Improving clarity through better Makefiles.

1 files changed, 117 insertions, 0 deletions

diff --git a/sol-pretty-printer/src/QuickSolParser.java b/sol-pretty-printer/src/QuickSolParser.java
new file mode 100644
index 0000000..e162096
--- /dev/null
+++ b/sol-pretty-printer/src/QuickSolParser.java
@@ -0,0 +1,117 @@
+/* FIXME: Finer imports */
+import java.io.*;
+import java.util.regex.*;
+import java.util.*;
+
+public class QuickSolParser
+{
+   private static final Pattern SOL_ITEM_PATTERN;
+   private final BufferedReader buffered_reader;
+
+   static
+   {
+      SOL_ITEM_PATTERN = Pattern.compile("\\((?<list>[a-zA-Z_0-9 \t]+)\\)");
+   }
+   public QuickSolParser (final String filename)
+   throws FileNotFoundException
+   {
+      buffered_reader = new BufferedReader(new FileReader(filename));
+   }
+
+   public void finalize ()
+   throws IOException
+   {
+      buffered_reader.close();
+   }
+
+   public List<String[]> next_solution ()
+   throws IOException
+   {
+      final List<String[]> result;
+      final Matcher matcher;
+      boolean has_started_sol;
+      String line;
+
+      result = new ArrayList<String[]>();
+      has_started_sol = false;
+
+      matcher = SOL_ITEM_PATTERN.matcher("");
+
+      for (;;)
+      {
+         line = buffered_reader.readLine();
+
+         if (line == null)
+         {
+            return null;
+         }
+
+         line = line.replaceAll("\\s+"," ");
+
+         if (line.equals(")"))
+         {
+            if (!has_started_sol)
+            {
+               throw
+                  new IOException
+                  (
+                     "[E] Incorrect solution structure. (found a \")\" before a"
+                     + " \"(solution\""
+                  );
+            }
+
+            return result;
+         }
+         else if (line.equals("(solution"))
+         {
+            if (has_started_sol)
+            {
+               throw
+                  new IOException
+                  (
+                     "[E] Incorrect solution structure. (found a second"
+                     + "\"(solution\" before the \")\" ending the previous one."
+                  );
+            }
+
+            has_started_sol = true;
+         }
+         else if (line.startsWith(";") || line.length() < 3)
+         {
+            continue;
+         }
+         else
+         {
+            final String[] item;
+
+            matcher.reset(line);
+
+            if (!matcher.find())
+            {
+               throw
+                  new IOException
+                  (
+                     "[E] Incorrect solution structure. \""
+                     + line
+                     + "\" does not form a correct solution item."
+                  );
+            }
+
+            item = matcher.group(1).split(" |\t");
+
+            if (item.length != 3)
+            {
+               throw
+                  new IOException
+                  (
+                     "[E] Incorrect solution item. \""
+                     + line
+                     + "\" should match the form \"(NAME ID TAG)\"."
+                  );
+            }
+
+            result.add(item);
+         }
+      }
+   }
+}