From e9fb54b9a4df170aea617c19b3bcf999bc4323be Mon Sep 17 00:00:00 2001
From: Andrea Zagli <azagli@libero.it>
Date: Thu, 23 Jul 2020 11:33:44 +0200
Subject: [PATCH] Added example xml_filter.

---
 .gitignore            |   1 +
 examples/Makefile.am  |   3 +-
 examples/sample.xml   |   2 +
 examples/xml_filter.c | 102 ++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 107 insertions(+), 1 deletion(-)
 create mode 100644 examples/sample.xml
 create mode 100644 examples/xml_filter.c

diff --git a/.gitignore b/.gitignore
index 2a8ef05..6b02d96 100644
--- a/.gitignore
+++ b/.gitignore
@@ -51,6 +51,7 @@ Rules-quot
 *.exe
 *.csv
 examples/to_xml
+examples/xml_filter
 build/
 test-driver
 tests/generic
diff --git a/examples/Makefile.am b/examples/Makefile.am
index e617039..a735679 100644
--- a/examples/Makefile.am
+++ b/examples/Makefile.am
@@ -9,4 +9,5 @@ LIBS = $(ZAKUTILSJX_LIBS) \
 LDADD = $(top_builddir)/src/libzakutilsjsonxml.la
 
 noinst_PROGRAMS = \
-                  to_xml
+                  to_xml \
+                  xml_filter
diff --git a/examples/sample.xml b/examples/sample.xml
new file mode 100644
index 0000000..7340b63
--- /dev/null
+++ b/examples/sample.xml
@@ -0,0 +1,2 @@
+<?xml version="1.0"?>
+<objects><memb1>value1</memb1><memb2>value2</memb2><memb3><name>first</name><color>red</color></memb3><memb3><name>second</name><color>green</color><arr1><arr1_1>val1_1</arr1_1></arr1><arr1><arr1_2>val1_2</arr1_2><arr1_2_1>val1_2_1</arr1_2_1></arr1></memb3></objects>
diff --git a/examples/xml_filter.c b/examples/xml_filter.c
new file mode 100644
index 0000000..49e44d7
--- /dev/null
+++ b/examples/xml_filter.c
@@ -0,0 +1,102 @@
+/*
+ * Copyright (C) 2020 Andrea Zagli <azagli@libero.it>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <stdio.h>
+
+#include <glib/gprintf.h>
+
+#include "json.h"
+#include "xml.h"
+
+int
+main (int argc, char *argv[])
+{
+	xmlDoc *xdoc;
+
+	gchar *filter;
+
+	gboolean ok;
+
+	guint i;
+	int c;
+	gchar *data;
+
+	xmlNodeSet *xset;
+	xmlChar *keyword;
+
+	ok = FALSE;
+	if (argc == 3)
+		{
+			xdoc = xmlParseFile (argv[1]);
+			if (xdoc == NULL)
+				{
+					g_warning ("Unable to parse xml file «%s»",
+					           argv[1]);
+				}
+			else
+				{
+					ok = TRUE;
+				}
+
+			filter = argv[2];
+		}
+	else if (argc == 2)
+		{
+			/* stdin */
+			i = 0;
+			data = g_malloc (0);
+			while (EOF != (c = fgetc (stdin)))
+				{
+					i++;
+					data = g_realloc (data, i);
+					data[i - 1] = c;
+				}
+
+			xdoc = xmlParseMemory (data, i);
+			if (xdoc == NULL)
+				{
+					g_warning ("Unable to parse xml «%s»",
+					           data);
+				}
+			else
+				{
+					ok = TRUE;
+				}
+
+			filter = argv[1];
+		}
+
+	if (ok)
+		{
+			xset = zak_utils_xml_filter (xdoc, NULL, filter);
+
+			if (xset != NULL)
+				{
+					for (i = 0; i < xset->nodeNr; i++)
+						{
+							keyword = xmlNodeListGetString (xdoc, xset->nodeTab[i]->xmlChildrenNode, 1);
+							g_printf ("keyword: %s\n", keyword);
+							xmlFree (keyword);
+						}
+				}
+
+			xmlFreeDoc (xdoc);
+		}
+
+	return 0;
+}
-- 
2.49.0