sfeed_xmlenc.c (raw) (1335B)
1 #include <stdio.h> 2 #include <stdlib.h> 3 #include <strings.h> 4 5 #include "util.h" 6 #include "xml.h" 7 8 static XMLParser parser; 9 static int tags; 10 11 static void 12 xmltagstart(XMLParser *p, const char *t, size_t tl) 13 { 14 /* optimization: try to find a processing instruction only at the 15 start of the data at the first few starting tags. */ 16 if (tags++ > 3) 17 exit(0); 18 } 19 20 static void 21 xmlattr(XMLParser *p, const char *t, size_t tl, const char *n, size_t nl, 22 const char *v, size_t vl) 23 { 24 if (strcasecmp(t, "?xml") || strcasecmp(n, "encoding")) 25 return; 26 27 for (; *v; v++) { 28 if (ISALPHA((unsigned char)*v) || 29 ISDIGIT((unsigned char)*v) || 30 *v == '.' || *v == ':' || *v == '-' || *v == '_') 31 putchar(TOLOWER((unsigned char)*v)); 32 } 33 } 34 35 static void 36 xmlattrend(XMLParser *p, const char *t, size_t tl, const char *n, size_t nl) 37 { 38 if (strcasecmp(t, "?xml") || strcasecmp(n, "encoding")) 39 return; 40 putchar('\n'); 41 exit(0); 42 } 43 44 int 45 main(void) 46 { 47 if (pledge("stdio", NULL) == -1) 48 err(1, "pledge"); 49 50 parser.xmlattr = xmlattr; 51 parser.xmlattrentity = xmlattr; /* no entity conversion */ 52 parser.xmlattrend = xmlattrend; 53 parser.xmltagstart = xmltagstart; 54 55 /* NOTE: getnext is defined in xml.h for inline optimization */ 56 xml_parse(&parser); 57 58 checkfileerror(stdin, "<stdin>", 'r'); 59 checkfileerror(stdout, "<stdout>", 'w'); 60 61 return 0; 62 }