libguile/unicode.c

   1 /* Copyright (C) 2014 Free Software Foundation, Inc.
   2  *
   3  * This library is free software: you can redistribute it and/or modify
   4  * it under the terms of the GNU Lesser General Public License as
   5  * published by the Free Software Foundation, either version 3 of the
   6  * License, or (at your option) any later version.
   7  *
   8  * This library is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU Lesser General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU Lesser General Public
  14  * License along with this library.  If not, see
  15  * <http://www.gnu.org/licenses/>.
  16  */
  17
  18 \f
  19 #ifdef HAVE_CONFIG_H
  20 # include <config.h>
  21 #endif
  22
  23 #include <ctype.h>
  24 #include <limits.h>
  25 #include <unicase.h>
  26 #include <unictype.h>
  27 #include <uniname.h>
  28
  29 #include "libguile/_scm.h"
  30 #include "libguile/validate.h"
  31
  32 #include "libguile/unicode.h"
  33
  34 \f
  35
  36 SCM_DEFINE (scm_char_to_formal_name, "char->formal-name", 1, 0, 0,
  37             (SCM ch),
  38             "Return the formal all-upper-case unicode name of @var{ch},\n"
  39             "as a string.  If the character has no name, return @code{#f}.")
  40 #define FUNC_NAME s_scm_char_to_formal_name
  41 {
  42   char buf[UNINAME_MAX + 1];
  43
  44   SCM_VALIDATE_CHAR (1, ch);
  45
  46   memset(buf, 0, UNINAME_MAX + 1);
  47
  48   if (unicode_character_name (SCM_CHAR (ch), buf))
  49     return scm_from_latin1_string (buf);
  50
  51   return SCM_BOOL_F;
  52 }
  53 #undef FUNC_NAME
  54
  55 SCM_DEFINE (scm_formal_name_to_char, "formal-name->char", 1, 0, 0,
  56             (SCM name),
  57             "Return the character whose formal all-upper-case unicode name is\n"
  58             "@var{name}, or @code{#f} if no such character is known.")
  59 #define FUNC_NAME s_scm_formal_name_to_char
  60 {
  61   char *c_name;
  62   scm_t_wchar ret;
  63
  64   SCM_VALIDATE_STRING (1, name);
  65
  66   c_name = scm_to_latin1_string (name);
  67   ret = unicode_name_character (c_name);
  68   free (c_name);
  69
  70   return ret == UNINAME_INVALID ? SCM_BOOL_F : SCM_MAKE_CHAR (ret);
  71 }
  72 #undef FUNC_NAME
  73
  74 static void
  75 scm_load_unicode (void)
  76 {
  77 #ifndef SCM_MAGIC_SNARFER
  78 #include "libguile/unicode.x"
  79 #endif
  80 }
  81
  82 void
  83 scm_init_unicode (void)
  84 {
  85   scm_c_register_extension ("libguile-" SCM_EFFECTIVE_VERSION,
  86                             "scm_init_unicode",
  87                             (scm_t_extension_init_func)scm_load_unicode,
  88                             NULL);
  89 }
  90
  91 /*
  92   Local Variables:
  93   c-file-style: "gnu"
  94   End:
  95 */