1 /* This is simple demonstration of how to use expat. This program 2 reads an XML document from standard input and writes a line with 3 the name of each element to standard output indenting child 4 elements by one tab stop more than their parent element. 5 */ 6 7 #include <stdio.h> 8 #include "expat.h" 9 10 static void 11 startElement(void *userData, const char *name, const char **atts) 12 { 13 int i; 14 int *depthPtr = userData; 15 for (i = 0; i < *depthPtr; i++) 16 putchar('\t'); 17 puts(name); 18 *depthPtr += 1; 19 } 20 21 static void 22 endElement(void *userData, const char *name) 23 { 24 int *depthPtr = userData; 25 *depthPtr -= 1; 26 } 27 28 int 29 main(int argc, char *argv[]) 30 { 31 char buf[BUFSIZ]; 32 XML_Parser parser = XML_ParserCreate(NULL); 33 int done; 34 int depth = 0; 35 XML_SetUserData(parser, &depth); 36 XML_SetElementHandler(parser, startElement, endElement); 37 do { 38 size_t len = fread(buf, 1, sizeof(buf), stdin); 39 done = len < sizeof(buf); 40 if (XML_Parse(parser, buf, len, done) == XML_STATUS_ERROR) { 41 fprintf(stderr, 42 "%s at line %d\n", 43 XML_ErrorString(XML_GetErrorCode(parser)), 44 XML_GetCurrentLineNumber(parser)); 45 return 1; 46 } 47 } while (!done); 48 XML_ParserFree(parser); 49 return 0; 50 } 51