diff --git a/src/shared/utils.pas b/src/shared/utils.pas
index 21172272a8a01ca64132494ddeed01fb63b0d27c..a3a650070a1ff1ef05791ee85676edd231259dd1 100644 (file)
--- a/src/shared/utils.pas
+++ b/src/shared/utils.pas
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ * the Free Software Foundation, version 3 of the License ONLY.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
interface
uses
- SysUtils, Classes;
+ SysUtils, Classes, md5;
// ////////////////////////////////////////////////////////////////////////// //
SSArray = array of ShortString;
+const wadExtensions: array [0..6] of AnsiString = (
+ '.dfz',
+ '.wad',
+ '.dfwad',
+ '.pk3',
+ '.pak',
+ '.zip',
+ '.dfzip'
+);
+
+
// ////////////////////////////////////////////////////////////////////////// //
type
TUtf8DecoderFast = packed record
// adds ".wad" extension if filename doesn't have one of ".wad", ".pk3", ".zip"
function addWadExtension (const fn: AnsiString): AnsiString;
+// check wad signature
+function isWadData (data: Pointer; len: LongWord): Boolean;
+
// convert number to strig with nice commas
function int64ToStrComma (i: Int64): AnsiString;
function upcase1251 (ch: AnsiChar): AnsiChar; inline;
function locase1251 (ch: AnsiChar): AnsiChar; inline;
+function IsValid1251 (ch: Word): Boolean;
+function IsPrintable1251 (ch: AnsiChar): Boolean;
function toLowerCase1251 (const s: AnsiString): AnsiString;
function utf8to1251 (s: AnsiString): AnsiString;
-// `pathname` will be modified if path is valid
-// `lastIsDir` should be `true` if we are searching for directory
-// nobody cares about shitdoze, so i'll use the same code path for it
+// findFileCI takes case-insensitive path, traverses it, and rewrites it to
+// a case-sensetive one (using real on-disk names). return value means 'success'.
+// if some dir or file wasn't found, pathname is undefined (destroyed, but not
+// necessarily cleared).
+// last name assumed to be a file, not directory (unless `lastIsDir` flag is set).
function findFileCI (var pathname: AnsiString; lastIsDir: Boolean=false): Boolean;
-// return fixed AnsiString or empty AnsiString
+// findDiskWad tries to find the wad file using common wad extensions
+// (see `wadExtensions` array).
+// returns real on-disk filename, or empty string.
+// original wad extension is used as a hint for the first try.
+// also, this automatically performs `findFileCI()`.
function findDiskWad (fname: AnsiString): AnsiString;
+// slashes must be normalized!
+function isWadNamesEqu (wna, wnb: AnsiString): Boolean;
// they throws
function openDiskFileRO (pathname: AnsiString): TStream;
function createDiskFile (pathname: AnsiString): TStream;
+// create file if necessary, but don't truncate the existing one
+function openDiskFileRW (pathname: AnsiString): TStream;
// little endian
procedure writeSign (st: TStream; const sign: AnsiString);
procedure ZeroMemory (Dest: Pointer; Len: LongWord); inline;
+type
+ TDiskFileInfo = record
+ diskName: AnsiString;
+ size: LongInt;
+ age: LongInt;
+ // not changed by info getter; used in other parts of the code
+ userName: AnsiString;
+ tag: Integer;
+ hash: TMD5Digest;
+ udata: Pointer;
+ end;
+
+function GetDiskFileInfo (fname: AnsiString; var info: TDiskFileInfo): Boolean;
+
+
implementation
uses
xstreams;
-
// ////////////////////////////////////////////////////////////////////////// //
procedure CopyMemory (Dest: Pointer; Src: Pointer; Len: LongWord); inline;
begin
function hasWadExtension (const fn: AnsiString): Boolean;
var
- ext: AnsiString;
+ ext, newExt: AnsiString;
begin
ext := getFilenameExt(fn);
- result := StrEquCI1251(ext, '.wad') or StrEquCI1251(ext, '.pk3') or StrEquCI1251(ext, '.zip') or StrEquCI1251(ext, '.dfz');
+ result := true;
+ for newExt in wadExtensions do if (StrEquCI1251(ext, newExt)) then exit;
+ result := false;
+ //result := StrEquCI1251(ext, '.wad') or StrEquCI1251(ext, '.pk3') or StrEquCI1251(ext, '.zip') or StrEquCI1251(ext, '.dfz');
end;
end;
+function isWadData (data: Pointer; len: LongWord): Boolean;
+ var p: PChar;
+begin
+ p := PChar(data);
+ Result :=
+ (* ZIP *)
+ ((len > 3) and (p[0] = 'P') and (p[1] = 'K') and (p[2] = #03) and (p[3] = #04)) or
+ ((len > 3) and (p[0] = 'P') and (p[1] = 'K') and (p[2] = #05) and (p[3] = #06)) or
+ (* PACK *)
+ ((len > 3) and (p[0] = 'P') and (p[1] = 'A') and (p[2] = 'C') and (p[3] = 'K')) or
+ ((len > 3) and (p[0] = 'S') and (p[1] = 'P') and (p[2] = 'A') and (p[3] = 'K')) or
+ (* DFWAD *)
+ ((len > 5) and (p[0] = 'D') and (p[1] = 'F') and (p[2] = 'W') and (p[3] = 'A') and (p[4] = 'D') and (p[5] = #01))
+end;
+
+
function isWadPath (const fn: AnsiString): Boolean;
var
pos: Integer;
result := ch;
end;
+function IsValid1251 (ch: Word): Boolean;
+begin
+ result := (ch = Ord('?')) or (wc2shitmap[ch] <> '?')
