Restructure project and some progress.

Cargo.lock

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-"checksum libc 0.2.69 (registry+https://github.com/rust-lang/crates.io-index)" = "99e85c08494b21a9054e7fe1374a732aeadaff3980b6990b94bfd3a70f690005"
-"checksum match_cfg 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ffbee8634e0d45d258acb448e7eaab3fce7a0a467395d4d9f228e3c1f01fb2e4"
-"checksum ppv-lite86 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)" = "74490b50b9fbe561ac330df47c08f3f33073d2d00c150f719147d7c54522fa1b"
-"checksum proc-macro2 1.0.10 (registry+https://github.com/rust-lang/crates.io-index)" = "df246d292ff63439fea9bc8c0a270bed0e390d5ebd4db4ba15aba81111b5abe3"
-"checksum quote 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)" = "2bdc6c187c65bca4260c9011c9e3132efe4909da44726bad24cf7572ae338d7f"
-"checksum rand 0.7.3 (registry+https://github.com/rust-lang/crates.io-index)" = "6a6b1679d49b24bbfe0c803429aa1874472f50d9b363131f0e89fc356b544d03"
-"checksum rand_chacha 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "f4c8ed856279c9737206bf725bf36935d8666ead7aa69b52be55af369d193402"
-"checksum rand_core 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "90bde5296fc891b0cef12a6d03ddccc162ce7b2aff54160af9338f8d40df6d19"
-"checksum rand_hc 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ca3129af7b92a17112d59ad498c6f81eaf463253766b90396d39ea7a39d6613c"
-"checksum rustc-demangle 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)" = "4c691c0e608126e00913e33f0ccf3727d5fc84573623b8d65b2df340b5201783"
-"checksum serde 1.0.106 (registry+https://github.com/rust-lang/crates.io-index)" = "36df6ac6412072f67cf767ebbde4133a5b2e88e76dc6187fa7104cd16f783399"
-"checksum serde_derive 1.0.106 (registry+https://github.com/rust-lang/crates.io-index)" = "9e549e3abf4fb8621bd1609f11dfc9f5e50320802273b12f3811a67e6716ea6c"
-"checksum strsim 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "8ea5119cdb4c55b55d432abb513a0429384878c15dde60cc77b1c99de1a95a6a"
-"checksum syn 1.0.18 (registry+https://github.com/rust-lang/crates.io-index)" = "410a7488c0a728c7ceb4ad59b9567eb4053d02e8cc7f5c0e0eeeb39518369213"
-"checksum textwrap 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d326610f408c7a4eb6f51c37c330e496b08506c9457c9d34287ecc38809fb060"
-"checksum toml 0.5.6 (registry+https://github.com/rust-lang/crates.io-index)" = "ffc92d160b1eef40665be3a05630d003936a3bc7da7421277846c2613e92c71a"
-"checksum unicode-width 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)" = "caaa9d531767d1ff2150b9332433f32a24622147e5ebb1f26409d5da67afd479"
-"checksum unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "826e7639553986605ec5979c7dd957c7895e93eabed50ab2ffa7f6128a75097c"
-"checksum uuid 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "9fde2f6a4bea1d6e007c4ad38c6839fa71cbb63b6dbf5b595aa38dc9b1093c11"
-"checksum vec_map 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "05c78687fb1a80548ae3250346c3db86a80a7cdd77bda190189f2d0a0987c81a"
-"checksum version_check 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)" = "078775d0255232fb988e6fccf26ddc9d1ac274299aaedcedce21c6f72cc533ce"
-"checksum wasi 0.9.0+wasi-snapshot-preview1 (registry+https://github.com/rust-lang/crates.io-index)" = "cccddf32554fecc6acb585f82a32a72e28b48f8c4c1883ddfeeeaa96f7d8e519"
-"checksum winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)" = "8093091eeb260906a183e6ae1abdba2ef5ef2257a21801128899c3fc699229c6"
-"checksum winapi-i686-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
-"checksum winapi-x86_64-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"

Cargo.toml

@@ -1,14 +1,6 @@
-[package]
+[workspace]
-name = "bsv"
-version = "0.1.0"
-authors = ["Simon Boyé <sim.boye@gmail.com>"]
-edition = "2018"
-license = "AGPL-3.0-or-later"
 
