1 files changed, 220 insertions, 0 deletions
diff --git a/src/io/xsltstream.cpp b/src/io/xsltstream.cpp
new file mode 100644
index 000000000..71619a51e
--- /dev/null
+++ b/src/io/xsltstream.cpp
@@ -0,0 +1,220 @@
+/**
+ * XSL Transforming input and output classes
+ *
+ * Authors:
+ *   Bob Jamison <rjamison@titan.com>
+ *
+ * Copyright (C) 2004 Inkscape.org
+ *
+ * Released under GNU GPL, read the file 'COPYING' for more information
+ */
+
+
+#include "xsltstream.h"
+#include "stringstream.h"
+#include <libxslt/transform.h>
+
+
+
+
+namespace Inkscape
+{
+namespace IO
+{
+
+//#########################################################################
+//# X S L T    S T Y L E S H E E T
+//#########################################################################
+/**
+ *
+ */ 
+XsltStyleSheet::XsltStyleSheet(InputStream &xsltSource) throw (StreamException)
+{
+    StringOutputStream outs;
+    pipeStream(xsltSource, outs);
+    std::string strBuf = outs.getString().raw();
+    xmlDocPtr doc = xmlParseMemory(strBuf.c_str(), strBuf.size());
+    stylesheet = xsltParseStylesheetDoc(doc);
+    //xmlFreeDoc(doc);
+}
+
+/**
+ *
+ */ 
+XsltStyleSheet::~XsltStyleSheet()
+{
+    xsltFreeStylesheet(stylesheet);
+}
+
+
+
+//#########################################################################
+//# X S L T    I N P U T    S T R E A M
+//#########################################################################
+
+
+/**
+ *
+ */ 
+XsltInputStream::XsltInputStream(InputStream &xmlSource, XsltStyleSheet &sheet)
+                        throw (StreamException)
+                        : BasicInputStream(xmlSource), stylesheet(sheet)
+{
+    //Load the data
+    StringOutputStream outs;
+    pipeStream(source, outs);
+    std::string strBuf = outs.getString().raw();
+    
+    //Do the processing
+    const char *params[1];
+    params[0] = NULL;
+    xmlDocPtr srcDoc = xmlParseMemory(strBuf.c_str(), strBuf.size());
+    xmlDocPtr resDoc = xsltApplyStylesheet(stylesheet.stylesheet, srcDoc, params);
+    xmlDocDumpFormatMemory(resDoc, &outbuf, &outsize, 1);
+    outpos = 0;
+        
+    //Free our mem
+    xmlFreeDoc(resDoc);
+    xmlFreeDoc(srcDoc);
+}
+
+/**
+ *
+ */ 
+XsltInputStream::~XsltInputStream() throw (StreamException)
+{
+    xmlFree(outbuf);
+}
+
+/**
+ * Returns the number of bytes that can be read (or skipped over) from
+ * this input stream without blocking by the next caller of a method for
+ * this input stream.
+ */ 
+int XsltInputStream::available() throw (StreamException)
+{
+    return outsize - outpos;
+}
+
+    
+/**
+ *  Closes this input stream and releases any system resources
+ *  associated with the stream.
+ */ 
+void XsltInputStream::close() throw (StreamException)
+{
+    closed = true;
+}
+    
+/**
+ * Reads the next byte of data from the input stream.  -1 if EOF
+ */ 
+int XsltInputStream::get() throw (StreamException)
+{
+    if (closed)
+        return -1;
+    if (outpos >= outsize)
+        return -1;
+    int ch = (int) outbuf[outpos++];
+    return ch;
+}
+   
+
+
+
+
+
+//#########################################################################
+//#  X S L T     O U T P U T    S T R E A M
+//#########################################################################
+
+/**
+ *
+ */ 
+XsltOutputStream::XsltOutputStream(OutputStream &dest, XsltStyleSheet &sheet)
+                     throw (StreamException)
+                     : BasicOutputStream(dest), stylesheet(sheet)
+{
+    flushed = false;
+}
+
+/**
+ *
+ */ 
+XsltOutputStream::~XsltOutputStream() throw (StreamException)
+{
+    //do not automatically close
+}
+
+/**
+ * Closes this output stream and releases any system resources
+ * associated with this stream.
+ */ 
+void XsltOutputStream::close() throw (StreamException)
+{
+    flush();
+    destination.close();
+}
+    
+/**
+ *  Flushes this output stream and forces any buffered output
+ *  bytes to be written out.
+ */ 
+void XsltOutputStream::flush() throw (StreamException)
+{
+    if (flushed)
+        {
+        destination.flush();
+        return;
+        }
+        
+    //Do the processing
+    xmlChar *resbuf;
+    int resSize;
+    const char *params[1];
+    params[0] = NULL;
+    xmlDocPtr srcDoc = xmlParseMemory(outbuf.raw().c_str(), outbuf.size());
+    xmlDocPtr resDoc = xsltApplyStylesheet(stylesheet.stylesheet, srcDoc, params);
+    xmlDocDumpFormatMemory(resDoc, &resbuf, &resSize, 1);
+    /*
+    xmlErrorPtr err = xmlGetLastError();
+    if (err)
+        {
+        throw StreamException(err->message);
+        }
+    */
+
+    for (int i=0 ; i<resSize ; i++)
+        {
+        char ch = resbuf[i];
+        destination.put(ch);
+        }
+        
+    //Free our mem
+    xmlFree(resbuf);
+    xmlFreeDoc(resDoc);
+    xmlFreeDoc(srcDoc);
+    destination.flush();
+    flushed = true;
+}
+    
+/**
+ * Writes the specified byte to this output stream.
+ */ 
+void XsltOutputStream::put(int ch) throw (StreamException)
+{
+    gunichar uch = (gunichar) ch;
+    outbuf.push_back(uch);
+}
+
+
+
+
+
+} // namespace IO
+} // namespace Inkscape
+
+
+//#########################################################################
+//# E N D    O F    F I L E
+//#########################################################################