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37 
38 #ifndef _MORKCH_
39 #  define _MORKCH_ 1
40 
41 #  ifndef _MORK_
42 #    include "mork.h"
43 #  endif
44 
45 /* this byte char predicate header file derives from public domain Mithril */
46 /* (that means much of this has a copyright dedicated to the public domain) */
47 
48 /* Use all 8 pred bits; lose some pred bits only if we need to reuse them. */
49 
50 /* ch pred bits: W:white D:digit V:value U:upper L:lower N:name  M:more */
51 #  define morkCh_kW (1 << 0)
52 #  define morkCh_kD (1 << 1)
53 #  define morkCh_kV (1 << 2)
54 #  define morkCh_kU (1 << 3)
55 #  define morkCh_kL (1 << 4)
56 #  define morkCh_kX (1 << 5)
57 #  define morkCh_kN (1 << 6)
58 #  define morkCh_kM (1 << 7)
59 
60 extern const mork_flags morkCh_Type[]; /* 256 byte predicate bits ch map */
61 
62 /* is a numeric decimal digit: (note memory access might be slower) */
63 /* define morkCh_IsDigit(c)  ( morkCh_Type[ (mork_ch)(c) ] & morkCh_kD ) */
64 #  define morkCh_IsDigit(c) (((mork_ch)c) >= '0' && ((mork_ch)c) <= '9')
65 
66 /* is a numeric octal digit: */
67 #  define morkCh_IsOctal(c) (((mork_ch)c) >= '0' && ((mork_ch)c) <= '7')
68 
69 /* is a numeric hexadecimal digit: */
70 #  define morkCh_IsHex(c) (morkCh_Type[(mork_ch)(c)] & morkCh_kX)
71 
72 /* is value (can be printed in Mork value without needing hex or escape): */
73 #  define morkCh_IsValue(c) (morkCh_Type[(mork_ch)(c)] & morkCh_kV)
74 
75 /* is white space : */
76 #  define morkCh_IsWhite(c) (morkCh_Type[(mork_ch)(c)] & morkCh_kW)
77 
78 /* is name (can start a Mork name): */
79 #  define morkCh_IsName(c) (morkCh_Type[(mork_ch)(c)] & morkCh_kN)
80 
81 /* is name (can continue a Mork name): */
82 #  define morkCh_IsMore(c) (morkCh_Type[(mork_ch)(c)] & morkCh_kM)
83 
84 /* is alphabetic upper or lower case */
85 #  define morkCh_IsAlpha(c) \
86     (morkCh_Type[(mork_ch)(c)] & (morkCh_kL | morkCh_kU))
87 
88 /* is alphanumeric, including lower case, upper case, and digits */
89 #  define morkCh_IsAlphaNum(c) \
90     (morkCh_Type[(mork_ch)(c)] & (morkCh_kL | morkCh_kU | morkCh_kD))
91 
92 /* ````` repeated testing of predicate bits in single flag byte ````` */
93 
94 #  define morkCh_GetFlags(c) (morkCh_Type[(mork_ch)(c)])
95 
96 #  define morkFlags_IsDigit(f) ((f)&morkCh_kD)
97 #  define morkFlags_IsHex(f) ((f)&morkCh_kX)
98 #  define morkFlags_IsValue(f) ((f)&morkCh_kV)
99 #  define morkFlags_IsWhite(f) ((f)&morkCh_kW)
100 #  define morkFlags_IsName(f) ((f)&morkCh_kN)
101 #  define morkFlags_IsMore(f) ((f)&morkCh_kM)
102 #  define morkFlags_IsAlpha(f) ((f) & (morkCh_kL | morkCh_kU))
103 #  define morkFlags_IsAlphaNum(f) ((f) & (morkCh_kL | morkCh_kU | morkCh_kD))
104 
105 #  define morkFlags_IsUpper(f) ((f)&morkCh_kU)
106 #  define morkFlags_IsLower(f) ((f)&morkCh_kL)
107 
108 /* ````` character case (e.g. for case insensitive operations) ````` */
109 
110 #  define morkCh_IsAscii(c) (((mork_u1)c) <= 0x7F)
111 #  define morkCh_IsSevenBitChar(c) (((mork_u1)c) <= 0x7F)
112 
113 /* ````` character case (e.g. for case insensitive operations) ````` */
114 
115 #  define morkCh_ToLower(c) ((c) - 'A' + 'a')
116 #  define morkCh_ToUpper(c) ((c) - 'a' + 'A')
117 
118 /* extern int morkCh_IsUpper (int c); */
119 #  define morkCh_IsUpper(c) (morkCh_Type[(mork_ch)(c)] & morkCh_kU)
120 
121 /* extern int morkCh_IsLower (int c); */
122 #  define morkCh_IsLower(c) (morkCh_Type[(mork_ch)(c)] & morkCh_kL)
123 
124 #endif
125 /* _MORKCH_ */
126