--- /dev/null
+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+#
+# Original maps mostly drawn from
+# http://www.fileformat.info/convert/text/upside-down-map.htm
+# http://www.upsidedowntext.com/unicode
+
+"""Rotate ASCII text using unicode homographs.
+
+Most glaringly obvious in my terminal:
+ 25@BDKRUZ`jl
+
+Some of these choices were a result of my font setup. For example,
+ ᴚ LATIN LETTER SMALL CAPITAL TURNED R (U+1D1A)
+is clearly superior to
+ ʁ LATIN LETTER SMALL CAPITAL INVERTED R (U+0281)
+but it't not in my default font.
+"""
+
+__version__ = '0.1'
+
+import sys
+
+
+ROTATE_TABLE = { # Ordered by key's code point.
+ # ASCII keys
+
+ # Code points U+0000 through U+0020 are whitespace. Fall through.
+ u'!': u'¡', # EXCLAMATION MARK (U+0021), INVERTED EXCLAMATION MARK (U+00A1)
+ u'"': u'„', # QUOTATION MARK (U+0022), DOUBLE LOW-9 QUOTATION MARK (U+201E)
+ # # NUMBER SIGN (U+0023). Fall through.
+ # $ DOLLAR SIGN (U+0024). Fall through.
+ # % PERCENT SIGN (U+2005). Fall through.
+ u'&': u'⅋', # AMPERSAND (U+0026), TURNED AMPERSAND (U+214B)
+ u"'": u'‚', # APOSTROPHE (U+0027), SINGLE LOW-9 QUOTATION MARK (U+201A)
+ # Alternatives: , COMMA (U+002C)
+ u'(': u')', # LEFT PARENTHESIS (U+0028), RIGHT PARENTHESIS (U+0029)
+ # ) RIGHT PARENTHESIS (U+0029). Inverse of '(' -> ')'.
+ u'*': u'⁎', # ASTERIX (U+002A), LOW ASTERIX (U+204E)
+ # + PLUS SIGN (U+002B). Fall through.
+ u',': u'‘', # COMMA (U+002C), LEFT SINGLE QUOTATION MARK (U+2018)
+ # - HYPHEN-MINUS (U+2002D). Fall through.
+ u'.': u'˙', # FULL STOP (U+002E), DOT ABOVE (U+02D9)
+ # / SOLIDUS (U+002F). Fall through.
+ # 0 DIGIT ZERO (U+0030). Fall through.
+ u'1': u'⇂', # 1 DIGIT ONE (U+0031), DOWNWARDS HARPOON WITH BARB RIGHTWARDS (U+21C2)
+ # Alternatives: Ɩ LATIN CAPITAL LETTER IOTA (U+0196) HACK
+ u'2': u'Z', # DIGIT TWO (U+0032), Z LATIN CAPITAL LETTER Z (U+005A) HACK
+ # Alternatives: ჷ GEORGIAN LETTER YN (U+10F7)
+ u'3': u'Ɛ', # DIGIT THREE (U+0033), LATIN CAPITAL LETTER OPEN E (U+0190)
+ u'4': u'Ϟ', # DIGIT FOUR (U+0034), GREEK LETTER KOPPA (U+03DE) HACK
+ # Alternatives: ᔭ CANADIAN SYLLABICS YA (U+152D)
+ # ㄣ BOPOMOFO LETTER EN (U+3123)
+ # ߈ NKO DIGIT EIGHT (U+07C8)
+ u'5': u'ʢ', # 2 DIGIT TWO (U+2035), LATIN LETTER REVERSED GLOTTAL STOP WITH STROKE (U+02A2) HACK
+ # Alternatives: ϛ GREEK SMALL LETTER STIGMA (U+03DB)
+ u'6': u'9', # DIGIT SIX (U+0036), DIGIT NINE (U+0039)
+ u'7': u'Ł', # DIGIT SEVEN (U+0037), LATIN CAPITAL LETTER L WITH STROKE (U+0141)
+ # Alternatives: L LATIN CAPITAL LETTER L (U+004C)
+ # Ɫ LATIN CAPITAL LETTER L WITH MIDDLE TILDE (U+2C62)
+ # Ƚ LATIN CAPITAL LETTER L WITH BAR (U+023D)
+ # ㄥ BOPOMOFO LETTER ENG (U+3125)
+ # 8 DIGIT EIGHT (U+0038). Fall through.
