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program OLGA_archiver; {(C) 1995 by Sven Winnecke.
  This program is made to handle OLGA's all*.tar.gz files. You have several
  options to choose the files you'd like to get.
  It is _neccesary_ to have the following files in the current archive:
    * the allpt*.* files
    * the all.idx file, which is made by calling tar -tvf all_pt#.tgz,
      copying them together and removing all lines concerning links and
    * the tar and tvedit executables. 
  See also the readme.now file.
  Any comments/questions/complains to: sven.winnecke@mb2.tu-chemnitz.de. }

{$M 16384,0,65536}  { preserve space for the external programs }
{$V-}

uses crt,dos,bold;

const hlp=' Press F1 for help.  (Pg/Pg,/,Home/End,SPACE,Return, w,c,s,u,e,o, ESC)';
      ent=455;
      months:array [1..12] of string [3]=('jan','feb','mar','apr','may','jun','jul','aug',
                            'sep','oct','nov','dec');

type alink    = ^archtype;     { for assigning the entries to the tar files }
     archtype = record
                  name  : string;  { name of tar file         }
                  first : char;    { 1st valid character      }
                  last  : char;    { last  "       "          }
                  count : integer; { count of matching items  }
                  Next  : alink;   { link to next element     }
                end;

var f,ta,ts : text;        { file variables: f=index file, ta=response file  }
    fi      : file of byte;{ for determining the file size of the resp. file }
    s,t,su  : string;      { temp. strings                                   }
    i,j,k,y : integer;     { temp. variables, for loops and so on            }
{    x       : integer;     { column where actual data starts                 }
    a       : array [0..ent] of string[128]; { list of the current items     }
    h,v,b,z : word;        { for mouse handling                              }
    mouse   : boolean;     { flag 'Is mouse driver already initialized ?'    }
    to_ma   : boolean;     { flag 'Too many items match search criteria.'    }
    no_upd  : boolean;     { flag 'don't re-read index file' (after 'w'/'c'  }
    sorted  : boolean;     { flag 'index file is sorted'                     }
    c       : char;        { for readkey waits                               }
    anc,cur,hp : alink;    { anchor of tar spec list, current & temp. pointer}
    sr      : SearchRec;   { for checking if files are present               }
    by      : byte;

procedure mpos;   { get the mouse position and buttons }
begin
  asm
    mov ax,0003h
    int 33h             { mouse position: dx=vert., cx=horic., bx=buttons, }
    mov h,cx            { buttons: bit 0 = left button, bit 1 = right      }
    mov v,dx
    and bx,0003h
    mov b,bx
  end;
end;

function IToS(i: Longint): string;  { make the str procedure to a function }
{ Convert any Integer type to a string }
var
  s: string[11];
begin
  Str(i, s);
  IToS := s;
end;

procedure error (s:string);
begin
  writeln (s); halt (1);
end;

procedure rmfiles;  { rewrite the response files }
begin
  assign (ta,'tarrespo.tmp'); rewrite (ta);
end;

procedure sort; { I know: bubble sort is sh*t, but it's the only one I know }
begin
  for i:=1 to k do
   for j:=1 to k-1 do
    if a[j]>a[j+1] then
    begin
      a[0]:=a[j]; a[j]:=a[j+1]; a[j+1]:=a[0];
    end;
end;

procedure out (nr:integer);  { put the colored data lines onto the screen }
var st:string;
begin
  s:=a[nr];
  if pos('* marked *',s)>0 then textcolor (lightred)
  else if s[length(s)]='/' then textcolor (lightmagenta)
  else if pos('.crd',s)>0 then textcolor (lightcyan)
  else if pos('.tab',s)>0 then textcolor (white)
  else if pos('.lyr',s)>0 then textcolor (green)
  else if pos('.btab',s)>0 then textcolor (cyan)
  else if pos('.num',s)>0 then textcolor (lightgray)
  else if pos('.pro',s)>0 then textcolor (lightgreen)
  else textcolor (yellow);
  st:=copy ('   ',1,3-trunc(ln(nr)/ln(10)))+itos(nr)+' - '+s;
  if length (st)>77 then st:=copy (st,1,74)+'...';
  write (st);
end;

