bindgen.rs - mozsearch

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use bindgen::callbacks::IntKind;

use bindgen::callbacks::ParseCallbacks;

use std::env;

use std::path::PathBuf;

#[derive(Debug)]

struct Callbacks;

impl ParseCallbacks for Callbacks {

    fn int_macro(&self, name: &str, _value: i64) -> Option<IntKind> {

        match name {

            "MDB_SUCCESS"

            | "MDB_KEYEXIST"

            | "MDB_NOTFOUND"

            | "MDB_PAGE_NOTFOUND"

            | "MDB_CORRUPTED"

            | "MDB_PANIC"

            | "MDB_VERSION_MISMATCH"

            | "MDB_INVALID"

            | "MDB_MAP_FULL"

            | "MDB_DBS_FULL"

            | "MDB_READERS_FULL"

            | "MDB_TLS_FULL"

            | "MDB_TXN_FULL"

            | "MDB_CURSOR_FULL"

            | "MDB_PAGE_FULL"

            | "MDB_MAP_RESIZED"

            | "MDB_INCOMPATIBLE"

            | "MDB_BAD_RSLOT"

            | "MDB_BAD_TXN"

            | "MDB_BAD_VALSIZE"

            | "MDB_BAD_DBI"

            | "MDB_LAST_ERRCODE" => Some(IntKind::Int),

            _ => Some(IntKind::UInt),

pub fn generate() {

    let mut lmdb = PathBuf::from(&env::var("CARGO_MANIFEST_DIR").unwrap());

    lmdb.push("lmdb");

    lmdb.push("libraries");

    lmdb.push("liblmdb");

    let mut out_path = PathBuf::from(&env::var("CARGO_MANIFEST_DIR").unwrap());

    out_path.push("src");

    let bindings = bindgen::Builder::default()

        .header(lmdb.join("lmdb.h").to_string_lossy())

        .whitelist_var("^(MDB|mdb)_.*")

        .whitelist_type("^(MDB|mdb)_.*")

        .whitelist_function("^(MDB|mdb)_.*")

        .size_t_is_usize(true)

        .ctypes_prefix("::libc")

        .blacklist_item("mode_t")

        .blacklist_item("mdb_mode_t")

        .blacklist_item("mdb_filehandle_t")

        .blacklist_item("^__.*")

        .parse_callbacks(Box::new(Callbacks {}))

        .layout_tests(false)

        .prepend_enum_name(false)

        .rustfmt_bindings(true)

        .generate()

        .expect("Unable to generate bindings");

    bindings

        .write_to_file(out_path.join("bindings.rs"))

        .expect("Couldn't write bindings!");