tholm@uvicctr.UUCP (Terrence W. Holm) (10/18/88)
EFTH MINIX report #50 - October 1988 - ctype(3) changes
I have changed iscntrl(3), isprint(3), isgraph(3),
toupper(3) and tolower(3) to be as defined in POSIX.
"man" pages are included.
Files changed: /usr/include/ctype.h and minix/lib/libc/ctype.c
Details of changes:
1) isprint(3) now includes SPACE.
2) isgraph(3) added.
3) iscntrl(3) now includes all control characters.
4) The old toupper() and tolower() are now
called _toupper() and _tolower().
5) Subroutines were added to perform the correct
toupper(3) and tolower(3).
6) Toascii(3) added.
----------------------------------------------------------
echo x - ctype.3
gres '^X' '' > ctype.3 << '/'
XSUBROUTINES
X ctype(3) - character type tests
X
XINVOCATION
X #include <ctype.h>
X
X int isalpha( c )
X int c;
X
XEXPLANATION
X There are 12 macros defined in ctype.h which test
X whether <c> is within a specified domain. <c> must
X be either EOF or an ASCII value from 0 to 127, except
X for isascii(3) which accepts any int.
X
X isalpha(c) A..Z a..z
X isupper(c) A..Z
X islower(c) a..z
X isdigit(c) 0..9
X isxdigit(c) 0..9 A..F a..f
X isalnum(c) 0..9 A..Z a..z
X isspace(c) HT LF VT FF CR SPACE
X ispunct(c) !"#$%&'()*+,-./:;<=>?@[\]^_`{|}~
X isprint(c) SPACE..~
X isgraph(c) !..~
X iscntrl(c) NUL..US DEL
X isascii(c) NUL..DEL
X
XRESULTS
X <>0 : Test is true.
X 0 : Test is false.
X
XREFERENCES
X toascii(3), tolower(3), toupper(3), ascii(4)
/
echo x - toascii.3
gres '^X' '' > toascii.3 << '/'
XSUBROUTINES
X toascii(3) - convert to ASCII
X
XINVOCATION
X #include <ctype.h>
X
X int toascii( c )
X int c;
X
XEXPLANATION
X Toascii(3) maps an int into a value from 0 to 127.
X This is necessary for some functions, such as
X isupper(3).
X
XRESULTS
X Lower seven bits of <c>.
X
XREFERENCES
X ctype(3), tolower(3), toupper(3)
/
echo x - tolower.3
gres '^X' '' > tolower.3 << '/'
XSUBROUTINES
X tolower(3) - convert to lower case
X
XINVOCATION
X #include <ctype.h>
X
X int tolower( c )
X int c;
X
X int _tolower( c )
X int c;
X
XEXPLANATION
X These routines convert upper case ASCII characters
X into lower case characters. Tolower(3) may be called
X with any ASCII value from 0 to 127, if <c> is not an
X upper case character then it is returned unchanged.
X
X _tolower(3) is a macro which can only be used if <c>
X is an upper case character.
X
XRESULTS
X Argument converted to lower case.
X
XREFERENCES
X ctype(3), toascii(3), toupper(3)
/
echo x - toupper.3
gres '^X' '' > toupper.3 << '/'
XSUBROUTINES
X toupper(3) - convert to upper case
X
XINVOCATION
X #include <ctype.h>
X
X int toupper( c )
X int c;
X
X int _toupper( c )
X int c;
X
XEXPLANATION
X These routines convert lower case ASCII characters
X into upper case characters. Toupper(3) may be called
X with any ASCII value from 0 to 127, if <c> is not a
X lower case character then it is returned unchanged.
X
X _toupper(3) is a macro which can only be used if <c>
X is a lower case character.
X
XRESULTS
X Argument converted to upper case.
X
XREFERENCES
X ctype(3), toascii(3), tolower(3)
/
echo x - ascii.4
gres '^X' '' > ascii.4 << '/'
XSTRUCTURES
X ascii(4) - the ASCII character set
X
XEXPLANATION
X The following table contains the 128 ASCII characters.
X C program '\X' escapes are noted.