+end;
+
+function IsPrintable1251 (ch: AnsiChar): Boolean;
+begin
+ result := (ch >= #32) and (ch <> #127)
+end;
+
function strEquCI1251 (const s0, s1: AnsiString): Boolean;
var
// ////////////////////////////////////////////////////////////////////////// //
-// `pathname` will be modified if path is valid
-// `lastIsDir` should be `true` if we are searching for directory
-// nobody cares about shitdoze, so i'll use the same code path for it
+// findFileCI eats case-insensitive path, traverses it and rewrites it to a
+// case-sensetive. result value means success.
+// if file/dir not founded than pathname is in undefined state!
function findFileCI (var pathname: AnsiString; lastIsDir: Boolean=false): Boolean;
var
sr: TSearchRec;
end;
-const fileExtensions: array [0..6] of AnsiString = ('.dfz', '.wad', '.dfwad', '.pk3', '.pak', '.zip', '.dfzip');
+function isWadNamesEqu (wna, wnb: AnsiString): Boolean;
+var
+ ext, newExt: AnsiString;
+ found: Boolean;
+begin
+ result := StrEquCI1251(wna, wnb);
+ if result then exit;
+ // check first ext
+ ext := getFilenameExt(wna);
+ found := false;
+ for newExt in wadExtensions do if (StrEquCI1251(ext, newExt)) then begin found := true; break; end;
+ if not found then exit;
+ // check second ext
+ ext := getFilenameExt(wnb);
+ found := false;
+ for newExt in wadExtensions do if (StrEquCI1251(ext, newExt)) then begin found := true; break; end;
+ if not found then exit;
+ wna := forceFilenameExt(wna, '');
+ wnb := forceFilenameExt(wnb, '');
+ result := StrEquCI1251(wna, wnb);
+end;
function findDiskWad (fname: AnsiString): AnsiString;
var
origExt := getFilenameExt(fname);
fname := forceFilenameExt(fname, '');
//writeln(' findDiskWad01: fname=<', fname, '>; origExt=<', origExt, '>');
- for newExt in fileExtensions do
+ for newExt in wadExtensions do
begin
//writeln(' findDiskWad02: fname=<', fname, '>; origExt=<', origExt, '>; newExt=<', newExt, '>');
if (StrEquCI1251(newExt, origExt)) then
function openDiskFileRO (pathname: AnsiString): TStream;
begin
- if not findFileCI(pathname) then raise Exception.Create('can''t open file "'+pathname+'"');
+ if not findFileCI(pathname) then raise EFileNotFoundException.Create('can''t open file "'+pathname+'"');
result := TFileStream.Create(pathname, fmOpenRead or {fmShareDenyWrite}fmShareDenyNone);
end;
end;
+function openDiskFileRW (pathname: AnsiString): TStream;
+var
+ path: AnsiString;
+ oldname: AnsiString;
+begin
+ //writeln('*** TRYING R/W FILE "', pathname, '"');
+ path := ExtractFilePath(pathname);
+ if length(path) > 0 then
+ begin
+ if not findFileCI(path, true) then raise Exception.Create('can''t create file "'+pathname+'"');
+ end;
+ oldname := pathname;
+ if findFileCI(oldname) then
+ begin
+ //writeln('*** found old file "', oldname, '"');
+ result := TFileStream.Create(oldname, fmOpenReadWrite or fmShareDenyWrite);
+ end
+ else
+ begin
+ result := TFileStream.Create(path+ExtractFileName(pathname), fmCreate);
+ end;
+end;
+
+
procedure writeIntegerLE (st: TStream; vp: Pointer; size: Integer);
{$IFDEF ENDIAN_LITTLE}
begin
end;
+function GetDiskFileInfo (fname: AnsiString; var info: TDiskFileInfo): Boolean;
+var
+ age: LongInt;
+ size: LongInt;
+ handle: THandle;
+begin
+ result := false;
+ if (length(fname) = 0) then exit;
+ if not findFileCI(fname) then exit;
+ // get age
+ age := FileAge(fname);
+ if (age = -1) then exit;
+ // get size
+ handle := FileOpen(fname, fmOpenRead or fmShareDenyNone);
+ if (handle = THandle(-1)) then exit;
+ size := FileSeek(handle, 0, fsFromEnd);
+ FileClose(handle);
+ if (size = -1) then exit;
+ // fill info
+ info.diskName := fname;
+ info.size := size;
+ info.age := age;
+ result := true;
+end;
+
+
(*
var
ss: ShortString;