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lxdream.org :: lxdream/src/xlat/disasm/safe-ctype.h
lxdream 0.9.1
released Jun 29
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filename src/xlat/disasm/safe-ctype.h
changeset 1265:7c6c5d26fd2e
author nkeynes
date Tue Mar 06 12:42:33 2012 +1000 (8 years ago)
permissions -rw-r--r--
last change Merge ARM disassembler from binutils 2.22
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     1 /* <ctype.h> replacement macros.
     3    Copyright (C) 2000, 2001 Free Software Foundation, Inc.
     4    Contributed by Zack Weinberg <zackw@stanford.edu>.
     6 This file is part of the libiberty library.
     7 Libiberty is free software; you can redistribute it and/or
     8 modify it under the terms of the GNU Library General Public
     9 License as published by the Free Software Foundation; either
    10 version 2 of the License, or (at your option) any later version.
    12 Libiberty is distributed in the hope that it will be useful,
    13 but WITHOUT ANY WARRANTY; without even the implied warranty of
    14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    15 Library General Public License for more details.
    17 You should have received a copy of the GNU Library General Public
    18 License along with libiberty; see the file COPYING.LIB.  If
    19 not, write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
    20 Boston, MA 02110-1301, USA.  */
    22 /* This is a compatible replacement of the standard C library's <ctype.h>
    23    with the following properties:
    25    - Implements all isxxx() macros required by C99.
    26    - Also implements some character classes useful when
    27      parsing C-like languages.
    28    - Does not change behavior depending on the current locale.
    29    - Behaves properly for all values in the range of a signed or
    30      unsigned char.
    32    To avoid conflicts, this header defines the isxxx functions in upper
    33    case, e.g. ISALPHA not isalpha.  */
    35 #ifndef SAFE_CTYPE_H
    36 #define SAFE_CTYPE_H
    38 /* Determine host character set.  */
    39 #define HOST_CHARSET_UNKNOWN 0
    40 #define HOST_CHARSET_ASCII   1
    41 #define HOST_CHARSET_EBCDIC  2
    43 #if  '\n' == 0x0A && ' ' == 0x20 && '0' == 0x30 \
    44    && 'A' == 0x41 && 'a' == 0x61 && '!' == 0x21
    45 #  define HOST_CHARSET HOST_CHARSET_ASCII
    46 #else
    47 # if '\n' == 0x15 && ' ' == 0x40 && '0' == 0xF0 \
    48    && 'A' == 0xC1 && 'a' == 0x81 && '!' == 0x5A
    49 #  define HOST_CHARSET HOST_CHARSET_EBCDIC
    50 # else
    51 #  define HOST_CHARSET HOST_CHARSET_UNKNOWN
    52 # endif
    53 #endif
    55 /* Categories.  */
    57 enum {
    58   /* In C99 */
    59   _sch_isblank  = 0x0001,	/* space \t */
    60   _sch_iscntrl  = 0x0002,	/* nonprinting characters */
    61   _sch_isdigit  = 0x0004,	/* 0-9 */
    62   _sch_islower  = 0x0008,	/* a-z */
    63   _sch_isprint  = 0x0010,	/* any printing character including ' ' */
    64   _sch_ispunct  = 0x0020,	/* all punctuation */
    65   _sch_isspace  = 0x0040,	/* space \t \n \r \f \v */
    66   _sch_isupper  = 0x0080,	/* A-Z */
    67   _sch_isxdigit = 0x0100,	/* 0-9A-Fa-f */
    69   /* Extra categories useful to cpplib.  */
    70   _sch_isidst	= 0x0200,	/* A-Za-z_ */
    71   _sch_isvsp    = 0x0400,	/* \n \r */
    72   _sch_isnvsp   = 0x0800,	/* space \t \f \v \0 */
    74   /* Combinations of the above.  */
    75   _sch_isalpha  = _sch_isupper|_sch_islower,	/* A-Za-z */
