dict-size: make lz4 context const

change the context to const to make clear that the context is not modified
lz4 · Jun 11, 2022 · 9a42a9d · 9a42a9d
1 parent 3c57d2f
commit 9a42a9d
Show file tree

Hide file tree

Showing 5 changed files with 7 additions and 7 deletions.
diff --git a/doc/lz4_manual.html b/doc/lz4_manual.html
@@ -391,7 +391,7 @@ <h1>1.9.4 Manual</h1>
 
 </p></pre><BR>
 
-<pre><b>LZ4LIB_STATIC_API int LZ4_getDictSize (LZ4_stream_t* LZ4_dict, int dictSize);
+<pre><b>LZ4LIB_STATIC_API int LZ4_getDictSize (const LZ4_stream_t* LZ4_dict, int dictSize);
 </b><p> Get the size of the dictionary. This can be used for adding data without
  compression to the LZ4 archive. If linked blocked mode is used the memory
  of the dictionary is kept free.

diff --git a/lib/lz4.c b/lib/lz4.c
@@ -1689,9 +1689,9 @@ int LZ4_compress_forceExtDict (LZ4_stream_t* LZ4_dict, const char* source, char*
  * @param dictSize The maximum dictionary size. (Normally 64 KB).
  * @return The size of the dictionary.
  */
-int LZ4_getDictSize (LZ4_stream_t* LZ4_dict, int dictSize)
+int LZ4_getDictSize (const LZ4_stream_t* LZ4_dict, int dictSize)
 {
-  LZ4_stream_t_internal* const dict = &LZ4_dict->internal_donotuse;
+  const LZ4_stream_t_internal* const dict = &LZ4_dict->internal_donotuse;
 
   if ((U32)dictSize > 64 KB) { dictSize = 64 KB; } /* useless to define a dictionary > 64 KB */
   if ((U32)dictSize > dict->dictSize) { dictSize = (int)dict->dictSize; }

diff --git a/lib/lz4.h b/lib/lz4.h
@@ -519,7 +519,7 @@ LZ4LIB_STATIC_API void LZ4_attach_dictionary(LZ4_stream_t* workingStream, const
  * @param dictSize The maximum dictionary size. (Normally 64 KB).
  * @return The size of the dictionary.
  */
-LZ4LIB_STATIC_API int LZ4_getDictSize (LZ4_stream_t* LZ4_dict, int dictSize);
+LZ4LIB_STATIC_API int LZ4_getDictSize (const LZ4_stream_t* LZ4_dict, int dictSize);
 
 /*! In-place compression and decompression
  *

diff --git a/lib/lz4hc.c b/lib/lz4hc.c
@@ -1164,8 +1164,8 @@ int LZ4_compress_HC_continue_destSize (LZ4_streamHC_t* LZ4_streamHCPtr, const ch
  * @param dictSize The maximum dictionary size. (Normally 64 KB).
  * @return The size of the dictionary.
  */
-int LZ4_getDictHCSize(LZ4_streamHC_t* LZ4_streamHCPtr, int dictSize) {
-  LZ4HC_CCtx_internal* const streamPtr = &LZ4_streamHCPtr->internal_donotuse;
+int LZ4_getDictHCSize(const LZ4_streamHC_t* LZ4_streamHCPtr, int dictSize) {
+  const LZ4HC_CCtx_internal* const streamPtr = &LZ4_streamHCPtr->internal_donotuse;
   int const prefixSize = (int)(streamPtr->end - (streamPtr->base + streamPtr->dictLimit));
   DEBUGLOG(5, "LZ4_saveDictHC(%p, %p, %d)", LZ4_streamHCPtr, safeBuffer, dictSize);
   assert(prefixSize >= 0);

diff --git a/lib/lz4hc.h b/lib/lz4hc.h
@@ -415,7 +415,7 @@ LZ4LIB_STATIC_API void LZ4_attach_HC_dictionary(
  * @param dictSize The maximum dictionary size. (Normally 64 KB).
  * @return The size of the dictionary.
  */
-LZ4LIB_STATIC_API int LZ4_getDictHCSize(LZ4_streamHC_t* LZ4_streamHCPtr, int dictSize);
+LZ4LIB_STATIC_API int LZ4_getDictHCSize(const LZ4_streamHC_t* LZ4_streamHCPtr, int dictSize);
 
 #if defined (__cplusplus)
 }