C[omp]ute

From: andrew cooke <andrew@...>

Date: Tue, 28 Apr 2015 21:28:05 -0300

The following appears to work, but doesn't print "reading" so I have no idea
what it's doing...

Andrew


static int ioread(FILE *f, char * buf, int len) {
    fprintf(stderr, "reading\n");
    return(fread(buf, 1, len, f));
}

static void ioclose(FILE *f) {
    // you could close here, but i am using stdin
}

int read(FILE *in, xmlDocPtr *doc) {

    xmlParserCtxtPtr ctxt = NULL;

    if (!(ctxt = xmlCreateIOParserCtxt(NULL, NULL,
            (xmlInputReadCallback)ioread, (xmlInputCloseCallback)ioclose,
            in, XML_CHAR_ENCODING_UTF8))) {
        return -1;
    }

    if (!(*doc = xmlCtxtReadFd(ctxt, fileno(station), NULL, "utf8", 0))) {
        return -2;
    }

    // quck and dirty test
    xmlNodePtr root = xmlDocGetRootElement(*doc);
    int n = 0;
    xmlNodePtr child = root->children;
    xmlNodePtr curr;
    for (curr = child; curr; curr = curr->next)
        if (curr->type == XML_ELEMENT_NODE)
            n++;
    fprintf(stderr, "Root has %d children", n);

    if (ctxt) xmlFreeParserCtxt(ctxt);
    return 0;
}