    76   _sch_isalnum  = _sch_isalpha|_sch_isdigit,	/* A-Za-z0-9 */
    77   _sch_isidnum  = _sch_isidst|_sch_isdigit,	/* A-Za-z0-9_ */
    78   _sch_isgraph  = _sch_isalnum|_sch_ispunct,	/* isprint and not space */
    79   _sch_iscppsp  = _sch_isvsp|_sch_isnvsp,	/* isspace + \0 */
    80   _sch_isbasic  = _sch_isprint|_sch_iscppsp     /* basic charset of ISO C
    81 						   (plus ` and @)  */
    82 };
    84 /* Character classification.  */
    85 extern const unsigned short _sch_istable[256];
    87 #define _sch_test(c, bit) (_sch_istable[(c) & 0xff] & (unsigned short)(bit))
    89 #define ISALPHA(c)  _sch_test(c, _sch_isalpha)
    90 #define ISALNUM(c)  _sch_test(c, _sch_isalnum)
    91 #define ISBLANK(c)  _sch_test(c, _sch_isblank)
    92 #define ISCNTRL(c)  _sch_test(c, _sch_iscntrl)
    93 #define ISDIGIT(c)  _sch_test(c, _sch_isdigit)
    94 #define ISGRAPH(c)  _sch_test(c, _sch_isgraph)
    95 #define ISLOWER(c)  _sch_test(c, _sch_islower)
    96 #define ISPRINT(c)  _sch_test(c, _sch_isprint)
    97 #define ISPUNCT(c)  _sch_test(c, _sch_ispunct)
    98 #define ISSPACE(c)  _sch_test(c, _sch_isspace)
    99 #define ISUPPER(c)  _sch_test(c, _sch_isupper)
   100 #define ISXDIGIT(c) _sch_test(c, _sch_isxdigit)
   102 #define ISIDNUM(c)	_sch_test(c, _sch_isidnum)
   103 #define ISIDST(c)	_sch_test(c, _sch_isidst)
   104 #define IS_ISOBASIC(c)	_sch_test(c, _sch_isbasic)
   105 #define IS_VSPACE(c)	_sch_test(c, _sch_isvsp)
   106 #define IS_NVSPACE(c)	_sch_test(c, _sch_isnvsp)
   107 #define IS_SPACE_OR_NUL(c)	_sch_test(c, _sch_iscppsp)
   109 /* Character transformation.  */
   110 extern const unsigned char  _sch_toupper[256];
   111 extern const unsigned char  _sch_tolower[256];
   112 #define TOUPPER(c) _sch_toupper[(c) & 0xff]
   113 #define TOLOWER(c) _sch_tolower[(c) & 0xff]
   115 /* Prevent the users of safe-ctype.h from accidently using the routines
   116    from ctype.h.  Initially, the approach was to produce an error when
   117    detecting that ctype.h has been included.  But this was causing
   118    trouble as ctype.h might get indirectly included as a result of
   119    including another system header (for instance gnulib's stdint.h).
   120    So we include ctype.h here and then immediately redefine its macros.  */
   122 #include <ctype.h>
   123 #undef isalpha
   124 #define isalpha(c) do_not_use_isalpha_with_safe_ctype
   125 #undef isalnum
   126 #define isalnum(c) do_not_use_isalnum_with_safe_ctype
   127 #undef iscntrl
   128 #define iscntrl(c) do_not_use_iscntrl_with_safe_ctype
   129 #undef isdigit
   130 #define isdigit(c) do_not_use_isdigit_with_safe_ctype
   131 #undef isgraph
   132 #define isgraph(c) do_not_use_isgraph_with_safe_ctype
   133 #undef islower
   134 #define islower(c) do_not_use_islower_with_safe_ctype
   135 #undef isprint
   136 #define isprint(c) do_not_use_isprint_with_safe_ctype
   137 #undef ispunct
   138 #define ispunct(c) do_not_use_ispunct_with_safe_ctype
   139 #undef isspace
   140 #define isspace(c) do_not_use_isspace_with_safe_ctype
   141 #undef isupper
   142 #define isupper(c) do_not_use_isupper_with_safe_ctype
   143 #undef isxdigit
   144 #define isxdigit(c) do_not_use_isxdigit_with_safe_ctype
   145 #undef toupper
   146 #define toupper(c) do_not_use_toupper_with_safe_ctype
   147 #undef tolower
   148 #define tolower(c) do_not_use_tolower_with_safe_ctype
   150 #endif /* SAFE_CTYPE_H */
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