X
X Oct Dec Hex Char Oct Dec Hex Char
X
X 0 0 0x00 NUL \0 0100 64 0x40 @
X 01 1 0x01 SOH 0101 65 0x41 A
X 02 2 0x02 STX 0102 66 0x42 B
X 03 3 0x03 ETX 0103 67 0x43 C
X 04 4 0x04 EOT 0104 68 0x44 D
X 05 5 0x05 ENQ 0105 69 0x45 E
X 06 6 0x06 ACK 0106 70 0x46 F
X 07 7 0x07 BEL 0107 71 0x47 G
X 010 8 0x08 BS \b 0110 72 0x48 H
X 011 9 0x09 HT \t 0111 73 0x49 I
X 012 10 0x0A LF \n 0112 74 0x4A J
X 013 11 0x0B VT 0113 75 0x4B K
X 014 12 0x0C FF \f 0114 76 0x4C L
X 015 13 0x0D CR \r 0115 77 0x4D M
X 016 14 0x0E SO 0116 78 0x4E N
X 017 15 0x0F SI 0117 79 0x4F O
X 020 16 0x10 DLE 0120 80 0x50 P
X 021 17 0x11 DC1 0121 81 0x51 Q
X 022 18 0x12 DC2 0122 82 0x52 R
X 023 19 0x13 DC3 0123 83 0x53 S
X 024 20 0x14 DC4 0124 84 0x54 T
X 025 21 0x15 NAK 0125 85 0x55 U
X 026 22 0x16 SYN 0126 86 0x56 V
X 027 23 0x17 ETB 0127 87 0x57 W
X 030 24 0x18 CAN 0130 88 0x58 X
X 031 25 0x19 EM 0131 89 0x59 Y
X 032 26 0x1A SUB 0132 90 0x5A Z
X 033 27 0x1B ESC 0133 91 0x5B [
X 034 28 0x1C FS 0134 92 0x5C \
X 035 29 0x1D GS 0135 93 0x5D ]
X 036 30 0x1E RS 0136 94 0x5E ^
X 037 31 0x1F US 0137 95 0x5F _
X 040 32 0x20 SPACE 0140 96 0x60 `
X 041 33 0x21 ! 0141 97 0x61 a
X 042 34 0x22 " 0142 98 0x62 b
X 043 35 0x23 # 0143 99 0x63 c
X 044 36 0x24 $ 0144 100 0x64 d
X 045 37 0x25 % 0145 101 0x65 e
X 046 38 0x26 & 0146 102 0x66 f
X 047 39 0x27 ' 0147 103 0x67 g
X 050 40 0x28 ( 0150 104 0x68 h
X 051 41 0x29 ) 0151 105 0x69 i
X 052 42 0x2A * 0152 106 0x6A j
X 053 43 0x2B + 0153 107 0x6B k
X 054 44 0x2C , 0154 108 0x6C l
X 055 45 0x2D - 0155 109 0x6D m
X 056 46 0x2E . 0156 110 0x6E n
X 057 47 0x2F / 0157 111 0x6F o
X 060 48 0x30 0 0160 112 0x70 p
X 061 49 0x31 1 0161 113 0x71 q
X 062 50 0x32 2 0162 114 0x72 r
X 063 51 0x33 3 0163 115 0x73 s
X 064 52 0x34 4 0164 116 0x74 t
X 065 53 0x35 5 0165 117 0x75 u
X 066 54 0x36 6 0166 118 0x76 v
X 067 55 0x37 7 0167 119 0x77 w
X 070 56 0x38 8 0170 120 0x78 x
X 071 57 0x39 9 0171 121 0x79 y
X 072 58 0x3A : 0172 122 0x7A z
X 073 59 0x3B ; 0173 123 0x7B {
X 074 60 0x3C < 0174 124 0x7C |
X 075 61 0x3D = 0175 125 0x7D }
X 076 62 0x3E > 0176 126 0x7E ~
X 077 63 0x3F ? 0177 127 0x7F DEL
/
echo x - ctype.h
gres '^X' '' > ctype.h << '/'
X/* ctype.h */
X
X/* Added isgraph(3) and toascii(3); renamed _toupper(3) */
X/* and _tolower(3) Terrence W. Holm Oct. 1988 */
X
Xextern char _ctype_[];
X
X#define _U 0001
X#define _L 0002
X#define _N 0004
X#define _S 0010
X#define _P 0020
X#define _C 0040
X#define _X 0100
X#define _SP 0200
X
X#define isalpha(c) ((_ctype_+1)[c]&(_U|_L))
X#define isupper(c) ((_ctype_+1)[c]&_U)
X#define islower(c) ((_ctype_+1)[c]&_L)
X#define isdigit(c) ((_ctype_+1)[c]&_N)
X#define isxdigit(c) ((_ctype_+1)[c]&(_N|_X))
X#define isspace(c) ((_ctype_+1)[c]&_S)
X#define ispunct(c) ((_ctype_+1)[c]&_P)
X#define isalnum(c) ((_ctype_+1)[c]&(_U|_L|_N))
X#define isprint(c) ((_ctype_+1)[c]&(_SP|_P|_U|_L|_N))
X#define isgraph(c) ((_ctype_+1)[c]&(_P|_U|_L|_N))
X#define iscntrl(c) ((_ctype_+1)[c]&_C)
X#define isascii(c) ((unsigned)(c)<=0177)
X
X#define _toupper(c) ((c) - 'a' + 'A')
X#define _tolower(c) ((c) - 'A' + 'a')
X#define toascii(c) ((c) & 0177)
/
echo x - ctype.c
gres '^X' '' > ctype.c << '/'
X/* ctype.c */
X
X/* Included ^I..^M in iscntrl(3). Added toupper(3) and */
X/* tolower(3) Terrence W. Holm Oct. 1988 */
X
X
X#include <ctype.h>
X#include <stdio.h>
X
Xchar _ctype_[] = {
X 0,
X _C, _C, _C, _C, _C, _C, _C, _C,
X _C, _S|_C, _S|_C, _S|_C, _S|_C, _S|_C, _C, _C,
X _C, _C, _C, _C, _C, _C, _C, _C,
X _C, _C, _C, _C, _C, _C, _C, _C,
X _S|_SP, _P, _P, _P, _P, _P, _P, _P,
X _P, _P, _P, _P, _P, _P, _P, _P,
X _N, _N, _N, _N, _N, _N, _N, _N,
X _N, _N, _P, _P, _P, _P, _P, _P,
X _P, _U|_X, _U|_X, _U|_X, _U|_X, _U|_X, _U|_X, _U,
X _U, _U, _U, _U, _U, _U, _U, _U,
X _U, _U, _U, _U, _U, _U, _U, _U,
X _U, _U, _U, _P, _P, _P, _P, _P,
X _P, _L|_X, _L|_X, _L|_X, _L|_X, _L|_X, _L|_X, _L,
X _L, _L, _L, _L, _L, _L, _L, _L,
X _L, _L, _L, _L, _L, _L, _L, _L,
X _L, _L, _L, _P, _P, _P, _P, _C
X};
X
X
Xtoupper( c )
X int c;
X {
X return( islower(c) ? _toupper(c) : c );
X }
X
X
Xtolower( c )
X int c;
X {
X return( isupper(c) ? _tolower(c) : c );
X }
/
----------------------------------------------------------
Terrence W. Holm
uw-beaver!uvicctr!tholm