diff --git a/src/sfs/sfs.pas b/src/sfs/sfs.pas
index 157fbac3c2ccb3d20d5a811fecc34e9a1b6ea142..49f8f7603f24aa3127894783fe01b33a2e3b3073 100644 (file)
--- a/src/sfs/sfs.pas
+++ b/src/sfs/sfs.pas
// streaming file system (virtual)
-{$MODE DELPHI}
-{.$R-}
+{$MODE OBJFPC}
+{$R+}
{.$DEFINE SFS_VOLDEBUG}
unit sfs;
type
ESFSError = class(Exception);
- TSFSChar = AnsiChar;
- TSFSString = AnsiString;
-
TSFSVolume = class;
TSFSFileInfo = class
public
fOwner: TSFSVolume; // òàê, íà âñÿêèé ñëó÷àé
- fPath: TSFSString; // ðàçäåëèòåëè êàòàëîãîâ -- "/"; êîðåíü íèêàê íå îáîçíà÷åí, åñëè íå ïóñòîå, îáÿçàíî çàâåðøàåòñÿ "/"
- fName: TSFSString; // òîëüêî èìÿ
+ fPath: AnsiString; // ðàçäåëèòåëè êàòàëîãîâ -- "/"; êîðåíü íèêàê íå îáîçíà÷åí, åñëè íå ïóñòîå, îáÿçàíî çàâåðøàòüñÿ "/"
+ fName: AnsiString; // òîëüêî èìÿ
fSize: Int64; // unpacked
fOfs: Int64; // in VFS (many of 'em need this %-)
constructor Create (pOwner: TSFSVolume);
destructor Destroy (); override;
- property path: TSFSString read fPath;
- property name: TSFSString read fName;
- property size: Int64 read fSize;
+ property path: AnsiString read fPath;
+ property name: AnsiString read fName;
+ property size: Int64 read fSize; // can be -1 if size is unknown
end;
// âèðòóàëüíàÿ ôàéëîâàÿ ñèñòåìà. ÒÎËÜÊÎ ÄËß ×ÒÅÍÈß!
// òîì ÍÅ ÄÎËÆÅÍ óáèâàòüñÿ íèêàê èíà÷å, ÷åì ïðè ïîìîùè ôàáðèêè!
TSFSVolume = class
protected
- fRC: Integer; // refcounter for other objects
- fFileName: TSFSString;// îáû÷íî èìÿ îðèãèíàëüíîãî ôàéëà
+ fFileName: AnsiString;// îáû÷íî èìÿ îðèãèíàëüíîãî ôàéëà
fFileStream: TStream; // îáû÷íî ïîòîê äëÿ ÷òåíèÿ îðèãèíàëüíîãî ôàéëà
fFiles: TObjectList; // TSFSFileInfo èëè íàñëåäíèêè
// ýòà ïðîöåäóðà ìîæåò ìåíÿòü fFiles!
// fPath -- â ïðàâèëüíîé ôîðìå, ñ "/", êîðíåâîé "/" óáèò, ôèíàëüíûé äîáàâëåí.
// åñëè ôàéë íå íàéäåí, âåðíóòü -1.
- function FindFile (const fPath, fName: TSFSString): Integer; virtual;
+ function FindFile (const fPath, fName: AnsiString): Integer; virtual;
// âîçâðàùàåò êîëè÷åñòâî ôàéëîâ â fFiles
function GetFileCount (): Integer; virtual;
public
// pSt íå îáÿçàòåëüíî çàïîìèíàòü, åñëè îí íå íóæåí.
- constructor Create (const pFileName: TSFSString; pSt: TStream); virtual;
+ constructor Create (const pFileName: AnsiString; pSt: TStream); virtual;
// fFileStream óíè÷òîæàòü íåëüçÿ, åñëè îí ðàâåí ïàðàìåòðó pSt êîíñòðóêòîðà.
destructor Destroy (); override;
function OpenFileByIndex (const index: Integer): TStream; virtual; abstract;
// åñëè íå ñìîãëî îòêóïîðèòü ôàéëî (èëè åù¸ ãäå îøèáëîñü), çàøâûðí¸ò èñêëþ÷åíèå.
- function OpenFileEx (const fName: TSFSString): TStream; virtual;
+ function OpenFileEx (const fName: AnsiString): TStream; virtual;
property FileCount: Integer read GetFileCount; // ìîæåò âåðíóòü íîëü
// ìîæåò âîçâðàùàòü NIL.
