pcre_ucp_searchfuncs.c

this is a glib for c language

/*************************************************
*      Perl-Compatible Regular Expressions       *
*************************************************/

/* PCRE is a library of functions to support regular expressions whose syntax
and semantics are as close as possible to those of the Perl 5 language.

                       Written by Philip Hazel
           Copyright (c) 1997-2006 University of Cambridge

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*/

/* This file has been modified to use glib instead of the internal table
 * in ucptable.c -- Marco Barisione */

/* This module contains code for searching the table of Unicode character
properties. */

#include "pcre_internal.h"

#include "ucp.h"               /* Category definitions */
#include "ucpinternal.h"       /* Internal table details */


/* Table to translate from particular type value to the general value. */

static int ucp_gentype[] = {
  ucp_C, ucp_C, ucp_C, ucp_C, ucp_C,  /* Cc, Cf, Cn, Co, Cs */
  ucp_L, ucp_L, ucp_L, ucp_L, ucp_L,  /* Ll, Lu, Lm, Lo, Lt */
  ucp_M, ucp_M, ucp_M,                /* Mc, Me, Mn */
  ucp_N, ucp_N, ucp_N,                /* Nd, Nl, No */
  ucp_P, ucp_P, ucp_P, ucp_P, ucp_P,  /* Pc, Pd, Pe, Pf, Pi */
  ucp_P, ucp_P,                       /* Ps, Po */
  ucp_S, ucp_S, ucp_S, ucp_S,         /* Sc, Sk, Sm, So */
  ucp_Z, ucp_Z, ucp_Z                 /* Zl, Zp, Zs */
};



/*************************************************
*         Search table and return type           *
*************************************************/

/* Three values are returned: the category is ucp_C, ucp_L, etc. The detailed
character type is ucp_Lu, ucp_Nd, etc. The script is ucp_Latin, etc.

Arguments:
  c           the character value
  type_ptr    the detailed character type is returned here
  script_ptr  the script is returned here

Returns:      the character type category
*/

int
_pcre_ucp_findprop(const unsigned int c, int *type_ptr, int *script_ptr)
{
/* Note that the Unicode types have the same values in glib and in
 * PCRE, so ucp_Ll == G_UNICODE_LOWERCASE_LETTER,
 * ucp_Zs == G_UNICODE_SPACE_SEPARATOR, and so on. */
*type_ptr = g_unichar_type(c);
*script_ptr = g_unichar_get_script(c);
return ucp_gentype[*type_ptr];
}




/*************************************************
*       Search table and return other case       *
*************************************************/

/* If the given character is a letter, and there is another case for the
letter, return the other case. Otherwise, return -1.

Arguments:
  c           the character value

Returns:      the other case or NOTACHAR if none
*/

unsigned int
_pcre_ucp_othercase(const unsigned int c)
{
int other_case = NOTACHAR;

if (g_unichar_islower(c))
  other_case = g_unichar_toupper(c);
else if (g_unichar_isupper(c))
  other_case = g_unichar_tolower(c);

if (other_case == c)
  other_case = NOTACHAR;

return other_case;
}


/* End of pcre_ucp_searchfuncs.c */