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Dear all, I need some help in writing to a buffer
and reading from that buffer this is part of the code I use[2], in the end of
this fist part this code writes do a document, in my application we can’t
write files (cpu & time restriction), we intent to create a buffer to be
sent to other clients. I’m rending from a file like the code bellow [2] [1]________________________________________________________________________________________________________________________________ /** *
refbox_xml_msg_creat: *
@file: the output file * *
test the xmlWriter interface when writing to memory */ void refbox_xml_msg_creat(const char *file,
refstatic *ref_msg_gen) {
int rc;
xmlTextWriterPtr writer;
xmlBufferPtr buf;
FILE *fp;
/* Create a new XML buffer, to which the XML document will be
* written */
buf = xmlBufferCreate();
if (buf == NULL) {
printf("refbox_xml_msg_creat: Error creating the xml
buffer\n");
return;
}
/* Create a new XmlWriter for memory, with no compression.
* Remark: there is no compression for this kind of xmlTextWriter */ writer = xmlNewTextWriterMemory(buf, 0);
if (writer == NULL) {
printf("refbox_xml_msg_creat: Error creating the xml
writer\n");
return;
}
/* Start the document with the xml default for the version,
* encoding utf-8 and the default for the standalone
* declaration. */
rc = xmlTextWriterStartDocument(writer, NULL, MY_ENCODING, NULL);
if (rc < 0) {
printf ("refbox_xml_msg_creat: Error
at xmlTextWriterStartDocument\n");
return;
}
/* Start an element named "EXAMPLE". Since thist is the first
* element, this will be the root element of the document. */
rc = xmlTextWriterStartElement(writer, BAD_CAST "refcall");
if (rc < 0) {
printf ("refbox_xml_msg_creat: Error
at xmlTextWriterStartElement\n");
return;
}
/* Write a comment as child of EXAMPLE.
* Please observe, that the input to the xmlTextWriter functions
* HAS to be in UTF-8, even if the output XML is encoded
* in iso-8859-1 */
/*rc = xmlTextWriterWriteComment(writer, ConvertInput ("This
is a comment with special chars: <äöü>",
MY_ENCODING));*/
/*if (rc < 0) {
printf ("refbox_xml_msg_creat: Error
at xmlTextWriterWriteComment\n");
return;
}* /* Add an attribute with name
"gameState" and value "on_off_int" to refcall. */
rc = xmlTextWriterWriteAttribute(writer, BAD_CAST "gameState",
ref_msg_gen->state);
if (rc < 0) {
printf ("refbox_xml_msg_creat: Error
at xmlTextWriterWriteAttribute\n");
return;
}
/* Add an attribute with name "id" and value "#10"
to refcall. */
rc = xmlTextWriterWriteAttribute(writer, BAD_CAST
"id",ref_msg_gen->id);
if (rc < 0) {
printf ("refbox_xml_msg_creat: Error
at xmlTextWriterWriteAttribute\n");
return;
}
/* Start an element named "playerIn" as child of refcall. */
rc = xmlTextWriterStartElement(writer, ref_msg_gen->command);
if (rc < 0) {
printf ("refbox_xml_msg_creat: Error
at xmlTextWriterStartElement\n");
return;
}
/* Add an attribute with name "requestID" and value
"a-b" to playerIN. */
rc = xmlTextWriterWriteAttribute(writer, ref_msg_gen->attrib,
ref_msg_gen->val_attrib);
if (rc < 0) {
printf ("refbox_xml_msg_creat: Error
at xmlTextWriterWriteAttribute\n");
return;
}
/* Add an attribute with name "decicion" and value
"accept|denied" to playerIN. */
rc = xmlTextWriterWriteAttribute(writer, ref_msg_gen->attrib2, ref_msg_gen->val_attrib2);
if (rc < 0) {
printf ("refbox_xml_msg_creat: Error
at xmlTextWriterWriteAttribute\n");
return;
}
/* Add an attribute with name "decicion" and value
"accept|denied" to playerIN. */
rc = xmlTextWriterWriteAttribute(writer, ref_msg_gen->attrib3,
ref_msg_gen->val_attrib3);
if (rc < 0) {
printf ("refbox_xml_msg_creat: Error
at xmlTextWriterWriteAttribute\n");
return;
}
/*Close the element named playerIn. */
rc = xmlTextWriterEndElement(writer);
if (rc < 0) {
printf("refbox_xml_msg_creat: Error at
xmlTextWriterEndElement\n");
return;
}
/* Here we could close the elements ORDER and EXAMPLE using the
* function xmlTextWriterEndElement, but since we do not want to
* write any other elements, we simply call xmlTextWriterEndDocument,
* which will do all the work. */
rc = xmlTextWriterEndDocument(writer);
if (rc < 0) {
printf("refbox_xml_msg_creat: Error at
xmlTextWriterEndDocument\n");
return;
}
xmlFreeTextWriter(writer);
fp = fopen(file, "w");
if (fp == NULL) {
printf("refbox_xml_msg_creat: Error at fopen\n"); return;
}
fprintf(fp, "%s", (const char *) buf->content);
fclose(fp); } ___________________________________________________________________________________________________________________ this code reads from the
file, i tryed to pass the buffer and chage to readfor memory, no success [2]_____________________________________________________________________________________________________ void streamFile(const char *file,ref
*ref_call_p){
xmlTextReaderPtr reader;
int ret;
FILE *fp;
/*xmlBufferPtr buf;*/
reader = xmlReaderForFile(file, NULL, 0); _______________________________________________________________________________________ /* reader = xmlReaderForMemory(&buf,
sizeof(buf), NULL, MY_ENCODING, 0);*/ _____________________________________________________________________________________
used this -> error
if (reader != NULL) {
ret = xmlTextReaderRead(reader);
while (ret == 1) { processNode(reader,
(ref*)ref_call_p);
ret =
xmlTextReaderRead(reader);
}
xmlFreeTextReader(reader);
if (ret != 0) { fprintf(stderr, ": failed to
parse\n");
}
} else {
fprintf(stderr, "Unable to open \n");
} } after this processnode is
called, I will attach the code if any one has an idea I
would be very thanked tks, rodrigo *********************************** Rodrigo de Meneses Barcelos Cabeceiras Rua do Ameal nº.507 5ºEsq. 4200-061 Porto Tel. 917776045 msn: rodrigo cabeceiras tvtel pt
Web www.rodrigocabeceiras.pt.to *********************************** |
Attachment:
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