// ôàéëà. åñëè íè îäíà ôàáðèêà ïðåôèêñ íå ïðèçíàåò, òî ôàéë íå îòêðîþò.
// èñïîëüçóåòñÿ äëÿ ñêèïàíèÿ àâòîäåòåêòà.
// SFS ÍÅ Ñ×ÈÒÀÅÒ ÏÐÅÔÈÊÑÎÌ ÑÒÐÎÊÓ ÊÎÐÎ×Å ÒÐ¨Õ ÑÈÌÂÎËÎÂ!
- function IsMyVolumePrefix (const prefix: TSFSString): Boolean; virtual; abstract;
+ function IsMyVolumePrefix (const prefix: AnsiString): Boolean; virtual; abstract;
// ïðîâåðÿåò, ìîæåò ëè ôàáðèêà ñäåëàòü òîì äëÿ äàííîãî ôàéëà.
// st -- îòêðûòûé äëÿ ÷òåíèÿ ôàéëîâé ïîòîê. óêàçàòåëü ÷òåíèÿ ñòîèò â íà÷àëå.
// ýòîò ïîòîê íåëüçÿ çàêðûâàòü!
// prefix: òî, ÷òî áûëî ïåðåäàíî â IsMyVolumePrefix() èëè ''.
// èñêëþ÷åíèå ñ÷èòàåòñÿ îøèáêîé, âîçâðàò NIL ñ÷èòàåòñÿ îøèáêîé.
- function Produce (const prefix, fileName: TSFSString; st: TStream): TSFSVolume; virtual; abstract;
+ function Produce (const prefix, fileName: AnsiString; st: TStream): TSFSVolume; virtual; abstract;
// êîãäà òîì áîëüøå íå íóæåí, îí áóäåò îòäàí ôàáðèêå íà ïåðåðàáîòêó.
// äàëåå äâèæîê íå áóäåò þçàòü ñåé òîì.
procedure Recycle (vol: TSFSVolume); virtual; abstract;
// è îáðàùàòüñÿ êàê "datafile::xxx".
// "||" ïðåîáðàçóþòñÿ â ïðîñòîé "|" è ðàçäåëèòåëåì íå ñ÷èòàþòñÿ.
// ïðèíèìàåòñÿ âî âíèìàíèå òîëüêî ïîñëåäíÿÿ òðóáà.
-function SFSAddDataFile (const dataFileName: TSFSString; top: Boolean=false): Boolean;
+function SFSAddDataFile (const dataFileName: AnsiString; top: Boolean=false): Boolean;
// äîáàâèòü ñáîðíèê âðåìåííî
-function SFSAddDataFileTemp (const dataFileName: TSFSString; top: Boolean=false): Boolean;
+function SFSAddDataFileTemp (const dataFileName: AnsiString; top: Boolean=false): Boolean;
// äîáàâèòü â ïîñòîÿííûé ñïèñîê ñáîðíèê èç ïîòîêà ds.
// åñëè âîçâðàùàåò èñòèíó, òî SFS ñòàíîâèòñÿ âëÿäåëüöåì ïîòîêà ds è ñàìà
@@ -183,21 +179,21 @@ function SFSAddDataFileTemp (const dataFileName: TSFSString; top: Boolean=false)
// âåðí¸ò ëîæü ïðè îøèáêå.
// îòêðûâàåò ñáîðíèê èç ïîòîêà. dataFileName -- ÂÈÐÒÓÀËÜÍÎÅ èìÿ.
// ò.å. íà ñàìîì äåëå òàêîãî ôàéëà ìîæåò è íå áûòü íà äèñêå.
-function SFSAddSubDataFile (const virtualName: TSFSString; ds: TStream; top: Boolean=false): Boolean;
+function SFSAddSubDataFile (const virtualName: AnsiString; ds: TStream; top: Boolean=false): Boolean;
// øâûðÿåòñÿ èñêëþ÷åíèÿìè.
// åñëè fName íå èìååò óêàçàíèÿ íà ôàéë äàííûõ (ýòî òî, ÷òî îòäåëåíî îò
// îñòàëüíîãî èìåíè äâîåòî÷èåì), òî èùåì ñíà÷àëà ïî âñåì çàðåãèñòðèðîâàííûì
// ôàéëàì äàííûõ, ïîòîì â òåêóùåì êàòàëîãå, ïîòîì â êàòàëîãå, îòêóäà ñòàðòîâàëè.
// åñëè íè÷åãî íå íàøëè, êèäàåì èñêëþ÷åíèå.
