Use serde_bare and update format version

Cargo.lock

@@ -162,6 +162,38 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
+[[package]]
+name = "clap"
+version = "3.0.0-beta.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4bd1061998a501ee7d4b6d449020df3266ca3124b941ec56cf2005c3779ca142"
+dependencies = [
+ "atty",
+ "bitflags",
+ "clap_derive",
+ "indexmap",
+ "lazy_static",
+ "os_str_bytes",
+ "strsim",
+ "termcolor",
+ "textwrap",
+ "unicode-width",
+ "vec_map",
+]
+
+[[package]]
+name = "clap_derive"
+version = "3.0.0-beta.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "370f715b81112975b1b69db93e0b56ea4cd4e5002ac43b2da8474106a54096a1"
+dependencies = [
+ "heck",
+ "proc-macro-error",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "cmake"
 version = "0.1.45"
@@ -852,6 +884,12 @@ dependencies = [
  "pkg-config",
 ]
 
+[[package]]
+name = "hashbrown"
+version = "0.9.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d7afe4a420e3fe79967a00898cc1f4db7c8a49a9333a29f8a4bd76a253d5cd04"
+
 [[package]]
 name = "heck"
 version = "0.3.2"
@@ -884,6 +922,16 @@ dependencies = [
  "version_check",
 ]
 
+[[package]]
+name = "indexmap"
+version = "1.6.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "824845a0bf897a9042383849b02c1bc219c2383772efcd5c6f9766fa4b81aef3"
+dependencies = [
+ "autocfg",
+ "hashbrown",
+]
+
 [[package]]
 name = "instant"
 version = "0.1.9"
@@ -1034,6 +1082,12 @@ version = "1.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "13bd41f508810a131401606d54ac32a467c97172d74ba7662562ebba5ad07fa0"
 
+[[package]]
+name = "os_str_bytes"
+version = "2.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "afb2e1c3ee07430c2cf76151675e583e0f19985fa6efae47d6848a3e2c824f85"
+
 [[package]]
 name = "pango"
 version = "0.9.1"
@@ -1343,6 +1397,15 @@ dependencies = [
  "serde_derive",
 ]
 
+[[package]]
+name = "serde_bare"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "01db2255aa98fb93ad74272d8b2e6fd4851860e733e944b9439cf148127164b2"
+dependencies = [
+ "serde",
+]
+
 [[package]]
 name = "serde_derive"
 version = "1.0.117"
@@ -1487,6 +1550,7 @@ checksum = "213701ba3370744dcd1a12960caa4843b3d68b4d1c0a5d575e0d65b2ee9d16c0"
 name = "stiletto"
 version = "0.1.0"
 dependencies = [
+ "clap",
  "druid",
  "gdk",
  "gio",
@@ -1494,9 +1558,16 @@ dependencies = [
  "im",
  "log",
  "serde",
+ "serde_bare",
  "serde_json",
 ]
 
+[[package]]
+name = "strsim"
+version = "0.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "73473c0e59e6d5812c5dfe2a064a6444949f089e20eec9a2e5506596494e4623"
+
 [[package]]
 name = "strum"
 version = "0.18.0"
@@ -1551,6 +1622,24 @@ dependencies = [
  "version-compare",
 ]
 
+[[package]]
+name = "termcolor"
+version = "1.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2dfed899f0eb03f32ee8c6a0aabdb8a7949659e3466561fc0adf54e26d88c5f4"
+dependencies = [
+ "winapi-util",
+]
+
+[[package]]
+name = "textwrap"
+version = "0.12.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "203008d98caf094106cfaba70acfed15e18ed3ddb7d94e49baec153a2b462789"
+dependencies = [
+ "unicode-width",
+]
+
 [[package]]
 name = "thiserror"
 version = "1.0.24"
@@ -1759,6 +1848,12 @@ version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b1d386ff53b415b7fe27b50bb44679e2cc4660272694b7b6f3326d8480823a94"
 
+[[package]]
+name = "unicode-width"
+version = "0.1.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9337591893a19b88d8d87f2cec1e73fad5cdfd10e5a6f349f498ad6ea2ffb1e3"
+
 [[package]]
 name = "unicode-xid"
 version = "0.2.1"
@@ -1807,6 +1902,12 @@ dependencies = [
  "getrandom",
 ]
 
+[[package]]
+name = "vec_map"
+version = "0.8.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f1bddf1187be692e79c5ffeab891132dfb0f236ed36a43c7ed39f1165ee20191"
+
 [[package]]
 name = "version-compare"
 version = "0.0.10"
@@ -1905,6 +2006,15 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
 
+[[package]]
+name = "winapi-util"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "70ec6ce85bb158151cae5e5c87f95a8e97d2c0c4b001223f33a334e3ce5de178"
+dependencies = [
+ "winapi",
+]
+
 [[package]]
 name = "winapi-x86_64-pc-windows-gnu"
 version = "0.4.0"

