src/thirdparty/VirtualDub/h/vd2/system/cmdline.h

   1 //      VirtualDub - Video processing and capture application
   2 //      System library component
   3 //      Copyright (C) 1998-2005 Avery Lee, All Rights Reserved.
   4 //
   5 //      Beginning with 1.6.0, the VirtualDub system library is licensed
   6 //      differently than the remainder of VirtualDub.  This particular file is
   7 //      thus licensed as follows (the "zlib" license):
   8 //
   9 //      This software is provided 'as-is', without any express or implied
  10 //      warranty.  In no event will the authors be held liable for any
  11 //      damages arising from the use of this software.
  12 //
  13 //      Permission is granted to anyone to use this software for any purpose,
  14 //      including commercial applications, and to alter it and redistribute it
  15 //      freely, subject to the following restrictions:
  16 //
  17 //      1.      The origin of this software must not be misrepresented; you must
  18 //              not claim that you wrote the original software. If you use this
  19 //              software in a product, an acknowledgment in the product
  20 //              documentation would be appreciated but is not required.
  21 //      2.      Altered source versions must be plainly marked as such, and must
  22 //              not be misrepresented as being the original software.
  23 //      3.      This notice may not be removed or altered from any source
  24 //              distribution.
  25
  26 #ifndef f_VD2_SYSTEM_CMDLINE_H
  27 #define f_VD2_SYSTEM_CMDLINE_H
  28
  29 #include <vd2/system/vdstl.h>
  30
  31 class VDStringSpanW;
  32
  33 class VDCommandLineIterator {
  34         friend class VDCommandLine;
  35 public:
  36         VDCommandLineIterator() : mIndex(1) {}
  37
  38 private:
  39         int mIndex;
  40 };
  41
  42 class VDCommandLine {
  43 public:
  44         VDCommandLine();
  45         VDCommandLine(const wchar_t *s);
  46         ~VDCommandLine();
  47
  48         void Init(const wchar_t *s);
  49
  50         // This splits the cmdline using rules that are closer to Visual C++'s:
  51         // - 2N+1 backslashes followed by a quote inserts a literal quote.
  52         // - 2N backslashes followed by a quote toggles the quote state.
  53         // - Outside of a quote, spaces, tabs, and forward slashes delimit parameters.
  54         //
  55         // We still have special switch processing:
  56         // - A parameter starting with a forward slash followed by a ? or an alphanumeric
  57         //   char is a switch. A switch is terminated by a non-alphanumeric character or
  58         //   a colon.
  59         void InitAlt(const wchar_t *s);
  60
  61         uint32 GetCount() const;
  62         const wchar_t *operator[](int index) const;
  63         const VDStringSpanW operator()(int index) const;
  64
  65         bool GetNextArgument(VDCommandLineIterator& index, const wchar_t *& token, bool& isSwitch) const;
  66         bool GetNextNonSwitchArgument(VDCommandLineIterator& index, const wchar_t *& token) const;
  67         bool GetNextSwitchArgument(VDCommandLineIterator& index, const wchar_t *& token) const;
  68         bool FindAndRemoveSwitch(const wchar_t *name);
  69         bool FindAndRemoveSwitch(const wchar_t *name, const wchar_t *& token);
  70
  71 protected:
  72         void RemoveArgument(int index);
  73
  74         vdfastvector<wchar_t>   mLine;
  75
  76         struct Token {
  77                 int mTokenIndex;
  78                 bool mbIsSwitch;
  79         };
  80
  81         vdfastvector<Token>     mTokens;
  82 };
  83
  84 #endif