-function SFSFileOpenEx (const fName: TSFSString): TStream;
+function SFSFileOpenEx (const fName: AnsiString): TStream;
// ïðè îøèáêå -- NIL, è íèêàêèõ èñêëþ÷åíèé.
-function SFSFileOpen (const fName: TSFSString): TStream;
+function SFSFileOpen (const fName: AnsiString): TStream;
// âîçâðàùàåò NIL ïðè îøèáêå.
// ïîñëå èñïîëüçîâàíèÿ, íàòóðàëüíî, èòåðàòîð íàäî ãðîõíóòü %-)
-function SFSFileList (const dataFileName: TSFSString): TSFSFileList;
+function SFSFileList (const dataFileName: AnsiString): TSFSFileList;
// çàïðåòèòü îñâîáîæäåíèå âðåìåííûõ òîìîâ (ìîæíî âûçûâàòü ðåêóðñèâíî)
procedure sfsGCDisable ();
// for completeness sake
procedure sfsGCCollect ();
-function SFSReplacePathDelims (const s: TSFSString; newDelim: TSFSChar): TSFSString;
+function SFSReplacePathDelims (const s: AnsiString; newDelim: Char): AnsiString;
// ðàçîáðàòü òîëñòîå èìÿ ôàéëà, âåðíóòü âèðòóàëüíîå èìÿ ïîñëåäíåãî ñïèñêà
// èëè ïóñòóþ ñòîðîêó, åñëè ñïèñêîâ íå áûëî.
-function SFSGetLastVirtualName (const fn: TSFSString): string;
+function SFSGetLastVirtualName (const fn: AnsiString): AnsiString;
// Wildcard matching
// this code is meant to allow wildcard pattern matches. tt is VERY useful
// 'this [e-n]s a [!zy]est' -Would match 'this is a test', but would
// not match 'this as a yest'
//
-function WildMatch (pattern, text: TSFSString): Boolean;
-function WildListMatch (wildList, text: TSFSString; delimChar: AnsiChar=':'): Integer;
-function HasWildcards (const pattern: TSFSString): Boolean;
+function WildMatch (pattern, text: AnsiString): Boolean;
+function WildListMatch (wildList, text: AnsiString; delimChar: AnsiChar=':'): Integer;
+function HasWildcards (const pattern: AnsiString): Boolean;
var
// òåêóùåì. êàòàëîãè ðàçäåëÿþòñÿ òðóáîé ("|").
// <currentdir> çàìåíÿåòñÿ íà òåêóùèé êàòàëîã (ñ çàâåðøàþùèì "/"),
// <exedir> çàìåíÿåòñÿ íà êàòàëîã, ãäå ñèäèò .EXE (ñ çàâåðøàþùèì "/").
- sfsDiskDirs: TSFSString = '<currentdir>|<exedir>';
+ sfsDiskDirs: AnsiString = '<currentdir>|<exedir>';
implementation
WILD_CHAR_RANGE_NOT = '!';
-function HasWildcards (const pattern: TSFSString): Boolean;
+function HasWildcards (const pattern: AnsiString): Boolean;
begin
result :=
(Pos(WILD_CHAR_ESCAPE, pattern) <> 0) or
(Pos(WILD_CHAR_RANGE_OPEN, pattern) <> 0);
end;
-function MatchMask (const pattern: TSFSString; p, pend: Integer; const text: TSFSString; t, tend: Integer): Boolean;
+function MatchMask (const pattern: AnsiString; p, pend: Integer; const text: AnsiString; t, tend: Integer): Boolean;
var
rangeStart, rangeEnd: AnsiChar;
rangeNot, rangeMatched: Boolean;
end;
-function WildMatch (pattern, text: TSFSString): Boolean;
+function WildMatch (pattern, text: AnsiString): Boolean;
begin
if pattern <> '' then pattern := AnsiLowerCase(pattern);
if text <> '' then text := AnsiLowerCase(text);
result := MatchMask(pattern, 1, -1, text, 1, -1);
end;
-function WildListMatch (wildList, text: TSFSString; delimChar: AnsiChar=':'): Integer;
+function WildListMatch (wildList, text: AnsiString; delimChar: AnsiChar=':'): Integer;
var
s, e: Integer;
begin
TVolumeInfo = class
fFactory: TSFSVolumeFactory;
fVolume: TSFSVolume;
- fPackName: TSFSString; // äëÿ îäíîãî è òîãî æå ôàéëà áóäåò òîëüêî îäèí òîì!
