mirror of
https://github.com/ZDoom/gzdoom.git
synced 2024-11-14 08:31:23 +00:00
134 lines
3.8 KiB
C++
134 lines
3.8 KiB
C++
/*
|
|
** pathexpander.cpp
|
|
** Utility class for expanding a given path with a range of directories
|
|
**
|
|
**---------------------------------------------------------------------------
|
|
** Copyright 2015 Christoph Oelckers
|
|
** All rights reserved.
|
|
**
|
|
** Redistribution and use in source and binary forms, with or without
|
|
** modification, are permitted provided that the following conditions
|
|
** are met:
|
|
**
|
|
** 1. Redistributions of source code must retain the above copyright
|
|
** notice, this list of conditions and the following disclaimer.
|
|
** 2. Redistributions in binary form must reproduce the above copyright
|
|
** notice, this list of conditions and the following disclaimer in the
|
|
** documentation and/or other materials provided with the distribution.
|
|
** 3. The name of the author may not be used to endorse or promote products
|
|
** derived from this software without specific prior written permission.
|
|
**
|
|
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
**---------------------------------------------------------------------------
|
|
**
|
|
*/
|
|
|
|
#include "pathexpander.h"
|
|
#include "cmdlib.h"
|
|
#include "w_wad.h"
|
|
|
|
//============================================================================
|
|
//
|
|
//
|
|
//
|
|
//============================================================================
|
|
|
|
static FString BuildPath(const FString &base, const char *name)
|
|
{
|
|
FString current;
|
|
if (base.IsNotEmpty())
|
|
{
|
|
current = base;
|
|
if (current[current.Len() - 1] != '/') current += '/';
|
|
}
|
|
current += name;
|
|
return current;
|
|
}
|
|
|
|
//============================================================================
|
|
//
|
|
// This is meant to find and open files for reading.
|
|
//
|
|
//============================================================================
|
|
|
|
FileReader *PathExpander::openFileReader(const char *name, int *plumpnum)
|
|
{
|
|
FileReader *fp;
|
|
FString current_filename;
|
|
|
|
if (!name || !(*name))
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
/* First try the given name */
|
|
current_filename = name;
|
|
FixPathSeperator(current_filename);
|
|
|
|
|
|
if (openmode != OM_FILE)
|
|
{
|
|
int lumpnum = Wads.CheckNumForFullName(current_filename);
|
|
if (lumpnum >= 0)
|
|
{
|
|
fp = Wads.ReopenLumpNum(lumpnum);
|
|
if (plumpnum) *plumpnum = lumpnum;
|
|
return fp;
|
|
}
|
|
if (openmode == OM_LUMP) // search the path list when not loading the main config
|
|
{
|
|
for (unsigned int plp = PathList.Size(); plp-- != 0; )
|
|
{ /* Try along the path then */
|
|
current_filename = BuildPath(PathList[plp], name);
|
|
lumpnum = Wads.CheckNumForFullName(current_filename);
|
|
if (lumpnum >= 0)
|
|
{
|
|
fp = Wads.ReopenLumpNum(lumpnum);
|
|
if (plumpnum) *plumpnum = lumpnum;
|
|
return fp;
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
}
|
|
if (plumpnum) *plumpnum = -1;
|
|
|
|
|
|
fp = new FileReader;
|
|
if (fp->Open(current_filename)) return fp;
|
|
|
|
if (name[0] != '/')
|
|
{
|
|
for (unsigned int plp = PathList.Size(); plp-- != 0; )
|
|
{ /* Try along the path then */
|
|
current_filename = BuildPath(PathList[plp], name);
|
|
if (fp->Open(current_filename)) return fp;
|
|
}
|
|
}
|
|
delete fp;
|
|
|
|
/* Nothing could be opened. */
|
|
return NULL;
|
|
}
|
|
|
|
/* This adds a directory to the path list */
|
|
void PathExpander::addToPathlist(const char *s)
|
|
{
|
|
FString copy = s;
|
|
FixPathSeperator(copy);
|
|
PathList.Push(copy);
|
|
}
|
|
|
|
void PathExpander::clearPathlist()
|
|
{
|
|
PathList.Clear();
|
|
}
|