| 1 | /* |
| 2 | WCharacter.h - Character utility functions for Wiring & Arduino |
| 3 | Copyright (c) 2010 Hernando Barragan. All right reserved. |
| 4 | |
| 5 | This library is free software; you can redistribute it and/or |
| 6 | modify it under the terms of the GNU Lesser General Public |
| 7 | License as published by the Free Software Foundation; either |
| 8 | version 2.1 of the License, or (at your option) any later version. |
| 9 | |
| 10 | This library is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 13 | Lesser General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU Lesser General Public |
| 16 | License along with this library; if not, write to the Free Software |
| 17 | Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 18 | */ |
| 19 |
|
| 20 | #ifndef Character_h |
| 21 | #define Character_h |
| 22 |
|
| 23 | #include <ctype.h> |
| 24 |
|
| 25 | // WCharacter.h prototypes |
| 26 | inline boolean isAlphaNumeric(int c) __attribute__((always_inline)); |
| 27 | inline boolean isAlpha(int c) __attribute__((always_inline)); |
| 28 | inline boolean isAscii(int c) __attribute__((always_inline)); |
| 29 | inline boolean isWhitespace(int c) __attribute__((always_inline)); |
| 30 | inline boolean isControl(int c) __attribute__((always_inline)); |
| 31 | inline boolean isDigit(int c) __attribute__((always_inline)); |
| 32 | inline boolean isGraph(int c) __attribute__((always_inline)); |
| 33 | inline boolean isLowerCase(int c) __attribute__((always_inline)); |
| 34 | inline boolean isPrintable(int c) __attribute__((always_inline)); |
| 35 | inline boolean isPunct(int c) __attribute__((always_inline)); |
| 36 | inline boolean isSpace(int c) __attribute__((always_inline)); |
| 37 | inline boolean isUpperCase(int c) __attribute__((always_inline)); |
| 38 | inline boolean isHexadecimalDigit(int c) __attribute__((always_inline)); |
| 39 | inline int toAscii(int c) __attribute__((always_inline)); |
| 40 | inline int toLowerCase(int c) __attribute__((always_inline)); |
| 41 | inline int toUpperCase(int c)__attribute__((always_inline)); |
| 42 |
|
| 43 |
|
| 44 | // Checks for an alphanumeric character. |
| 45 | // It is equivalent to (isalpha(c) || isdigit(c)). |
| 46 | inline boolean isAlphaNumeric(int c) |
| 47 | { |
| 48 | return ( isalnum(c) == 0 ? false : true); |
| 49 | } |
| 50 |
|
| 51 |
|
| 52 | // Checks for an alphabetic character. |
| 53 | // It is equivalent to (isupper(c) || islower(c)). |
| 54 | inline boolean isAlpha(int c) |
| 55 | { |
| 56 | return ( isalpha(c) == 0 ? false : true); |
| 57 | } |
| 58 |
|
| 59 |
|
| 60 | // Checks whether c is a 7-bit unsigned char value |
| 61 | // that fits into the ASCII character set. |
| 62 | inline boolean isAscii(int c) |
| 63 | { |
| 64 | return ( isascii (c) == 0 ? false : true); |
| 65 | } |
| 66 |
|
| 67 |
|
| 68 | // Checks for a blank character, that is, a space or a tab. |
| 69 | inline boolean isWhitespace(int c) |
| 70 | { |
| 71 | return ( isblank (c) == 0 ? false : true); |
| 72 | } |
| 73 |
|
| 74 |
|
| 75 | // Checks for a control character. |
| 76 | inline boolean isControl(int c) |
| 77 | { |
| 78 | return ( iscntrl (c) == 0 ? false : true); |
| 79 | } |
| 80 |
|
| 81 |
|
| 82 | // Checks for a digit (0 through 9). |
| 83 | inline boolean isDigit(int c) |
| 84 | { |
| 85 | return ( isdigit (c) == 0 ? false : true); |
| 86 | } |
| 87 |
|
| 88 |
|
| 89 | // Checks for any printable character except space. |
| 90 | inline boolean isGraph(int c) |
| 91 | { |
| 92 | return ( isgraph (c) == 0 ? false : true); |
| 93 | } |
| 94 |
|
| 95 |
|
| 96 | // Checks for a lower-case character. |
| 97 | inline boolean isLowerCase(int c) |
| 98 | { |
| 99 | return (islower (c) == 0 ? false : true); |
| 100 | } |
| 101 |
|
| 102 |
|
| 103 | // Checks for any printable character including space. |
| 104 | inline boolean isPrintable(int c) |
| 105 | { |
| 106 | return ( isprint (c) == 0 ? false : true); |
| 107 | } |
| 108 |
|
| 109 |
|
| 110 | // Checks for any printable character which is not a space |
| 111 | // or an alphanumeric character. |
| 112 | inline boolean isPunct(int c) |
| 113 | { |
| 114 | return ( ispunct (c) == 0 ? false : true); |
| 115 | } |
| 116 |
|
| 117 |
|
| 118 | // Checks for white-space characters. For the avr-libc library, |
| 119 | // these are: space, formfeed ('\f'), newline ('\n'), carriage |
| 120 | // return ('\r'), horizontal tab ('\t'), and vertical tab ('\v'). |
| 121 | inline boolean isSpace(int c) |
| 122 | { |
| 123 | return ( isspace (c) == 0 ? false : true); |
| 124 | } |
| 125 |
|
| 126 |
|
| 127 | // Checks for an uppercase letter. |
| 128 | inline boolean isUpperCase(int c) |
| 129 | { |
| 130 | return ( isupper (c) == 0 ? false : true); |
| 131 | } |
| 132 |
|
| 133 |
|
| 134 | // Checks for a hexadecimal digits, i.e. one of 0 1 2 3 4 5 6 7 |
| 135 | // 8 9 a b c d e f A B C D E F. |
| 136 | inline boolean isHexadecimalDigit(int c) |
| 137 | { |
| 138 | return ( isxdigit (c) == 0 ? false : true); |
| 139 | } |
| 140 |
|
| 141 |
|
| 142 | // Converts c to a 7-bit unsigned char value that fits into the |
| 143 | // ASCII character set, by clearing the high-order bits. |
| 144 | inline int toAscii(int c) |
| 145 | { |
| 146 | return toascii (c); |
| 147 | } |
| 148 |
|
| 149 |
|
| 150 | // Warning: |
| 151 | // Many people will be unhappy if you use this function. |
| 152 | // This function will convert accented letters into random |
| 153 | // characters. |
| 154 |
|
| 155 | // Converts the letter c to lower case, if possible. |
| 156 | inline int toLowerCase(int c) |
| 157 | { |
| 158 | return tolower (c); |
| 159 | } |
| 160 |
|
| 161 |
|
| 162 | // Converts the letter c to upper case, if possible. |
| 163 | inline int toUpperCase(int c) |
| 164 | { |
| 165 | return toupper (c); |
| 166 | } |
| 167 |
|
| 168 | #endif |
| 169 |
|
Index