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1 line
3.6 KiB
C
Executable File
1 line
3.6 KiB
C
Executable File
/***********************************************************************\
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Product Number: PROXLIB-01-2.0
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Version: rev2.0
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Product Name: Proximity Subroutine Library
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Filename: cschar.h
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This document contains private and confidential information and
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its disclosure does not constitute publication. Some of the
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information herein also may appear in United States and or
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Foreign Patents Pending. All rights are reserved by Proximity
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Technology Inc., except those specifically granted by license.
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\***********************************************************************/
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#ifndef _CSCHAR
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#define _CSCHAR
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#ifndef _PROXLIB
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#include "proxlib.h"
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#endif
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/* Character type bits and bit masks */
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#define _CSPRINT 0x01 /* bit for random valid characters */
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#define _CSWORD 0x1E /* bits for characters valid in word */
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#define _CSINWORD 0x02 /* bit for a non-alpha valid in word */
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#define _CSALPHA 0x1C /* bits for an alphabetic character */
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#define _CSLOWER 0x04 /* bit for a lower case letter */
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#define _CSUPPER 0x08 /* bit for an upper case letter */
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#define _CSSCASE 0x10 /* bit for a single case letter */
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/* scharfes S is an example of above */
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#define _CSDIGIT 0x20 /* bit for digit character */
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#define _CSHEX 0x40 /* bit for hex digit character */
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/* Character classification table & macros. These work for all UCHAR values
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(e.g. 0-255). */
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extern UCHAR Csctype[];
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#define csprint(cc) (Csctype[cc])
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#define csword(cc) (Csctype[cc] & _CSINWORD)
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#define csalpha(cc) (Csctype[cc] & _CSALPHA)
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#define cslower(cc) (Csctype[cc] & _CSLOWER)
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#define csupper(cc) (Csctype[cc] & _CSUPPER)
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#define csscase(cc) (Csctype[cc] & _CSSCASE)
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#define csdigit(cc) (Csctype[cc] & _CSDIGIT)
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#define cshex(cc) (Csctype[cc] & (_CSHEX|_CSDIGIT))
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/* Character conversion tables & macros. These work for all UCHAR values
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(e.g. 0-255). */
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extern UCHAR Cstolower[]; /* table to convert to lower case */
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extern UCHAR Cstoupper[]; /* table to convert to upper case */
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#define cstolower(cc) (ctoi(Cstolower[cc])) /* convert to lower case */
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#define cstoupper(cc) (ctoi(Cstoupper[cc])) /* convert to upper case */
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/* Character ordering macro. The values returned by this macro are ordered
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so that characters which are modified versions of other characters occur
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after their base characters but before others that have different base
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characters. The base letters (but not other characters) are ordered in
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the standard ASCII order. All control characters are mapped to zero.
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Space is mapped after controls and before letters. Letters come next.
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Non-letters come last.
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Letters are ordered in pairs, upper case then lower case. Those letters
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which have a single case use two order positions. The letters start with
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an even order value. These allow case insensitive matching: if c1 and c2
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are letters then
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order = (cstoorder(*c1) - cstoorder(*c2)) >> 1;
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if (order < 0) {
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(* c1 letter before c2 letter. *)
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} else if (order == 0) {
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(* letters equal *)
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} else { (* order > 0 *)
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(* c1 letter after c2 letter. *)
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}
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compares the two letters ignoring case.
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Note that the values assigned by this macro have no special meaning and
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can be changed from release to release. The only purpose which they can
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be used for (and continue to work) is comparison with other values from
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the same macro.
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*/
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extern UCHAR Cstoorder[]; /* table to get collating order */
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#define cstoorder(cc) (ctoi(Cstoorder[cc])) /* get collating order */
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#endif /* _CSCHAR */
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