contrib/less/mkhelp.c

   1 /*
   2  * Copyright (C) 1984-2012  Mark Nudelman
   3  *
   4  * You may distribute under the terms of either the GNU General Public
   5  * License or the Less License, as specified in the README file.
   6  *
   7  * For more information, see the README file.
   8  */
   9
  10
  11 /*
  12  * Silly little program to generate the help.c source file
  13  * from the less.hlp text file.
  14  * help.c just contains a char array whose contents are
  15  * the contents of less.hlp.
  16  */
  17
  18 #include <stdio.h>
  19
  20         int
  21 main(argc, argv)
  22         int argc;
  23         char *argv[];
  24 {
  25         int ch;
  26         int prevch;
  27
  28         printf("/* This file was generated by mkhelp from less.hlp */\n");
  29         printf("#include \"less.h\"\n");
  30         printf("constant char helpdata[] = {\n");
  31         ch = 0;
  32         while (prevch = ch, (ch = getchar()) != EOF)
  33         {
  34                 switch (ch)
  35                 {
  36                 case '\'':
  37                         printf("'\\'',");
  38                         break;
  39                 case '\\':
  40                         printf("'\\\\',");
  41                         break;
  42                 case '\b':
  43                         printf("'\\b',");
  44                         break;
  45                 case '\t':
  46                         printf("'\\t',");
  47                         break;
  48                 case '\n':
  49                         if (prevch != '\r')
  50                                 printf("'\\n',\n");
  51                         break;
  52                 case '\r':
  53                         if (prevch != '\n')
  54                                 printf("'\\n',\n");
  55                         break;
  56                 default:
  57                         if (ch >= ' ' && ch < 0x7f)
  58                                 printf("'%c',", ch);
  59                         else
  60                                 printf("0x%02x,", ch);
  61                         break;
  62                 }
  63         }
  64         /* Add an extra null char to avoid having a trailing comma. */
  65         printf(" 0 };\n");
  66         printf("constant int size_helpdata = sizeof(helpdata) - 1;\n");
  67         return (0);
  68 }