write.c
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#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include "class.h"
#include "interface/class.h"
#include "http/message.h"
#include "http/response.h"
#include "http/response/writer.h"
HttpResponse
httpResponseWriterWrite(HttpResponseWriter this, int fd)
{
HttpMessageQueue respq = this->response_queue;
HttpResponse retval = this->cur_response;
HttpMessage message = (HttpMessage)this->cur_response;
int cont = 1;
while (cont) {
switch (this->state) {
case HTTP_RESPONSE_GET:
if (NULL == this->cur_response && 0 < respq->nmsgs) {
message = respq->msgs[0];
retval = this->cur_response = (HttpResponse)message;
memmove(respq->msgs,
&(respq->msgs[1]),
sizeof(void*) * (--respq->nmsgs + 1));
this->nbuffer = httpMessageHeaderSizeGet(message);
this->buffer = malloc(this->nbuffer);
this->written = 0;
httpMessageHeaderToString(message, this->buffer);
this->state = HTTP_RESPONSE_HEADER;
}
else {
cont = 0;
}
break;
case HTTP_RESPONSE_HEADER:
this->written += write(
fd,
&(this->buffer[this->written]),
this->nbuffer - this->written);
if (this->written == this->nbuffer) {
free(this->buffer);
this->buffer = NULL;
this->nbuffer = 0;
this->written = 0;
this->pstart = 0;
this->pend = 0;
this->state = HTTP_RESPONSE_PIPE;
}
else {
cont = 0;
}
break;
case HTTP_RESPONSE_PIPE:
switch (message->type) {
case HTTP_MESSAGE_BUFFERED:
this->written += write(
fd,
&(message->body[this->written]),
message->nbody - this->written);
break;
case HTTP_MESSAGE_PIPED:
/**
* read
*/
if (this->nbuffer < message->nbody) {
size_t rsize;
size_t temp;
this->pend = (1024 == this->pend)?
0 : this->pend;
rsize = (this->pstart <= this->pend)?
1024 - this->pend : this->pstart - 1;
temp = read(
message->handle,
&(this->pipe[this->pend]),
rsize);
this->nbuffer += temp;
this->pend += temp;
}
/**
* write
*/
{
size_t wsize;
size_t temp;
wsize = (this->pstart <= this->pend)?
this->pend - this->pstart : 1024 - this->pstart;
temp = write(fd, &(this->pipe[this->pstart]), wsize);
this->written += temp;
this->pstart += temp;
}
break;
default:
break;
}
if (this->written == message->nbody) {
this->nbuffer = 0;
this->written = 0;
this->pstart = 0;
this->pend = 0;
this->state = HTTP_RESPONSE_DONE;
}
else {
cont = 0;
}
break;
case HTTP_RESPONSE_DONE:
this->cur_response = NULL;
this->state = HTTP_RESPONSE_GET;
cont = 0;
break;
}
}
return retval;
}
// vim: set ts=4 sw=4: