Function xmlTextWriterStartPI

ThirdParty/libxml2/vtklibxml2/xmlwriter.c:2366–2452

* xmlTextWriterStartPI: * @writer: the xmlTextWriterPtr * @target: PI target * * Start an xml PI. * * Returns the bytes written (may be 0 because of buffering) or -1 in case of error */

 * Returns the bytes written (may be 0 because of buffering) or -1 in case of error
 */
int
xmlTextWriterStartPI(xmlTextWriterPtr writer, const xmlChar * target)
{
    int count;
    int sum;
    xmlLinkPtr lk;
    xmlTextWriterStackEntry *p;

    if ((writer == NULL) || (target == NULL) || (*target == '\0'))
        return -1;

    if (xmlStrcasecmp(target, (const xmlChar *) "xml") == 0) {
        xmlWriterErrMsg(writer, XML_ERR_INTERNAL_ERROR,
                        "xmlTextWriterStartPI : target name [Xx][Mm][Ll] is reserved for xml standardization!\n");
        return -1;
    }

    sum = 0;
    lk = xmlListFront(writer->nodes);
    if (lk != 0) {
        p = (xmlTextWriterStackEntry *) xmlLinkGetData(lk);
        if (p != 0) {
            switch (p->state) {
                case XML_TEXTWRITER_ATTRIBUTE:
                    count = xmlTextWriterEndAttribute(writer);
                    if (count < 0)
                        return -1;
                    sum += count;
                    /* fallthrough */
                case XML_TEXTWRITER_NAME:
                    /* Output namespace declarations */
                    count = xmlTextWriterOutputNSDecl(writer);
                    if (count < 0)
                        return -1;
                    sum += count;
                    count = xmlOutputBufferWriteString(writer->out, ">");
                    if (count < 0)
                        return -1;
                    sum += count;
                    p->state = XML_TEXTWRITER_TEXT;
                    break;
                case XML_TEXTWRITER_NONE:
                case XML_TEXTWRITER_TEXT:
                case XML_TEXTWRITER_DTD:
                    break;
                case XML_TEXTWRITER_PI:
                case XML_TEXTWRITER_PI_TEXT:
                    xmlWriterErrMsg(writer, XML_ERR_INTERNAL_ERROR,
                                    "xmlTextWriterStartPI : nested PI!\n");
                    return -1;
                default:
                    return -1;
            }
        }
    }

    p = (xmlTextWriterStackEntry *)
        xmlMalloc(sizeof(xmlTextWriterStackEntry));