Add HN text extraction.

1 files changed, 19 insertions, 1 deletions

diff --git a/src/cnki_zlib.c b/src/cnki_zlib.c
index 4355433..fd4cedf 100644
--- a/src/cnki_zlib.c
+++ b/src/cnki_zlib.c
@@ -4,4 +4,22 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-#include <zlib.h>
+#include <stdint.h>
+#include <string.h>
+
+#include "zlib.h"
+
+int
+cnki_zlib(char **dst, int *dst_size,
+	const char * restrict src, int src_size)
+{
+	int32_t size;
+	memcpy(&size, src + 20, 4);
+
+	*dst_size = size;
+
+	if (strinflate(dst, size, src + 24, size - 24) != 0)
+		return 1;
+
+	return 0;
+}