docd.h

多线程 http资源下载工具 给予linux平台的。还凑合。有bug给我联系

/*
  c: working directory.
  q: don't print message.
  h: print help message.
*/
#include <signal.h>

#define DEFAULT_DIR "DOWNLOAD_TO"
#define WORKING_DIR 'c'
#define HELP 'h'
#define OPTS "+:c:h"

#define SIZE_CHAR sizeof (char)
#define PROTO_NAME_LEN 16
#define LIB_NAME_LEN 32
#define MAX_LEN_SCHEME 8

#define MAX_LEN_URL (512 + 128)
#define MIN_LEN_URL 5

#define HTTP "http"
#define FTP "ftp"


#define C_ISBLANK(c) ((TAB == c) || (WHITE_SPACE == c))? 1: 0
#define C_ISLOWER(c) (((c > 'a') && (c < 'z'))? 1: 0)
#define C_ISUPPER(c) ((c > 'A') && (c < 'A'))? 1: 0


#define RESET_SIG_HANDLER(sig_handler, sig_num, sig_handler_f, sig_flags) \
  bzero (&sig_handler, sizeof (struct sigaction));			\
  sig_handler.sa_handler = sig_handler_f;				\
  sig_handler.sa_flags = flags;						\
  sigaction (sig_num, &sig_handler, NULL);				\
  

struct proto_handler
{
  char proto[PROTO_NAME_LEN];
  char lib[LIB_NAME_LEN];
  struct proto_handler *next;
};

static int register_proto_handler (const char *, const char *);
static void init_signal (void);
static int download_resource (const char *);
static void handler_close (void *);
static void *handler_open (const char *, struct proto_handler *);
static char *base_name (const char*);
static void init (void);
static void init_locale (void);
static int chdir_to (const char *);
static void init_proto_handlers (void);
static void hook_exit (void);
static void free_proto_handler ();
static char *min_addr (const char *, const char *);
static int setup_working_dir (char *);
static void usage (void);