src/http/request/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;

        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;

                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));

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