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+// Emacs style mode select -*- C++ -*-
+//-----------------------------------------------------------------------------
+//
+// Copyright(C) 1993-1996 Id Software, Inc.
+// Copyright(C) 2005-2010 Simon Howard
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License
+// as published by the Free Software Foundation; either version 2
+// of the License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+// 02111-1307, USA.
+//
+// DESCRIPTION:
+// Common code to parse command line, identifying WAD files to load.
+//
+//-----------------------------------------------------------------------------
+
+#include "doomfeatures.h"
+#include "d_iwad.h"
+#include "m_argv.h"
+#include "w_main.h"
+#include "w_merge.h"
+#include "w_wad.h"
+#include "z_zone.h"
+
+// Parse the command line, merging WAD files that are sppecified.
+// Returns true if at least one file was added.
+
+boolean W_ParseCommandLine(void)
+{
+ boolean modifiedgame = false;
+ int p;
+
+#ifdef FEATURE_WAD_MERGE
+
+ // Merged PWADs are loaded first, because they are supposed to be
+ // modified IWADs.
+
+ //!
+ // @arg <files>
+ // @category mod
+ //
+ // Simulates the behavior of deutex's -merge option, merging a PWAD
+ // into the main IWAD. Multiple files may be specified.
+ //
+
+ p = M_CheckParm("-merge");
+
+ if (p > 0)
+ {
+ for (p = p + 1; p<myargc && myargv[p][0] != '-'; ++p)
+ {
+ char *filename;
+
+ modifiedgame = true;
+
+ filename = D_TryFindWADByName(myargv[p]);
+
+ printf(" merging %s\n", filename);
+ W_MergeFile(filename);
+ }
+ }
+
+ // NWT-style merging:
+
+ // NWT's -merge option:
+
+ //!
+ // @arg <files>
+ // @category mod
+ //
+ // Simulates the behavior of NWT's -merge option. Multiple files
+ // may be specified.
+
+ p = M_CheckParm("-nwtmerge");
+
+ if (p > 0)
+ {
+ for (p = p + 1; p<myargc && myargv[p][0] != '-'; ++p)
+ {
+ char *filename;
+
+ modifiedgame = true;
+
+ filename = D_TryFindWADByName(myargv[p]);
+
+ printf(" performing NWT-style merge of %s\n", filename);
+ W_NWTDashMerge(filename);
+ }
+ }
+
+ // Add flats
+
+ //!
+ // @arg <files>
+ // @category mod
+ //
+ // Simulates the behavior of NWT's -af option, merging flats into
+ // the main IWAD directory. Multiple files may be specified.
+ //
+
+ p = M_CheckParm("-af");
+
+ if (p > 0)
+ {
+ for (p = p + 1; p<myargc && myargv[p][0] != '-'; ++p)
+ {
+ char *filename;
+
+ modifiedgame = true;
+
+ filename = D_TryFindWADByName(myargv[p]);
+
+ printf(" merging flats from %s\n", filename);
+ W_NWTMergeFile(filename, W_NWT_MERGE_FLATS);
+ }
+ }
+
+ //!
+ // @arg <files>
+ // @category mod
+ //
+ // Simulates the behavior of NWT's -as option, merging sprites
+ // into the main IWAD directory. Multiple files may be specified.
+ //
+
+ p = M_CheckParm("-as");
+
+ if (p > 0)
+ {
+ for (p = p + 1; p<myargc && myargv[p][0] != '-'; ++p)
+ {
+ char *filename;
+
+ modifiedgame = true;
+ filename = D_TryFindWADByName(myargv[p]);
+
+ printf(" merging sprites from %s\n", filename);
+ W_NWTMergeFile(filename, W_NWT_MERGE_SPRITES);
+ }
+ }
+
+ //!
+ // @arg <files>
+ // @category mod
+ //
+ // Equivalent to "-af <files> -as <files>".
+ //
+
+ p = M_CheckParm("-aa");
+
+ if (p > 0)
+ {
+ for (p = p + 1; p<myargc && myargv[p][0] != '-'; ++p)
+ {
+ char *filename;
+
+ modifiedgame = true;
+
+ filename = D_TryFindWADByName(myargv[p]);
+
+ printf(" merging sprites and flats from %s\n", filename);
+ W_NWTMergeFile(filename, W_NWT_MERGE_SPRITES | W_NWT_MERGE_FLATS);
+ }
+ }
+
+#endif
+
+ //!
+ // @arg <files>
+ // @vanilla
+ //
+ // Load the specified PWAD files.
+ //
+
+ p = M_CheckParm ("-file");
+ if (p)
+ {
+ // the parms after p are wadfile/lump names,
+ // until end of parms or another - preceded parm
+ modifiedgame = true; // homebrew levels
+ while (++p != myargc && myargv[p][0] != '-')
+ {
+ char *filename;
+
+ filename = D_TryFindWADByName(myargv[p]);
+
+ printf(" adding %s\n", filename);
+ W_AddFile(filename);
+ }
+ }
+
+// W_PrintDirectory();
+
+ return modifiedgame;
+}
+