glib/pcre/pcre_ucp_searchfuncs.c

   1 /*************************************************
   2 *      Perl-Compatible Regular Expressions       *
   3 *************************************************/
   4
   5 /* PCRE is a library of functions to support regular expressions whose syntax
   6 and semantics are as close as possible to those of the Perl 5 language.
   7
   8                        Written by Philip Hazel
   9            Copyright (c) 1997-2006 University of Cambridge
  10
  11 -----------------------------------------------------------------------------
  12 Redistribution and use in source and binary forms, with or without
  13 modification, are permitted provided that the following conditions are met:
  14
  15     * Redistributions of source code must retain the above copyright notice,
  16       this list of conditions and the following disclaimer.
  17
  18     * Redistributions in binary form must reproduce the above copyright
  19       notice, this list of conditions and the following disclaimer in the
  20       documentation and/or other materials provided with the distribution.
  21
  22     * Neither the name of the University of Cambridge nor the names of its
  23       contributors may be used to endorse or promote products derived from
  24       this software without specific prior written permission.
  25
  26 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  27 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  28 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  29 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  30 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  31 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  32 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  33 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  34 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  35 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  36 POSSIBILITY OF SUCH DAMAGE.
  37 -----------------------------------------------------------------------------
  38 */
  39
  40 /* This file has been modified to use glib instead of the internal table
  41  * in ucptable.c -- Marco Barisione */
  42
  43 /* This module contains code for searching the table of Unicode character
  44 properties. */
  45
  46 #ifdef HAVE_CONFIG_H
  47 #include "config.h"
  48 #endif
  49
  50 #include "pcre_internal.h"
  51
  52 #include "ucp.h"               /* Category definitions */
  53
  54 /* Table to translate from particular type value to the general value. */
  55
  56 #ifdef NOT_USED_IN_GLIB
  57
  58 static int ucp_gentype[] = {
  59   ucp_C, ucp_C, ucp_C, ucp_C, ucp_C,  /* Cc, Cf, Cn, Co, Cs */
  60   ucp_L, ucp_L, ucp_L, ucp_L, ucp_L,  /* Ll, Lu, Lm, Lo, Lt */
  61   ucp_M, ucp_M, ucp_M,                /* Mc, Me, Mn */
  62   ucp_N, ucp_N, ucp_N,                /* Nd, Nl, No */
  63   ucp_P, ucp_P, ucp_P, ucp_P, ucp_P,  /* Pc, Pd, Pe, Pf, Pi */
  64   ucp_P, ucp_P,                       /* Ps, Po */
  65   ucp_S, ucp_S, ucp_S, ucp_S,         /* Sc, Sk, Sm, So */
  66   ucp_Z, ucp_Z, ucp_Z                 /* Zl, Zp, Zs */
  67 };
  68
  69
  70
  71 /*************************************************
  72 *         Search table and return type           *
  73 *************************************************/
  74
  75 /* Three values are returned: the category is ucp_C, ucp_L, etc. The detailed
  76 character type is ucp_Lu, ucp_Nd, etc. The script is ucp_Latin, etc.
  77
  78 Arguments:
  79   c           the character value
  80   type_ptr    the detailed character type is returned here
  81   script_ptr  the script is returned here
  82
  83 Returns:      the character type category
  84 */
  85
  86 int
  87 _pcre_ucp_findprop(const unsigned int c, int *type_ptr, int *script_ptr)
  88 {
  89 /* Note that the Unicode types have the same values in glib and in
  90  * PCRE, so ucp_Ll == G_UNICODE_LOWERCASE_LETTER,
  91  * ucp_Zs == G_UNICODE_SPACE_SEPARATOR, and so on. */
  92 *type_ptr = g_unichar_type(c);
  93 *script_ptr = g_unichar_get_script(c);
  94 return ucp_gentype[*type_ptr];
  95 }
  96
  97 #endif
  98
  99
 100
 101 /*************************************************
 102 *       Search table and return other case       *
 103 *************************************************/
 104
 105 /* If the given character is a letter, and there is another case for the
 106 letter, return the other case. Otherwise, return -1.
 107
 108 Arguments:
 109   c           the character value
 110
 111 Returns:      the other case or NOTACHAR if none
 112 */
 113
 114 unsigned int
 115 _pcre_ucp_othercase(const unsigned int c)
 116 {
 117 int other_case = NOTACHAR;
 118
 119 if (g_unichar_islower(c))
 120   other_case = g_unichar_toupper(c);
 121 else if (g_unichar_isupper(c))
 122   other_case = g_unichar_tolower(c);
 123
 124 if (other_case == c)
 125   other_case = NOTACHAR;
 126
 127 return other_case;
 128 }
 129
 130
 131 /* End of pcre_ucp_searchfuncs.c */