X-Git-Url: https://deadsoftware.ru/gitweb?a=blobdiff_plain;f=src%2Fshared%2Futils.pas;h=14fa53b94eecb7425bbb1d8b8746eb4e412a5826;hb=2d2ce4c1770a59c3e780f3fd31249ce6043f374c;hp=a854ca45bc922f155465ed98a32daad0710ced8c;hpb=75125c8752adeb3dc9e2ea3841b3b64dc23268ce;p=d2df-sdl.git

diff --git a/src/shared/utils.pas b/src/shared/utils.pas
index a854ca4..14fa53b 100644
--- a/src/shared/utils.pas
+++ b/src/shared/utils.pas
@@ -18,7 +18,7 @@ unit utils;
 interface
 
 uses
-  SysUtils, Classes;
+  SysUtils, Classes, md5;
 
 
 // ////////////////////////////////////////////////////////////////////////// //
@@ -26,6 +26,17 @@ type
   SSArray = array of ShortString;
 
 
+const wadExtensions: array [0..6] of AnsiString = (
+  '.dfz',
+  '.wad',
+  '.dfwad',
+  '.pk3',
+  '.pak',
+  '.zip',
+  '.dfzip'
+);
+
+
 // ////////////////////////////////////////////////////////////////////////// //
 type
   TUtf8DecoderFast = packed record
@@ -60,6 +71,12 @@ function getFilenameExt (const fn: AnsiString): AnsiString;
 function setFilenameExt (const fn, ext: AnsiString): AnsiString;
 function forceFilenameExt (const fn, ext: AnsiString): AnsiString;
 
+// rewrites slashes to '/'
+function fixSlashes (s: AnsiString): AnsiString;
+
+function isAbsolutePath (const s: AnsiString): Boolean;
+function isRootPath (const s: AnsiString): Boolean;
+
 // strips out name from `fn`, leaving trailing slash
 function getFilenamePath (const fn: AnsiString): AnsiString;
 
@@ -87,6 +104,8 @@ 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;
 
@@ -97,12 +116,18 @@ function utf8Valid (const s: AnsiString): Boolean;
 
 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;
@@ -110,6 +135,8 @@ 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);
@@ -275,12 +302,26 @@ procedure CopyMemory (Dest: Pointer; Src: Pointer; Len: LongWord); inline;
 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
@@ -298,6 +339,43 @@ begin
 end;
 
 
+// ////////////////////////////////////////////////////////////////////////// //
+// rewrites slashes to '/'
+function fixSlashes (s: AnsiString): AnsiString;
+var
+  f: Integer;
+begin
+  result := s;
+  for f := 1 to length(result) do if (result[f] = '\') then result[f] := '/';
+end;
+
+
+function isAbsolutePath (const s: AnsiString): Boolean;
+begin
+  result := false;
+  if (length(s) = 0) then exit;
+  {$IFDEF WINDOWS}
+  if (s[1] = '/') or (s[1] = '\') then begin result := true; exit; end;
+  if (length(s) > 2) and (s[2] = ':') and ((s[3] = '/') or (s[3] = '\')) then begin result := true; exit; end;
+  {$ELSE}
+  result := (s[1] = '/');
+  {$ENDIF}
+end;
+
+
+function isRootPath (const s: AnsiString): Boolean;
+begin
+  result := false;
+  if (length(s) = 0) then exit;
+  {$IFDEF WINDOWS}
+  if (s = '/') or (s = '\') then begin result := true; exit; end;
+  if (length(s) = 3) and (s[2] = ':') and ((s[3] = '/') or (s[3] = '\')) then begin result := true; exit; end;
+  {$ELSE}
+  result := (s = '/');
+  {$ENDIF}
+end;
+
+
 // ////////////////////////////////////////////////////////////////////////// //
 constructor TSimpleList.TEnumerator.Create (const aitems: TItemArr; acount: Integer);
 begin
@@ -430,7 +508,7 @@ var
 const
   cp1251: array[0..127] of Word = (
     $0402,$0403,$201A,$0453,$201E,$2026,$2020,$2021,$20AC,$2030,$0409,$2039,$040A,$040C,$040B,$040F,
-    $0452,$2018,$2019,$201C,$201D,$2022,$2013,$2014,$003F,$2122,$0459,$203A,$045A,$045C,$045B,$045F,
+    $0452,$2018,$2019,$201C,$201D,$2022,$2013,$2014,$FFFD,$2122,$0459,$203A,$045A,$045C,$045B,$045F,
     $00A0,$040E,$045E,$0408,$00A4,$0490,$00A6,$00A7,$0401,$00A9,$0404,$00AB,$00AC,$00AD,$00AE,$0407,
     $00B0,$00B1,$0406,$0456,$0491,$00B5,$00B6,$00B7,$0451,$2116,$0454,$00BB,$0458,$0405,$0455,$0457,
     $0410,$0411,$0412,$0413,$0414,$0415,$0416,$0417,$0418,$0419,$041A,$041B,$041C,$041D,$041E,$041F,
@@ -814,10 +892,13 @@ end;
 
 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;
 
 
@@ -827,6 +908,7 @@ begin
   if not hasWadExtension(result) then result := result+'.wad';
 end;
 
+
 function isWadData (data: Pointer; len: LongWord): Boolean;
   var p: PChar;
 begin
@@ -846,7 +928,7 @@ end;
 function isWadPath (const fn: AnsiString): Boolean;
 var
   pos: Integer;
-  s: AnsiString;
+  s, wext: AnsiString;
 begin
   result := false;
   pos := 1;
@@ -858,10 +940,13 @@ begin
       if (pos-4 > 1) and (fn[pos-4] = '.') and ((fn[pos+1] = '\') or (fn[pos+1] = '/')) then
       begin
         s := Copy(fn, pos-4, 4);
-        if StrEquCI1251(s, '.wad') or StrEquCI1251(s, '.pk3') or StrEquCI1251(s, '.zip') or StrEquCI1251(s, '.dfz') then
+        for wext in wadExtensions do
         begin
-          result := true;
-          exit;
+          if strEquCI1251(s, wext) then
+          begin
+            result := true;
+            exit;
+          end;
         end;
       end;
     end;
@@ -930,6 +1015,16 @@ begin
   result := ch;
 end;
 
+function IsValid1251 (ch: Word): Boolean;
+begin
+  result := ((ch = Ord('?')) or (wc2shitmap[ch] <> '?')) and (ch <> $98)
+end;
+
+function IsPrintable1251 (ch: AnsiChar): Boolean;
+begin
+  result := (ch >= #32) and (ch <> #127) and (ch <> #$98)
+end;
+
 
 function strEquCI1251 (const s0, s1: AnsiString): Boolean;
 var
@@ -1080,9 +1175,9 @@ end;
 
 
 // ////////////////////////////////////////////////////////////////////////// //
-// `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;
@@ -1148,8 +1243,6 @@ begin
 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;
@@ -1160,12 +1253,12 @@ begin
   // check first ext
   ext := getFilenameExt(wna);
   found := false;
-  for newExt in fileExtensions do if (StrEquCI1251(ext, newExt)) then begin found := true; break; end;
+  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 fileExtensions do if (StrEquCI1251(ext, newExt)) then begin found := true; break; end;
+  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, '');
@@ -1183,7 +1276,7 @@ begin
   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
@@ -1217,6 +1310,30 @@ begin
 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
@@ -1959,6 +2076,32 @@ 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;