unit uFLData;

interface

function getThemesList: PPChar; cdecl;

procedure freeThemesList(list: PPChar); cdecl;

function getThemeIcon(themeName: PChar; buffer: PChar; buflen: Longword): Longword; cdecl;

implementation

uses uPhysFSLayer;

function getThemesList: PPChar; cdecl;

var list, res, tmp: PPChar;

    i, size: Longword;

begin

    list:= pfsEnumerateFiles('Themes');

    size:= 0;

    tmp:= list;

    while tmp^ <> nil do

    begin

        inc(size);

        inc(tmp)

    end;

    res:= GetMem((3 + size) * sizeof(PChar));

    res^:= PChar(list);

    inc(res);

    res^:= PChar(res + size + 2);

    inc(res);

    getThemesList:= res;

    for i:= 1 to size do

    begin

        if pfsExists('/Themes/' + shortstring(list^) + '/icon.png') then

        begin

            res^:= list^;

            inc(res)

        end;

        inc(list)

    end;

    res^:= nil

end;

procedure freeThemesList(list: PPChar); cdecl;

var listEnd: PPChar;

begin

    dec(list);

    listEnd:= PPChar(list^);

    dec(list);

    pfsFreeList(PPChar(list^));

    freeMem(list, (listEnd - list) * sizeof(PChar))

end;

function getThemeIcon(themeName: PChar; buffer: PChar; buflen: Longword): Longword; cdecl;

var s: shortstring;

    f: PFSFile;

begin

    s:= '/Themes/' + shortstring(themeName) + '/icon@2x.png';

    f:= pfsOpenRead(s);

    if f = nil then

        getThemeIcon:= 0

    else

    begin

        getThemeIcon:= pfsBlockRead(f, buffer, buflen);

        pfsClose(f)

    end;

end;

end.