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-  <title>files (AppleCPM)</title>
+  <title>set_block (AppleCPM)</title>
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-  <pre><span class="ruby-comment cmt"># File lib/file_systems/AppleCPM.rb, line 81</span>
-<span class="ruby-keyword kw">def</span> <span class="ruby-keyword kw">self</span>.<span class="ruby-identifier">files</span>(<span class="ruby-identifier">file_system_image</span>)
-  <span class="ruby-identifier">files</span>=<span class="ruby-constant">FileContainer</span>.<span class="ruby-identifier">new</span>
-  <span class="ruby-identifier">catalog</span>=<span class="ruby-identifier">get_block</span>(<span class="ruby-identifier">file_system_image</span>,<span class="ruby-value">0</span>)<span class="ruby-operator">+</span><span class="ruby-identifier">get_block</span>(<span class="ruby-identifier">file_system_image</span>,<span class="ruby-value">1</span>)
-  <span class="ruby-value">0</span>.<span class="ruby-identifier">upto</span>(<span class="ruby-value">63</span>) <span class="ruby-keyword kw">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">dir_entry_no</span><span class="ruby-operator">|</span>
-    <span class="ruby-identifier">dir_entry_start</span>=<span class="ruby-identifier">dir_entry_no</span><span class="ruby-operator">*</span><span class="ruby-value">0x20</span>
-    <span class="ruby-identifier">dir_entry</span>=<span class="ruby-identifier">catalog</span>[<span class="ruby-identifier">dir_entry_start</span><span class="ruby-operator">..</span><span class="ruby-identifier">dir_entry_start</span><span class="ruby-operator">+</span><span class="ruby-value">0x1</span><span class="ruby-constant">F</span>]      
-    <span class="ruby-keyword kw">if</span> (<span class="ruby-identifier">dir_entry</span>[<span class="ruby-value">0</span>]<span class="ruby-operator">&lt;</span><span class="ruby-value">0x10</span>) <span class="ruby-keyword kw">then</span>
-      <span class="ruby-identifier">file_name</span>=<span class="ruby-identifier">dir_entry</span>[<span class="ruby-value">0x01</span><span class="ruby-operator">..</span><span class="ruby-value">0x08</span>].<span class="ruby-identifier">gsub</span>(<span class="ruby-value str">' '</span>,<span class="ruby-value str">''</span>)
-      <span class="ruby-identifier">file_ext</span>=<span class="ruby-identifier">dir_entry</span>[<span class="ruby-value">0x09</span><span class="ruby-operator">..</span><span class="ruby-value">0x0</span><span class="ruby-constant">B</span>].<span class="ruby-identifier">gsub</span>(<span class="ruby-value str">' '</span>,<span class="ruby-value str">''</span>)
-      <span class="ruby-identifier">full_filename</span>=<span class="ruby-node">&quot;#{file_name}.#{file_ext}&quot;</span>
-      <span class="ruby-identifier">files</span><span class="ruby-operator">&lt;&lt;</span><span class="ruby-constant">NativeFileType</span>.<span class="ruby-identifier">best_fit</span>(<span class="ruby-identifier">file_system_image</span>,<span class="ruby-identifier">full_filename</span>,<span class="ruby-value str">''</span>,<span class="ruby-identifier">file_ext</span>)
-      <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">files</span>[<span class="ruby-identifier">full_filename</span>].<span class="ruby-identifier">nil?</span> <span class="ruby-keyword kw">then</span>
-        <span class="ruby-identifier">files</span><span class="ruby-operator">&lt;&lt;</span><span class="ruby-identifier">file</span> 
-      <span class="ruby-keyword kw">end</span>
-      <span class="ruby-identifier">s</span>=<span class="ruby-value str">&quot;&quot;</span>
-      <span class="ruby-value">0x10</span>.<span class="ruby-identifier">upto</span>(<span class="ruby-value">0x1f</span>) <span class="ruby-keyword kw">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">i</span><span class="ruby-operator">|</span>
-        <span class="ruby-identifier">block</span>=<span class="ruby-identifier">dir_entry</span>[<span class="ruby-identifier">i</span>]
-        <span class="ruby-identifier">s</span><span class="ruby-operator">+=</span><span class="ruby-identifier">get_block</span>(<span class="ruby-identifier">file_system_image</span>,<span class="ruby-identifier">block</span>) <span class="ruby-keyword kw">unless</span> <span class="ruby-identifier">block</span><span class="ruby-operator">==</span><span class="ruby-value">0</span>
-      <span class="ruby-keyword kw">end</span>        
-      <span class="ruby-identifier">records_allocated</span>=<span class="ruby-identifier">dir_entry</span>[<span class="ruby-value">0x0</span><span class="ruby-constant">F</span>]
-      <span class="ruby-identifier">files</span>[<span class="ruby-identifier">full_filename</span>].<span class="ruby-identifier">contents</span><span class="ruby-operator">+=</span><span class="ruby-identifier">s</span>[<span class="ruby-value">0</span>,(<span class="ruby-identifier">records_allocated</span><span class="ruby-operator">*</span><span class="ruby-value">128</span>)]
-    <span class="ruby-keyword kw">end</span>
-  <span class="ruby-keyword kw">end</span>    
-  <span class="ruby-identifier">files</span>
-<span class="ruby-keyword kw">end</span></pre>
+  <pre><span class="ruby-comment cmt"># File lib/file_systems/AppleCPM.rb, line 39</span>
+  <span class="ruby-keyword kw">def</span> <span class="ruby-keyword kw">self</span>.<span class="ruby-identifier">set_block</span>(<span class="ruby-identifier">file_system_image</span>,<span class="ruby-identifier">block_no</span>,<span class="ruby-identifier">contents</span>)
+    <span class="ruby-identifier">raise</span> <span class="ruby-node">&quot;invalid block #{block_no} - length was #{contents.length}&quot;</span> <span class="ruby-keyword kw">unless</span> <span class="ruby-identifier">contents</span>.<span class="ruby-identifier">length</span><span class="ruby-operator">==</span><span class="ruby-constant">BLOCK_SIZE</span>
+    <span class="ruby-identifier">track_no</span>=(<span class="ruby-identifier">block_no</span><span class="ruby-operator">/</span><span class="ruby-value">4</span>)<span class="ruby-operator">+</span><span class="ruby-value">3</span>
+    <span class="ruby-value">0</span>.<span class="ruby-identifier">upto</span>(<span class="ruby-value">3</span>) <span class="ruby-keyword kw">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">i</span><span class="ruby-operator">|</span>
+      <span class="ruby-identifier">sector_no</span>=<span class="ruby-constant">SECTORS_IN_BLOCK</span>[<span class="ruby-identifier">block_no</span><span class="ruby-operator">%</span><span class="ruby-value">4</span>][<span class="ruby-identifier">i</span>]
+      <span class="ruby-identifier">file_system_image</span>.<span class="ruby-identifier">set_sector</span>(<span class="ruby-identifier">track_no</span>,<span class="ruby-identifier">sector_no</span>,<span class="ruby-identifier">contents</span>[(<span class="ruby-identifier">i</span><span class="ruby-operator">*</span><span class="ruby-value">256</span>),<span class="ruby-value">256</span>])
+    <span class="ruby-keyword kw">end</span>  
+  <span class="ruby-keyword kw">end</span></pre>
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