+ fPackName: AnsiString; // äëÿ îäíîãî è òîãî æå ôàéëà áóäåò òîëüêî îäèí òîì!
fStream: TStream; // ôàéëîâûé ïîòîê äëÿ ñáîðíèêà
fPermanent: Boolean; // èñòèíà -- íå áóäåò óãðîáëåíà, åñëè íå îñòàíåòñÿ íè îäíîãî îòêðûòîãî òîìà
// èñòèíà -- ýòîò òîì áûë ñîçäàí èç ïîòîêà è íå èìååò äèñêîâîãî ôàéëà, ïîòîìó ôàáðèêå áóäåò ïåðåäàíî íå èìÿ ñáîðíèêà, à ïóñòàÿ ñòðîêà
begin
vi := TVolumeInfo(volumes[f]);
if vi = nil then continue;
- if (not vi.fPermanent) and (vi.fVolume.fRC = 0) and (vi.fOpenedFilesCount = 0) then
+ if (not vi.fPermanent) and (vi.fOpenedFilesCount = 0) then
begin
// this volume probably can be removed
used := false;
// ñîáñòâåííî èìÿ ôàéëà
// èìÿ âûãëÿäèò êàê:
// (("sfspfx:")?"datafile::")*"filename"
-procedure SplitFName (const fn: string; out dataFile, fileName: string);
+procedure SplitFName (const fn: AnsiString; out dataFile, fileName: AnsiString);
var
f: Integer;
begin
end;
// ñàéäýôôåêò: âûðåçàåò âèðòóàëüíîå èìÿ èç dataFile.
-function ExtractVirtName (var dataFile: string): string;
+function ExtractVirtName (var dataFile: AnsiString): AnsiString;
var
f: Integer;
begin
// [sfspfx:]datafile[|virtname]
// åñëè ïåðåä äâîåòî÷èåì ìåíüøå òð¸õ áóêâ, òî ýòî ñ÷èòàåòñÿ íå ïðåôèêñîì,
// à èìåíåì äèñêà.
-procedure SplitDataName (const fn: string; out pfx, dataFile, virtName: string);
+procedure SplitDataName (const fn: AnsiString; out pfx, dataFile, virtName: AnsiString);
var
f: Integer;
begin
// íàéòè ïðîèçâîäèòåëÿ äëÿ ýòîãî ôàéëà (åñëè ôàéë óæå îòêðûò).
// onlyPerm: òîëüêî "ïîñòîÿííûå" ïðîèçâîäèòåëè.
-function FindVolumeInfo (const dataFileName: TSFSString; onlyPerm: Boolean=false): Integer;
+function FindVolumeInfo (const dataFileName: AnsiString; onlyPerm: Boolean=false): Integer;
var
f: Integer;
vi: TVolumeInfo;
// adds '/' too
-function normalizePath (fn: string): string;
+function normalizePath (fn: AnsiString): AnsiString;
var
i: Integer;
begin
if (length(result) > 0) and (result[length(result)] <> '/') then result := result+'/';
end;
-function SFSReplacePathDelims (const s: TSFSString; newDelim: TSFSChar): TSFSString;
+function SFSReplacePathDelims (const s: AnsiString; newDelim: Char): AnsiString;
var
f: Integer;
begin
end;
end;
-function SFSGetLastVirtualName (const fn: TSFSString): string;
+function SFSGetLastVirtualName (const fn: AnsiString): AnsiString;
var
- rest, tmp: string;
+ rest, tmp: AnsiString;
f: Integer;
begin
rest := fn;
used: Boolean; // ôëàæîê çàþçàíîñòè ïîòîêà êåì-òî åù¸
begin
if fFactory <> nil then fFactory.Recycle(fVolume);
- if fVolume <> nil then used := (fVolume.fRC <> 0) else used := false;
+ used := false;
fVolume := nil;
fFactory := nil;
fPackName := '';
{ TSFSVolume }
-constructor TSFSVolume.Create (const pFileName: TSFSString; pSt: TStream);
+constructor TSFSVolume.Create (const pFileName: AnsiString; pSt: TStream);
begin
inherited Create();
- fRC := 0;
fFileStream := pSt;
fFileName := pFileName;
fFiles := TObjectList.Create(true);
var
f, c: Integer;
sfi: TSFSFileInfo;
- tmp: TSFSString;
+ tmp: AnsiString;
begin
fFileName := ExpandFileName(SFSReplacePathDelims(fFileName, '/'));
ReadDirectory();
procedure TSFSVolume.Clear ();
begin
- fRC := 0; //FIXME
fFiles.Clear();
end;