Cargo.toml

@@ -3,18 +3,16 @@ name = "stiletto"
 version = "0.1.0"
 authors = ["Enrico Lumetti <enrico.lumetti@gmail.com>"]
 edition = "2018"
+default-run = "stiletto"
 
 [dependencies]
 log = "0.4"
 druid = { version = "0.7.0", features = ["im", "svg"] }
 im = { version = "*" }
 serde = { version = "1.0", features = ["derive"] }
-#serde_bare = "0.3.0"
+serde_bare = "0.3.0"
 serde_json = "1.0"
-
-[patch.crates-io]
-druid = { git = "https://github.com/doppioandante/druid", branch = "v0.7.0_stiletto", features = ["im", "svg"] }
-#druid = { path = "../druid/druid/", features = ["im", "svg"] }
+clap = "3.0.0-beta.2"
 
 [target.'cfg(target_os="linux")'.dependencies.gtk]
 version = "0.9.2"
@@ -27,3 +25,8 @@ features = ["v2_56"]
 [target.'cfg(target_os="linux")'.dependencies.gdk]
 version = "0.13.2"
 features = ["v3_22"]
+
+[patch.crates-io]
+druid = { git = "https://github.com/doppioandante/druid", branch = "v0.7.0_stiletto", features = ["im", "svg"] }
+#druid = { path = "../druid/druid/", features = ["im", "svg"] }
+

src/bin/stlt_migrate.rs

@@ -0,0 +1,48 @@
+//  Stiletto
+//  Copyright (C) 2020 Stiletto Authors
+//
+//  This program 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.
+//
+//  This program 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 GNU Affero General Public License
+//  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+use clap::{Arg, App};
+use stiletto::migration::open_stiletto_document;
+
+use std::fs::File;
+use std::path::PathBuf;
+
+fn main() {
+    let matches = App::new("Stiletto Migration CLI")
+        .version("0.1.0")
+        .author("Stiletto Authors")
+        .about("Migrate a stlt file to the latest version")
+        .arg(Arg::new("INPUT")
+            .about("Sets the input file to use")
+            .required(true)
+            .index(1))
+        .arg(Arg::new("OUTPUT")
+            .about("Sets the output file to use")
+            .required(true)
+            .index(2))
+        .get_matches();
+
+   let input_path = matches.value_of("INPUT").unwrap();
+   let output_path = matches.value_of("OUTPUT").unwrap();
+
+   let out_file = File::create(&output_path).expect("Cannot create output fle");
+
+   let result = open_stiletto_document(&PathBuf::from(&input_path));
+   if let Ok(document) = result {
+       let snapshot = document.migrate_to_latest();
+       snapshot.to_writer(out_file);
+   }
+}

src/canvas.rs

@@ -197,7 +197,7 @@ impl Serialize for Path {
             PathEl::MoveTo(pt) => Some(Into::<(f64, f64)>::into(pt)),
             PathEl::LineTo(pt) => Some(Into::<(f64, f64)>::into(pt)),
             _ => None,
-        }))
+        }).collect::<Vec<(f64, f64)>>())
     }
 }
 

src/lib.rs

@@ -21,6 +21,7 @@ pub mod canvas;
 pub mod history;
 pub mod tool;
 pub mod widget;
+pub mod migration;
 
 pub mod commands {
     use druid::Selector;
@@ -30,9 +31,18 @@ pub mod commands {
     pub const POP_ERASER: Selector<()> = Selector::new("pop_eraser_context");
 }
 
+pub const STILETTO_FORMAT_MAJOR: u16 = 0;
+pub const STILETTO_FORMAT_MINOR: u16 = 2;
+
 #[derive(Serialize, Deserialize, Debug)]
 pub struct DocumentSnapshot {
     pub format_version_major: u16,
     pub format_version_minor: u16,
     pub canvas_elements: Vec<canvas::CanvasElement>,
 }
+
+impl DocumentSnapshot {
+    pub fn to_writer<W: std::io::Write>(&self, writer: W) -> Result<(), serde_bare::Error> {
+        serde_bare::to_writer(writer, &self)
+    }
+}

src/main.rs

@@ -260,7 +260,7 @@ impl AppDelegate<StilettoState> for Delegate {
             let res_file = File::create(&path_buf);
             if let Ok(f) = res_file {
                 let write_res =
-                    serde_json::to_writer_pretty(f, &data.canvas.get_document_snapshot());
+                    data.canvas.get_document_snapshot().to_writer(f);
                 if write_res.is_err() {
                     warn!("Error while saving: {:?}", write_res.err());
                 } else {
@@ -274,8 +274,8 @@ impl AppDelegate<StilettoState> for Delegate {
         }
         if let Some(file_info) = cmd.get(commands::OPEN_FILE) {
             if let Ok(f) = File::open(file_info.path()) {
-                let res_snapshot: Result<DocumentSnapshot, serde_json::Error> =
-                    serde_json::from_reader(f);
+                let res_snapshot: Result<DocumentSnapshot, serde_bare::Error> =
+                    serde_bare::from_reader(f);
                 if let Ok(document_snapshot) = res_snapshot {
                     data.canvas.set_from_snapshot(document_snapshot);
                     data.current_file_path = Some(file_info.path().to_path_buf());

