268 lines
7.3 KiB
C++
268 lines
7.3 KiB
C++
/*
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*******************************************************************************
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* Copyright (C) 2013, International Business Machines
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* Corporation and others. All Rights Reserved.
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*******************************************************************************
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* file name: uscript_props.cpp
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* encoding: US-ASCII
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* tab size: 8 (not used)
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* indentation:4
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*
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* created on: 2013feb16
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* created by: Markus W. Scherer
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*/
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#include "unicode/utypes.h"
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#include "unicode/unistr.h"
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#include "unicode/uscript.h"
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#include "unicode/utf16.h"
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#include "ustr_imp.h"
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#define LENGTHOF(array) (int32_t)(sizeof(array)/sizeof((array)[0]))
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namespace {
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// Script metadata (script properties).
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// See http://unicode.org/cldr/trac/browser/trunk/common/properties/scriptMetadata.txt
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// 0 = NOT_ENCODED, no sample character, default false script properties.
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// Bits 20.. 0: sample character
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// Bits 23..21: usage
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const int32_t UNKNOWN = 1 << 21;
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const int32_t EXCLUSION = 2 << 21;
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const int32_t LIMITED_USE = 3 << 21;
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const int32_t ASPIRATIONAL = 4 << 21;
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const int32_t RECOMMENDED = 5 << 21;
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// Bits 31..24: Single-bit flags
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const int32_t RTL = 1 << 24;
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const int32_t LB_LETTERS = 1 << 25;
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const int32_t CASED = 1 << 26;
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const int32_t SCRIPT_PROPS[] = {
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// Begin copy-paste output from
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// tools/trunk/unicode/py/parsescriptmetadata.py
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0x0040 | UNKNOWN, // Zyyy
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0x0308 | UNKNOWN, // Zinh
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0x0628 | RECOMMENDED | RTL, // Arab
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0x0531 | RECOMMENDED | CASED, // Armn
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0x0995 | RECOMMENDED, // Beng
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0x3105 | RECOMMENDED | LB_LETTERS, // Bopo
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0x13C4 | LIMITED_USE, // Cher
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0x03E2 | EXCLUSION | CASED, // Copt
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0x042F | RECOMMENDED | CASED, // Cyrl
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0x10414 | EXCLUSION | CASED, // Dsrt
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0x0905 | RECOMMENDED, // Deva
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0x12A0 | RECOMMENDED, // Ethi
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0x10D3 | RECOMMENDED, // Geor
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0x10330 | EXCLUSION, // Goth
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0x03A9 | RECOMMENDED | CASED, // Grek
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0x0A95 | RECOMMENDED, // Gujr
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0x0A15 | RECOMMENDED, // Guru
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0x5B57 | RECOMMENDED | LB_LETTERS, // Hani
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0xAC00 | RECOMMENDED, // Hang
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0x05D0 | RECOMMENDED | RTL, // Hebr
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0x304B | RECOMMENDED | LB_LETTERS, // Hira
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0x0C95 | RECOMMENDED, // Knda
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0x30AB | RECOMMENDED | LB_LETTERS, // Kana
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0x1780 | RECOMMENDED | LB_LETTERS, // Khmr
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0x0EA5 | RECOMMENDED | LB_LETTERS, // Laoo
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0x004C | RECOMMENDED | CASED, // Latn
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0x0D15 | RECOMMENDED, // Mlym
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0x1826 | ASPIRATIONAL, // Mong
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0x1000 | RECOMMENDED | LB_LETTERS, // Mymr
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0x168F | EXCLUSION, // Ogam
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0x10300 | EXCLUSION, // Ital
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0x0B15 | RECOMMENDED, // Orya
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0x16A0 | EXCLUSION, // Runr
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0x0D85 | RECOMMENDED, // Sinh
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0x0710 | LIMITED_USE | RTL, // Syrc
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0x0B95 | RECOMMENDED, // Taml
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0x0C15 | RECOMMENDED, // Telu
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0x078C | RECOMMENDED | RTL, // Thaa
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0x0E17 | RECOMMENDED | LB_LETTERS, // Thai
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0x0F40 | RECOMMENDED, // Tibt
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0x14C0 | ASPIRATIONAL, // Cans
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0xA288 | ASPIRATIONAL | LB_LETTERS, // Yiii
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0x1703 | EXCLUSION, // Tglg
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0x1723 | EXCLUSION, // Hano
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0x1743 | EXCLUSION, // Buhd
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0x1763 | EXCLUSION, // Tagb
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0x2800 | UNKNOWN, // Brai
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0x10800 | EXCLUSION | RTL, // Cprt
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0x1900 | LIMITED_USE, // Limb
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0x10000 | EXCLUSION, // Linb
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0x10480 | EXCLUSION, // Osma
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0x10450 | EXCLUSION, // Shaw
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0x1950 | LIMITED_USE | LB_LETTERS, // Tale
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0x10380 | EXCLUSION, // Ugar
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0,
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0x1A00 | EXCLUSION, // Bugi
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0x2C00 | EXCLUSION | CASED, // Glag
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0x10A00 | EXCLUSION | RTL, // Khar
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0xA800 | LIMITED_USE, // Sylo
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0x1980 | LIMITED_USE | LB_LETTERS, // Talu
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0x2D30 | ASPIRATIONAL, // Tfng
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0x103A0 | EXCLUSION, // Xpeo
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0x1B05 | LIMITED_USE | LB_LETTERS, // Bali
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0x1BC0 | LIMITED_USE, // Batk
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0,
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0x11005 | EXCLUSION, // Brah
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0xAA00 | LIMITED_USE, // Cham
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0,
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0,
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0,
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0,
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0x13153 | EXCLUSION, // Egyp
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0,
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0x5B57 | RECOMMENDED | LB_LETTERS, // Hans
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0x5B57 | RECOMMENDED | LB_LETTERS, // Hant
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0,
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0,
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0,
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0xA984 | LIMITED_USE | LB_LETTERS, // Java
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0xA90A | LIMITED_USE, // Kali
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0,
