contrib/less/mkhelp.c

   1 /*
   2  * Copyright (C) 1984-2015  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(int argc, char *argv[])
  22 {
  23         int ch;
  24         int prevch;
  25
  26         printf("/* This file was generated by mkhelp from less.hlp */\n");
  27         printf("#include \"less.h\"\n");
  28         printf("constant char helpdata[] = {\n");
  29         ch = 0;
  30         while (prevch = ch, (ch = getchar()) != EOF)
  31         {
  32                 switch (ch)
  33                 {
  34                 case '\'':
  35                         printf("'\\'',");
  36                         break;
  37                 case '\\':
  38                         printf("'\\\\',");
  39                         break;
  40                 case '\b':
  41                         printf("'\\b',");
  42                         break;
  43                 case '\t':
  44                         printf("'\\t',");
  45                         break;
  46                 case '\n':
  47                         if (prevch != '\r')
  48                                 printf("'\\n',\n");
  49                         break;
  50                 case '\r':
  51                         if (prevch != '\n')
  52                                 printf("'\\n',\n");
  53                         break;
  54                 default:
  55                         if (ch >= ' ' && ch < 0x7f)
  56                                 printf("'%c',", ch);
  57                         else
  58                                 printf("0x%02x,", ch);
  59                         break;
  60                 }
  61         }
  62         /* Add an extra null char to avoid having a trailing comma. */
  63         printf(" 0 };\n");
  64         printf("constant int size_helpdata = sizeof(helpdata) - 1;\n");
  65         return (0);
  66 }