Added choice of project, r/w perms, and fixed up some css

app/assets/javascripts/memory.js

@@ -1,10 +1,17 @@
 $(function() {
+  $('td').focus(function() {
+    if (this.id.split("-")[0] == "memory") {
+      $(this).css("background-color", "lightblue")
+    }
+  });
   var data = [];
   $('td').keydown(function() {
     data.push(this.id, $(this).html().substr(0, 2)); //position, value
   })
   $('td').blur(function() {
+    $(this).css("background", "none");
     if ((id_i = data.indexOf(this.id) != -1) && data[id_i+1] != $(this).html().substr(0, 2)) {
+      $(this).css("color", "darkgreen");
       var int_id = this.id.split("-")[1]
       $.post("/memory/update_memory?project="+$(this).closest("table").data("project")+"&file="+Math.floor((int_id/2048)+1)+"&mem_id="+int_id%2048+"&value="+$(this).html().substr(0, 2));
       data.splice(id_i, 2);

app/assets/stylesheets/style.css.scss

@@ -1028,9 +1028,11 @@ nav.pagination {
   text-shadow: none;
 }
 .memory-table {
-  width: 870px;
+  width: 980px;
   margin: auto;
+  text-align: center;
   th, td {
+    height: 20px;
     border: 1px solid black;
   }
 }

app/controllers/memory_controller.rb

@@ -16,30 +16,31 @@ class MemoryController < ApplicationController
   end
 
   def table
-    Dir.chdir("/etc/minecraft/redstoner/plugins/JavaUtils/memory/projects/#{params[:project]}")
+    Dir.chdir("/etc/minecraft/redstoner/plugins/JavaUtils/memory/projects/#{params[:project].gsub(/[^a-zA-Z0-9-]/,"")[0..35]}")
     @data = []
     Dir.glob('*').reverse.each do |f|
       File.open(Dir.pwd+"/#{f}") do |file|
         @data.concat(file.read.unpack("C*").map{|h| h.to_s(16)})
-        if JSON.parse((jf = File.open(Dir.pwd+"/project.json")).read)["read"].include? current_user.uuid.gsub("-","")
-          @can_edit = false
-        else
+        unless (parse = JSON.parse((jf = File.open(Dir.pwd+"/project.json")).read))["read"].include? current_user.uuid.gsub("-","")
           @can_edit = true
         end
+        @name = parse["name"]
         jf.close
       end
     end
   end
 
   def update_memory
-    Dir.chdir("/etc/minecraft/redstoner/plugins/JavaUtils/memory/projects/#{params[:project]}")
-    new_text = ""
-    File.open("#{params[:file]}.hex"){|f| new_text = f.read.unpack("C*").collect{|h| h.to_s(16)}}
-    new_text[params[:mem_id].to_i] = params[:value]
-    File.open("#{params[:file]}.hex", "w") do |f|
-      f.write((new_text.collect{|h| h.to_s.to_i(16)}).pack("C*").force_encoding("UTF-8"))
+    Dir.chdir("/etc/minecraft/redstoner/plugins/JavaUtils/memory/projects/#{params[:project].gsub(/[^a-zA-Z0-9-]/,"")[0..35]}")
+    unless params[:mem_id].to_i > JSON.parse(File.read("project.json"))["size"] || (/[^A-Fa-f0-9]/.match params[:value])
+      new_text = ""
+      File.open("#{params[:file]}.hex"){|f| new_text = f.read.unpack("C*").collect{|h| h.to_s(16)}}
+      new_text[params[:mem_id].to_i] = params[:value]
+      File.open("#{params[:file]}.hex", "w") do |f|
+        f.write((new_text.collect{|h| h.to_s.to_i(16)}).pack("C*").force_encoding("UTF-8"))
+      end
+      render nothing: true
     end
-    render nothing: true
   end
 
   private

app/views/memory/index.html.erb

@@ -1,4 +1,5 @@
-<%= form_tag "memory/table", method: :get do %>
+<%= form_tag url_for(controller: "memory", action: "table"), method: :get do %>
   <%= select_tag "project", options_for_select(@projects.collect.with_index{|p, i| [@project_names[i], p]}) %>
-  <%= submit_tag "View Table", name: nil %>
+  <br><br>
+  <%= submit_tag "Load table", name: nil, class: "btn blue" %>
 <% end %>

app/views/memory/table.html.erb

@@ -1,3 +1,4 @@
+<h1 style="text-align:center"><%= title @name + (" (read-only)" if !@can_edit).to_s %></h1>
 <table class="memory-table", data-project="<%=params[:project]%>">
   <tr>
     <% ["Address","0","1","2","3","4","5","6","7","8","9","A","B","C","D","E","F"].each do |i| %>
@@ -8,7 +9,7 @@
     <tr>
       <td><b><%=(rindex*16).to_s(16).upcase.rjust(6, "0")%></b></td>
       <% row.each_with_index do |hex, hindex| %>
-        <td contenteditable="<%=@can_edit%>" id="memory-<%=(16*rindex)+hindex%>"><%=hex.to_s.upcase.rjust(2, "0")%></td>
+        <td contenteditable="<%=!!@can_edit%>" id="memory-<%=(16*rindex)+hindex%>"><%=hex.to_s.upcase.rjust(2, "0")%></td>
       <% end %>
     </tr>
   <% end %>

config/database.yml

@@ -10,7 +10,7 @@ default: &default
 development:
   <<: *default
   database: redstoner-web
-  username: root
+  username: web
 
 production:
   <<: *default
@@ -24,4 +24,4 @@ test:
   adapter: sqlite3
   database: db/test.sqlite3
   pool: 5
-  timeout: 5000
+  timeout: 5000

config/environments/development.rb

@@ -43,4 +43,4 @@ Redstoner::Application.configure do
     password:       ENV["GMAIL_PASSWORD"],
   }
 
-end
+end

db/seeds.rb

@@ -38,4 +38,4 @@ User.create!(
   password: "123456789", # high seructity!
   password_confirmation: "123456789",
   role: Role.get(:superadmin)
-)
+)