parser.c
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#include <string.h>
#include <stdlib.h>
#include <sys/types.h>
#include "class.h"
#include "http/request_parser.h"
#include "interface/class.h"
#include "interface/stream_reader.h"
#include "http/request.h"
#include "http/request_queue.h"
void httpRequestParserParse(HttpRequestParser);
static
void
ctor(void * _this, va_list * params)
{
HttpRequestParser this = _this;
this->request_queue = new(HttpRequestQueue);
this->buffer = malloc(HTTP_REQUEST_PARSER_READ_CHUNK);
this->buffer[0] = 0;
}
static
void
dtor(void * _this)
{
HttpRequestParser this = _this;
free(this->buffer);
delete(&(this->request_queue));
}
static
void
_clone(void * _this, void * _base)
{
HttpRequestParser this = _this;
HttpRequestParser base = _base;
size_t chunks;
/**
* every parser has its own queue...
*/
this->request_queue = new(HttpRequestQueue);
this->buffer_used = base->buffer_used;
chunks = this->buffer_used / HTTP_REQUEST_PARSER_READ_CHUNK;
chunks++;
this->buffer = malloc(chunks * HTTP_REQUEST_PARSER_READ_CHUNK);
memcpy(this->buffer, base->buffer, this->buffer_used);
}
static
size_t
get_data(void * _this, int fd)
{
HttpRequestParser this = _this;
size_t remaining, chunks;
char buffer[1024];
size_t size = read(fd, buffer, 1024);
if (0 < size) {
remaining = this->buffer_used % HTTP_REQUEST_PARSER_READ_CHUNK;
chunks = this->buffer_used / HTTP_REQUEST_PARSER_READ_CHUNK;
/**
* because a division always rounds down
* chunks holds exactly the currently allocated chunks if
* remaining equals 0 but there is no space left.
* Else chunks holds the actually allocated amount of chunks
* minus 1.
* For this reason chunks always has to be increased by 1.
*/
chunks++;
if (size >= remaining) {
this->buffer =
realloc(this->buffer, chunks * HTTP_REQUEST_PARSER_READ_CHUNK);
}
memcpy(this->buffer + this->buffer_used, buffer, size);
this->buffer_used += size;
this->buffer[this->buffer_used] = 0;
httpRequestParserParse(this);
}
return size;
}
INIT_IFACE(Class, ctor, dtor, _clone);
INIT_IFACE(StreamReader, get_data);
CREATE_CLASS(HttpRequestParser, NULL, IFACE(Class), IFACE(StreamReader));
// vim: set ts=4 sw=4: