wasm: Fix operation not supported on std::fs. Closes #115 (#166)

* Add new web-based std::fs replacement, localstoragefs:

https://github.com/iceiix/localstoragefs

* Add std_or_web to switch between std::fs (native) or localstoragefs (web)

* Update www readme for new missing glutin/winit links, opens issue #171

Cargo.toml

@@ -66,3 +66,7 @@ version = "0"
 [dependencies.steven_shared]
 path = "./shared"
 version = "0"
+
+[dependencies.std_or_web]
+path = "./std_or_web"
+version = "0"

src/console/mod.rs

@@ -17,7 +17,7 @@ use std::collections::HashMap;
 use std::any::Any;
 use std::cell::{RefCell, Ref};
 use std::sync::{Arc, Mutex};
-use std::fs;
+use std_or_web::fs;
 use std::io::{BufWriter, Write, BufRead, BufReader};
 use log;
 

src/protocol/mod.rs

@@ -19,6 +19,7 @@ use aes::Aes128;
 use cfb8::Cfb8;
 use cfb8::stream_cipher::{NewStreamCipher, StreamCipher};
 use serde_json;
+use std_or_web::fs;
 #[cfg(not(target_arch = "wasm32"))]
 use reqwest;
 
@@ -1070,7 +1071,7 @@ impl Conn {
 
         if network_debug {
             debug!("about to parse id={:x}, dir={:?} state={:?}", id, dir, self.state);
-            std::fs::File::create("last-packet")?.write_all(buf.get_ref())?;
+            fs::File::create("last-packet")?.write_all(buf.get_ref())?;
         }
 
         let packet = packet::packet_by_id(self.protocol_version, self.state, dir, id, &mut buf)?;

src/render/mod.rs

@@ -865,7 +865,7 @@ impl TextureManager {
     #[cfg(not(target_arch = "wasm32"))]
     fn obtain_skin(client: &::reqwest::Client, hash: &str) -> Result<image::DynamicImage, ::std::io::Error> {
         use std::io::Read;
-        use std::fs;
+        use std_or_web::fs;
         use std::path::Path;
         use std::io::{Error, ErrorKind};
         let path = format!("skin-cache/{}/{}.png", &hash[..2], hash);

src/resources.rs

@@ -17,7 +17,7 @@ extern crate steven_resources as internal;
 use std::thread;
 use std::path;
 use std::io;
-use std::fs;
+use std_or_web::fs;
 use std::sync::mpsc;
 use std::sync::{Arc, Mutex};
 use std::collections::HashMap;

src/screen/edit_server.rs

@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-use std::fs;
+use std_or_web::fs;
 use std::collections::BTreeMap;
 
 use crate::ui;

src/screen/server_list.rs

@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-use std::fs;
+use std_or_web::fs;
 use std::thread;
 use std::sync::mpsc;
 use std::rc::Rc;