1*a9fa9459Szrj /* <ctype.h> replacement macros. 2*a9fa9459Szrj 3*a9fa9459Szrj Copyright (C) 2000, 2001, 2002, 2003, 2004, 4*a9fa9459Szrj 2005 Free Software Foundation, Inc. 5*a9fa9459Szrj Contributed by Zack Weinberg <zackw@stanford.edu>. 6*a9fa9459Szrj 7*a9fa9459Szrj This file is part of the libiberty library. 8*a9fa9459Szrj Libiberty is free software; you can redistribute it and/or 9*a9fa9459Szrj modify it under the terms of the GNU Library General Public 10*a9fa9459Szrj License as published by the Free Software Foundation; either 11*a9fa9459Szrj version 2 of the License, or (at your option) any later version. 12*a9fa9459Szrj 13*a9fa9459Szrj Libiberty is distributed in the hope that it will be useful, 14*a9fa9459Szrj but WITHOUT ANY WARRANTY; without even the implied warranty of 15*a9fa9459Szrj MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16*a9fa9459Szrj Library General Public License for more details. 17*a9fa9459Szrj 18*a9fa9459Szrj You should have received a copy of the GNU Library General Public 19*a9fa9459Szrj License along with libiberty; see the file COPYING.LIB. If 20*a9fa9459Szrj not, write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor, 21*a9fa9459Szrj Boston, MA 02110-1301, USA. */ 22*a9fa9459Szrj 23*a9fa9459Szrj /* 24*a9fa9459Szrj 25*a9fa9459Szrj @defvr Extension HOST_CHARSET 26*a9fa9459Szrj This macro indicates the basic character set and encoding used by the 27*a9fa9459Szrj host: more precisely, the encoding used for character constants in 28*a9fa9459Szrj preprocessor @samp{#if} statements (the C "execution character set"). 29*a9fa9459Szrj It is defined by @file{safe-ctype.h}, and will be an integer constant 30*a9fa9459Szrj with one of the following values: 31*a9fa9459Szrj 32*a9fa9459Szrj @ftable @code 33*a9fa9459Szrj @item HOST_CHARSET_UNKNOWN 34*a9fa9459Szrj The host character set is unknown - that is, not one of the next two 35*a9fa9459Szrj possibilities. 36*a9fa9459Szrj 37*a9fa9459Szrj @item HOST_CHARSET_ASCII 38*a9fa9459Szrj The host character set is ASCII. 39*a9fa9459Szrj 40*a9fa9459Szrj @item HOST_CHARSET_EBCDIC 41*a9fa9459Szrj The host character set is some variant of EBCDIC. (Only one of the 42*a9fa9459Szrj nineteen EBCDIC varying characters is tested; exercise caution.) 43*a9fa9459Szrj @end ftable 44*a9fa9459Szrj @end defvr 45*a9fa9459Szrj 46*a9fa9459Szrj @deffn Extension ISALPHA (@var{c}) 47*a9fa9459Szrj @deffnx Extension ISALNUM (@var{c}) 48*a9fa9459Szrj @deffnx Extension ISBLANK (@var{c}) 49*a9fa9459Szrj @deffnx Extension ISCNTRL (@var{c}) 50*a9fa9459Szrj @deffnx Extension ISDIGIT (@var{c}) 51*a9fa9459Szrj @deffnx Extension ISGRAPH (@var{c}) 52*a9fa9459Szrj @deffnx Extension ISLOWER (@var{c}) 53*a9fa9459Szrj @deffnx Extension ISPRINT (@var{c}) 54*a9fa9459Szrj @deffnx Extension ISPUNCT (@var{c}) 55*a9fa9459Szrj @deffnx Extension ISSPACE (@var{c}) 56*a9fa9459Szrj @deffnx Extension ISUPPER (@var{c}) 57*a9fa9459Szrj @deffnx Extension ISXDIGIT (@var{c}) 58*a9fa9459Szrj 59*a9fa9459Szrj These twelve macros are defined by @file{safe-ctype.h}. Each has the 60*a9fa9459Szrj same meaning as the corresponding macro (with name in lowercase) 61*a9fa9459Szrj defined by the standard header @file{ctype.h}. For example, 62*a9fa9459Szrj @code{ISALPHA} returns true for alphabetic characters and false for 63*a9fa9459Szrj others. However, there are two differences between these macros and 64*a9fa9459Szrj those provided by @file{ctype.h}: 65*a9fa9459Szrj 66*a9fa9459Szrj @itemize @bullet 67*a9fa9459Szrj @item These macros are guaranteed to have well-defined behavior for all 68*a9fa9459Szrj values representable by @code{signed char} and @code{unsigned char}, and 69*a9fa9459Szrj for @code{EOF}. 