include/cctype.h - manifest_repos/util-linux - Git at Google

 /**
  * Character handling in C locale.
  *
  * This file is based on gnulib c-ctype.h-dd7a871 with the
  * other gnulib dependencies removed for use in util-linux.
  *
  * These functions work like the corresponding functions in <ctype.h>,
  * except that they have the C (POSIX) locale hardwired, whereas the
  * <ctype.h> functions' behaviour depends on the current locale set via
  * setlocale.
  *
  * Copyright (C) 2000-2003, 2006, 2008-2017 Free Software Foundation, Inc.
  *
  * This program 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 2 of the License, or
  * (at your option) any later version.
  *
  * This program 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 this program; if not, see <http://www.gnu.org/licenses/>.
  */

 #ifndef UTIL_LINUX_CCTYPE_H
 #define UTIL_LINUX_CCTYPE_H

 /**
  * The functions defined in this file assume the "C" locale and a character
  * set without diacritics (ASCII-US or EBCDIC-US or something like that).
  * Even if the "C" locale on a particular system is an extension of the ASCII
  * character set (like on BeOS, where it is UTF-8, or on AmigaOS, where it
  * is ISO-8859-1), the functions in this file recognize only the ASCII
  * characters.
  */

 #if (' ' == 32) && ('!' == 33) && ('"' == 34) && ('#' == 35) \
 	&& ('%' == 37) && ('&' == 38) && ('\'' == 39) && ('(' == 40) \
 	&& (')' == 41) && ('*' == 42) && ('+' == 43) && (',' == 44) \
 	&& ('-' == 45) && ('.' == 46) && ('/' == 47) && ('0' == 48) \
 	&& ('1' == 49) && ('2' == 50) && ('3' == 51) && ('4' == 52) \
 	&& ('5' == 53) && ('6' == 54) && ('7' == 55) && ('8' == 56) \
 	&& ('9' == 57) && (':' == 58) && (';' == 59) && ('<' == 60) \
 	&& ('=' == 61) && ('>' == 62) && ('?' == 63) && ('A' == 65) \
 	&& ('B' == 66) && ('C' == 67) && ('D' == 68) && ('E' == 69) \
 	&& ('F' == 70) && ('G' == 71) && ('H' == 72) && ('I' == 73) \
 	&& ('J' == 74) && ('K' == 75) && ('L' == 76) && ('M' == 77) \
 	&& ('N' == 78) && ('O' == 79) && ('P' == 80) && ('Q' == 81) \
 	&& ('R' == 82) && ('S' == 83) && ('T' == 84) && ('U' == 85) \
 	&& ('V' == 86) && ('W' == 87) && ('X' == 88) && ('Y' == 89) \
 	&& ('Z' == 90) && ('[' == 91) && ('\\' == 92) && (']' == 93) \
 	&& ('^' == 94) && ('_' == 95) && ('a' == 97) && ('b' == 98) \
 	&& ('c' == 99) && ('d' == 100) && ('e' == 101) && ('f' == 102) \
 	&& ('g' == 103) && ('h' == 104) && ('i' == 105) && ('j' == 106) \
 	&& ('k' == 107) && ('l' == 108) && ('m' == 109) && ('n' == 110) \
 	&& ('o' == 111) && ('p' == 112) && ('q' == 113) && ('r' == 114) \
 	&& ('s' == 115) && ('t' == 116) && ('u' == 117) && ('v' == 118) \
 	&& ('w' == 119) && ('x' == 120) && ('y' == 121) && ('z' == 122) \
 	&& ('{' == 123) && ('|' == 124) && ('}' == 125) && ('~' == 126)

 /*
  * The character set is ASCII or one of its variants or extensions, not EBCDIC.
  * Testing the value of '\n' and '\r' is not relevant.
  */
 # define C_CTYPE_ASCII 1
 #elif ! (' ' == '\x40' && '0' == '\xf0'                     \
 	 && 'A' == '\xc1' && 'J' == '\xd1' && 'S' == '\xe2' \
 	 && 'a' == '\x81' && 'j' == '\x91' && 's' == '\xa2')
 # error "Only ASCII and EBCDIC are supported"
 #endif

