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https://gitlab.gnome.org/GNOME/libxml2
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fc119e3290
xmlCleanupParser is dangerous and shouldn't be called in most cases. Being part of the examples led many people to use it incorrectly. xmlMemoryDump is an obsolete way to test for memory leaks.
115 lines
2.9 KiB
C
115 lines
2.9 KiB
C
/**
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* section: xmlReader
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* synopsis: Parse multiple XML files reusing an xmlReader
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* purpose: Demonstrate the use of xmlReaderForFile() and
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* xmlReaderNewFile to parse XML files while reusing the reader object
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* and parser context. (Note that the XMLReader functions require
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* libxml2 version later than 2.6.)
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* usage: reader4 <filename> [ filename ... ]
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* test: reader4 test1.xml test2.xml test3.xml > reader4.tmp && diff reader4.tmp $(srcdir)/reader4.res
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* author: Graham Bennett
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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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static void processDoc(xmlTextReaderPtr readerPtr) {
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int ret;
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xmlDocPtr docPtr;
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const xmlChar *URL;
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ret = xmlTextReaderRead(readerPtr);
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while (ret == 1) {
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ret = xmlTextReaderRead(readerPtr);
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}
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/*
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* One can obtain the document pointer to get interesting
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* information about the document like the URL, but one must also
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* be sure to clean it up at the end (see below).
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*/
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docPtr = xmlTextReaderCurrentDoc(readerPtr);
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if (NULL == docPtr) {
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fprintf(stderr, "failed to obtain document\n");
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return;
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}
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URL = docPtr->URL;
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if (NULL == URL) {
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fprintf(stderr, "Failed to obtain URL\n");
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}
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if (ret != 0) {
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fprintf(stderr, "%s: Failed to parse\n", URL);
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return;
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}
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printf("%s: Processed ok\n", (const char *)URL);
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}
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int main(int argc, char **argv) {
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xmlTextReaderPtr readerPtr;
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int i;
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xmlDocPtr docPtr;
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if (argc < 2)
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return(1);
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/*
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* this initialises 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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/*
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* Create a new reader for the first file and process the
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* document.
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*/
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readerPtr = xmlReaderForFile(argv[1], NULL, 0);
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if (NULL == readerPtr) {
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fprintf(stderr, "%s: failed to create reader\n", argv[1]);
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return(1);
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}
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processDoc(readerPtr);
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/*
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* The reader can be reused for subsequent files.
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*/
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for (i=2; i < argc; ++i) {
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xmlReaderNewFile(readerPtr, argv[i], NULL, 0);
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if (NULL == readerPtr) {
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fprintf(stderr, "%s: failed to create reader\n", argv[i]);
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return(1);
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}
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processDoc(readerPtr);
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}
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/*
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* Since we've called xmlTextReaderCurrentDoc, we now have to
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* clean up after ourselves. We only have to do this the last
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* time, because xmlReaderNewFile calls xmlCtxtReset which takes
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* care of it.
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*/
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docPtr = xmlTextReaderCurrentDoc(readerPtr);
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if (docPtr != NULL)
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xmlFreeDoc(docPtr);
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/*
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* Clean up the reader.
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*/
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xmlFreeTextReader(readerPtr);
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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, "xmlReader support not compiled in\n");
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return(0);
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}
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#endif
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