[Not mine] Takes ASCII from stdin, shows it in fancy mathematical symbols

cursify

#!/usr/bin/env python
# vim: set fileencoding=UTF-8 :
#
# Copyright (c) 2010, Jonas Häggqvist <[email protected]>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice, this
#   list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright notice,
#   this list of conditions and the following disclaimer in the documentation
#   and/or other materials provided with the distribution.
# * Neither the name of the program nor the names of its contributors may be
#   used to endorse or promote products derived from this software without
#   specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.

import sys
import codecs
import locale

ALLRANGES = {
        'bold': {
            (65, 90)  : 0x1D400,
            (97, 122) : 0x1D41A,
            (48, 57)  : 0x1D7CE,      # Digits
            (0x391, 0x3A1) : 0x1D6A8, # ALPHA-RHO
            (0x3A3, 0x3A9) : 0x1D6BA, # SIGMA-OMEGA
            (0x3B1, 0x3C9) : 0x1D6C2, # alpha-omega
            },
        'italic': {
            (65, 90)  : 0x1D434,
            (97, 103) : 0x1D44E,      # a-g
            (104, 104): 0x210E,       # h
            (105, 122): 0x1D456,      # i-z
            (0x391, 0x3A1) : 0x1D6E2, # ALPHA-RHO
            (0x3A3, 0x3A9) : 0x1D6F4, # SIGMA-OMEGA
            (0x3B1, 0x3C9) : 0x1D6FC, # alpha-omega
            },
        'bolditalic': {
            (65, 90)  : 0x1D468,
            (97, 122) : 0x1D482,
            (0x391, 0x3A1) : 0x1D71C, # ALPHA-RHO
            (0x3A3, 0x3A9) : 0x1D72E, # SIGMA-OMEGA
            (0x3B1, 0x3C9) : 0x1D736, # alpha-omega
            },
        'script': {
            (65, 65) : 0x1D49C,       # A
            (66, 66) : 0x212C,        # B
            (67, 68) : 0x1D49E,       # C-D
            (69, 70) : 0x2130,        # E-F
            (71, 71) : 0x1D4A2,       # G
            (72, 72) : 0x210B,        # H
            (73, 73) : 0x2110,        # I
            (74, 75) : 0x1D4A5,       # J-K
            (76, 76) : 0x2112,        # L
            (77, 77) : 0x2133,        # M
            (78, 81) : 0x1D4A9,       # N-Q
            (82, 82) : 0x211B,        # R
            (83, 90) : 0x1D4AE,       # S-Z
            (97, 100) : 0x1D4B6,      # a-d
            (101, 101): 0x212F,       # e
            (102, 102): 0x1D4BB,      # f
            (103, 103): 0x210A,       # g
            (104, 110): 0x1D4BD,      # h-n
            (111, 111): 0x2134,       # o
            (112, 122): 0x1D4C5,      # p-z
            },
        'boldscript': {
            (65, 90)  : 0x1D4D0,
            (97, 122) : 0x1D4EA,
            },
        'fraktur': {
            (65, 66)  : 0x1D504,     # A-B
            (67, 67)  : 0x212D,      # C
            (68, 71)  : 0x1D507,     # D-G
            (72, 72)  : 0x210C,      # H
            (73, 73)  : 0x2111,      # I
            (74, 81)  : 0x1D50D,     # J-Q
            (82, 82)  : 0x211C,      # R
            (83, 89)  : 0x1D516,     # S-Y
            (90, 90)  : 0x2128,      # Z
            (97, 122) : 0x1D51E,
            },
        'boldfraktur': {
            (65, 90)  : 0x1D56C,
            (97, 122) : 0x1D586,
            },
        'doublestruck': {
            (65, 66)  : 0x1D538,     # A-B
            (67, 67)  : 0x2102,      # C
            (68, 71)  : 0x1D53B,     # D-G
            (72, 72)  : 0x210D,      # H
            (73, 77)  : 0x1D540,     # I-M
            (78, 78)  : 0x2115,      # N
            (79, 79)  : 0x1D546,     # O
            (80, 81)  : 0x2119,      # P-Q
            (82, 82)  : 0x211D,      # R
            (83, 89)  : 0x1D54A,     # S-Y
            (90, 90)  : 0x2124,      # Z
            (97, 122) : 0x1D552,
            (48, 57)  : 0x1D7D8,
            },
        'sans-serif': {
            (65, 90)  : 0x1D5A0,
            (97, 122) : 0x1D5BA,
            (48, 57)  : 0x1D7E2,      # Digits
            },
        'boldsans-serif': {
            (65, 90)  : 0x1D5D4,
            (97, 122) : 0x1D5EE,
            (48, 57)  : 0x1D7EC,      # Digits
            (0x391, 0x3A1) : 0x1D756, # ALPHA-RHO
            (0x3A3, 0x3A9) : 0x1D768, # SIGMA-OMEGA
            (0x3B1, 0x3C9) : 0x1D770, # alpha-omega
            },
        'italicsans-serif': {
            (65, 90)  : 0x1D608,
            (97, 122) : 0x1D622,
            },
        'bolditalicsans-serif': {
            (65, 90)  : 0x1D63C,
            (97, 122) : 0x1D656,
            (0x391, 0x3A1) : 0x1D790, # ALPHA-RHO
            (0x3A3, 0x3A9) : 0x1D7A2, # SIGMA-OMEGA
            (0x3B1, 0x3C9) : 0x1D7AA, # alpha-omega
            },
        'monospace': {
            (65, 90)  : 0x1D670,
            (97, 122) : 0x1D68A,
            (48, 57)  : 0x1D7F6,      # Digits
            },
        }

def cursifychar(c, ranges):
    n = ord(c)
    for (fromrange, torange) in ranges:
        dest = ranges[(fromrange, torange)]
        if n >= fromrange and n <= torange:
            return unichr(n + dest - fromrange)
    return c


def cursify(s, ranges):
    res = u""
    for c in s:
        res += cursifychar(c, ranges)
    return res

if __name__ == "__main__":
    sys.stdout = codecs.getwriter(locale.getpreferredencoding())(sys.stdout);
    sys.stdin = codecs.getreader(locale.getpreferredencoding())(sys.stdin);
    line = "x"
    if len(sys.argv) > 1 and sys.argv[1] in ALLRANGES:
        ranges = ALLRANGES[sys.argv[1]]
    else:
        ranges = ALLRANGES['script']
    while line != u"":
        line = sys.stdin.readline()
        line = cursify(line, ranges)
        sys.stdout.write(line)