1 files changed, 83 insertions, 0 deletions
diff --git a/cfile.h b/cfile.h
new file mode 100644
index 0000000..32dc562
--- /dev/null
+++ b/cfile.h
@@ -0,0 +1,83 @@
+/*
+ * Copyright (c) 2005 Michael Schroeder (mls@suse.de)
+ *
+ * This program is licensed under the BSD license, read LICENSE.BSD
+ * for further information
+ */
+
+#include <zlib.h>
+#include <bzlib.h>
+#include <lzma.h>
+
+struct cfile {
+  int fd;
+  void *fp;
+  int comp;
+  int level;
+  size_t len;
+  unsigned char buf[4096];
+  int bufN;
+  int eof;
+  void *ctx;
+  void (*ctxup)(void *, unsigned char *, unsigned int);
+  unsigned int crc;
+  unsigned int crclen;
+  size_t bytes;
+  int nunread;
+  unsigned char *unreadbuf;
+  union {
+    bz_stream bz;
+    z_stream gz;
+    lzma_stream lz;
+  } strm;
+  int (*read)(struct cfile *f, void *buf, int len);
+  int (*write)(struct cfile *f, void *buf, int len);
+  int (*close)(struct cfile *f);
+  int (*unread)(struct cfile *f, void *buf, int len);
+  int (*oldread)(struct cfile *f, void *buf, int len);
+};
+
+typedef void (*cfile_ctxup)(void *, unsigned char *, unsigned int);
+
+#define CFILE_IO_FILE   (-2)
+#define CFILE_IO_CFILE  (-3)
+#define CFILE_IO_BUFFER (-4)
+#define CFILE_IO_ALLOC  (-5)
+#define CFILE_IO_NULL   (-6)
+
+#define CFILE_IO_REOPEN     (-99)
+#define CFILE_IO_PUSHBACK   (-100)	/* internal */
+
+#define CFILE_COMP_XX (255)
+#define CFILE_COMP_UN (0)
+#define CFILE_COMP_GZ (1)
+#define CFILE_COMP_BZ_20 (2)
+#define CFILE_COMP_GZ_RSYNC (3)
+#define CFILE_COMP_BZ_17 (4)
+#define CFILE_COMP_LZMA (5)
+#define CFILE_COMP_XZ (6)
+
+#define CFILE_COMP_BZ CFILE_COMP_BZ_20
+
+#define CFILE_MKCOMP(comp, level) ((comp) | ((level) << 8))
+#define CFILE_COMPALGO(comp) ((comp) & 255)
+#define CFILE_COMPLEVEL(comp) ((comp) >> 8 & 255)
+
+#define CFILE_OPEN_RD ('r')
+#define CFILE_OPEN_WR ('w')
+
+#define CFILE_LEN_UNLIMITED ((size_t)-1)
+
+#define CFILE_UNREAD_GET_LEN (-2)
+
+#define CFILE_COPY_CLOSE_IN    (1 << 0)
+#define CFILE_COPY_CLOSE_OUT   (1 << 1)
+#define CFILE_COPY_CLOSE_INOUT (CFILE_COPY_CLOSE_IN|CFILE_COPY_CLOSE_OUT)
+
+#define CFILE_UNREAD_GETBYTES  (-2)
+
+struct cfile *cfile_open(int mode, int fd, void *fp, int comp, size_t len, void (*ctxup)(void *, unsigned char *, unsigned int), void *ctx);
+int cfile_copy(struct cfile *in, struct cfile *out, int flags);
+int cfile_detect_rsync(struct cfile *f);
+char *cfile_comp2str(int comp);
+int cfile_setlevel(int comp, int level);