contrib/less/lesskey.h

   1 /*
   2  * Copyright (C) 1984-2022  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 #include "xbuf.h"
  11
  12 /*
  13  * Format of a lesskey file:
  14  *
  15  *      LESSKEY_MAGIC (4 bytes)
  16  *       sections...
  17  *      END_LESSKEY_MAGIC (4 bytes)
  18  *
  19  * Each section is:
  20  *
  21  *      section_MAGIC (1 byte)
  22  *      section_length (2 bytes)
  23  *      key table (section_length bytes)
  24  */
  25 #define C0_LESSKEY_MAGIC        '\0'
  26 #define C1_LESSKEY_MAGIC        'M'
  27 #define C2_LESSKEY_MAGIC        '+'
  28 #define C3_LESSKEY_MAGIC        'G'
  29
  30 #define CMD_SECTION             'c'
  31 #define EDIT_SECTION            'e'
  32 #define VAR_SECTION             'v'
  33 #define END_SECTION             'x'
  34
  35 #define C0_END_LESSKEY_MAGIC    'E'
  36 #define C1_END_LESSKEY_MAGIC    'n'
  37 #define C2_END_LESSKEY_MAGIC    'd'
  38
  39 /* */
  40 #define KRADIX          64
  41
  42 struct lesskey_cmdname
  43 {
  44         char *cn_name;
  45         int cn_action;
  46 };
  47
  48 struct lesskey_table
  49 {
  50         struct lesskey_cmdname *names;
  51         struct xbuffer buf;
  52         int is_var;
  53 };
  54
  55 struct lesskey_tables
  56 {
  57         struct lesskey_table *currtable;
  58         struct lesskey_table cmdtable;
  59         struct lesskey_table edittable;
  60         struct lesskey_table vartable;
  61 };
  62
  63 extern int parse_lesskey(char *infile, struct lesskey_tables *tables);