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+/* chartypes.h -- extend ctype.h */
+
+/* Copyright (C) 2001 Free Software Foundation, Inc.
+
+ This file is part of GNU Bash, the Bourne Again SHell.
+
+ Bash is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ Bash 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with Bash. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef _SH_CHARTYPES_H
+#define _SH_CHARTYPES_H
+
+#include <ctype.h>
+
+/* Jim Meyering writes:
+
+ "... Some ctype macros are valid only for character codes that
+ isascii says are ASCII (SGI's IRIX-4.0.5 is one such system --when
+ using /bin/cc or gcc but without giving an ansi option). So, all
+ ctype uses should be through macros like ISPRINT... If
+ STDC_HEADERS is defined, then autoconf has verified that the ctype
+ macros don't need to be guarded with references to isascii. ...
+ Defining IN_CTYPE_DOMAIN to 1 should let any compiler worth its salt
+ eliminate the && through constant folding."
+ Solaris defines some of these symbols so we must undefine them first. */
+
+#if defined STDC_HEADERS || (!defined isascii && !defined HAVE_ISASCII)
+# define IN_CTYPE_DOMAIN(c) 1
+#else
+# define IN_CTYPE_DOMAIN(c) isascii(c)
+#endif
+
+#if !defined (isspace) && !defined (HAVE_ISSPACE)
+# define isspace(c) ((c) == ' ' || (c) == '\t' || (c) == '\n' || (c) == '\f')
+#endif
+
+#if !defined (isprint) && !defined (HAVE_ISPRINT)
+# define isprint(c) (isalpha(c) || isdigit(c) || ispunct(c))
+#endif
+
+#if defined (isblank) || defined (HAVE_ISBLANK)
+# define ISBLANK(c) (IN_CTYPE_DOMAIN (c) && isblank (c))
+#else
+# define ISBLANK(c) ((c) == ' ' || (c) == '\t')
+#endif
+
+#if defined (isgraph) || defined (HAVE_ISGRAPH)
+# define ISGRAPH(c) (IN_CTYPE_DOMAIN (c) && isgraph (c))
+#else
+# define ISGRAPH(c) (IN_CTYPE_DOMAIN (c) && isprint (c) && !isspace (c))
+#endif
+
+#if !defined (isxdigit) && !defined (HAVE_ISXDIGIT)
+# define isxdigit(c) (((c) >= '0' && (c) <= '9') || ((c) >= 'a' && (c) <= 'f') || ((c) >= 'A' && (c) <= 'F'))
+#endif
+
+#undef ISPRINT
+
+#define ISPRINT(c) (IN_CTYPE_DOMAIN (c) && isprint (c))
+#define ISDIGIT(c) (IN_CTYPE_DOMAIN (c) && isdigit (c))
+#define ISALNUM(c) (IN_CTYPE_DOMAIN (c) && isalnum (c))
+#define ISALPHA(c) (IN_CTYPE_DOMAIN (c) && isalpha (c))
+#define ISCNTRL(c) (IN_CTYPE_DOMAIN (c) && iscntrl (c))
+#define ISLOWER(c) (IN_CTYPE_DOMAIN (c) && islower (c))
+#define ISPUNCT(c) (IN_CTYPE_DOMAIN (c) && ispunct (c))
+#define ISSPACE(c) (IN_CTYPE_DOMAIN (c) && isspace (c))
+#define ISUPPER(c) (IN_CTYPE_DOMAIN (c) && isupper (c))
+#define ISXDIGIT(c) (IN_CTYPE_DOMAIN (c) && isxdigit (c))
+
+#define ISLETTER(c) (ISALPHA(c))
+
+#define DIGIT(c) ((c) >= '0' && (c) <= '9')
+
+#define ISWORD(c) (ISLETTER(c) || DIGIT(c) || ((c) == '_'))
+
+#define HEXVALUE(c) \
+ (((c) >= 'a' && (c) <= 'f') \
+ ? (c)-'a'+10 \
+ : (c) >= 'A' && (c) <= 'F' ? (c)-'A'+10 : (c)-'0')
+
+#ifndef ISOCTAL
+# define ISOCTAL(c) ((c) >= '0' && (c) <= '7')
+#endif
+#define OCTVALUE(c) ((c) - '0')
+
+#define TODIGIT(c) ((c) - '0')
+#define TOCHAR(c) ((c) + '0')
+
+#define TOLOWER(c) (ISUPPER(c) ? tolower(c) : (c))
+#define TOUPPER(c) (ISLOWER(c) ? toupper(c) : (c))
+
+#ifndef TOCTRL
+ /* letter to control char -- ASCII. The TOUPPER is in there so \ce and
+ \cE will map to the same character in $'...' expansions. */
+# define TOCTRL(x) (TOUPPER(x) & 037)
+#endif
+#ifndef UNCTRL
+ /* control char to letter -- ASCII */
+# define UNCTRL(x) (TOUPPER((x) | 0x40))
+#endif
+
+#endif /* _SH_CHARTYPES_H */