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unit gfx_utils;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, gfxbase;
// Platform specific encoding handling functions
function fpgToOSEncoding(aString: TfpgString): string;
function fpgFromOSEncoding(aString: string): TfpgString;
// Common functions for all platforms
function fpgAddTrailingValue(const ALine, AValue: TfpgString; ADuplicates: boolean = true): TfpgString;
// RTL wrapper filesystem functions with platform independant encoding
// These functions are common for all platforms and rely on fpgXXXPlatformEncoding
function fpgFindFirst(const Path: TfpgString; Attr: Longint; out Rslt: TSearchRec): Longint;
function fpgFindNext(var Rslt: TSearchRec): Longint;
function fpgGetCurrentDir: TfpgString;
function fpgSetCurrentDir(const NewDir: TfpgString): Boolean;
function fpgExpandFileName(const FileName: TfpgString): TfpgString;
function fpgFileExists(const FileName: TfpgString): Boolean;
{ *** Examples of others we could do *** }
// function fpgCreateDir(const NewDir: TfpgString): Boolean;
// function fpgRemoveDir(const Dir: TfpgString): Boolean;
// function fpgForceDirectories(const Dir: TfpgString): Boolean;
// function fpgDeleteFile(const FileName: TfpgString): Boolean;
// function fpgRenameFile(const OldName, NewName: TfpgString): Boolean;
// function fpgFileSearch(const Name, DirList: TfpgString): TfpgString;
// function fpgFileIsReadOnly(const FileName: TfpgString): Boolean;
// ....
implementation
// Platform specific encoding handling functions
{$I gfx_utils_impl.inc}
// the common code for all platforms
function fpgAddTrailingValue(const ALine, AValue: TfpgString; ADuplicates: boolean = true): TfpgString;
begin
if ALine = '' then
begin
result := ALine;
Exit; //==>
end;
if ADuplicates then
begin
result := ALine + AValue;
Exit; //==>
end;
if (not SameText(Copy(ALine, Length(ALine) - Length(AValue) + 1, Length(AValue)), AValue)) then
result := ALine + AValue
else
result := ALine;
end;
// RTL wrapper filesystem functions
function fpgFindFirst(const Path: TfpgString; Attr: Longint; out
Rslt: TSearchRec): Longint;
begin
Result := FindFirst(fpgToOSEncoding(Path), Attr, Rslt);
Rslt.Name := fpgFromOSEncoding(Rslt.Name);
end;
function fpgFindNext(var Rslt: TSearchRec): Longint;
begin
Result := FindNext(Rslt);
Rslt.Name := fpgFromOSEncoding(Rslt.Name);
end;
function fpgGetCurrentDir: TfpgString;
begin
Result := fpgFromOSEncoding(GetCurrentDir);
end;
function fpgSetCurrentDir(const NewDir: TfpgString): Boolean;
begin
Result := SetCurrentDir(fpgToOSEncoding(NewDir));
end;
function fpgExpandFileName(const FileName: TfpgString): TfpgString;
begin
Result := fpgFromOSEncoding(ExpandFileName(fpgToOSEncoding(FileName)));
end;
function fpgFileExists(const FileName: TfpgString): Boolean;
begin
Result := FileExists(fpgToOSEncoding(FileName));
end;
end.
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