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+++ b/doc/docs/dev/api/core/zfile.md	Wed Mar 10 18:39:50 2021 +0100
@@ -0,0 +1,52 @@
+# Module: zfile
+
+Synopsis
+
+```c
+#include <core/zfile.h>
+```
+
+Open potentially compressed file through [ZSTD][] using C `FILE` interface.
+
+## Structs
+
+### zfile
+
+This structure owns the context for loading the file and must be kept until the
+FILE pointer is no longer necessary.
+
+| Field             | Access | Type                                             |
+|-------------------|--------|--------------------------------------------------|
+| [fp](#fp)         | (+)    | `FILE *`                                         |
+
+#### fp
+
+The C file pointer to read. It is opened in read-only text mode and must not be
+closed, free'd or anything else.
+
+## Functions
+
+### zfile\_open
+
+Open a file from `path` which can be compressed using [ZSTD][] or kept plain. If
+compressed the data is decompressed transparently and stored into the structure
+context `zf`.
+
+Returns -1 on failure and 0 on success, in this case you can access the `fp`
+field member to perform read operations.
+
+```c
+int
+zfile_open(struct zfile *zf, const char *path)
+```
+
+### zfile\_close
+
+Close the file context `zf`.
+
+```c
+void
+zfile_close(struct zfile *zf)
+```
+
+[ZSTD]: http://zstandard.org