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cl349@firebug.cl.cam.ac.uk
519108b9f7
Nothing but vnet uses libxutil -- move it there. Makefile, xc.c, setup.py, configure, configure.in, Makefile.in: This doesn't use libxutil. Makefile, Makefile.vnet, Rules.mk: Move libxutil into vnet since it's only used there. Many files: mvdir
129 lines
3.4 KiB
C
129 lines
3.4 KiB
C
/*
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* Copyright (C) 2001 - 2004 Mike Wray <mike.wray@hp.com>
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*
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* This library is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation; either version 2.1 of the
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* License, or (at your option) any later version. This library is
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* distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE.
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* See the GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this library; if not, write to the Free Software Foundation,
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* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef _XUTIL_LEXIS_H_
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#define _XUTIL_LEXIS_H_
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#include "sys_string.h"
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#ifdef __KERNEL__
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# include <linux/ctype.h>
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#else
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# include <ctype.h>
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#endif
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/** @file
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* Lexical analysis.
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*/
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/** Class of characters treated as space. */
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#define space_class ((char []){ '\n', '\r', '\t', ' ', '\f' , 0 })
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/** Class of separator characters. */
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#define sep_class "{}()<>[]!;\"'"
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#define comment_class "#"
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/** Determine if a character is in a given class.
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*
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* @param c character to test
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* @param s null-terminated string of characters in the class
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* @return 1 if c is in the class, 0 otherwise.
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*/
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static inline int in_class(int c, const char *s){
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return s && (strchr(s, c) != 0);
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}
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/** Determine if a character is in the space class.
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*
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* @param c character to test
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* @return 1 if c is in the class, 0 otherwise.
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*/
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static inline int in_space_class(int c){
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return in_class(c, space_class);
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}
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static inline int in_comment_class(int c){
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return in_class(c, comment_class);
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}
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/** Determine if a character is in the separator class.
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* Separator characters terminate tokens, and do not need space
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* to separate them.
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*
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* @param c character to test
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* @return 1 if c is in the class, 0 otherwise.
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*/
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static inline int in_sep_class(int c){
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return in_class(c, sep_class);
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}
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/** Determine if a character is in the alpha class.
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*
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* @param c character to test
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* @return 1 if c is in the class, 0 otherwise.
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*/
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static inline int in_alpha_class(int c){
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return isalpha(c);
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}
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/** Determine if a character is in the octal digit class.
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*
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* @param c character to test
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* @return 1 if c is in the class, 0 otherwise.
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*/
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static inline int in_octal_digit_class(int c){
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return '0' <= c && c <= '7';
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}
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/** Determine if a character is in the decimal digit class.
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*
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* @param c character to test
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* @return 1 if c is in the class, 0 otherwise.
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*/
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static inline int in_decimal_digit_class(int c){
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return isdigit(c);
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}
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/** Determine if a character is in the hex digit class.
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*
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* @param c character to test
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* @return 1 if c is in the class, 0 otherwise.
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*/
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static inline int in_hex_digit_class(int c){
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return isdigit(c) || in_class(c, "abcdefABCDEF");
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}
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static inline int in_string_quote_class(int c){
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return in_class(c, "'\"");
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}
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static inline int in_printable_class(int c){
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return ('A' <= c && c <= 'Z')
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|| ('a' <= c && c <= 'z')
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|| ('0' <= c && c <= '9')
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|| in_class(c, "!$%&*+,-./:;<=>?@^_`{|}~");
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}
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extern int is_decimal_number(const char *s, int n);
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extern int is_hex_number(const char *s, int n);
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extern int is_keyword(const char *s, const char *k);
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extern int is_keychar(const char *s, char c);
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#endif /* !_XUTIL_LEXIS_H_ */
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