src/migration.rs

@@ -0,0 +1,142 @@
+//  Stiletto
+//  Copyright (C) 2020 Stiletto Authors
+//
+//  This program 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.
+//
+//  This program 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 GNU Affero General Public License
+//  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+use crate::{DocumentSnapshot, STILETTO_FORMAT_MAJOR, STILETTO_FORMAT_MINOR};
+
+use std::error::Error;
+use std::fmt;
+use std::fs::File;
+use std::io;
+use std::path::PathBuf;
+
+#[derive(Debug)]
+pub enum MigrationError {
+    SerdeJsonError(serde_json::Error),
+    SerdeBareError(serde_bare::Error),
+    IoError(io::Error),
+
+    UnexpectedVersion(u16, u16, u16, u16),
+}
+
+#[derive(Debug)]
+pub enum StilettoDocument {
+    DocumentSnapshot0_1(DocumentSnapshot),
+    DocumentSnapshot0_2(DocumentSnapshot),
+}
+
+impl StilettoDocument {
+    pub fn version(&self) -> (u16, u16) {
+        match &self {
+            StilettoDocument::DocumentSnapshot0_1(_) => (0, 1),
+            StilettoDocument::DocumentSnapshot0_2(_) => (0, 2),
+        }
+    }
+
+    pub fn migrate_to_next(self) -> StilettoDocument {
+        match self {
+            StilettoDocument::DocumentSnapshot0_1(snapshot) =>  StilettoDocument::DocumentSnapshot0_2(snapshot) ,
+            StilettoDocument::DocumentSnapshot0_2(_) => self,
+        }
+    }
+
+    pub fn migrate_to_latest(mut self) -> DocumentSnapshot {
+        while self.version() != (STILETTO_FORMAT_MAJOR, STILETTO_FORMAT_MINOR) {
+            self = self.migrate_to_next()
+        }
+
+        assert!(matches!(self, StilettoDocument::DocumentSnapshot0_2(_)));
+        match self {
+            StilettoDocument::DocumentSnapshot0_2(snapshot) => snapshot,
+            _ => panic!("Wrong Document Snapshot Version")
+        }
+    }
+}
+
+
+impl fmt::Display for MigrationError {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        match &self {
+            MigrationError::SerdeJsonError(e) => e.fmt(f),
+            MigrationError::SerdeBareError(e) => e.fmt(f),
+            MigrationError::IoError(e) => e.fmt(f),
+            MigrationError::UnexpectedVersion(major, minor, e_major, e_minor) => {
+                write!(
+                    f, "Unexpected version ({}, {}): was expecting ({}, {})",
+                    major, minor, e_major, e_minor
+                )
+            },
+        }
+    }
+}
+
+impl Error for MigrationError {
+    fn source(&self) -> Option<&(dyn Error + 'static)> {
+        match self {
+            MigrationError::SerdeJsonError(e) => e.source(),
+            MigrationError::SerdeBareError(e) => e.source(),
+            MigrationError::IoError(e) => e.source(),
+            MigrationError::UnexpectedVersion(..) => None,
+        }
+    }
+}
+
+impl From<io::Error> for MigrationError {
+    fn from(error: io::Error) -> Self {
+        MigrationError::IoError(error)
+    }
+}
+
+impl From<serde_json::Error> for MigrationError {
+    fn from(error: serde_json::Error) -> Self {
+        MigrationError::SerdeJsonError(error)
+    }
+}
+
+impl From<serde_bare::Error> for MigrationError {
+    fn from(error: serde_bare::Error) -> Self {
+        MigrationError::SerdeBareError(error)
+    }
+}
+
+fn open_0_1(path: &PathBuf) -> Result<StilettoDocument, MigrationError> {
+    let f = File::open(path)?;
+    let document_snapshot: DocumentSnapshot = serde_json::from_reader(f)?;
+    if document_snapshot.format_version_major != 0 ||
+        document_snapshot.format_version_minor != 1 {
+        Err(MigrationError::UnexpectedVersion(
+            document_snapshot.format_version_major,
+            document_snapshot.format_version_minor,
+            0, 1
+        ))
+    } else {
+        Ok(StilettoDocument::DocumentSnapshot0_1(document_snapshot))
+    }
+}
+
+fn open_0_2(path: &PathBuf) -> Result<StilettoDocument, MigrationError> {
+    let f = File::open(path)?;
+    let document_snapshot: DocumentSnapshot = serde_bare::from_reader(f)?;
+    Ok(StilettoDocument::DocumentSnapshot0_2(document_snapshot))
+}
+
+pub fn open_stiletto_document(path: &PathBuf) -> Result<StilettoDocument, MigrationError> {
+    if let Ok(res) = open_0_1(path) {
+        return Ok(res);
+    }
+
+    open_0_2(path)
+}
+