 #if 'A' < 0
 # error "EBCDIC and char is signed -- not supported"
 #endif

 /* Cases for control characters. */
 #define _C_CTYPE_CNTRL \
 	case '\a': case '\b': case '\f': case '\n': \
 	case '\r': case '\t': case '\v': \
 	_C_CTYPE_OTHER_CNTRL

 /* ASCII control characters other than those with \-letter escapes. */
 #if C_CTYPE_ASCII
 # define _C_CTYPE_OTHER_CNTRL \
 	case '\x00': case '\x01': case '\x02': case '\x03': \
 	case '\x04': case '\x05': case '\x06': case '\x0e': \
 	case '\x0f': case '\x10': case '\x11': case '\x12': \
 	case '\x13': case '\x14': case '\x15': case '\x16': \
 	case '\x17': case '\x18': case '\x19': case '\x1a': \
 	case '\x1b': case '\x1c': case '\x1d': case '\x1e': \
 	case '\x1f': case '\x7f'
 #else

 /*
  * Use EBCDIC code page 1047's assignments for ASCII control chars;
  * assume all EBCDIC code pages agree about these assignments.
  */
 # define _C_CTYPE_OTHER_CNTRL \
 	case '\x00': case '\x01': case '\x02': case '\x03': \
 	case '\x07': case '\x0e': case '\x0f': case '\x10': \
 	case '\x11': case '\x12': case '\x13': case '\x18': \
 	case '\x19': case '\x1c': case '\x1d': case '\x1e': \
 	case '\x1f': case '\x26': case '\x27': case '\x2d': \
 	case '\x2e': case '\x32': case '\x37': case '\x3c': \
 	case '\x3d': case '\x3f'
 #endif

 /* Cases for lowercase hex letters, and lowercase letters, all offset by N. */
 #define _C_CTYPE_LOWER_A_THRU_F_N(N) \
 	case 'a' + (N): case 'b' + (N): case 'c' + (N): case 'd' + (N): \
 	case 'e' + (N): case 'f' + (N)
 #define _C_CTYPE_LOWER_N(N) \
 	_C_CTYPE_LOWER_A_THRU_F_N(N): \
 	case 'g' + (N): case 'h' + (N): case 'i' + (N): case 'j' + (N): \
 	case 'k' + (N): case 'l' + (N): case 'm' + (N): case 'n' + (N): \
 	case 'o' + (N): case 'p' + (N): case 'q' + (N): case 'r' + (N): \
 	case 's' + (N): case 't' + (N): case 'u' + (N): case 'v' + (N): \
 	case 'w' + (N): case 'x' + (N): case 'y' + (N): case 'z' + (N)

 /* Cases for hex letters, digits, lower, punct, and upper. */
 #define _C_CTYPE_A_THRU_F \
 	_C_CTYPE_LOWER_A_THRU_F_N (0): \
 	_C_CTYPE_LOWER_A_THRU_F_N ('A' - 'a')
 #define _C_CTYPE_DIGIT                     \
 	case '0': case '1': case '2': case '3': \
 	case '4': case '5': case '6': case '7': \
 	case '8': case '9'
 #define _C_CTYPE_LOWER _C_CTYPE_LOWER_N (0)
 #define _C_CTYPE_PUNCT \
 	case '!': case '"': case '#': case '$':  \
 	case '%': case '&': case '\'': case '(': \
 	case ')': case '*': case '+': case ',':  \
 	case '-': case '.': case '/': case ':':  \
 	case ';': case '<': case '=': case '>':  \
 	case '?': case '@': case '[': case '\\': \
 	case ']': case '^': case '_': case '`':  \
 	case '{': case '|': case '}': case '~'
 #define _C_CTYPE_UPPER _C_CTYPE_LOWER_N ('A' - 'a')

