExportOutputCopy, asGridExportOutputFile,
asGridExportFilename, asGridExportRecentFiles, asGridExportEncoding, asGridExportFormat, asGridExportSelection,
asGridExportColumnNames, asGridExportIncludeAutoInc, asGridExportIncludeQuery,
asGridExportSeparator, asGridExportEncloser, asGridExportTerminator, asGridExportNull,
asGridExportClpFormat, asGridExportClpColumnNames, asGridExportClpIncludeAutoInc,
asGridExportClpSeparator, asGridExportClpEncloser, asGridExportClpTerminator, asGridExportClpNull,
asCSVImportSeparator, asCSVImportEncloser, asCSVImportTerminator, asCSVImportFieldEscaper, asCSVImportWindowWidth, asCSVImportWindowHeight,
asCSVImportFilename, asCSVImportFieldsEnclosedOptionally, asCSVImportIgnoreLines, asCSVImportLowPriority, asCSVImportLocalNumbers,
asCSVImportDuplicateHandling, asCSVImportParseMethod, asUpdatecheck, asUpdatecheckBuilds,
asUpdatecheckInterval, asUpdatecheckLastrun, asTableToolsWindowWidth, asTableToolsWindowHeight, asTableToolsTreeWidth,
asTableToolsFindText, asTableToolsDatatype, asTableToolsFindCaseSensitive, asTableToolsFindMatchType, asFileImportWindowWidth, asFileImportWindowHeight,
asEditVarWindowWidth, asEditVarWindowHeight, asUsermanagerWindowWidth, asUsermanagerWindowHeight, asUsermanagerListWidth,
asSelectDBOWindowWidth, asSelectDBOWindowHeight,
asSessionManagerListWidth, asSessionManagerWindowWidth, asSessionManagerWindowHeight, asSessionManagerWindowLeft, asSessionManagerWindowTop,
asCopyTableWindowHeight, asCopyTableWindowWidth, asCopyTableColumns, asCopyTableKeys, asCopyTableForeignKeys,
asCopyTableData, asCopyTableRecentFilter, asServerVersion, asServerVersionFull, asLastConnect,
asConnectCount, asRefusedCount, asSessionCreated, asDoUsageStatistics,
asLastUsageStatisticCall, asWheelZoom, asDisplayBars, asMySQLBinaries, asCustomSnippetsDirectory,
asPromptSaveFileOnTabClose, asRestoreTabs, asWarnUnsafeUpdates, asQueryWarningsMessage,
asCompletionProposal, asCompletionProposalWidth, asCompletionProposalNbLinesInWindow, asAutoUppercase,
asTabsToSpaces, asFilterPanel, asAllowMultipleInstances, asFindDialogSearchHistory, asGUIFontName, asGUIFontSize,
asTheme, asIconPack, asWebSearchBaseUrl,
asFindDialogReplaceHistory, asMaxQueryResults, asLogErrors,
asLogUserSQL, asLogSQL, asLogInfos, asLogDebug, asLogScript, asFieldColorNumeric,
asFieldColorReal, asFieldColorText, asFieldColorBinary, asFieldColorDatetime, asFieldColorSpatial,
asFieldColorOther, asFieldEditorBinary, asFieldEditorDatetime, asFieldEditorDatetimePrefill, asFieldEditorEnum,
asFieldEditorSet, asFieldNullBackground, asRowBackgroundEven, asRowBackgroundOdd, asGroupTreeObjects, asDisplayObjectSizeColumn, asSQLfile,
asActionShortcut1, asActionShortcut2, asHighlighterForeground, asHighlighterBackground, asHighlighterStyle,
asListColWidths, asListColsVisible, asListColPositions, asListColSort, asSessionFolder,
asRecentFilter, asTimestampColumns, asDateTimeEditorCursorPos, asAppLanguage, asAutoExpand, asDoubleClickInsertsNodeText, asForeignDropDown,
asQueryHistoryEnabled, asQueryHistoryKeepDays,
asColumnSelectorWidth, asColumnSelectorHeight, asDonatedEmail, asFavoriteObjects, asFavoriteObjectsOnly, asFullTableStatus, asLineBreakStyle,
asPreferencesWindowWidth, asPreferencesWindowHeight,
asFileDialogEncoding,
asThemePreviewWidth, asThemePreviewHeight, asThemePreviewTop, asThemePreviewLeft,
