src/TortoiseMerge/svninclude/svn_ctype.h

   1 /**
   2  * @copyright
   3  * ====================================================================
   4  *    Licensed to the Apache Software Foundation (ASF) under one
   5  *    or more contributor license agreements.  See the NOTICE file
   6  *    distributed with this work for additional information
   7  *    regarding copyright ownership.  The ASF licenses this file
   8  *    to you under the Apache License, Version 2.0 (the
   9  *    "License"); you may not use this file except in compliance
  10  *    with the License.  You may obtain a copy of the License at
  11  *
  12  *      http://www.apache.org/licenses/LICENSE-2.0
  13  *
  14  *    Unless required by applicable law or agreed to in writing,
  15  *    software distributed under the License is distributed on an
  16  *    "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  17  *    KIND, either express or implied.  See the License for the
  18  *    specific language governing permissions and limitations
  19  *    under the License.
  20  * ====================================================================
  21  * @endcopyright
  22  *
  23  * @file svn_ctype.h
  24  * @brief Character classification routines
  25  * @since New in 1.2.
  26  */
  27
  28 \f
  29 #ifndef SVN_CTYPE_H
  30 #define SVN_CTYPE_H
  31
  32 #include <apr.h>
  33
  34
  35 #ifdef __cplusplus
  36 extern "C" {
  37 #endif /* __cplusplus */
  38
  39
  40 /** Table of flags for character classification. */
  41 extern const apr_uint32_t *const svn_ctype_table;
  42
  43
  44 /** Check if @a c is in the character class described by @a flags.
  45  * The @a flags is a bitwise-or combination of @c SVN_CTYPE_*
  46  * constants. Uses #svn_ctype_table.
  47  */
  48 #define svn_ctype_test(c, flags) \
  49   (0 != (svn_ctype_table[(unsigned char)(c)] & (flags)))
  50
  51
  52 /**
  53  * @defgroup ctype_basic Basic character classification - 7-bit ASCII only
  54  * @{
  55  */
  56
  57 /* Basic character classes */
  58 #define SVN_CTYPE_CNTRL    0x0001 /**< Control character */
  59 #define SVN_CTYPE_SPACE    0x0002 /**< Whitespace */
  60 #define SVN_CTYPE_DIGIT    0x0004 /**< Decimal digit */
  61 #define SVN_CTYPE_UPPER    0x0008 /**< Uppercase letter */
  62 #define SVN_CTYPE_LOWER    0x0010 /**< Lowercase letter */
  63 #define SVN_CTYPE_PUNCT    0x0020 /**< Punctuation mark */
  64 #define SVN_CTYPE_XALPHA   0x0040 /**< Hexadecimal digits A to F */
  65 #define SVN_CTYPE_ASCII    0x0080 /**< ASCII subset*/
  66
  67 /* Derived character classes */
  68 /** ASCII letter */
  69 #define SVN_CTYPE_ALPHA    (SVN_CTYPE_LOWER | SVN_CTYPE_UPPER)
  70 /** ASCII letter or decimal digit */
  71 #define SVN_CTYPE_ALNUM    (SVN_CTYPE_ALPHA | SVN_CTYPE_DIGIT)
  72 /** ASCII hexadecimal digit */
  73 #define SVN_CTYPE_XDIGIT   (SVN_CTYPE_DIGIT | SVN_CTYPE_XALPHA)
  74 /** Printable ASCII except space */
  75 #define SVN_CTYPE_GRAPH    (SVN_CTYPE_PUNCT | SVN_CTYPE_ALNUM)
  76 /** All printable ASCII */
  77 #define SVN_CTYPE_PRINT    (SVN_CTYPE_GRAPH | SVN_CTYPE_SPACE)
  78
  79
  80 /** Check if @a c is an ASCII control character. */
  81 #define svn_ctype_iscntrl(c)  svn_ctype_test((c), SVN_CTYPE_CNTRL)
  82
  83 /** Check if @a c is an ASCII whitespace character. */
  84 #define svn_ctype_isspace(c)  svn_ctype_test((c), SVN_CTYPE_SPACE)
  85
  86 /** Check if @a c is an ASCII digit. */
  87 #define svn_ctype_isdigit(c)  svn_ctype_test((c), SVN_CTYPE_DIGIT)
  88
  89 /** Check if @a c is an ASCII uppercase letter. */
  90 #define svn_ctype_isupper(c)  svn_ctype_test((c), SVN_CTYPE_UPPER)
  91
  92 /** Check if @a c is an ASCII lowercase letter. */