-function TSFSVolume.FindFile (const fPath, fName: TSFSString): Integer;
+function TSFSVolume.FindFile (const fPath, fName: AnsiString): Integer;
begin
if fFiles = nil then result := -1
else
end;
end;
-function TSFSVolume.OpenFileEx (const fName: TSFSString): TStream;
+function TSFSVolume.OpenFileEx (const fName: AnsiString): TStream;
var
- fp, fn: TSFSString;
+ fp, fn: AnsiString;
f, ls: Integer;
begin
fp := fName;
begin
f := FindVolumeInfoByVolumeInstance(fVolume);
ASSERT(f <> -1);
- if fVolume <> nil then Dec(fVolume.fRC);
Dec(TVolumeInfo(volumes[f]).fOpenedFilesCount);
// óáü¸ì çàïèñü, åñëè îíà âðåìåííàÿ, è â íåé íåò áîëüøå íè÷åãî îòêðûòîãî
if (gcdisabled = 0) and not TVolumeInfo(volumes[f]).fPermanent and (TVolumeInfo(volumes[f]).fOpenedFilesCount < 1) then
end;
-function SFSAddDataFileEx (dataFileName: TSFSString; ds: TStream; top, permanent: Integer): Integer;
+function SFSAddDataFileEx (dataFileName: AnsiString; ds: TStream; top, permanent: Integer): Integer;
// dataFileName ìîæåò èìåòü ïðåôèêñ òèïà "zip:" (ñì. âûøå: IsMyPrefix).
// ìîæåò âûêèíóòü èñêëþ÷åíèå!
// top:
vi: TVolumeInfo;
f: Integer;
st, st1: TStream;
- pfx: TSFSString;
- fn, vfn, tmp: TSFSString;
+ pfx: AnsiString;
+ fn, vfn, tmp: AnsiString;
begin
f := Pos('::', dataFileName);
if f <> 0 then
vi.fOpenedFilesCount := 0;
end;
-function SFSAddSubDataFile (const virtualName: TSFSString; ds: TStream; top: Boolean=false): Boolean;
+function SFSAddSubDataFile (const virtualName: AnsiString; ds: TStream; top: Boolean=false): Boolean;
var
tv: Integer;
begin
end;
end;
-function SFSAddDataFile (const dataFileName: TSFSString; top: Boolean=false): Boolean;
+function SFSAddDataFile (const dataFileName: AnsiString; top: Boolean=false): Boolean;
var
tv: Integer;
begin
end;
end;
-function SFSAddDataFileTemp (const dataFileName: TSFSString; top: Boolean=false): Boolean;
+function SFSAddDataFileTemp (const dataFileName: AnsiString; top: Boolean=false): Boolean;
var
tv: Integer;
begin
-function SFSExpandDirName (const s: TSFSString): TSFSString;
+function SFSExpandDirName (const s: AnsiString): AnsiString;
var
f, e: Integer;
- es: TSFSString;
+ es: AnsiString;
begin
f := 1; result := s;
while f < Length(result) do
end;
end;
-function SFSFileOpenEx (const fName: TSFSString): TStream;
+function SFSFileOpenEx (const fName: AnsiString): TStream;
var
- dataFileName, fn: TSFSString;
+ dataFileName, fn: AnsiString;
f: Integer;
vi: TVolumeInfo;
diskChecked: Boolean;
function CheckDisk (): TStream;
// ïðîâåðèì, åñòü ëè ôàëî fn ãäå-òî íà äèñêàõ.
var
- dfn, dirs, cdir: TSFSString;
+ dfn, dirs, cdir: AnsiString;
f: Integer;
begin
result := nil;
if result = nil then raise ESFSError.Create('file not found: "'+fName+'"');
end;
-function SFSFileOpen (const fName: TSFSString): TStream;
+function SFSFileOpen (const fName: AnsiString): TStream;
begin
try
result := SFSFileOpenEx(fName);
end;
end;
-function SFSFileList (const dataFileName: TSFSString): TSFSFileList;
+function SFSFileList (const dataFileName: AnsiString): TSFSFileList;
var
f: Integer;
vi: TVolumeInfo;
try
result := TSFSFileList.Create(vi.fVolume);
- Inc(vi.fVolume.fRC);
except
if (gcdisabled = 0) and not vi.fPermanent and (vi.fOpenedFilesCount < 1) then volumes[f] := nil;
end;