starting work to fix the HTTP/XML parser integration. Daniel

* nanohttp.c xmlIO.c include/libxml/nanohttp.h: starting work
  to fix the HTTP/XML parser integration.
Daniel

ChangeLog

@@ -1,3 +1,8 @@
+Sat Oct 18 07:28:25 EDT 2003 Daniel Veillard <daniel@veillard.com>
+
+	* nanohttp.c xmlIO.c include/libxml/nanohttp.h: starting work
+	  to fix the HTTP/XML parser integration.
+
 Sat Oct 18 11:04:32 CEST 2003 Daniel Veillard <daniel@veillard.com>
 
 	* xmlreader.c include/libxml/xmlreader.h: added new APIs

include/libxml/nanohttp.h

@@ -52,6 +52,10 @@ XMLPUBFUN int XMLCALL
 	xmlNanoHTTPReturnCode	(void *ctx);
 XMLPUBFUN const char * XMLCALL 
 	xmlNanoHTTPAuthHeader	(void *ctx);
+XMLPUBFUN const char * XMLCALL
+	xmlNanoHTTPRedir	(void * ctx);
+XMLPUBFUN const char * XMLCALL
+	xmlNanoHTTPEncoding	(void * ctx);
 XMLPUBFUN int XMLCALL	
 	xmlNanoHTTPRead		(void *ctx,
 				 void *dest,

nanohttp.c

@@ -149,6 +149,7 @@ typedef struct xmlNanoHTTPCtxt {
     char *contentType;	/* the MIME type for the input */
     char *location;	/* the new URL in case of redirect */
     char *authHeader;	/* contents of {WWW,Proxy}-Authenticate header */
+    char *encoding;	/* encoding extracted from the contentType */
 } xmlNanoHTTPCtxt, *xmlNanoHTTPCtxtPtr;
 
 static int initialized = 0;
@@ -528,6 +529,7 @@ xmlNanoHTTPFreeCtxt(xmlNanoHTTPCtxtPtr ctxt) {
     if (ctxt->out != NULL) xmlFree(ctxt->out);
     if (ctxt->in != NULL) xmlFree(ctxt->in);
     if (ctxt->contentType != NULL) xmlFree(ctxt->contentType);
+    if (ctxt->encoding != NULL) xmlFree(ctxt->encoding);
     if (ctxt->location != NULL) xmlFree(ctxt->location);
     if (ctxt->authHeader != NULL) xmlFree(ctxt->authHeader);
     ctxt->state = XML_NANO_HTTP_NONE;
@@ -1576,6 +1578,36 @@ xmlNanoHTTPContentLength( void * ctx ) {
     return ( ( ctxt == NULL ) ? -1 : ctxt->ContentLength );
 }
 
+/**
+ * xmlNanoHTTPRedir:
+ * @ctx:  the HTTP context
+ *
+ * Provides the specified redirection URL if available from the HTTP header.
+ *
+ * Return the specified redirection URL or NULL if not redirected.
+ */
+const char *
+xmlNanoHTTPRedir( void * ctx ) {
+    xmlNanoHTTPCtxtPtr	ctxt = ctx;
+
+    return ( ( ctxt == NULL ) ? NULL : ctxt->location );
+}
+
+/**
+ * xmlNanoHTTPEncoding:
+ * @ctx:  the HTTP context
+ *
+ * Provides the specified encoding if specified in the HTTP headers.
+ *
+ * Return the specified encoding or NULL if not available
+ */
+const char *
+xmlNanoHTTPEncoding( void * ctx ) {
+    xmlNanoHTTPCtxtPtr	ctxt = ctx;
+
+    return ( ( ctxt == NULL ) ? NULL : ctxt->encoding );
+}
+
 /**
  * xmlNanoHTTPFetchContent:
  * @ctx:  the HTTP context

xmlIO.c

@@ -2108,6 +2108,7 @@ xmlOutputBufferClose(xmlOutputBufferPtr out)
 xmlParserInputBufferPtr
 xmlParserInputBufferCreateFilename(const char *URI, xmlCharEncoding enc) {
     xmlParserInputBufferPtr ret;
+    int is_http = 0;
     int i = 0;
     void *context = NULL;
 
@@ -2125,11 +2126,14 @@ xmlParserInputBufferCreateFilename(const char *URI, xmlCharEncoding enc) {
 	    if ((xmlInputCallbackTable[i].matchcallback != NULL) &&
 		(xmlInputCallbackTable[i].matchcallback(URI) != 0)) {
 		context = xmlInputCallbackTable[i].opencallback(URI);
-		if (context != NULL)
+		if (context != NULL) {
+		    if (xmlInputCallbackTable[i].opencallback == xmlIOHTTPOpen)
+		        is_http = 1;
 		    break;
 		}
 	    }
 	}
+    }
     if (context == NULL) {
 	return(NULL);
     }
@@ -3080,6 +3084,22 @@ xmlDefaultExternalEntityLoader(const char *URL, const char *ID,
 	xmlLoaderErr(ctxt, "failed to load external entity \"%s\"\n",
 	             (const char *) resource);
     }
+    if ((ret->buf != NULL) && (ret->buf->readcallback == xmlIOHTTPRead)) {
+        const char *encoding;
+	const char *redir;
+
+	encoding = xmlNanoHTTPEncoding(ret->buf->context);
+	redir = xmlNanoHTTPRedir(ret->buf->context);
+	if (redir != NULL) {
+	    if (ret->filename != NULL)
+	        xmlFree((xmlChar *) ret->filename);
+	    if (ret->directory != NULL) {
+	        xmlFree((xmlChar *) ret->directory);
+		ret->directory = NULL;
+            }
+	    ret->filename = (char *) xmlStrdup((const xmlChar *)redir);
+	}
+    }
     if ((resource != NULL) && (resource != (xmlChar *) URL))
 	xmlFree(resource);
     return(ret);