--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/misc/physfs/src/physfs.c Sat Oct 20 00:20:39 2012 +0400
@@ -0,0 +1,2744 @@
+/**
+ * PhysicsFS; a portable, flexible file i/o abstraction.
+ *
+ * Documentation is in physfs.h. It's verbose, honest. :)
+ *
+ * Please see the file LICENSE.txt in the source's root directory.
+ *
+ * This file written by Ryan C. Gordon.
+ */
+
+/* !!! FIXME: ERR_PAST_EOF shouldn't trigger for reads. Just return zero. */
+/* !!! FIXME: use snprintf(), not sprintf(). */
+
+#define __PHYSICSFS_INTERNAL__
+#include "physfs_internal.h"
+
+
+typedef struct __PHYSFS_DIRHANDLE__
+{
+ void *opaque; /* Instance data unique to the archiver. */
+ char *dirName; /* Path to archive in platform-dependent notation. */
+ char *mountPoint; /* Mountpoint in virtual file tree. */
+ const PHYSFS_Archiver *funcs; /* Ptr to archiver info for this handle. */
+ struct __PHYSFS_DIRHANDLE__ *next; /* linked list stuff. */
+} DirHandle;
+
+
+typedef struct __PHYSFS_FILEHANDLE__
+{
+ PHYSFS_Io *io; /* Instance data unique to the archiver for this file. */
+ PHYSFS_uint8 forReading; /* Non-zero if reading, zero if write/append */
+ const DirHandle *dirHandle; /* Archiver instance that created this */
+ PHYSFS_uint8 *buffer; /* Buffer, if set (NULL otherwise). Don't touch! */
+ PHYSFS_uint32 bufsize; /* Bufsize, if set (0 otherwise). Don't touch! */
+ PHYSFS_uint32 buffill; /* Buffer fill size. Don't touch! */
+ PHYSFS_uint32 bufpos; /* Buffer position. Don't touch! */
+ struct __PHYSFS_FILEHANDLE__ *next; /* linked list stuff. */
+} FileHandle;
+
+
+typedef struct __PHYSFS_ERRSTATETYPE__
+{
+ void *tid;
+ PHYSFS_ErrorCode code;
+ struct __PHYSFS_ERRSTATETYPE__ *next;
+} ErrState;
+
+
+/* The various i/o drivers...some of these may not be compiled in. */
+extern const PHYSFS_Archiver __PHYSFS_Archiver_ZIP;
+extern const PHYSFS_Archiver __PHYSFS_Archiver_LZMA;
+extern const PHYSFS_Archiver __PHYSFS_Archiver_GRP;
+extern const PHYSFS_Archiver __PHYSFS_Archiver_QPAK;
+extern const PHYSFS_Archiver __PHYSFS_Archiver_HOG;
+extern const PHYSFS_Archiver __PHYSFS_Archiver_MVL;
+extern const PHYSFS_Archiver __PHYSFS_Archiver_WAD;
+extern const PHYSFS_Archiver __PHYSFS_Archiver_DIR;
+extern const PHYSFS_Archiver __PHYSFS_Archiver_ISO9660;
+
+static const PHYSFS_Archiver *staticArchivers[] =
+{
+#if PHYSFS_SUPPORTS_ZIP
+ &__PHYSFS_Archiver_ZIP,
+#endif
+#if PHYSFS_SUPPORTS_7Z
+ &__PHYSFS_Archiver_LZMA,
+#endif
+#if PHYSFS_SUPPORTS_GRP
+ &__PHYSFS_Archiver_GRP,
+#endif
+#if PHYSFS_SUPPORTS_QPAK
+ &__PHYSFS_Archiver_QPAK,
+#endif
+#if PHYSFS_SUPPORTS_HOG
+ &__PHYSFS_Archiver_HOG,
+#endif
+#if PHYSFS_SUPPORTS_MVL
+ &__PHYSFS_Archiver_MVL,
+#endif
+#if PHYSFS_SUPPORTS_WAD
+ &__PHYSFS_Archiver_WAD,
+#endif
+#if PHYSFS_SUPPORTS_ISO9660
+ &__PHYSFS_Archiver_ISO9660,
+#endif
+ NULL
+};
+
+
+
+/* General PhysicsFS state ... */
+static int initialized = 0;
+static ErrState *errorStates = NULL;
+static DirHandle *searchPath = NULL;
+static DirHandle *writeDir = NULL;
+static FileHandle *openWriteList = NULL;
+static FileHandle *openReadList = NULL;
+static char *baseDir = NULL;
+static char *userDir = NULL;
+static char *prefDir = NULL;
+static int allowSymLinks = 0;
+static const PHYSFS_Archiver **archivers = NULL;
+static const PHYSFS_ArchiveInfo **archiveInfo = NULL;
+
+/* mutexes ... */
+static void *errorLock = NULL; /* protects error message list. */
+static void *stateLock = NULL; /* protects other PhysFS static state. */
+
+/* allocator ... */
+static int externalAllocator = 0;
+PHYSFS_Allocator allocator;
+
+
+/* PHYSFS_Io implementation for i/o to physical filesystem... */
+
+/* !!! FIXME: maybe refcount the paths in a string pool? */
+typedef struct __PHYSFS_NativeIoInfo
+{
+ void *handle;
+ const char *path;
+ int mode; /* 'r', 'w', or 'a' */
+} NativeIoInfo;
+
+static PHYSFS_sint64 nativeIo_read(PHYSFS_Io *io, void *buf, PHYSFS_uint64 len)
+{
+ NativeIoInfo *info = (NativeIoInfo *) io->opaque;
+ return __PHYSFS_platformRead(info->handle, buf, len);
+} /* nativeIo_read */
+
+static PHYSFS_sint64 nativeIo_write(PHYSFS_Io *io, const void *buffer,
+ PHYSFS_uint64 len)
+{
+ NativeIoInfo *info = (NativeIoInfo *) io->opaque;
+ return __PHYSFS_platformWrite(info->handle, buffer, len);
+} /* nativeIo_write */
+
+static int nativeIo_seek(PHYSFS_Io *io, PHYSFS_uint64 offset)
+{
+ NativeIoInfo *info = (NativeIoInfo *) io->opaque;
+ return __PHYSFS_platformSeek(info->handle, offset);
+} /* nativeIo_seek */
+
+static PHYSFS_sint64 nativeIo_tell(PHYSFS_Io *io)
+{
+ NativeIoInfo *info = (NativeIoInfo *) io->opaque;
+ return __PHYSFS_platformTell(info->handle);
+} /* nativeIo_tell */
+
+static PHYSFS_sint64 nativeIo_length(PHYSFS_Io *io)
+{
+ NativeIoInfo *info = (NativeIoInfo *) io->opaque;
+ return __PHYSFS_platformFileLength(info->handle);
+} /* nativeIo_length */
+
+static PHYSFS_Io *nativeIo_duplicate(PHYSFS_Io *io)
+{
+ NativeIoInfo *info = (NativeIoInfo *) io->opaque;
+ return __PHYSFS_createNativeIo(info->path, info->mode);
+} /* nativeIo_duplicate */
+
+static int nativeIo_flush(PHYSFS_Io *io)
+{
+ return __PHYSFS_platformFlush(io->opaque);
+} /* nativeIo_flush */
+
+static void nativeIo_destroy(PHYSFS_Io *io)
+{
+ NativeIoInfo *info = (NativeIoInfo *) io->opaque;
+ __PHYSFS_platformClose(info->handle);
+ allocator.Free((void *) info->path);
+ allocator.Free(info);
+ allocator.Free(io);
+} /* nativeIo_destroy */
+
+static const PHYSFS_Io __PHYSFS_nativeIoInterface =
+{
+ CURRENT_PHYSFS_IO_API_VERSION, NULL,
+ nativeIo_read,
+ nativeIo_write,
+ nativeIo_seek,
+ nativeIo_tell,
+ nativeIo_length,
+ nativeIo_duplicate,
+ nativeIo_flush,
+ nativeIo_destroy
+};
+
+PHYSFS_Io *__PHYSFS_createNativeIo(const char *path, const int mode)
+{
+ PHYSFS_Io *io = NULL;
+ NativeIoInfo *info = NULL;
+ void *handle = NULL;
+ char *pathdup = NULL;
+
+ assert((mode == 'r') || (mode == 'w') || (mode == 'a'));
+
+ io = (PHYSFS_Io *) allocator.Malloc(sizeof (PHYSFS_Io));
+ GOTO_IF_MACRO(!io, PHYSFS_ERR_OUT_OF_MEMORY, createNativeIo_failed);
+ info = (NativeIoInfo *) allocator.Malloc(sizeof (NativeIoInfo));
+ GOTO_IF_MACRO(!info, PHYSFS_ERR_OUT_OF_MEMORY, createNativeIo_failed);
+ pathdup = (char *) allocator.Malloc(strlen(path) + 1);
+ GOTO_IF_MACRO(!pathdup, PHYSFS_ERR_OUT_OF_MEMORY, createNativeIo_failed);
+
+ if (mode == 'r')
+ handle = __PHYSFS_platformOpenRead(path);
+ else if (mode == 'w')
+ handle = __PHYSFS_platformOpenWrite(path);
+ else if (mode == 'a')
+ handle = __PHYSFS_platformOpenAppend(path);
+
+ GOTO_IF_MACRO(!handle, ERRPASS, createNativeIo_failed);
+
+ strcpy(pathdup, path);
+ info->handle = handle;
+ info->path = pathdup;
+ info->mode = mode;
+ memcpy(io, &__PHYSFS_nativeIoInterface, sizeof (*io));
+ io->opaque = info;
+ return io;
+
+createNativeIo_failed:
+ if (handle != NULL) __PHYSFS_platformClose(handle);
+ if (pathdup != NULL) allocator.Free(pathdup);
+ if (info != NULL) allocator.Free(info);
+ if (io != NULL) allocator.Free(io);
+ return NULL;
+} /* __PHYSFS_createNativeIo */
+
+
+/* PHYSFS_Io implementation for i/o to a memory buffer... */
+
+typedef struct __PHYSFS_MemoryIoInfo
+{
+ const PHYSFS_uint8 *buf;
+ PHYSFS_uint64 len;
+ PHYSFS_uint64 pos;
+ PHYSFS_Io *parent;
+ volatile PHYSFS_uint32 refcount;
+ void (*destruct)(void *);
+} MemoryIoInfo;
+
+static PHYSFS_sint64 memoryIo_read(PHYSFS_Io *io, void *buf, PHYSFS_uint64 len)
+{
+ MemoryIoInfo *info = (MemoryIoInfo *) io->opaque;
+ const PHYSFS_uint64 avail = info->len - info->pos;
+ assert(avail <= info->len);
+
+ if (avail == 0)
+ return 0; /* we're at EOF; nothing to do. */
+
+ if (len > avail)
+ len = avail;
+
+ memcpy(buf, info->buf + info->pos, (size_t) len);
+ info->pos += len;
+ return len;
+} /* memoryIo_read */
+
+static PHYSFS_sint64 memoryIo_write(PHYSFS_Io *io, const void *buffer,
+ PHYSFS_uint64 len)
+{
+ BAIL_MACRO(PHYSFS_ERR_OPEN_FOR_READING, -1);
+} /* memoryIo_write */
+
+static int memoryIo_seek(PHYSFS_Io *io, PHYSFS_uint64 offset)
+{
+ MemoryIoInfo *info = (MemoryIoInfo *) io->opaque;
+ BAIL_IF_MACRO(offset > info->len, PHYSFS_ERR_PAST_EOF, 0);
+ info->pos = offset;
+ return 1;
+} /* memoryIo_seek */
+
+static PHYSFS_sint64 memoryIo_tell(PHYSFS_Io *io)
+{
+ const MemoryIoInfo *info = (MemoryIoInfo *) io->opaque;
+ return (PHYSFS_sint64) info->pos;
+} /* memoryIo_tell */
+
+static PHYSFS_sint64 memoryIo_length(PHYSFS_Io *io)
+{
+ const MemoryIoInfo *info = (MemoryIoInfo *) io->opaque;
+ return (PHYSFS_sint64) info->len;
+} /* memoryIo_length */
+
+static PHYSFS_Io *memoryIo_duplicate(PHYSFS_Io *io)
+{
+ MemoryIoInfo *info = (MemoryIoInfo *) io->opaque;
+ MemoryIoInfo *newinfo = NULL;
+ PHYSFS_Io *parent = info->parent;
+ PHYSFS_Io *retval = NULL;
+
+ /* avoid deep copies. */
+ assert((!parent) || (!((MemoryIoInfo *) parent->opaque)->parent) );
+
+ /* share the buffer between duplicates. */
