From dca9e1d6f3ee32f26c1831a0a9b3a6a8aa775509 Mon Sep 17 00:00:00 2001
From: Mark Adler <madler@alumni.caltech.edu>
Date: Sat, 26 May 2012 10:37:17 -0700
Subject: Add inflateGetDictionary() function.

---
 inflate.c | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

(limited to 'inflate.c')

diff --git a/inflate.c b/inflate.c
index 47418a1..d1efdb8 100644
--- a/inflate.c
+++ b/inflate.c
@@ -1264,6 +1264,29 @@ z_streamp strm;
     return Z_OK;
 }
 
+int ZEXPORT inflateGetDictionary(strm, dictionary, dictLength)
+z_streamp strm;
+Bytef *dictionary;
+uInt *dictLength;
+{
+    struct inflate_state FAR *state;
+
+    /* check state */
+    if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
+    state = (struct inflate_state FAR *)strm->state;
+
+    /* copy dictionary */
+    if (state->whave && dictionary != Z_NULL) {
+        zmemcpy(dictionary, state->window + state->wnext,
+                state->whave - state->wnext);
+        zmemcpy(dictionary + state->whave - state->wnext,
+                state->window, state->wnext);
+    }
+    if (dictLength != Z_NULL)
+        *dictLength = state->whave;
+    return Z_OK;
+}
+
 int ZEXPORT inflateSetDictionary(strm, dictionary, dictLength)
 z_streamp strm;
 const Bytef *dictionary;
-- 
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