#include <stdio.h>
#include <libxml/xmlreader.h>
#if defined(LIBXML_READER_ENABLED) && defined(LIBXML_PATTERN_ENABLED)
static xmlDocPtr
extractFile(const char *filename, const xmlChar *pattern) {
xmlDocPtr doc;
xmlTextReaderPtr reader;
int ret;
reader = xmlReaderForFile(filename, NULL, 0);
if (reader != NULL) {
if (xmlTextReaderPreservePattern(reader, pattern, NULL) < 0) {
fprintf(stderr, "%s : failed add preserve pattern %s\n",
filename, (const char *) pattern);
}
ret = xmlTextReaderRead(reader);
while (ret == 1) {
ret = xmlTextReaderRead(reader);
}
if (ret != 0) {
fprintf(stderr, "%s : failed to parse\n", filename);
xmlFreeTextReader(reader);
return(NULL);
}
doc = xmlTextReaderCurrentDoc(reader);
xmlFreeTextReader(reader);
} else {
fprintf(stderr, "Unable to open %s\n", filename);
return(NULL);
}
return(doc);
}
int main(int argc, char **argv) {
const char *filename = "test3.xml";
const char *pattern = "preserved";
xmlDocPtr doc;
if (argc == 3) {
filename = argv[1];
pattern = argv[2];
}
LIBXML_TEST_VERSION
doc = extractFile(filename, (const xmlChar *) pattern);
if (doc != NULL) {
xmlDocDump(stdout, doc);
xmlFreeDoc(doc);
}
xmlCleanupParser();
xmlMemoryDump();
return(0);
}
#else
int main(void) {
fprintf(stderr, "Reader or Pattern support not compiled in\n");
exit(1);
}
#endif