procedure bar (x:integer);  { draw or hide the red bar }
begin
      asm
        mov ax,0002  { hide mouse to protect mouse cursor color inverting }
        int 33h
      end;
      for i:=1 to 78 do
memw[$B800:160*y+2*i+1]:=memw[$B800:160*y+2*i+1] and $ff0f or ($0010+x*$0030);
      asm
        mov ax,0001  { show mouse cursor again }
        int 33h
      end;
end;

procedure move (arg:integer);   { put a new page of data lines to screen }
const update : boolean = true;
var      count  : integer;
begin
  case arg of
    0: if j+42<k then j:=j+21 else j:=k-20;
    1: if j>21 then j:=j-21 else j:=1;
    2: begin j:=1; y:=1; end;
    3: begin j:=k-20; if k<20 then y:=k else y:=21; end;
  end;
  if j<1 then j:=1;
  clrscr;
  if k<20 then count:=k-1 else count:=20;
  for i:=0 to count do
  begin if i>0 then writeln; out (j+i); end;
  bar(1);
  c:=#0;
end;

procedure lineup; { move bar 1 line up }
begin
  if y>1 then
  begin
    bar (0);
    dec(y);
    bar (1)
  end else if k>21 then
  begin y:=21; move(1); end;
  c:=#0;
end;

procedure linedown; { move bar 1 line down }
begin
  if (y<21) and (y<k) then
  begin
    bar (0);
    inc(y);
    bar(1);
  end else
  begin y:=1; move (0); end;
  c:=#0;
end;

procedure mark;  { (de-)mark an entry }
begin
  if pos ('* marked *',a[j+y-1])<=0 then
  begin
    a[j+y-1]:=a[j+y-1]+' * marked *';
    linedown; move (4);
  end
  else
  begin
    a[j+y-1]:=copy (a[j+y-1],1,length(a[j+y-1])-11);
  move (4);
  end
end;

procedure mkfiles (st:string);  { write marked lines to response files }
var tt:string;
begin
  assign (ta,'tarrespo.tmp'); append (ta);
  for i:=1 to k do
  begin
    if pos ('* marked *',a[i])>0 then
    begin
      tt:=a[i];
      if pos('/',a[i])=1 then a[i]:=' * marked *';
      t:=st+a[i];
      if copy (t,length(t)-11,1)='/' then
      writeln (ta,copy (t,1,length(t)-12))
      else writeln (ta,copy (t,1,length(t)-11));
      cur:=anc;
      while cur<>NIL do
      begin
        if (t[1]>=cur^.first) and (t[1]<=cur^.last) then inc (cur^.count);
        cur:=cur^.next;
      end;
      a[i]:=tt;
      a[i]:=copy (a[i],1,length(a[i])-11);
    end;
  end; close (ta);
end;

procedure untar (n:integer);  { edit response files and call tar }
begin
  cur:=anc; i:=0;
  while cur<>NIL do
  begin
    i:=i+cur^.count;
    cur:=cur^.next;
  end;
  if i>0 then
  begin
    if n=1 then
    begin
      window (1,1,80,25); textcolor (lightgreen); clrscr;
      writeln (#10,' Press a key to start the response file editor... ');
      c:=readkey;
      exec (fexpand(fsearch('tvedit.exe',getenv('path'))), 'tarrespo.tmp');
    end;
    c:=#0;
    window (1,1,80,25); textcolor (yellow); clrscr;
    write   ('================================================================================');
    writeln ('    The marked files will now be unpacked. This mill take several minutes...   ');
    write   ('================================================================================');
    end else c:=#0;
  cur:=anc;
  while cur<>NIL do
  begin
    if cur^.count>0 then
    begin
    hp:=cur^.next;
    while hp<>NIL do
    begin
      if hp^.name=cur^.name then hp^.count:=0;
      hp:=hp^.next;
    end;
    writeln;
    writeln ('tar -xvof@ ',cur^.name,' tarrespo.tmp');
    swapvectors;
    exec (fexpand(fsearch('tar.exe',getenv('path'))), '-xvof@ '+cur^.name+' tarrespo.tmp');
    swapvectors;
    end;
    cur:=cur^.next;
  end;
  if i>0 then
  begin
    writeln; textcolor (lightgreen);
    writeln('Done. Should the response file be deleted (y/n)?');
    repeat
      c:=readkey; c:=upcase(c);
    until (c='Y') or (c='N');
    if c='Y' then rmfiles;
  end;
  c:=#27;
end;

