| /* Copyright (C) 2008 Denys Vlasenko <vda.linux@googlemail.com> |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| */ |
| |
| #ifndef _BITS_UCLIBC_CHARCLASS_H |
| #define _BITS_UCLIBC_CHARCLASS_H |
| |
| /* Taking advantage of the C99 mutual-exclusion guarantees for the various |
| * (w)ctype classes, including the descriptions of printing and control |
| * (w)chars, we can place each in one of the following mutually-exlusive |
| * subsets. Since there are less than 16, we can store the data for |
| * each (w)chars in a nibble. In contrast, glibc uses an unsigned int |
| * per (w)char, with one bit flag for each is* type. While this allows |
| * a simple '&' operation to determine the type vs. a range test and a |
| * little special handling for the "blank" and "xdigit" types in my |
| * approach, it also uses 8 times the space for the tables on the typical |
| * 32-bit archs we supported.*/ |
| enum { |
| __CTYPE_unclassified = 0, |
| __CTYPE_alpha_nonupper_nonlower, |
| __CTYPE_alpha_lower, |
| __CTYPE_alpha_upper_lower, |
| __CTYPE_alpha_upper, |
| __CTYPE_digit, |
| __CTYPE_punct, |
| __CTYPE_graph, |
| __CTYPE_print_space_nonblank, |
| __CTYPE_print_space_blank, |
| __CTYPE_space_nonblank_noncntrl, |
| __CTYPE_space_blank_noncntrl, |
| __CTYPE_cntrl_space_nonblank, |
| __CTYPE_cntrl_space_blank, |
| __CTYPE_cntrl_nonspace |
| }; |
| |
| #endif |
