X-Git-Url: http://mj.ucw.cz/gitweb/?a=blobdiff_plain;f=lib%2Flizard.h;h=616d17b0c07e104f149ffff14f0774d2044c458b;hb=da2f99caf76902aacb06fd389994ac79182a92da;hp=35200c08232049a92d6dfacaeca45fee5a87eba2;hpb=4deb7fd75ea1306e943ab414efca26b1951cfd23;p=libucw.git

diff --git a/lib/lizard.h b/lib/lizard.h
index 35200c08..616d17b0 100644
--- a/lib/lizard.h
+++ b/lib/lizard.h
@@ -7,6 +7,9 @@
  *	of the GNU Lesser General Public License.
  */
 
+#ifndef _UCW_LIZARD_H
+#define _UCW_LIZARD_H
+
 #define	LIZARD_NEEDS_CHARS	8
   /* The compression routine needs input buffer 8 characters longer, because it
    * does not check the input bounds all the time.  */
@@ -20,20 +23,27 @@
    * The multiplicative constant comes from 19-byte incompressible string
    * followed by a 3-sequence that can be compressed into 2-byte link.  This
    * breaks the copy-mode and it needs to be restarted with a new header.  The
-   * total length is 2(header) + 2(link) + 19(string) = 23.
+   * total length is 2(header) + 19(string) + 2(link) = 23.
    */
 
 /* lizard.c */
-int lizard_compress(byte *in, uns in_len, byte *out);
-int lizard_decompress(byte *in, byte *out);
+int lizard_compress(const byte *in, uns in_len, byte *out);
+int lizard_decompress(const byte *in, byte *out);
 
 /* lizard-safe.c */
-struct lizard_buffer {
-  uns len;
-  void *start, *ptr;
-  void *old_sigsegv_handler;
-};
+struct lizard_buffer;
 
-struct lizard_buffer *lizard_alloc(uns max_len);
+struct lizard_buffer *lizard_alloc(void);
 void lizard_free(struct lizard_buffer *buf);
-int lizard_decompress_safe(byte *in, struct lizard_buffer *buf, uns expected_length);
+byte *lizard_decompress_safe(const byte *in, struct lizard_buffer *buf, uns expected_length);
+
+/* adler32.c */
+uns update_adler32(uns adler, const byte *ptr, uns len);
+
+static inline uns
+adler32(const byte *buf, uns len)
+{
+  return update_adler32(1, buf, len);
+}
+
+#endif