procedure cd;  { navigate through the tar file }
begin
  if a[y+j-1]<>'..' then
  begin
    if copy (a[y+j-1],length(a[y+j-1]),1)<>'/' then mark
    else
    begin
      su:=su+a[y+j-1];
    end
  end
  else
  begin
    i:=length (su)-1;
    while (copy(su,i,1)<>'/') and (i>1) do dec (i);
    su:=copy (su,1,length(su)-(length(su)-i));
  end;
end;

procedure msg (st:string); { write a message and wait for confirmation }
begin
  window (3,24,79,24); textcolor (lightred); clrscr;
  write (st);
  c:=#0;
  repeat
    if keypressed then c:=readkey;
    if c='o' then begin chg_font; c:=#0; end;
  until (c<>'o') and (c<>#0);
  textcolor (yellow);
  writeln;
  write (hlp);
  c:=#0;
  window (2,2,79,22);
end;

procedure help;
begin
  textcolor (white); clrscr;
  writeln (' Keys :'); writeln ('========');
  writeln ('  Page up/down   : move through the list page by page up or down');
  writeln ('  Cursor up/down : move bar up or down. If the bar is being moved beyond');
  writeln ('                   the page limits, the previous or next page will be shown.');
  writeln ('  Home           : go to the first item of the list');
  writeln ('  End            : go to the last item of the list');
  writeln ('  SPACE          : mark the highlighted entry the for extracting');
  writeln ('  Return         : much like SPACE, but in alphabetic list mode it will allow');
  writeln ('                   you to change into the directories rather than mark them.');
  writeln ('  w              : write the names of the marked entries to the response file');
  writeln ('  c              : clear the contents of the response files');
  writeln ('  s              : sort the list');
  writeln ('  u              : unTAR (extract) the marked files from the TAR archives');
  writeln ('  e              : much like (u)nTAR, but allows to edit response file first');
  writeln ('  o              : toggle used font between normal and bold font');
  writeln ('  ESC            : end of search, return to main menu');
  writeln (' Mouse actions :');
  writeln ('=================');
  writeln (' Left button     : like pressing the Return key');
  write (' Right button    : like pressing the SPACE key');
  msg ('  Help screen. Press any key to return to the main program...');
  move (4);
end;

