| 1 | /* classes: h_files */ |
| 2 | |
| 3 | #ifndef SCM_CHARS_H |
| 4 | #define SCM_CHARS_H |
| 5 | |
| 6 | /* Copyright (C) 1995,1996,2000,2001,2004, 2006, 2008, 2009 Free Software Foundation, Inc. |
| 7 | * |
| 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. |
| 12 | * |
| 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. |
| 17 | * |
| 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 |
| 21 | * 02110-1301 USA |
| 22 | */ |
| 23 | |
| 24 | \f |
| 25 | |
| 26 | #include "libguile/__scm.h" |
| 27 | |
| 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 */ |
| 32 | |
| 33 | \f |
| 34 | /* Immediate Characters |
| 35 | */ |
| 36 | #define SCM_CHARP(x) (SCM_ITAG8(x) == scm_tc8_char) |
| 37 | #define SCM_CHAR(x) ((scm_t_wchar)SCM_ITAG8_DATA(x)) |
| 38 | |
| 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. |
| 42 | |
| 43 | This macro evaluates x twice, which may lead to side effects if not |
| 44 | used properly. */ |
| 45 | #define SCM_MAKE_CHAR(x) \ |
| 46 | ((x) <= 1 \ |
| 47 | ? SCM_MAKE_ITAG8 ((scm_t_bits) (unsigned char) (x), scm_tc8_char) \ |
| 48 | : SCM_MAKE_ITAG8 ((scm_t_bits) (x), scm_tc8_char)) |
| 49 | |
| 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)) |
| 59 | |
| 60 | \f |
| 61 | |
| 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 scm_char_titlecase (SCM chr); |
| 84 | SCM_API SCM scm_char_general_category (SCM chr); |
| 85 | SCM_API scm_t_wchar scm_c_upcase (scm_t_wchar c); |
| 86 | SCM_API scm_t_wchar scm_c_downcase (scm_t_wchar c); |
| 87 | SCM_API scm_t_wchar scm_c_titlecase (scm_t_wchar c); |
| 88 | SCM_INTERNAL const char *scm_i_charname (SCM chr); |
| 89 | SCM_INTERNAL SCM scm_i_charname_to_char (const char *charname, |
| 90 | size_t charname_len); |
| 91 | SCM_INTERNAL void scm_init_chars (void); |
| 92 | |
| 93 | #endif /* SCM_CHARS_H */ |
| 94 | |
| 95 | /* |
| 96 | Local Variables: |
| 97 | c-file-style: "gnu" |
| 98 | End: |
| 99 | */ |