--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/misc/physfs/src/archiver_lzma.c Sat Oct 20 00:20:39 2012 +0400
@@ -0,0 +1,701 @@
+/*
+ * LZMA support routines for PhysicsFS.
+ *
+ * Please see the file lzma.txt in the lzma/ directory.
+ *
+ * This file was written by Dennis Schridde, with some peeking at "7zMain.c"
+ * by Igor Pavlov.
+ */
+
+#define __PHYSICSFS_INTERNAL__
+#include "physfs_internal.h"
+
+#if PHYSFS_SUPPORTS_7Z
+
+#include "lzma/C/7zCrc.h"
+#include "lzma/C/Archive/7z/7zIn.h"
+#include "lzma/C/Archive/7z/7zExtract.h"
+
+
+/* 7z internal from 7zIn.c */
+extern int TestSignatureCandidate(Byte *testBytes);
+
+
+#ifdef _LZMA_IN_CB
+# define BUFFER_SIZE (1 << 12)
+#endif /* _LZMA_IN_CB */
+
+
+/*
+ * Carries filestream metadata through 7z
+ */
+typedef struct _FileInputStream
+{
+ ISzAlloc allocImp; /* Allocation implementation, used by 7z */
+ ISzAlloc allocTempImp; /* Temporary allocation implementation, used by 7z */
+ ISzInStream inStream; /* Input stream with read callbacks, used by 7z */
+ PHYSFS_Io *io; /* Filehandle, used by read implementation */
+#ifdef _LZMA_IN_CB
+ Byte buffer[BUFFER_SIZE]; /* Buffer, used by read implementation */
+#endif /* _LZMA_IN_CB */
+} FileInputStream;
+
+/*
+ * In the 7z format archives are splited into blocks, those are called folders
+ * Set by LZMA_read()
+*/
+typedef struct _LZMAfolder
+{
+ PHYSFS_uint32 index; /* Index of folder in archive */
+ PHYSFS_uint32 references; /* Number of files using this block */
+ PHYSFS_uint8 *cache; /* Cached folder */
+ size_t size; /* Size of folder */
+} LZMAfolder;
+
+/*
+ * Set by LZMA_openArchive(), except folder which gets it's values
+ * in LZMA_read()
+ */
+typedef struct _LZMAarchive
+{
+ struct _LZMAfile *files; /* Array of files, size == archive->db.Database.NumFiles */
+ LZMAfolder *folders; /* Array of folders, size == archive->db.Database.NumFolders */
+ CArchiveDatabaseEx db; /* For 7z: Database */
+ FileInputStream stream; /* For 7z: Input file incl. read and seek callbacks */
+} LZMAarchive;
+
+/* Set by LZMA_openArchive(), except offset which is set by LZMA_read() */
+typedef struct _LZMAfile
+{
+ PHYSFS_uint32 index; /* Index of file in archive */
+ LZMAarchive *archive; /* Link to corresponding archive */
+ LZMAfolder *folder; /* Link to corresponding folder */
+ CFileItem *item; /* For 7z: File info, eg. name, size */
+ size_t offset; /* Offset in folder */
+ size_t position; /* Current "virtual" position in file */
+} LZMAfile;
+
+
+/* Memory management implementations to be passed to 7z */
+
+static void *SzAllocPhysicsFS(size_t size)
+{
+ return ((size == 0) ? NULL : allocator.Malloc(size));
+} /* SzAllocPhysicsFS */
+
+
+static void SzFreePhysicsFS(void *address)
+{
+ if (address != NULL)
+ allocator.Free(address);
+} /* SzFreePhysicsFS */
+
+
+/* Filesystem implementations to be passed to 7z */
+
+#ifdef _LZMA_IN_CB
+
+/*
+ * Read implementation, to be passed to 7z
+ * WARNING: If the ISzInStream in 'object' is not contained in a valid FileInputStream this _will_ break horribly!
