M000250.html in ripxplore-0.12.0

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-  <title>find_catalog_slot (AppleDos)</title>
+  <title>set_sector (AppleDos)</title>
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-  <pre><span class="ruby-comment cmt"># File lib/file_systems/AppleDos.rb, line 295</span>
-<span class="ruby-keyword kw">def</span> <span class="ruby-keyword kw">self</span>.<span class="ruby-identifier">find_catalog_slot</span>(<span class="ruby-identifier">file_system_image</span>,<span class="ruby-identifier">filename</span>)
-  <span class="ruby-identifier">vtoc_sector</span>=<span class="ruby-identifier">file_system_image</span>.<span class="ruby-identifier">get_sector</span>(<span class="ruby-identifier">vtoc_track_no</span>,<span class="ruby-identifier">vtoc_sector_no</span>)
-  <span class="ruby-identifier">catalog_filename</span>=<span class="ruby-identifier">catalog_filename</span>(<span class="ruby-identifier">filename</span>.<span class="ruby-identifier">upcase</span>) <span class="ruby-keyword kw">unless</span> <span class="ruby-identifier">filename</span>.<span class="ruby-identifier">nil?</span>
-  <span class="ruby-identifier">catalog_track_no</span>=<span class="ruby-identifier">vtoc_sector</span>[<span class="ruby-value">01</span>]
-  <span class="ruby-identifier">catalog_sector_no</span>=<span class="ruby-identifier">vtoc_sector</span>[<span class="ruby-value">02</span>]
+  <pre><span class="ruby-comment cmt"># File lib/file_systems/AppleDos.rb, line 318</span>
+<span class="ruby-keyword kw">def</span> <span class="ruby-keyword kw">self</span>.<span class="ruby-identifier">set_sector</span>(<span class="ruby-identifier">file_system_image</span>,<span class="ruby-identifier">track</span>,<span class="ruby-identifier">sector</span>,<span class="ruby-identifier">contents</span>)
+  <span class="ruby-identifier">file_system_image</span>.<span class="ruby-identifier">set_sector</span>(<span class="ruby-identifier">track</span>,<span class="ruby-identifier">sector</span>,<span class="ruby-identifier">contents</span>)  
   
-  <span class="ruby-keyword kw">while</span> (<span class="ruby-identifier">catalog_track_no</span><span class="ruby-operator">+</span><span class="ruby-identifier">catalog_sector_no</span><span class="ruby-operator">&gt;</span><span class="ruby-value">0</span>) <span class="ruby-keyword kw">do</span>
-    <span class="ruby-identifier">catalog</span>=<span class="ruby-identifier">file_system_image</span>.<span class="ruby-identifier">get_sector</span>(<span class="ruby-identifier">catalog_track_no</span>,<span class="ruby-identifier">catalog_sector_no</span>)    
-    (<span class="ruby-value">0</span><span class="ruby-operator">..</span><span class="ruby-value">7</span>).<span class="ruby-identifier">each</span> <span class="ruby-keyword kw">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">slot_no</span><span class="ruby-operator">|</span>
-      <span class="ruby-identifier">slot_start</span>=<span class="ruby-identifier">slot_no</span><span class="ruby-operator">*</span><span class="ruby-value">0x23</span><span class="ruby-operator">+</span><span class="ruby-value">0x0</span><span class="ruby-constant">B</span>
-      <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">filename</span>.<span class="ruby-identifier">nil?</span> <span class="ruby-operator">&amp;&amp;</span> (<span class="ruby-identifier">catalog</span>[<span class="ruby-identifier">slot_start</span>]<span class="ruby-operator">==</span><span class="ruby-value">0x00</span>)<span class="ruby-operator">||</span> (<span class="ruby-identifier">catalog</span>[<span class="ruby-identifier">slot_start</span>]<span class="ruby-operator">==</span><span class="ruby-value">0x</span><span class="ruby-constant">FF</span>) <span class="ruby-keyword kw">then</span>        
-        <span class="ruby-keyword kw">return</span> [<span class="ruby-identifier">catalog_track_no</span>,<span class="ruby-identifier">catalog_sector_no</span>,<span class="ruby-identifier">slot_start</span>]
