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|
routines (
prelude postlude
e_ending
en_ending
mark_regions
R1 R2
undouble
standard_suffix
)
externals ( stem )
booleans ( e_found )
integers ( p1 p2 )
groupings ( v v_I v_j )
stringescapes {}
/* special characters */
stringdef a" '{U+00E4}'
stringdef e" '{U+00EB}'
stringdef i" '{U+00EF}'
stringdef o" '{U+00F6}'
stringdef u" '{U+00FC}'
stringdef a' '{U+00E1}'
stringdef e' '{U+00E9}'
stringdef i' '{U+00ED}'
stringdef o' '{U+00F3}'
stringdef u' '{U+00FA}'
stringdef e` '{U+00E8}'
define v 'aeiouy{e`}'
define v_I v + 'I'
define v_j v + 'j'
define prelude as (
test repeat (
[substring] among(
'{a"}' '{a'}'
(<- 'a')
'{e"}' '{e'}'
(<- 'e')
'{i"}' '{i'}'
(<- 'i')
'{o"}' '{o'}'
(<- 'o')
'{u"}' '{u'}'
(<- 'u')
'' (next)
) //or next
)
try(['y'] <- 'Y')
repeat goto (
v [('i'] v <- 'I') or
('y'] <- 'Y')
)
)
define mark_regions as (
$p1 = limit
$p2 = limit
gopast v gopast non-v setmark p1
try($p1 < 3 $p1 = 3) // at least 3
gopast v gopast non-v setmark p2
)
define postlude as repeat (
[substring] among(
'Y' (<- 'y')
'I' (<- 'i')
'' (next)
) //or next
)
backwardmode (
define R1 as $p1 <= cursor
define R2 as $p2 <= cursor
define undouble as (
test among('kk' 'dd' 'tt') [next] delete
)
define e_ending as (
unset e_found
['e'] R1 test non-v delete
set e_found
undouble
)
define en_ending as (
R1 non-v and not 'gem' delete
undouble
)
define standard_suffix as (
do (
[substring] among(
'heden'
( R1 <- 'heid'
)
'en' 'ene'
( en_ending
)
's' 'se'
( R1 non-v_j delete
)
)
)
do e_ending
do ( ['heid'] R2 not 'c' delete
['en'] en_ending
)
do (
[substring] among(
'end' 'ing'
( R2 delete
(['ig'] R2 not 'e' delete) or undouble
)
'ig'
( R2 not 'e' delete
)
'lijk'
( R2 delete e_ending
)
'baar'
( R2 delete
)
'bar'
( R2 e_found delete
)
)
)
do (
non-v_I
test (
among ('aa' 'ee' 'oo' 'uu')
non-v
)
[next] delete
)
)
)
define stem as (
do prelude
do mark_regions
backwards
do standard_suffix
do postlude
)
|
