LibXML2不支持中文补遗

由于对libxml2的不熟悉，发表了“LibXML2不支持中文”一文。经过不断的接触，发现LibXML2自身已经支持了中文编码.只是他的所有api处理的数据都是UTF-8类型的，所以只要在读入和写入数据时进行相应转换即可！而且libxml2已融合了iconv，以下是代码！flags标示是读入(0)还是写入(1)!已测试通过

uint8_t *convert(uint8_t *in, char *encoding, uint8_t flags)
{
    uint8_t *out;
    int ret, size, out_size, temp;
    xmlCharEncodingHandlerPtr handler;
    size = (int) strlen( (char*)in ) + 1;
    out_size = size * 2 - 1;
    out = (uint8_t *)malloc((size_t) out_size);
    if (out) {
        handler = xmlFindCharEncodingHandler(encoding);
        if (!handler) {
            free(out);
            out = NULL;
        }
    }
    if (out) {
        temp = size - 1;
        if ( flags ) {
            ret = handler->input(out, &out_size, in, &temp);
        }else {
            ret = handler->output(out, &out_size, in, &temp);
        }
        if (ret || temp - size + 1) {
            if (ret) {
                printf("conversion wasn't successful./n");
            } else {
                printf("conversion wasn't successful. converted: ");
            }
            free(out);
            out = NULL;
        } else {
            out =(uint8_t *) realloc(out, out_size + 1);
            out[out_size] = 0;  /*null terminating out */
        }
    } else {
        printf("no mem/n");
    }
    return (out);
}

int main(int argc, char **argv)
{
    uint8_t *content, *out, *in;
    xmlDocPtr doc;
    xmlNodePtr rootnode;
    char *encoding = "ISO-8859-1";
    //char *encoding = "utf-8";
    if (argc <= 1) {
        printf("Usage: %s content/n", argv[0]);
        return (0);
    }
    content = (uint8_t *)argv[1];

    out = convert(content, encoding, 1);
    in = convert( out, encoding, 0 );
    doc = xmlNewDoc( (xmlChar*)"1.0" );
    printf( "%s:%s/n", encoding, out  );
    printf( "%s:%s/n", encoding, in  );
    rootnode = xmlNewDocNode(doc, NULL, (const xmlChar *) "root", out);
    xmlDocSetRootElement(doc, rootnode);
    xmlSaveFormatFileEnc("-", doc, encoding, 1);
    free( out );
    free( in );
    return (1);
}