-[dependencies]
+members = [
-error-chain = "0.12.2"
+	"libbsv",
-serde = "1.0.106"
+	"bsv",
-toml = "0.5.6"
+]
-clap = "2.33.0"
-uuid = { version = "0.8.1", features = ["serde", "v4"] }
-hostname = "0.3.1"

bsv/.gitignore

@@ -0,0 +1,2 @@
+/target
+Cargo.lock

bsv/Cargo.toml

@@ -0,0 +1,12 @@
+[package]
+name = "bsv"
+version = "0.1.0"
+authors = ["Simon Boyé <sim.boye@gmail.com>"]
+edition = "2018"
+license = "AGPL-3.0-or-later"
+
+[dependencies]
+error-chain = "0.12.2"
+clap = "2.33.3"
+hostname = "0.3.1"
+libbsv = { path = "../libbsv" }

src/commands/command.rs → bsv/src/commands/command.rs

@@ -18,7 +18,7 @@ use std::collections::{hash_map, HashMap};
 
 use clap::{App, ArgMatches};
 
-use crate::core::error::*;
+use libbsv::core::error::*;
 
 
 pub trait Command {

src/commands/init.rs → bsv/src/commands/init.rs

@@ -18,8 +18,8 @@ use std::path::PathBuf;
 
 use clap::{App, Arg, ArgMatches, SubCommand};
 
-use crate::core::error::*;
+use libbsv::core::error::*;
-use crate::core::repository::Repository;
+use libbsv::core::repository::Repository;
 
 use super::command::Command;
 

src/main.rs → bsv/src/main.rs

@@ -17,22 +17,23 @@
 #[macro_use]
 extern crate error_chain;
 
+extern crate libbsv;
+
 
-mod core;
 mod commands;
 
 
 use clap::{Arg, App, AppSettings};
 
-use crate::core::error::*;
+use libbsv::core::error::*;
 use crate::commands::default_command_map;
 
 
 fn run() -> Result<()> {
     let command_map = default_command_map();
 
-    let app = App::new(core::NAME)
+    let app = App::new(libbsv::core::NAME)
-        .version(core::VERSION)
+        .version(libbsv::core::VERSION)
         .author("Simon Boyé <sim.boye@gmail.com>")
         .about("Backup, synchronize and versionize your data.")
         .setting(AppSettings::SubcommandRequired)

libbsv/.gitignore

@@ -0,0 +1,2 @@
+/target
+Cargo.lock

libbsv/Cargo.toml

@@ -0,0 +1,13 @@
+[package]
+name = "libbsv"
+version = "0.1.0"
+authors = ["Simon Boyé <sim.boye@gmail.com>"]
+edition = "2018"
+license = "AGPL-3.0-or-later"
+
+[dependencies]
+error-chain = "0.12.2"
+serde = "1.0.106"
+toml = "0.5.6"
+uuid = { version = "0.8.1", features = ["serde", "v4"] }
+tempfile = "3.1.0"

libbsv/src/core/config.rs

@@ -0,0 +1,34 @@
+// This file is part of bsv.
+//
+// bsv is free software: you can redistribute it and/or modify it under the
+// terms of the GNU Affero General Public License as published by the Free
+// Software Foundation, either version 3 of the License, or (at your option)
+// any later version.
+//
+// cdb is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+// FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public License for
+// more details.
+//
+// You should have received a copy of the Affero GNU General Public License
+// along with cdb.  If not, see <https://www.gnu.org/licenses/>.
+
+
+use std::path::PathBuf;
+
+use uuid::Uuid;
+use serde::{Serialize, Deserialize};
+
+
+#[derive(Debug, Serialize, Deserialize)]
+pub struct RepositoryConfig {
+    pub path: PathBuf,
+    pub device_name: String,
+    pub uuid: Uuid,
+}
+
+
+#[derive(Debug, Serialize, Deserialize)]
+pub struct Config {
+    pub repository: RepositoryConfig,
+}

src/core/error.rs → libbsv/src/core/error.rs

@@ -30,7 +30,17 @@ error_chain! {
 
         NonEmptyDirectory(dir: PathBuf) {
             description("Non-empty directory")
-            display("Target directory {:?} must be empty", dir)
+            display("Target directory {:?} must be empty.", dir)
+        }
+
+        InvalidObjectIdSize {
+            description("Object id has an invalid size")
+            display("Object id has an invalid size.")
+        }
+
+        InvalidObjectIdCharacter {
+            description("Object id contains invalid character")
+            display("Object id contains invalid character")
         }
     }
 }

src/core/mod.rs → libbsv/src/core/mod.rs

@@ -15,8 +15,16 @@
 
 
 pub mod error;
+pub mod config;
+pub mod object_id;
 pub mod repository;
 
 
 pub const NAME: &'static str = env!("CARGO_PKG_NAME");
 pub const VERSION: &'static str = env!("CARGO_PKG_VERSION");
+
+
+pub use error::Error;
+pub use config::{Config, RepositoryConfig};
+pub use object_id::ObjectId;
+pub use repository::Repository;

libbsv/src/core/object_id.rs

@@ -0,0 +1,110 @@
+// This file is part of bsv.
+//
+// bsv is free software: you can redistribute it and/or modify it under the
+// terms of the GNU Affero General Public License as published by the Free
+// Software Foundation, either version 3 of the License, or (at your option)
+// any later version.
+//
+// cdb is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+// FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public License for
+// more details.
+//
+// You should have received a copy of the Affero GNU General Public License
+// along with cdb.  If not, see <https://www.gnu.org/licenses/>.
+
+
+use std::fmt;
+
+use super::error::*;
+
+
+/// A unique identifier for an object.
+///
+/// This is the handle used to referenc an Object. This is an opaque type that uniquely identify an
+/// object. It can be compared to another ObjectId, be hashed and that's about it.
+#[derive(Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
+pub struct ObjectId {
+    id: Vec<u8>,
+}
+
+
+impl ObjectId {
+    pub fn new(id: Vec<u8>) -> ObjectId {
+        ObjectId {
+            id
+        }
+    }
+
+    pub fn from_str(id_str: &str) -> Result<ObjectId> {
+        if id_str.len() % 2 != 0 {
+            return Err(ErrorKind::InvalidObjectIdSize.into());
+        }
+
+        let byte_count = id_str.len() / 2;
+        let mut id = Vec::with_capacity(byte_count);
+
+        for byte_index in 0..byte_count {
+            let str_index = byte_index * 2;
+            let byte_str = id_str.get(str_index..(str_index + 2))
+                .ok_or(ErrorKind::InvalidObjectIdCharacter)?;
+            id.push(u8::from_str_radix(byte_str, 16)
+                .or(Err(ErrorKind::InvalidObjectIdCharacter))?);
+        }
+
+        Ok(ObjectId {
+            id
+        })
+    }
+}
+
+
+impl fmt::Display for ObjectId {
+    fn fmt(&self, f: &mut fmt::Formatter) -> std::result::Result<(), fmt::Error> {
+        for byte in self.id.iter() {
+            write!(f, "{:02x}", byte)?;
+        }
+        Ok(())
+    }
+}
+
+
+impl fmt::Debug for ObjectId {
+    fn fmt(&self, f: &mut fmt::Formatter) -> std::result::Result<(), fmt::Error> {
+        write!(f, "ObjectId::new(\"{}\")", self)
+    }
+}
+
+
+#[cfg(test)]
+mod tests {
+    use super::ObjectId;
+
+    #[test]
+    fn object_id_display() {
+        let obj = ObjectId::new(vec![
+            0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
+        ]);
+
+        assert_eq!(format!("{}", obj), "0001020304050607");
+    }
+
+    #[test]
+    fn object_id_debug() {
+        let obj = ObjectId::new(vec![
+            0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
+        ]);
+
+        assert_eq!(format!("{:?}", obj), "ObjectId::new(\"0001020304050607\")");
+    }
+
+    #[test]
+    fn str_to_object_id() {
+        let obj = ObjectId::from_str("0001020304050607").unwrap();
+        let obj_ref = ObjectId::new(vec![
+            0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
+        ]);
+
+        assert_eq!(obj, obj_ref);
+    }
+}

src/core/repository.rs → libbsv/src/core/repository.rs

@@ -16,21 +16,23 @@
 
 use std::path::{Path, PathBuf};
 use std::fs::{self, create_dir};
+use std::rc::Rc;
 
 use uuid::Uuid;
-use serde::{Serialize, Deserialize};
 
-use crate::core::error::*;
+use super::error::*;
+use super::config::{Config, RepositoryConfig};
+
+use crate::simple_db::SimpleDb;
 
 
 const CONFIG_FILENAME: &'static str = ".bsv";
 
 
-#[derive(Debug, Serialize, Deserialize)]
+#[derive(Debug)]
 pub struct Repository {
-    path: PathBuf,
+    config: Rc<Config>,
-    device_name: String,
+    db: SimpleDb,
-    uuid: Uuid,
 }
 
 
@@ -46,11 +48,15 @@ impl Repository {
 
         create_dir(&path).chain_err(|| "Failed to create repository.")?;
 
-        let repository = Repository {
+        let config = Rc::new(
+            Config {
+                repository: RepositoryConfig {
                     path: path.into(),
                     device_name: device_name.into(),
                     uuid: Uuid::new_v4(),
-        };
+                },
+            }
+        );
 
         let config_path = {
             let mut config_path = PathBuf::from(path);
@@ -60,12 +66,15 @@ impl Repository {
 
         fs::write(
             config_path,
-            toml::to_string(&repository)
+            toml::to_string(&*config)
                 .chain_err(|| format!("Failed to serialize {}.", CONFIG_FILENAME))?,
         ).chain_err(||
             format!("Failed to create repository: failed to write {}.", CONFIG_FILENAME)
         )?;
 
