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check_file_size added and used in curl / file load from disk and http, http file load rewritten (related to bug #1014)

/** @file
	Parser: commonly used functions.

	Copyright (c) 2001-2015 Art. Lebedev Studio (http://www.artlebedev.com)
	Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
*/

#ifndef PA_HTTP_H
#define PA_HTTP_H

#define IDENT_PA_HTTP_H "$Id: pa_http.h,v 1.18 2017/01/23 09:33:02 moko Exp $"

#include "pa_vstring.h"
#include "pa_vint.h"
#include "pa_vhash.h"
#include "pa_vtable.h"
#include "pa_socks.h"
#include "pa_charset.h"
#include "pa_request.h"

#define HTTP_COOKIES_NAME "cookies"

#ifndef DOXYGEN
struct File_read_http_result {
	char *str; size_t length;
	HashStringValue* headers;
}; 
#endif

class ResponseHeaders {
public:
	class Header {
	public:
		String::Body name;
		String::Body value;

		Header(String::Body aname, String::Body avalue) : name(aname), value(avalue) {}

		void transcode(Charset &charset, Charset &source){
			name=Charset::transcode(name, charset, source);
			value=Charset::transcode(value, charset, source);
		}

	};

	Array<Header> headers;

	String::Body content_type;
	uint64_t content_length;

	ResponseHeaders() : content_type(""), content_length(0){}

	bool add_header(const char *line);

	void clear(){
		headers.clear();
		content_type="";
		content_length=0;
	}

};

Table* parse_cookies(Request& r, Table *cookies);
void tables_update(HashStringValue& tables, const String::Body name, const String& value);

char *pa_http_safe_header_name(const char *name);

File_read_http_result pa_internal_file_read_http(Request& r, const String& file_spec, bool as_text, HashStringValue *options=0, bool transcode_text_result=true);

#endif