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Aquaria/ExternalLibs/ttvfs/VFSLoader.cpp

121 lines
2.8 KiB
C++

// VFSLoader.cpp - late loading of files not in the tree
// For conditions of distribution and use, see copyright notice in VFS.h
#include "VFSInternal.h"
#include "VFSTools.h"
#include "VFSFile.h"
#include "VFSDir.h"
#include "VFSLoader.h"
VFS_NAMESPACE_START
#if !defined(_WIN32) && defined(VFS_IGNORE_CASE)
#include <dirent.h>
// based on code in PhysicsFS: http://icculus.org/physfs/
static bool locateOneElement(char *buf)
{
char *ptr;
DIR *dirp;
ptr = strrchr(buf, '/'); // find entry at end of path.
//printf("locateOneElem: buf='%s' ptr='%s'\n", ptr, buf);
if (ptr == NULL)
{
dirp = opendir(".");
ptr = buf;
}
else
{
if(ptr != buf) // strip only if not abs path
*ptr = '\0';
//printf("opendir: '%s'\n", buf);
dirp = opendir(buf);
*ptr = '/';
ptr++; // point past dirsep to entry itself.
}
//printf("dirp = %p\n", dirp);
struct dirent *dent;
while ((dent = readdir(dirp)) != NULL)
{
if (strcasecmp(dent->d_name, ptr) == 0)
{
strcpy(ptr, dent->d_name); // found a match. Overwrite with this case.
closedir(dirp);
return true;
}
}
// no match at all...
closedir(dirp);
return false;
}
static bool findFileHarder(char *fn)
{
char *ptr = fn;
bool found = true;
while ((ptr = strchr(ptr + 1, '/')) != 0)
{
*ptr = '\0';
found = locateOneElement(fn);
*ptr = '/'; // restore path separator
if (!found)
return false;
}
// check final element...
found = found && locateOneElement(fn);
//printf("tt: Fixed case '%s' [%s]\n", fn, found ? "found" : "NOT FOUND"); // TEMP
return found;
}
#endif
VFSFile *VFSLoaderDisk::Load(const char *fn, const char * /*ignored*/)
{
if(FileExists(fn))
return new VFSFileReal(fn); // must contain full file name
VFSFileReal *vf = NULL;
#if !defined(_WIN32) && defined(VFS_IGNORE_CASE)
size_t s = strlen(fn);
char *t = (char*)VFS_STACK_ALLOC(s+1);
memcpy(t, fn, s+1); // copy terminating '\0' as well
if(findFileHarder(&t[0])) // fixes the filename on the way
vf = new VFSFileReal(&t[0]);
VFS_STACK_FREE(t);
#endif
return vf;
}
VFSDir *VFSLoaderDisk::LoadDir(const char *fn, const char * /*ignored*/)
{
if(IsDirectory(fn))
return new VFSDirReal(fn); // must contain full file name
VFSDirReal *ret = NULL;
#if !defined(_WIN32) && defined(VFS_IGNORE_CASE)
size_t s = strlen(fn);
char *t = (char*)VFS_STACK_ALLOC(s+1);
memcpy(t, fn, s+1); // copy terminating '\0' as well
if(findFileHarder(&t[0])) // fixes the filename on the way
{
ret = new VFSDirReal(&t[0]);
}
VFS_STACK_FREE(t);
#endif
return ret;
}
VFS_NAMESPACE_END