Initial

1 files changed, 77 insertions, 0 deletions

diff --git a/core/compress.c b/core/compress.c
new file mode 100644
index 0000000..6ca72c6
--- /dev/null
+++ b/core/compress.c
@@ -0,0 +1,77 @@
+// file    : core/compress.c
+// project : Salis-VM
+// author  : Paul Oliver <contact@pauloliver.dev>
+
+// index:
+// [section] includes
+// [section] definitions
+
+// ----------------------------------------------------------------------------
+// [section] includes
+// ----------------------------------------------------------------------------
+#include <assert.h>
+#include <zlib.h>
+
+#include "compress.h"
+
+// ----------------------------------------------------------------------------
+// [section] definitions
+// ----------------------------------------------------------------------------
+int comp_deflate(struct DeflateParams *params) {
+    assert(params);
+    assert(params->size);
+    assert(params->in);
+    assert(params->out);
+
+    params->strm.zalloc = NULL;
+    params->strm.zfree = NULL;
+    params->strm.opaque = NULL;
+
+    deflateInit(&params->strm, Z_DEFAULT_COMPRESSION);
+
+    params->strm.avail_in = params->size;
+    params->strm.avail_out = params->size;
+    params->strm.next_in = params->in;
+    params->strm.next_out = params->out;
+
+    deflate(&params->strm, Z_FINISH);
+
+    return 0;
+}
+
+int comp_inflate(struct InflateParams *params) {
+    assert(params);
+    assert(params->avail_in);
+    assert(params->size);
+    assert(params->in);
+    assert(params->out);
+
+    params->strm.next_in = params->in;
+    params->strm.avail_in = params->avail_in;
+    params->strm.zalloc = NULL;
+    params->strm.zfree = NULL;
+    params->strm.opaque = NULL;
+
+    inflateInit(&params->strm);
+
+    params->strm.avail_out = params->size;
+    params->strm.next_out = params->out;
+
+#if defined(NDEBUG)
+    inflate(&params->strm, Z_FINISH);
+#else
+    assert(inflate(&params->strm, Z_FINISH));
+#endif
+
+    return 0;
+}
+
+void comp_deflate_end(struct DeflateParams *params) {
+    assert(params);
+    deflateEnd(&params->strm);
+}
+
+void comp_inflate_end(struct InflateParams *params) {
+    assert(params);
+    inflateEnd(&params->strm);
+}