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WN_GTIME.C
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C/C++ Source or Header
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1990-03-12
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7KB
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156 lines
/*
** The Window BOSS's Data Clerk
** Copyright (c) 1988 - Philip A. Mongelluzzo
** All rights reserved.
**
** wn_gtime - get time from window with gross validation
**
** Copyright (c) 1988 - Philip A. Mongelluzzo
** All rights reserved.
**
*/
#include "windows.h" /* standard stuff */
/*
************
* wn_gtime *
************
*/
/*
** wn_gtime(fun,frm,fld,wn,row,col,prmpt,atrib,fill,hrs,mins,secs,ubuff,hlpmsg,errmsg)
**
** int fun - fucntion code (SET || XEQ)
** (WIFORM) frm - form pointer (actual || NFRM)
** int fld - field # in form (actual || NFLD)
** (WINDOWPTR) wn - window pointer
** int row - row in window where data input begins
** int col - col in window where data input begins
** (char *) prmpt - field promt (call with NSTR for none)
** unsigned atrib - field (not prompt) atributes
** char fill - field fill character
** (int *) hrs - pointer to int for month (0-24)
** (int *) mins - pointer to int for day (0-59)
** (int *) secs - pointer to int for year (0-59)
** (char *) ubuff - pointer to char array of 10 bytes for editing
** (char *)hlpmsg - pointer to help message (call with NSTR for none)
** (char *)errmsg - pointer to err message (call with NSTR) for none)
**
** RETURNS:
**
** HRS, MINS, and SECS via pointers.
**
** NULL if error, else the non zero value returned from wn_input.
**
** NOTES:
**
** FUN - fun can only be SET for form setup, or XEQ for immediate
** execution. When called with SET, valid arguements for both
** "frm" and "fld" must be specfied. frm is the field pointer
** returned from frmopn(), and fld is the field sequence number
** in the form for this field. When called with XEQ frm must
** be NFRM and fld must NFLD.
**
** UBUFF - Editing buffer. Must be of sufficent size to hold the
** data as it is entered. Typical value is the length
** of the mask + 2 bytes (strlen(mask)+2).
**
** On entry, the first byte of ubuff should be
** a null, otherwise wn_input assumes there is valid
** data there and will enter edit mode. This can be
** handy if there is a need for prefilled but editable
** fields. In actual pratice, wn_input uses this
** buffer for both initial character data entry and
** subsequent editing.
**
** On return, ubuff contains the actual data entered in
** character format with fill and mask characters as
** spaces (e.g. "23 59 22").
**
** Only basic reasonability checks are made. Therefore, times like
** 24:59:59 can be returned.
**
** Calls wn_input to perform data entry.
**
** Data must satisfy validation checks for function to return.
*/
wn_gtime(fun,frm,fld,wn,row,col,prmpt,atrib,fill,hours,mins,secs,ubuff,hlpmsg,errmsg)
int fun; /* SET or XEQ */
WIFORM frm; /* form pointer or NFRM */
int fld; /* field number or NFLD */
WINDOWPTR wn; /* window to use */
int row, col; /* position of input field */
char *prmpt; /* prompt string */
unsigned atrib; /* data entry atribute */
char fill; /* fill char */
int *hours, *mins, *secs; /* hours, mins, secs */
char *ubuff; /* returns "hh:mm:ss" */
char *hlpmsg, *errmsg; /* help & error messages */
{
int h, m, s; /* hours, mins, secs */
char mbuf[10]; /* local buffer */
char *p; /* scratch */
unsigned int r; /* sscanf return value */
int rv; /* return value */
int eflg; /* error flag */
if(fun != SET && fun != XEQ) /* saftey check */
return(NULL);
if(fun == SET) { /* set up */
if(frm[fld]->pself != (char *)frm[fld])
wns_ierr("wn_gtime"); /* die if memory is mangled */
frm[fld]->wn = wn; /* set window */
frm[fld]->row = row; /* set row */
frm[fld]->col = col; /* set col */
frm[fld]->prmpt = prmpt; /* set prompt */
frm[fld]->atrib = atrib; /* set attribute */
frm[fld]->fill = fill; /* set fill character */
frm[fld]->fcode = GTIME; /* function code */
frm[fld]->v1.vip = hours; /* &hours */
frm[fld]->v2.vip = mins; /* &mins */
frm[fld]->v3.vip = secs; /* &secs */
frm[fld]->v4.vcp = ubuff; /* &ubuff */
frm[fld]->v5.vcp = hlpmsg; /* &hlpmsg */
frm[fld]->v6.vcp = errmsg; /* &errmsg */
return(TRUE);
}
begin:
if(!(rv=wn_input(wn,row,col,prmpt,"##:##:##",fill,atrib,ubuff,hlpmsg))) {
*ubuff = NUL; /* load ubuff with a bad time */
return(NULL); /* indicate error */
}
if(wni_frmflg) return(TRUE); /* wn_frmget in progress */
strcpy(mbuf,ubuff); /* load my buffer */
p = mbuf; /* set pointer */
while (*p) { /* set up to pluck */
if(*p == ':') /* the colon */
*p = ' '; /* and stash a space */
p++; /* bump pointer */
} /* continue till done */
r = sscanf(mbuf, "%02d %02d %02d", &h, &m, &s);
if(r == EOF || r == 0) { /* no data */
*hours = *mins = *secs = 0; /* set em all to zip */
return(rv); /* and return */
}
eflg = FALSE;
if(r != 3) eflg = TRUE; /* not enuf data */
if(h < 0 || h > 24) eflg = TRUE; /* bad hour */
if(m < 0 || m > 59) eflg = TRUE; /* bad min */
if(s < 0 || s > 59) eflg = TRUE; /* bad sec */
if(eflg) { /* error ? */
wn_iemsg(errmsg); /* do error thing */
goto begin; /* and start over */
}
*hours = h; /* load user hours */
*mins = m; /* and mins */
*secs = s; /* and seconds */
return(rv); /* all is well.. in gross sense */
}
/* End */