Env::version()

Cargo.toml

@@ -5,11 +5,11 @@ version = "0.21.0"
 edition = "2018"
 rust-version = "1.60"
 authors = ["Tyler Neely <t@jujit.su>", "David Greenberg <dsg123456789@gmail.com>"]
-repository = "https://github.com/rust-rocksdb/rust-rocksdb"
+repository = "https://git.nextgraph.org/NextGraph/rust-rocksdb"
 license = "Apache-2.0"
 categories = [ "database" ]
 keywords = ["database", "embedded", "LSM-tree", "persistence"]
-homepage = "https://github.com/rust-rocksdb/rust-rocksdb"
+homepage = "https://git.nextgraph.org/NextGraph/rust-rocksdb"
 exclude = [
     ".gitignore",
     ".travis.yml",

librocksdb-sys/api/.clang-format

@@ -0,0 +1,3 @@
+---
+BasedOnStyle: Google
+...

librocksdb-sys/api/c.cc

@@ -0,0 +1,18 @@
+#include "../rocksdb/include/rocksdb/version.h"
+
+#include "c.h"
+
+static char* CopyString(const std::string& str) {
+  char* result = reinterpret_cast<char*>(malloc(sizeof(char) * str.size()));
+  memcpy(result, str.data(), sizeof(char) * str.size());
+  return result;
+}
+
+extern "C" {
+
+char* rocksdb_version() {
+  auto name = ROCKSDB_NAMESPACE::GetRocksVersionAsString(true);
+  return CopyString(name);
+}
+
+}

librocksdb-sys/api/c.h

@@ -0,0 +1,11 @@
+#pragma once
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+char* rocksdb_version();
+
+#ifdef __cplusplus
+}
+#endif

librocksdb-sys/build.rs

@@ -32,6 +32,7 @@ fn rocksdb_include_dir() -> String {
 fn bindgen_rocksdb() {
     let bindings = bindgen::Builder::default()
         .header(rocksdb_include_dir() + "/rocksdb/c.h")
+        .header("api/c.h")
         .derive_debug(false)
         .blocklist_type("max_align_t") // https://github.com/rust-lang-nursery/rust-bindgen/issues/550
         .ctypes_prefix("libc")
@@ -255,6 +256,7 @@ fn build_rocksdb() {
     }
 
     config.file("build_version.cc");
+    config.file("api/c.cc");
 
     config.cpp(true);
     config.flag_if_supported("-std=c++17");

src/env.rs

@@ -1,6 +1,7 @@
 use std::sync::Arc;
 
-use libc::{self, c_int};
+use crate::ffi_util::from_cstr;
+use libc::{self, c_char, c_int};
 
 use crate::{ffi, Error};
 
@@ -30,6 +31,14 @@ impl Drop for EnvWrapper {
 }
 
 impl Env {
+    pub fn version() -> String {
+        unsafe {
+            let ptr: *const c_char = ffi::rocksdb_version();
+            let s = from_cstr(ptr);
+            s
+        }
+    }
+
     /// Returns default env
     pub fn new() -> Result<Self, Error> {
         let env = unsafe { ffi::rocksdb_create_default_env() };