sfeed

simple feed reader - forked from git.codemadness.org/sfeed
git clone git://src.gearsix.net/sfeed
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sfeed_opml_import.c (2200B)

      1 #include <stdio.h>
      2 #include <strings.h>
      3 
      4 #include "util.h"
      5 #include "xml.h"
      6 
      7 static XMLParser parser; /* XML parser state */
      8 static char text[256], title[256], xmlurl[2048];
      9 
     10 static void
     11 printsafe(const char *s)
     12 {
     13 	for (; *s; s++) {
     14 		if (ISCNTRL((unsigned char)*s))
     15 			continue;
     16 		else if (*s == '\\')
     17 			fputs("\\\\", stdout);
     18 		else if (*s == '\'')
     19 			fputs("'\\''", stdout);
     20 		else
     21 			putchar(*s);
     22 	}
     23 }
     24 
     25 static void
     26 xmltagstart(XMLParser *p, const char *t, size_t tl)
     27 {
     28 	text[0] = title[0] = xmlurl[0] = '\0';
     29 }
     30 
     31 static void
     32 xmltagend(XMLParser *p, const char *t, size_t tl, int isshort)
     33 {
     34 	if (strcasecmp(t, "outline"))
     35 		return;
     36 
     37 	if (xmlurl[0]) {
     38 		fputs("\tfeed '", stdout);
     39 		/* prefer title over text attribute */
     40 		if (title[0])
     41 			printsafe(title);
     42 		else if (text[0])
     43 			printsafe(text);
     44 		else
     45 			fputs("unnamed", stdout);
     46 		fputs("' '", stdout);
     47 		printsafe(xmlurl);
     48 		fputs("'\n", stdout);
     49 	}
     50 
     51 	text[0] = title[0] = xmlurl[0] = '\0';
     52 }
     53 
     54 static void
     55 xmlattr(XMLParser *p, const char *t, size_t tl, const char *n, size_t nl,
     56 	const char *v, size_t vl)
     57 {
     58 	if (strcasecmp(t, "outline"))
     59 		return;
     60 
     61 	if (!strcasecmp(n, "text"))
     62 		strlcat(text, v, sizeof(text));
     63 	else if (!strcasecmp(n, "title"))
     64 		strlcat(title, v, sizeof(title));
     65 	else if (!strcasecmp(n, "xmlurl"))
     66 		strlcat(xmlurl, v, sizeof(xmlurl));
     67 }
     68 
     69 static void
     70 xmlattrentity(XMLParser *p, const char *t, size_t tl, const char *n, size_t nl,
     71 	const char *v, size_t vl)
     72 {
     73 	char buf[16];
     74 	int len;
     75 
     76 	if ((len = xml_entitytostr(v, buf, sizeof(buf))) > 0)
     77 		xmlattr(p, t, tl, n, nl, buf, len);
     78 	else
     79 		xmlattr(p, t, tl, n, nl, v, vl);
     80 }
     81 
     82 int
     83 main(void)
     84 {
     85 	if (pledge("stdio", NULL) == -1)
     86 		err(1, "pledge");
     87 
     88 	parser.xmlattr = xmlattr;
     89 	parser.xmlattrentity = xmlattrentity;
     90 	parser.xmltagstart = xmltagstart;
     91 	parser.xmltagend = xmltagend;
     92 
     93 	fputs(
     94 	    "#sfeedpath=\"$HOME/.sfeed/feeds\"\n"
     95 	    "\n"
     96 	    "# list of feeds to fetch:\n"
     97 	    "feeds() {\n"
     98 	    "	# feed <name> <feedurl> [basesiteurl] [encoding]\n", stdout);
     99 	/* NOTE: getnext is defined in xml.h for inline optimization */
    100 	xml_parse(&parser);
    101 	fputs("}\n", stdout);
    102 
    103 	checkfileerror(stdin, "<stdin>", 'r');
    104 	checkfileerror(stdout, "<stdout>", 'w');
    105 
    106 	return 0;
    107 }