 /**
  * Function definitions.
  *
  * Unlike the functions in <ctype.h>, which require an argument in the range
  * of the 'unsigned char' type, the functions here operate on values that are
  * in the 'unsigned char' range or in the 'char' range.  In other words,
  * when you have a 'char' value, you need to cast it before using it as
  * argument to a <ctype.h> function:
  *
  * 	const char *s = ...;
  * 	if (isalpha ((unsigned char) *s)) ...
  *
  * but you don't need to cast it for the functions defined in this file:
  *
  * 	const char *s = ...;
  * 	if (c_isalpha (*s)) ...
  */

 static inline int c_isalnum (int c)
 {
 	switch (c) {
 	_C_CTYPE_DIGIT:
 	_C_CTYPE_LOWER:
 	_C_CTYPE_UPPER:
 		return 1;
 	default:
 		return 0;
 	}
 }

 static inline int c_isalpha (int c)
 {
 	switch (c) {
 	_C_CTYPE_LOWER:
 	_C_CTYPE_UPPER:
 		return 1;
 	default:
 		return 0;
 	}
 }

 /* The function isascii is not locale dependent.
  * Its use in EBCDIC is questionable.
  */
 static inline int c_isascii (int c)
 {
 	switch (c) {
 	case ' ':
 	_C_CTYPE_CNTRL:
 	_C_CTYPE_DIGIT:
 	_C_CTYPE_LOWER:
 	_C_CTYPE_PUNCT:
 	_C_CTYPE_UPPER:
 		return 1;
 	default:
 		return 0;
 	}
 }

 static inline int c_isblank (int c)
 {
 	return c == ' ' || c == '\t';
 }

 static inline int c_iscntrl (int c)
 {
 	switch (c) {
 	_C_CTYPE_CNTRL:
 		return 1;
 	default:
 		return 0;
 	}
 }

 static inline int c_isdigit (int c)
 {
 	switch (c) {
 	_C_CTYPE_DIGIT:
 		return 1;
 	default:
 		return 0;
 	}
 }

 static inline int c_isgraph (int c)
 {
 	switch (c) {
 	_C_CTYPE_DIGIT:
 	_C_CTYPE_LOWER:
 	_C_CTYPE_PUNCT:
 	_C_CTYPE_UPPER:
 		return 1;
 	default:
 		return 0;
 	}
 }

 static inline int c_islower (int c)
 {
 	switch (c) {
 	_C_CTYPE_LOWER:
 		return 1;
 	default:
 		return 0;
 	}
 }

 static inline int c_isprint (int c)
 {
 	switch (c) {
 	case ' ':
 	_C_CTYPE_DIGIT:
 	_C_CTYPE_LOWER:
 	_C_CTYPE_PUNCT:
 	_C_CTYPE_UPPER:
 		return 1;
 	default:
 		return 0;
 	}
 }

 static inline int c_ispunct (int c)
 {
 	switch (c) {
 	_C_CTYPE_PUNCT:
 		return 1;
 	default:
 		return 0;
 	}
 }

 static inline int c_isspace (int c)
 {
 	switch (c) {
 	case ' ': case '\t': case '\n': case '\v': case '\f': case '\r':
 		return 1;
 	default:
 		return 0;
 	}
 }

 static inline int c_isupper (int c)
 {
 	switch (c) {
 	_C_CTYPE_UPPER:
 		return 1;
 	default:
 		return 0;
 	}
 }

 static inline int c_isxdigit (int c)
 {
 	switch (c) {
 	_C_CTYPE_DIGIT:
 	_C_CTYPE_A_THRU_F:
 		return 1;
 	default:
 		return 0;
 	}
 }

 static inline int c_tolower (int c)
 {
 	switch (c) {
 	_C_CTYPE_UPPER:
 		return c - 'A' + 'a';
 	default:
 		return c;
 	}
 }

 static inline int c_toupper (int c)
 {
 	switch (c) {
 	_C_CTYPE_LOWER:
 		return c - 'a' + 'A';
 	default:
 		return c;
 	}
 }