asUnused);
TAppSetting = record
Name: String;
Session: Boolean;
DefaultInt, CurrentInt: Integer;
DefaultBool, CurrentBool: Boolean;
DefaultString, CurrentString: String;
Synced: Boolean;
end;
TAppSettings = class(TObject)
private
FReads, FWrites: Integer;
FBasePath: String;
FSessionPath: String;
FRegistry: TRegistry;
FPortableMode: Boolean;
FPortableModeReadOnly: Boolean;
FRestoreTabsInitValue: Boolean;
FSettingsFile: String;
FSettings: Array[TAppSettingIndex] of TAppSetting;
procedure InitSetting(Index: TAppSettingIndex; Name: String;
DefaultInt: Integer=0; DefaultBool: Boolean=False; DefaultString: String='';
Session: Boolean=False);
procedure SetSessionPath(Value: String);
procedure PrepareRegistry;
procedure Read(Index: TAppSettingIndex; FormatName: String;
DataType: TAppSettingDataType; var I: Integer; var B: Boolean; var S: String;
DI: Integer; DB: Boolean; DS: String);
procedure Write(Index: TAppSettingIndex; FormatName: String;
DataType: TAppSettingDataType; I: Integer; B: Boolean; S: String);
public
constructor Create;
destructor Destroy; override;
function ReadInt(Index: TAppSettingIndex; FormatName: String=''; Default: Integer=0): Integer;
function ReadBool(Index: TAppSettingIndex; FormatName: String=''; Default: Boolean=False): Boolean;
function ReadString(Index: TAppSettingIndex; FormatName: String=''; Default: String=''): String; overload;
function ReadString(ValueName: String): String; overload;
procedure WriteInt(Index: TAppSettingIndex; Value: Integer; FormatName: String='');
procedure WriteBool(Index: TAppSettingIndex; Value: Boolean; FormatName: String='');
procedure WriteString(Index: TAppSettingIndex; Value: String; FormatName: String=''); overload;
procedure WriteString(ValueName, Value: String); overload;
function GetDefaultInt(Index: TAppSettingIndex): Integer;
function GetDefaultBool(Index: TAppSettingIndex): Boolean;
function GetDefaultString(Index: TAppSettingIndex): String;
function GetValueName(Index: TAppSettingIndex): String;
function GetValueNames: TStringList;
function GetKeyNames: TStringList;
function GetSessionNames(ParentPath: String; var Folders: TStringList): TStringList;
procedure GetSessionPaths(ParentPath: String; var Sessions: TStringList);
function DeleteValue(Index: TAppSettingIndex; FormatName: String=''): Boolean; overload;
function DeleteValue(ValueName: String): Boolean; overload;
procedure DeleteCurrentKey;
procedure MoveCurrentKey(TargetPath: String);
function ValueExists(Index: TAppSettingIndex): Boolean;
function SessionPathExists(SessionPath: String): Boolean;
function IsEmptyKey: Boolean;
procedure ResetPath;
property SessionPath: String read FSessionPath write SetSessionPath;
property PortableMode: Boolean read FPortableMode;
property PortableModeReadOnly: Boolean read FPortableModeReadOnly write FPortableModeReadOnly;
property Writes: Integer read FWrites;
procedure ImportSettings(Filename: String);
function ExportSettings(Filename: String): Boolean; overload;
function ExportSettings: Boolean; overload;
// Common directories
function DirnameUserAppData: String;
function DirnameUserDocuments: String;
function DirnameSnippets: String;
function DirnameBackups: String;
// "Static" options, initialized in OnCreate only. For settings which need a restart to take effect.
