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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 01:47:29 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 01:47:29 +0000 |
commit | 0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d (patch) | |
tree | a31f07c9bcca9d56ce61e9a1ffd30ef350d513aa /intl/icu/source/common/uinvchar.h | |
parent | Initial commit. (diff) | |
download | firefox-esr-0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d.tar.xz firefox-esr-0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d.zip |
Adding upstream version 115.8.0esr.upstream/115.8.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'intl/icu/source/common/uinvchar.h')
-rw-r--r-- | intl/icu/source/common/uinvchar.h | 219 |
1 files changed, 219 insertions, 0 deletions
diff --git a/intl/icu/source/common/uinvchar.h b/intl/icu/source/common/uinvchar.h new file mode 100644 index 0000000000..9b7a9bd114 --- /dev/null +++ b/intl/icu/source/common/uinvchar.h @@ -0,0 +1,219 @@ +// © 2016 and later: Unicode, Inc. and others. +// License & terms of use: http://www.unicode.org/copyright.html +/* +******************************************************************************* +* +* Copyright (C) 1999-2015, International Business Machines +* Corporation and others. All Rights Reserved. +* +******************************************************************************* +* file name: uinvchar.h +* encoding: UTF-8 +* tab size: 8 (not used) +* indentation:2 +* +* created on: 2004sep14 +* created by: Markus W. Scherer +* +* Definitions for handling invariant characters, moved here from putil.c +* for better modularization. +*/ + +#ifndef __UINVCHAR_H__ +#define __UINVCHAR_H__ + +#include "unicode/utypes.h" +#ifdef __cplusplus +#include "unicode/unistr.h" +#endif + +/** + * Check if a char string only contains invariant characters. + * See utypes.h for details. + * + * @param s Input string pointer. + * @param length Length of the string, can be -1 if NUL-terminated. + * @return true if s contains only invariant characters. + * + * @internal (ICU 2.8) + */ +U_CAPI UBool U_EXPORT2 +uprv_isInvariantString(const char *s, int32_t length); + +/** + * Check if a Unicode string only contains invariant characters. + * See utypes.h for details. + * + * @param s Input string pointer. + * @param length Length of the string, can be -1 if NUL-terminated. + * @return true if s contains only invariant characters. + * + * @internal (ICU 2.8) + */ +U_CAPI UBool U_EXPORT2 +uprv_isInvariantUString(const UChar *s, int32_t length); + +/** + * \def U_UPPER_ORDINAL + * Get the ordinal number of an uppercase invariant character + * @internal + */ +#if U_CHARSET_FAMILY==U_ASCII_FAMILY +# define U_UPPER_ORDINAL(x) ((x)-'A') +#elif U_CHARSET_FAMILY==U_EBCDIC_FAMILY +# define U_UPPER_ORDINAL(x) (((x) < 'J') ? ((x)-'A') : \ + (((x) < 'S') ? ((x)-'J'+9) : \ + ((x)-'S'+18))) +#else +# error Unknown charset family! +#endif + +#ifdef __cplusplus + +U_NAMESPACE_BEGIN + +/** + * Like U_UPPER_ORDINAL(x) but with validation. + * Returns 0..25 for A..Z else a value outside 0..25. + */ +inline int32_t uprv_upperOrdinal(int32_t c) { +#if U_CHARSET_FAMILY==U_ASCII_FAMILY + return c - 'A'; +#elif U_CHARSET_FAMILY==U_EBCDIC_FAMILY + // EBCDIC: A-Z (26 letters) is split into three ranges A-I (9 letters), J-R (9), S-Z (8). + // https://en.wikipedia.org/wiki/EBCDIC_037#Codepage_layout + if (c <= 'I') { return c - 'A'; } // A-I --> 0-8 + if (c < 'J') { return -1; } + if (c <= 'R') { return c - 'J' + 9; } // J-R --> 9..17 + if (c < 'S') { return -1; } + return c - 'S' + 18; // S-Z --> 18..25 +#else +# error Unknown charset family! +#endif +} + +// Like U_UPPER_ORDINAL(x) but for lowercase and with validation. +// Returns 0..25 for a..z else a value outside 0..25. +inline int32_t uprv_lowerOrdinal(int32_t c) { +#if U_CHARSET_FAMILY==U_ASCII_FAMILY + return c - 'a'; +#elif U_CHARSET_FAMILY==U_EBCDIC_FAMILY + // EBCDIC: a-z (26 letters) is split into three ranges a-i (9 letters), j-r (9), s-z (8). + // https://en.wikipedia.org/wiki/EBCDIC_037#Codepage_layout + if (c <= 'i') { return c - 'a'; } // a-i --> 0-8 + if (c < 'j') { return -1; } + if (c <= 'r') { return c - 'j' + 9; } // j-r --> 9..17 + if (c < 's') { return -1; } + return c - 's' + 18; // s-z --> 18..25 +#else +# error Unknown charset family! +#endif +} + +U_NAMESPACE_END + +#endif + +/** + * Returns true if c == '@' is possible. + * The @ sign is variant, and the @ sign used on one + * EBCDIC machine won't be compiled the same way on other EBCDIC based machines. + * @internal + */ +U_CFUNC UBool +uprv_isEbcdicAtSign(char c); + +/** + * \def uprv_isAtSign + * Returns true if c == '@' is possible. + * For ASCII, checks for exactly '@'. For EBCDIC, calls uprv_isEbcdicAtSign(). + * @internal + */ +#if U_CHARSET_FAMILY==U_ASCII_FAMILY +# define uprv_isAtSign(c) ((c)=='@') +#elif U_CHARSET_FAMILY==U_EBCDIC_FAMILY +# define uprv_isAtSign(c) uprv_isEbcdicAtSign(c) +#else +# error Unknown charset family! +#endif + +/** + * Compare two EBCDIC invariant-character strings in ASCII order. + * @internal + */ +U_CAPI int32_t U_EXPORT2 +uprv_compareInvEbcdicAsAscii(const char *s1, const char *s2); + +/** + * \def uprv_compareInvCharsAsAscii + * Compare two invariant-character strings in ASCII order. + * @internal + */ +#if U_CHARSET_FAMILY==U_ASCII_FAMILY +# define uprv_compareInvCharsAsAscii(s1, s2) uprv_strcmp(s1, s2) +#elif U_CHARSET_FAMILY==U_EBCDIC_FAMILY +# define uprv_compareInvCharsAsAscii(s1, s2) uprv_compareInvEbcdicAsAscii(s1, s2) +#else +# error Unknown charset family! +#endif + +/** + * Converts an EBCDIC invariant character to ASCII. + * @internal + */ +U_CAPI char U_EXPORT2 +uprv_ebcdicToAscii(char c); + +/** + * \def uprv_invCharToAscii + * Converts an invariant character to ASCII. + * @internal + */ +#if U_CHARSET_FAMILY==U_ASCII_FAMILY +# define uprv_invCharToAscii(c) (c) +#elif U_CHARSET_FAMILY==U_EBCDIC_FAMILY +# define uprv_invCharToAscii(c) uprv_ebcdicToAscii(c) +#else +# error Unknown charset family! +#endif + +/** + * Converts an EBCDIC invariant character to lowercase ASCII. + * @internal + */ +U_CAPI char U_EXPORT2 +uprv_ebcdicToLowercaseAscii(char c); + +/** + * \def uprv_invCharToLowercaseAscii + * Converts an invariant character to lowercase ASCII. + * @internal + */ +#if U_CHARSET_FAMILY==U_ASCII_FAMILY +# define uprv_invCharToLowercaseAscii uprv_asciitolower +#elif U_CHARSET_FAMILY==U_EBCDIC_FAMILY +# define uprv_invCharToLowercaseAscii uprv_ebcdicToLowercaseAscii +#else +# error Unknown charset family! +#endif + +/** + * Copy EBCDIC to ASCII + * @internal + * @see uprv_strncpy + */ +U_CAPI uint8_t* U_EXPORT2 +uprv_aestrncpy(uint8_t *dst, const uint8_t *src, int32_t n); + + +/** + * Copy ASCII to EBCDIC + * @internal + * @see uprv_strncpy + */ +U_CAPI uint8_t* U_EXPORT2 +uprv_eastrncpy(uint8_t *dst, const uint8_t *src, int32_t n); + + + +#endif |