 #endif /* UTIL_LINUX_CCTYPE_H */
	/**
	* Character handling in C locale.
	*
	* This file is based on gnulib c-ctype.h-dd7a871 with the
	* other gnulib dependencies removed for use in util-linux.
	*
	* These functions work like the corresponding functions in <ctype.h>,
	* except that they have the C (POSIX) locale hardwired, whereas the
	* <ctype.h> functions' behaviour depends on the current locale set via
	* setlocale.
	*
	* Copyright (C) 2000-2003, 2006, 2008-2017 Free Software Foundation, Inc.
	*
	* This program 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 2 of the License, or
	* (at your option) any later version.
	*
	* This program 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 this program; if not, see <http://www.gnu.org/licenses/>.
	*/

	#ifndef UTIL_LINUX_CCTYPE_H
	#define UTIL_LINUX_CCTYPE_H

	/**
	* The functions defined in this file assume the "C" locale and a character
	* set without diacritics (ASCII-US or EBCDIC-US or something like that).
	* Even if the "C" locale on a particular system is an extension of the ASCII
	* character set (like on BeOS, where it is UTF-8, or on AmigaOS, where it
	* is ISO-8859-1), the functions in this file recognize only the ASCII
	* characters.
	*/

	#if (' ' == 32) && ('!' == 33) && ('"' == 34) && ('#' == 35) \
	&& ('%' == 37) && ('&' == 38) && ('\'' == 39) && ('(' == 40) \
	&& (')' == 41) && ('*' == 42) && ('+' == 43) && (',' == 44) \
	&& ('-' == 45) && ('.' == 46) && ('/' == 47) && ('0' == 48) \
	&& ('1' == 49) && ('2' == 50) && ('3' == 51) && ('4' == 52) \
	&& ('5' == 53) && ('6' == 54) && ('7' == 55) && ('8' == 56) \
	&& ('9' == 57) && (':' == 58) && (';' == 59) && ('<' == 60) \
	&& ('=' == 61) && ('>' == 62) && ('?' == 63) && ('A' == 65) \
	&& ('B' == 66) && ('C' == 67) && ('D' == 68) && ('E' == 69) \
	&& ('F' == 70) && ('G' == 71) && ('H' == 72) && ('I' == 73) \
	&& ('J' == 74) && ('K' == 75) && ('L' == 76) && ('M' == 77) \
	&& ('N' == 78) && ('O' == 79) && ('P' == 80) && ('Q' == 81) \
	&& ('R' == 82) && ('S' == 83) && ('T' == 84) && ('U' == 85) \
	&& ('V' == 86) && ('W' == 87) && ('X' == 88) && ('Y' == 89) \
	&& ('Z' == 90) && ('[' == 91) && ('\\' == 92) && (']' == 93) \
	&& ('^' == 94) && ('_' == 95) && ('a' == 97) && ('b' == 98) \
	&& ('c' == 99) && ('d' == 100) && ('e' == 101) && ('f' == 102) \
	&& ('g' == 103) && ('h' == 104) && ('i' == 105) && ('j' == 106) \
	&& ('k' == 107) && ('l' == 108) && ('m' == 109) && ('n' == 110) \
	&& ('o' == 111) && ('p' == 112) && ('q' == 113) && ('r' == 114) \
	&& ('s' == 115) && ('t' == 116) && ('u' == 117) && ('v' == 118) \
	&& ('w' == 119) && ('x' == 120) && ('y' == 121) && ('z' == 122) \
	&& ('{' == 123) && ('\|' == 124) && ('}' == 125) && ('~' == 126)