+ if (parent != NULL) /* dup the parent, increment its refcount. */
+ return parent->duplicate(parent);
+
+ /* we're the parent. */
+
+ retval = (PHYSFS_Io *) allocator.Malloc(sizeof (PHYSFS_Io));
+ BAIL_IF_MACRO(!retval, PHYSFS_ERR_OUT_OF_MEMORY, NULL);
+ newinfo = (MemoryIoInfo *) allocator.Malloc(sizeof (MemoryIoInfo));
+ if (!newinfo)
+ {
+ allocator.Free(retval);
+ BAIL_MACRO(PHYSFS_ERR_OUT_OF_MEMORY, NULL);
+ } /* if */
+
+ /* !!! FIXME: want lockless atomic increment. */
+ __PHYSFS_platformGrabMutex(stateLock);
+ info->refcount++;
+ __PHYSFS_platformReleaseMutex(stateLock);
+
+ memset(newinfo, '\0', sizeof (*info));
+ newinfo->buf = info->buf;
+ newinfo->len = info->len;
+ newinfo->pos = 0;
+ newinfo->parent = io;
+ newinfo->refcount = 0;
+ newinfo->destruct = NULL;
+
+ memcpy(retval, io, sizeof (*retval));
+ retval->opaque = newinfo;
+ return retval;
+} /* memoryIo_duplicate */
+
+static int memoryIo_flush(PHYSFS_Io *io) { return 1; /* it's read-only. */ }
+
+static void memoryIo_destroy(PHYSFS_Io *io)
+{
+ MemoryIoInfo *info = (MemoryIoInfo *) io->opaque;
+ PHYSFS_Io *parent = info->parent;
+ int should_die = 0;
+
+ if (parent != NULL)
+ {
+ assert(info->buf == ((MemoryIoInfo *) info->parent->opaque)->buf);
+ assert(info->len == ((MemoryIoInfo *) info->parent->opaque)->len);
+ assert(info->refcount == 0);
+ assert(info->destruct == NULL);
+ allocator.Free(info);
+ allocator.Free(io);
+ parent->destroy(parent); /* decrements refcount. */
+ return;
+ } /* if */
+
+ /* we _are_ the parent. */
+ assert(info->refcount > 0); /* even in a race, we hold a reference. */
+
+ /* !!! FIXME: want lockless atomic decrement. */
+ __PHYSFS_platformGrabMutex(stateLock);
+ info->refcount--;
+ should_die = (info->refcount == 0);
+ __PHYSFS_platformReleaseMutex(stateLock);
+
+ if (should_die)
+ {
+ void (*destruct)(void *) = info->destruct;
+ void *buf = (void *) info->buf;
+ io->opaque = NULL; /* kill this here in case of race. */
+ allocator.Free(info);
+ allocator.Free(io);
+ if (destruct != NULL)
+ destruct(buf);
+ } /* if */
+} /* memoryIo_destroy */
+
+
+static const PHYSFS_Io __PHYSFS_memoryIoInterface =
+{
+ CURRENT_PHYSFS_IO_API_VERSION, NULL,
+ memoryIo_read,
+ memoryIo_write,
+ memoryIo_seek,
+ memoryIo_tell,
+ memoryIo_length,
+ memoryIo_duplicate,
+ memoryIo_flush,
+ memoryIo_destroy
+};
+
+PHYSFS_Io *__PHYSFS_createMemoryIo(const void *buf, PHYSFS_uint64 len,
+ void (*destruct)(void *))
+{
+ PHYSFS_Io *io = NULL;
+ MemoryIoInfo *info = NULL;
+
+ io = (PHYSFS_Io *) allocator.Malloc(sizeof (PHYSFS_Io));
+ GOTO_IF_MACRO(!io, PHYSFS_ERR_OUT_OF_MEMORY, createMemoryIo_failed);
+ info = (MemoryIoInfo *) allocator.Malloc(sizeof (MemoryIoInfo));
+ GOTO_IF_MACRO(!info, PHYSFS_ERR_OUT_OF_MEMORY, createMemoryIo_failed);
+
+ memset(info, '\0', sizeof (*info));
+ info->buf = (const PHYSFS_uint8 *) buf;
+ info->len = len;
+ info->pos = 0;
+ info->parent = NULL;
+ info->refcount = 1;
+ info->destruct = destruct;
+
+ memcpy(io, &__PHYSFS_memoryIoInterface, sizeof (*io));
+ io->opaque = info;
+ return io;
+
+createMemoryIo_failed:
+ if (info != NULL) allocator.Free(info);
+ if (io != NULL) allocator.Free(io);
+ return NULL;
+} /* __PHYSFS_createMemoryIo */
+
+
+/* PHYSFS_Io implementation for i/o to a PHYSFS_File... */
+
+static PHYSFS_sint64 handleIo_read(PHYSFS_Io *io, void *buf, PHYSFS_uint64 len)
+{
+ return PHYSFS_readBytes((PHYSFS_File *) io->opaque, buf, len);
+} /* handleIo_read */
+
+static PHYSFS_sint64 handleIo_write(PHYSFS_Io *io, const void *buffer,
+ PHYSFS_uint64 len)
+{
+ return PHYSFS_writeBytes((PHYSFS_File *) io->opaque, buffer, len);
+} /* handleIo_write */
+
+static int handleIo_seek(PHYSFS_Io *io, PHYSFS_uint64 offset)
+{
+ return PHYSFS_seek((PHYSFS_File *) io->opaque, offset);
+} /* handleIo_seek */
+
+static PHYSFS_sint64 handleIo_tell(PHYSFS_Io *io)
+{
+ return PHYSFS_tell((PHYSFS_File *) io->opaque);
+} /* handleIo_tell */
+
+static PHYSFS_sint64 handleIo_length(PHYSFS_Io *io)
+{
+ return PHYSFS_fileLength((PHYSFS_File *) io->opaque);
+} /* handleIo_length */
+
+static PHYSFS_Io *handleIo_duplicate(PHYSFS_Io *io)
+{
+ /*
+ * There's no duplicate at the PHYSFS_File level, so we break the
+ * abstraction. We're allowed to: we're physfs.c!
+ */
+ FileHandle *origfh = (FileHandle *) io->opaque;
+ FileHandle *newfh = (FileHandle *) allocator.Malloc(sizeof (FileHandle));
+ PHYSFS_Io *retval = NULL;
+
+ GOTO_IF_MACRO(!newfh, PHYSFS_ERR_OUT_OF_MEMORY, handleIo_dupe_failed);
+ memset(newfh, '\0', sizeof (*newfh));
+
+ retval = (PHYSFS_Io *) allocator.Malloc(sizeof (PHYSFS_Io));
+ GOTO_IF_MACRO(!retval, PHYSFS_ERR_OUT_OF_MEMORY, handleIo_dupe_failed);
+
+#if 0 /* we don't buffer the duplicate, at least not at the moment. */
+ if (origfh->buffer != NULL)
+ {
+ newfh->buffer = (PHYSFS_uint8 *) allocator.Malloc(origfh->bufsize);
+ if (!newfh->buffer)
+ GOTO_MACRO(PHYSFS_ERR_OUT_OF_MEMORY, handleIo_dupe_failed);
+ newfh->bufsize = origfh->bufsize;
+ } /* if */
+#endif
+
+ newfh->io = origfh->io->duplicate(origfh->io);
+ GOTO_IF_MACRO(!newfh->io, ERRPASS, handleIo_dupe_failed);
+
+ newfh->forReading = origfh->forReading;
+ newfh->dirHandle = origfh->dirHandle;
+
+ __PHYSFS_platformGrabMutex(stateLock);
+ if (newfh->forReading)
+ {
+ newfh->next = openReadList;
+ openReadList = newfh;
+ } /* if */
+ else
+ {
+ newfh->next = openWriteList;
+ openWriteList = newfh;
+ } /* else */
+ __PHYSFS_platformReleaseMutex(stateLock);
+
+ memcpy(retval, io, sizeof (PHYSFS_Io));
+ retval->opaque = newfh;
+ return retval;
+
+handleIo_dupe_failed:
+ if (newfh)
+ {
+ if (newfh->io != NULL) newfh->io->destroy(newfh->io);
+ if (newfh->buffer != NULL) allocator.Free(newfh->buffer);
+ allocator.Free(newfh);
+ } /* if */
+
+ return NULL;
+} /* handleIo_duplicate */
+
+static int handleIo_flush(PHYSFS_Io *io)
+{
+ return PHYSFS_flush((PHYSFS_File *) io->opaque);
+} /* handleIo_flush */
+
+static void handleIo_destroy(PHYSFS_Io *io)
+{
+ if (io->opaque != NULL)
+ PHYSFS_close((PHYSFS_File *) io->opaque);
+ allocator.Free(io);
+} /* handleIo_destroy */
+
+static const PHYSFS_Io __PHYSFS_handleIoInterface =
+{
+ CURRENT_PHYSFS_IO_API_VERSION, NULL,
+ handleIo_read,
+ handleIo_write,
+ handleIo_seek,
+ handleIo_tell,
+ handleIo_length,
+ handleIo_duplicate,
+ handleIo_flush,
+ handleIo_destroy
+};
+
+static PHYSFS_Io *__PHYSFS_createHandleIo(PHYSFS_File *f)
+{
+ PHYSFS_Io *io = (PHYSFS_Io *) allocator.Malloc(sizeof (PHYSFS_Io));
+ BAIL_IF_MACRO(!io, PHYSFS_ERR_OUT_OF_MEMORY, NULL);
+ memcpy(io, &__PHYSFS_handleIoInterface, sizeof (*io));
+ io->opaque = f;
+ return io;
+} /* __PHYSFS_createHandleIo */
+
+
+/* functions ... */
+
+typedef struct
+{
+ char **list;
+ PHYSFS_uint32 size;
+ PHYSFS_ErrorCode errcode;
+} EnumStringListCallbackData;
+
+static void enumStringListCallback(void *data, const char *str)
+{
+ void *ptr;
+ char *newstr;
+ EnumStringListCallbackData *pecd = (EnumStringListCallbackData *) data;
+
+ if (pecd->errcode)
+ return;
+
+ ptr = allocator.Realloc(pecd->list, (pecd->size + 2) * sizeof (char *));
+ newstr = (char *) allocator.Malloc(strlen(str) + 1);
+ if (ptr != NULL)
+ pecd->list = (char **) ptr;
+
+ if ((ptr == NULL) || (newstr == NULL))
+ {
+ pecd->errcode = PHYSFS_ERR_OUT_OF_MEMORY;
+ pecd->list[pecd->size] = NULL;
+ PHYSFS_freeList(pecd->list);
+ return;
+ } /* if */
+
+ strcpy(newstr, str);
+ pecd->list[pecd->size] = newstr;
+ pecd->size++;
+} /* enumStringListCallback */
+
+
+static char **doEnumStringList(void (*func)(PHYSFS_StringCallback, void *))
+{
+ EnumStringListCallbackData ecd;
+ memset(&ecd, '\0', sizeof (ecd));
+ ecd.list = (char **) allocator.Malloc(sizeof (char *));
+ BAIL_IF_MACRO(!ecd.list, PHYSFS_ERR_OUT_OF_MEMORY, NULL);
+ func(enumStringListCallback, &ecd);
+
+ if (ecd.errcode)
+ {
+ __PHYSFS_setError(ecd.errcode);
+ return NULL;
+ } /* if */
+
+ ecd.list[ecd.size] = NULL;
+ return ecd.list;
+} /* doEnumStringList */
+
+
+static void __PHYSFS_bubble_sort(void *a, size_t lo, size_t hi,
+ int (*cmpfn)(void *, size_t, size_t),
+ void (*swapfn)(void *, size_t, size_t))
+{
+ size_t i;
+ int sorted;
+
+ do
+ {
+ sorted = 1;
+ for (i = lo; i < hi; i++)
+ {
+ if (cmpfn(a, i, i + 1) > 0)
+ {
+ swapfn(a, i, i + 1);
+ sorted = 0;
+ } /* if */
+ } /* for */
+ } while (!sorted);
+} /* __PHYSFS_bubble_sort */
+
+
+static void __PHYSFS_quick_sort(void *a, size_t lo, size_t hi,
+ int (*cmpfn)(void *, size_t, size_t),
+ void (*swapfn)(void *, size_t, size_t))
+{
+ size_t i;
+ size_t j;
+ size_t v;
+
+ if ((hi - lo) <= PHYSFS_QUICKSORT_THRESHOLD)
+ __PHYSFS_bubble_sort(a, lo, hi, cmpfn, swapfn);
+ else
+ {
+ i = (hi + lo) / 2;
+
+ if (cmpfn(a, lo, i) > 0) swapfn(a, lo, i);
+ if (cmpfn(a, lo, hi) > 0) swapfn(a, lo, hi);
+ if (cmpfn(a, i, hi) > 0) swapfn(a, i, hi);
+
+ j = hi - 1;
+ swapfn(a, i, j);
+ i = lo;
+ v = j;
+ while (1)
+ {
+ while(cmpfn(a, ++i, v) < 0) { /* do nothing */ }
+ while(cmpfn(a, --j, v) > 0) { /* do nothing */ }
+ if (j < i)
+ break;
+ swapfn(a, i, j);
+ } /* while */
+ if (i != (hi-1))
+ swapfn(a, i, hi-1);
+ __PHYSFS_quick_sort(a, lo, j, cmpfn, swapfn);
+ __PHYSFS_quick_sort(a, i+1, hi, cmpfn, swapfn);
+ } /* else */
+} /* __PHYSFS_quick_sort */
+
+
+void __PHYSFS_sort(void *entries, size_t max,
+ int (*cmpfn)(void *, size_t, size_t),
+ void (*swapfn)(void *, size_t, size_t))
+{
+ /*
+ * Quicksort w/ Bubblesort fallback algorithm inspired by code from here:
+ * http://www.cs.ubc.ca/spider/harrison/Java/sorting-demo.html
+ */
+ if (max > 0)
+ __PHYSFS_quick_sort(entries, 0, max - 1, cmpfn, swapfn);
+} /* __PHYSFS_sort */
+
+
+static ErrState *findErrorForCurrentThread(void)
+{
+ ErrState *i;
+ void *tid;
+
+ if (errorLock != NULL)
+ __PHYSFS_platformGrabMutex(errorLock);
+
+ if (errorStates != NULL)
+ {
+ tid = __PHYSFS_platformGetThreadID();
+
+ for (i = errorStates; i != NULL; i = i->next)
+ {
+ if (i->tid == tid)
+ {
+ if (errorLock != NULL)
+ __PHYSFS_platformReleaseMutex(errorLock);
+ return i;
+ } /* if */
+ } /* for */
+ } /* if */
+
+ if (errorLock != NULL)
+ __PHYSFS_platformReleaseMutex(errorLock);
+
+ return NULL; /* no error available. */
+} /* findErrorForCurrentThread */
+
+
+void __PHYSFS_setError(const PHYSFS_ErrorCode errcode)
+{
+ ErrState *err;
+
+ if (!errcode)
+ return;
+
+ err = findErrorForCurrentThread();
+ if (err == NULL)
+ {
+ err = (ErrState *) allocator.Malloc(sizeof (ErrState));
+ if (err == NULL)
+ return; /* uhh...? */
+
+ memset(err, '\0', sizeof (ErrState));
+ err->tid = __PHYSFS_platformGetThreadID();
+
+ if (errorLock != NULL)
+ __PHYSFS_platformGrabMutex(errorLock);
+
+ err->next = errorStates;
+ errorStates = err;
+
+ if (errorLock != NULL)
+ __PHYSFS_platformReleaseMutex(errorLock);
+ } /* if */
+
+ err->code = errcode;
+} /* __PHYSFS_setError */
+
+
+PHYSFS_ErrorCode PHYSFS_getLastErrorCode(void)
+{
+ ErrState *err = findErrorForCurrentThread();
+ const PHYSFS_ErrorCode retval = (err) ? err->code : PHYSFS_ERR_OK;
+ if (err)
+ err->code = PHYSFS_ERR_OK;
+ return retval;
+} /* PHYSFS_getLastErrorCode */
+
+
+PHYSFS_DECL const char *PHYSFS_getErrorByCode(PHYSFS_ErrorCode code)
+{
+ switch (code)
+ {
+ case PHYSFS_ERR_OK: return "no error";
+ case PHYSFS_ERR_OTHER_ERROR: return "unknown error";
+ case PHYSFS_ERR_OUT_OF_MEMORY: return "out of memory";
+ case PHYSFS_ERR_NOT_INITIALIZED: return "not initialized";
+ case PHYSFS_ERR_IS_INITIALIZED: return "already initialized";
+ case PHYSFS_ERR_ARGV0_IS_NULL: return "argv[0] is NULL";
+ case PHYSFS_ERR_UNSUPPORTED: return "unsupported";
+ case PHYSFS_ERR_PAST_EOF: return "past end of file";
+ case PHYSFS_ERR_FILES_STILL_OPEN: return "files still open";
+ case PHYSFS_ERR_INVALID_ARGUMENT: return "invalid argument";
+ case PHYSFS_ERR_NOT_MOUNTED: return "not mounted";
+ case PHYSFS_ERR_NO_SUCH_PATH: return "no such path";
+ case PHYSFS_ERR_SYMLINK_FORBIDDEN: return "symlinks are forbidden";
+ case PHYSFS_ERR_NO_WRITE_DIR: return "write directory is not set";
+ case PHYSFS_ERR_OPEN_FOR_READING: return "file open for reading";
+ case PHYSFS_ERR_OPEN_FOR_WRITING: return "file open for writing";
+ case PHYSFS_ERR_NOT_A_FILE: return "not a file";
+ case PHYSFS_ERR_READ_ONLY: return "read-only filesystem";
+ case PHYSFS_ERR_CORRUPT: return "corrupted";
+ case PHYSFS_ERR_SYMLINK_LOOP: return "infinite symbolic link loop";
+ case PHYSFS_ERR_IO: return "i/o error";
+ case PHYSFS_ERR_PERMISSION: return "permission denied";
+ case PHYSFS_ERR_NO_SPACE: return "no space available for writing";
+ case PHYSFS_ERR_BAD_FILENAME: return "filename is illegal or insecure";
+ case PHYSFS_ERR_BUSY: return "tried to modify a file the OS needs";
+ case PHYSFS_ERR_DIR_NOT_EMPTY: return "directory isn't empty";
+ case PHYSFS_ERR_OS_ERROR: return "OS reported an error";
+ } /* switch */
+
+ return NULL; /* don't know this error code. */
+} /* PHYSFS_getErrorByCode */
+
+
+void PHYSFS_setErrorCode(PHYSFS_ErrorCode code)
+{
+ __PHYSFS_setError(code);
+} /* PHYSFS_setErrorCode */
+
+
+const char *PHYSFS_getLastError(void)
+{
+ const PHYSFS_ErrorCode err = PHYSFS_getLastErrorCode();
+ return (err) ? PHYSFS_getErrorByCode(err) : NULL;
+} /* PHYSFS_getLastError */
+
+
+/* MAKE SURE that errorLock is held before calling this! */
+static void freeErrorStates(void)
+{
+ ErrState *i;
+ ErrState *next;
+
+ for (i = errorStates; i != NULL; i = next)
+ {
+ next = i->next;
+ allocator.Free(i);
+ } /* for */
+
+ errorStates = NULL;
+} /* freeErrorStates */
+
+
+void PHYSFS_getLinkedVersion(PHYSFS_Version *ver)
+{
+ if (ver != NULL)
+ {
+ ver->major = PHYSFS_VER_MAJOR;
+ ver->minor = PHYSFS_VER_MINOR;
+ ver->patch = PHYSFS_VER_PATCH;
+ } /* if */
+} /* PHYSFS_getLinkedVersion */
+
+
+static const char *find_filename_extension(const char *fname)
+{
+ const char *retval = NULL;
+ if (fname != NULL)
+ {
+ const char *p = strchr(fname, '.');
+ retval = p;
+
+ while (p != NULL)
+ {
+ p = strchr(p + 1, '.');
+ if (p != NULL)
+ retval = p;
+ } /* while */
+
+ if (retval != NULL)
+ retval++; /* skip '.' */
+ } /* if */
+
+ return retval;
+} /* find_filename_extension */
+
+
+static DirHandle *tryOpenDir(PHYSFS_Io *io, const PHYSFS_Archiver *funcs,
+ const char *d, int forWriting)
+{
+ DirHandle *retval = NULL;
+ void *opaque = NULL;
+
+ if (io != NULL)
+ BAIL_IF_MACRO(!io->seek(io, 0), ERRPASS, NULL);
+
+ opaque = funcs->openArchive(io, d, forWriting);
+ if (opaque != NULL)
+ {
+ retval = (DirHandle *) allocator.Malloc(sizeof (DirHandle));
+ if (retval == NULL)
+ funcs->closeArchive(opaque);
+ else
+ {
+ memset(retval, '\0', sizeof (DirHandle));
+ retval->mountPoint = NULL;
+ retval->funcs = funcs;
+ retval->opaque = opaque;
+ } /* else */
+ } /* if */
+
+ return retval;
+} /* tryOpenDir */
+
+
+static DirHandle *openDirectory(PHYSFS_Io *io, const char *d, int forWriting)
+{
+ DirHandle *retval = NULL;
+ const PHYSFS_Archiver **i;
+ const char *ext;
+
+ assert((io != NULL) || (d != NULL));
+
+ if (io == NULL)
+ {
+ /* DIR gets first shot (unlike the rest, it doesn't deal with files). */
+ retval = tryOpenDir(io, &__PHYSFS_Archiver_DIR, d, forWriting);
+ if (retval != NULL)
+ return retval;
+
+ io = __PHYSFS_createNativeIo(d, forWriting ? 'w' : 'r');
+ BAIL_IF_MACRO(!io, ERRPASS, 0);
+ } /* if */
+
+ ext = find_filename_extension(d);
+ if (ext != NULL)
+ {
+ /* Look for archivers with matching file extensions first... */
+ for (i = archivers; (*i != NULL) && (retval == NULL); i++)
+ {
+ if (__PHYSFS_stricmpASCII(ext, (*i)->info.extension) == 0)
+ retval = tryOpenDir(io, *i, d, forWriting);
+ } /* for */
+
+ /* failing an exact file extension match, try all the others... */
+ for (i = archivers; (*i != NULL) && (retval == NULL); i++)
+ {
+ if (__PHYSFS_stricmpASCII(ext, (*i)->info.extension) != 0)
+ retval = tryOpenDir(io, *i, d, forWriting);
+ } /* for */
+ } /* if */
+
+ else /* no extension? Try them all. */
+ {
+ for (i = archivers; (*i != NULL) && (retval == NULL); i++)
+ retval = tryOpenDir(io, *i, d, forWriting);
+ } /* else */
+
+ BAIL_IF_MACRO(!retval, PHYSFS_ERR_UNSUPPORTED, NULL);
+ return retval;
+} /* openDirectory */
+
+
+/*
+ * Make a platform-independent path string sane. Doesn't actually check the
+ * file hierarchy, it just cleans up the string.
+ * (dst) must be a buffer at least as big as (src), as this is where the
+ * cleaned up string is deposited.
+ * If there are illegal bits in the path (".." entries, etc) then we
+ * return zero and (dst) is undefined. Non-zero if the path was sanitized.
+ */
+static int sanitizePlatformIndependentPath(const char *src, char *dst)
+{
+ char *prev;
+ char ch;
+
+ while (*src == '/') /* skip initial '/' chars... */
+ src++;
+
+ prev = dst;
+ do
+ {
+ ch = *(src++);
+
+ if ((ch == ':') || (ch == '\\')) /* illegal chars in a physfs path. */
+ BAIL_MACRO(PHYSFS_ERR_BAD_FILENAME, 0);
+
+ if (ch == '/') /* path separator. */
+ {
+ *dst = '\0'; /* "." and ".." are illegal pathnames. */
+ if ((strcmp(prev, ".") == 0) || (strcmp(prev, "..") == 0))
+ BAIL_MACRO(PHYSFS_ERR_BAD_FILENAME, 0);
+
+ while (*src == '/') /* chop out doubles... */
+ src++;
+
+ if (*src == '\0') /* ends with a pathsep? */
+ break; /* we're done, don't add final pathsep to dst. */
+
+ prev = dst + 1;
+ } /* if */
+
+ *(dst++) = ch;
+ } while (ch != '\0');
+
+ return 1;
+} /* sanitizePlatformIndependentPath */
+
+
+/*
+ * Figure out if (fname) is part of (h)'s mountpoint. (fname) must be an
+ * output from sanitizePlatformIndependentPath(), so that it is in a known
+ * state.
+ *
+ * This only finds legitimate segments of a mountpoint. If the mountpoint is
+ * "/a/b/c" and (fname) is "/a/b/c", "/", or "/a/b/c/d", then the results are
+ * all zero. "/a/b" will succeed, though.