-      <span class="ruby-keyword kw">end</span>
-      <span class="ruby-keyword kw">if</span> (<span class="ruby-operator">!</span><span class="ruby-identifier">filename</span>.<span class="ruby-identifier">nil?</span>) <span class="ruby-operator">&amp;&amp;</span> (<span class="ruby-identifier">catalog</span>[<span class="ruby-identifier">slot_start</span><span class="ruby-operator">+</span><span class="ruby-value">0x03</span><span class="ruby-operator">..</span><span class="ruby-identifier">slot_start</span><span class="ruby-operator">+</span><span class="ruby-value">0x20</span>]<span class="ruby-operator">==</span><span class="ruby-identifier">catalog_filename</span>) <span class="ruby-keyword kw">then</span>
-        <span class="ruby-keyword kw">return</span> [<span class="ruby-identifier">catalog_track_no</span>,<span class="ruby-identifier">catalog_sector_no</span>,<span class="ruby-identifier">slot_start</span>]
-      <span class="ruby-keyword kw">end</span>
+  <span class="ruby-comment cmt">#now mark sector as used in sector usage list  
</span>
+  <span class="ruby-keyword kw">if</span> ((<span class="ruby-identifier">track!</span>=<span class="ruby-identifier">vtoc_track_no</span>) <span class="ruby-operator">||</span> (<span class="ruby-identifier">sector!</span>=<span class="ruby-identifier">vtoc_sector_no</span>)) <span class="ruby-keyword kw">then</span> <span class="ruby-comment cmt">#don't bother marking the VTOC sectors used
</span>
+    <span class="ruby-identifier">sector_usage_bitmap_sector</span>=<span class="ruby-identifier">file_system_image</span>.<span class="ruby-identifier">get_sector</span>(<span class="ruby-identifier">vtoc_track_no</span>,<span class="ruby-identifier">vtoc_sector_no</span>)  
+    <span class="ruby-identifier">offset_of_byte_containing_this_sector</span>=<span class="ruby-value">0x38</span><span class="ruby-operator">+</span>(<span class="ruby-identifier">track</span><span class="ruby-operator">*</span><span class="ruby-value">4</span>)
+    <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">sector</span><span class="ruby-operator">&lt;</span><span class="ruby-value">8</span> <span class="ruby-keyword kw">then</span> 
+        <span class="ruby-identifier">offset_of_byte_containing_this_sector</span><span class="ruby-operator">+=</span><span class="ruby-value">1</span>
     <span class="ruby-keyword kw">end</span>
-    <span class="ruby-identifier">catalog_track_no</span>=<span class="ruby-identifier">catalog</span>[<span class="ruby-value">01</span>]
-    <span class="ruby-identifier">catalog_sector_no</span>=<span class="ruby-identifier">catalog</span>[<span class="ruby-value">02</span>]    
+    <span class="ruby-identifier">byte_containing_this_sector</span>=<span class="ruby-identifier">sector_usage_bitmap_sector</span>[<span class="ruby-identifier">offset_of_byte_containing_this_sector</span>]
+    <span class="ruby-identifier">byte_containing_this_sector</span>=<span class="ruby-identifier">byte_containing_this_sector</span><span class="ruby-operator">&amp;</span>(<span class="ruby-value">0xff</span><span class="ruby-operator">-</span>(<span class="ruby-value">2</span><span class="ruby-operator">**</span>(<span class="ruby-identifier">sector</span><span class="ruby-operator">%</span><span class="ruby-value">8</span>)))
+    <span class="ruby-identifier">sector_usage_bitmap_sector</span>[<span class="ruby-identifier">offset_of_byte_containing_this_sector</span>]=<span class="ruby-identifier">byte_containing_this_sector</span>
+    <span class="ruby-identifier">file_system_image</span>.<span class="ruby-identifier">set_sector</span>(<span class="ruby-identifier">vtoc_track_no</span>,<span class="ruby-identifier">vtoc_sector_no</span>,<span class="ruby-identifier">sector_usage_bitmap_sector</span>)
   <span class="ruby-keyword kw">end</span>
-  <span class="ruby-keyword kw">nil</span>
 <span class="ruby-keyword kw">end</span></pre>
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