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    Length: 1735 (0x6c7)
    Types: TextFile
    Names: »main.c++«

└─⟦a0efdde77⟧ Bits:30001252 EUUGD11 Tape, 1987 Spring Conference Helsinki
    └─⟦this⟧ »EUUGD11/euug-87hel/sec1/image/scale/main.c++« 

TextFile

/*
    Main routine for scaling image
    Syntax of scale is:
    scale scale [increment [input.var [output.var]]]
*/

#include <stream.h>
#include <stdio.h>
#include <string.h>
#include <vartools.h++>

int
main ( int argc , char *argv[] )
    {
    switch(argc)
	{
	// if just scale given (acts as a pipe)
    case 2:
	scale(atof(argv[1]),0.,stdin,stdout,"");
    break;
	// if just scale and increment given (acts as a pipe)
    case 3:
	scale(atof(argv[1]),atof(argv[2]),stdin,stdout,"");
    break;
	// if scale, increment and input file given (output to stdout)
    case 4:
	    {
	    FILE *input;
	    if(NULL == (input = fopen(argv[3],"r")))
		{
		char * string = form("Could not open %s for reading:",argv[3]);
		perror(string);
		return 2;
		}
	    scale(atof(argv[1]),atof(argv[2]),input,stdout,"");
	    }
    break;
	// if scale, increment, input file and output file given
    case 5:
	    {
	    FILE *input;
	    FILE *output;
	    if(NULL == (input = fopen(argv[3],"r")))
		{
		char * string = form("Could not open %s for reading:",argv[3]);
		perror(string);
		return 2;
		}
	    if(NULL == (output = fopen(argv[4],"w")))
		{
		char * string = form("Could not open %s for writing:",argv[3]);
		perror(string);
		return 3;
		}
	    scale(atof(argv[1]),atof(argv[2]),input,output,"");
	    }
    break;
	// if wrong arguments given
    default:
	cerr << "Syntax is: scale scale [increment [input.var [output.var]]]\n";
	return 1;
    break;
	}
    
    return 0;
    }

/*
Copyright (C) 1986, David Sher in the University of Rochester
Permission is granted to any individual or institution to use, copy, or
redistribute this software so long as it is not sold for profit, provided
this copyright notice is retained.
*/