misc/libphysfs/platform_macosx.c
author nemo
Mon, 10 Nov 2014 10:22:03 -0500
changeset 10483 1f58cb4aa773
parent 10017 de822cd3df3a
child 12213 bb5522e88ab2
permissions -rw-r--r--
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/*
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 * Mac OS X support routines for PhysicsFS.
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 *
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 * Please see the file LICENSE.txt in the source's root directory.
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 *
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 *  This file written by Ryan C. Gordon.
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 */
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#define __PHYSICSFS_INTERNAL__
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#include "physfs_platforms.h"
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#ifdef PHYSFS_PLATFORM_MACOSX
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#include <CoreFoundation/CoreFoundation.h>
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#if !defined(PHYSFS_NO_CDROM_SUPPORT)
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#include <Carbon/Carbon.h>  /* !!! FIXME */
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#include <IOKit/storage/IOMedia.h>
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#include <IOKit/storage/IOCDMedia.h>
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#include <IOKit/storage/IODVDMedia.h>
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#include <sys/mount.h>
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#endif
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/* Seems to get defined in some system header... */
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#ifdef Free
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#undef Free
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#endif
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#include "physfs_internal.h"
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#if defined(__APPLE__)
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#if defined(TARGET_OS_MAC) && MAC_OS_X_VERSION_MAX_ALLOWED <= MAC_OS_X_VERSION_10_4
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/* __eprintf shouldn't have been made visible from libstdc++, or anywhere, but
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   on Mac OS X 10.4 it was defined in libstdc++.6.0.3.dylib; so on that platform
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   we have to keep defining it to keep binary compatibility.
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   We can't just put the libgcc version in the export list, because that
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   doesn't work; once a symbol is marked as hidden, it stays that way.  */
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void __eprintf (const char *string, const char *expression,
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            unsigned int line, const char *filename)
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{
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    fprintf(stderr, string, expression, line, filename);
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    fflush(stderr);
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    abort();
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}
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/* apparently libssp is missing from 10.4 SDK
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   code from http://wiki.osdev.org/GCC_Stack_Smashing_Protector */
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void * __stack_chk_guard = NULL;
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void __stack_chk_guard_setup()
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{
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    unsigned char * p;
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    p = (unsigned char *) &__stack_chk_guard;
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    /* If you have the ability to generate random numbers in your kernel then use them,
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       otherwise for 32-bit code: *p = 0x00000aff; */
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    *p = random();
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}
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void __attribute__((noreturn)) __stack_chk_fail()
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{
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    /* put your panic function or similar in here */
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    unsigned char * vid = (unsigned char *)0xB8000;
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    vid[1] = 7;
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    for(;;)
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    vid[0]++;
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}
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#endif
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#endif /* __APPLE__ */
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/* Wrap PHYSFS_Allocator in a CFAllocator... */
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static CFAllocatorRef cfallocator = NULL;
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static CFStringRef cfallocDesc(const void *info)
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{
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    return CFStringCreateWithCString(cfallocator, "PhysicsFS",
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                                     kCFStringEncodingASCII);
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} /* cfallocDesc */
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static void *cfallocMalloc(CFIndex allocSize, CFOptionFlags hint, void *info)
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{
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    return allocator.Malloc(allocSize);
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} /* cfallocMalloc */
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static void cfallocFree(void *ptr, void *info)
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{
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    allocator.Free(ptr);
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} /* cfallocFree */
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static void *cfallocRealloc(void *ptr, CFIndex newsize,
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                            CFOptionFlags hint, void *info)
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{
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    if ((ptr == NULL) || (newsize <= 0))
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        return NULL;  /* ADC docs say you should always return NULL here. */
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    return allocator.Realloc(ptr, newsize);
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} /* cfallocRealloc */
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int __PHYSFS_platformInit(void)
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{
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    /* set up a CFAllocator, so Carbon can use the physfs allocator, too. */
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    CFAllocatorContext ctx;
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    memset(&ctx, '\0', sizeof (ctx));
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    ctx.copyDescription = cfallocDesc;
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    ctx.allocate = cfallocMalloc;
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    ctx.reallocate = cfallocRealloc;
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    ctx.deallocate = cfallocFree;
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    cfallocator = CFAllocatorCreate(kCFAllocatorUseContext, &ctx);