property RestoreTabsInitValue: Boolean read FRestoreTabsInitValue;
end;
{$I const.inc}
function implodestr(seperator: String; a: TStrings) :String;
function Explode(Separator, Text: String) :TStringList;
procedure ExplodeQuotedList(Text: String; var List: TStringList);
function sstr(str: String; len: Integer) : String;
function encrypt(str: String): String;
function decrypt(str: String): String;
function HTMLSpecialChars(str: String): String;
function BestTableName(Data: TDBQuery): String;
function EncodeURLParam(const Value: String): String;
procedure StreamWrite(S: TStream; Text: String = '');
function _GetFileSize(Filename: String): Int64;
function MakeInt(Str: String) : Int64;
function MakeFloat(Str: String): Extended;
function CleanupNumber(Str: String): String;
function IsInt(Str: String): Boolean;
function IsFloat(Str: String): Boolean;
function esc(Text: String; ProcessJokerChars: Boolean=false; DoQuote: Boolean=True): String;
function ScanLineBreaks(Text: String): TLineBreaks;
function CountLineBreaks(Text: String; LineBreak: TLineBreaks=lbsWindows): Cardinal;
function fixNewlines(txt: String): String;
function GetShellFolder(CSIDL: integer): string;
function goodfilename( str: String ): String;
function ExtractBaseFileName(FileName: String): String;
function FormatNumber( str: String; Thousands: Boolean=True): String; Overload;
function UnformatNumber(Val: String): String;
function FormatNumber( int: Int64; Thousands: Boolean=True): String; Overload;
function FormatNumber( flt: Double; decimals: Integer = 0; Thousands: Boolean=True): String; Overload;
procedure ShellExec(cmd: String; path: String=''; params: String='');
function getFirstWord(text: String; MustStartWithWordChar: Boolean=True): String;
function RegExprGetMatch(Expression: String; var Input: String; ReturnMatchNum: Integer; DeleteFromSource: Boolean): String; Overload;
function RegExprGetMatch(Expression: String; Input: String; ReturnMatchNum: Integer): String; Overload;
function FormatByteNumber( Bytes: Int64; Decimals: Byte = 1 ): String; Overload;
function FormatByteNumber( Bytes: String; Decimals: Byte = 1 ): String; Overload;
function FormatTimeNumber(Seconds: Double; DisplaySeconds: Boolean): String;
function GetTempDir: String;
procedure SaveUnicodeFile(Filename: String; Text: String);
procedure OpenTextFile(const Filename: String; out Stream: TFileStream; var Encoding: TEncoding);
function DetectEncoding(Stream: TStream): TEncoding;
function ReadTextfileChunk(Stream: TFileStream; Encoding: TEncoding; ChunkSize: Int64 = 0): String;
function ReadTextfile(Filename: String; Encoding: TEncoding): String;
function ReadBinaryFile(Filename: String; MaxBytes: Int64): AnsiString;
procedure StreamToClipboard(Text, HTML: TStream; CreateHTMLHeader: Boolean);
function WideHexToBin(text: String): AnsiString;
function BinToWideHex(bin: AnsiString): String;
procedure FixVT(VT: TVirtualStringTree; MultiLineCount: Word=1);
procedure FixDropDownButtons(Form: TForm);
function GetTextHeight(Font: TFont): Integer;
function ColorAdjustBrightness(Col: TColor; Shift: SmallInt): TColor;
function ComposeOrderClause(Cols: TOrderColArray): String;
procedure DeInitializeVTNodes(Sender: TBaseVirtualTree);
function FindNode(VT: TVirtualStringTree; idx: Int64; ParentNode: PVirtualNode): PVirtualNode;
procedure SelectNode(VT: TVirtualStringTree; idx: Int64; ParentNode: PVirtualNode=nil); overload;
procedure SelectNode(VT: TVirtualStringTree; Node: PVirtualNode); overload;
procedure GetVTSelection(VT: TVirtualStringTree; var SelectedCaptions: TStringList; var FocusedCaption: String);
procedure SetVTSelection(VT: TVirtualStringTree; SelectedCaptions: TStringList; FocusedCaption: String);
