--- /dev/null
+/*
+ * stdio/physfs abstraction layer 2003-04-02
+ *
+ * Adam D. Moss <adam@gimp.org> <aspirin@icculus.org>
+ *
+ * These wrapper macros and functions are designed to allow a program
+ * to perform file I/O with identical semantics and syntax regardless
+ * of whether PhysicsFS is being used or not.
+ */
+#ifndef _ABS_FILE_H
+#define _ABS_FILE_H
+/*
+PLEASE NOTE: This license applies to abs-file.h ONLY (to make it clear that
+you may embed this wrapper code within commercial software); PhysicsFS itself
+is (at the time of writing) released under a different license with
+additional restrictions.
+
+Copyright (C) 2002-2003 Adam D. Moss (the "Author"). All Rights Reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is fur-
+nished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FIT-
+NESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CON-
+NECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of the Author of the
+Software shall not be used in advertising or otherwise to promote the sale,
+use or other dealings in this Software without prior written authorization
+from the Author.
+*/
+
+#include <stdlib.h>
+#include <stdio.h>
+
+/*
+ * API:
+ *
+ * Macro/function use like stdio equivalent...
+ * -------------- ----------------------------
+ * MY_FILETYPE FILE
+ * MY_OPEN_FOR_READ fopen(..., "rb")
+ * MY_READ fread(...)
+ * MY_CLOSE fclose(...)
+ * MY_GETC fgetc(...)
+ * MY_GETS fgets(...)
+ * MY_ATEOF feof(...)
+ * MY_TELL ftell(...)
+ * MY_SEEK fseek(..., SEEK_SET)
+ * MY_REWIND rewind(...)
+ * MY_SETBUFFER (not a standard for stdio, does nothing there)
+ */
+
+/*
+ * Important DEFINEs:
+ * It is important to define these consistantly across the various
+ * compilation modules of your program if you wish to exchange file
+ * handles between them.
+ *
+ * USE_PHYSFS: Define USE_PHYSFS if PhysicsFS is being used; note that if
+ * you do intend to use PhysicsFS then you will still need to initialize
+ * PhysicsFS yourself and set up its search-paths.
+ *
+ * Optional DEFINEs:
+ *
+ * PHYSFS_DEFAULT_READ_BUFFER <bytes>: If set then abs-file.h sets the
+ * PhysicsFS buffer size to this value whenever you open a file. You
+ * may over-ride this on a per-filehandle basis by using the
+ * MY_SETBUFFER() macro (which simply does nothing when not using
+ * PhysicsFS). If you have not defined this value explicitly then
+ * abs-file.h will default to the same default buffer size as used by
+ * stdio if it can be determined, or 8192 bytes otherwise.
+ */
+#ifndef PHYSFS_DEFAULT_READ_BUFFER
+#ifdef BUFSIZ
+#define PHYSFS_DEFAULT_READ_BUFFER BUFSIZ
+#else
+#define PHYSFS_DEFAULT_READ_BUFFER 8192
+#endif
+#endif
+
+#ifdef USE_PHYSFS
+
+#include <physfs.h>
+#define MY_FILETYPE PHYSFS_File
+#define MY_SETBUFFER(fp,size) PHYSFS_setBuffer(fp,size)
+#define MY_READ(p,s,n,fp) PHYSFS_read(fp,p,s,n)
+#if PHYSFS_DEFAULT_READ_BUFFER
+static MY_FILETYPE* MY_OPEN_FOR_READ(const char *const filename)
+{
+ MY_FILETYPE *const file = PHYSFS_openRead(filename);
+ if (file) {
+ MY_SETBUFFER(file, PHYSFS_DEFAULT_READ_BUFFER);
+ }
+ return file;
+}
+#else
+#define MY_OPEN_FOR_READ(fn) PHYSFS_openRead(fn)
+#endif
+static int MY_GETC(MY_FILETYPE *const fp) {
+ unsigned char c;
+ /*if (PHYSFS_eof(fp)) {
+ return EOF;
+ }
+ MY_READ(&c, 1, 1, fp);*/
+ if (MY_READ(&c, 1, 1, fp) != 1) {
+ return EOF;
+ }
+ return c;
+}
+static char * MY_GETS(char * const str, const int size,
+ MY_FILETYPE *const fp) {
+ int i = 0;
+ int c;
+ do {
+ if (i == size-1) {
+ break;
+ }
+ c = MY_GETC(fp);
+ if (c == EOF) {
+ break;
+ }
+ str[i++] = c;
+ } while (c != '\0' &&
+ c != -1 &&
+ c != '\n');
+ str[i] = '\0';
+ if (i == 0) {
+ return NULL;
+ }
+ return str;
+}
+#define MY_CLOSE(fp) PHYSFS_close(fp)
+#define MY_ATEOF(fp) PHYSFS_eof(fp)
+#define MY_TELL(fp) PHYSFS_tell(fp)
+#define MY_SEEK(fp,o) PHYSFS_seek(fp,o)
+#define MY_REWIND(fp) MY_SEEK(fp,0)
+
+#else
+
+#define MY_FILETYPE FILE
+#define MY_READ(p,s,n,fp) fread(p,s,n,fp)
+#define MY_OPEN_FOR_READ(n) fopen(n, "rb")
+#define MY_GETC(fp) fgetc(fp)
+#define MY_GETS(str,size,fp) fgets(str,size,fp)
+#define MY_CLOSE(fp) fclose(fp)
+#define MY_ATEOF(fp) feof(fp)
+#define MY_TELL(fp) ftell(fp)
+#define MY_SEEK(fp,o) fseek(fp,o, SEEK_SET)
+#define MY_REWIND(fp) rewind(fp)
+/*static void MY_SETBUFFER(const MY_FILETYPE *const file, const int num) { }*/
+#define MY_SETBUFFER(fp,size)
+#endif
+
+#endif
projects / physicsfs / blobdiff