From: Ketmar Dark <ketmar@ketmar.no-ip.org>
Date: Fri, 8 Apr 2016 18:58:06 +0000 (+0300)
Subject: wadcvt: guess some extensions
X-Git-Url: http://deadsoftware.ru/gitweb?p=d2df-sdl.git;a=commitdiff_plain;h=26a9499f81fee3459a53828e13dff6ae8ad4304a

wadcvt: guess some extensions
---

diff --git a/src/sfs/wadcvt.dpr b/src/sfs/wadcvt.dpr
index b1bb786..bd5933e 100644
--- a/src/sfs/wadcvt.dpr
+++ b/src/sfs/wadcvt.dpr
@@ -15,6 +15,145 @@ uses
   zipper;
 
 
+type
+  TProg = class(TObject)
+    lastname: string;
+    lastlen: Integer;
+
+    procedure putStr (const s: string; newline: Boolean=false);
+
+    procedure onProgress (sender: TObject; const percent: double);
+    procedure onFileStart (sender: TObject; const fileName: string);
+    procedure onFileEnd (sender: TObject; const ratio: double);
+  end;
+
+
+procedure TProg.putStr (const s: string; newline: Boolean=false);
+begin
+  write(#13, s);
+  while lastlen > length(s) do
+  begin
+    write(' ');
+    Dec(lastlen);
+  end;
+  if newline then
+  begin
+    writeln;
+    lastlen := 0;
+  end
+  else
+  begin
+    lastlen := length(s);
+  end;
+end;
+
+procedure TProg.onProgress (sender: TObject; const percent: double);
+var
+  prc: Integer;
+begin
+  prc := trunc(percent*100.0);
+  putStr(Format('compressing %-33s  %3d%%', [lastname, prc]));
+end;
+
+procedure TProg.onFileStart (sender: TObject; const fileName: string);
+begin
+  lastname := fileName;
+  putStr(Format('compressing %-33s  %3d%%', [lastname, 0]));
+end;
+
+procedure TProg.onFileEnd (sender: TObject; const ratio: double);
+begin
+  putStr(Format('compressed  %-33s  %f', [lastname, ratio]), true);
+end;
+
+
+// returns new file name
+function detectExt (fpath, fname: string; fs: TStream): string;
+var
+  buf: PChar;
+  buflen: Integer;
+  f: Integer;
+  st: string[24];
+begin
+  result := fname;
+  if length(ExtractFileExt(fname)) <> 0 then exit;
+  if fs.size < 16 then exit;
+  buflen := Integer(fs.size);
+  GetMem(buf, buflen);
+  try
+    fs.ReadBuffer(buf^, buflen);
+    // xm
+    Move(buf^, (PChar(@st[1]))^, 16);
+    st[0] := #16;
+    if (st = 'Extended Module:') then
+    begin
+      result := result+'.xm';
+      exit;
+    end;
+    if (buf[0] = 'D') and (buf[1] = 'F') and (buf[2] = 'W') and
+       (buf[3] = 'A') and (buf[4] = 'D') and (buf[5] = #$1) then
+    begin
+      result := result+'.wad';
+      exit;
+    end;
+    if (buf[0] = 'M') and (buf[1] = 'A') and (buf[2] = 'P') and (buf[3] = #$1) then
+    begin
+      result := result+'.dfmap';
+      exit;
+    end;
+    if (buf[0] = 'M') and (buf[1] = 'T') and (buf[2] = 'h') and (buf[3] = 'd') then
+    begin
+      result := result+'.mid';
+      exit;
+    end;
+    if (buf[0] = 'R') and (buf[1] = 'I') and (buf[2] = 'F') and (buf[3] = 'F') and
+       (buf[8] = 'W') and (buf[9] = 'A') and (buf[10] = 'V') and (buf[11] = 'E') then
+    begin
+      result := result+'.wav';
+      exit;
+    end;
+    // mp3 (stupid hack)
+    for f := 0 to 128-6 do
+    begin
+      if (buf[f+0] = #$4) and (buf[f+1] = 'L') and
+         (buf[f+2] = 'A') and (buf[f+3] = 'M') and
+         (buf[f+4] = 'E') and (buf[f+5] = '3') then
+      begin
+        result := result+'.mp3';
+        exit;
+      end;
+    end;
+    // more mp3 hacks
+    if (buf[0] = 'I') and (buf[1] = 'D') and (buf[2] = '3') and (buf[3] <= #4) then
+    begin
+      result := result+'.mp3';
+      exit;
+    end;
+    if buflen > 128 then
+    begin
+      if (buf[buflen-128] = 'T') and (buf[buflen-127] = 'A') and (buf[buflen-126] = 'G') then
+      begin
+        result := result+'.mp3';
+        exit;
+      end;
+    end;
+    // targa (stupid hack; this "signature" is not required by specs)
+    if buflen >= 18 then
+    begin
+      Move((buf+buflen-18)^, (PChar(@st[1]))^, 16);
+      st[0] := #16;
+      if st = 'TRUEVISION-XFILE' then
+      begin
+        result := result+'.tga';
+        exit;
+      end;
+    end;
+  finally
+    FreeMem(buf);
+  end;
+end;
+
+
 var
   fs: TStream;
   fl: TSFSFileList;
@@ -24,6 +163,8 @@ var
   zip: TZipper;
   dvfn: string;
   ZEntries: TZipFileEntries;
+  newname: string;
+  prg: TProg;
 begin
   if ParamCount() < 1 then
   begin
@@ -77,14 +218,22 @@ begin
     begin
       if length(fl[f].fName) = 0 then continue;
       fs := SFSFileOpen(dvfn+'::'+fl[f].fPath+fl[f].fName);
-      writeln('[', f+1, '/', fl.Count, ']: ', fl[f].fPath+fl[f].fName, '  ', fs.size);
-      ZEntries.AddFileEntry(fs, fl[f].fPath+fl[f].fName);
+      newname := detectExt(fl[f].fPath, fl[f].fName, fs);
+      fs.Free;
+      fs := SFSFileOpen(dvfn+'::'+fl[f].fPath+fl[f].fName);
+      writeln('[', f+1, '/', fl.Count, ']: ', fl[f].fPath+newname, '  ', fs.size);
+      ZEntries.AddFileEntry(fs, fl[f].fPath+newname);
     end;
     try
       if ZEntries.Count > 0 then
       begin
         writeln('creating ''', outfname, '''');
+        prg := TProg.Create();
+        zip.OnProgress := prg.onProgress;
+        zip.OnStartFile := prg.onFileStart;
+        zip.OnEndFile := prg.onFileEnd;
         zip.ZipFiles(ZEntries);
+        prg.Free;
       end;
     except
       on E: EZipError do E.CreateFmt('Zipfile could not be created%sReason: %s', [LineEnding, E.Message])