function GetNextNode(Tree: TVirtualStringTree; CurrentNode: PVirtualNode; Selected: Boolean=False): PVirtualNode;
function GetPreviousNode(Tree: TVirtualStringTree; CurrentNode: PVirtualNode; Selected: Boolean=False): PVirtualNode;
function DateBackFriendlyCaption(d: TDateTime): String;
function GetLightness(AColor: TColor): Byte;
function ReformatSQL(SQL: String): String;
function ParamBlobToStr(lpData: Pointer): String;
function ParamStrToBlob(out cbData: DWORD): Pointer;
function CheckForSecondInstance: Boolean;
function GetParentFormOrFrame(Comp: TWinControl): TWinControl;
function KeyPressed(Code: Integer): Boolean;
function GeneratePassword(Len: Integer): String;
procedure InvalidateVT(VT: TVirtualStringTree; RefreshTag: Integer; ImmediateRepaint: Boolean);
function CharAtPos(Str: String; Pos: Integer): Char;
function CompareAnyNode(Text1, Text2: String): Integer;
function StringListCompareAnythingAsc(List: TStringList; Index1, Index2: Integer): Integer;
function StringListCompareAnythingDesc(List: TStringList; Index1, Index2: Integer): Integer;
function StringListCompareByValue(List: TStringList; Index1, Index2: Integer): Integer;
function GetImageLinkTimeStamp(const FileName: string): TDateTime;
function IsEmpty(Str: String): Boolean;
function IsNotEmpty(Str: String): Boolean;
function MessageDialog(const Msg: string; DlgType: TMsgDlgType; Buttons: TMsgDlgButtons): Integer; overload;
function MessageDialog(const Title, Msg: string; DlgType: TMsgDlgType; Buttons: TMsgDlgButtons; KeepAskingSetting: TAppSettingIndex=asUnused): Integer; overload;
function ErrorDialog(Msg: string): Integer; overload;
function ErrorDialog(const Title, Msg: string): Integer; overload;
function GetHTMLCharsetByEncoding(Encoding: TEncoding): String;
procedure ParseCommandLine(CommandLine: String; var ConnectionParams: TConnectionParameters; var FileNames: TStringList);
function f_(const Pattern: string; const Args: array of const): string;
function GetOutputFilename(FilenameWithPlaceholders: String; DBObj: TDBObject): String;
function GetOutputFilenamePlaceholders: TStringList;
function GetSystemImageList: TImageList;
function GetSystemImageIndex(Filename: String): Integer;
function GetExecutableBits: Byte;
procedure Help(Sender: TObject; Anchor: String);
function PortOpen(Port: Word): Boolean;
function IsValidFilePath(FilePath: String): Boolean;
function FileIsWritable(FilePath: String): Boolean;
function GetProductInfo(dwOSMajorVersion, dwOSMinorVersion, dwSpMajorVersion, dwSpMinorVersion: DWORD; out pdwReturnedProductType: DWORD): BOOL stdcall; external kernel32 delayed;
function RunningOnWindows10S: Boolean;
function GetCurrentPackageFullName(out Len: Cardinal; Name: PWideChar): Integer; stdcall; external kernel32 delayed;
function GetUwpFullName: String;
function RunningAsUwp: Boolean;
function GetThemeColor(Color: TColor): TColor;
function ThemeIsDark(ThemeName: String): Boolean;
function ProcessExists(pid: Cardinal): Boolean;
procedure ToggleCheckBoxWithoutClick(chk: TCheckBox; State: Boolean);
var
AppSettings: TAppSettings;
MutexHandle: THandle = 0;
SystemImageList: TImageList;
mtCriticalConfirmation: TMsgDlgType = mtCustom;
ConfirmIcon: TIcon;
NumberChars: TSysCharSet;
implementation
uses main;
function WideHexToBin(text: String): AnsiString;
var
buf: AnsiString;
begin
buf := AnsiString(text);
SetLength(Result, Length(text) div 2);
HexToBin(PAnsiChar(buf), @Result[1], Length(Result));
end;
function BinToWideHex(bin: AnsiString): String;
var
buf: AnsiString;
begin
SetLength(buf, Length(bin) * 2);
BinToHex(@bin[1], PAnsiChar(buf), Length(bin));
Result := String(buf);
end;
{***
Convert a TStringList to a string using a separator-string
@todo Look at each caller to see if escaping is necessary.
