Return to reader1.c CVS log

Up to [ELWIX - Embedded LightWeight unIX -] / embedaddon / libxml2 / doc / examples

libxml2

    1: /**
    2:  * section: xmlReader
    3:  * synopsis: Parse an XML file with an xmlReader
    4:  * purpose: Demonstrate the use of xmlReaderForFile() to parse an XML file
    5:  *          and dump the informations about the nodes found in the process.
    6:  *          (Note that the XMLReader functions require libxml2 version later
    7:  *          than 2.6.)
    8:  * usage: reader1 <filename>
    9:  * test: reader1 test2.xml > reader1.tmp ; diff reader1.tmp reader1.res ; rm reader1.tmp
   10:  * author: Daniel Veillard
   11:  * copy: see Copyright for the status of this software.
   12:  */
   13: 
   14: #include <stdio.h>
   15: #include <libxml/xmlreader.h>
   16: 
   17: #ifdef LIBXML_READER_ENABLED
   18: 
   19: /**
   20:  * processNode:
   21:  * @reader: the xmlReader
   22:  *
   23:  * Dump information about the current node
   24:  */
   25: static void
   26: processNode(xmlTextReaderPtr reader) {
   27:     const xmlChar *name, *value;
   28: 
   29:     name = xmlTextReaderConstName(reader);
   30:     if (name == NULL)
   31: 	name = BAD_CAST "--";
   32: 
   33:     value = xmlTextReaderConstValue(reader);
   34: 
   35:     printf("%d %d %s %d %d", 
   36: 	    xmlTextReaderDepth(reader),
   37: 	    xmlTextReaderNodeType(reader),
   38: 	    name,
   39: 	    xmlTextReaderIsEmptyElement(reader),
   40: 	    xmlTextReaderHasValue(reader));
   41:     if (value == NULL)
   42: 	printf("\n");
   43:     else {
   44:         if (xmlStrlen(value) > 40)
   45:             printf(" %.40s...\n", value);
   46:         else
   47: 	    printf(" %s\n", value);
   48:     }
   49: }
   50: 
   51: /**
   52:  * streamFile:
   53:  * @filename: the file name to parse
   54:  *
   55:  * Parse and print information about an XML file.
   56:  */
   57: static void
   58: streamFile(const char *filename) {
   59:     xmlTextReaderPtr reader;
   60:     int ret;
   61: 
   62:     reader = xmlReaderForFile(filename, NULL, 0);
   63:     if (reader != NULL) {
   64:         ret = xmlTextReaderRead(reader);
   65:         while (ret == 1) {
   66:             processNode(reader);
   67:             ret = xmlTextReaderRead(reader);
   68:         }
   69:         xmlFreeTextReader(reader);
   70:         if (ret != 0) {
   71:             fprintf(stderr, "%s : failed to parse\n", filename);
   72:         }
   73:     } else {
   74:         fprintf(stderr, "Unable to open %s\n", filename);
   75:     }
   76: }
   77: 
   78: int main(int argc, char **argv) {
   79:     if (argc != 2)
   80:         return(1);
   81: 
   82:     /*
   83:      * this initialize the library and check potential ABI mismatches
   84:      * between the version it was compiled for and the actual shared
   85:      * library used.
   86:      */
   87:     LIBXML_TEST_VERSION
   88: 
   89:     streamFile(argv[1]);
   90: 
   91:     /*
   92:      * Cleanup function for the XML library.
   93:      */
   94:     xmlCleanupParser();
   95:     /*
   96:      * this is to debug memory for regression tests
   97:      */
   98:     xmlMemoryDump();
   99:     return(0);
  100: }
  101: 
  102: #else
  103: int main(void) {
  104:     fprintf(stderr, "XInclude support not compiled in\n");
  105:     exit(1);
  106: }
  107: #endif