+ */
+static int partOfMountPoint(DirHandle *h, char *fname)
+{
+ /* !!! FIXME: This code feels gross. */
+ int rc;
+ size_t len, mntpntlen;
+
+ if (h->mountPoint == NULL)
+ return 0;
+ else if (*fname == '\0')
+ return 1;
+
+ len = strlen(fname);
+ mntpntlen = strlen(h->mountPoint);
+ if (len > mntpntlen) /* can't be a subset of mountpoint. */
+ return 0;
+
+ /* if true, must be not a match or a complete match, but not a subset. */
+ if ((len + 1) == mntpntlen)
+ return 0;
+
+ rc = strncmp(fname, h->mountPoint, len); /* !!! FIXME: case insensitive? */
+ if (rc != 0)
+ return 0; /* not a match. */
+
+ /* make sure /a/b matches /a/b/ and not /a/bc ... */
+ return h->mountPoint[len] == '/';
+} /* partOfMountPoint */
+
+
+static DirHandle *createDirHandle(PHYSFS_Io *io, const char *newDir,
+ const char *mountPoint, int forWriting)
+{
+ DirHandle *dirHandle = NULL;
+ char *tmpmntpnt = NULL;
+
+ if (mountPoint != NULL)
+ {
+ const size_t len = strlen(mountPoint) + 1;
+ tmpmntpnt = (char *) __PHYSFS_smallAlloc(len);
+ GOTO_IF_MACRO(!tmpmntpnt, PHYSFS_ERR_OUT_OF_MEMORY, badDirHandle);
+ if (!sanitizePlatformIndependentPath(mountPoint, tmpmntpnt))
+ goto badDirHandle;
+ mountPoint = tmpmntpnt; /* sanitized version. */
+ } /* if */
+
+ dirHandle = openDirectory(io, newDir, forWriting);
+ GOTO_IF_MACRO(!dirHandle, ERRPASS, badDirHandle);
+
+ if (newDir == NULL)
+ dirHandle->dirName = NULL;
+ else
+ {
+ dirHandle->dirName = (char *) allocator.Malloc(strlen(newDir) + 1);
+ if (!dirHandle->dirName)
+ GOTO_MACRO(PHYSFS_ERR_OUT_OF_MEMORY, badDirHandle);
+ strcpy(dirHandle->dirName, newDir);
+ } /* else */
+
+ if ((mountPoint != NULL) && (*mountPoint != '\0'))
+ {
+ dirHandle->mountPoint = (char *)allocator.Malloc(strlen(mountPoint)+2);
+ if (!dirHandle->mountPoint)
+ GOTO_MACRO(PHYSFS_ERR_OUT_OF_MEMORY, badDirHandle);
+ strcpy(dirHandle->mountPoint, mountPoint);
+ strcat(dirHandle->mountPoint, "/");
+ } /* if */
+
+ __PHYSFS_smallFree(tmpmntpnt);
+ return dirHandle;
+
+badDirHandle:
+ if (dirHandle != NULL)
+ {
+ dirHandle->funcs->closeArchive(dirHandle->opaque);
+ allocator.Free(dirHandle->dirName);
+ allocator.Free(dirHandle->mountPoint);
+ allocator.Free(dirHandle);
+ } /* if */
+
+ __PHYSFS_smallFree(tmpmntpnt);
+ return NULL;
+} /* createDirHandle */
+
+
+/* MAKE SURE you've got the stateLock held before calling this! */
+static int freeDirHandle(DirHandle *dh, FileHandle *openList)
+{
+ FileHandle *i;
+
+ if (dh == NULL)
+ return 1;
+
+ for (i = openList; i != NULL; i = i->next)
+ BAIL_IF_MACRO(i->dirHandle == dh, PHYSFS_ERR_FILES_STILL_OPEN, 0);
+
+ dh->funcs->closeArchive(dh->opaque);
+ allocator.Free(dh->dirName);
+ allocator.Free(dh->mountPoint);
+ allocator.Free(dh);
+ return 1;
+} /* freeDirHandle */
+
+
+static char *calculateBaseDir(const char *argv0)
+{
+ const char dirsep = __PHYSFS_platformDirSeparator;
+ char *retval = NULL;
+ char *ptr = NULL;
+
+ /* Give the platform layer first shot at this. */
+ retval = __PHYSFS_platformCalcBaseDir(argv0);
+ if (retval != NULL)
+ return retval;
+
+ /* We need argv0 to go on. */
+ BAIL_IF_MACRO(argv0 == NULL, PHYSFS_ERR_ARGV0_IS_NULL, NULL);
+
+ ptr = strrchr(argv0, dirsep);
+ if (ptr != NULL)
+ {
+ const size_t size = ((size_t) (ptr - argv0)) + 1;
+ retval = (char *) allocator.Malloc(size + 1);
+ BAIL_IF_MACRO(!retval, PHYSFS_ERR_OUT_OF_MEMORY, NULL);
+ memcpy(retval, argv0, size);
+ retval[size] = '\0';
+ return retval;
+ } /* if */
+
+ /* argv0 wasn't helpful. */
+ BAIL_MACRO(PHYSFS_ERR_INVALID_ARGUMENT, NULL);
+} /* calculateBaseDir */
+
+
+static int initializeMutexes(void)
+{
+ errorLock = __PHYSFS_platformCreateMutex();
+ if (errorLock == NULL)
+ goto initializeMutexes_failed;
+
+ stateLock = __PHYSFS_platformCreateMutex();
+ if (stateLock == NULL)
+ goto initializeMutexes_failed;
+
+ return 1; /* success. */
+
+initializeMutexes_failed:
+ if (errorLock != NULL)
+ __PHYSFS_platformDestroyMutex(errorLock);
+
+ if (stateLock != NULL)
+ __PHYSFS_platformDestroyMutex(stateLock);
+
+ errorLock = stateLock = NULL;
+ return 0; /* failed. */
+} /* initializeMutexes */
+
+
+static void setDefaultAllocator(void);
+
+static int initStaticArchivers(void)
+{
+ const size_t numStaticArchivers = __PHYSFS_ARRAYLEN(staticArchivers);
+ const size_t len = numStaticArchivers * sizeof (void *);
+ size_t i;
+
+ assert(numStaticArchivers > 0); /* seriously, none at all?! */
+ assert(staticArchivers[numStaticArchivers - 1] == NULL);
+
+ archiveInfo = (const PHYSFS_ArchiveInfo **) allocator.Malloc(len);
+ BAIL_IF_MACRO(!archiveInfo, PHYSFS_ERR_OUT_OF_MEMORY, 0);
+ archivers = (const PHYSFS_Archiver **) allocator.Malloc(len);
+ BAIL_IF_MACRO(!archivers, PHYSFS_ERR_OUT_OF_MEMORY, 0);
+
+ for (i = 0; i < numStaticArchivers - 1; i++)
+ archiveInfo[i] = &staticArchivers[i]->info;
+ archiveInfo[numStaticArchivers - 1] = NULL;
+
+ memcpy(archivers, staticArchivers, len);
+
+ return 1;
+} /* initStaticArchivers */
+
+
+static int doDeinit(void);
+
+int PHYSFS_init(const char *argv0)
+{
+ BAIL_IF_MACRO(initialized, PHYSFS_ERR_IS_INITIALIZED, 0);
+
+ if (!externalAllocator)
+ setDefaultAllocator();
+
+ if ((allocator.Init != NULL) && (!allocator.Init())) return 0;
+
+ if (!__PHYSFS_platformInit())
+ {
+ if (allocator.Deinit != NULL) allocator.Deinit();
+ return 0;
+ } /* if */
+
+ /* everything below here can be cleaned up safely by doDeinit(). */
+
+ if (!initializeMutexes()) goto initFailed;
+
+ baseDir = calculateBaseDir(argv0);
+ if (!baseDir) goto initFailed;
+
+ userDir = __PHYSFS_platformCalcUserDir();
+ if (!userDir) goto initFailed;
+
+ /* Platform layer is required to append a dirsep. */
+ assert(baseDir[strlen(baseDir) - 1] == __PHYSFS_platformDirSeparator);
+ assert(userDir[strlen(userDir) - 1] == __PHYSFS_platformDirSeparator);
+
+ if (!initStaticArchivers()) goto initFailed;
+
+ initialized = 1;
+
+ /* This makes sure that the error subsystem is initialized. */
+ __PHYSFS_setError(PHYSFS_getLastErrorCode());
+
+ return 1;
+
+initFailed:
+ doDeinit();
+ return 0;
+} /* PHYSFS_init */
+
+
+/* MAKE SURE you hold stateLock before calling this! */
+static int closeFileHandleList(FileHandle **list)
+{
+ FileHandle *i;
+ FileHandle *next = NULL;
+
+ for (i = *list; i != NULL; i = next)
+ {
+ PHYSFS_Io *io = i->io;
+ next = i->next;
+
+ if (!io->flush(io))
+ {
+ *list = i;
+ return 0;
+ } /* if */
+
+ io->destroy(io);
+ allocator.Free(i);
+ } /* for */
+
+ *list = NULL;
+ return 1;
+} /* closeFileHandleList */
+
+
+/* MAKE SURE you hold the stateLock before calling this! */
+static void freeSearchPath(void)
+{
+ DirHandle *i;
+ DirHandle *next = NULL;
+
+ closeFileHandleList(&openReadList);
+
+ if (searchPath != NULL)
+ {
+ for (i = searchPath; i != NULL; i = next)
+ {
+ next = i->next;
+ freeDirHandle(i, openReadList);
+ } /* for */
+ searchPath = NULL;
+ } /* if */
+} /* freeSearchPath */
+
+
+static int doDeinit(void)
+{
+ BAIL_IF_MACRO(!__PHYSFS_platformDeinit(), ERRPASS, 0);
+
+ closeFileHandleList(&openWriteList);
+ BAIL_IF_MACRO(!PHYSFS_setWriteDir(NULL), PHYSFS_ERR_FILES_STILL_OPEN, 0);
+
+ freeSearchPath();
+ freeErrorStates();
+
+ if (baseDir != NULL)
+ {
+ allocator.Free(baseDir);
+ baseDir = NULL;
+ } /* if */
+
+ if (userDir != NULL)
+ {
+ allocator.Free(userDir);
+ userDir = NULL;
+ } /* if */
+
+ if (prefDir != NULL)
+ {
+ allocator.Free(prefDir);
+ prefDir = NULL;
+ } /* if */
+
+ if (archiveInfo != NULL)
+ {
+ allocator.Free(archiveInfo);
+ archiveInfo = NULL;
+ } /* if */
+
+ if (archivers != NULL)
+ {
+ allocator.Free(archivers);
+ archivers = NULL;
+ } /* if */
+
+ allowSymLinks = 0;
+ initialized = 0;
+
+ if (errorLock) __PHYSFS_platformDestroyMutex(errorLock);
+ if (stateLock) __PHYSFS_platformDestroyMutex(stateLock);
+
+ if (allocator.Deinit != NULL)
+ allocator.Deinit();
+
+ errorLock = stateLock = NULL;
+ return 1;
+} /* doDeinit */
+
+
+int PHYSFS_deinit(void)
+{
+ BAIL_IF_MACRO(!initialized, PHYSFS_ERR_NOT_INITIALIZED, 0);
+ return doDeinit();
+} /* PHYSFS_deinit */
+
+
+int PHYSFS_isInit(void)
+{
+ return initialized;
+} /* PHYSFS_isInit */
+
+
+const PHYSFS_ArchiveInfo **PHYSFS_supportedArchiveTypes(void)
+{
+ BAIL_IF_MACRO(!initialized, PHYSFS_ERR_NOT_INITIALIZED, NULL);
+ return archiveInfo;
+} /* PHYSFS_supportedArchiveTypes */
+
+
+void PHYSFS_freeList(void *list)
+{
+ void **i;
+ if (list != NULL)
+ {
+ for (i = (void **) list; *i != NULL; i++)
+ allocator.Free(*i);
+
+ allocator.Free(list);
+ } /* if */
+} /* PHYSFS_freeList */
+
+
+const char *PHYSFS_getDirSeparator(void)
+{
+ static char retval[2] = { __PHYSFS_platformDirSeparator, '\0' };
+ return retval;
+} /* PHYSFS_getDirSeparator */
+
+
+char **PHYSFS_getCdRomDirs(void)
+{
+ return doEnumStringList(__PHYSFS_platformDetectAvailableCDs);
+} /* PHYSFS_getCdRomDirs */
+
+
+void PHYSFS_getCdRomDirsCallback(PHYSFS_StringCallback callback, void *data)
+{
+ __PHYSFS_platformDetectAvailableCDs(callback, data);
+} /* PHYSFS_getCdRomDirsCallback */
+
+
+const char *PHYSFS_getPrefDir(const char *org, const char *app)
+{
+ const char dirsep = __PHYSFS_platformDirSeparator;
+ PHYSFS_Stat statbuf;
+ char *ptr = NULL;
+ char *endstr = NULL;
+ int exists = 0;
+
+ BAIL_IF_MACRO(!initialized, PHYSFS_ERR_NOT_INITIALIZED, 0);