@param string Separator
@param a TStringList Containing strings
@return string
}
function implodestr(seperator: String; a: TStrings) :String;
var
i : Integer;
begin
Result := '';
for i:=0 to a.Count-1 do
begin
Result := Result + a[i];
if i < a.Count-1 then
Result := Result + seperator;
end;
end;
function Explode(Separator, Text: String): TStringList;
var
i: Integer;
Item: String;
begin
// Explode a string by separator into a TStringList
Result := TStringList.Create;
while true do begin
i := Pos(Separator, Text);
if i = 0 then begin
// Last or only segment: Add to list if it's the last. Add also if it's not empty and list is empty.
// Do not add if list is empty and text is also empty.
if (Result.Count > 0) or (Text <> '') then
Result.Add(Text);
break;
end;
Item := Trim(Copy(Text, 1, i-1));
Result.Add(Item);
Delete(Text, 1, i-1+Length(Separator));
end;
end;
{***
Shorten string to length len and append 3 dots
@param string String to shorten
@param integer Wished Length of string
@return string
}
function sstr(str: String; len: Integer) : String;
begin
if length(str) > len then
begin
str := copy(str, 0, len-1);
str := str + '
';
end;
result := str;
end;
{***
Password-encryption, used to store session-passwords in registry
@param string Text to encrypt
@return string Encrypted Text
}
function encrypt(str: String) : String;
var
i, salt, nr : integer;
h : String;
begin
randomize();
result := '';
salt := random(9) + 1;
for i:=1 to length(str) do begin
nr := ord(str[i])+salt;
if nr > 255 then
nr := nr - 255;
h := inttohex(nr,0);
if length(h) = 1 then
h := '0' + h;
result := result + h;
end;
result := result + inttostr(salt);
end;
{***
Password-decryption, used to restore session-passwords from registry
@param string Text to decrypt
@return string Decrypted Text
}
function decrypt(str: String) : String;
var
j, salt, nr : integer;
begin
result := '';
if str = '' then exit;
j := 1;
salt := StrToIntDef(str[length(str)],0);
result := '';
while j < length(str)-1 do begin
nr := StrToInt('$' + str[j] + str[j+1]) - salt;
if nr < 0 then
nr := nr + 255;
result := result + chr(nr);
inc(j, 2);
end;
end;
function HTMLSpecialChars(str: String) : String;
begin
// Convert critical HTML-characters to entities. Used in grid export.
result := StringReplace(str, '&', '&', [rfReplaceAll]);
result := StringReplace(result, '<', '<', [rfReplaceAll]);
result := StringReplace(result, '>', '>', [rfReplaceAll]);
end;
function BestTableName(Data: TDBQuery): String;
begin
// Get table name from result if possible. Used by GridToXYZ() functions.
try
Result := Data.TableName;
except
Result := _('UnknownTable');
end;
end;
function EncodeURLParam(const Value: String): String;
var
c: Char;
const
UnsafeChars: String = '*<>#%"{}|\^[]`?&+;';
begin
// Encode critical chars in url parameter
Result := '';
for c in Value do begin
if (Pos(c, UnsafeChars)>0) or (Ord(c) < 33) or (Ord(c) > 128) then
Result := Result + '%'+IntToHex(Ord(c), 2)
else
Result := Result + c;
end;
end;
{**
Write some UTF8 text to a file- or memorystream
}
procedure StreamWrite(S: TStream; Text: String = '');
var
utf8: AnsiString;
begin
utf8 := Utf8Encode(Text);
S.Write(utf8[1], Length(utf8));
end;
{***
Return filesize of a given file
@param string Filename
@return int64 Size in bytes
}
function _GetFileSize(Filename: String): Int64;
var
Attr: _WIN32_FILE_ATTRIBUTE_DATA;
begin
if FileExists(Filename) then begin
GetFileAttributesEx(PChar(Filename), GetFileExInfoStandard, @Attr);
Result := Int64(Attr.nFileSizeHigh) shl 32 + Int64(Attr.nFileSizeLow);
end else
Result := -1;
end;
{***
Convert a string-number to an integer-number
@param string String-number
@return int64
}
function MakeInt(Str: String): Int64;
begin
// Result has to be of integer type
try
Result := Trunc(MakeFloat(Str));
except
Result := 0;
end;
end;
function CleanupNumber(Str: String): String;
var
i: Integer;
HasDecimalSep: Boolean;
begin
// Ensure the passed string contains a valid number, which is convertable by StrToFloat afterwards
// Return it as string again, as there are callers which need to handle unsigned bigint's somehow -
// there is no unsigned 64 bit integer type in Delphi.