+ */
+SZ_RESULT SzFileReadImp(void *object, void **buffer, size_t maxReqSize,
+ size_t *processedSize)
+{
+ FileInputStream *s = (FileInputStream *)(object - offsetof(FileInputStream, inStream)); /* HACK! */
+ PHYSFS_sint64 processedSizeLoc = 0;
+
+ if (maxReqSize > BUFFER_SIZE)
+ maxReqSize = BUFFER_SIZE;
+ processedSizeLoc = s->io->read(s->io, s->buffer, maxReqSize);
+ *buffer = s->buffer;
+ if (processedSize != NULL)
+ *processedSize = (size_t) processedSizeLoc;
+
+ return SZ_OK;
+} /* SzFileReadImp */
+
+#else
+
+/*
+ * Read implementation, to be passed to 7z
+ * WARNING: If the ISzInStream in 'object' is not contained in a valid FileInputStream this _will_ break horribly!
+ */
+SZ_RESULT SzFileReadImp(void *object, void *buffer, size_t size,
+ size_t *processedSize)
+{
+ FileInputStream *s = (FileInputStream *)((unsigned long)object - offsetof(FileInputStream, inStream)); /* HACK! */
+ const size_t processedSizeLoc = s->io->read(s->io, buffer, size);
+ if (processedSize != NULL)
+ *processedSize = processedSizeLoc;
+ return SZ_OK;
+} /* SzFileReadImp */
+
+#endif
+
+/*
+ * Seek implementation, to be passed to 7z
+ * WARNING: If the ISzInStream in 'object' is not contained in a valid FileInputStream this _will_ break horribly!
+ */
+SZ_RESULT SzFileSeekImp(void *object, CFileSize pos)
+{
+ FileInputStream *s = (FileInputStream *)((unsigned long)object - offsetof(FileInputStream, inStream)); /* HACK! */
+ if (s->io->seek(s->io, (PHYSFS_uint64) pos))
+ return SZ_OK;
+ return SZE_FAIL;
+} /* SzFileSeekImp */
+
+
+/*
+ * Translate Microsoft FILETIME (used by 7zip) into UNIX timestamp
+ */
+static PHYSFS_sint64 lzma_filetime_to_unix_timestamp(CArchiveFileTime *ft)
+{
+ /* MS counts in nanoseconds ... */
+ const PHYSFS_uint64 FILETIME_NANOTICKS_PER_SECOND = __PHYSFS_UI64(10000000);
+ /* MS likes to count seconds since 01.01.1601 ... */
+ const PHYSFS_uint64 FILETIME_UNIX_DIFF = __PHYSFS_UI64(11644473600);
+
+ PHYSFS_uint64 filetime = ft->Low | ((PHYSFS_uint64)ft->High << 32);
+ return filetime/FILETIME_NANOTICKS_PER_SECOND - FILETIME_UNIX_DIFF;
+} /* lzma_filetime_to_unix_timestamp */
+
+
+/*
+ * Compare a file with a given name, C89 stdlib variant
+ * Used for sorting
+ */
+static int lzma_file_cmp_stdlib(const void *key, const void *object)
+{
+ const char *name = (const char *) key;
+ LZMAfile *file = (LZMAfile *) object;
+ return strcmp(name, file->item->Name);
+} /* lzma_file_cmp_posix */
+
+
+/*
+ * Compare two files with each other based on the name
+ * Used for sorting
+ */
+static int lzma_file_cmp(void *_a, size_t one, size_t two)
+{
+ LZMAfile *files = (LZMAfile *) _a;
+ return strcmp(files[one].item->Name, files[two].item->Name);
+} /* lzma_file_cmp */
+
+
+/*
+ * Swap two entries in the file array
+ */