70*a9fa9459Szrj 71*a9fa9459Szrj @item These macros ignore the current locale; they are true for these 72*a9fa9459Szrj fixed sets of characters: 73*a9fa9459Szrj @multitable {@code{XDIGIT}} {yada yada yada yada yada yada yada yada} 74*a9fa9459Szrj @item @code{ALPHA} @tab @kbd{A-Za-z} 75*a9fa9459Szrj @item @code{ALNUM} @tab @kbd{A-Za-z0-9} 76*a9fa9459Szrj @item @code{BLANK} @tab @kbd{space tab} 77*a9fa9459Szrj @item @code{CNTRL} @tab @code{!PRINT} 78*a9fa9459Szrj @item @code{DIGIT} @tab @kbd{0-9} 79*a9fa9459Szrj @item @code{GRAPH} @tab @code{ALNUM || PUNCT} 80*a9fa9459Szrj @item @code{LOWER} @tab @kbd{a-z} 81*a9fa9459Szrj @item @code{PRINT} @tab @code{GRAPH ||} @kbd{space} 82*a9fa9459Szrj @item @code{PUNCT} @tab @kbd{`~!@@#$%^&*()_-=+[@{]@}\|;:'",<.>/?} 83*a9fa9459Szrj @item @code{SPACE} @tab @kbd{space tab \n \r \f \v} 84*a9fa9459Szrj @item @code{UPPER} @tab @kbd{A-Z} 85*a9fa9459Szrj @item @code{XDIGIT} @tab @kbd{0-9A-Fa-f} 86*a9fa9459Szrj @end multitable 87*a9fa9459Szrj 88*a9fa9459Szrj Note that, if the host character set is ASCII or a superset thereof, 89*a9fa9459Szrj all these macros will return false for all values of @code{char} outside 90*a9fa9459Szrj the range of 7-bit ASCII. In particular, both ISPRINT and ISCNTRL return 91*a9fa9459Szrj false for characters with numeric values from 128 to 255. 92*a9fa9459Szrj @end itemize 93*a9fa9459Szrj @end deffn 94*a9fa9459Szrj 95*a9fa9459Szrj @deffn Extension ISIDNUM (@var{c}) 96*a9fa9459Szrj @deffnx Extension ISIDST (@var{c}) 97*a9fa9459Szrj @deffnx Extension IS_VSPACE (@var{c}) 98*a9fa9459Szrj @deffnx Extension IS_NVSPACE (@var{c}) 99*a9fa9459Szrj @deffnx Extension IS_SPACE_OR_NUL (@var{c}) 100*a9fa9459Szrj @deffnx Extension IS_ISOBASIC (@var{c}) 101*a9fa9459Szrj These six macros are defined by @file{safe-ctype.h} and provide 102*a9fa9459Szrj additional character classes which are useful when doing lexical 103*a9fa9459Szrj analysis of C or similar languages. They are true for the following 104*a9fa9459Szrj sets of characters: 105*a9fa9459Szrj 106*a9fa9459Szrj @multitable {@code{SPACE_OR_NUL}} {yada yada yada yada yada yada yada yada} 107*a9fa9459Szrj @item @code{IDNUM} @tab @kbd{A-Za-z0-9_} 108*a9fa9459Szrj @item @code{IDST} @tab @kbd{A-Za-z_} 109*a9fa9459Szrj @item @code{VSPACE} @tab @kbd{\r \n} 110*a9fa9459Szrj @item @code{NVSPACE} @tab @kbd{space tab \f \v \0} 111*a9fa9459Szrj @item @code{SPACE_OR_NUL} @tab @code{VSPACE || NVSPACE} 112*a9fa9459Szrj @item @code{ISOBASIC} @tab @code{VSPACE || NVSPACE || PRINT} 113*a9fa9459Szrj @end multitable 114*a9fa9459Szrj @end deffn 115*a9fa9459Szrj 116*a9fa9459Szrj */ 117*a9fa9459Szrj 118*a9fa9459Szrj #include "ansidecl.h" 119*a9fa9459Szrj #include <safe-ctype.h> 120*a9fa9459Szrj #include <stdio.h> /* for EOF */ 121*a9fa9459Szrj 122*a9fa9459Szrj #if EOF != -1 123*a9fa9459Szrj #error "<safe-ctype.h> requires EOF == -1" 124*a9fa9459Szrj #endif 125*a9fa9459Szrj 126*a9fa9459Szrj /* Shorthand */ 127*a9fa9459Szrj #define bl _sch_isblank 128*a9fa9459Szrj #define cn _sch_iscntrl 129*a9fa9459Szrj #define di _sch_isdigit 130*a9fa9459Szrj #define is _sch_isidst 131*a9fa9459Szrj #define lo _sch_islower 132*a9fa9459Szrj #define