Result := '';
// Unformatted float coming in? Detect by order of thousand and decimal char
if ((Pos(',', Str) > 0) and (Pos(',', Str) < Pos('.', Str)))
or ((Pos('.', Str) > 0) and (Pos('.', ReverseString(Str)) <> 4))
then begin
Str := StringReplace(Str, '.', '*', [rfReplaceAll]);
Str := StringReplace(Str, ',', FormatSettings.ThousandSeparator, [rfReplaceAll]);
Str := StringReplace(Str, '*', FormatSettings.DecimalSeparator, [rfReplaceAll]);
end;
HasDecimalSep := False;
for i:=1 to Length(Str) do begin
if CharInSet(Str[i], NumberChars) or ((Str[i] = '-') and (Result='')) then
begin
// Avoid confusion and AV in StrToFloat()
if (FormatSettings.ThousandSeparator = FormatSettings.DecimalSeparator) and (Str[i] = FormatSettings.DecimalSeparator) then
continue;
// Ensure only 1 decimalseparator is left
if (Str[i] = FormatSettings.DecimalSeparator) and HasDecimalSep then
continue;
if Str[i] = FormatSettings.DecimalSeparator then
HasDecimalSep := True;
if Str[i] = FormatSettings.ThousandSeparator then
Continue;
Result := Result + Str[i];
end else
Break;
end;
if (Result = '') or (Result = '-') then
Result := '0';
end;
function IsInt(Str: String): Boolean;
begin
Result := IntToStr(MakeInt(Str)) = Str;
end;
function IsFloat(Str: String): Boolean;
begin
Result := FloatToStr(MakeFloat(Str)) = Str;
end;
{***
Convert a string-number to an floatingpoint-number
@param String text representation of a number
@return Extended
}
function MakeFloat(Str: String): Extended;
var
p_kb, p_mb, p_gb, p_tb, p_pb : Integer;
begin
// Convert result to a floating point value to ensure
// we don't discard decimal digits for the next step
Result := StrToFloat(CleanupNumber(Str));
// Detect if the string was previously formatted by FormatByteNumber
// and convert it back by multiplying it with its byte unit
p_kb := Pos(NAME_KB, Str);
p_mb := Pos(NAME_MB, Str);
p_gb := Pos(NAME_GB, Str);
p_tb := Pos(NAME_TB, Str);
p_pb := Pos(NAME_PB, Str);
if (p_kb > 0) and (p_kb = Length(Str)-Length(NAME_KB)+1) then
Result := Result * SIZE_KB
else if (p_mb > 0) and (p_mb = Length(Str)-Length(NAME_MB)+1) then
Result := Result * SIZE_MB
else if (p_gb > 0) and (p_gb = Length(Str)-Length(NAME_GB)+1) then
Result := Result * SIZE_GB
else if (p_tb > 0) and (p_tb = Length(Str)-Length(NAME_TB)+1) then
Result := Result * SIZE_TB
else if (p_pb > 0) and (p_pb = Length(Str)-Length(NAME_PB)+1) then
Result := Result * SIZE_PB;
end;
function esc(Text: String; ProcessJokerChars: Boolean=false; DoQuote: Boolean=True): String;
begin
Result := MainForm.ActiveConnection.EscapeString(Text, ProcessJokerChars, DoQuote);
end;
{***
SynEdit removes all newlines and semi-randomly decides a
new newline format to use for any text edited.