+static void lzma_file_swap(void *_a, size_t one, size_t two)
+{
+ LZMAfile tmp;
+ LZMAfile *first = &(((LZMAfile *) _a)[one]);
+ LZMAfile *second = &(((LZMAfile *) _a)[two]);
+ memcpy(&tmp, first, sizeof (LZMAfile));
+ memcpy(first, second, sizeof (LZMAfile));
+ memcpy(second, &tmp, sizeof (LZMAfile));
+} /* lzma_file_swap */
+
+
+/*
+ * Find entry 'name' in 'archive'
+ */
+static LZMAfile * lzma_find_file(const LZMAarchive *archive, const char *name)
+{
+ LZMAfile *file = bsearch(name, archive->files, archive->db.Database.NumFiles, sizeof(*archive->files), lzma_file_cmp_stdlib); /* FIXME: Should become __PHYSFS_search!!! */
+
+ BAIL_IF_MACRO(file == NULL, PHYSFS_ERR_NO_SUCH_PATH, NULL);
+
+ return file;
+} /* lzma_find_file */
+
+
+/*
+ * Load metadata for the file at given index
+ */
+static int lzma_file_init(LZMAarchive *archive, PHYSFS_uint32 fileIndex)
+{
+ LZMAfile *file = &archive->files[fileIndex];
+ PHYSFS_uint32 folderIndex = archive->db.FileIndexToFolderIndexMap[fileIndex];
+
+ file->index = fileIndex; /* Store index into 7z array, since we sort our own. */
+ file->archive = archive;
+ file->folder = (folderIndex != (PHYSFS_uint32)-1 ? &archive->folders[folderIndex] : NULL); /* Directories don't have a folder (they contain no own data...) */
+ file->item = &archive->db.Database.Files[fileIndex]; /* Holds crucial data and is often referenced -> Store link */
+ file->position = 0;
+ file->offset = 0; /* Offset will be set by LZMA_read() */
+
+ return 1;
+} /* lzma_load_file */
+
+
+/*
+ * Load metadata for all files
+ */
+static int lzma_files_init(LZMAarchive *archive)
+{
+ PHYSFS_uint32 fileIndex = 0, numFiles = archive->db.Database.NumFiles;
+
+ for (fileIndex = 0; fileIndex < numFiles; fileIndex++ )
+ {
+ if (!lzma_file_init(archive, fileIndex))
+ {
+ return 0; /* FALSE on failure */
+ }
+ } /* for */
+
+ __PHYSFS_sort(archive->files, (size_t) numFiles, lzma_file_cmp, lzma_file_swap);
+
+ return 1;
+} /* lzma_load_files */
+
+
+/*
+ * Initialise specified archive
+ */
+static void lzma_archive_init(LZMAarchive *archive)
+{
+ memset(archive, 0, sizeof(*archive));
+
+ /* Prepare callbacks for 7z */
+ archive->stream.inStream.Read = SzFileReadImp;
+ archive->stream.inStream.Seek = SzFileSeekImp;
+
+ archive->stream.allocImp.Alloc = SzAllocPhysicsFS;
+ archive->stream.allocImp.Free = SzFreePhysicsFS;
+
+ archive->stream.allocTempImp.Alloc = SzAllocPhysicsFS;
+ archive->stream.allocTempImp.Free = SzFreePhysicsFS;
+}
+
+
+/*
+ * Deinitialise archive
+ */
+static void lzma_archive_exit(LZMAarchive *archive)
+{
+ /* Free arrays */
+ allocator.Free(archive->folders);
+ allocator.Free(archive->files);
+ allocator.Free(archive);
+}
+
+/*
+ * Wrap all 7z calls in this, so the physfs error state is set appropriately.
