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/* 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 |