+ BAIL_IF_MACRO(!org, PHYSFS_ERR_INVALID_ARGUMENT, NULL);
+ BAIL_IF_MACRO(*org == '\0', PHYSFS_ERR_INVALID_ARGUMENT, NULL);
+ BAIL_IF_MACRO(!app, PHYSFS_ERR_INVALID_ARGUMENT, NULL);
+ BAIL_IF_MACRO(*app == '\0', PHYSFS_ERR_INVALID_ARGUMENT, NULL);
+
+ allocator.Free(prefDir);
+ prefDir = __PHYSFS_platformCalcPrefDir(org, app);
+ BAIL_IF_MACRO(!prefDir, ERRPASS, NULL);
+
+ assert(strlen(prefDir) > 0);
+ endstr = prefDir + (strlen(prefDir) - 1);
+ assert(*endstr == dirsep);
+ *endstr = '\0'; /* mask out the final dirsep for now. */
+
+ if (!__PHYSFS_platformStat(prefDir, &exists, &statbuf))
+ {
+ for (ptr = strchr(prefDir, dirsep); ptr; ptr = strchr(ptr+1, dirsep))
+ {
+ *ptr = '\0';
+ __PHYSFS_platformMkDir(prefDir);
+ *ptr = dirsep;
+ } /* for */
+
+ if (!__PHYSFS_platformMkDir(prefDir))
+ {
+ allocator.Free(prefDir);
+ prefDir = NULL;
+ } /* if */
+ } /* if */
+
+ *endstr = dirsep; /* readd the final dirsep. */
+
+ return prefDir;
+} /* PHYSFS_getPrefDir */
+
+
+const char *PHYSFS_getBaseDir(void)
+{
+ return baseDir; /* this is calculated in PHYSFS_init()... */
+} /* PHYSFS_getBaseDir */
+
+
+const char *__PHYSFS_getUserDir(void) /* not deprecated internal version. */
+{
+ return userDir; /* this is calculated in PHYSFS_init()... */
+} /* __PHYSFS_getUserDir */
+
+
+const char *PHYSFS_getUserDir(void)
+{
+ return __PHYSFS_getUserDir();
+} /* PHYSFS_getUserDir */
+
+
+const char *PHYSFS_getWriteDir(void)
+{
+ const char *retval = NULL;
+
+ __PHYSFS_platformGrabMutex(stateLock);
+ if (writeDir != NULL)
+ retval = writeDir->dirName;
+ __PHYSFS_platformReleaseMutex(stateLock);
+
+ return retval;
+} /* PHYSFS_getWriteDir */
+
+
+int PHYSFS_setWriteDir(const char *newDir)
+{
+ int retval = 1;
+
+ __PHYSFS_platformGrabMutex(stateLock);
+
+ if (writeDir != NULL)
+ {
+ BAIL_IF_MACRO_MUTEX(!freeDirHandle(writeDir, openWriteList), ERRPASS,
+ stateLock, 0);
+ writeDir = NULL;
+ } /* if */
+
+ if (newDir != NULL)
+ {
+ /* !!! FIXME: PHYSFS_Io shouldn't be NULL */
+ writeDir = createDirHandle(NULL, newDir, NULL, 1);
+ retval = (writeDir != NULL);
+ } /* if */
+
+ __PHYSFS_platformReleaseMutex(stateLock);
+
+ return retval;
+} /* PHYSFS_setWriteDir */
+
+
+static int doMount(PHYSFS_Io *io, const char *fname,
+ const char *mountPoint, int appendToPath)
+{
+ DirHandle *dh;
+ DirHandle *prev = NULL;
+ DirHandle *i;
+
+ if (mountPoint == NULL)
+ mountPoint = "/";
+
+ __PHYSFS_platformGrabMutex(stateLock);
+
+ if (fname != NULL)
+ {
+ for (i = searchPath; i != NULL; i = i->next)
+ {
+ /* already in search path? */
+ if ((i->dirName != NULL) && (strcmp(fname, i->dirName) == 0))
+ BAIL_MACRO_MUTEX(ERRPASS, stateLock, 1);
+ prev = i;
+ } /* for */
+ } /* if */
+
+ dh = createDirHandle(io, fname, mountPoint, 0);
+ BAIL_IF_MACRO_MUTEX(!dh, ERRPASS, stateLock, 0);
+
+ if (appendToPath)
+ {
+ if (prev == NULL)
+ searchPath = dh;
+ else
+ prev->next = dh;
+ } /* if */
+ else
+ {
+ dh->next = searchPath;
+ searchPath = dh;
+ } /* else */
+
+ __PHYSFS_platformReleaseMutex(stateLock);
+ return 1;
+} /* doMount */
+
+
+int PHYSFS_mountIo(PHYSFS_Io *io, const char *fname,
+ const char *mountPoint, int appendToPath)
+{
+ BAIL_IF_MACRO(!io, PHYSFS_ERR_INVALID_ARGUMENT, 0);
+ BAIL_IF_MACRO(io->version != 0, PHYSFS_ERR_UNSUPPORTED, 0);
+ return doMount(io, fname, mountPoint, appendToPath);
+} /* PHYSFS_mountIo */
+
+
+int PHYSFS_mountMemory(const void *buf, PHYSFS_uint64 len, void (*del)(void *),
+ const char *fname, const char *mountPoint,
+ int appendToPath)
+{
+ int retval = 0;
+ PHYSFS_Io *io = NULL;
+
+ BAIL_IF_MACRO(!buf, PHYSFS_ERR_INVALID_ARGUMENT, 0);
+
+ io = __PHYSFS_createMemoryIo(buf, len, del);
+ BAIL_IF_MACRO(!io, ERRPASS, 0);
+ retval = doMount(io, fname, mountPoint, appendToPath);
+ if (!retval)
+ {
+ /* docs say not to call (del) in case of failure, so cheat. */
+ MemoryIoInfo *info = (MemoryIoInfo *) io->opaque;
+ info->destruct = NULL;
+ io->destroy(io);
+ } /* if */
+
+ return retval;
+} /* PHYSFS_mountMemory */
+
+
+int PHYSFS_mountHandle(PHYSFS_File *file, const char *fname,
+ const char *mountPoint, int appendToPath)
+{
+ int retval = 0;
+ PHYSFS_Io *io = NULL;
+
+ BAIL_IF_MACRO(file == NULL, PHYSFS_ERR_INVALID_ARGUMENT, 0);
+
+ io = __PHYSFS_createHandleIo(file);
+ BAIL_IF_MACRO(!io, ERRPASS, 0);
+ retval = doMount(io, fname, mountPoint, appendToPath);
+ if (!retval)
+ {
+ /* docs say not to destruct in case of failure, so cheat. */
+ io->opaque = NULL;
+ io->destroy(io);
+ } /* if */
+
+ return retval;
+} /* PHYSFS_mountHandle */
+
+
+int PHYSFS_mount(const char *newDir, const char *mountPoint, int appendToPath)
+{
+ BAIL_IF_MACRO(!newDir, PHYSFS_ERR_INVALID_ARGUMENT, 0);
+ return doMount(NULL, newDir, mountPoint, appendToPath);
+} /* PHYSFS_mount */
+
+
+int PHYSFS_addToSearchPath(const char *newDir, int appendToPath)
+{
+ return doMount(NULL, newDir, NULL, appendToPath);
+} /* PHYSFS_addToSearchPath */
+
+
+int PHYSFS_removeFromSearchPath(const char *oldDir)
+{
+ return PHYSFS_unmount(oldDir);
+} /* PHYSFS_removeFromSearchPath */
+
+
+int PHYSFS_unmount(const char *oldDir)
+{
+ DirHandle *i;
+ DirHandle *prev = NULL;
+ DirHandle *next = NULL;
+
+ BAIL_IF_MACRO(oldDir == NULL, PHYSFS_ERR_INVALID_ARGUMENT, 0);
+
+ __PHYSFS_platformGrabMutex(stateLock);
+ for (i = searchPath; i != NULL; i = i->next)
+ {
+ if (strcmp(i->dirName, oldDir) == 0)
+ {
+ next = i->next;
+ BAIL_IF_MACRO_MUTEX(!freeDirHandle(i, openReadList), ERRPASS,
+ stateLock, 0);
+
+ if (prev == NULL)
+ searchPath = next;
+ else
+ prev->next = next;
+
+ BAIL_MACRO_MUTEX(ERRPASS, stateLock, 1);
+ } /* if */
+ prev = i;
+ } /* for */
+
+ BAIL_MACRO_MUTEX(PHYSFS_ERR_NOT_MOUNTED, stateLock, 0);
+} /* PHYSFS_unmount */
+
+
+char **PHYSFS_getSearchPath(void)
+{
+ return doEnumStringList(PHYSFS_getSearchPathCallback);
+} /* PHYSFS_getSearchPath */
+
+
+const char *PHYSFS_getMountPoint(const char *dir)
+{
+ DirHandle *i;
+ __PHYSFS_platformGrabMutex(stateLock);
+ for (i = searchPath; i != NULL; i = i->next)
+ {
+ if (strcmp(i->dirName, dir) == 0)
+ {
+ const char *retval = ((i->mountPoint) ? i->mountPoint : "/");
+ __PHYSFS_platformReleaseMutex(stateLock);
+ return retval;
+ } /* if */
+ } /* for */
+ __PHYSFS_platformReleaseMutex(stateLock);
+
+ BAIL_MACRO(PHYSFS_ERR_NOT_MOUNTED, NULL);
+} /* PHYSFS_getMountPoint */
+
+
+void PHYSFS_getSearchPathCallback(PHYSFS_StringCallback callback, void *data)
+{
+ DirHandle *i;
+
+ __PHYSFS_platformGrabMutex(stateLock);
+
+ for (i = searchPath; i != NULL; i = i->next)
+ callback(data, i->dirName);
+
+ __PHYSFS_platformReleaseMutex(stateLock);
+} /* PHYSFS_getSearchPathCallback */
+
+
+/* Split out to avoid stack allocation in a loop. */
+static void setSaneCfgAddPath(const char *i, const size_t l, const char *dirsep,
+ int archivesFirst)
+{
+ const char *d = PHYSFS_getRealDir(i);
+ const size_t allocsize = strlen(d) + strlen(dirsep) + l + 1;
+ char *str = (char *) __PHYSFS_smallAlloc(allocsize);
+ if (str != NULL)
+ {
+ sprintf(str, "%s%s%s", d, dirsep, i);
+ PHYSFS_mount(str, NULL, archivesFirst == 0);
+ __PHYSFS_smallFree(str);
+ } /* if */
+} /* setSaneCfgAddPath */
+
+
+int PHYSFS_setSaneConfig(const char *organization, const char *appName,
+ const char *archiveExt, int includeCdRoms,
+ int archivesFirst)
+{
+ const char *dirsep = PHYSFS_getDirSeparator();
+ const char *basedir;
+ const char *prefdir;
+
+ BAIL_IF_MACRO(!initialized, PHYSFS_ERR_NOT_INITIALIZED, 0);
+
+ prefdir = PHYSFS_getPrefDir(organization, appName);
+ BAIL_IF_MACRO(!prefdir, ERRPASS, 0);
+
+ basedir = PHYSFS_getBaseDir();
+ BAIL_IF_MACRO(!basedir, ERRPASS, 0);
+
+ BAIL_IF_MACRO(!PHYSFS_setWriteDir(prefdir), PHYSFS_ERR_NO_WRITE_DIR, 0);
+
+ /* Put write dir first in search path... */
+ PHYSFS_mount(prefdir, NULL, 0);
+
+ /* Put base path on search path... */
+ PHYSFS_mount(basedir, NULL, 1);
+
+ /* handle CD-ROMs... */
+ if (includeCdRoms)
+ {
+ char **cds = PHYSFS_getCdRomDirs();
+ char **i;
+ for (i = cds; *i != NULL; i++)
+ PHYSFS_mount(*i, NULL, 1);
+ PHYSFS_freeList(cds);
+ } /* if */
+
+ /* Root out archives, and add them to search path... */
+ if (archiveExt != NULL)
+ {
+ char **rc = PHYSFS_enumerateFiles("/");
+ char **i;
+ size_t extlen = strlen(archiveExt);
+ char *ext;
+
+ for (i = rc; *i != NULL; i++)
+ {
+ size_t l = strlen(*i);
+ if ((l > extlen) && ((*i)[l - extlen - 1] == '.'))
+ {
+ ext = (*i) + (l - extlen);
+ if (__PHYSFS_stricmpASCII(ext, archiveExt) == 0)
+ setSaneCfgAddPath(*i, l, dirsep, archivesFirst);
+ } /* if */
+ } /* for */
+
+ PHYSFS_freeList(rc);
+ } /* if */
+
+ return 1;
+} /* PHYSFS_setSaneConfig */
+
+
+void PHYSFS_permitSymbolicLinks(int allow)
+{
+ allowSymLinks = allow;
+} /* PHYSFS_permitSymbolicLinks */
+
+
+int PHYSFS_symbolicLinksPermitted(void)
+{
+ return allowSymLinks;
+} /* PHYSFS_symbolicLinksPermitted */
+
+
+/*
+ * Verify that (fname) (in platform-independent notation), in relation
+ * to (h) is secure. That means that each element of fname is checked
+ * for symlinks (if they aren't permitted). This also allows for quick
+ * rejection of files that exist outside an archive's mountpoint.
+ *
+ * With some exceptions (like PHYSFS_mkdir(), which builds multiple subdirs
+ * at a time), you should always pass zero for "allowMissing" for efficiency.
