| 1 | /**************************************************************************
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| 2 | *
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| 3 | * sum.c -- byte summing program
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| 4 | * Copyright (C) 1995 Tim Shimmin
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| 5 | *
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| 6 | * This program is free software; you can redistribute it and/or modify
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| 7 | * it under the terms of the GNU General Public License as published by
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| 8 | * the Free Software Foundation; either version 2 of the License, or
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| 9 | * (at your option) any later version.
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| 10 | *
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| 11 | * This program is distributed in the hope that it will be useful,
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| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 14 | * GNU General Public License for more details.
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| 15 | *
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| 16 | * You should have received a copy of the GNU General Public License
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| 17 | * along with this program; if not, write to the Free Software
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| 18 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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| 19 | *
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| 20 | * $Id: simple_sum.c 439 1999-08-10 21:23:37Z sjboddie $
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| 21 | *
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| 22 | **************************************************************************/
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| 23 |
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| 24 | /*
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| 25 | $Log$
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| 26 | Revision 1.1 1999/08/10 21:18:33 sjboddie
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| 27 | renamed mg-1.3d directory mg
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| 28 |
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| 29 | Revision 1.1 1998/11/17 09:36:00 rjmcnab
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| 30 | *** empty log message ***
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| 31 |
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| 32 | */
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| 33 |
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| 34 | /*
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| 35 | * If given -l option then just prints the length.
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| 36 | * Normally prints the sum and the length for the file.
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| 37 | */
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| 38 |
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| 39 | static int length_only = 0;
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| 40 |
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| 41 | #include <stdio.h>
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| 42 |
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| 43 | void
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| 44 | output_sum(fname, input_file, output_file)
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| 45 | char *fname;
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| 46 | FILE *input_file;
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| 47 | FILE *output_file;
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| 48 | {
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| 49 | int ch = '\0';
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| 50 | unsigned long sum = 0;
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| 51 | unsigned long num_bytes = 0;
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| 52 |
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| 53 | while((ch = getc(input_file))!=EOF){
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| 54 | sum += ch;
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| 55 | num_bytes++;
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| 56 | }
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| 57 |
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| 58 | if (length_only)
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| 59 | fprintf(output_file, "%s: %ld\n", fname, num_bytes);
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| 60 | else
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| 61 | fprintf(output_file, "%s: %ld %ld\n", fname, sum, num_bytes);
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| 62 | }
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| 63 |
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| 64 | void
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| 65 | main(argc, argv)
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| 66 | int argc;
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| 67 | char *argv[];
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| 68 | {
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| 69 | int i = 0;
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| 70 |
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| 71 | /* use stdin */
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| 72 | if (argc == 1){
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| 73 | output_sum("-", stdin, stdout);
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| 74 | exit(0);
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| 75 | }
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| 76 |
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| 77 | /* use args as file names for input */
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| 78 | for (i=1;i<argc; i++){
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| 79 | char *fname = argv[i];
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| 80 | FILE *input_file = NULL;
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| 81 |
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| 82 | if (!length_only && (argv[i][0] == '-') && (argv[i][1] =='l') )
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| 83 | {
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| 84 | length_only = 1;
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| 85 | continue;
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| 86 | }
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| 87 |
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| 88 | input_file = fopen(fname, "r");
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| 89 | if (!input_file){
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| 90 | fprintf(stderr,"Could not open %s\n", fname);
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| 91 | continue;
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| 92 | }
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| 93 | else{
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| 94 | output_sum(fname, input_file, stdout);
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| 95 | fclose(input_file);
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| 96 | }
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| 97 | }/*for*/
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| 98 | exit(0);
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| 99 |
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| 100 | }
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