procedure full; { do a full-text search }
begin
  su:='';
  writeln; write ('Searching for:  '); readln (su);
  if su='' then exit;
  for i:=1 to length (su) do
  begin
    if (su[i]>='A') and (su[i]<='Z') then su[i]:=chr(ord(su[i])+32);
    if (su[i]=' ') then su[i]:='_';
  end;
  write ('Searching for "',su,'"...');
  window (2,2,79,22); clrscr;
  to_ma:=false;
  while not to_ma and not eof (f) do
  begin
    readln (f,s); inc(i); s:=' '+s;
    if pos(su,s)>0 then
    begin
      inc(k); a[k]:=copy (s,2,length(s)-1);
      if a[k]='' then
      write;
      if k>1 then writeln;
      out (k);
      if k=ent then to_ma:=true;
    end;
  end;
  j:=k-20; y:=1;
  if j<1 then j:=1;
  window (3,24,78,24); textcolor (yellow); clrscr;
  if to_ma=true then
  begin
    write ('Too many matches! Be more specific next time.                   <any Key>');
    c:=readkey;
  end;
  if k=0 then
  begin
    write ('    No matches for "',su,'"  !!                                 <any Key>');
    c:=readkey; c:=#0;
    exit;
  end;
  clrscr;
  write (hlp);
  window (2,2,79,22); c:=#0;
  bar(1);
  repeat
    if keypressed then
    begin c:=readkey; if c=#0 then c:=readkey; end;
    mpos;
    if (b>0) then
    begin
      z:=b;
      repeat mpos until b=0;
      if (v>7) and (v<22*8) then
      begin
        bar(0);
        y:=v div 8;
        bar (1);
        if z=1 then c:=#13 else c:=#32;
      end
      else if v<8 then move (1)
      else if v=22*8 then move(0)
      else if (v=23*8) and (h>68*8) then c:=#27;
    end;
    case c of
      #72: lineup;     { cursor up key }
      #80: linedown;   { cursor down key }
      #81: move (0);   { page up key }
      #73: move (1);   { page down key }
      #71: move (2);   { Home key }
      #79: move (3);   { end key }
      #32: mark;       { space }
      #13: mark;       { return }
      #59: help;       { F1 }
      'o': begin chg_font; c:=#0; end;
      's': begin sort; move (2); end;
      'u': begin mkfiles (''); untar(0); end;
      'e': begin mkfiles (''); untar(1); end;
      'w': begin
             mkfiles(''); write (7); move (4);
             msg ('    The marked file names have been written to the response file.   <Key>');
           end;
      'c': begin
             rmfiles;
             msg ('    Content of the response file deleted.                       <any Key>');
           end;
    end;
  until c=#27;
  c:=#0
end;

procedure groups; { navigate by directories }
var sa:string;
    sorted_out:boolean; { if the index file is sorted and we read an element
                          which is 'greater' than the last allowed entry the
                          output can be aborted. }
begin
  su:=' ';
  repeat
    sorted_out:=true;
    if su[length(su)]='/' then no_upd:=false;
    if not no_upd then
    begin
      reset (f);
      sa:='*'; k:=1; to_ma:=false;
      window (2,2,79,22); clrscr;
      to_ma:=false;
      if su<>' ' then begin; a[k]:='..'; out (k); inc (k); end;
      while not to_ma and not eof (f) and sorted_out do
      begin
        readln (f,s); s:=' '+s;
        t:=copy (s,length(su)+1,length(s)-length(su)+1);
        z:=pos(sa,t); if (z=1) and (t='') then z:=0;
        if pos('/',s)=0 then z:=0;
        if (su<copy(s,1,length(su))) and sorted then sorted_out:=false;
        if (pos (su,s)=1) and (z<>1) then
        begin
          if pos ('/',t)>0 then sa:=copy (t,1,pos ('/',t)) else sa:=t;
          if sa<>'' then a[k]:=sa else a[k]:='/'+copy (s,2,length(s)-1)+' ';
          if k>1 then writeln; out (k);
          inc (k); if k>ent then to_ma:=true;
        end;
      end;
      dec (k);
      j:=k-20; y:=1;
      if j<1 then j:=1;
      move (3);
      no_upd:=false;
    end;
    no_upd:=false;
    window (3,24,78,24); textcolor (yellow); clrscr;
    if to_ma=true then
    begin
      write ('Too many matches! Be more specific next time.                   <any Key>');
      c:=readkey;
    end;
    clrscr;
    write (hlp);
    window (2,2,79,22); c:=#0;
    bar(1);
    repeat
      if keypressed then
      begin c:=readkey; if c=#0 then c:=readkey; end;
      mpos;
      if (b>0) then
      begin
        z:=b;
        repeat mpos until b=0;
        if (v>7) and (v<22*8) then
        begin
          bar(0);
          y:=v div 8;
          bar (1);
          if z=1 then c:=#13 else c:=#32;
        end
        else if v<8 then move (1)
        else if v=22*8 then move(0)
        else if (v=23*8) and (h>72*8) then c:=#27;
      end;
      case c of
        #72: lineup;     { cursor up key }
        #80: linedown;   { cursor down key }
        #81: move (0);   { page up key }
        #73: move (1);   { page down key }
        #71: move (2);   { Home key }
        #79: move (3);   { end key }
        #32: mark;       { space }
        #13: cd;         { return }
        #59: help;       { F1 }
        'o': begin chg_font; c:=#0; end;
        's': begin sort; move (2); end;
        'u': begin mkfiles (copy (su,2,length(su)-1)); untar(0); end;
        'e': begin mkfiles (copy (su,2,length(su)-1)); untar(1); end;
        'w': begin
               mkfiles(copy (su,2,length(su)-1)); write (7); move (4);
               msg ('    The marked file names have been written to the response file.   <Key>');
               no_upd:=true;
             end;
        'c': begin
               rmfiles;
               msg ('    Contents of the response file deleted.                           <Key>');
               no_upd:=true;
             end;
      end;
    until (c=#27) or (c=#13);
  until c=#27;
  c:=#0;
end;

