6 /* Copyright (C) 1995,1996,2000,2001,2004, 2006, 2008, 2009 Free Software Foundation, Inc.
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public License
10 * as published by the Free Software Foundation; either version 3 of
11 * the License, or (at your option) any later version.
13 * This library is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with this library; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
26 #include "libguile/__scm.h"
28 #ifndef SCM_T_WCHAR_DEFINED
29 typedef scm_t_int32 scm_t_wchar
;
30 #define SCM_T_WCHAR_DEFINED
31 #endif /* SCM_T_WCHAR_DEFINED */
34 /* Immediate Characters
36 #define SCM_CHARP(x) (SCM_ITAG8(x) == scm_tc8_char)
37 #define SCM_CHAR(x) ((scm_t_wchar)SCM_ITAG8_DATA(x))
39 /* SCM_MAKE_CHAR maps signed chars (-128 to 127) and unsigned chars (0
40 to 255) to Latin-1 codepoints (0 to 255) while allowing higher
41 codepoints (256 to 1114111) to pass through unchanged.
43 This macro evaluates x twice, which may lead to side effects if not
45 #define SCM_MAKE_CHAR(x) \
47 ? SCM_MAKE_ITAG8 ((scm_t_bits) (unsigned char) (x), scm_tc8_char) \
48 : SCM_MAKE_ITAG8 ((scm_t_bits) (x), scm_tc8_char))
50 #define SCM_CODEPOINT_DOTTED_CIRCLE (0x25cc)
51 #define SCM_CODEPOINT_SURROGATE_START (0xd800)
52 #define SCM_CODEPOINT_SURROGATE_END (0xdfff)
53 #define SCM_CODEPOINT_MAX (0x10ffff)
54 #define SCM_IS_UNICODE_CHAR(c) \
55 (((scm_t_wchar) (c) >= 0 \
56 && (scm_t_wchar) (c) < SCM_CODEPOINT_SURROGATE_START) \
57 || ((scm_t_wchar) (c) > SCM_CODEPOINT_SURROGATE_END \
58 && (scm_t_wchar) (c) <= SCM_CODEPOINT_MAX))
62 SCM_API SCM
scm_char_p (SCM x
);
63 SCM_API SCM
scm_char_eq_p (SCM x
, SCM y
);
64 SCM_API SCM
scm_char_less_p (SCM x
, SCM y
);
65 SCM_API SCM
scm_char_leq_p (SCM x
, SCM y
);
66 SCM_API SCM
scm_char_gr_p (SCM x
, SCM y
);
67 SCM_API SCM
scm_char_geq_p (SCM x
, SCM y
);
68 SCM_API SCM
scm_char_ci_eq_p (SCM x
, SCM y
);
69 SCM_API SCM
scm_char_ci_less_p (SCM x
, SCM y
);
70 SCM_API SCM
scm_char_ci_leq_p (SCM x
, SCM y
);
71 SCM_API SCM
scm_char_ci_gr_p (SCM x
, SCM y
);
72 SCM_API SCM
scm_char_ci_geq_p (SCM x
, SCM y
);
73 SCM_API SCM
scm_char_alphabetic_p (SCM chr
);
74 SCM_API SCM
scm_char_numeric_p (SCM chr
);
75 SCM_API SCM
scm_char_whitespace_p (SCM chr
);
76 SCM_API SCM
scm_char_upper_case_p (SCM chr
);
77 SCM_API SCM
scm_char_lower_case_p (SCM chr
);
78 SCM_API SCM
scm_char_is_both_p (SCM chr
);
79 SCM_API SCM
scm_char_to_integer (SCM chr
);
80 SCM_API SCM
scm_integer_to_char (SCM n
);
81 SCM_API SCM
scm_char_upcase (SCM chr
);
82 SCM_API SCM
scm_char_downcase (SCM chr
);
83 SCM_API scm_t_wchar
scm_c_upcase (scm_t_wchar c
);
84 SCM_API scm_t_wchar
scm_c_downcase (scm_t_wchar c
);
85 SCM_INTERNAL
const char *scm_i_charname (SCM chr
);
86 SCM_INTERNAL SCM
scm_i_charname_to_char (const char *charname
,
88 SCM_INTERNAL
void scm_init_chars (void);
90 #endif /* SCM_CHARS_H */