+ */
+static int lzma_err(SZ_RESULT rc)
+{
+ switch (rc)
+ {
+ case SZ_OK: /* Same as LZMA_RESULT_OK */
+ break;
+ case SZE_DATA_ERROR: /* Same as LZMA_RESULT_DATA_ERROR */
+ __PHYSFS_setError(PHYSFS_ERR_CORRUPT); /*!!!FIXME: was "PHYSFS_ERR_DATA_ERROR" */
+ break;
+ case SZE_OUTOFMEMORY:
+ __PHYSFS_setError(PHYSFS_ERR_OUT_OF_MEMORY);
+ break;
+ case SZE_CRC_ERROR:
+ __PHYSFS_setError(PHYSFS_ERR_CORRUPT);
+ break;
+ case SZE_NOTIMPL:
+ __PHYSFS_setError(PHYSFS_ERR_UNSUPPORTED);
+ break;
+ case SZE_FAIL:
+ __PHYSFS_setError(PHYSFS_ERR_OTHER_ERROR); /* !!! FIXME: right? */
+ break;
+ case SZE_ARCHIVE_ERROR:
+ __PHYSFS_setError(PHYSFS_ERR_CORRUPT); /* !!! FIXME: right? */
+ break;
+ default:
+ __PHYSFS_setError(PHYSFS_ERR_OTHER_ERROR);
+ } /* switch */
+
+ return rc;
+} /* lzma_err */
+
+
+static PHYSFS_sint64 LZMA_read(PHYSFS_Io *io, void *outBuf, PHYSFS_uint64 len)
+{
+ LZMAfile *file = (LZMAfile *) io->opaque;
+
+ size_t wantedSize = (size_t) len;
+ const size_t remainingSize = file->item->Size - file->position;
+ size_t fileSize = 0;
+
+ BAIL_IF_MACRO(wantedSize == 0, ERRPASS, 0); /* quick rejection. */
+ BAIL_IF_MACRO(remainingSize == 0, PHYSFS_ERR_PAST_EOF, 0);
+
+ if (wantedSize > remainingSize)
+ wantedSize = remainingSize;
+
+ /* Only decompress the folder if it is not already cached */
+ if (file->folder->cache == NULL)
+ {
+ const int rc = lzma_err(SzExtract(
+ &file->archive->stream.inStream, /* compressed data */
+ &file->archive->db, /* 7z's database, containing everything */
+ file->index, /* Index into database arrays */
+ /* Index of cached folder, will be changed by SzExtract */
+ &file->folder->index,
+ /* Cache for decompressed folder, allocated/freed by SzExtract */
+ &file->folder->cache,
+ /* Size of cache, will be changed by SzExtract */
+ &file->folder->size,
+ /* Offset of this file inside the cache, set by SzExtract */
+ &file->offset,
+ &fileSize, /* Size of this file */
+ &file->archive->stream.allocImp,
+ &file->archive->stream.allocTempImp));
+
+ if (rc != SZ_OK)
+ return -1;
+ } /* if */
+
+ /* Copy wanted bytes over from cache to outBuf */
+ memcpy(outBuf, (file->folder->cache + file->offset + file->position),
+ wantedSize);
+ file->position += wantedSize; /* Increase virtual position */
+
+ return wantedSize;
+} /* LZMA_read */
+
+
+static PHYSFS_sint64 LZMA_write(PHYSFS_Io *io, const void *b, PHYSFS_uint64 len)
+{
+ BAIL_MACRO(PHYSFS_ERR_READ_ONLY, -1);
+} /* LZMA_write */
+
+
+static PHYSFS_sint64 LZMA_tell(PHYSFS_Io *io)
+{
+ LZMAfile *file = (LZMAfile *) io->opaque;
+ return file->position;
+} /* LZMA_tell */
+
+
+static int LZMA_seek(PHYSFS_Io *io, PHYSFS_uint64 offset)
+{
+ LZMAfile *file = (LZMAfile *) io->opaque;
+
+ BAIL_IF_MACRO(offset > file->item->Size, PHYSFS_ERR_PAST_EOF, 0);
+
+ file->position = offset; /* We only use a virtual position... */
+
+ return 1;
+} /* LZMA_seek */
+
+
+static PHYSFS_sint64 LZMA_length(PHYSFS_Io *io)
+{
+ const LZMAfile *file = (LZMAfile *) io->opaque;
+ return (file->item->Size);
+} /* LZMA_length */
+
+
+static PHYSFS_Io *LZMA_duplicate(PHYSFS_Io *_io)
+{
+ /* !!! FIXME: this archiver needs to be reworked to allow multiple
