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/* $Id$ */
/*
* This file is part of OpenTTD.
* OpenTTD 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, version 2.
* OpenTTD 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 OpenTTD. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file string_type.h Types for strings. */
#ifndef STRING_TYPE_H
#define STRING_TYPE_H
/** A non-breaking space. */
#define NBSP "\xC2\xA0"
/** A left-to-right marker, marks the next character as left-to-right. */
#define LRM "\xE2\x80\x8E"
/**
* Valid filter types for IsValidChar.
*/
enum CharSetFilter {
CS_ALPHANUMERAL, ///< Both numeric and alphabetic and spaces and stuff
CS_NUMERAL, ///< Only numeric ones
CS_NUMERAL_SPACE, ///< Only numbers and spaces
CS_ALPHA, ///< Only alphabetic values
CS_HEXADECIMAL, ///< Only hexadecimal characters
};
typedef uint32 WChar;
/* The following are directional formatting codes used to get the LTR and RTL strings right:
* http://www.unicode.org/unicode/reports/tr9/#Directional_Formatting_Codes */
static const WChar CHAR_TD_LRM = 0x200E; ///< The next character acts like a left-to-right character.
static const WChar CHAR_TD_RLM = 0x200F; ///< The next character acts like a right-to-left character.
static const WChar CHAR_TD_LRE = 0x202A; ///< The following text is embedded left-to-right.
static const WChar CHAR_TD_RLE = 0x202B; ///< The following text is embedded right-to-left.
static const WChar CHAR_TD_LRO = 0x202D; ///< Force the following characters to be treated as left-to-right characters.
static const WChar CHAR_TD_RLO = 0x202E; ///< Force the following characters to be treated as right-to-left characters.
static const WChar CHAR_TD_PDF = 0x202C; ///< Restore the text-direction state to before the last LRE, RLE, LRO or RLO.
#endif /* STRING_TYPE_H */
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