	/*
	* The character set is ASCII or one of its variants or extensions, not EBCDIC.
	* Testing the value of '\n' and '\r' is not relevant.
	*/
	# define C_CTYPE_ASCII 1
	#elif ! (' ' == '\x40' && '0' == '\xf0' \
	&& 'A' == '\xc1' && 'J' == '\xd1' && 'S' == '\xe2' \
	&& 'a' == '\x81' && 'j' == '\x91' && 's' == '\xa2')
	# error "Only ASCII and EBCDIC are supported"
	#endif

	#if 'A' < 0
	# error "EBCDIC and char is signed -- not supported"
	#endif

	/* Cases for control characters. */
	#define _C_CTYPE_CNTRL \
	case '\a': case '\b': case '\f': case '\n': \
	case '\r': case '\t': case '\v': \
	_C_CTYPE_OTHER_CNTRL

	/* ASCII control characters other than those with \-letter escapes. */
	#if C_CTYPE_ASCII
	# define _C_CTYPE_OTHER_CNTRL \
	case '\x00': case '\x01': case '\x02': case '\x03': \
	case '\x04': case '\x05': case '\x06': case '\x0e': \
	case '\x0f': case '\x10': case '\x11': case '\x12': \
	case '\x13': case '\x14': case '\x15': case '\x16': \
	case '\x17': case '\x18': case '\x19': case '\x1a': \
	case '\x1b': case '\x1c': case '\x1d': case '\x1e': \
	case '\x1f': case '\x7f'
	#else

	/*
	* Use EBCDIC code page 1047's assignments for ASCII control chars;
	* assume all EBCDIC code pages agree about these assignments.
	*/
	# define _C_CTYPE_OTHER_CNTRL \
	case '\x00': case '\x01': case '\x02': case '\x03': \
	case '\x07': case '\x0e': case '\x0f': case '\x10': \
	case '\x11': case '\x12': case '\x13': case '\x18': \
	case '\x19': case '\x1c': case '\x1d': case '\x1e': \
	case '\x1f': case '\x26': case '\x27': case '\x2d': \
	case '\x2e': case '\x32': case '\x37': case '\x3c': \
	case '\x3d': case '\x3f'
	#endif

	/* Cases for lowercase hex letters, and lowercase letters, all offset by N. */
	#define _C_CTYPE_LOWER_A_THRU_F_N(N) \
	case 'a' + (N): case 'b' + (N): case 'c' + (N): case 'd' + (N): \
	case 'e' + (N): case 'f' + (N)
	#define _C_CTYPE_LOWER_N(N) \
	_C_CTYPE_LOWER_A_THRU_F_N(N): \
	case 'g' + (N): case 'h' + (N): case 'i' + (N): case 'j' + (N): \
	case 'k' + (N): case 'l' + (N): case 'm' + (N): case 'n' + (N): \
	case 'o' + (N): case 'p' + (N): case 'q' + (N): case 'r' + (N): \
	case 's' + (N): case 't' + (N): case 'u' + (N): case 'v' + (N): \
	case 'w' + (N): case 'x' + (N): case 'y' + (N): case 'z' + (N)

	/* Cases for hex letters, digits, lower, punct, and upper. */
	#define _C_CTYPE_A_THRU_F \
	_C_CTYPE_LOWER_A_THRU_F_N (0): \
	_C_CTYPE_LOWER_A_THRU_F_N ('A' - 'a')
	#define _C_CTYPE_DIGIT \
	case '0': case '1': case '2': case '3': \
	case '4': case '5': case '6': case '7': \
	case '8': case '9'
	#define _C_CTYPE_LOWER _C_CTYPE_LOWER_N (0)
	#define _C_CTYPE_PUNCT \
	case '!': case '"': case '#': case '$': \
	case '%': case '&': case '\'': case '(': \
	case ')': case '*': case '+': case ',': \
	case '-': case '.': case '/': case ':': \
	case ';': case '<': case '=': case '>': \
	case '?': case '@': case '[': case '\\': \
	case ']': case '^': case '_': case '`': \
	case '{': case '\|': case '}': case '~'
	#define _C_CTYPE_UPPER _C_CTYPE_LOWER_N ('A' - 'a')

