otherio.c

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#include <../../nrnconf.h>
 
/**************************************************************************
**
** Copyright (C) 1993 David E. Steward & Zbigniew Leyk, all rights reserved.
**
**               Meschach Library
** 
** This Meschach Library is provided "as is" without any express 
** or implied warranty of any kind with respect to this software. 
** In particular the authors shall not be liable for any direct, 
** indirect, special, incidental or consequential damages arising 
** in any way from use of the software.
** 
** Everyone is granted permission to copy, modify and redistribute this
** Meschach Library, provided:
**  1.  All copies contain this copyright notice.
**  2.  All modified copies shall carry a notice stating who
**      made the last modification and the date of such modification.
**  3.  No charge is made for this software or works derived from it.  
**      This clause shall not be construed as constraining other software
**      distributed on the same medium as this software, nor is a
**      distribution fee considered a charge.
**
***************************************************************************/
 
 
/*
    File for doing assorted I/O operations not invlolving
    MAT/VEC/PERM objects
*/
static  char    rcsid[] = "otherio.c,v 1.1 1997/12/04 17:55:44 hines Exp";
 
#include    <stdio.h>
#include    <ctype.h>
#include    "matrix.h"
 
 
 
/* scratch area -- enough for a single line */
static  char    scratch[MAXLINE+1];
 
/* default value for fy_or_n */
static  int y_n_dflt = TRUE;
 
/* fy_or_n -- yes-or-no to question is string s
    -- question written to stderr, input from fp 
    -- if fp is NOT a tty then return y_n_dflt */
int fy_or_n(fp,s)
FILE    *fp;
char    *s;
{
    char    *cp;
 
    if ( ! isatty(fileno(fp)) )
        return y_n_dflt;
 
    for ( ; ; )
    {
        fprintf(stderr,"%s (y/n) ? ",s);
        if ( fgets(scratch,MAXLINE,fp)==NULL )
            error(E_INPUT,"fy_or_n");
        cp = scratch;
        while ( isspace(*cp) )
            cp++;
        if ( *cp == 'y' || *cp == 'Y' )
            return TRUE;
        if ( *cp == 'n' || *cp == 'N' )
            return FALSE;
        fprintf(stderr,"Please reply with 'y' or 'Y' for yes ");
        fprintf(stderr,"and 'n' or 'N' for no.\n");
    }
}
 
/* yn_dflt -- sets the value of y_n_dflt to val */
int yn_dflt(val)
int val;
{   return y_n_dflt = val;      }
 
/* fin_int -- return integer read from file/stream fp
    -- prompt s on stderr if fp is a tty
    -- check that x lies between low and high: re-prompt if
        fp is a tty, error exit otherwise
    -- ignore check if low > high       */
int fin_int(fp,s,low,high)
FILE    *fp;
char    *s;
int low, high;
{
    int retcode, x;
 
    if ( ! isatty(fileno(fp)) )
    {
        skipjunk(fp);
        if ( (retcode=fscanf(fp,"%d",&x)) == EOF )
            error(E_INPUT,"fin_int");
        if ( retcode <= 0 )
            error(E_FORMAT,"fin_int");
        if ( low <= high && ( x < low || x > high ) )
            error(E_BOUNDS,"fin_int");
        return x;
    }
 
    for ( ; ; )
    {
        fprintf(stderr,"%s: ",s);
        if ( fgets(scratch,MAXLINE,stdin)==NULL )
            error(E_INPUT,"fin_int");
        retcode = sscanf(scratch,"%d",&x);
        if ( ( retcode==1 && low > high ) ||
                    ( x >= low && x <= high ) )
            return x;
        fprintf(stderr,"Please type an integer in range [%d,%d].\n",
                            low,high);
    }
}
 
 
/* fin_double -- return double read from file/stream fp
    -- prompt s on stderr if fp is a tty
    -- check that x lies between low and high: re-prompt if
        fp is a tty, error exit otherwise
    -- ignore check if low > high       */
double  fin_double(fp,s,low,high)
FILE    *fp;
char    *s;
double  low, high;
{
    Real    retcode, x;
 
    if ( ! isatty(fileno(fp)) )
    {
        skipjunk(fp);
#if REAL == DOUBLE
        if ( (retcode=fscanf(fp,"%lf",&x)) == EOF )
#elif REAL == FLOAT
        if ( (retcode=fscanf(fp,"%f",&x)) == EOF )
#endif
            error(E_INPUT,"fin_double");
        if ( retcode <= 0 )
            error(E_FORMAT,"fin_double");
        if ( low <= high && ( x < low || x > high ) )
            error(E_BOUNDS,"fin_double");
        return (double)x;
    }
 
    for ( ; ; )
    {
        fprintf(stderr,"%s: ",s);
        if ( fgets(scratch,MAXLINE,stdin)==NULL )
            error(E_INPUT,"fin_double");
#if REAL == DOUBLE
        retcode = sscanf(scratch,"%lf",&x);
#elif REAL == FLOAT 
        retcode = sscanf(scratch,"%f",&x);
#endif
        if ( ( retcode==1 && low > high ) ||
                    ( x >= low && x <= high ) )
            return (double)x;
        fprintf(stderr,"Please type an double in range [%g,%g].\n",
                            low,high);
    }
}