| /* <ctype.h> replacement macros. |
| |
| Copyright (C) 2000-2024 Free Software Foundation, Inc. |
| Contributed by Zack Weinberg <zackw@stanford.edu>. |
| |
| This file is part of the libiberty library. |
| Libiberty is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Library General Public |
| License as published by the Free Software Foundation; either |
| version 2 of the License, or (at your option) any later version. |
| |
| Libiberty is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Library General Public License for more details. |
| |
| You should have received a copy of the GNU Library General Public |
| License along with libiberty; see the file COPYING.LIB. If |
| not, write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor, |
| Boston, MA 02110-1301, USA. */ |
| |
| /* |
| |
| @defvr Extension HOST_CHARSET |
| This macro indicates the basic character set and encoding used by the |
| host: more precisely, the encoding used for character constants in |
| preprocessor @samp{#if} statements (the C "execution character set"). |
| It is defined by @file{safe-ctype.h}, and will be an integer constant |
| with one of the following values: |
| |
| @ftable @code |
| @item HOST_CHARSET_UNKNOWN |
| The host character set is unknown - that is, not one of the next two |
| possibilities. |
| |
| @item HOST_CHARSET_ASCII |
| The host character set is ASCII. |
| |
| @item HOST_CHARSET_EBCDIC |
| The host character set is some variant of EBCDIC. (Only one of the |
| nineteen EBCDIC varying characters is tested; exercise caution.) |
| @end ftable |
| @end defvr |
| |
| @deffn Extension ISALPHA (@var{c}) |
| @deffnx Extension ISALNUM (@var{c}) |
| @deffnx Extension ISBLANK (@var{c}) |
| @deffnx Extension ISCNTRL (@var{c}) |
| @deffnx Extension ISDIGIT (@var{c}) |
| @deffnx Extension ISGRAPH (@var{c}) |
| @deffnx Extension ISLOWER (@var{c}) |
| @deffnx Extension ISPRINT (@var{c}) |
| @deffnx Extension ISPUNCT (@var{c}) |
| @deffnx Extension ISSPACE (@var{c}) |
| @deffnx Extension ISUPPER (@var{c}) |
| @deffnx Extension ISXDIGIT (@var{c}) |
| |
| These twelve macros are defined by @file{safe-ctype.h}. Each has the |
| same meaning as the corresponding macro (with name in lowercase) |
| defined by the standard header @file{ctype.h}. For example, |
| @code{ISALPHA} returns true for alphabetic characters and false for |
| others. However, there are two differences between these macros and |
| those provided by @file{ctype.h}: |
| |
| @itemize @bullet |
| @item These macros are guaranteed to have well-defined behavior for all |
| values representable by @code{signed char} and @code{unsigned char}, and |
| for @code{EOF}. |
| |
| @item These macros ignore the current locale; they are true for these |
| fixed sets of characters: |
| @multitable {@code{XDIGIT}} {yada yada yada yada yada yada yada yada} |
| @item @code{ALPHA} @tab @kbd{A-Za-z} |
| @item @code{ALNUM} @tab @kbd{A-Za-z0-9} |
| @item @code{BLANK} @tab @kbd{space tab} |
| @item @code{CNTRL} @tab @code{!PRINT} |
| @item @code{DIGIT} @tab @kbd{0-9} |
| @item @code{GRAPH} @tab @code{ALNUM || PUNCT} |
| @item @code{LOWER} @tab @kbd{a-z} |
| @item @code{PRINT} @tab @code{GRAPH ||} @kbd{space} |
| @item @code{PUNCT} @tab @kbd{`~!@@#$%^&*()_-=+[@{]@}\|;:'",<.>/?} |
