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// NAnt - A .NET build tool
// Copyright (C) 2001 Gerry Shaw
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
// Serge (serge@wildwestsoftware.com)
// Gerry Shaw (gerry_shaw@yahoo.com)
namespace SourceForge.NAnt {
using System;
using System.IO;
using System.Xml;
using System.Xml.Xsl;
using System.Xml.XPath;
using System.Text.RegularExpressions;
[TaskName("style")]
public class StyleTask : Task {
// TODO: consider prefixing private fields with _ to stay consistent (gs)
[TaskAttribute("basedir", Required=false)]
string baseDir = null;
[TaskAttribute("destdir", Required=false)]
string destDir = null;
[TaskAttribute("extension", Required=false)]
string extension = "html";
[TaskAttribute("style", Required=true)]
string xsltFile = null;
[TaskAttribute("in", Required=true)]
string srcFile = null;
[TaskAttribute("out", Required=false)]
string destFile = null;
private static string GetPath(string dir, string file) {
// TODO: remove platform dependencies by using System.IO.Path (gs)
string d = (dir == null)
? ""
: Regex.Replace(dir, "/", "\\");
return (d==null || d=="")
? (file==null || file=="") ? "" : file
: d.EndsWith("\\")
? d +file : d + "\\" + file;
}
private XmlReader CreateXmlReader(string dir, string file) {
string xmlPath = GetPath(dir, file);
XmlTextReader xmlReader = null;
try {
xmlReader = new XmlTextReader(new FileStream(xmlPath, FileMode.Open));
} catch (Exception) {
xmlReader = null;
}
return xmlReader;
}
private XmlWriter CreateXmlWriter(string dir, string file) {
string xmlPath = GetPath(dir, file);
XmlWriter xmlWriter = null;
string targetDir = Path.GetDirectoryName(Path.GetFullPath(xmlPath));
if (targetDir != null && targetDir != "" && !Directory.Exists(targetDir)) {
Directory.CreateDirectory(targetDir);
}
try {
// UTF-8 encoding will be used
xmlWriter = new XmlTextWriter(xmlPath, null);
} catch (Exception) {
xmlWriter = null;
}
return xmlWriter;
}
protected override void ExecuteTask() {
string destFile = this.destFile;
if (destFile == null || destFile == "") {
// TODO: use System.IO.Path (gs)
string ext = extension[0]=='.'
? extension
: "." + extension;
int extPos = srcFile.LastIndexOf('.');
if (extPos == -1) {
destFile = srcFile + ext;
} else {
destFile = srcFile.Substring(0, extPos) + ext;
}
}
string srcPath = GetPath(baseDir, srcFile);
string destPath = GetPath(destDir, destFile);
string xsltPath = GetPath(baseDir, xsltFile);
FileInfo srcInfo = new FileInfo(srcPath);
FileInfo destInfo = new FileInfo(destPath);
FileInfo xsltInfo = new FileInfo(xsltPath);
if (!srcInfo.Exists) {
throw new BuildException("Unable to find source xml file.");
}
if (!xsltInfo.Exists) {
throw new BuildException("Unable to find stylesheet file.");
}
bool destOutdated = !destInfo.Exists
|| srcInfo.LastWriteTime > destInfo.LastWriteTime
|| xsltInfo.LastWriteTime > destInfo.LastWriteTime;
if (destOutdated) {
XmlReader xmlReader = CreateXmlReader(baseDir, srcFile);
XmlReader xslReader = CreateXmlReader(baseDir, xsltFile);
XmlWriter xmlWriter = CreateXmlWriter(destDir, destFile);
Log.WriteLine(LogPrefix + "Transforming into " + Path.GetFullPath(destDir));
// TODO: remove assignments from conditional statement (gs)
if (xmlReader != null && xslReader != null && xmlWriter != null) {
XslTransform xslt = new XslTransform();
XPathDocument xml = new XPathDocument(xmlReader);
Log.WriteLine(LogPrefix + "Loading stylesheet " + Path.GetFullPath(xsltPath));
try {
xslt.Load(xslReader);
} catch (XsltCompileException xce) {
throw new BuildException(xce.Message, xce);
} catch (Exception e) {
throw new BuildException(e.Message, e);
}
Log.WriteLine(LogPrefix + "Processing " + Path.GetFullPath(srcPath) + " to " + Path.GetFullPath(destPath));
try {
xslt.Transform(xml, null, xmlWriter);
} catch (Exception e) {
throw new BuildException(e.Message, e);
}
} else {
// not sure how to deal with this...
// TODO: remove this statement or do something useful (gs)
// Can this condition occur? I would have thought
// that an exception would be thrown. (gs)
}
}
}
}
}
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