source: downloads/tcl8.5.2/tools/uniClass.tcl @ 25

#!/bin/sh
# The next line is executed by /bin/sh, but not tcl \
exec tclsh "$0" ${1+"$@"}

#
# uniClass.tcl --
#
#       Generates the character ranges and singletons that are used in
#       generic/regc_locale.c for translation of character classes.
#       This file must be generated using a tclsh that contains the
#       correct corresponding tclUniData.c file (generated by uniParse.tcl)
#       in order for the class ranges to match.
#

proc emitRange {first last} {
    global ranges numranges chars numchars

    if {$first < ($last-1)} {
        append ranges [format "{0x%04x, 0x%04x}, " \
                $first $last]
        if {[incr numranges] % 4 == 0} {
            append ranges "\n    "
        }
    } else {
        append chars [format "0x%04x, " $first]
        incr numchars
        if {$numchars % 9 == 0} {
            append chars "\n    "
        }
        if {$first != $last} {
            append chars [format "0x%04x, " $last]
            incr numchars
            if {$numchars % 9 == 0} {
                append chars "\n    "
            }
        }
    }
}

proc genTable {type} {
    global first last ranges numranges chars numchars
    set first -2
    set last -2

    set ranges "    "
    set numranges 0
    set chars "    "
    set numchars 0

    for {set i 0} {$i <= 0xFFFF} {incr i} {
        if {[string is $type [format %c $i]]} {
            if {$i == ($last + 1)} {
                set last $i
            } else {
                if {$first > 0} {
                    emitRange $first $last
                }
                set first $i
                set last $i
            }
        }
    }
    emitRange $first $last

    set ranges [string trimright $ranges "\t\n ,"]
    set chars  [string trimright $chars "\t\n ,"]
    if {$ranges != ""} {
        puts "static crange ${type}RangeTable\[\] = {\n$ranges\n};\n"
        puts "#define NUM_[string toupper $type]_RANGE (sizeof(${type}RangeTable)/sizeof(crange))\n"
    } else {
        puts "/* no contiguous ranges of $type characters */\n"
    }
    if {$chars != ""} {
        puts "static chr ${type}CharTable\[\] = {\n$chars\n};\n"
        puts "#define NUM_[string toupper $type]_CHAR (sizeof(${type}CharTable)/sizeof(chr))\n"
    } else {
        puts "/* no singletons of $type characters */\n"
    }
}

puts "/*
 *      Declarations of Unicode character ranges.  This code
 *      is automatically generated by the tools/uniClass.tcl script
 *      and used in generic/regc_locale.c.  Do not modify by hand.
 */
"

foreach {type desc} {
    alpha "alphabetic characters"
    digit "decimal digit characters"
    punct "punctuation characters"
    space "white space characters"
    lower "lowercase characters"
    upper "uppercase characters"
    graph "unicode print characters excluding space"
} {
    puts "/* Unicode: $desc */\n"
    genTable $type
}

puts "/*
 *      End of auto-generated Unicode character ranges declarations.
 */"