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 3745 2003-02-20 21:20:24Z mdewsnip $
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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 2003/02/20 21:20:24 mdewsnip
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27 | Addition of MG package for search and retrieval
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28 |
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29 | Revision 1.1 1999/08/10 21:18:33 sjboddie
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30 | renamed mg-1.3d directory mg
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31 |
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32 | Revision 1.1 1998/11/17 09:36:00 rjmcnab
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33 | *** empty log message ***
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34 |
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35 | */
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36 |
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37 | /*
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38 | * If given -l option then just prints the length.
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39 | * Normally prints the sum and the length for the file.
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40 | */
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41 |
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42 | static int length_only = 0;
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43 |
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44 | #include <stdio.h>
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45 |
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46 | void
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47 | output_sum(fname, input_file, output_file)
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48 | char *fname;
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49 | FILE *input_file;
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50 | FILE *output_file;
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51 | {
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52 | int ch = '\0';
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53 | unsigned long sum = 0;
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54 | unsigned long num_bytes = 0;
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55 |
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56 | while((ch = getc(input_file))!=EOF){
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57 | sum += ch;
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58 | num_bytes++;
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59 | }
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60 |
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61 | if (length_only)
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62 | fprintf(output_file, "%s: %ld\n", fname, num_bytes);
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63 | else
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64 | fprintf(output_file, "%s: %ld %ld\n", fname, sum, num_bytes);
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65 | }
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66 |
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67 | void
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68 | main(argc, argv)
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69 | int argc;
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70 | char *argv[];
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71 | {
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72 | int i = 0;
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73 |
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74 | /* use stdin */
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75 | if (argc == 1){
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76 | output_sum("-", stdin, stdout);
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77 | exit(0);
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78 | }
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79 |
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80 | /* use args as file names for input */
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81 | for (i=1;i<argc; i++){
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82 | char *fname = argv[i];
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83 | FILE *input_file = NULL;
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84 |
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85 | if (!length_only && (argv[i][0] == '-') && (argv[i][1] =='l') )
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86 | {
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87 | length_only = 1;
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88 | continue;
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89 | }
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90 |
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91 | input_file = fopen(fname, "r");
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92 | if (!input_file){
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93 | fprintf(stderr,"Could not open %s\n", fname);
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94 | continue;
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95 | }
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96 | else{
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97 | output_sum(fname, input_file, stdout);
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98 | fclose(input_file);
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99 | }
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100 | }/*for*/
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101 | exit(0);
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102 |
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103 | }
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