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0,
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0x1C00 | LIMITED_USE, // Lepc
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0,
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0x0840 | LIMITED_USE | RTL, // Mand
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0,
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0x10980 | EXCLUSION | RTL, // Mero
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0x07CA | LIMITED_USE | RTL, // Nkoo
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0x10C00 | EXCLUSION | RTL, // Orkh
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0,
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0xA840 | EXCLUSION, // Phag
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0x10900 | EXCLUSION | RTL, // Phnx
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0x16F00 | ASPIRATIONAL, // Plrd
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0,
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0,
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0,
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0,
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0,
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0,
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0xA549 | LIMITED_USE, // Vaii
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0,
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0x12000 | EXCLUSION, // Xsux
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0,
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0xFDD0 | UNKNOWN, // Zzzz
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0x102A0 | EXCLUSION, // Cari
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0x304B | RECOMMENDED | LB_LETTERS, // Jpan
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0x1A20 | LIMITED_USE | LB_LETTERS, // Lana
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0x10280 | EXCLUSION, // Lyci
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0x10920 | EXCLUSION | RTL, // Lydi
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0x1C5A | LIMITED_USE, // Olck
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0xA930 | EXCLUSION, // Rjng
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0xA882 | LIMITED_USE, // Saur
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0,
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0x1B83 | LIMITED_USE, // Sund
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0,
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0xABC0 | LIMITED_USE, // Mtei
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0x10840 | EXCLUSION | RTL, // Armi
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0x10B00 | EXCLUSION | RTL, // Avst
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0x11103 | LIMITED_USE, // Cakm
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0xAC00 | RECOMMENDED, // Kore
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0x11083 | EXCLUSION, // Kthi
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0,
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0x10B60 | EXCLUSION | RTL, // Phli
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0,
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0,
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0x10B40 | EXCLUSION | RTL, // Prti
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0x0800 | EXCLUSION | RTL, // Samr
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0xAA80 | LIMITED_USE | LB_LETTERS, // Tavt
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0,
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0,
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0xA6A0 | LIMITED_USE, // Bamu
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0xA4D0 | LIMITED_USE, // Lisu
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0,
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0x10A60 | EXCLUSION | RTL, // Sarb
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0,
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0,
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0,
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0,
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0,
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0,
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0,
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0x109A0 | EXCLUSION | RTL, // Merc
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0,
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0,
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0,
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0,
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0,
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0,
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0,
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0,
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0,
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0x11183 | EXCLUSION, // Shrd
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0x110D0 | EXCLUSION, // Sora
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0x11680 | EXCLUSION, // Takr
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0,
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0,
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0,
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0,
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0,
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// End copy-paste from parsescriptmetadata.py
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};
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int32_t getScriptProps(UScriptCode script) {
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if (0 <= script && script < LENGTHOF(SCRIPT_PROPS)) {
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return SCRIPT_PROPS[script];
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} else {
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return 0;
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}
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}
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} // namespace
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U_CAPI int32_t U_EXPORT2
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uscript_getSampleString(UScriptCode script, UChar *dest, int32_t capacity, UErrorCode *pErrorCode) {
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if(U_FAILURE(*pErrorCode)) { return 0; }
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if(capacity < 0 || (capacity > 0 && dest == NULL)) {
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*pErrorCode = U_ILLEGAL_ARGUMENT_ERROR;
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return 0;
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}
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int32_t sampleChar = getScriptProps(script) & 0x1fffff;
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int32_t length;
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if(sampleChar == 0) {
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length = 0;
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} else {
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length = U16_LENGTH(sampleChar);
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if(length <= capacity) {
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int32_t i = 0;
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U16_APPEND_UNSAFE(dest, i, sampleChar);
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}
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}
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return u_terminateUChars(dest, capacity, length, pErrorCode);
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}
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U_COMMON_API icu::UnicodeString U_EXPORT2
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uscript_getSampleUnicodeString(UScriptCode script) {
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icu::UnicodeString sample;
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int32_t sampleChar = getScriptProps(script) & 0x1fffff;
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if(sampleChar != 0) {
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sample.append(sampleChar);
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}
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return sample;
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}
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U_CAPI UScriptUsage U_EXPORT2
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uscript_getUsage(UScriptCode script) {
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return (UScriptUsage)((getScriptProps(script) >> 21) & 7);
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}
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U_CAPI UBool U_EXPORT2
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uscript_isRightToLeft(UScriptCode script) {
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return (getScriptProps(script) & RTL) != 0;
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}
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U_CAPI UBool U_EXPORT2
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uscript_breaksBetweenLetters(UScriptCode script) {
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return (getScriptProps(script) & LB_LETTERS) != 0;
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}
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U_CAPI UBool U_EXPORT2
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uscript_isCased(UScriptCode script) {
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return (getScriptProps(script) & CASED) != 0;
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}
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