See also: Delphi's incomplete implementation of TTextLineBreakStyle in System.pas
@param string Text to test
@return TLineBreaks
}
function ScanLineBreaks(Text: String): TLineBreaks;
var
i, SeekSize: Integer;
c: Char;
procedure SetResult(Style: TLineBreaks);
begin
// Note: Prefer "(foo <> a) and (foo <> b)" over "not (foo in [a, b])" in excessive loops
// for performance reasons - there is or was a Delphi bug leaving those inline SETs in memory
// after usage. Unfortunately can't remember which bug id it was and if it still exists.
if (Result <> lbsNone) and (Result <> Style) then
Result := lbsMixed
else
Result := Style;
end;
begin
Result := lbsNone;
SeekSize := Min(Length(Text), SIZE_MB);
if SeekSize = 0 then
Exit;
i := 1;
repeat
c := Text[i];
if c = #13 then begin
if (i < SeekSize) and (Text[i+1] = #10) then begin
Inc(i);
SetResult(lbsWindows);
end else
SetResult(lbsMac);
end else if c = LB_UNIX then
SetResult(lbsUnix)
else if c = LB_WIDE then
SetResult(lbsWide);
i := i + 1;
// No need to do more checks after detecting mixed style
if Result = lbsMixed then
break;
until i > SeekSize;
end;
function CountLineBreaks(Text: String; LineBreak: TLineBreaks=lbsWindows): Cardinal;
var
Offset: Integer;
BreakStr: String;
begin
// Count number of given line breaks in text
Result := 0;
case LineBreak of
lbsWindows: BreakStr := CRLF;
lbsUnix: BreakStr := LB_UNIX;
lbsMac: BreakStr := LB_MAC;
lbsWide: BreakStr := LB_WIDE;
else Exit;
end;
Offset := PosEx(BreakStr, Text, 1);
while Offset <> 0 do begin
Inc(Result);
Offset := PosEx(BreakStr, Text, Offset + Length(BreakStr));
end;
end;
{***
Unify CR's and LF's to CRLF
@param string Text to fix
@return string
}
function fixNewlines(txt: String): String;
begin
txt := StringReplace(txt, CRLF, #10, [rfReplaceAll]);
txt := StringReplace(txt, #13, #10, [rfReplaceAll]);
txt := StringReplace(txt, #10, CRLF, [rfReplaceAll]);
result := txt;
end;
{***
Get the path of a Windows(r)-shellfolder, specified by an integer or a constant
@param integer Number or constant
@return string Path
}
function GetShellFolder(CSIDL: integer): string;
var
pidl : PItemIdList;
FolderPath : string;
SystemFolder : Integer;
Malloc : IMalloc;
begin
Malloc := nil;
FolderPath := '';
SHGetMalloc(Malloc);
if Malloc = nil then
begin
Result := FolderPath;
Exit;
end;
try
SystemFolder := CSIDL;
if SUCCEEDED(SHGetSpecialFolderLocation(0, SystemFolder, pidl)) then
begin
SetLength(FolderPath, max_path);
if SHGetPathFromIDList(pidl, PChar(FolderPath)) then
begin
SetLength(FolderPath, length(PChar(FolderPath)));
end;
end;
Result := FolderPath;
finally
Malloc.Free(pidl);
end;
end;
{***
Remove special characters from a filename
@param string Filename
@return string
}
function goodfilename( str: String ): String;
var
c : Char;
begin
result := str;
for c in ['\', '/', ':', '*', '?', '"', '<', '>', '|'] do
result := StringReplace( result, c, '_', [rfReplaceAll] );
end;
function ExtractBaseFileName(FileName: String): String;
var
Ext: String;
begin
// Extract file name without path and file extension
FileName := ExtractFileName(FileName);
Ext := ExtractFileExt(FileName);
Result := Copy(FileName, 1, Length(FileName)-Length(Ext));
end;
{**
Unformat a formatted integer or float. Used for CSV export and composing WHERE clauses for grid editing.
