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#include <stdio.h>
#include <string.h>
#include "local_proto.h"
/****************************************************************
*
* check_scale (text)
*
* text of scale request to be checked
***************************************************************/
int check_scale (char *text)
{
char unit1[30];
char unit2[30];
char equals[30];
char dummy[2];
long n1,n2;
double u1;
/*
* absolute horizontal width specification
* x inches
* x panels
* convert text to 1 : n
*/
u1 = 0;
*unit1 = 0;
*dummy = 0;
if (sscanf (text, "%lf %s %1s", &u1, unit1, dummy) == 2 && *dummy == 0)
{
if (strncmp (unit1,"panel",5) == 0 && u1 > 0)
return 1;
if (strncmp (unit1,"inch",4) == 0 && u1 > 0)
return 1;
}
/*
* unitless ratio specification
* n : m
*/
*dummy = 0;
n1 = n2 = 0;
if (sscanf (text,"%ld : %ld%1s", &n1,&n2,dummy) == 2)
{
if (n1 <= 0 || n2 <= 0 || *dummy)
return 0;
return 1;
}
/*
*
* ratio specification with unit conversions
* x inches equals y miles
* x inches equals y meters
* x inches equals y kilometers
*/
*unit1 = 0;
*unit2 = 0;
*equals = 0;
n1 = n2 = 0;
if (sscanf (text, "%ld %s %s %ld %s", &n1, unit1, equals, &n2, unit2) == 5)
{
if (n1 <= 0 || n2 <= 0)
return 0 ;
if (strcmp (equals, "=") != 0 && strncmp (equals,"equal",5) != 0)
return 0 ;
/* unit1: inches */
if (strncmp (unit1,"inch",4) == 0)
u1 = 1;
else
return 0;
/* unit2: meters, miles, kilometers */
if (strncmp (unit2,"mile",4) == 0)
return 1;
if (strncmp (unit2,"meter",5) == 0)
return 1;
if (strncmp (unit2, "kilometer", 9) == 0)
return 1;
}
return 0;
}
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