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#!/usr/bin/env tclsh
# Generate UTF-8 case mapping tables
#
# (c) 2010 Steve Bennett <steveb@workware.net.au>
#
# See LICENCE for licence details.
#/
# Parse the unicode data from: http://unicode.org/Public/UNIDATA/UnicodeData.txt
# to generate case mapping tables
set f [open [lindex $argv 0]]
set extoff 0
puts "static const struct casemap unicode_case_mapping\[\] = \{"
while {[gets $f buf] >= 0} {
foreach {code name class x x x x x x x x x upper lower} [split $buf ";"] break
set code 0x$code
if {$code <= 0x7f} {
continue
}
if {$code > 0xffff} {
break
}
if {$class ne "Lu" && $class ne "Ll"} {
continue
}
if {$upper eq ""} {
set upper $code
} else {
set upper 0x$upper
}
if {$lower eq ""} {
set lower $code
} else {
set lower 0x$lower
}
if {$upper == $code && $lower == $code} {
continue
}
set l [expr {$lower - $code}]
set u [expr {$upper - $code}]
if {abs($u) > 127 || abs($l) > 127} {
# Can't encode both in one byte, so use indirection
lappend jumptable $code $lower $upper
set l -128
set u $extoff
incr extoff
if {$extoff > 0xff} {
error "Too many entries in the offset table!"
}
}
set entry [string tolower "$code, $l, $u"]
puts " { $entry },"
}
close $f
puts "\};\n"
# Now the jump table
puts "static const struct caseextmap unicode_extmap\[\] = \{"
foreach {c l u} $jumptable {
puts " { $l, $u },"
}
puts "\};\n"
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