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	sfeed_opml_import.c - sfeed - RSS and Atom parser
	git clone git://git.codemadness.org/sfeed
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	sfeed_opml_import.c (2199B)
	---
	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, siz…
	71 const char *v, size_t vl)
	72 {
	73 char buf[8];
	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"…
	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 }