0,0 → 1,255 |
/* <ctype.h> replacement macros. |
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Copyright (C) 2000, 2001, 2002, 2003, 2004, |
2005 Free Software Foundation, Inc. |
Contributed by Zack Weinberg <zackw@stanford.edu>. |
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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. |
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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. */ |
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/* |
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@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: |
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@ftable @code |
@item HOST_CHARSET_UNKNOWN |
The host character set is unknown - that is, not one of the next two |
possibilities. |
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@item HOST_CHARSET_ASCII |
The host character set is ASCII. |
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@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 |
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@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}) |
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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}: |
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@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}. |
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@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 |
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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 |
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@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: |
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@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 |
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*/ |
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#include "ansidecl.h" |
#include <safe-ctype.h> |
#include <stdio.h> /* for EOF */ |
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#if EOF != -1 |
#error "<safe-ctype.h> requires EOF == -1" |
#endif |
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/* 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 |
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/* 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 */ |
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#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 */ |
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/* Are we ASCII? */ |
#if HOST_CHARSET == HOST_CHARSET_ASCII |
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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 */ |
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/* 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, |
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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, |
}; |
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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, |
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'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', |
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91, 92, 93, 94, 95, 96, |
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'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', |
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123,124,125,126,127, |
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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, |
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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, |
}; |
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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, |
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'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', |
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91, 92, 93, 94, 95, 96, |
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'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', |
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123,124,125,126,127, |
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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, |
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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, |
}; |
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#else |
# if HOST_CHARSET == HOST_CHARSET_EBCDIC |
#error "FIXME: write tables for EBCDIC" |
# else |
#error "Unrecognized host character set" |
# endif |
#endif |