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    BAIL_IF_MACRO(!cfallocator, PHYSFS_ERR_OUT_OF_MEMORY, 0);
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    return 1;  /* success. */
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} /* __PHYSFS_platformInit */
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int __PHYSFS_platformDeinit(void)
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{
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    CFRelease(cfallocator);
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    cfallocator = NULL;
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    return 1;  /* always succeed. */
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} /* __PHYSFS_platformDeinit */
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/* CD-ROM detection code... */
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/*
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 * Code based on sample from Apple Developer Connection:
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 *  http://developer.apple.com/samplecode/Sample_Code/Devices_and_Hardware/Disks/VolumeToBSDNode/VolumeToBSDNode.c.htm
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 */
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#if !defined(PHYSFS_NO_CDROM_SUPPORT)
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static int darwinIsWholeMedia(io_service_t service)
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{
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    int retval = 0;
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    CFTypeRef wholeMedia;
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    if (!IOObjectConformsTo(service, kIOMediaClass))
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        return 0;
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    wholeMedia = IORegistryEntryCreateCFProperty(service,
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                                                 CFSTR(kIOMediaWholeKey),
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                                                 cfallocator, 0);
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    if (wholeMedia == NULL)
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        return 0;
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    retval = CFBooleanGetValue(wholeMedia);
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    CFRelease(wholeMedia);
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    return retval;
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} /* darwinIsWholeMedia */
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static int darwinIsMountedDisc(char *bsdName, mach_port_t masterPort)
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{
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    int retval = 0;
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    CFMutableDictionaryRef matchingDict;
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    kern_return_t rc;
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    io_iterator_t iter;
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    io_service_t service;
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    if ((matchingDict = IOBSDNameMatching(masterPort, 0, bsdName)) == NULL)
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        return 0;
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    rc = IOServiceGetMatchingServices(masterPort, matchingDict, &iter);
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    if ((rc != KERN_SUCCESS) || (!iter))
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        return 0;
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    service = IOIteratorNext(iter);
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    IOObjectRelease(iter);
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    if (!service)
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        return 0;
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   180
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   181
    rc = IORegistryEntryCreateIterator(service, kIOServicePlane,
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             kIORegistryIterateRecursively | kIORegistryIterateParents, &iter);
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    if (!iter)
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   185
        return 0;
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   186
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   187
    if (rc != KERN_SUCCESS)
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parents:
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   188
    {
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diff changeset
   189
        IOObjectRelease(iter);
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   190
        return 0;
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diff changeset
   191
    } /* if */
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   192
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   193
    IOObjectRetain(service);  /* add an extra object reference... */
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   194
13e2037ebc79 Try using PhysicsFS.
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   195
    do
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parents:
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   196
    {
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diff changeset
   197
        if (darwinIsWholeMedia(service))
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parents:
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   198
        {
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   199
            if ( (IOObjectConformsTo(service, kIOCDMediaClass)) ||
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   200
                 (IOObjectConformsTo(service, kIODVDMediaClass)) )
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   201
            {
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   202
                retval = 1;
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diff changeset
   203
            } /* if */
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   204
        } /* if */
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   205
        IOObjectRelease(service);
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   206
    } while ((service = IOIteratorNext(iter)) && (!retval));
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   208
    IOObjectRelease(iter);
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diff changeset
   209
    IOObjectRelease(service);
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   210
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   211
    return retval;
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   212
} /* darwinIsMountedDisc */
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   213
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   214
#endif /* !defined(PHYSFS_NO_CDROM_SUPPORT) */
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   215
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   216
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   217
void __PHYSFS_platformDetectAvailableCDs(PHYSFS_StringCallback cb, void *data)
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   218
{
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   219
#if !defined(PHYSFS_NO_CDROM_SUPPORT)
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   220
    const char *devPrefix = "/dev/";
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diff changeset
   221
    const int prefixLen = strlen(devPrefix);
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   222
    mach_port_t masterPort = 0;
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   223
    struct statfs *mntbufp;
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diff changeset
   224
    int i, mounts;
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diff changeset
   225
13e2037ebc79 Try using PhysicsFS.
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   226
    if (IOMasterPort(MACH_PORT_NULL, &masterPort) != KERN_SUCCESS)
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   227
        BAIL_MACRO(PHYSFS_ERR_OS_ERROR, ) /*return void*/;
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   228
13e2037ebc79 Try using PhysicsFS.
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   229
    mounts = getmntinfo(&mntbufp, MNT_WAIT);  /* NOT THREAD SAFE! */
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   230
    for (i = 0; i < mounts; i++)
13e2037ebc79 Try using PhysicsFS.
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diff changeset
   231
    {
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   232
        char *dev = mntbufp[i].f_mntfromname;
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   233
        char *mnt = mntbufp[i].f_mntonname;
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   234
        if (strncmp(dev, devPrefix, prefixLen) != 0)  /* a virtual device? */
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   235
            continue;
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diff changeset
   236
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   237
        dev += prefixLen;
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   238
        if (darwinIsMountedDisc(dev, masterPort))
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diff changeset
   239
            cb(data, mnt);
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diff changeset
   240
    } /* for */
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diff changeset
   241
#endif /* !defined(PHYSFS_NO_CDROM_SUPPORT) */
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   242
} /* __PHYSFS_platformDetectAvailableCDs */
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diff changeset
   243
13e2037ebc79 Try using PhysicsFS.
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diff changeset
   244
13e2037ebc79 Try using PhysicsFS.
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   245
static char *convertCFString(CFStringRef cfstr)
13e2037ebc79 Try using PhysicsFS.
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diff changeset
   246
{
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diff changeset
   247
    CFIndex len = CFStringGetMaximumSizeForEncoding(CFStringGetLength(cfstr),
13e2037ebc79 Try using PhysicsFS.
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   248
                                                    kCFStringEncodingUTF8) + 1;
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diff changeset
   249
    char *retval = (char *) allocator.Malloc(len);
13e2037ebc79 Try using PhysicsFS.
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diff changeset
   250
    BAIL_IF_MACRO(!retval, PHYSFS_ERR_OUT_OF_MEMORY, NULL);
13e2037ebc79 Try using PhysicsFS.
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diff changeset
   251
13e2037ebc79 Try using PhysicsFS.
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diff changeset
   252
    if (CFStringGetCString(cfstr, retval, len, kCFStringEncodingUTF8))
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diff changeset
   253
    {
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diff changeset
   254
        /* shrink overallocated buffer if possible... */
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diff changeset
   255
        CFIndex newlen = strlen(retval) + 1;
13e2037ebc79 Try using PhysicsFS.
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diff changeset
   256
        if (newlen < len)
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parents:
diff changeset
   257
        {
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diff changeset
   258
            void *ptr = allocator.Realloc(retval, newlen);
13e2037ebc79 Try using PhysicsFS.
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parents:
diff changeset
   259
            if (ptr != NULL)
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diff changeset
   260
                retval = (char *) ptr;
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diff changeset
   261
        } /* if */
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parents:
diff changeset
   262
    } /* if */
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parents:
diff changeset
   263
13e2037ebc79 Try using PhysicsFS.
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diff changeset
   264
    else  /* probably shouldn't fail, but just in case... */
13e2037ebc79 Try using PhysicsFS.
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parents:
diff changeset
   265
    {
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diff changeset
   266
        allocator.Free(retval);
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diff changeset
   267
        BAIL_MACRO(PHYSFS_ERR_OUT_OF_MEMORY, NULL);
13e2037ebc79 Try using PhysicsFS.
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parents:
diff changeset
   268
    } /* else */
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diff changeset
   269
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   270
    return retval;
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diff changeset
   271
} /* convertCFString */
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diff changeset
   272
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   273
13e2037ebc79 Try using PhysicsFS.
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diff changeset
   274
char *__PHYSFS_platformCalcBaseDir(const char *argv0)
13e2037ebc79 Try using PhysicsFS.