function LZ(w : Word) : String;
var
  s : String;
begin
  Str(w:0,s);
  if Length(s) = 1 then
    s := '0' + s;
  LZ := s;
end;

procedure stat;
var st,so : string;
    dt    : datetime;
    dl    : longint;
begin
  window (2,4,79,21); textcolor (white); clrscr;
  writeln ('    Calculating data...'); writeln; writeln;
  window (4,6,79,21);
  assign (ts,'all.idx');
  reset (ts);
  i:=0; j:=0; st:='*'; so:='*';
  while not eof (ts) do
  begin
    readln (ts,s); s:=' '+s;
    if s[length(s)]<>'/' then
    begin
      inc (i);
      k:=length (s);
      repeat
        dec(k);
      until s[k]='/';
      repeat
        dec(k);
      until (s[k]='/') or (k=0);
      st:=copy (s,k+1,pos ('/',copy (s,k+1,length(s)-k))-1);
      if (st<>so) and (k>0) then
      begin
        inc (j);
        so:=st;
      end;
    end;
  end;
  close (ts); assign (fi,anc^.name); reset (fi); read (fi,by);
  getftime (fi,dl); unpacktime (dl,dt); close (fi); writeln;
  write ('Total number of bands :  '); textcolor (lightgreen); writeln (j);
  textcolor (white);
  write ('Total number of songs :  '); textcolor (lightgreen); writeln (i);
  textcolor (white); writeln;
  dl:=0;
  cur:=anc; so:='*';
  while cur<>NIL do
  begin
    assign (fi,cur^.name); reset (fi);
    if cur^.name<>so then
    begin
      dl:=dl+filesize(fi); so:=cur^.name;
    end;
    close (fi);
    cur:=cur^.next;
  end;
  write ('Total amount of space used by the TAR archive files :  ');
  textcolor (lightgreen); write (dl/1024/1024:5:2);
  textcolor (white); writeln (' MBytes.'); writeln;
  write ('Date & time of archive '); textcolor (green);
  write (anc^.name); textcolor (white); write (' :  ');
  textcolor (lightgreen); write (lz(dt.day),' ');
  writeln (months[dt.month],' '+lz(dt.year)+', '+lz(dt.hour)+':'+lz(dt.min));
  textcolor (white); writeln;
  if by=$1f then writeln ('TAR archives are gzip packed.')
  else writeln ('TAR archives seem not to be packed.');
  msg ('Press any key to return to the menu.');
end;

