- Added AbstractFileExpander.java

- Added TextExpander.java
- Added TextWriter.java

1 files changed, 126 insertions, 0 deletions

diff --git a/sources/meta/util/AbstractFileExpander.java b/sources/meta/util/AbstractFileExpander.java
new file mode 100644
index 0000000000..580fa08bd8
--- /dev/null
+++ b/sources/meta/util/AbstractFileExpander.java
@@ -0,0 +1,126 @@
+/*     ____ ____  ____ ____  ______                                     *\
+**    / __// __ \/ __// __ \/ ____/    SOcos COmpiles Scala             **
+**  __\_ \/ /_/ / /__/ /_/ /\_ \       (c) 2002, LAMP/EPFL              **
+** /_____/\____/\___/\____/____/                                        **
+\*                                                                      */
+
+// $Id$
+
+package meta.util;
+
+import java.io.File;
+
+/** A base class for file expanders. */
+public abstract class AbstractFileExpander {
+
+    //########################################################################
+    // Private Constants
+
+    /** The meta package */
+    private static final String meta = "meta";
+
+    /** The meta name prefix */
+    private static final String Meta = "Meta";
+
+    //########################################################################
+    // Public Methods
+
+    /** Returns the TextWriter in which this expander writes. */
+    public abstract TextWriter getTextWriter();
+
+    /**
+     * Returns the package associated with this expander or null if
+     * there no such package. The default implementation returns the
+     * package of this instance's class. If the outermost package is
+     * named "meta", this package is omitted.
+     */
+    public String getPackage() {
+        String fullname = getClass().getName();
+        int end = fullname.lastIndexOf('.');
+        if (end < 0) return null;
+        int start = fullname.startsWith(meta + ".") ? meta.length() + 1 : 0;
+        return fullname.substring(start, end);
+    }
+
+    /**
+     * Returns the name associated with this expander. The default
+     * implementation returns the name of this instance's class. If
+     * that name starts with "Meta", this prefix is omitted.
+     */
+    public String getName() {
+        String fullname = getClass().getName();
+        int index = fullname.lastIndexOf('.');
+        String name = index < 0 ? fullname : fullname.substring(index + 1);
+        return name.startsWith(Meta) ? name.substring(Meta.length()) : name;
+    }
+
+    /**
+     * Returns the directory of the target file. The default
+     * implementation returns the directory corresponding to the
+     * this instance's associated package.
+     */
+    public String getTargetDirectory() {
+        String peckage = getPackage();
+        return peckage == null ? "." : peckage.replace('.',File.separatorChar);
+    }
+
+    /**
+     * Returns the base name of the target file. The default
+     * implementation returns this instance's associated name.
+     */
+    public String getTargetBaseName() {
+        return getName();
+    }
+
+    /**
+     * Returns the suffix of the target file or null if it has no
+     * suffix. The default implementation returns null.
+     */
+    public String getTargetSuffix() {
+        return null;
+    }
+
+    /** Returns the target file. */
+    public File getTargetFile(File root) {
+        String suffix = getTargetSuffix();
+        String name = getTargetBaseName();
+        if (suffix != null) name = name + "." + suffix;
+        return new File(new File(root, getTargetDirectory()), name);
+    }
+
+    /**
+     * Returns the directory of the source file. The default
+     * implementation returns the directory of the target file.
+     */
+    public String getSourceDirectory() {
+        return getTargetDirectory();
+    }
+
+    /**
+     * Returns the base name of the source file. The default
+     * implementation returns the target base name.
+     */
+    public String getSourceBaseName() {
+        return getTargetBaseName();
+    }
+
+    /**
+     * Returns the suffix of the source file or null if it has no
+     * suffix. The default implementation returns the target suffix
+     * suffixed with ".tmpl".
+     */
+    public String getSourceSuffix() {
+        String suffix = getTargetSuffix();
+        return (suffix == null ? "" : suffix + ".") + "tmpl";
+    }
+
+    /** Returns the source file. */
+    public File getSourceFile(File root) {
+        String suffix = getSourceSuffix();
+        String name = getSourceBaseName();
+        if (suffix != null) name = name + "." + suffix;
+        return new File(new File(root, getSourceDirectory()), name);
+    }
+
+    //########################################################################
+}