  93 #define svn_ctype_islower(c)  svn_ctype_test((c), SVN_CTYPE_LOWER)
  94
  95 /** Check if @a c is an ASCII punctuation mark. */
  96 #define svn_ctype_ispunct(c)  svn_ctype_test((c), SVN_CTYPE_PUNCT)
  97
  98 /** Check if @a c is an ASCII character. */
  99 #define svn_ctype_isascii(c)  svn_ctype_test((c), SVN_CTYPE_ASCII)
 100
 101 /** Check if @a c is an ASCII letter. */
 102 #define svn_ctype_isalpha(c)  svn_ctype_test((c), SVN_CTYPE_ALPHA)
 103
 104 /** Check if @a c is an ASCII letter or decimal digit. */
 105 #define svn_ctype_isalnum(c)  svn_ctype_test((c), SVN_CTYPE_ALNUM)
 106
 107 /** Check if @a c is an ASCII hexadecimal digit. */
 108 #define svn_ctype_isxdigit(c) svn_ctype_test((c), SVN_CTYPE_XDIGIT)
 109
 110 /** Check if @a c is an ASCII graphical (visible printable) character. */
 111 #define svn_ctype_isgraph(c)  svn_ctype_test((c), SVN_CTYPE_GRAPH)
 112
 113 /** Check if @a c is an ASCII printable character. */
 114 #define svn_ctype_isprint(c)  svn_ctype_test((c), SVN_CTYPE_PRINT)
 115
 116 /** @} */
 117 \f
 118 /**
 119  * @defgroup ctype_extra Extended character classification
 120  * @{
 121  */
 122
 123 /* Basic extended character classes */
 124 #define SVN_CTYPE_UTF8LEAD 0x0100 /**< UTF-8 multibyte lead byte */
 125 #define SVN_CTYPE_UTF8CONT 0x0200 /**< UTF-8 multibyte non-lead byte */
 126 /* ### TBD
 127 #define SVN_CTYPE_XMLNAME  0x0400
 128 #define SVN_CTYPE_URISAFE  0x0800
 129 */
 130
 131 /* Derived extended character classes */
 132 /** Part of a UTF-8 multibyte character. */
 133 #define SVN_CTYPE_UTF8MBC  (SVN_CTYPE_UTF8LEAD | SVN_CTYPE_UTF8CONT)
 134 /** All valid UTF-8 bytes. */
 135 #define SVN_CTYPE_UTF8     (SVN_CTYPE_ASCII | SVN_CTYPE_UTF8MBC)
 136
 137 /** Check if @a c is a UTF-8 multibyte lead byte. */
 138 #define svn_ctype_isutf8lead(c) svn_ctype_test((c), SVN_CTYPE_UTF8LEAD)
 139
 140 /** Check if @a c is a UTF-8 multibyte continuation (non-lead) byte. */
 141 #define svn_ctype_isutf8cont(c) svn_ctype_test((c), SVN_CTYLE_UTF8CONT)
 142
 143 /** Check if @a c is part of a UTF-8 multibyte character. */
 144 #define svn_ctype_isutf8mbc(c)  svn_ctype_test((c), SVN_CTYPE_UTF8MBC)
 145
 146 /** Check if @a c is valid in UTF-8. */
 147 #define svn_ctype_isutf8(c)     svn_ctype_test((c), SVN_CTYPE_UTF8)
 148
 149 /** @} */
 150
 151 /**
 152  * @defgroup ctype_ascii ASCII character value constants
 153  * @{
 154  */
 155
 156 #define SVN_CTYPE_ASCII_MINUS            45 /**< ASCII value of '-' */
 157 #define SVN_CTYPE_ASCII_DOT              46 /**< ASCII value of '.' */
 158 #define SVN_CTYPE_ASCII_COLON            58 /**< ASCII value of ':' */
 159 #define SVN_CTYPE_ASCII_UNDERSCORE       95 /**< ASCII value of '_' */
 160 #define SVN_CTYPE_ASCII_TAB               9 /**< ASCII value of a tab */
 161 #define SVN_CTYPE_ASCII_LINEFEED         10 /**< ASCII value of a line feed */
 162 #define SVN_CTYPE_ASCII_CARRIAGERETURN   13
 163   /**< ASCII value of a carriage return */
 164 #define SVN_CTYPE_ASCII_DELETE          127
 165   /**< ASCII value of a delete character */
 166
 167
 168 /** @} */
 169
 170 /**
 171  * @defgroup ctype_case ASCII-subset case folding
 172  * @{
 173  */
 174
 175 /**
 176  * Compare two characters @a a and @a b, treating case-equivalent
 177  * unaccented Latin (ASCII subset) letters as equal.
 178  *
 179  * Returns in integer greater than, equal to, or less than 0,
 180  * according to whether @a a is considered greater than, equal to,
 181  * or less than @a b.
 182  *
 183  * @since New in 1.5.
 184  */
 185 int
 186 svn_ctype_casecmp(int a,
 187                   int b);
 188
 189
 190 /** @} */
 191
 192 #ifdef __cplusplus
 193 }
 194 #endif /* __cplusplus */
 195
 196 #endif /* SVN_CTYPE_H */