begin { main }
  doserror:=0;
  findfirst('olga.cfg',anyfile and not directory,sr);
  if doserror<>0 then error ('Configuration file not found!  Use install program to re-install...');
  assign (ta,'olga.cfg'); reset (ta);
  new (anc); cur:=anc;      { build tar spec list }
  while not eof (ta) do
  begin
    repeat readln (ta,s); until s[1]<>';'; { read, ignore comment lines }
    if pos('*sorted*',s)=1 then sorted:=true
    else
    begin
      i:=pos (' ',s);
      cur^.name:=copy (s,1,i-1);
      cur^.first:=s[i+1];
      cur^.last:=s[i+3];
      cur^.count:=0;
      if eof (ta) then cur^.next:=NIL else
      begin
        new (cur^.next); cur:=cur^.next;
      end;
      sorted:=false;
    end;
  end;
  close (ta);
  mouse:=false;
  doserror:=0;
  findfirst('all.idx',anyfile and not directory,sr);
  if doserror<>0 then error ('IDX file not found! Use setup program to re-install or try to call OLGABR.BAT.' );
  assign (f,'all.idx');
  reset (f);
  rmfiles;
  no_upd:=false;  b_on:=true; bold_on;
  repeat
    window (1,1,80,25); clrscr;
    i:=0; j:=0; k:=0;
    textcolor (yellow); textbackground (blue); clrscr;
    for i:=0 to 77 do mem [$B800:2+2*i]:=ord('�');
    memL [$B800:4+2*i]:=$1eBA1eBB;
    mem [$B800:0]:=ord('�');
    memL [$B8ef:14]:=$1eC81eBA;
    for i:=0 to 77 do mem [$B8f0:2+2*i]:=ord('�');
    mem [$B8f0:4+2*i]:=ord ('�');
    for i:=1 to 22 do memL[$B800:158+160*i]:=$1eBA1eBA;
    gotoxy (2,23); for i:=1 to 78 do write ('�');
    gotoxy (23,1); write ('� OLGA - On-Line Guitar Archive �');
    window (2,8,79,25); textcolor (lightblue);
    WriteLn('              .oooooo.   ooooo          .oooooo.          .o.');
    WriteLn('             d8P''  `Y8b  `888''         d8P''  `Y8b        .888.');
    WriteLn('            888      888  888         888               .8"888.');
    WriteLn('            888      888  888         888              .8'' `888.');
    WriteLn('            888      888  888         888     ooooo   .88ooo8888.');
    WriteLn('            `88b    d88''  888       o `88.    .88''   .8''     `888.');
    WriteLn('             `Y8bood8P''  o888ooooood8  `Y8bood8P''   o88o     o8888o');
    WriteLn; WriteLn;
    WriteLn('      ==================================================================');
    WriteLn('    ===================  The Online - Guitar archive  ====================');
    WriteLn('  ==========================================================================');
    window (3,24,79,24); textcolor (yellow);
    write ('Initializing...');
    if mouse=false then
    asm
      mov ax,0000
      int 33h     { Init. mouse driver -> ax=-1 : no driver / no mouse }
      mov h,ax
      cmp ax,-1
      jne @x
      mov ax,0004 { set mouse position to upper left corner }
      mov cx,0
      mov dx,0
      int 33h
      mov ax,0001 { show mouse cursor }
      int 33h
  @x: nop
    end;
    if h=65535 then mouse:=true;
    textcolor (white);
    WriteLn;
    textcolor (yellow); Write ('(');
    textcolor (lightred); write ('A');
    textcolor (yellow); write (')lphabetic order, (');
    textcolor (lightred); write ('F');
    textcolor (yellow); write (')ull text search, (');
    textcolor (lightred); write ('S');
    textcolor (yellow); write (')tatistics, F(');
    textcolor (lightred); write ('o');
    textcolor (yellow); write (')nt, (');
    textcolor (lightred); write ('ESC');
    textcolor (yellow); write (') for quit');
    repeat
      c:=readkey; if c<>'o' then c:=upcase(c);
    until c in ['A','F','S','o',#27];
    reset (f);
    case c of
      'A': groups;
      'F': full;
      'S': stat;
      'o': begin if b_on then bold_off else bold_on; B_on:=not b_on; end;
    end;
  until c=#27;
  close (f);  window (1,1,80,25);
  window (1,1,80,25); { restore normal screen conditions }
  textcolor (lightgray); textbackground (black);
  clrscr; bold_off;
  assign (ta,'tarrespo.tmp'); erase (ta);
end.