	/**
	* Function definitions.
	*
	* Unlike the functions in <ctype.h>, which require an argument in the range
	* of the 'unsigned char' type, the functions here operate on values that are
	* in the 'unsigned char' range or in the 'char' range. In other words,
	* when you have a 'char' value, you need to cast it before using it as
	* argument to a <ctype.h> function:
	*
	* const char *s = ...;
	* if (isalpha ((unsigned char) *s)) ...
	*
	* but you don't need to cast it for the functions defined in this file:
	*
	* const char *s = ...;
	* if (c_isalpha (*s)) ...
	*/

	static inline int c_isalnum (int c)
	{
	switch (c) {
	_C_CTYPE_DIGIT:
	_C_CTYPE_LOWER:
	_C_CTYPE_UPPER:
	return 1;
	default:
	return 0;
	}
	}

	static inline int c_isalpha (int c)
	{
	switch (c) {
	_C_CTYPE_LOWER:
	_C_CTYPE_UPPER:
	return 1;
	default:
	return 0;
	}
	}

	/* The function isascii is not locale dependent.
	* Its use in EBCDIC is questionable.
	*/
	static inline int c_isascii (int c)
	{
	switch (c) {
	case ' ':
	_C_CTYPE_CNTRL:
	_C_CTYPE_DIGIT:
	_C_CTYPE_LOWER:
	_C_CTYPE_PUNCT:
	_C_CTYPE_UPPER:
	return 1;
	default:
	return 0;
	}
	}

	static inline int c_isblank (int c)
	{
	return c == ' ' \|\| c == '\t';
	}

	static inline int c_iscntrl (int c)
	{
	switch (c) {
	_C_CTYPE_CNTRL:
	return 1;
	default:
	return 0;
	}
	}

	static inline int c_isdigit (int c)
	{
	switch (c) {
	_C_CTYPE_DIGIT:
	return 1;
	default:
	return 0;
	}
	}

	static inline int c_isgraph (int c)
	{
	switch (c) {
	_C_CTYPE_DIGIT:
	_C_CTYPE_LOWER:
	_C_CTYPE_PUNCT:
	_C_CTYPE_UPPER:
	return 1;
	default:
	return 0;
	}
	}

	static inline int c_islower (int c)
	{
	switch (c) {
	_C_CTYPE_LOWER:
	return 1;
	default:
	return 0;
	}
	}

	static inline int c_isprint (int c)
	{
	switch (c) {
	case ' ':
	_C_CTYPE_DIGIT:
	_C_CTYPE_LOWER:
	_C_CTYPE_PUNCT:
	_C_CTYPE_UPPER:
	return 1;
	default:
	return 0;
	}
	}

	static inline int c_ispunct (int c)
	{
	switch (c) {
	_C_CTYPE_PUNCT:
	return 1;
	default:
	return 0;
	}
	}

	static inline int c_isspace (int c)
	{
	switch (c) {
	case ' ': case '\t': case '\n': case '\v': case '\f': case '\r':
	return 1;
	default:
	return 0;
	}
	}

	static inline int c_isupper (int c)
	{
	switch (c) {
	_C_CTYPE_UPPER:
	return 1;
	default:
	return 0;
	}
	}

	static inline int c_isxdigit (int c)
	{
	switch (c) {
	_C_CTYPE_DIGIT:
	_C_CTYPE_A_THRU_F:
	return 1;
	default:
	return 0;
	}
	}

	static inline int c_tolower (int c)
	{
	switch (c) {
	_C_CTYPE_UPPER:
	return c - 'A' + 'a';
	default:
	return c;
	}
	}

	static inline int c_toupper (int c)
	{
	switch (c) {
	_C_CTYPE_LOWER:
	return c - 'a' + 'A';
	default:
	return c;
	}
	}

	#endif /* UTIL_LINUX_CCTYPE_H */