1 | /*
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2 | WCharacter.h - Character utility functions for Wiring & Arduino
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3 | Copyright (c) 2010 Hernando Barragan. All right reserved.
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4 |
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5 | This library is free software; you can redistribute it and/or
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6 | modify it under the terms of the GNU Lesser General Public
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7 | License as published by the Free Software Foundation; either
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8 | version 2.1 of the License, or (at your option) any later version.
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9 |
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10 | This library is distributed in the hope that it will be useful,
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11 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 | Lesser General Public License for more details.
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14 |
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15 | You should have received a copy of the GNU Lesser General Public
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16 | License along with this library; if not, write to the Free Software
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17 | Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18 | */
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19 |
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20 | #ifndef Character_h
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21 | #define Character_h
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22 |
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23 | #include <ctype.h>
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24 |
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25 | #ifdef __cplusplus
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26 | extern "C" {
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27 | #endif
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28 |
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29 | // WCharacter.h prototypes
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30 | #if defined ( __GNUC__ )
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31 | inline boolean isAlphaNumeric(int c) __attribute__((always_inline));
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32 | inline boolean isAlpha(int c) __attribute__((always_inline));
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33 | inline boolean isAscii(int c) __attribute__((always_inline));
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34 | inline boolean isWhitespace(int c) __attribute__((always_inline));
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35 | inline boolean isControl(int c) __attribute__((always_inline));
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36 | inline boolean isDigit(int c) __attribute__((always_inline));
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37 | inline boolean isGraph(int c) __attribute__((always_inline));
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38 | inline boolean isLowerCase(int c) __attribute__((always_inline));
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39 | inline boolean isPrintable(int c) __attribute__((always_inline));
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40 | inline boolean isPunct(int c) __attribute__((always_inline));
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41 | inline boolean isSpace(int c) __attribute__((always_inline));
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42 | inline boolean isUpperCase(int c) __attribute__((always_inline));
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43 | inline boolean isHexadecimalDigit(int c) __attribute__((always_inline));
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44 | inline int toAscii(int c) __attribute__((always_inline));
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45 | inline int toLowerCase(int c) __attribute__((always_inline));
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46 | inline int toUpperCase(int c)__attribute__((always_inline));
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47 | #elif defined ( __ICCARM__ )
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48 | #endif
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49 |
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50 | // Checks for an alphanumeric character.
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51 | // It is equivalent to (isalpha(c) || isdigit(c)).
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52 | inline boolean isAlphaNumeric(int c)
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53 | {
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54 | return ( isalnum(c) == 0 ? false : true);
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55 | }
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56 |
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57 |
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58 | // Checks for an alphabetic character.
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59 | // It is equivalent to (isupper(c) || islower(c)).
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60 | inline boolean isAlpha(int c)
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61 | {
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62 | return ( isalpha(c) == 0 ? false : true);
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63 | }
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64 |
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65 |
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66 | // Checks whether c is a 7-bit unsigned char value
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67 | // that fits into the ASCII character set.
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68 | inline boolean isAscii(int c)
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69 | {
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70 | /* return ( isascii(c) == 0 ? false : true); */
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71 | return ( (c & ~0x7f) != 0 ? false : true);
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72 | }
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73 |
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74 |
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75 | // Checks for a blank character, that is, a space or a tab.
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76 | inline boolean isWhitespace(int c)
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77 | {
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78 | return ( isblank (c) == 0 ? false : true);
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79 | }
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80 |
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81 |
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82 | // Checks for a control character.
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83 | inline boolean isControl(int c)
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84 | {
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85 | return ( iscntrl (c) == 0 ? false : true);
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86 | }
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87 |
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88 |
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89 | // Checks for a digit (0 through 9).
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90 | inline boolean isDigit(int c)
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91 | {
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92 | return ( isdigit (c) == 0 ? false : true);
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93 | }
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94 |
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95 |
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96 | // Checks for any printable character except space.
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97 | inline boolean isGraph(int c)
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98 | {
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99 | return ( isgraph (c) == 0 ? false : true);
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100 | }
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101 |
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102 |
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103 | // Checks for a lower-case character.
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104 | inline boolean isLowerCase(int c)
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105 | {
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106 | return (islower (c) == 0 ? false : true);
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107 | }
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108 |
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109 |
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110 | // Checks for any printable character including space.
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111 | inline boolean isPrintable(int c)
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112 | {
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113 | return ( isprint (c) == 0 ? false : true);
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114 | }
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115 |
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116 |
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117 | // Checks for any printable character which is not a space
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118 | // or an alphanumeric character.
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119 | inline boolean isPunct(int c)
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120 | {
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121 | return ( ispunct (c) == 0 ? false : true);
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122 | }
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123 |
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124 |
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125 | // Checks for white-space characters. For the avr-libc library,
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126 | // these are: space, formfeed ('\f'), newline ('\n'), carriage
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127 | // return ('\r'), horizontal tab ('\t'), and vertical tab ('\v').
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128 | inline boolean isSpace(int c)
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129 | {
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130 | return ( isspace (c) == 0 ? false : true);
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131 | }
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132 |
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133 |
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134 | // Checks for an uppercase letter.
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135 | inline boolean isUpperCase(int c)
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136 | {
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137 | return ( isupper (c) == 0 ? false : true);
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138 | }
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139 |
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140 |
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141 | // Checks for a hexadecimal digits, i.e. one of 0 1 2 3 4 5 6 7
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142 | // 8 9 a b c d e f A B C D E F.
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143 | inline boolean isHexadecimalDigit(int c)
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144 | {
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145 | return ( isxdigit (c) == 0 ? false : true);
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146 | }
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147 |
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148 |
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149 | // Converts c to a 7-bit unsigned char value that fits into the
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150 | // ASCII character set, by clearing the high-order bits.
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151 | inline int toAscii(int c)
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152 | {
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153 | /* return toascii (c); */
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154 | return (c & 0x7f);
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155 | }
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156 |
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157 |
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158 | // Warning:
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159 | // Many people will be unhappy if you use this function.
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160 | // This function will convert accented letters into random
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161 | // characters.
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162 |
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163 | // Converts the letter c to lower case, if possible.
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164 | inline int toLowerCase(int c)
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165 | {
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166 | return tolower (c);
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167 | }
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168 |
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169 |
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170 | // Converts the letter c to upper case, if possible.
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171 | inline int toUpperCase(int c)
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172 | {
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173 | return toupper (c);
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174 | }
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175 |
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176 | #ifdef __cplusplus
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177 | }
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178 | #endif
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179 |
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180 | #endif
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