Function xmlNewInputFromFile

ThirdParty/libxml2/vtklibxml2/parserInternals.c:2058–2104

* xmlNewInputFromFile: * @ctxt: an XML parser context * @filename: the filename to use as entity * * Create a new input stream based on a file or an URL. * * Returns the new input stream or NULL in case of error */

 * Returns the new input stream or NULL in case of error
 */
xmlParserInputPtr
xmlNewInputFromFile(xmlParserCtxtPtr ctxt, const char *filename) {
    xmlParserInputBufferPtr buf;
    xmlParserInputPtr inputStream;
    const xmlChar *URI;
    xmlChar *canonic;
    int code;

    if ((ctxt == NULL) || (filename == NULL))
        return(NULL);

    code = xmlParserInputBufferCreateFilenameSafe(filename,
                                                  XML_CHAR_ENCODING_NONE, &buf);
    if (buf == NULL) {
        xmlCtxtErrIO(ctxt, code, filename);
	return(NULL);
    }

    inputStream = xmlNewInputStream(ctxt);
    if (inputStream == NULL) {
	xmlFreeParserInputBuffer(buf);
	return(NULL);
    }

    inputStream->buf = buf;
    inputStream = xmlCheckHTTPInput(ctxt, inputStream);
    if (inputStream == NULL)
        return(NULL);

    if (inputStream->filename == NULL)
	URI = (xmlChar *) filename;
    else
	URI = (xmlChar *) inputStream->filename;
    canonic = xmlCanonicPath(URI);
    if (canonic == NULL) {
        xmlCtxtErrMemory(ctxt);
        xmlFreeInputStream(inputStream);
        return(NULL);
    }
    if (inputStream->filename != NULL)
        xmlFree((char *) inputStream->filename);
    inputStream->filename = (char *) canonic;

    xmlBufResetInput(inputStream->buf->buffer, inputStream);

    return(inputStream);
}

/**
 * xmlDefaultExternalEntityLoader: