Liren Large Software Subsidy 7/07.iso/c/c185/1.ddi/FUNCS.EXE/CSCAPE/SOURCE/FNMONEY.C

C/C++ Source or Header | 1989-09-07 | 4.6 KB | 181 lines

/*
    fnmoney.c 10/30/86

    % money_funcs

    Money editting functions.
    These functions use a long and put a decimal point at position 2.
    The value returned is in cents. Divide by 100 to get a dollar amount.

    Normally this functions saves enough space at the left of the field
    to display a minus sign.  (toggled with the '-' key).
    If you wish to disable this feature undefine the symbol MINUS and
    recompile this file.

    C-scape 3.1
    Copyright (c) 1986, 1987, 1988 by Oakland Group, Inc.
    ALL RIGHTS RESERVED.

    Revision History:
    -----------------
    10/01/87 jmd     added casting
     4/06/88 jmd     added call to sed_DoSpecial
     5/12/88 jmd    added calls to sed_GetScratchPad()
     5/14/88 jmd    added MINUS option
     9/17/88 jmd    added global error msg strings for easy changing
     9/17/88 jmd     added std_ funcs
     9/24/88 jmd     clears after first key pressed
    10/09/88 jmd     added SED_ABORT support
    10/14/88 jdc    added var_size element to field_funcs_struct

     6/07/89 jmd    added test for mouse code (later removed)
*/

#include <stdio.h>
#include <string.h>
#include <ctype.h>

#include "cscape.h"
#include "fnfunc.h"            /* for field functions */
#include "strdecl.h"        /* for C-scape string functions */
#include "scancode.h"

#define MINUS                /* defining this enables the minus sign */
#define    DECP    2            /* number of digits past the decimal point */

OGLOBAL field_funcs_struct money_funcs = {
    num_fenter,
    money_fexit,
    money_fkey,
    money_senter,
    money_sexit,
    sizeof(long)
};

boolean money_fexit(sed)
    sed_type sed;
/*
    Validates a long using the string in field data 1.
*/
{
    long val;

    if (sed_GetBaton(sed) != SED_ABORT) {
        strcpy(sed_GetScratchPad(sed), sed_GetCurrRecord(sed));
        sscanf(strnodecp(sed_GetScratchPad(sed)), "%ld", &val);

        /* call standard numeric validation routine (fnstdval.c) */
        if (!std_NumValid(sed, (double) val)) {
            return(FALSE);
        }
    }

    return(std_fexit(sed));
}

void money_fkey(sed)
    sed_type sed;
{
    int scancode, key;

    scancode = kb_Read();

    if (sed_DoSpecial(sed, scancode))
        return;
    if (special_key(sed, scancode))
        return;
    if (inter_field(sed, scancode))
        return;
    if (inter_page(sed, scancode))
        return;

    switch(scancode) {
    case BACKSPACE:
        sed_PullLeft(sed);
        strcpy(sed_GetScratchPad(sed), sed_GetCurrRecord(sed));
        sed_SetCurrRecord(sed, strdecp(sed_GetScratchPad(sed), DECP));
        sed_UpdateCurrField(sed);
        break;
    default:
        /* don't allow characters in the first position */

        key = ascii(scancode);
        if (isdigit(key)) {
            if (sed_GetBaton(sed) == SED_FIRST) {
                /* Clear field if first key pressed is a digit */
                strfill(sed_GetScratchPad(sed), ' ', strlen(sed_GetCurrRecord(sed)));
                sed_SetCurrRecord(sed, strdecp(sed_GetScratchPad(sed), DECP));
                sed_UpdateCurrField(sed);
            }

#ifdef MINUS
            if (sed_GetChar(sed, 1) != ' ' && sed_GetChar(sed, 1) != '-') {
                /* don't allow characters in the first position
                   (save for minus sign) */
                break;
            }
#else
            if (sed_GetChar(sed, 0) != ' ' && sed_GetChar(sed, 0) != '-') {
                /* if minus is disabled don't allow more numbers
                   after field is filled */
                break;
            }
#endif

            sed_PushLeft(sed, key);
            strcpy(sed_GetScratchPad(sed), sed_GetCurrRecord(sed));
            sed_SetCurrRecord(sed, strdecp(sed_GetScratchPad(sed), DECP));
            sed_UpdateCurrField(sed);
        }

#ifdef MINUS
        /* toggle minus sign if appropriate */
        else if (key == '-') {
            strcpy(sed_GetScratchPad(sed), sed_GetCurrRecord(sed));
            sed_SetCurrRecord(sed, strminus(sed_GetScratchPad(sed)));
            sed_UpdateCurrField(sed);
        }
#endif
        /* Clear the field if ' ' is pressed */

        else if (key == ' ') {
            strfill(sed_GetScratchPad(sed), ' ', strlen(sed_GetCurrRecord(sed)));
            sed_SetCurrRecord(sed, strdecp(sed_GetScratchPad(sed), DECP));
            sed_UpdateCurrField(sed);
        }

        break;
    }

    /* reset baton */
    sed_SetBaton(sed, -1);
}

void money_senter(sed, fieldno)
    sed_type sed;
    int fieldno;
/*
    Convert native type to string for record.
*/
{
    sprintf(sed_GetScratchPad(sed), "%ld", *((long *) sed_GetVar(sed, fieldno)));
    strright(sed_GetScratchPad(sed), sed_GetRecordLen(sed, fieldno));
    sed_SetRecord(sed, strdecp(sed_GetScratchPad(sed), DECP), fieldno);

    std_senter(sed, fieldno);
}

void money_sexit(sed, fieldno)
    sed_type sed;
    int fieldno;
/*
    Converts record back to native type.
*/
{
    if (sed_GetBaton(sed) != SED_ABORT) {
        strcpy(sed_GetScratchPad(sed), sed_GetRecord(sed, fieldno));
        sscanf(strnodecp(sed_GetScratchPad(sed)), "%ld", (long *) sed_GetVar(sed, fieldno));
    }
}