/**
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* section: xmlReader
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* synopsis: Parse and validate an XML file with an xmlReader
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* purpose: Demonstrate the use of xmlReaderForFile() to parse an XML file
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* validating the content in the process and activating options
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* like entities substitution, and DTD attributes defaulting.
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* (Note that the XMLReader functions require libxml2 version later
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* than 2.6.)
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* usage: reader2 <valid_xml_filename>
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* test: reader2 test2.xml > reader1.tmp && diff reader1.tmp $(srcdir)/reader1.res
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* author: Daniel Veillard
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* copy: see Copyright for the status of this software.
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*/
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#include <stdio.h>
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#include <libxml/xmlreader.h>
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#ifdef LIBXML_READER_ENABLED
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/**
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* processNode:
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* @reader: the xmlReader
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*
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* Dump information about the current node
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*/
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static void
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processNode(xmlTextReaderPtr reader) {
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const xmlChar *name, *value;
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name = xmlTextReaderConstName(reader);
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if (name == NULL)
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name = BAD_CAST "--";
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value = xmlTextReaderConstValue(reader);
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printf("%d %d %s %d %d",
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xmlTextReaderDepth(reader),
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xmlTextReaderNodeType(reader),
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name,
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xmlTextReaderIsEmptyElement(reader),
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xmlTextReaderHasValue(reader));
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if (value == NULL)
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printf("\n");
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else {
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if (xmlStrlen(value) > 40)
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printf(" %.40s...\n", value);
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else
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printf(" %s\n", value);
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}
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}
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/**
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* streamFile:
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* @filename: the file name to parse
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*
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* Parse, validate and print information about an XML file.
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*/
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static void
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streamFile(const char *filename) {
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xmlTextReaderPtr reader;
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int ret;
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/*
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* Pass some special parsing options to activate DTD attribute defaulting,
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* entities substitution and DTD validation
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*/
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reader = xmlReaderForFile(filename, NULL,
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XML_PARSE_DTDATTR | /* default DTD attributes */
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XML_PARSE_NOENT | /* substitute entities */
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XML_PARSE_DTDVALID); /* validate with the DTD */
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if (reader != NULL) {
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ret = xmlTextReaderRead(reader);
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while (ret == 1) {
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processNode(reader);
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ret = xmlTextReaderRead(reader);
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}
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/*
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* Once the document has been fully parsed check the validation results
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*/
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if (xmlTextReaderIsValid(reader) != 1) {
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fprintf(stderr, "Document %s does not validate\n", filename);
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}
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xmlFreeTextReader(reader);
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if (ret != 0) {
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fprintf(stderr, "%s : failed to parse\n", filename);
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}
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} else {
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fprintf(stderr, "Unable to open %s\n", filename);
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}
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}
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int main(int argc, char **argv) {
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if (argc != 2)
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return(1);
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/*
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* this initialize the library and check potential ABI mismatches
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* between the version it was compiled for and the actual shared
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* library used.
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*/
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LIBXML_TEST_VERSION
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streamFile(argv[1]);
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/*
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* Cleanup function for the XML library.
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*/
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xmlCleanupParser();
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/*
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* this is to debug memory for regression tests
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*/
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xmlMemoryDump();
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return(0);
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}
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#else
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int main(void) {
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fprintf(stderr, "XInclude support not compiled in\n");
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exit(1);
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}
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#endif
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