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authorHiltjo Posthuma <hiltjo@codemadness.org>2013-05-20 19:35:49 +0200
committerHiltjo Posthuma <hiltjo@codemadness.org>2013-05-20 19:35:49 +0200
commit9fbd552aa0eb2cc2a31990851cbb0e9268da796e (patch)
tree920d26d2cb635d8ebeb6bceeeb6b840635f5933b
parent3589cf3db4b783e84d54b68d8a8096f92cc552fb (diff)
sfeed_opml_import: use own XML parser
Signed-off-by: Hiltjo Posthuma <hiltjo@codemadness.org>
-rw-r--r--sfeed_opml_import.c102
1 files changed, 47 insertions, 55 deletions
diff --git a/sfeed_opml_import.c b/sfeed_opml_import.c
index 7b5839b..486435d 100644
--- a/sfeed_opml_import.c
+++ b/sfeed_opml_import.c
@@ -1,74 +1,64 @@
/* convert an opml file to sfeedrc file */
#include <stdio.h>
-#include <string.h>
#include <stdlib.h>
+#include <string.h>
#include <strings.h>
-#include <expat.h> /* libexpat */
+#include "xml.h"
+#include "compat.h"
-XML_Parser parser; /* expat XML parser state */
+XMLParser parser; /* XML parser state */
+char *feedurl = NULL, *feedname = NULL, *basesiteurl = NULL;
-char * /* search for attr value by attr name in attributes list */
-getattrvalue(const char **atts, const char *name) {
- const char **attr = NULL, *key, *value;
- if(!atts || !(*atts))
- return NULL;
- for(attr = atts; *attr; ) {
- key = *(attr++);
- value = *(attr++);
- if(key && value && !strcasecmp(key, name))
- return (char *)value;
- }
- return NULL;
+int
+istag(const char *s1, const char *s2) {
+ return !xstrcasecmp(s1, s2);
}
-void XMLCALL
-xml_handler_start_element(void *data, const char *name, const char **atts) {
- char *feedurl = NULL, *feedname = NULL, *basesiteurl = NULL;
+int
+isattr(const char *s1, const char *s2) {
+ return !xstrcasecmp(s1, s2);
+}
- if(!strcasecmp(name, "outline")) {
- if(!(feedname = getattrvalue(atts, "text")) &&
- !(feedname = getattrvalue(atts, "title")))
- feedname = "unnamed";
- if(!(basesiteurl = getattrvalue(atts, "htmlurl")))
- basesiteurl = "";
- if(!(feedurl = getattrvalue(atts, "xmlurl")))
- feedurl = "";
- printf("\tfeed \"%s\" \"%s\" \"%s\"\n", feedname, feedurl, basesiteurl);
+void
+xml_handler_start_element(XMLParser *p, const char *tag, size_t taglen) {
+ if(istag(tag, "outline")) {
+ feedurl = NULL;
+ feedname = NULL;
+ basesiteurl = NULL;
}
}
-void XMLCALL
-xml_handler_end_element(void *data, const char *name) {
+void
+xml_handler_end_element(XMLParser *p, const char *tag, size_t taglen, int isshort) {
+ if(istag(tag, "outline")) {
+ printf("\tfeed \"%s\" \"%s\" \"%s\"\n", feedname ? feedname : "unnamed",
+ feedurl ? feedurl : "", basesiteurl ? basesiteurl : "");
+ }
}
-int /* parse XML from stream using setup parser, return 1 on success, 0 on failure. */
-xml_parse_stream(XML_Parser parser, FILE *fp) {
- char buffer[BUFSIZ];
- int done = 0, len = 0;
-
- while(!feof(fp)) {
- len = fread(buffer, 1, sizeof(buffer), fp);
- done = (feof(fp) || ferror(fp));
- if(XML_Parse(parser, buffer, len, done) == XML_STATUS_ERROR && (len > 0)) {
- if(XML_GetErrorCode(parser) == XML_ERROR_NO_ELEMENTS)
- return 1; /* Ignore "no elements found" / empty document as an error */
- fprintf(stderr, "sfeed_opml_import: error parsing xml %s at line %lu column %lu\n",
- XML_ErrorString(XML_GetErrorCode(parser)), (unsigned long)XML_GetCurrentLineNumber(parser),
- (unsigned long)XML_GetCurrentColumnNumber(parser));
- return 0;
+void
+xml_handler_attr(XMLParser *p, const char *tag, size_t taglen, const char *name, size_t namelen, const char *value, size_t valuelen) {
+ if(istag(tag, "outline")) {
+ if(isattr(name, "text") || isattr(name, "title")) {
+ free(feedname);
+ feedname = xstrdup(value);
+ } else if(isattr(name, "htmlurl")) {
+ free(basesiteurl);
+ basesiteurl = xstrdup(value);
+ } else if(isattr(name, "xmlurl")) {
+ free(feedurl);
+ feedurl = xstrdup(value);
}
- } while(!done);
- return 1;
+ }
}
int main(void) {
- int status;
+ xmlparser_init(&parser);
- if(!(parser = XML_ParserCreate("UTF-8"))) {
- fputs("sfeed_opml_import: can't create parser", stderr);
- exit(EXIT_FAILURE);
- }
- XML_SetElementHandler(parser, xml_handler_start_element, xml_handler_end_element);
+ parser.xmltagstart = xml_handler_start_element;
+ parser.xmltagend = xml_handler_end_element;
+ parser.xmlattr = xml_handler_attr;
+ parser.fp = stdin;
fputs(
"# paths\n"
@@ -80,10 +70,12 @@ int main(void) {
"# list of feeds to fetch:\n"
"feeds() {\n"
" # feed <name> <url> [encoding]\n", stdout);
- status = xml_parse_stream(parser, stdin);
+ xmlparser_parse(&parser);
fputs("}\n", stdout);
- XML_ParserFree(parser);
+ free(feedurl);
+ free(feedname);
+ free(basesiteurl);
- return status ? EXIT_SUCCESS : EXIT_FAILURE;
+ return EXIT_SUCCESS;
}