+ *
+ * (fname) must point to an output from sanitizePlatformIndependentPath(),
+ * since it will make sure that path names are in the right format for
+ * passing certain checks. It will also do checks for "insecure" pathnames
+ * like ".." which should be done once instead of once per archive. This also
+ * gives us license to treat (fname) as scratch space in this function.
+ *
+ * Returns non-zero if string is safe, zero if there's a security issue.
+ * PHYSFS_getLastError() will specify what was wrong. (*fname) will be
+ * updated to point past any mount point elements so it is prepared to
+ * be used with the archiver directly.
+ */
+static int verifyPath(DirHandle *h, char **_fname, int allowMissing)
+{
+ char *fname = *_fname;
+ int retval = 1;
+ char *start;
+ char *end;
+
+ if (*fname == '\0') /* quick rejection. */
+ return 1;
+
+ /* !!! FIXME: This codeblock sucks. */
+ if (h->mountPoint != NULL) /* NULL mountpoint means "/". */
+ {
+ size_t mntpntlen = strlen(h->mountPoint);
+ size_t len = strlen(fname);
+ assert(mntpntlen > 1); /* root mount points should be NULL. */
+ /* not under the mountpoint, so skip this archive. */
+ BAIL_IF_MACRO(len < mntpntlen-1, PHYSFS_ERR_NO_SUCH_PATH, 0);
+ /* !!! FIXME: Case insensitive? */
+ retval = strncmp(h->mountPoint, fname, mntpntlen-1);
+ BAIL_IF_MACRO(retval != 0, PHYSFS_ERR_NO_SUCH_PATH, 0);
+ if (len > mntpntlen-1) /* corner case... */
+ BAIL_IF_MACRO(fname[mntpntlen-1]!='/', PHYSFS_ERR_NO_SUCH_PATH, 0);
+ fname += mntpntlen-1; /* move to start of actual archive path. */
+ if (*fname == '/')
+ fname++;
+ *_fname = fname; /* skip mountpoint for later use. */
+ retval = 1; /* may be reset, below. */
+ } /* if */
+
+ start = fname;
+ if (!allowSymLinks)
+ {
+ while (1)
+ {
+ PHYSFS_Stat statbuf;
+ int rc = 0;
+ end = strchr(start, '/');
+
+ if (end != NULL) *end = '\0';
+ rc = h->funcs->stat(h->opaque, fname, &retval, &statbuf);
+ if (rc)
+ rc = (statbuf.filetype == PHYSFS_FILETYPE_SYMLINK);
+ if (end != NULL) *end = '/';
+
+ /* insecure path (has a disallowed symlink in it)? */
+ BAIL_IF_MACRO(rc, PHYSFS_ERR_SYMLINK_FORBIDDEN, 0);
+
+ /* break out early if path element is missing. */
+ if (!retval)
+ {
+ /*
+ * We need to clear it if it's the last element of the path,
+ * since this might be a non-existant file we're opening
+ * for writing...
+ */
+ if ((end == NULL) || (allowMissing))
+ retval = 1;
+ break;
+ } /* if */
+
+ if (end == NULL)
+ break;
+
+ start = end + 1;
+ } /* while */
+ } /* if */
+
+ return retval;
+} /* verifyPath */
+
+
+static int doMkdir(const char *_dname, char *dname)
+{
+ DirHandle *h;
+ char *start;
+ char *end;
+ int retval = 0;
+ int exists = 1; /* force existance check on first path element. */
+
+ BAIL_IF_MACRO(!sanitizePlatformIndependentPath(_dname, dname), ERRPASS, 0);
+
+ __PHYSFS_platformGrabMutex(stateLock);
+ BAIL_IF_MACRO_MUTEX(!writeDir, PHYSFS_ERR_NO_WRITE_DIR, stateLock, 0);
+ h = writeDir;
+ BAIL_IF_MACRO_MUTEX(!verifyPath(h, &dname, 1), ERRPASS, stateLock, 0);
+
+ start = dname;
+ while (1)
+ {
+ end = strchr(start, '/');
+ if (end != NULL)
+ *end = '\0';
+
+ /* only check for existance if all parent dirs existed, too... */
+ if (exists)
+ {
+ PHYSFS_Stat statbuf;
+ const int rc = h->funcs->stat(h->opaque, dname, &exists, &statbuf);
+ retval = ((rc) && (statbuf.filetype == PHYSFS_FILETYPE_DIRECTORY));
+ } /* if */
+
+ if (!exists)
+ retval = h->funcs->mkdir(h->opaque, dname);
+
+ if (!retval)
+ break;
+
+ if (end == NULL)
+ break;
+
+ *end = '/';
+ start = end + 1;
+ } /* while */
+
+ __PHYSFS_platformReleaseMutex(stateLock);
+ return retval;
+} /* doMkdir */
+
+
+int PHYSFS_mkdir(const char *_dname)
+{
+ int retval = 0;
+ char *dname;
+ size_t len;
+
+ BAIL_IF_MACRO(!_dname, PHYSFS_ERR_INVALID_ARGUMENT, 0);
+ len = strlen(_dname) + 1;
+ dname = (char *) __PHYSFS_smallAlloc(len);
+ BAIL_IF_MACRO(!dname, PHYSFS_ERR_OUT_OF_MEMORY, 0);
+ retval = doMkdir(_dname, dname);
+ __PHYSFS_smallFree(dname);
+ return retval;
+} /* PHYSFS_mkdir */
+
+
+static int doDelete(const char *_fname, char *fname)
+{
+ int retval;
+ DirHandle *h;
+ BAIL_IF_MACRO(!sanitizePlatformIndependentPath(_fname, fname), ERRPASS, 0);
+
+ __PHYSFS_platformGrabMutex(stateLock);
+
+ BAIL_IF_MACRO_MUTEX(!writeDir, PHYSFS_ERR_NO_WRITE_DIR, stateLock, 0);
+ h = writeDir;
+ BAIL_IF_MACRO_MUTEX(!verifyPath(h, &fname, 0), ERRPASS, stateLock, 0);
+ retval = h->funcs->remove(h->opaque, fname);
+
+ __PHYSFS_platformReleaseMutex(stateLock);
+ return retval;
+} /* doDelete */
+
+
+int PHYSFS_delete(const char *_fname)
+{
+ int retval;
+ char *fname;
+ size_t len;
+
+ BAIL_IF_MACRO(!_fname, PHYSFS_ERR_INVALID_ARGUMENT, 0);
+ len = strlen(_fname) + 1;
+ fname = (char *) __PHYSFS_smallAlloc(len);
+ BAIL_IF_MACRO(!fname, PHYSFS_ERR_OUT_OF_MEMORY, 0);
+ retval = doDelete(_fname, fname);
+ __PHYSFS_smallFree(fname);
+ return retval;
+} /* PHYSFS_delete */
+
+
+const char *PHYSFS_getRealDir(const char *_fname)
+{
+ const char *retval = NULL;
+ char *fname = NULL;
+ size_t len;
+
+ BAIL_IF_MACRO(!_fname, PHYSFS_ERR_INVALID_ARGUMENT, NULL);
+ len = strlen(_fname) + 1;
+ fname = __PHYSFS_smallAlloc(len);
+ BAIL_IF_MACRO(!fname, PHYSFS_ERR_OUT_OF_MEMORY, NULL);
+ if (sanitizePlatformIndependentPath(_fname, fname))
+ {
+ DirHandle *i;
+ __PHYSFS_platformGrabMutex(stateLock);
+ for (i = searchPath; i != NULL; i = i->next)
+ {
+ char *arcfname = fname;
+ if (partOfMountPoint(i, arcfname))
+ {
+ retval = i->dirName;
+ break;
+ } /* if */
+ else if (verifyPath(i, &arcfname, 0))
+ {
+ PHYSFS_Stat statbuf;
+ int exists = 0;
+ if (i->funcs->stat(i->opaque, arcfname, &exists, &statbuf))
+ {
+ if (exists)
+ retval = i->dirName;
+ break;
+ } /* if */
+ } /* if */
+ } /* for */
+ __PHYSFS_platformReleaseMutex(stateLock);
+ } /* if */
+
+ __PHYSFS_smallFree(fname);
+ return retval;
+} /* PHYSFS_getRealDir */
+
+
+static int locateInStringList(const char *str,
+ char **list,
+ PHYSFS_uint32 *pos)
+{
+ PHYSFS_uint32 len = *pos;
+ PHYSFS_uint32 half_len;
+ PHYSFS_uint32 lo = 0;
+ PHYSFS_uint32 middle;
+ int cmp;
+
+ while (len > 0)
+ {
+ half_len = len >> 1;
+ middle = lo + half_len;
+ cmp = strcmp(list[middle], str);
+
+ if (cmp == 0) /* it's in the list already. */
+ return 1;
+ else if (cmp > 0)
+ len = half_len;
+ else
+ {
+ lo = middle + 1;
+ len -= half_len + 1;
+ } /* else */
+ } /* while */
+
+ *pos = lo;
+ return 0;
+} /* locateInStringList */
+
+
+static void enumFilesCallback(void *data, const char *origdir, const char *str)
+{
+ PHYSFS_uint32 pos;
+ void *ptr;
+ char *newstr;
+ EnumStringListCallbackData *pecd = (EnumStringListCallbackData *) data;
+
+ /*
+ * See if file is in the list already, and if not, insert it in there
+ * alphabetically...
+ */
+ pos = pecd->size;
+ if (locateInStringList(str, pecd->list, &pos))
+ return; /* already in the list. */
+
+ ptr = allocator.Realloc(pecd->list, (pecd->size + 2) * sizeof (char *));
+ newstr = (char *) allocator.Malloc(strlen(str) + 1);
+ if (ptr != NULL)
+ pecd->list = (char **) ptr;
+
+ if ((ptr == NULL) || (newstr == NULL))
+ return; /* better luck next time. */
+
+ strcpy(newstr, str);
+
+ if (pos != pecd->size)
+ {
+ memmove(&pecd->list[pos+1], &pecd->list[pos],
+ sizeof (char *) * ((pecd->size) - pos));
+ } /* if */
+
+ pecd->list[pos] = newstr;
+ pecd->size++;
+} /* enumFilesCallback */
+
+
+char **PHYSFS_enumerateFiles(const char *path)
+{
+ EnumStringListCallbackData ecd;
+ memset(&ecd, '\0', sizeof (ecd));
+ ecd.list = (char **) allocator.Malloc(sizeof (char *));
+ BAIL_IF_MACRO(!ecd.list, PHYSFS_ERR_OUT_OF_MEMORY, NULL);
+ PHYSFS_enumerateFilesCallback(path, enumFilesCallback, &ecd);
+ ecd.list[ecd.size] = NULL;
+ return ecd.list;
+} /* PHYSFS_enumerateFiles */
+
+
+/*
+ * Broke out to seperate function so we can use stack allocation gratuitously.
