url.h

dget是一个基于Linux平台的多线程下载工具, 采用C++开发。主要支持FTP, HTTP, MMS, RTSP协议下载, 目前为止主要实现了FTP, HTTP, MMS,RTSP协议的多线程下载

#ifndef __URL_H
#define __URL_H

/********************* class Url definition **********/
#include "dget.h"

/* URL separator (for findurl) */
#define URL_SEPARATOR "!\"#'(),>`{}|<>"

/* Tha smaller value of the two. */
#define MINVAL(x, y) ((x) < (y) ? (x) : (y))

/* ASCII char -> HEX digit */
#define ASC2HEXD(x) (((x) >= '0' && (x) <= '9') ?  \
		     ((x) - '0') : (toupper(x) - 'A' + 10))

/* HEX digit -> ASCII char */
#define HEXD2ASC(x) (((x) >= 0 && (x) <= 9) ?  \
		     ((x) + '0') : ((x) - 10 + 'A'))

/* A list of unsafe characters for encoding, as per RFC1738.  '@' and
   ':' (not listed in RFC) were added because of user/password
   encoding, and \033 because of safe printing. */
#define URL_UNSAFE " <>\"#%{}|\\^~[]`@:\033"

/* If the string contains unsafe characters, duplicate it with
   encode_string, otherwise just copy it with strdup. */
#define CLEANDUP(x) (contains_unsafe(x) ? encode_string(x) : nstrdup(x))

/* Just another ugly macro (defines a static local char *). */
#define URL_CLEANSE(s)                                          \
   do { if (contains_unsafe(s)) { static char *tmp;             \
   tmp = encode_string(s); free(s); s = tmp; }} while (0);

/* Is a directory "."? */
#define ISDOT(x) ((*(x) == '.') && (!*(x + 1)))
/* Is a directory ".."? */
#define ISDDOT(x) ((*(x) == '.') && (*(x + 1) == '.') && (!*(x + 2)))

#define USE_PROXY(u) (opt.use_proxy && getproxy((u)->proto)             \
                      && no_proxy_match((u)->host,                      \
                                        (const char **)opt.no_proxy))

enum uflags 
{
    URELATIVE = 0x0001,		/* Is URL relative? */
    UNOPROTO = 0x0002,		/* Is URL without a protocol? */
    UABS2REL = 0x0004,		/* Convert absolute to relative?*/
    UREL2ABS = 0x0008		/* Convert relative to absolute? */
};

class TUrl
{
public :
	char * Addr;
	
	proto_t Proto;
	long Port;
	char * UserName;
	char * PassWord;
	char * HostName;
	char * HostPath;
	char * HostDirName;
	char * HostFileName;
	
	bool ResumeSupport;
	long FileSize;

public :
	
	TUrl(const char * s);
	~TUrl();
	
	void ParseUrl(void);
//	void DispUrl(void);
	
	void SimplifyPath(char * Path);
	
	bool IsContainUnsafe(const char * s);
	
	void DecodeString(char *);
	
	char * EncodeString(const char *);

};


#endif