jvanzyl 00/10/17 02:33:47
Modified: src/java/org/apache/velocity/convert WebMacro.java
Log:
- can now convert an entire directory structure of templates for
quick mass migration from WebMacro to Velocity. Successfully
converted the Scarab and Helm templates.
Revision Changes Path
1.3 +148 -46
jakarta-velocity/src/java/org/apache/velocity/convert/WebMacro.java
Index: WebMacro.java
===================================================================
RCS file:
/home/cvs/jakarta-velocity/src/java/org/apache/velocity/convert/WebMacro.java,v
retrieving revision 1.2
retrieving revision 1.3
diff -u -r1.2 -r1.3
--- WebMacro.java 2000/10/17 06:12:03 1.2
+++ WebMacro.java 2000/10/17 09:33:46 1.3
@@ -54,8 +54,12 @@
* <http://www.apache.org/>.
*/
+import java.io.File;
+import java.io.FileWriter;
+
import org.apache.oro.text.perl.Perl5Util;
import org.apache.velocity.util.StringUtils;
+import org.apache.tools.ant.DirectoryScanner;
/**
* This class will convert a WebMacro template to
@@ -63,58 +67,150 @@
*/
public class WebMacro
{
- public static void main(String args[])
+ protected String orignalTemplate;
+ protected Perl5Util perl;
+ protected String pathSeparator = File.separator;
+
+ protected final static String VM_EXT = ".vm";
+ protected final static String WM_EXT = ".wm";
+
+ /*
+ * The regexes to use for substition. The regexes come
+ * in pairs. The first is the string to match, the
+ * second is the substitution to make.
+ */
+ protected String[] res =
{
- String orignalTemplate;
- Perl5Util perl;
+ // Remove all #begin statements.
+ "#begin\\n",
+ "",
+
+ // Remove the "{" for the start of block directives,
+ // Velocity doesn't use them.
+ "(#\\w+\\s*.*)\\n?\\s*\\{",
+ "$1",
+
+ // Change the "}" to #end. Have to get more
+ // sophisticated here. Will assume either {}
+ // and no javascript, or #begin/#end with the
+ // possibility of javascript.
+ "}",
+ "#end",
+
+ // Convert WM style if/else to Velocity style.
+ "#end.*\\n?\\s*(#else)",
+ "$1",
+
+ // Convert WM style #foreach to Velocity #foreach.
+ "#foreach\\s+(\\$\\w+)\\s+in\\s+(\\$\\w+)",
+ "#foreach ($1 in $2)",
- /*
- * The regexes to use for substition. The regexes come
- * in pairs. The first is the string to match, the
- * second is the substitution to make.
- */
- String[] res =
- {
- // Remove all #begin statements.
- "#begin\\n",
- "",
-
- // Remove the "{" for the start of block directives,
- // Velocity doesn't use them.
- "(#\\w+\\s+.*)\\n\\s*\\{",
- "$1",
-
- // Change the "}" to #end. Have to get more
- // sophisticated here. Will assume either {}
- // and no javascript, or #begin/#end with the
- // possibility of javascript.
- "}",
- "#end",
-
- // Convert WM style if/else to Velocity style.
- "#end.*\\n\\s*(#else)",
- "$1",
-
- // Convert WM style #foreach to Velocity #foreach.
- "#foreach\\s+(\\$\\w+)\\s+in\\s+(\\$\\w+)",
- "#foreach ($1 in $2)",
-
- // Change parse to include.
- "#parse",
- "#include",
-
- // Change extensions when seen.
- "\\.wm",
- ".vm"
- };
-
+ // Change parse to include.
+ "#parse",
+ "#include",
+
+ // Change extensions when seen.
+ "\\.wm",
+ ".vm"
+ };
+
+ public void convert(String args[])
+ {
if (args.length < 1)
+ usage();
+
+ File file = new File(args[0]);
+
+ if (!file.exists())
{
- System.err.println("Usage: convert-wm <template>.wm | directory");
+ System.err.println("The template or directory specified doesn't
exist!");
System.exit(1);
}
+
+ if (file.isDirectory())
+ {
+ String basedir = args[0];
+ String newBasedir = basedir + VM_EXT;
+
+ DirectoryScanner ds = new DirectoryScanner();
+ ds.setBasedir(basedir);
+ ds.addDefaultExcludes();
+ ds.scan();
+ String[] files = ds.getIncludedFiles();
+
+ for (int i = 0; i < files.length; i++)
+ writeTemplate(files[i], basedir, newBasedir);
+ }
+ else
+ writeTemplate(args[0], "", "");
+ }
- orignalTemplate = StringUtils.fileContentsToString(args[0]);
+ private boolean writeTemplate(String file, String basedir, String newBasedir)
+ {
+ if (file.indexOf(WM_EXT) < 0)
+ return false;
+
+ System.out.println("Converting " + file + "...");
+
+ String template;
+ String templateDir;
+ String newTemplate;
+ File outputDirectory;
+
+ if (basedir.length() == 0)
+ {
+ template = file;
+ templateDir = "";
+ newTemplate = convertName(file);
+ }
+ else
+ {
+ template = basedir + pathSeparator + file;
+ templateDir = newBasedir + pathSeparator +
+ file.substring(0, file.lastIndexOf(pathSeparator));
+
+ outputDirectory = new File(templateDir);
+
+ if (! outputDirectory.exists())
+ outputDirectory.mkdirs();
+
+ newTemplate = newBasedir + pathSeparator +
+ convertName(file);
+ }
+
+ String convertedTemplate = convertTemplate(template);
+
+ try
+ {
+ FileWriter fw = new FileWriter(newTemplate);
+ fw.write(convertedTemplate);
+ fw.close();
+ }
+ catch (Exception e)
+ {
+ e.printStackTrace();
+ }
+
+ return true;
+ }
+
+ private String convertName(String name)
+ {
+ if (name.indexOf(WM_EXT) > 0)
+ return name.substring(0, name.indexOf(WM_EXT)) + VM_EXT;
+ else
+ return name;
+ }
+
+ public void usage()
+ {
+ System.err.println("Usage: convert-wm <template>.wm | directory");
+ System.exit(1);
+ }
+
+ public String convertTemplate(String template)
+ {
+ orignalTemplate = StringUtils.fileContentsToString(template);
perl = new Perl5Util();
for (int i = 0; i < res.length; i += 2)
@@ -122,6 +218,12 @@
orignalTemplate = perl.substitute(
"s/" + res[i] + "/" + res[i+1] + "/", orignalTemplate);
- System.out.println(orignalTemplate);
+ return orignalTemplate;
+ }
+
+ public static void main(String[] args)
+ {
+ WebMacro converter = new WebMacro();
+ converter.convert(args);
}
}