+ */
+static void enumerateFromMountPoint(DirHandle *i, const char *arcfname,
+ PHYSFS_EnumFilesCallback callback,
+ const char *_fname, void *data)
+{
+ const size_t len = strlen(arcfname);
+ char *ptr = NULL;
+ char *end = NULL;
+ const size_t slen = strlen(i->mountPoint) + 1;
+ char *mountPoint = (char *) __PHYSFS_smallAlloc(slen);
+
+ if (mountPoint == NULL)
+ return; /* oh well. */
+
+ strcpy(mountPoint, i->mountPoint);
+ ptr = mountPoint + ((len) ? len + 1 : 0);
+ end = strchr(ptr, '/');
+ assert(end); /* should always find a terminating '/'. */
+ *end = '\0';
+ callback(data, _fname, ptr);
+ __PHYSFS_smallFree(mountPoint);
+} /* enumerateFromMountPoint */
+
+
+/* !!! FIXME: this should report error conditions. */
+void PHYSFS_enumerateFilesCallback(const char *_fname,
+ PHYSFS_EnumFilesCallback callback,
+ void *data)
+{
+ size_t len;
+ char *fname;
+
+ BAIL_IF_MACRO(!_fname, PHYSFS_ERR_INVALID_ARGUMENT, ) /*0*/;
+ BAIL_IF_MACRO(!callback, PHYSFS_ERR_INVALID_ARGUMENT, ) /*0*/;
+
+ len = strlen(_fname) + 1;
+ fname = (char *) __PHYSFS_smallAlloc(len);
+ BAIL_IF_MACRO(!fname, PHYSFS_ERR_OUT_OF_MEMORY, ) /*0*/;
+
+ if (sanitizePlatformIndependentPath(_fname, fname))
+ {
+ DirHandle *i;
+ int noSyms;
+
+ __PHYSFS_platformGrabMutex(stateLock);
+ noSyms = !allowSymLinks;
+ for (i = searchPath; i != NULL; i = i->next)
+ {
+ char *arcfname = fname;
+ if (partOfMountPoint(i, arcfname))
+ enumerateFromMountPoint(i, arcfname, callback, _fname, data);
+
+ else if (verifyPath(i, &arcfname, 0))
+ {
+ i->funcs->enumerateFiles(i->opaque, arcfname, noSyms,
+ callback, _fname, data);
+ } /* else if */
+ } /* for */
+ __PHYSFS_platformReleaseMutex(stateLock);
+ } /* if */
+
+ __PHYSFS_smallFree(fname);
+} /* PHYSFS_enumerateFilesCallback */
+
+
+int PHYSFS_exists(const char *fname)
+{
+ return (PHYSFS_getRealDir(fname) != NULL);
+} /* PHYSFS_exists */
+
+
+PHYSFS_sint64 PHYSFS_getLastModTime(const char *fname)
+{
+ PHYSFS_Stat statbuf;
+ BAIL_IF_MACRO(!PHYSFS_stat(fname, &statbuf), ERRPASS, -1);
+ return statbuf.modtime;
+} /* PHYSFS_getLastModTime */
+
+
+int PHYSFS_isDirectory(const char *fname)
+{
+ PHYSFS_Stat statbuf;
+ BAIL_IF_MACRO(!PHYSFS_stat(fname, &statbuf), ERRPASS, 0);
+ return (statbuf.filetype == PHYSFS_FILETYPE_DIRECTORY);
+} /* PHYSFS_isDirectory */
+
+
+int PHYSFS_isSymbolicLink(const char *fname)
+{
+ PHYSFS_Stat statbuf;
+ BAIL_IF_MACRO(!PHYSFS_stat(fname, &statbuf), ERRPASS, 0);
+ return (statbuf.filetype == PHYSFS_FILETYPE_SYMLINK);
+} /* PHYSFS_isSymbolicLink */
+
+
+static PHYSFS_File *doOpenWrite(const char *_fname, int appending)
+{
+ FileHandle *fh = NULL;
+ size_t len;
+ char *fname;
+
+ BAIL_IF_MACRO(!_fname, PHYSFS_ERR_INVALID_ARGUMENT, 0);
+ len = strlen(_fname) + 1;
+ fname = (char *) __PHYSFS_smallAlloc(len);
+ BAIL_IF_MACRO(!fname, PHYSFS_ERR_OUT_OF_MEMORY, 0);
+
+ if (sanitizePlatformIndependentPath(_fname, fname))
+ {
+ PHYSFS_Io *io = NULL;
+ DirHandle *h = NULL;
+ const PHYSFS_Archiver *f;
+
+ __PHYSFS_platformGrabMutex(stateLock);
+
+ GOTO_IF_MACRO(!writeDir, PHYSFS_ERR_NO_WRITE_DIR, doOpenWriteEnd);
+
+ h = writeDir;
+ GOTO_IF_MACRO(!verifyPath(h, &fname, 0), ERRPASS, doOpenWriteEnd);
+
+ f = h->funcs;
+ if (appending)
+ io = f->openAppend(h->opaque, fname);
+ else
+ io = f->openWrite(h->opaque, fname);
+
+ GOTO_IF_MACRO(!io, ERRPASS, doOpenWriteEnd);
+
+ fh = (FileHandle *) allocator.Malloc(sizeof (FileHandle));
+ if (fh == NULL)
+ {
+ io->destroy(io);
+ GOTO_MACRO(PHYSFS_ERR_OUT_OF_MEMORY, doOpenWriteEnd);
+ } /* if */
+ else
+ {
+ memset(fh, '\0', sizeof (FileHandle));
+ fh->io = io;
+ fh->dirHandle = h;
+ fh->next = openWriteList;
+ openWriteList = fh;
+ } /* else */
+
+ doOpenWriteEnd:
+ __PHYSFS_platformReleaseMutex(stateLock);
+ } /* if */
+
+ __PHYSFS_smallFree(fname);
+ return ((PHYSFS_File *) fh);
+} /* doOpenWrite */
+
+
+PHYSFS_File *PHYSFS_openWrite(const char *filename)
+{
+ return doOpenWrite(filename, 0);
+} /* PHYSFS_openWrite */
+
+
+PHYSFS_File *PHYSFS_openAppend(const char *filename)
+{
+ return doOpenWrite(filename, 1);
+} /* PHYSFS_openAppend */
+
+
+PHYSFS_File *PHYSFS_openRead(const char *_fname)
+{
+ FileHandle *fh = NULL;
+ char *fname;
+ size_t len;
+
+ BAIL_IF_MACRO(!_fname, PHYSFS_ERR_INVALID_ARGUMENT, 0);
+ len = strlen(_fname) + 1;
+ fname = (char *) __PHYSFS_smallAlloc(len);
+ BAIL_IF_MACRO(!fname, PHYSFS_ERR_OUT_OF_MEMORY, 0);
+
+ if (sanitizePlatformIndependentPath(_fname, fname))
+ {
+ int fileExists = 0;
+ DirHandle *i = NULL;
+ PHYSFS_Io *io = NULL;
+
+ __PHYSFS_platformGrabMutex(stateLock);
+
+ GOTO_IF_MACRO(!searchPath, PHYSFS_ERR_NO_SUCH_PATH, openReadEnd);
+
+ for (i = searchPath; (i != NULL) && (!fileExists); i = i->next)
+ {
+ char *arcfname = fname;
+ if (verifyPath(i, &arcfname, 0))
+ {
+ io = i->funcs->openRead(i->opaque, arcfname, &fileExists);
+ if (io)
+ break;
+ } /* if */
+ } /* for */
+
+ GOTO_IF_MACRO(!io, ERRPASS, openReadEnd);
+
+ fh = (FileHandle *) allocator.Malloc(sizeof (FileHandle));
+ if (fh == NULL)
+ {
+ io->destroy(io);
+ GOTO_MACRO(PHYSFS_ERR_OUT_OF_MEMORY, openReadEnd);
+ } /* if */
+
+ memset(fh, '\0', sizeof (FileHandle));
+ fh->io = io;
+ fh->forReading = 1;
+ fh->dirHandle = i;
+ fh->next = openReadList;
+ openReadList = fh;
+
+ openReadEnd:
+ __PHYSFS_platformReleaseMutex(stateLock);
+ } /* if */
+
+ __PHYSFS_smallFree(fname);
+ return ((PHYSFS_File *) fh);
+} /* PHYSFS_openRead */
+
+
+static int closeHandleInOpenList(FileHandle **list, FileHandle *handle)
+{
+ FileHandle *prev = NULL;
+ FileHandle *i;
+ int rc = 1;
+
+ for (i = *list; i != NULL; i = i->next)
+ {
+ if (i == handle) /* handle is in this list? */
+ {
+ PHYSFS_Io *io = handle->io;
+ PHYSFS_uint8 *tmp = handle->buffer;
+ rc = PHYSFS_flush((PHYSFS_File *) handle);
+ if (!rc)
+ return -1;
+ io->destroy(io);
+
+ if (tmp != NULL) /* free any associated buffer. */
+ allocator.Free(tmp);
+
+ if (prev == NULL)
+ *list = handle->next;
+ else
+ prev->next = handle->next;
+
+ allocator.Free(handle);
+ return 1;
+ } /* if */
+ prev = i;
+ } /* for */
+
+ return 0;
+} /* closeHandleInOpenList */
+
+
+int PHYSFS_close(PHYSFS_File *_handle)
+{
+ FileHandle *handle = (FileHandle *) _handle;
+ int rc;
+
+ __PHYSFS_platformGrabMutex(stateLock);
+
+ /* -1 == close failure. 0 == not found. 1 == success. */
+ rc = closeHandleInOpenList(&openReadList, handle);
+ BAIL_IF_MACRO_MUTEX(rc == -1, ERRPASS, stateLock, 0);
+ if (!rc)
+ {
+ rc = closeHandleInOpenList(&openWriteList, handle);
+ BAIL_IF_MACRO_MUTEX(rc == -1, ERRPASS, stateLock, 0);
+ } /* if */
+
+ __PHYSFS_platformReleaseMutex(stateLock);
+ BAIL_IF_MACRO(!rc, PHYSFS_ERR_INVALID_ARGUMENT, 0);
+ return 1;
+} /* PHYSFS_close */
+
+
+static PHYSFS_sint64 doBufferedRead(FileHandle *fh, void *buffer,
+ PHYSFS_uint64 len)
+{
+ PHYSFS_Io *io = NULL;
+ PHYSFS_sint64 retval = 0;
+ PHYSFS_uint32 buffered = 0;
+ PHYSFS_sint64 rc = 0;
+
+ if (len == 0)
+ return 0;
+
+ buffered = fh->buffill - fh->bufpos;
+ if (buffered >= len) /* totally in the buffer, just copy and return! */
+ {
+ memcpy(buffer, fh->buffer + fh->bufpos, (size_t) len);
+ fh->bufpos += (PHYSFS_uint32) len;
+ return (PHYSFS_sint64) len;
+ } /* else if */
+
+ if (buffered > 0) /* partially in the buffer... */
+ {
+ memcpy(buffer, fh->buffer + fh->bufpos, (size_t) buffered);
+ buffer = ((PHYSFS_uint8 *) buffer) + buffered;
+ len -= buffered;
+ retval = buffered;
+ fh->buffill = fh->bufpos = 0;
+ } /* if */
+
+ /* if you got here, the buffer is drained and we still need bytes. */
+ assert(len > 0);
+
+ io = fh->io;
+ if (len >= fh->bufsize) /* need more than the buffer takes. */
+ {
+ /* leave buffer empty, go right to output instead. */
+ rc = io->read(io, buffer, len);
+ if (rc < 0)
+ return ((retval == 0) ? rc : retval);
+ return retval + rc;
+ } /* if */
+
+ /* need less than buffer can take. Fill buffer. */
+ rc = io->read(io, fh->buffer, fh->bufsize);
+ if (rc < 0)
+ return ((retval == 0) ? rc : retval);
+
+ assert(fh->bufpos == 0);
+ fh->buffill = (PHYSFS_uint32) rc;
+ rc = doBufferedRead(fh, buffer, len); /* go from the start, again. */
+ if (rc < 0)
+ return ((retval == 0) ? rc : retval);
+
+ return retval + rc;
+} /* doBufferedRead */
+
+
+PHYSFS_sint64 PHYSFS_read(PHYSFS_File *handle, void *buffer,
+ PHYSFS_uint32 size, PHYSFS_uint32 count)
+{
+ const PHYSFS_uint64 len = ((PHYSFS_uint64) size) * ((PHYSFS_uint64) count);
+ const PHYSFS_sint64 retval = PHYSFS_readBytes(handle, buffer, len);
+ return ( (retval <= 0) ? retval : (retval / ((PHYSFS_sint64) size)) );
+} /* PHYSFS_read */
+
+
+PHYSFS_sint64 PHYSFS_readBytes(PHYSFS_File *handle, void *buffer,
+ PHYSFS_uint64 len)
+{
+ FileHandle *fh = (FileHandle *) handle;
+
+#ifdef PHYSFS_NO_64BIT_SUPPORT
+ const PHYSFS_uint64 maxlen = __PHYSFS_UI64(0x7FFFFFFF);
+#else
+ const PHYSFS_uint64 maxlen = __PHYSFS_UI64(0x7FFFFFFFFFFFFFFF);
+#endif
+
+ if (!__PHYSFS_ui64FitsAddressSpace(len))
+ BAIL_MACRO(PHYSFS_ERR_INVALID_ARGUMENT, -1);
+
+ BAIL_IF_MACRO(len > maxlen, PHYSFS_ERR_INVALID_ARGUMENT, -1);
+ BAIL_IF_MACRO(!fh->forReading, PHYSFS_ERR_OPEN_FOR_WRITING, -1);
+ BAIL_IF_MACRO(len == 0, ERRPASS, 0);
+ if (fh->buffer)
+ return doBufferedRead(fh, buffer, len);
+
+ return fh->io->read(fh->io, buffer, len);
+} /* PHYSFS_readBytes */
+
+
+static PHYSFS_sint64 doBufferedWrite(PHYSFS_File *handle, const void *buffer,
+ PHYSFS_uint64 len)
+{
+ FileHandle *fh = (FileHandle *) handle;
+
+ /* whole thing fits in the buffer? */
+ if ( (((PHYSFS_uint64) fh->buffill) + len) < fh->bufsize )
+ {
+ memcpy(fh->buffer + fh->buffill, buffer, (size_t) len);
+ fh->buffill += (PHYSFS_uint32) len;
+ return (PHYSFS_sint64) len;
+ } /* if */
+
+ /* would overflow buffer. Flush and then write the new objects, too. */
+ BAIL_IF_MACRO(!PHYSFS_flush(handle), ERRPASS, -1);
+ return fh->io->write(fh->io, buffer, len);
+} /* doBufferedWrite */
+
+
+PHYSFS_sint64 PHYSFS_write(PHYSFS_File *handle, const void *buffer,
+ PHYSFS_uint32 size, PHYSFS_uint32 count)
+{
+ const PHYSFS_uint64 len = ((PHYSFS_uint64) size) * ((PHYSFS_uint64) count);
+ const PHYSFS_sint64 retval = PHYSFS_writeBytes(handle, buffer, len);
+ return ( (retval <= 0) ? retval : (retval / ((PHYSFS_sint64) size)) );
+} /* PHYSFS_write */
+
+
+PHYSFS_sint64 PHYSFS_writeBytes(PHYSFS_File *handle, const void *buffer,
+ PHYSFS_uint64 len)
+{
+ FileHandle *fh = (FileHandle *) handle;
+
+#ifdef PHYSFS_NO_64BIT_SUPPORT
+ const PHYSFS_uint64 maxlen = __PHYSFS_UI64(0x7FFFFFFF);
+#else
+ const PHYSFS_uint64 maxlen = __PHYSFS_UI64(0x7FFFFFFFFFFFFFFF);
+#endif
+
+ if (!__PHYSFS_ui64FitsAddressSpace(len))
+ BAIL_MACRO(PHYSFS_ERR_INVALID_ARGUMENT, -1);
+
+ BAIL_IF_MACRO(len > maxlen, PHYSFS_ERR_INVALID_ARGUMENT, -1);
+ BAIL_IF_MACRO(fh->forReading, PHYSFS_ERR_OPEN_FOR_READING, -1);
+ BAIL_IF_MACRO(len == 0, ERRPASS, 0);
+ if (fh->buffer)
+ return doBufferedWrite(handle, buffer, len);
+
+ return fh->io->write(fh->io, buffer, len);
+} /* PHYSFS_write */
+
+
+int PHYSFS_eof(PHYSFS_File *handle)
+{
+ FileHandle *fh = (FileHandle *) handle;
+
+ if (!fh->forReading) /* never EOF on files opened for write/append. */
+ return 0;
+
+ /* can't be eof if buffer isn't empty */
+ if (fh->bufpos == fh->buffill)
+ {
+ /* check the Io. */
+ PHYSFS_Io *io = fh->io;
+ const PHYSFS_sint64 pos = io->tell(io);
+ const PHYSFS_sint64 len = io->length(io);
+ if ((pos < 0) || (len < 0))
+ return 0; /* beats me. */
+ return (pos >= len);
+ } /* if */
+
+ return 0;
+} /* PHYSFS_eof */
+
+
+PHYSFS_sint64 PHYSFS_tell(PHYSFS_File *handle)
+{
+ FileHandle *fh = (FileHandle *) handle;
+ const PHYSFS_sint64 pos = fh->io->tell(fh->io);
+ const PHYSFS_sint64 retval = fh->forReading ?