}
function UnformatNumber(Val: String): String;
var
i: Integer;
HasDecim: Boolean;
c: Char;
const
Numbers = ['0'..'9'];
begin
Result := '';
HasDecim := False;
for i:=1 to Length(Val) do begin
c := Val[i];
if (c = '-') and (i = 1) then
Result := Result + c
else if CharInSet(c, Numbers) then begin
if (c = '0') and (Result = '') then
// remove zeropadding
else
Result := Result + c
end else if (c = FormatSettings.DecimalSeparator) and (not HasDecim) then begin
if Result = '' then
Result := '0';
Result := Result + '.';
HasDecim := True;
end else if c <> FormatSettings.ThousandSeparator then
break;
end;
if Result = '' then
Result := '0';
end;
{***
Return a formatted integer or float from a string
@param string Text containing a number
@return string
}
function FormatNumber(str: String; Thousands: Boolean=True): String; Overload;
var
i, p, Left: Integer;
begin
Result := StringReplace(str, '.', FormatSettings.DecimalSeparator, [rfReplaceAll]);
if Thousands then begin
// Do not add thousand separators to zerofilled numbers
if ((Length(Result) >= 1) and (Result[1] = '0'))
or ((Length(Result) >= 2) and (Result[1] = '-') and (Result[2] = '0'))
then
Exit;
p := Pos(FormatSettings.DecimalSeparator, Result);
if p = 0 then p := Length(Result)+1;
Left := 2;
if (Length(Result) >= 1) and (Result[1] = '-') then
Left := 3;
if p > 0 then for i:=p-1 downto Left do begin
if (p-i) mod 3 = 0 then
Insert(FormatSettings.ThousandSeparator, Result, i);
end;
end;
end;
{***
Return a formatted number from an integer
@param int64 Number to format
@return string
}
function FormatNumber(int: Int64; Thousands: Boolean=True): String; Overload;
begin
result := FormatNumber(IntToStr(int), Thousands);
end;
{***
Return a formatted number from a float
This function is called by two overloaded functions
@param double Number to format
@param integer Number of decimals
@return string
}
function FormatNumber(flt: Double; decimals: Integer = 0; Thousands: Boolean=True): String; Overload;
begin
Result := Format('%10.'+IntToStr(decimals)+'f', [flt]);
Result := Trim(Result);
Result := FormatNumber(Result, Thousands);
end;
{***
Open URL or execute system command
@param string Command or URL to execute
@param string Working directory, only usefull is first param is a system command
}
procedure ShellExec(cmd: String; path: String=''; params: String='');
var
Msg: String;
begin
Msg := 'Executing shell command: "'+cmd+'"';
if not path.IsEmpty then
Msg := Msg + ' path: "'+path+'"';
if not params.IsEmpty then
Msg := Msg + ' params: "'+params+'"';
MainForm.LogSQL(Msg, lcDebug);
ShellExecute(0, 'open', PChar(cmd), PChar(params), PChar(path), SW_SHOWNORMAL);
end;
{***
Returns first word of a given text
@param string Given text
@return string First word-boundary
}
function getFirstWord(text: String; MustStartWithWordChar: Boolean=True): String;
var
i : Integer;
wordChars, wordCharsFirst : TSysCharSet;
begin
result := '';
text := trim( text );
// First char in word must not be numerical. Fixes queries like
// /*!40000 SHOW ENGINES */ to be recognized as "result"-queries
// while not breaking getFirstWord in situations where the second
// or later char can be a number (fx the collation in createdatabase).
wordChars := ['a'..'z', 'A'..'Z', '0'..'9', '_', '-'];
if MustStartWithWordChar then
wordCharsFirst := wordChars - ['0'..'9']
else
wordCharsFirst := wordChars;
i := 1;
// Find beginning of the first word, ignoring non-alphanumeric chars at the very start
// @see bug #1692828
while i < Length(text) do
begin
if CharInSet(text[i], wordCharsFirst) then
begin
// Found beginning of word!
break;
end;
if i = Length(text)-1 then
begin
// Give up in the very last loop, reset counter
// and break. We can't find the start of a word
i := 1;
break;
end;
inc(i);
end;
// Add chars as long as they're alpha-numeric
while i <= Length(text) do