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   275
{
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diff changeset
   276
    CFURLRef cfurl = NULL;
13e2037ebc79 Try using PhysicsFS.
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diff changeset
   277
    CFStringRef cfstr = NULL;
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parents:
diff changeset
   278
    CFMutableStringRef cfmutstr = NULL;
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diff changeset
   279
    char *retval = NULL;
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   280
13e2037ebc79 Try using PhysicsFS.
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diff changeset
   281
    cfurl = CFBundleCopyBundleURL(CFBundleGetMainBundle());
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diff changeset
   282
    BAIL_IF_MACRO(cfurl == NULL, PHYSFS_ERR_OS_ERROR, NULL);
13e2037ebc79 Try using PhysicsFS.
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diff changeset
   283
    cfstr = CFURLCopyFileSystemPath(cfurl, kCFURLPOSIXPathStyle);
13e2037ebc79 Try using PhysicsFS.
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diff changeset
   284
    CFRelease(cfurl);
13e2037ebc79 Try using PhysicsFS.
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parents:
diff changeset
   285
    BAIL_IF_MACRO(!cfstr, PHYSFS_ERR_OUT_OF_MEMORY, NULL);
13e2037ebc79 Try using PhysicsFS.
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parents:
diff changeset
   286
    cfmutstr = CFStringCreateMutableCopy(cfallocator, 0, cfstr);
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diff changeset
   287
    CFRelease(cfstr);
13e2037ebc79 Try using PhysicsFS.
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parents:
diff changeset
   288
    BAIL_IF_MACRO(!cfmutstr, PHYSFS_ERR_OUT_OF_MEMORY, NULL);
13e2037ebc79 Try using PhysicsFS.
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diff changeset
   289
    CFStringAppendCString(cfmutstr, "/", kCFStringEncodingUTF8);
13e2037ebc79 Try using PhysicsFS.
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parents:
diff changeset
   290
    retval = convertCFString(cfmutstr);
13e2037ebc79 Try using PhysicsFS.
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parents:
diff changeset
   291
    CFRelease(cfmutstr);
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parents:
diff changeset
   292
13e2037ebc79 Try using PhysicsFS.
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parents:
diff changeset
   293
    return retval;  /* whew. */
13e2037ebc79 Try using PhysicsFS.
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diff changeset
   294
} /* __PHYSFS_platformCalcBaseDir */
13e2037ebc79 Try using PhysicsFS.
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parents:
diff changeset
   295
13e2037ebc79 Try using PhysicsFS.
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parents:
diff changeset
   296
13e2037ebc79 Try using PhysicsFS.
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parents:
diff changeset
   297
char *__PHYSFS_platformCalcPrefDir(const char *org, const char *app)
13e2037ebc79 Try using PhysicsFS.
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parents:
diff changeset
   298
{
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parents:
diff changeset
   299
    /* !!! FIXME: there's a real API to determine this */
13e2037ebc79 Try using PhysicsFS.
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diff changeset
   300
    const char *userdir = __PHYSFS_getUserDir();
13e2037ebc79 Try using PhysicsFS.
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parents:
diff changeset
   301
    const char *append = "Library/Application Support/";
13e2037ebc79 Try using PhysicsFS.
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parents:
diff changeset
   302
    const size_t len = strlen(userdir) + strlen(append) + strlen(app) + 2;
13e2037ebc79 Try using PhysicsFS.
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diff changeset
   303
    char *retval = allocator.Malloc(len);
13e2037ebc79 Try using PhysicsFS.
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parents:
diff changeset
   304
    BAIL_IF_MACRO(!retval, PHYSFS_ERR_OUT_OF_MEMORY, NULL);
13e2037ebc79 Try using PhysicsFS.
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parents:
diff changeset
   305
    snprintf(retval, len, "%s%s%s/", userdir, append, app);
13e2037ebc79 Try using PhysicsFS.
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parents:
diff changeset
   306
    return retval;
13e2037ebc79 Try using PhysicsFS.
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parents:
diff changeset
   307
} /* __PHYSFS_platformCalcPrefDir */
13e2037ebc79 Try using PhysicsFS.
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parents:
diff changeset
   308
13e2037ebc79 Try using PhysicsFS.