+ (pos - fh->buffill) + fh->bufpos :
+ (pos + fh->buffill);
+ return retval;
+} /* PHYSFS_tell */
+
+
+int PHYSFS_seek(PHYSFS_File *handle, PHYSFS_uint64 pos)
+{
+ FileHandle *fh = (FileHandle *) handle;
+ BAIL_IF_MACRO(!PHYSFS_flush(handle), ERRPASS, 0);
+
+ if (fh->buffer && fh->forReading)
+ {
+ /* avoid throwing away our precious buffer if seeking within it. */
+ PHYSFS_sint64 offset = pos - PHYSFS_tell(handle);
+ if ( /* seeking within the already-buffered range? */
+ ((offset >= 0) && (offset <= fh->buffill - fh->bufpos)) /* fwd */
+ || ((offset < 0) && (-offset <= fh->bufpos)) /* backward */ )
+ {
+ fh->bufpos += (PHYSFS_uint32) offset;
+ return 1; /* successful seek */
+ } /* if */
+ } /* if */
+
+ /* we have to fall back to a 'raw' seek. */
+ fh->buffill = fh->bufpos = 0;
+ return fh->io->seek(fh->io, pos);
+} /* PHYSFS_seek */
+
+
+PHYSFS_sint64 PHYSFS_fileLength(PHYSFS_File *handle)
+{
+ PHYSFS_Io *io = ((FileHandle *) handle)->io;
+ return io->length(io);
+} /* PHYSFS_filelength */
+
+
+int PHYSFS_setBuffer(PHYSFS_File *handle, PHYSFS_uint64 _bufsize)
+{
+ FileHandle *fh = (FileHandle *) handle;
+ PHYSFS_uint32 bufsize;
+
+ /* !!! FIXME: actually, why use 32 bits here? */
+ /*BAIL_IF_MACRO(_bufsize > 0xFFFFFFFF, "buffer must fit in 32-bits", 0);*/
+ BAIL_IF_MACRO(_bufsize > 0xFFFFFFFF, PHYSFS_ERR_INVALID_ARGUMENT, 0);
+ bufsize = (PHYSFS_uint32) _bufsize;
+
+ BAIL_IF_MACRO(!PHYSFS_flush(handle), ERRPASS, 0);
+
+ /*
+ * For reads, we need to move the file pointer to where it would be
+ * if we weren't buffering, so that the next read will get the
+ * right chunk of stuff from the file. PHYSFS_flush() handles writes.
+ */
+ if ((fh->forReading) && (fh->buffill != fh->bufpos))
+ {
+ PHYSFS_uint64 pos;
+ const PHYSFS_sint64 curpos = fh->io->tell(fh->io);
+ BAIL_IF_MACRO(curpos == -1, ERRPASS, 0);
+ pos = ((curpos - fh->buffill) + fh->bufpos);
+ BAIL_IF_MACRO(!fh->io->seek(fh->io, pos), ERRPASS, 0);
+ } /* if */
+
+ if (bufsize == 0) /* delete existing buffer. */
+ {
+ if (fh->buffer)
+ {
+ allocator.Free(fh->buffer);
+ fh->buffer = NULL;
+ } /* if */
+ } /* if */
+
+ else
+ {
+ PHYSFS_uint8 *newbuf;
+ newbuf = (PHYSFS_uint8 *) allocator.Realloc(fh->buffer, bufsize);
+ BAIL_IF_MACRO(!newbuf, PHYSFS_ERR_OUT_OF_MEMORY, 0);
+ fh->buffer = newbuf;
+ } /* else */
+
+ fh->bufsize = bufsize;
+ fh->buffill = fh->bufpos = 0;
+ return 1;
+} /* PHYSFS_setBuffer */
+
+
+int PHYSFS_flush(PHYSFS_File *handle)
+{
+ FileHandle *fh = (FileHandle *) handle;
+ PHYSFS_Io *io;
+ PHYSFS_sint64 rc;
+
+ if ((fh->forReading) || (fh->bufpos == fh->buffill))
+ return 1; /* open for read or buffer empty are successful no-ops. */
+
+ /* dump buffer to disk. */
+ io = fh->io;
+ rc = io->write(io, fh->buffer + fh->bufpos, fh->buffill - fh->bufpos);
+ BAIL_IF_MACRO(rc <= 0, ERRPASS, 0);
+ fh->bufpos = fh->buffill = 0;
+ return io->flush(io);
+} /* PHYSFS_flush */
+
+
+int PHYSFS_stat(const char *_fname, PHYSFS_Stat *stat)
+{
+ int retval = 0;
+ char *fname;
+ size_t len;
+
+ BAIL_IF_MACRO(!_fname, PHYSFS_ERR_INVALID_ARGUMENT, -1);
+ BAIL_IF_MACRO(!stat, PHYSFS_ERR_INVALID_ARGUMENT, -1);
+ len = strlen(_fname) + 1;
+ fname = (char *) __PHYSFS_smallAlloc(len);
+ BAIL_IF_MACRO(!fname, PHYSFS_ERR_OUT_OF_MEMORY, -1);
+
+ /* set some sane defaults... */
+ stat->filesize = -1;
+ stat->modtime = -1;
+ stat->createtime = -1;
+ stat->accesstime = -1;
+ stat->filetype = PHYSFS_FILETYPE_OTHER;
+ stat->readonly = 1; /* !!! FIXME */
+
+ if (sanitizePlatformIndependentPath(_fname, fname))
+ {
+ if (*fname == '\0')
+ {
+ stat->filetype = PHYSFS_FILETYPE_DIRECTORY;
+ stat->readonly = !writeDir; /* Writeable if we have a writeDir */
+ retval = 1;
+ } /* if */
+ else
+ {
+ DirHandle *i;
+ int exists = 0;
+ __PHYSFS_platformGrabMutex(stateLock);
+ for (i = searchPath; ((i != NULL) && (!exists)); i = i->next)
+ {
+ char *arcfname = fname;
+ exists = partOfMountPoint(i, arcfname);
+ if (exists)
+ {
+ stat->filetype = PHYSFS_FILETYPE_DIRECTORY;
+ stat->readonly = 1; /* !!! FIXME */
+ retval = 1;
+ } /* if */
+ else if (verifyPath(i, &arcfname, 0))
+ {
+ /* !!! FIXME: this test is wrong and should be elsewhere. */
+ stat->readonly = !(writeDir &&
+ (strcmp(writeDir->dirName, i->dirName) == 0));
+ retval = i->funcs->stat(i->opaque, arcfname, &exists, stat);
+ } /* else if */
+ } /* for */
+ __PHYSFS_platformReleaseMutex(stateLock);
+ } /* else */
+ } /* if */
+
+ __PHYSFS_smallFree(fname);
+ return retval;
+} /* PHYSFS_stat */
+
+
+int __PHYSFS_readAll(PHYSFS_Io *io, void *buf, const PHYSFS_uint64 len)
+{
+ return (io->read(io, buf, len) == len);
+} /* __PHYSFS_readAll */
+
+
+void *__PHYSFS_initSmallAlloc(void *ptr, PHYSFS_uint64 len)
+{
+ void *useHeap = ((ptr == NULL) ? ((void *) 1) : ((void *) 0));
+ if (useHeap) /* too large for stack allocation or alloca() failed. */
+ ptr = allocator.Malloc(len+sizeof (void *));
+
+ if (ptr != NULL)
+ {
+ void **retval = (void **) ptr;
+ /*printf("%s alloc'd (%d) bytes at (%p).\n",
+ useHeap ? "heap" : "stack", (int) len, ptr);*/
+ *retval = useHeap;
+ return retval + 1;
+ } /* if */
+
+ return NULL; /* allocation failed. */
+} /* __PHYSFS_initSmallAlloc */
+
+
+void __PHYSFS_smallFree(void *ptr)
+{
+ if (ptr != NULL)
+ {
+ void **block = ((void **) ptr) - 1;
+ const int useHeap = (*block != 0);
+ if (useHeap)
+ allocator.Free(block);
+ /*printf("%s free'd (%p).\n", useHeap ? "heap" : "stack", block);*/
+ } /* if */
+} /* __PHYSFS_smallFree */
+
+
+int PHYSFS_setAllocator(const PHYSFS_Allocator *a)
+{
+ BAIL_IF_MACRO(initialized, PHYSFS_ERR_IS_INITIALIZED, 0);
+ externalAllocator = (a != NULL);
+ if (externalAllocator)
+ memcpy(&allocator, a, sizeof (PHYSFS_Allocator));
+
+ return 1;
+} /* PHYSFS_setAllocator */
+
+
+const PHYSFS_Allocator *PHYSFS_getAllocator(void)
+{
+ BAIL_IF_MACRO(!initialized, PHYSFS_ERR_NOT_INITIALIZED, NULL);
+ return &allocator;
+} /* PHYSFS_getAllocator */
+
+
+static void *mallocAllocatorMalloc(PHYSFS_uint64 s)
+{
+ if (!__PHYSFS_ui64FitsAddressSpace(s))
+ BAIL_MACRO(PHYSFS_ERR_OUT_OF_MEMORY, NULL);
+ #undef malloc
+ return malloc((size_t) s);
+} /* mallocAllocatorMalloc */
+
+
+static void *mallocAllocatorRealloc(void *ptr, PHYSFS_uint64 s)
+{
+ if (!__PHYSFS_ui64FitsAddressSpace(s))
+ BAIL_MACRO(PHYSFS_ERR_OUT_OF_MEMORY, NULL);
+ #undef realloc
+ return realloc(ptr, (size_t) s);
+} /* mallocAllocatorRealloc */
+
+
+static void mallocAllocatorFree(void *ptr)
+{
+ #undef free
+ free(ptr);
+} /* mallocAllocatorFree */
+
+
+static void setDefaultAllocator(void)
+{
+ assert(!externalAllocator);
+ if (!__PHYSFS_platformSetDefaultAllocator(&allocator))
+ {
+ allocator.Init = NULL;
+ allocator.Deinit = NULL;
+ allocator.Malloc = mallocAllocatorMalloc;
+ allocator.Realloc = mallocAllocatorRealloc;
+ allocator.Free = mallocAllocatorFree;
+ } /* if */
+} /* setDefaultAllocator */
+
+/* end of physfs.c ... */
+