+ * !!! FIXME: opens before we worry about duplication. */
+ BAIL_MACRO(PHYSFS_ERR_UNSUPPORTED, NULL);
+} /* LZMA_duplicate */
+
+
+static int LZMA_flush(PHYSFS_Io *io) { return 1; /* no write support. */ }
+
+
+static void LZMA_destroy(PHYSFS_Io *io)
+{
+ LZMAfile *file = (LZMAfile *) io->opaque;
+
+ if (file->folder != NULL)
+ {
+ /* Only decrease refcount if someone actually requested this file... Prevents from overflows and close-on-open... */
+ if (file->folder->references > 0)
+ file->folder->references--;
+ if (file->folder->references == 0)
+ {
+ /* Free the cache which might have been allocated by LZMA_read() */
+ allocator.Free(file->folder->cache);
+ file->folder->cache = NULL;
+ }
+ /* !!! FIXME: we don't free (file) or (file->folder)?! */
+ } /* if */
+} /* LZMA_destroy */
+
+
+static const PHYSFS_Io LZMA_Io =
+{
+ CURRENT_PHYSFS_IO_API_VERSION, NULL,
+ LZMA_read,
+ LZMA_write,
+ LZMA_seek,
+ LZMA_tell,
+ LZMA_length,
+ LZMA_duplicate,
+ LZMA_flush,
+ LZMA_destroy
+};
+
+
+static void *LZMA_openArchive(PHYSFS_Io *io, const char *name, int forWriting)
+{
+ PHYSFS_uint8 sig[k7zSignatureSize];
+ size_t len = 0;
+ LZMAarchive *archive = NULL;
+
+ assert(io != NULL); /* shouldn't ever happen. */
+
+ BAIL_IF_MACRO(forWriting, PHYSFS_ERR_READ_ONLY, NULL);
+
+ if (io->read(io, sig, k7zSignatureSize) != k7zSignatureSize)
+ return 0;
+ BAIL_IF_MACRO(!TestSignatureCandidate(sig), PHYSFS_ERR_UNSUPPORTED, NULL);
+ BAIL_IF_MACRO(!io->seek(io, 0), ERRPASS, NULL);
+
+ archive = (LZMAarchive *) allocator.Malloc(sizeof (LZMAarchive));
+ BAIL_IF_MACRO(archive == NULL, PHYSFS_ERR_OUT_OF_MEMORY, NULL);
+
+ lzma_archive_init(archive);
+ archive->stream.io = io;
+
+ CrcGenerateTable();
+ SzArDbExInit(&archive->db);
+ if (lzma_err(SzArchiveOpen(&archive->stream.inStream,
+ &archive->db,
+ &archive->stream.allocImp,
+ &archive->stream.allocTempImp)) != SZ_OK)
+ {
+ SzArDbExFree(&archive->db, SzFreePhysicsFS);
+ lzma_archive_exit(archive);
+ return NULL; /* Error is set by lzma_err! */
+ } /* if */
+
+ len = archive->db.Database.NumFiles * sizeof (LZMAfile);
+ archive->files = (LZMAfile *) allocator.Malloc(len);
+ if (archive->files == NULL)
+ {
+ SzArDbExFree(&archive->db, SzFreePhysicsFS);
+ lzma_archive_exit(archive);
+ BAIL_MACRO(PHYSFS_ERR_OUT_OF_MEMORY, NULL);
+ }
+
+ /*
+ * Init with 0 so we know when a folder is already cached
+ * Values will be set by LZMA_openRead()
+ */
+ memset(archive->files, 0, len);
+
+ len = archive->db.Database.NumFolders * sizeof (LZMAfolder);
+ archive->folders = (LZMAfolder *) allocator.Malloc(len);
+ if (archive->folders == NULL)
+ {
+ SzArDbExFree(&archive->db, SzFreePhysicsFS);
+ lzma_archive_exit(archive);
+ BAIL_MACRO(PHYSFS_ERR_OUT_OF_MEMORY, NULL);
+ }
+
+ /*
+ * Init with 0 so we know when a folder is already cached
+ * Values will be set by LZMA_read()
+ */
+ memset(archive->folders, 0, len);
+
+ if(!lzma_files_init(archive))
+ {
+ SzArDbExFree(&archive->db, SzFreePhysicsFS);
+ lzma_archive_exit(archive);
+ BAIL_MACRO(PHYSFS_ERR_OTHER_ERROR, NULL);
+ }
+
+ return archive;
+} /* LZMA_openArchive */
+
+
+/*
+ * Moved to seperate function so we can use alloca then immediately throw
+ * away the allocated stack space...
