filedate.c

压缩解压,是unzip540的升级,这个外国网站摘来的源码,是evb编写.

        *ptr = strlen(fib->fib_FileName);
        FreeMem(fib,(long)sizeof(*fib));
        UnLock(lock);

        /* now fill in argument array */

        pktargs[0] = 0;
        pktargs[1] = (LONG)dirlock;
        pktargs[2] = (LONG)&ptr[0] >> 2;
        pktargs[3] = (LONG)&pDate;

        errno = ret = sendpkt(taskport,ACTION_SET_DATE,pktargs,4L);

        FreeMem(ptr,64L);
        UnLock(dirlock);

        return SUCCESS;
    }  /* ?(SysBase->lib_Version >= ReqVers) */
} /* FileDate() */


char *getenv(const char *var)         /* not reentrant! */
{
    static char space[ENVSIZE];
    struct Process *me = (void *) FindTask(NULL);
    void *old_window = me->pr_WindowPtr;
    char *ret = NULL;

    me->pr_WindowPtr = (void *) -1;   /* suppress any "Please insert" popups */
    if (SysBase->LibNode.lib_Version >= ReqVers) {
        if (GetVar((char *) var, space, ENVSIZE - 1, /*GVF_GLOBAL_ONLY*/ 0) > 0)
            ret = space;
    } else {                    /* early AmigaDOS, get env var the crude way */
        BPTR hand, foot, spine;
        int z = 0;
        if (foot = Lock("ENV:", ACCESS_READ)) {
            spine = CurrentDir(foot);
            if (hand = Open((char *) var, MODE_OLDFILE)) {
                z = Read(hand, space, ENVSIZE - 1);
                Close(hand);
            }
            UnLock(CurrentDir(spine));
        }
        if (z > 0) {
            space[z] = '\0';
            ret = space;
        }
    }
    me->pr_WindowPtr = old_window;
    return ret;
}

#ifdef __SASC
int setenv(const char *var, const char *value, int overwrite)
{
    struct Process *me = (void *) FindTask(NULL);
    void *old_window = me->pr_WindowPtr;
    int ret = -1;

    me->pr_WindowPtr = (void *) -1;   /* suppress any "Please insert" popups */
    if (SysBase->LibNode.lib_Version >= ReqVers)
        ret = !SetVar((char *)var, (char *)value, -1, GVF_GLOBAL_ONLY | LV_VAR);
    else {
        BPTR hand, foot, spine;
        long len = value ? strlen(value) : 0;
        if (foot = Lock("ENV:", ACCESS_READ)) {
            spine = CurrentDir(foot);
            if (len) {
                if (hand = Open((char *) var, MODE_NEWFILE)) {
                    ret = Write(hand, (char *) value, len + 1) >= len;
                    Close(hand);
                }
            } else
                ret = DeleteFile((char *) var);
            UnLock(CurrentDir(spine));
        }
    }
    me->pr_WindowPtr = old_window;
    return ret;
}

/* Stores data from timezone and daylight to ENV:TZ.                  */
/* ENV:TZ is required to exist by some other SAS/C library functions, */
/* like stat() or fstat().                                            */
void set_TZ(long time_zone, int day_light)
{
    char put_tz[MAXTIMEZONELEN];  /* string for putenv: "TZ=aaabbb:bb:bbccc" */
    int offset;
    void *exists;     /* dummy ptr to see if global envvar TZ already exists */
    exists = (void *)getenv(TZ_ENVVAR);
    /* see if there is already an envvar TZ_ENVVAR. If not, create it */
    if (exists == NULL) {
        /* create TZ string by pieces: */
        sprintf(put_tz, "GMT%+ld", time_zone / 3600L);
        if (time_zone % 3600L) {
            offset = (int) labs(time_zone % 3600L);
            sprintf(put_tz + strlen(put_tz), ":%02d", offset / 60);
            if (offset % 60)
                sprintf(put_tz + strlen(put_tz), ":%02d", offset % 60);
        }
        if (day_light)
            strcat(put_tz,"DST");
        setenv(TZ_ENVVAR, put_tz, 1);
    }
}
#endif /* __SASC */

/* set state as well as possible from settings found in locale.library */
int GetPlatformLocalTimezone(sp, fill_tzstate_from_rules)
     register struct state * ZCONST sp;
     void (*fill_tzstate_from_rules)(struct state * ZCONST sp_res,
                                     ZCONST struct rule * ZCONST start,
                                     ZCONST struct rule * ZCONST end);
{
    struct Library *LocaleBase;
    struct Locale *ll;
    struct Process *me = (void *) FindTask(NULL);
    void *old_window = me->pr_WindowPtr;
    BPTR eh;
    int z, valid = FALSE;

    /* read timezone from locale.library if TZ envvar missing */
    me->pr_WindowPtr = (void *) -1;   /* suppress any "Please insert" popups */
    if (LocaleBase = OpenLibrary("locale.library", 0)) {
        if (ll = OpenLocale(NULL)) {
            z = ll->loc_GMTOffset;    /* in minutes */
            if (z == -300) {
                if (eh = Lock("ENV:sys/locale.prefs", ACCESS_READ)) {
                    UnLock(eh);
                    valid = TRUE;
                } else
                    z = 300; /* bug: locale not initialized, default bogus! */
            } else
                valid = TRUE;
            if (valid) {
                struct rule startrule, stoprule;

