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1 /* chardefs.h -- Character definitions for readline. */ |
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2 |
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3 /* Copyright (C) 1994 Free Software Foundation, Inc. |
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4 |
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5 This file is part of the GNU Readline Library, a library for |
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6 reading lines of text with interactive input and history editing. |
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7 |
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8 The GNU Readline Library is free software; you can redistribute it |
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9 and/or modify it under the terms of the GNU General Public License |
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10 as published by the Free Software Foundation; either version 1, or |
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11 (at your option) any later version. |
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12 |
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13 The GNU Readline Library is distributed in the hope that it will be |
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14 useful, but WITHOUT ANY WARRANTY; without even the implied warranty |
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15 of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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16 GNU General Public License for more details. |
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17 |
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18 The GNU General Public License is often shipped with GNU software, and |
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19 is generally kept in a file called COPYING or LICENSE. If you do not |
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20 have a copy of the license, write to the Free Software Foundation, |
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21 675 Mass Ave, Cambridge, MA 02139, USA. */ |
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22 |
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23 #ifndef _CHARDEFS_H |
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24 #define _CHARDEFS_H |
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25 |
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26 #ifdef __cplusplus |
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27 extern "C" { |
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28 #endif |
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29 |
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30 #include <ctype.h> |
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31 |
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32 #if defined (HAVE_STRING_H) |
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33 # include <string.h> |
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34 #else |
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35 # include <strings.h> |
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36 #endif /* HAVE_STRING_H */ |
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37 |
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38 #ifndef whitespace |
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39 #define whitespace(c) (((c) == ' ') || ((c) == '\t')) |
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40 #endif |
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41 |
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42 #ifdef CTRL |
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43 #undef CTRL |
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44 #endif |
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45 |
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46 /* Some character stuff. */ |
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47 #define control_character_threshold 0x020 /* Smaller than this is control. */ |
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48 #define control_character_mask 0x1f /* 0x20 - 1 */ |
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49 #define meta_character_threshold 0x07f /* Larger than this is Meta. */ |
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50 #define control_character_bit 0x40 /* 0x000000, must be off. */ |
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51 #define meta_character_bit 0x080 /* x0000000, must be on. */ |
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52 #define largest_char 255 /* Largest character value. */ |
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53 |
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54 #define CTRL_CHAR(c) ((c) < control_character_threshold) |
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55 #define META_CHAR(c) ((c) > meta_character_threshold && (c) <= largest_char) |
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56 |
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57 #define CTRL(c) ((c) & control_character_mask) |
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58 #define META(c) ((c) | meta_character_bit) |
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59 |
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60 #define UNMETA(c) ((c) & (~meta_character_bit)) |
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61 #define UNCTRL(c) to_upper(((c)|control_character_bit)) |
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62 |
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63 /* Old versions |
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64 #define lowercase_p(c) (((c) > ('a' - 1) && (c) < ('z' + 1))) |
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65 #define uppercase_p(c) (((c) > ('A' - 1) && (c) < ('Z' + 1))) |
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66 #define digit_p(c) ((c) >= '0' && (c) <= '9') |
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67 */ |
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68 |
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69 #define lowercase_p(c) (islower(c)) |
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70 #define uppercase_p(c) (isupper(c)) |
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71 #define digit_p(x) (isdigit (x)) |
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72 |
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73 #define pure_alphabetic(c) (lowercase_p(c) || uppercase_p(c)) |
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74 |
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75 /* Old versions |
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76 # define to_upper(c) (lowercase_p(c) ? ((c) - 32) : (c)) |
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77 # define to_lower(c) (uppercase_p(c) ? ((c) + 32) : (c)) |
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78 */ |
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79 |
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80 #ifndef to_upper |
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81 # define to_upper(c) (islower(c) ? toupper(c) : (c)) |
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82 # define to_lower(c) (isupper(c) ? tolower(c) : (c)) |
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83 #endif |
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84 |
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85 #ifndef digit_value |
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86 #define digit_value(x) ((x) - '0') |
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87 #endif |
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88 |
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89 #ifndef NEWLINE |
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90 #define NEWLINE '\n' |
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91 #endif |
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92 |
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93 #ifndef RETURN |
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94 #define RETURN CTRL('M') |
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95 #endif |
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96 |
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97 #ifndef RUBOUT |
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98 #define RUBOUT 0x7f |
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99 #endif |
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100 |
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101 #ifndef TAB |
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102 #define TAB '\t' |
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103 #endif |
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104 |
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105 #ifdef ABORT_CHAR |
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106 #undef ABORT_CHAR |
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107 #endif |
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108 #define ABORT_CHAR CTRL('G') |
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109 |
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110 #ifdef PAGE |
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111 #undef PAGE |
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112 #endif |
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113 #define PAGE CTRL('L') |
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114 |
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115 #ifdef SPACE |
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116 #undef SPACE |
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117 #endif |
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118 #define SPACE ' ' /* XXX - was 0x20 */ |
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119 |
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120 #ifdef ESC |
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121 #undef ESC |
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122 #endif |
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123 |
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124 #define ESC CTRL('[') |
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125 |
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126 #ifdef __cplusplus |
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127 } |
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128 #endif |
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129 |
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130 #endif /* _CHARDEFS_H */ |
