Fst String-to-String Map

A compact String-to-String Map built on Finite State Transducers (fst).

```rust use fststringstring::builder::StringBuilder; use fststringstring::strings::StringMap; use fststringstring::map::StringStringMap; use std::fs::{File,removefile}; use std::path::Path; use fst::Map; use memmap::Mmap;

[test]

fn mbuilder1() -> std::io::Result<()> { if Path::new("testy.fst").exists() { removefile("testy.fst")?; } if Path::new("testy.fmm").exists() { removefile("testy.fmm")?; }

let mut builder = StringBuilder::new("testy.fmm")?; let wtr = std::io::BufWriter::new(File::create("testy.fst")?); let mut fst_builder = fst::MapBuilder::new(wtr).expect("Unable to create fst::MapBuilder");

let i1 = builder.insert("abcd")?; fstbuilder.insert("a", i1 as u64).expect("fst insert"); let i2 = builder.insert("efgh")?; fstbuilder.insert("b", i2 as u64).expect("fst insert"); builder.finish(); fst_builder.finish().expect("Unable to finish build of fst::MapBuilder");

let mmap = unsafe { Mmap::map(&File::open("testy.fst")?).expect("unable to mmap file") }; let fmap = Map::new(mmap).expect("Could not create fst::Map from file"); let smap = StringMap::new("testy.fmm")?; let map = StringStringMap::new(fmap, smap);

asserteq!( map.get("a"), Some("abcd".tostring()) ); asserteq!( map.get("b"), Some("efgh".tostring()) ); assert_eq!( map.get("c"), None );

if Path::new("testy.fst").exists() { removefile("testy.fst")?; } if Path::new("testy.fmm").exists() { removefile("testy.fmm")?; } Ok(()) } ```

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in fst_stringstring by you, shall be dual licensed under the MIT and Apache 2.0 license without any additional terms or conditions.