+ */
+static void doEnumCallback(PHYSFS_EnumFilesCallback cb, void *callbackdata,
+ const char *odir, const char *str, size_t flen)
+{
+ char *newstr = __PHYSFS_smallAlloc(flen + 1);
+ if (newstr == NULL)
+ return;
+
+ memcpy(newstr, str, flen);
+ newstr[flen] = '\0';
+ cb(callbackdata, odir, newstr);
+ __PHYSFS_smallFree(newstr);
+} /* doEnumCallback */
+
+
+static void LZMA_enumerateFiles(PHYSFS_Dir *opaque, const char *dname,
+ int omitSymLinks, PHYSFS_EnumFilesCallback cb,
+ const char *origdir, void *callbackdata)
+{
+ size_t dlen = strlen(dname),
+ dlen_inc = dlen + ((dlen > 0) ? 1 : 0);
+ LZMAarchive *archive = (LZMAarchive *) opaque;
+ LZMAfile *file = NULL,
+ *lastFile = &archive->files[archive->db.Database.NumFiles];
+ if (dlen)
+ {
+ file = lzma_find_file(archive, dname);
+ if (file != NULL) /* if 'file' is NULL it should stay so, otherwise errors will not be handled */
+ file += 1;
+ }
+ else
+ {
+ file = archive->files;
+ }
+
+ BAIL_IF_MACRO(file == NULL, PHYSFS_ERR_NO_SUCH_PATH, );
+
+ while (file < lastFile)
+ {
+ const char * fname = file->item->Name;
+ const char * dirNameEnd = fname + dlen_inc;
+
+ if (strncmp(dname, fname, dlen) != 0) /* Stop after mismatch, archive->files is sorted */
+ break;
+
+ if (strchr(dirNameEnd, '/')) /* Skip subdirs */
+ {
+ file++;
+ continue;
+ }
+
+ /* Do the actual callback... */
+ doEnumCallback(cb, callbackdata, origdir, dirNameEnd, strlen(dirNameEnd));
+
+ file++;
+ }
+} /* LZMA_enumerateFiles */
+
+
+static PHYSFS_Io *LZMA_openRead(PHYSFS_Dir *opaque, const char *name,
+ int *fileExists)
+{
+ LZMAarchive *archive = (LZMAarchive *) opaque;
+ LZMAfile *file = lzma_find_file(archive, name);
+ PHYSFS_Io *io = NULL;
+
+ *fileExists = (file != NULL);
+ BAIL_IF_MACRO(file == NULL, PHYSFS_ERR_NO_SUCH_PATH, NULL);
+ BAIL_IF_MACRO(file->folder == NULL, PHYSFS_ERR_NOT_A_FILE, NULL);
+
+ file->position = 0;
+ file->folder->references++; /* Increase refcount for automatic cleanup... */
+
+ io = (PHYSFS_Io *) allocator.Malloc(sizeof (PHYSFS_Io));
+ BAIL_IF_MACRO(io == NULL, PHYSFS_ERR_OUT_OF_MEMORY, NULL);
+ memcpy(io, &LZMA_Io, sizeof (*io));
+ io->opaque = file;
+
+ return io;
+} /* LZMA_openRead */
+
+
+static PHYSFS_Io *LZMA_openWrite(PHYSFS_Dir *opaque, const char *filename)
+{
+ BAIL_MACRO(PHYSFS_ERR_READ_ONLY, NULL);
+} /* LZMA_openWrite */
+
+
+static PHYSFS_Io *LZMA_openAppend(PHYSFS_Dir *opaque, const char *filename)
