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148 lines
3.3 KiB
C++
148 lines
3.3 KiB
C++
/*
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TiMidity -- Experimental MIDI to WAVE converter
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Copyright (C) 1995 Tuukka Toivonen <toivonen@clinet.fi>
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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common.c
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include "timidity.h"
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#include "tarray.h"
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#include "i_system.h"
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#include "w_wad.h"
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#include "files.h"
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#include "cmdlib.h"
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namespace Timidity
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{
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static TArray<FString> PathList;
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FString BuildPath(FString base, const char *name)
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{
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FString current;
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if (base.IsNotEmpty())
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{
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current = base;
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if (current[current.Len() - 1] != '/') current += '/';
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}
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current += name;
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return current;
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}
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/* This is meant to find and open files for reading. */
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FileReader *open_filereader(const char *name, int open, int *plumpnum)
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{
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FileReader *fp;
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FString current_filename;
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if (!name || !(*name))
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{
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return 0;
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}
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/* First try the given name */
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current_filename = name;
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FixPathSeperator(current_filename);
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int lumpnum = Wads.CheckNumForFullName(current_filename);
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if (open != OM_FILE)
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{
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if (lumpnum >= 0)
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{
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fp = Wads.ReopenLumpNum(lumpnum);
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if (plumpnum) *plumpnum = lumpnum;
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return fp;
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}
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if (open == OM_LUMP) // search the path list when not loading the main config
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{
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for (unsigned int plp = PathList.Size(); plp-- != 0; )
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{ /* Try along the path then */
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current_filename = BuildPath(PathList[plp], name);
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lumpnum = Wads.CheckNumForFullName(current_filename);
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if (lumpnum >= 0)
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{
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fp = Wads.ReopenLumpNum(lumpnum);
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if (plumpnum) *plumpnum = lumpnum;
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return fp;
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}
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}
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return NULL;
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}
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}
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if (plumpnum) *plumpnum = -1;
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fp = new FileReader;
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if (fp->Open(current_filename)) return fp;
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if (name[0] != '/')
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{
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for (unsigned int plp = PathList.Size(); plp-- != 0; )
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{ /* Try along the path then */
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current_filename = BuildPath(PathList[plp], name);
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if (fp->Open(current_filename)) return fp;
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}
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}
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delete fp;
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/* Nothing could be opened. */
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current_filename = "";
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return NULL;
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}
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/* This'll allocate memory or die. */
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void *safe_malloc(size_t count)
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{
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void *p;
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if (count > (1 << 21))
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{
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I_Error("Timidity: Tried allocating %zu bytes. This must be a bug.", count);
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}
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else if ((p = malloc(count)))
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{
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return p;
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}
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else
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{
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I_Error("Timidity: Couldn't malloc %zu bytes.", count);
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}
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return 0; // Unreachable.
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}
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/* This adds a directory to the path list */
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void add_to_pathlist(const char *s)
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{
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FString copy = s;
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FixPathSeperator(copy);
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PathList.Push(copy);
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}
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void clear_pathlist()
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{
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PathList.Clear();
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}
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}
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