Change directory structure.

[dvibrowser/dvi2epub.git] / src / main / java / jp / sourceforge / dvibrowser / dvicore / DviFontName.java

diff --git a/src/main/java/jp/sourceforge/dvibrowser/dvicore/DviFontName.java b/src/main/java/jp/sourceforge/dvibrowser/dvicore/DviFontName.java
new file mode 100644 (file)
index 0000000..1038bf0
--- /dev/null
+++ b/src/main/java/jp/sourceforge/dvibrowser/dvicore/DviFontName.java
@@ -0,0 +1,122 @@
+/*
+ * Copyright (c) 2009, Takeyuki Nagao
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the
+ * following conditions are met:
+ * 
+ *  * Redistributions of source code must retain the above
+ *    copyright notice, this list of conditions and the
+ *    following disclaimer.
+ *  * Redistributions in binary form must reproduce the above
+ *    copyright notice, this list of conditions and the
+ *    following disclaimer in the documentation and/or other
+ *    materials provided with the distribution.
+ *    
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+ * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
+ * OF SUCH DAMAGE.
+ */
+
+package jp.sourceforge.dvibrowser.dvicore;
+
+import java.io.Serializable;
+
+import jp.sourceforge.dvibrowser.dvicore.util.Canonicalizer;
+import jp.sourceforge.dvibrowser.dvicore.util.SimpleCanonicalizer;
+
+
+// immutable.
+
+public final class DviFontName
+implements Serializable
+{
+  private static final long serialVersionUID = 5473736840728986859L;
+  private final int al, nl;
+  private final String name;
+  private final int hash;
+
+  private DviFontName(int al, int nl, String name)
+  {
+    if (name == null)
+      throw new NullPointerException
+        ("name can't be null");
+    if (al < 0 || 255 < al)
+      throw new IllegalArgumentException
+        ("illegal value of area length: " + al);
+    if (nl < 0 || 255 < nl)
+      throw new IllegalArgumentException
+        ("illegal value of name length: " + nl);
+    if (name.length() != (al + nl))
+      throw new IllegalArgumentException
+        ("name size mismatch:"
+        + " name.length()=" + name.length()
+        + " al=" + al
+        + " nl=" + nl
+        );
+
+    this.al = al;
+    this.nl = nl;
+    this.name = name;
+    this.hash = al + 33*(nl + 33*name.hashCode());
+  }
+
+  public int areaLength() { return al; }
+  public int nameLength() { return nl; }
+  public String name() { return name; }
+
+  private static final Canonicalizer<DviFontName> canonicalizer
+    = new SimpleCanonicalizer<DviFontName>();
+
+  public static DviFontName getInstance(int al, int nl, String name)
+  {
+    return canonicalizer.canonicalize(
+      new DviFontName(al, nl, name)
+    );
+  }
+  public static DviFontName getInstance(int nl, String name)
+  {
+    return getInstance(0, nl, name);
+  }
+  public static DviFontName getInstance(String name)
+  {
+    return getInstance(0, name.length(), name);
+  }
+
+  private volatile String string = null;
+  public String toString() {
+    if (string == null) {
+      string = getClass().getName()
+        + "[al=" + al
+        + ",nl=" + nl
+        + ",name=" + name
+        + "]";
+    }
+    return string;
+  }
+
+  public boolean equals(Object obj) {
+    if (obj == this) return true;
+    if (obj instanceof DviFontName) {
+      DviFontName fn = (DviFontName) obj;
+      return name.equals(fn.name) && al == fn.al && nl == fn.nl;
+    }
+    return false;
+  }
+
+  public int hashCode() {
+    return hash;
+  }
+}