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Utility.pas
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Utility.pas
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unit Utility;
interface
uses
Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants,
System.Classes, System.Win.Registry, shlobj;
function CreateSCMPrefFileName(AFileName: TFileName): boolean;
function DeleteSCMPrefFileName(AFileName: TFileName): boolean;
function GetSCMAppDataDir(): string;
function GetSCMCommonAppDataDir(): string;
function ExistsSCMConnectionDefs(): boolean; deprecated;
function GetSCMPreferenceFileName(AName: String): string; overload;
function GetSCMPreferenceFileName(): string; overload;
function GetSCMTempDir(): string;
function GetSCMHelpPrefFileName(): string;
function GetSCMDocumentDir(): string;
function GetRegAppPath(appName: string): string;
function GetRegArtanemusAppPath(appName: string): string;
const
PrefFileName = 'SCM_ChartsPref.ini';
HelpPrefFileName = 'SCM_ChartsHelpPref.ini';
SCMSubFolder = '\Artanemus\SCM\';
SCMSectionName = 'Charts';
// DEPRECIATED
SCMConnectionDefsFileName = 'SCMConnectionDefs.ini';
SCMConnectionDefsName = 'MSSQL_SwimClubMeet';
implementation
function CreateSCMPrefFileName(AFileName: TFileName): boolean;
var
filehandle: NativeUInt;
begin
result := false;
// create the Help Preference file in 'APPDATA'
filehandle := FileCreate(AFileName);
// if NOT 'file already exists'
if not (filehandle = INVALID_HANDLE_VALUE) then
begin
FileClose(filehandle); // close.
result := true;
end;
end;
function DeleteSCMPrefFileName(AFileName: TFileName): boolean;
begin
result := false;
// delete the Help Preference file in 'APPDATA'
if (FileExists(AFileName)) then
result := DeleteFile(AFileName);
end;
// Short:
// Get the SCM application data directory.
// Long:
// All Artanemus applications have there application-specific information and
// settings stored in TIniFiles files. The location is given as...
// $APPDATA$\\Artanemus\\$APPLICATIONNAME$\\$DATADILENAME$.ini
// Path that is returned always contains trailing back-slash
// Out:
// $APPDATA$\\Artanemus\\SCM\\ if successful else return a NULL (empty) string.
// this returns 'C:\Users\USERNAME\AppData\Roaming\'
function GetSCMAppDataDir(): string;
var
str: string;
begin
result := '';
str := GetEnvironmentVariable('APPDATA');
str := IncludeTrailingPathDelimiter(str);
// Append product-specific path
str := str + SCMSubFolder;
if not DirectoryExists(str) then
begin
{ *
ForceDirectories creates a new directory as specified in Dir, which must be
a fully-qualified path name. If the directories given in the path do not yet
exist, ForceDirectories attempts to create them. ForceDirectories returns
True if it successfully creates all necessary directories, False if it could
not create a needed directory.
Note: Do not call ForceDirectories with an empty string. Doing so causes
ForceDirectories to raise an exception.
* }
if not System.SysUtils.ForceDirectories(str) then
// FAILED! - Use alternative default document directory...
exit;
end;
result := str;
end;
function GetSCMCommonAppDataDir(): string;
var
str: string;
szPath: array [0 .. Max_Path] of Char;
begin
result := '';
if (SUCCEEDED(SHGetFolderPath(null, CSIDL_COMMON_APPDATA, 0, 0, szPath))) then
begin
str := String(szPath);
str := IncludeTrailingPathDelimiter(str) + SCMSubFolder;
if not DirectoryExists(str) then
begin
if not CreateDir(str) then
exit;
end;
end;
result := str;
end;
function ExistsSCMConnectionDefs(): boolean;
begin
// DEPRECIATED ....
(*
UnicodeString str;
TCHAR szPath[MAX_PATH];
// Get path for each computer, non-user specific and non-roaming data.
if (SUCCEEDED(SHGetFolderPath(nullptr, CSIDL_COMMON_APPDATA, nullptr, 0, szPath)))
{
str = String(szPath);
// Append product-specific path
str = IncludeTrailingPathDelimiter(str) + SCMSubFolder +
SCMConnectionDefsFileName;
// Make sure the 'User\AppData\Roaming\%FILENAME%' is created!
if (FileExists(str)) {
return true;
}
}
return false;
*)
result := true;
end;
function GetSCMPreferenceFileName(AName: String): string;
var
str: string;
success: boolean;
begin
result := '';
str := GetSCMAppDataDir;
if str.IsEmpty then
exit;
str := str + AName;
if not FileExists(str) then
begin
success := CreateSCMPrefFileName(str);
if not success then
exit;
end;
result := str;
end;
function GetSCMPreferenceFileName(): string;
begin
result := GetSCMPreferenceFileName(PrefFileName);
end;
function GetSCMTempDir(): string;
var
str: string;
begin
result := '';
str := GetEnvironmentVariable('TMP');
str := IncludeTrailingPathDelimiter(str);
if not DirectoryExists(str) then
begin
if not CreateDir(str) then
exit;
end;
result := str;
end;
function GetSCMHelpPrefFileName(): string;
begin
result := GetSCMPreferenceFileName(HelpPrefFileName);
end;
function GetSCMDocumentDir(): string;
begin
result := GetEnvironmentVariable('HOMEPATH');
result := IncludeTrailingPathDelimiter(result);
result := result + 'SCM\';
end;
function GetRegAppPath(appName: string): string;
var
reg: TRegistry;
KeyName: string;
begin
KeyName := '\SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths\';
result := '';
reg := TRegistry.Create(KEY_READ);
try
begin
reg.RootKey := HKEY_LOCAL_MACHINE;
if reg.KeyExists(KeyName) then
begin
reg.OpenKey(KeyName, false);
result := reg.ReadString('Path');
end;
end;
finally
reg.Free;
end;
end;
function GetRegArtanemusAppPath(appName: string): string;
var
reg: TRegistry;
KeyName: string;
begin
KeyName := '\Software\\Artanemus\';
result := '';
KeyName := KeyName + appName + '\';
result := '';
reg := TRegistry.Create(KEY_READ);
try
begin
reg.RootKey := HKEY_CURRENT_USER;
reg.OpenKey(KeyName, false);
result := reg.ReadString('Path');
end;
finally
reg.Free;
end;
end;
end.