+{
+ BAIL_MACRO(PHYSFS_ERR_READ_ONLY, NULL);
+} /* LZMA_openAppend */
+
+
+static void LZMA_closeArchive(PHYSFS_Dir *opaque)
+{
+ LZMAarchive *archive = (LZMAarchive *) opaque;
+
+#if 0 /* !!! FIXME: you shouldn't have to do this. */
+ PHYSFS_uint32 fileIndex = 0, numFiles = archive->db.Database.NumFiles;
+ for (fileIndex = 0; fileIndex < numFiles; fileIndex++)
+ {
+ LZMA_fileClose(&archive->files[fileIndex]);
+ } /* for */
+#endif
+
+ SzArDbExFree(&archive->db, SzFreePhysicsFS);
+ archive->stream.io->destroy(archive->stream.io);
+ lzma_archive_exit(archive);
+} /* LZMA_closeArchive */
+
+
+static int LZMA_remove(PHYSFS_Dir *opaque, const char *name)
+{
+ BAIL_MACRO(PHYSFS_ERR_READ_ONLY, 0);
+} /* LZMA_remove */
+
+
+static int LZMA_mkdir(PHYSFS_Dir *opaque, const char *name)
+{
+ BAIL_MACRO(PHYSFS_ERR_READ_ONLY, 0);
+} /* LZMA_mkdir */
+
+static int LZMA_stat(PHYSFS_Dir *opaque, const char *filename,
+ int *exists, PHYSFS_Stat *stat)
+{
+ const LZMAarchive *archive = (const LZMAarchive *) opaque;
+ const LZMAfile *file = lzma_find_file(archive, filename);
+
+ *exists = (file != 0);
+ if (!file)
+ return 0;
+
+ if(file->item->IsDirectory)
+ {
+ stat->filesize = 0;
+ stat->filetype = PHYSFS_FILETYPE_DIRECTORY;
+ } /* if */
+ else
+ {
+ stat->filesize = (PHYSFS_sint64) file->item->Size;
+ stat->filetype = PHYSFS_FILETYPE_REGULAR;
+ } /* else */
+
+ /* !!! FIXME: the 0's should be -1's? */
+ if (file->item->IsLastWriteTimeDefined)
+ stat->modtime = lzma_filetime_to_unix_timestamp(&file->item->LastWriteTime);
+ else
+ stat->modtime = 0;
+
+ /* real create and accesstype are currently not in the lzma SDK */
+ stat->createtime = stat->modtime;
+ stat->accesstime = 0;
+
+ stat->readonly = 1; /* 7zips are always read only */
+
+ return 1;
+} /* LZMA_stat */
+
+
+const PHYSFS_Archiver __PHYSFS_Archiver_LZMA =
+{
+ {
+ "7Z",
+ "LZMA (7zip) format",
+ "Dennis Schridde <devurandom@gmx.net>",
+ "http://icculus.org/physfs/",
+ },
+ LZMA_openArchive, /* openArchive() method */
+ LZMA_enumerateFiles, /* enumerateFiles() method */
+ LZMA_openRead, /* openRead() method */
+ LZMA_openWrite, /* openWrite() method */
+ LZMA_openAppend, /* openAppend() method */
+ LZMA_remove, /* remove() method */
+ LZMA_mkdir, /* mkdir() method */
+ LZMA_closeArchive, /* closeArchive() method */
+ LZMA_stat /* stat() method */
+};
+
+#endif /* defined PHYSFS_SUPPORTS_7Z */
+
+/* end of lzma.c ... */
+