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parents:
diff changeset
   309
13e2037ebc79 Try using PhysicsFS.
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parents:
diff changeset
   310
/* Platform allocator uses default CFAllocator at PHYSFS_init() time. */
13e2037ebc79 Try using PhysicsFS.
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parents:
diff changeset
   311
13e2037ebc79 Try using PhysicsFS.
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parents:
diff changeset
   312
static CFAllocatorRef cfallocdef = NULL;
13e2037ebc79 Try using PhysicsFS.
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parents:
diff changeset
   313
13e2037ebc79 Try using PhysicsFS.
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parents:
diff changeset
   314
static int macosxAllocatorInit(void)
13e2037ebc79 Try using PhysicsFS.
unc0rr
parents:
diff changeset
   315
{
13e2037ebc79 Try using PhysicsFS.
unc0rr
parents:
diff changeset
   316
    int retval = 0;
13e2037ebc79 Try using PhysicsFS.
unc0rr
parents:
diff changeset
   317
    cfallocdef = CFAllocatorGetDefault();
13e2037ebc79 Try using PhysicsFS.
unc0rr
parents:
diff changeset
   318
    retval = (cfallocdef != NULL);
13e2037ebc79 Try using PhysicsFS.
unc0rr
parents:
diff changeset
   319
    if (retval)
13e2037ebc79 Try using PhysicsFS.
unc0rr
parents:
diff changeset
   320
        CFRetain(cfallocdef);
13e2037ebc79 Try using PhysicsFS.
unc0rr
parents:
diff changeset
   321
    return retval;
13e2037ebc79 Try using PhysicsFS.
unc0rr
parents:
diff changeset
   322
} /* macosxAllocatorInit */
13e2037ebc79 Try using PhysicsFS.
unc0rr
parents:
diff changeset
   323
13e2037ebc79 Try using PhysicsFS.
unc0rr
parents:
diff changeset
   324
13e2037ebc79 Try using PhysicsFS.
unc0rr
parents:
diff changeset
   325
static void macosxAllocatorDeinit(void)
13e2037ebc79 Try using PhysicsFS.
unc0rr
parents:
diff changeset
   326
{
13e2037ebc79 Try using PhysicsFS.
unc0rr
parents:
diff changeset
   327
    if (cfallocdef != NULL)
13e2037ebc79 Try using PhysicsFS.
unc0rr
parents:
diff changeset
   328
    {
13e2037ebc79 Try using PhysicsFS.
unc0rr
parents:
diff changeset
   329
        CFRelease(cfallocdef);
13e2037ebc79 Try using PhysicsFS.
unc0rr
parents:
diff changeset
   330
        cfallocdef = NULL;
13e2037ebc79 Try using PhysicsFS.
unc0rr
parents:
diff changeset
   331
    } /* if */
13e2037ebc79 Try using PhysicsFS.
unc0rr
parents:
diff changeset
   332
} /* macosxAllocatorDeinit */
13e2037ebc79 Try using PhysicsFS.
unc0rr
parents:
diff changeset
   333
13e2037ebc79 Try using PhysicsFS.
unc0rr
parents:
diff changeset
   334
13e2037ebc79 Try using PhysicsFS.
unc0rr
parents:
diff changeset
   335
static void *macosxAllocatorMalloc(PHYSFS_uint64 s)
13e2037ebc79 Try using PhysicsFS.
unc0rr
parents:
diff changeset
   336
{
13e2037ebc79 Try using PhysicsFS.
unc0rr
parents:
diff changeset
   337
    if (!__PHYSFS_ui64FitsAddressSpace(s))
13e2037ebc79 Try using PhysicsFS.
unc0rr
parents:
diff changeset
   338
        BAIL_MACRO(PHYSFS_ERR_OUT_OF_MEMORY, NULL);
13e2037ebc79 Try using PhysicsFS.
unc0rr
parents:
diff changeset
   339
    return CFAllocatorAllocate(cfallocdef, (CFIndex) s, 0);
13e2037ebc79 Try using PhysicsFS.