-        Ok(repository)
+        Ok(Repository {
+            config: Rc::clone(&config),
+            db: SimpleDb::new(path.into())?,
+        })
     }
 }

libbsv/src/lib.rs

@@ -0,0 +1,32 @@
+// This file is part of bsv.
+//
+// bsv is free software: you can redistribute it and/or modify it under the
+// terms of the GNU Affero General Public License as published by the Free
+// Software Foundation, either version 3 of the License, or (at your option)
+// any later version.
+//
+// cdb is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+// FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public License for
+// more details.
+//
+// You should have received a copy of the Affero GNU General Public License
+// along with cdb.  If not, see <https://www.gnu.org/licenses/>.
+
+
+#[macro_use]
+extern crate error_chain;
+
+
+pub mod core;
+pub mod simple_db;
+
+
+pub use crate::core::{
+    Error,
+    Config, RepositoryConfig,
+    ObjectId,
+    Repository,
+};
+
+pub use crate::simple_db::SimpleDb;

libbsv/src/simple_db/mod.rs

@@ -0,0 +1,76 @@
+// This file is part of bsv.
+//
+// bsv is free software: you can redistribute it and/or modify it under the
+// terms of the GNU Affero General Public License as published by the Free
+// Software Foundation, either version 3 of the License, or (at your option)
+// any later version.
+//
+// cdb is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+// FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public License for
+// more details.
+//
+// You should have received a copy of the Affero GNU General Public License
+// along with cdb.  If not, see <https://www.gnu.org/licenses/>.
+
+
+use std::path::{Path, PathBuf};
+
+use crate::core::error::*;
+use crate::core::object_id::ObjectId;
+
+
+const OBJECTS_FOLDER: &str = "objects";
+
+
+#[derive(Debug)]
+pub struct SimpleDb {
+    path: PathBuf,
+}
+
+
+impl SimpleDb {
+    pub fn new(path: &Path) -> Result<SimpleDb> {
+        Ok(SimpleDb {
+            path: path.into(),
+        })
+    }
+
+
+    pub fn has_object(&self, oid: &ObjectId) -> bool {
+        let obj_path = self.path_from_id(oid);
+        if let Ok(metadata) = std::fs::metadata(obj_path) {
+            metadata.is_file()
+        }
+        else {
+            false
+        }
+    }
+
+    fn path_from_id(&self, oid: &ObjectId) -> PathBuf {
+        let oid_str = oid.to_string();
+        let mut path = self.path.clone();
+
+        path.push(OBJECTS_FOLDER);
+        path.push(oid_str.get(..4).unwrap()); // unwrap is ok here because we know oid_str is a
+        path.push(oid_str.get(4..).unwrap()); // hexadecimal number (i.e. ascii only).
+
+        path
+    }
+}
+
+
+#[cfg(test)]
+mod tests {
+    use super::ObjectId;
+    use super::SimpleDb;
+
+    #[test]
+    fn simple_db_path_from_id() {
+        let db = SimpleDb::new(std::path::Path::new(".bsv")).unwrap();
+        let oid = ObjectId::from_str("0001020304050607").unwrap();
+
+        let path = db.path_from_id(&oid);
+        assert_eq!(path, std::path::PathBuf::from(".bsv/objects/0001/020304050607"));
+    }
+}

libbsv/tests/simple_db.rs

@@ -0,0 +1,40 @@
+// This file is part of bsv.
+//
+// bsv is free software: you can redistribute it and/or modify it under the
+// terms of the GNU Affero General Public License as published by the Free
+// Software Foundation, either version 3 of the License, or (at your option)
+// any later version.
+//
+// cdb is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+// FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public License for
+// more details.
+//
+// You should have received a copy of the Affero GNU General Public License
+// along with cdb.  If not, see <https://www.gnu.org/licenses/>.
+
+
+extern crate tempfile;
+extern crate libbsv;
+
+
+#[test]
+fn simple_db_has_object() {
+    let temp_dir = tempfile::TempDir::new().unwrap();
+    let db = libbsv::SimpleDb::new(temp_dir.path()).unwrap();
+    let oid = libbsv::ObjectId::from_str("0001020304050607").unwrap();
+
+    assert!(!db.has_object(&oid));
+
+    let mut object_path: std::path::PathBuf = temp_dir.path().into();
+    object_path.push("objects");
+    object_path.push("0001");
+
+    std::fs::create_dir_all(&object_path).unwrap();
+
+    object_path.push("020304050607");
+
+    std::fs::write(object_path, "test").unwrap();
+
+    assert!(db.has_object(&oid));
+}