scuffed-code/icu4c/source/data/brkitr/sent.txt

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#
# Copyright (C) 2002-2005, International Business Machines Corporation and others.
# All Rights Reserved.
#
# file: sent.txt
#
# ICU Sentence Break Rules
# See Unicode Standard Annex #29.
# These rules are based on TR 29 version 4.1.0
#
#
# Character categories as defined in TR 29
#
$Sep = [\p{Sentence_Break = Sep}];
$Format = [\p{Sentence_Break = Format}];
$Sp = [\p{Sentence_Break = Sp}];
$Lower = [\p{Sentence_Break = Lower}];
$Upper = [\p{Sentence_Break = Upper}];
$OLetter = [\p{Sentence_Break = OLetter}];
$Numeric = [\p{Sentence_Break = Numeric}];
$ATerm = [\p{Sentence_Break = ATerm}];
$STerm = [\p{Sentence_Break = STerm}];
$Close = [\p{Sentence_Break = Close}];
$Surrogate = [\p{GC=Surrogate}];
#
# Define extended forms of the character classes,
# incorporate grapheme cluster + format chars.
# Rules 4 and 5.
$CR = \u000d;
$LF = \u000a;
$Extend = [[:Grapheme_Extend = TRUE:]];
$Control = [\p{Grapheme_Cluster_Break = Control}];
$SpEx = ($Sp | ([[$Sp]-[$Control]] $Extend*)) $Format*;
$LowerEx = $Lower $Extend* $Format*;
$UpperEx = $Upper $Extend* $Format*;
$OLetterEx = $OLetter $Extend* $Format*;
$NumericEx = $Numeric $Extend* $Format*;
$ATermEx = $ATerm $Extend* $Format*;
$STermEx = $STerm $Extend* $Format*;
$CloseEx = $Close $Extend* $Format*;
## -------------------------------------------------
!!chain;
!!forward;
# Rule 3 - break after separators. Keep CR/LF together.
#
$CR $LF;
# Rule 4 - don't break grapheme clusters, including optional trailing format chars.
#
[^$Control $Sep] $Extend+ $Format*;
[^$Control $Sep] $Extend* $Format+;
# Rule 6
$ATermEx $NumericEx;
# Rule 7
$UpperEx $ATermEx $UpperEx;
#Rule 8
$NotLettersEx = ([^$OLetter $Upper $Lower $Sep $ATerm $STerm $Control] $Extend* $Format*) |
([^$OLetter $Upper $Lower $Sep $ATerm $STerm] $Format*);
$ATermEx $CloseEx* $SpEx* $NotLettersEx* $Lower;
#Rule 9, 10, 11
($STermEx | $ATermEx) $CloseEx* $SpEx* $Sep?;
#Rule 12
[[^$STerm $ATerm $Close $Sp $Sep $Format $Extend]{bof}] ($Extend | $Format | $Close | $Sp)* .;
[[^$STerm $ATerm $Close $Sp $Sep $Format $Extend]{bof}] ($Extend | $Format | $Close | $Sp)* ([$Sep{eof}] | $CR $LF){100};
## -------------------------------------------------
!!reverse;
$SpEx_R = $Format* ($Sp | ( $Extend+[[$Sp]-[$Control]]));
$LowerEx_R = $Format* $Extend* $Lower;
$UpperEx_R = $Format* $Extend* $Upper;
$OLetterEx_R = $Format* $Extend* $OLetter;
$NumericEx_R = $Format* $Extend* $Numeric;
$ATermEx_R = $Format* $Extend* $ATerm;
$STermEx_R = $Format* $Extend* $STerm;
$CloseEx_R = $Format* $Extend* $Close;
#
# Reverse rules.
# For now, use the old style inexact reverse rules, which are easier
# to write, but less efficient.
# TODO: exact reverse rules. It appears that exact reverse rules
# may require improving support for look-ahead breaks in the
# builder. Needs more investigation.
#
[{bof}] [^$Sep]* ($Sep | $LF $CR) [^$Sep]* [$Sep {eof}] ($SpEx_R* $CloseEx_R* ($STermEx_R | $ATermEx_R))?;