                sp->timecnt = 0;
                sp->typecnt = 1;
                sp->charcnt = 2;
                sp->chars[0] = sp->chars[1] = '\0';
                sp->ttis[0].tt_abbrind = 0;
                sp->ttis[1].tt_abbrind = 1;
                sp->ttis[0].tt_gmtoff = -z * MINSPERHOUR;
                sp->ttis[1].tt_gmtoff = -z * MINSPERHOUR + SECSPERHOUR;
                sp->ttis[0].tt_isdst = 0;
                sp->ttis[1].tt_isdst = 1;
                stoprule.r_type = MONTH_NTH_DAY_OF_WEEK;
                stoprule.r_day = 0;
                stoprule.r_week = 5;
                stoprule.r_mon = 10;
                stoprule.r_time = 2 * SECSPERHOUR;
                startrule = stoprule;
                startrule.r_mon = 4;
                startrule.r_week = 1;
                if (z >= -180 && z < 150) {
                    /* At this point we make a really gratuitous assumption: */
                    /* if the time zone could be Europe, we use the European */
                    /* Union rules without checking what country we're in.   */
                    /* The AmigaDOS locale country codes do not, at least in */
                    /* 2.x versions of the OS, recognize very many countries */
                    /* outside of Europe and North America.                  */
                    sp->typecnt = 2;
                    startrule.r_mon = 3;   /* one week earlier than US DST */
                    startrule.r_week = 5;
                } else if (z >= 150 && z <= 480 &&
                           /* no DST in alaska, hawaii */
                           (ll->loc_CountryCode == 0x55534100 /*"USA"*/ ||
                            ll->loc_CountryCode == 0x43414E00 /*"CAN"*/))
                    sp->typecnt = 2;
                    /* We check the country code for U.S. or Canada because */
                    /* most of Latin America has no DST.  Even in these two */
                    /* countries there are some exceptions...               */
                /* else if...  Feel free to add more cases here! */

                if (sp->typecnt > 1)
                    (*fill_tzstate_from_rules)(sp, &startrule, &stoprule);
            }
            CloseLocale(ll);
        }
        CloseLibrary(LocaleBase);
    }
    me->pr_WindowPtr = old_window;
    return valid;
}

#ifdef ZIP
time_t time(time_t *tp)
{
    time_t t;
    struct DateStamp ds;
    DateStamp(&ds);
    t = ds.ds_Tick / TICKS_PER_SECOND + ds.ds_Minute * 60
                                      + (ds.ds_Days + 2922) * SECSPERDAY;
    t = mktime(gmtime(&t));
    /* gmtime leaves ds in the local timezone, mktime converts it to GMT */
    if (tp) *tp = t;
    return t;
}
#endif /* ZIP */

#endif /* !FUNZIP && !UTIL */


#if CRYPT || !defined(FUNZIP)

/*  sendpkt.c
 *  by A. Finkel, P. Lindsay, C. Sheppner
 *  returns Res1 of the reply packet
 */
/*
#include <exec/types.h>
#include <exec/memory.h>
#include <libraries/dos.h>
#include <libraries/dosextens.h>
#include <proto/exec.h>
#include <proto/dos.h>
*/

LONG sendpkt(struct MsgPort *pid, LONG action, LONG *args, LONG nargs);

LONG sendpkt(pid,action,args,nargs)
struct MsgPort *pid;           /* process identifier (handler message port) */
LONG action,                   /* packet type (desired action)              */
     *args,                    /* a pointer to argument list                */
     nargs;                    /* number of arguments in list               */
{

    struct MsgPort *replyport, *CreatePort(UBYTE *, long);
    void DeletePort(struct MsgPort *);
    struct StandardPacket *packet;
    LONG count, *pargs, res1;

    replyport = CreatePort(NULL,0L);
    if( !replyport ) return(0);

    packet = (struct StandardPacket *)AllocMem(
            (long)sizeof(struct StandardPacket),MEMF_PUBLIC|MEMF_CLEAR);
    if( !packet )
    {
        DeletePort(replyport);
        return(0);
    }

    packet->sp_Msg.mn_Node.ln_Name  = (char *)&(packet->sp_Pkt);
    packet->sp_Pkt.dp_Link          = &(packet->sp_Msg);
    packet->sp_Pkt.dp_Port          = replyport;
    packet->sp_Pkt.dp_Type          = action;

    /* copy the args into the packet */
    pargs = &(packet->sp_Pkt.dp_Arg1);      /* address of 1st argument */
    for( count=0; count<nargs; count++ )
        pargs[count] = args[count];

    PutMsg(pid,(struct Message *)packet);   /* send packet */

    WaitPort(replyport);
    GetMsg(replyport);

    res1 = packet->sp_Pkt.dp_Res1;

    FreeMem((char *)packet,(long)sizeof(*packet));
    DeletePort(replyport);

    return(res1);

} /* sendpkt() */

#endif /* CRYPT || !FUNZIP */


#if CRYPT || (defined(UNZIP) && !defined(FUNZIP))

/* Agetch() reads one raw keystroke -- uses sendpkt() */

int Agetch(void)
{
    LONG sendpkt(struct MsgPort *pid, LONG action, LONG *args, LONG nargs);
    struct Task *me = FindTask(NULL);
    struct CommandLineInterface *cli = BADDR(((struct Process *) me)->pr_CLI);
    BPTR fh = cli->cli_StandardInput;   /* this is immune to < redirection */
    void *conp = ((struct FileHandle *) BADDR(fh))->fh_Type;
    char longspace[8];
    long *flag = (long *) ((ULONG) &longspace[4] & ~3); /* LONGWORD ALIGNED! */
    UBYTE c;

    *flag = 1;
    sendpkt(conp, ACTION_SCREEN_MODE, flag, 1);         /* assume success */
    Read(fh, &c, 1);
    *flag = 0;
    sendpkt(conp, ACTION_SCREEN_MODE, flag, 1);
    if (c == 3)                                         /* ^C in input */
        Signal(me, SIGBREAKF_CTRL_C);
    return c;
}

#endif /* CRYPT || (UNZIP && !FUNZIP) */

#endif /* __amiga_filedate_c*/