*** empty log message ***

2 files changed, 30 insertions, 9 deletions

diff --git a/Changes b/Changes
index dda2cab..b69d2b0 100644
--- a/Changes
+++ b/Changes
@@ -1,3 +1,12 @@
+
+1.6  Fri Jul  7 17:31:26 CEST 2006
+	- the lzf example utility will now uncompress if invoked
+          as "unlzf" (patch by Scott Feeney).
+        - add CHECK_INPUT option that adds more checks for input
+          data validity.
+        - help applications that do not pass in the correct length
+          (such as php) by returning either EINVAL or E2BIG.
+
 1.51 Thu Apr 14 22:15:46 CEST 2005
 	- incorporated C♯ implementation of both the en- and decoder,
           written by "Oren J. Maurice <oymaurice@hazorea.org.il>".
diff --git a/lzfP.h b/lzfP.h
index 48963b2..84c6028 100644
--- a/lzfP.h
+++ b/lzfP.h
@@ -46,19 +46,19 @@
 #endif
 
 /*
- * size of hashtable is (1 << HLOG) * sizeof (char *)
+ * Size of hashtable is (1 << HLOG) * sizeof (char *)
  * decompression is independent of the hash table size
  * the difference between 15 and 14 is very small
- * for small blocks (and 14 is usually a but faster).
+ * for small blocks (and 14 is usually a bit faster).
  * For a low-memory/faster configuration, use HLOG == 13;
  * For best compression, use 15 or 16 (or more).
  */
 #ifndef HLOG
-# define HLOG 14
+# define HLOG 15
 #endif
 
 /*
- * sacrifice very little compression quality in favour of compression speed.
+ * Sacrifice very little compression quality in favour of compression speed.
  * This gives almost the same compression as the default code, and is
  * (very roughly) 15% faster. This is the preferable mode of operation.
  */
@@ -68,7 +68,7 @@
 #endif
 
 /*
- * sacrifice some more compression quality in favour of compression speed.
+ * Sacrifice some more compression quality in favour of compression speed.
  * (roughly 1-2% worse compression for large blocks and
  * 9-10% for small, redundant, blocks and >>20% better speed in both cases)
  * In short: when in need for speed, enable this for binary data,
@@ -79,14 +79,14 @@
 #endif
 
 /*
- * unconditionally aligning does not cost very much, so do it if unsure
+ * Unconditionally aligning does not cost very much, so do it if unsure
  */
 #ifndef STRICT_ALIGN
 # define STRICT_ALIGN !(defined(__i386) || defined (__amd64))
 #endif
 
 /*
- * use string functions to copy memory.
+ * Use string functions to copy memory.
  * this is usually a loss, even with glibc's optimized memcpy
  */
 #ifndef USE_MEMCPY
@@ -94,7 +94,7 @@
 #endif
 
 /*
- * you may choose to pre-set the hash table (might be faster on some
+ * You may choose to pre-set the hash table (might be faster on some
  * modern cpus and large (>>64k) blocks)
  */
 #ifndef INIT_HTAB
@@ -102,7 +102,7 @@
 #endif
 
 /*
- * avoid assigning values to errno variable? for some embedding purposes
+ * Avoid assigning values to errno variable? for some embedding purposes
  * (linux kernel for example), this is neccessary. NOTE: this breaks
  * the documentation in lzf.h.
  */
@@ -119,6 +119,18 @@
 # define LZF_STATE_ARG 0
 #endif
 
+/*
+ * Wether to add extra checks for input validity in lzf_decompress
+ * and return EINVAL if the input stream has been corrupted. This
+ * only shields against overflowing the input buffer and will not
+ * detect most corrupted streams.
+ * This check is not normally noticable on modern hardware
+ * (<1% slowdown), but might slow down older cpus considerably.
+ */
+#ifndef CHECK_INPUT
+# define CHECK_INPUT 0
+#endif
+
 /*****************************************************************************/
 /* nothing should be changed below */