nv _sch_isnvsp 133*a9fa9459Szrj #define pn _sch_ispunct 134*a9fa9459Szrj #define pr _sch_isprint 135*a9fa9459Szrj #define sp _sch_isspace 136*a9fa9459Szrj #define up _sch_isupper 137*a9fa9459Szrj #define vs _sch_isvsp 138*a9fa9459Szrj #define xd _sch_isxdigit 139*a9fa9459Szrj 140*a9fa9459Szrj /* Masks. */ 141*a9fa9459Szrj #define L (const unsigned short) (lo|is |pr) /* lower case letter */ 142*a9fa9459Szrj #define XL (const unsigned short) (lo|is|xd|pr) /* lowercase hex digit */ 143*a9fa9459Szrj #define U (const unsigned short) (up|is |pr) /* upper case letter */ 144*a9fa9459Szrj #define XU (const unsigned short) (up|is|xd|pr) /* uppercase hex digit */ 145*a9fa9459Szrj #define D (const unsigned short) (di |xd|pr) /* decimal digit */ 146*a9fa9459Szrj #define P (const unsigned short) (pn |pr) /* punctuation */ 147*a9fa9459Szrj #define _ (const unsigned short) (pn|is |pr) /* underscore */ 148*a9fa9459Szrj 149*a9fa9459Szrj #define C (const unsigned short) ( cn) /* control character */ 150*a9fa9459Szrj #define Z (const unsigned short) (nv |cn) /* NUL */ 151*a9fa9459Szrj #define M (const unsigned short) (nv|sp |cn) /* cursor movement: \f \v */ 152*a9fa9459Szrj #define V (const unsigned short) (vs|sp |cn) /* vertical space: \r \n */ 153*a9fa9459Szrj #define T (const unsigned short) (nv|sp|bl|cn) /* tab */ 154*a9fa9459Szrj #define S (const unsigned short) (nv|sp|bl|pr) /* space */ 155*a9fa9459Szrj 156*a9fa9459Szrj /* Are we ASCII? */ 157*a9fa9459Szrj #if HOST_CHARSET == HOST_CHARSET_ASCII 158*a9fa9459Szrj 159*a9fa9459Szrj const unsigned short _sch_istable[256] = 160*a9fa9459Szrj { 161*a9fa9459Szrj Z, C, C, C, C, C, C, C, /* NUL SOH STX ETX EOT ENQ ACK BEL */ 162*a9fa9459Szrj C, T, V, M, M, V, C, C, /* BS HT LF VT FF CR SO SI */ 163*a9fa9459Szrj C, C, C, C, C, C, C, C, /* DLE DC1 DC2 DC3 DC4 NAK SYN ETB */ 164*a9fa9459Szrj C, C, C, C, C, C, C, C, /* CAN EM SUB ESC FS GS RS US */ 165*a9fa9459Szrj S, P, P, P, P, P, P, P, /* SP ! " # $ % & ' */ 166*a9fa9459Szrj P, P, P, P, P, P, P, P, /* ( ) * + , - . / */ 167*a9fa9459Szrj D, D, D, D, D, D, D, D, /* 0 1 2 3 4 5 6 7 */ 168*a9fa9459Szrj D, D, P, P, P, P, P, P, /* 8 9 : ; < = > ? */ 169*a9fa9459Szrj P, XU, XU, XU, XU, XU, XU, U, /* @ A B C D E F G */ 170*a9fa9459Szrj U, U, U, U, U, U, U, U, /* H I J K L M N O */ 171*a9fa9459Szrj U, U, U, U, U, U, U, U, /* P Q R S T U V W */ 172*a9fa9459Szrj U, U, U, P, P, P, P, _, /* X Y Z [ \ ] ^ _ */ 173*a9fa9459Szrj P, XL, XL, XL, XL, XL, XL, L, /* ` a b c d e f g */ 174*a9fa9459Szrj L, L, L, L, L, L, L, L, /* h i j k l m n o */ 175*a9fa9459Szrj L, L, L, L, L, L, L, L, /* p q r s t u v w */ 176*a9fa9459Szrj L, L, L, P, P, P, P, C, /* x y z { | } ~ DEL */ 177*a9fa9459Szrj 178*a9fa9459Szrj /* high half of unsigned char is locale-specific, so all tests are 179*a9fa9459Szrj false in "C" locale */ 180*a9fa9459Szrj 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 181*a9fa9459Szrj 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 182*a9fa9459Szrj 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 183*a9fa9459Szrj 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 184*a9fa9459Szrj 185*a9fa9459Szrj 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 186*a9fa9459Szrj 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 187*a9fa9459Szrj 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 188*a9fa9459Szrj 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 189*a9fa9459Szrj }; 190*a9fa9459Szrj 191*a9fa9459Szrj const unsigned char _sch_tolower[256] = 192*a9fa9459Szrj { 193*a9fa9459Szrj 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 194*a9fa9459Szrj 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 195*a9fa9459Szrj 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 196*a9fa9459Szrj 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 197*a9fa9459Szrj 64, 198*a9fa9459Szrj 199*a9fa9459Szrj 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 200*a9fa9459Szrj 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 201*a9fa9459Szrj 202*a9fa9459Szrj 91, 92, 93, 94, 95, 96, 203*a9fa9459Szrj 204*a9fa9459Szrj 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 205*a9fa9459Szrj 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 206*a9fa9459Szrj 207*a9fa9459Szrj 123,124,125,126,127, 208*a9fa9459Szrj 209*a9fa9459Szrj 128,129,130,131, 132,133,134,135, 136,137,138,139, 140,141,142,143, 210*a9fa9459Szrj 144,145,146,147, 148,149,150,151, 152,153,154,155, 156,157,158,159, 211*a9fa9459Szrj 160,161,162,163, 164,165,166,167, 168,169,170,171, 172,173,174,175, 212*a9fa9459Szrj 176,177,178,179, 180,181,182,183, 184,185,186,187, 188,189,190,191, 213*a9fa9459Szrj 214*a9fa9459Szrj 192,193,194,195, 196,197,198,199, 200,201,202,203, 204,205,206,207, 215*a9fa9459Szrj 208,209,210,211, 212,213,214,215, 216,217,218,219, 220,221,222,223, 216*a9fa9459Szrj 224,225,226,227, 228,229,230,231, 232,233,234,235, 236,237,238,239, 217*a9fa9459Szrj 240,241,242,243, 244,245,246,247, 248,249,250,251, 252,253,254,255, 218*a9fa9459Szrj }; 219*a9fa9459Szrj 220*a9fa9459Szrj const unsigned char _sch_toupper[256] = 221*a9fa9459Szrj { 222*a9fa9459Szrj 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 223*a9fa9459Szrj 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 224*a9fa9459Szrj 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 225*a9fa9459Szrj 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 226*a9fa9459Szrj 64, 227*a9fa9459Szrj 228*a9fa9459Szrj 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 229*a9fa9459Szrj 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 230*a9fa9459Szrj 231*a9fa9459Szrj 91, 92, 93, 94, 95, 96, 232*a9fa9459Szrj 233*a9fa9459Szrj 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 234*a9fa9459Szrj 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 235*a9fa9459Szrj 236*a9fa9459Szrj 123,124,125,126,127, 237*a9fa9459Szrj 238*a9fa9459Szrj 128,129,130,131, 132,133,134,135, 136,137,138,139, 140,141,142,143, 239*a9fa9459Szrj 144,145,146,147, 148,149,150,151, 152,153,154,155, 156,157,158,159, 240*a9fa9459Szrj 160,161,162,163, 164,165,166,167, 168,169,170,171, 172,173,174,175, 241*a9fa9459Szrj 176,177,178,179, 180,181,182,183, 184,185,186,187, 188,189,190,191, 242*a9fa9459Szrj 243*a9fa9459Szrj 192,193,194,195, 196,197,198,199, 200,201,202,203, 204,205,206,207, 244*a9fa9459Szrj 208,209,210,211, 212,213,214,215, 216,217,218,219, 220,221,222,223, 245*a9fa9459Szrj 224,225,226,227, 228,229,230,231, 232,233,234,235, 236,237,238,239, 246*a9fa9459Szrj 240,241,242,243, 244,245,246,247, 248,249,250,251, 252,253,254,255, 247*a9fa9459Szrj }; 248*a9fa9459Szrj 249*a9fa9459Szrj #else 250*a9fa9459Szrj # if HOST_CHARSET == HOST_CHARSET_EBCDIC 251*a9fa9459Szrj #error "FIXME: write tables for EBCDIC" 252*a9fa9459Szrj # else 253*a9fa9459Szrj #error "Unrecognized host character set" 254*a9fa9459Szrj # endif 255*a9fa9459Szrj #endif 256