| @item @code{SPACE} @tab @kbd{space tab \n \r \f \v} |
| @item @code{UPPER} @tab @kbd{A-Z} |
| @item @code{XDIGIT} @tab @kbd{0-9A-Fa-f} |
| @end multitable |
| |
| Note that, if the host character set is ASCII or a superset thereof, |
| all these macros will return false for all values of @code{char} outside |
| the range of 7-bit ASCII. In particular, both ISPRINT and ISCNTRL return |
| false for characters with numeric values from 128 to 255. |
| @end itemize |
| @end deffn |
| |
| @deffn Extension ISIDNUM (@var{c}) |
| @deffnx Extension ISIDST (@var{c}) |
| @deffnx Extension IS_VSPACE (@var{c}) |
| @deffnx Extension IS_NVSPACE (@var{c}) |
| @deffnx Extension IS_SPACE_OR_NUL (@var{c}) |
| @deffnx Extension IS_ISOBASIC (@var{c}) |
| These six macros are defined by @file{safe-ctype.h} and provide |
| additional character classes which are useful when doing lexical |
| analysis of C or similar languages. They are true for the following |
| sets of characters: |
| |
| @multitable {@code{SPACE_OR_NUL}} {yada yada yada yada yada yada yada yada} |
| @item @code{IDNUM} @tab @kbd{A-Za-z0-9_} |
| @item @code{IDST} @tab @kbd{A-Za-z_} |
| @item @code{VSPACE} @tab @kbd{\r \n} |
| @item @code{NVSPACE} @tab @kbd{space tab \f \v \0} |
| @item @code{SPACE_OR_NUL} @tab @code{VSPACE || NVSPACE} |
| @item @code{ISOBASIC} @tab @code{VSPACE || NVSPACE || PRINT} |
| @end multitable |
| @end deffn |
| |
| */ |
| |
| #include "ansidecl.h" |
| #include <safe-ctype.h> |
| #include <stdio.h> /* for EOF */ |
| |
| #if EOF != -1 |
| #error "<safe-ctype.h> requires EOF == -1" |
| #endif |
| |
| /* Shorthand */ |
| #define bl _sch_isblank |
| #define cn _sch_iscntrl |
| #define di _sch_isdigit |
| #define is _sch_isidst |
| #define lo _sch_islower |
| #define nv _sch_isnvsp |
| #define pn _sch_ispunct |
| #define pr _sch_isprint |
| #define sp _sch_isspace |
| #define up _sch_isupper |
| #define vs _sch_isvsp |
| #define xd _sch_isxdigit |
| |
| /* Masks. */ |
| #define L (const unsigned short) (lo|is |pr) /* lower case letter */ |
| #define XL (const unsigned short) (lo|is|xd|pr) /* lowercase hex digit */ |
| #define U (const unsigned short) (up|is |pr) /* upper case letter */ |
| #define XU (const unsigned short) (up|is|xd|pr) /* uppercase hex digit */ |
| #define D (const unsigned short) (di |xd|pr) /* decimal digit */ |
| #define P (const unsigned short) (pn |pr) /* punctuation */ |
| #define _ (const unsigned short) (pn|is |pr) /* underscore */ |
| |
| #define C (const unsigned short) ( cn) /* control character */ |
| #define Z (const unsigned short) (nv |cn) /* NUL */ |
| #define M (const unsigned short) (nv|sp |cn) /* cursor movement: \f \v */ |
| #define V (const unsigned short) (vs|sp |cn) /* vertical space: \r \n */ |
| #define T (const unsigned short) (nv|sp|bl|cn) /* tab */ |
| #define S (const unsigned short) (nv|sp|bl|pr) /* space */ |
| |
| /* Are we ASCII? */ |
| #if HOST_CHARSET == HOST_CHARSET_ASCII |
| |
| const unsigned short _sch_istable[256] = |
| { |
| Z, C, C, C, C, C, C, C, /* NUL SOH STX ETX EOT ENQ ACK BEL */ |
| C, T, V, M, M, V, C, C, /* BS HT LF VT FF CR SO SI */ |
| C, C, C, C, C, C, C, C, /* DLE DC1 DC2 DC3 DC4 NAK SYN ETB */ |
| C, C, C, C, C, C, C, C, /* CAN EM SUB ESC FS GS RS US */ |
| S, P, P, P, P, P, P, P, /* SP ! " # $ % & ' */ |