unc0rr
parents:
diff changeset
   340
} /* macosxAllocatorMalloc */
13e2037ebc79 Try using PhysicsFS.
unc0rr
parents:
diff changeset
   341
13e2037ebc79 Try using PhysicsFS.
unc0rr
parents:
diff changeset
   342
13e2037ebc79 Try using PhysicsFS.
unc0rr
parents:
diff changeset
   343
static void *macosxAllocatorRealloc(void *ptr, PHYSFS_uint64 s)
13e2037ebc79 Try using PhysicsFS.
unc0rr
parents:
diff changeset
   344
{
13e2037ebc79 Try using PhysicsFS.
unc0rr
parents:
diff changeset
   345
    if (!__PHYSFS_ui64FitsAddressSpace(s))
13e2037ebc79 Try using PhysicsFS.
unc0rr
parents:
diff changeset
   346
        BAIL_MACRO(PHYSFS_ERR_OUT_OF_MEMORY, NULL);
13e2037ebc79 Try using PhysicsFS.
unc0rr
parents:
diff changeset
   347
    return CFAllocatorReallocate(cfallocdef, ptr, (CFIndex) s, 0);
13e2037ebc79 Try using PhysicsFS.
unc0rr
parents:
diff changeset
   348
} /* macosxAllocatorRealloc */
13e2037ebc79 Try using PhysicsFS.
unc0rr
parents:
diff changeset
   349
13e2037ebc79 Try using PhysicsFS.
unc0rr
parents:
diff changeset
   350
13e2037ebc79 Try using PhysicsFS.
unc0rr
parents:
diff changeset
   351
static void macosxAllocatorFree(void *ptr)
13e2037ebc79 Try using PhysicsFS.
unc0rr
parents:
diff changeset
   352
{
13e2037ebc79 Try using PhysicsFS.
unc0rr
parents:
diff changeset
   353
    CFAllocatorDeallocate(cfallocdef, ptr);
13e2037ebc79 Try using PhysicsFS.
unc0rr
parents:
diff changeset
   354
} /* macosxAllocatorFree */
13e2037ebc79 Try using PhysicsFS.
unc0rr
parents:
diff changeset
   355
13e2037ebc79 Try using PhysicsFS.
unc0rr
parents:
diff changeset
   356
13e2037ebc79 Try using PhysicsFS.
unc0rr
parents:
diff changeset
   357
int __PHYSFS_platformSetDefaultAllocator(PHYSFS_Allocator *a)
13e2037ebc79 Try using PhysicsFS.
unc0rr
parents:
diff changeset
   358
{
13e2037ebc79 Try using PhysicsFS.
unc0rr
parents:
diff changeset
   359
    allocator.Init = macosxAllocatorInit;
13e2037ebc79 Try using PhysicsFS.
unc0rr
parents:
diff changeset
   360
    allocator.Deinit = macosxAllocatorDeinit;
13e2037ebc79 Try using PhysicsFS.
unc0rr
parents:
diff changeset
   361
    allocator.Malloc = macosxAllocatorMalloc;
13e2037ebc79 Try using PhysicsFS.
unc0rr
parents:
diff changeset
   362
    allocator.Realloc = macosxAllocatorRealloc;
13e2037ebc79 Try using PhysicsFS.
unc0rr
parents:
diff changeset
   363
    allocator.Free = macosxAllocatorFree;
13e2037ebc79 Try using PhysicsFS.
unc0rr
parents:
diff changeset
   364
    return 1;  /* return non-zero: we're supplying custom allocator. */
13e2037ebc79 Try using PhysicsFS.
unc0rr
parents:
diff changeset
   365
} /* __PHYSFS_platformSetDefaultAllocator */
13e2037ebc79 Try using PhysicsFS.
unc0rr
parents:
diff changeset
   366
13e2037ebc79 Try using PhysicsFS.
unc0rr
parents:
diff changeset
   367
#endif /* PHYSFS_PLATFORM_MACOSX */
13e2037ebc79 Try using PhysicsFS.
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parents:
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   368
13e2037ebc79 Try using PhysicsFS.
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/* end of macosx.c ... */
13e2037ebc79 Try using PhysicsFS.
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   370