From 1da04aa097db78c7474877049334c2c07b33bda1 Mon Sep 17 00:00:00 2001
From: David Sommerseth <davids@redhat.com>
Date: Thu, 2 Apr 2009 19:26:56 +0200
Subject: Added dmixml.[ch] - helper function for generating XML nodes

---
 src/dmixml.c | 140 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 src/dmixml.h |  32 ++++++++++++++
 2 files changed, 172 insertions(+)
 create mode 100644 src/dmixml.c
 create mode 100644 src/dmixml.h

(limited to 'src')

diff --git a/src/dmixml.c b/src/dmixml.c
new file mode 100644
index 0000000..434b2e7
--- /dev/null
+++ b/src/dmixml.c
@@ -0,0 +1,140 @@
+/*
+ *   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
+ *
+ *   For the avoidance of doubt the "preferred form" of this code is one which
+ *   is in an open unpatent encumbered format. Where cryptographic key signing
+ *   forms part of the process of creating an executable the information
+ *   including keys needed to generate an equivalently functional executable
+ *   are deemed to be part of the source code.
+ */
+
+#include <string.h>
+#include <stdarg.h>
+#include <assert.h>
+
+#include <libxml/tree.h>
+#include <libxml/xmlstring.h>
+
+// Internal function for dmixml_* functions ... builds up a variable xmlChar* string
+xmlChar *dmixml_buildstr(size_t len, const char *fmt, va_list ap) {
+        xmlChar *ret = NULL, *xmlfmt = NULL;
+
+        ret = (xmlChar *) malloc(len+2);
+        assert( ret != NULL );
+        memset(ret, 0, len+2);
+
+        xmlfmt = xmlCharStrdup(fmt);
+        assert( xmlfmt != NULL );
+
+        xmlStrVPrintf(ret, len, xmlfmt, ap);
+        free(xmlfmt);
+
+        return ret;
+}
+
+
+// Adds an XML property/attribute to the given XML node
+//
+//  xmldata_n = "<test/>";
+//  dmixml_AddAttribute(xmldata_n, "value", "1234");
+//  gives: xmldata_n = "<test value="1234/>"
+//
+
+xmlAttr *dmixml_AddAttribute(xmlNode *node, const char *atrname, const char *fmt, ...)
+{
+        xmlChar *val_s = NULL, *atrname_s = NULL;
+        xmlAttr *res = NULL;
+        va_list ap;
+
+        if( (node == NULL) || (atrname == NULL) || (fmt == NULL) ) {
+                return NULL;
+        }
+
+        atrname_s = xmlCharStrdup(atrname);
+        assert( atrname_s != NULL );
+
+        va_start(ap, fmt);
+        val_s = dmixml_buildstr(2048, fmt, ap);
+        va_end(ap);
+
+        res = xmlNewProp(node, atrname_s, val_s);
+
+        free(atrname_s);
+        free(val_s);
+
+        assert( res != NULL );
+        return res;
+}
+
+
+// Adds a new XML tag to the current node with the given tag name and value.
+//
+//  xmldata_n = "<test>";
+//  dmixml_AddTextChild(xmldata_n, "sublevel1", "value");
+//  gives: xmldata_n = "<test><sublevel1>value</sublevel1></test>"
+//
+xmlNode *dmixml_AddTextChild(xmlNode *node, const char *tagname, const char *fmt, ...)
+{
+        xmlChar *val_s = NULL, *tagname_s = NULL;
+        xmlNode *res = NULL;
+        va_list ap;
+
+        if( (node == NULL) || (tagname == NULL) || (fmt == NULL) ) {
+                return NULL;
+        }
+
+        tagname_s = xmlCharStrdup(tagname);
+        assert( tagname_s != NULL );
+
+        va_start(ap, fmt);
+        val_s = dmixml_buildstr(2048, fmt, ap);
+        va_end(ap);
+
+        res = xmlNewTextChild(node, NULL, tagname_s, val_s);
+
+        free(tagname_s);
+        free(val_s);
+
+        assert( res != NULL );
+        return res;
+}
+
+// Adds a text node child to the current XML node
+//
+//  xmldata_n = "<testdata/>;
+//  dmixml_AddTextContent(xmldata_n, "some data value");
+//  gives: xmldata_n = "<testdata>some data value</testdata>"
+//
+xmlNode *dmixml_AddTextContent(xmlNode *node, const char *fmt, ...)
+{
+        xmlChar *val_s = NULL;
+        xmlNode *res = NULL;
+        va_list ap;
+
+        if( (node == NULL) || (fmt == NULL) ) {
+                return NULL;
+        }
+
+        va_start(ap, fmt);
+        val_s = dmixml_buildstr(2048, fmt, ap);
+        va_end(ap);
+
+        res = xmlAddChild(node, xmlNewText(val_s));
+        free(val_s);
+
+        assert( res != NULL );
+        return res;
+}
+
diff --git a/src/dmixml.h b/src/dmixml.h
new file mode 100644
index 0000000..d7d2716
--- /dev/null
+++ b/src/dmixml.h
@@ -0,0 +1,32 @@
+/*
+ *   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
+ *
+ *   For the avoidance of doubt the "preferred form" of this code is one which
+ *   is in an open unpatent encumbered format. Where cryptographic key signing
+ *   forms part of the process of creating an executable the information
+ *   including keys needed to generate an equivalently functional executable
+ *   are deemed to be part of the source code.
+ */
+
+#ifndef _XMLHELPER_H
+#define _XMLHELPER_H
+
+#include <stdarg.h>
+
+xmlAttrNode *dmixml_AddAttribute(xmlNode *node, const char *atrname, const char *fmt, ...);
+xmlNode *dmixml_AddTextChild(xmlNode *node, const char *tagname, const char *fmt, ...);
+xmlNode *dmixml_AddTextContent(xmlNode *node, const char *fmt, ...);
+
+#endif
-- 
cgit