| P, P, P, P, P, P, P, P, /* ( ) * + , - . / */ |
| D, D, D, D, D, D, D, D, /* 0 1 2 3 4 5 6 7 */ |
| D, D, P, P, P, P, P, P, /* 8 9 : ; < = > ? */ |
| P, XU, XU, XU, XU, XU, XU, U, /* @ A B C D E F G */ |
| U, U, U, U, U, U, U, U, /* H I J K L M N O */ |
| U, U, U, U, U, U, U, U, /* P Q R S T U V W */ |
| U, U, U, P, P, P, P, _, /* X Y Z [ \ ] ^ _ */ |
| P, XL, XL, XL, XL, XL, XL, L, /* ` a b c d e f g */ |
| L, L, L, L, L, L, L, L, /* h i j k l m n o */ |
| L, L, L, L, L, L, L, L, /* p q r s t u v w */ |
| L, L, L, P, P, P, P, C, /* x y z { | } ~ DEL */ |
| |
| /* high half of unsigned char is locale-specific, so all tests are |
| false in "C" locale */ |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| }; |
| |
| const unsigned char _sch_tolower[256] = |
| { |
| 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, |
| 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, |
| 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, |
| 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, |
| 64, |
| |
| 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', |
| 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', |
| |
| 91, 92, 93, 94, 95, 96, |
| |
| 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', |
| 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', |
| |
| 123,124,125,126,127, |
| |
| 128,129,130,131, 132,133,134,135, 136,137,138,139, 140,141,142,143, |
| 144,145,146,147, 148,149,150,151, 152,153,154,155, 156,157,158,159, |
| 160,161,162,163, 164,165,166,167, 168,169,170,171, 172,173,174,175, |
| 176,177,178,179, 180,181,182,183, 184,185,186,187, 188,189,190,191, |
| |
| 192,193,194,195, 196,197,198,199, 200,201,202,203, 204,205,206,207, |
| 208,209,210,211, 212,213,214,215, 216,217,218,219, 220,221,222,223, |
| 224,225,226,227, 228,229,230,231, 232,233,234,235, 236,237,238,239, |
| 240,241,242,243, 244,245,246,247, 248,249,250,251, 252,253,254,255, |
| }; |
| |
| const unsigned char _sch_toupper[256] = |
| { |
| 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, |
| 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, |
| 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, |
| 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, |
| 64, |
| |
| 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', |
| 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', |
| |
| 91, 92, 93, 94, 95, 96, |
| |
| 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', |
| 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', |
| |
| 123,124,125,126,127, |
| |
| 128,129,130,131, 132,133,134,135, 136,137,138,139, 140,141,142,143, |
| 144,145,146,147, 148,149,150,151, 152,153,154,155, 156,157,158,159, |
| 160,161,162,163, 164,165,166,167, 168,169,170,171, 172,173,174,175, |
| 176,177,178,179, 180,181,182,183, 184,185,186,187, 188,189,190,191, |
| |
| 192,193,194,195, 196,197,198,199, 200,201,202,203, 204,205,206,207, |
| 208,209,210,211, 212,213,214,215, 216,217,218,219, 220,221,222,223, |
| 224,225,226,227, 228,229,230,231, 232,233,234,235, 236,237,238,239, |
| 240,241,242,243, 244,245,246,247, 248,249,250,251, 252,253,254,255, |
| }; |
| |
| #else |
| # if HOST_CHARSET == HOST_CHARSET_EBCDIC |
| #error "FIXME: write tables for EBCDIC" |
| # else |
| #error "Unrecognized host character set" |
| # endif |
| #endif |
