libexpat: a simple xml parser library, used by X11 and some ports.

1 files changed, 50 insertions, 0 deletions

diff --git a/lib/libexpat/examples/elements.c b/lib/libexpat/examples/elements.c
new file mode 100644
index 00000000000..4ed4da6a346
--- /dev/null
+++ b/lib/libexpat/examples/elements.c
@@ -0,0 +1,50 @@
+/* This is simple demonstration of how to use expat. This program
+   reads an XML document from standard input and writes a line with
+   the name of each element to standard output indenting child
+   elements by one tab stop more than their parent element.
+*/
+
+#include <stdio.h>
+#include "expat.h"
+
+static void
+startElement(void *userData, const char *name, const char **atts)
+{
+  int i;
+  int *depthPtr = userData;
+  for (i = 0; i < *depthPtr; i++)
+    putchar('\t');
+  puts(name);
+  *depthPtr += 1;
+}
+
+static void
+endElement(void *userData, const char *name)
+{
+  int *depthPtr = userData;
+  *depthPtr -= 1;
+}
+
+int
+main(int argc, char *argv[])
+{
+  char buf[BUFSIZ];
+  XML_Parser parser = XML_ParserCreate(NULL);
+  int done;
+  int depth = 0;
+  XML_SetUserData(parser, &depth);
+  XML_SetElementHandler(parser, startElement, endElement);
+  do {
+    size_t len = fread(buf, 1, sizeof(buf), stdin);
+    done = len < sizeof(buf);
+    if (XML_Parse(parser, buf, len, done) == XML_STATUS_ERROR) {
+      fprintf(stderr,
+              "%s at line %d\n",
+              XML_ErrorString(XML_GetErrorCode(parser)),
+              XML_GetCurrentLineNumber(parser));
+      return 1;
+    }
+  } while (!done);
+  XML_ParserFree(parser);
+  return 0;
+}