+ # 9 DIGIT NINE (U+0039). Inverse of '6' -> '9'.
+ # : COLON (U+003A). Fall through.
+ u';': u'⁏', # SEMICOLON (U+003B), REVERSED SEMICOLON (U+204F) HACK
+ # Alternatives: ؛ ARABIC SEMICOLON (U+061B)
+ u'<': u'>', # LESS-THAN SIGN (U+003C), GREATER-THAN SIGN (U+003E)
+ # = EQUALS SIGN (U+003D). Fall through.
+ # > GREATER-THAN SIGN (U+003E). Inverse of '<' -> '>'.
+ u'?': u'¿', # QUESTION MARK (U+003F), INVERTED QUESTION MARK (U+00BF)
+ # @ COMMERCIAL AT (U+0040). Fall through.
+ # Alternatives: ᠗ MONGOLIAN DIGIT SEVEN (U+1817)
+ u'A': u'∀', # LATIN CAPITAL LETTER A (U+0041), FOR ALL (U+2200)
+ # Alternatives: Ɐ LATIN CAPITAL LETTER TURNED A (U+2C6F)
+ u'B': u'θ', # LATIN CAPITAL LETTER B (U+0042), GREEK SMALL LETTER THETA (U+03B8)
+ # Alternatives: 𐐒 DESERET CAPITAL LETTER BEE (U+10412)
+ # ৪ BENGALI DIGIT FOUR (U+09EA)
+ u'C': u'Ɔ', # LATIN CAPITAL LETTER C (U+0043), LATIN CAPITAL LETTER OPEN O (U+0186)
+ # Alternatives: Ↄ ROMAN NUMERAL REVERSED ONE HUNDRED (U+2183)
+ u'D': u'◖', # LATIN CAPITAL LETTER D (U+0044), LEFT HALF BLACK CIRCLE (U+25D6)
+ # Alternatives: ⫏ CLOSED SUBSET (U+2ACF)
+ # Ɑ LATIN CAPITAL LETTER ALPHA (U+2C6D)
+ u'E': u'Ǝ', # LATIN CAPITAL LETTER E (U+0045), LATIN CAPITAL LETTER REVERSED E (U+018E)
+ u'F': u'Ⅎ', # LATIN CAPITAL LETTER F (U+0046), TURNED CAPITAL F (U+2132)
+ u'G': u'⅁', # LATIN CAPITAL LETTER G (U+0047), TURNED SANS-SERIF CAPITAL G (U+2141)
+ # H LATIN CAPITAL LETTER H (U+0048). Fall through.
+ # I LATIN CAPITAL LETTER I (U+0049). Fall through.
+ u'J': u'ſ', # LATIN CAPITAL LETTER J (U+004A), LATIN SMALL LETTER LONG S (U+017F)
+ u'K': u'⋊', # LATIN CAPITAL LETTER K (U+004B), RIGHT NORMAL FACTOR SEMIDIRECT PRODUCT (U+22CA) HACK
+ # Alternatives: ⺦ CJK RADICAL SIMPLIFIED HALF TREE TRUNK (U+2EA6)
+ u'L': u'⅂', # LATIN CAPITAL LETTER L (U+004C), TURNED SANS-SERIF CAPITAL L (U+2142)
+ # Alternatives: Ꞁ LATIN CAPITAL LETTER TURNED L (U+A780)
+ u'M': u'W', # LATIN CAPITAL LETTER M (U+004D), LATIN CAPITAL LETTER W (U+0057)
+ # Alternatives: ꟽ LATIN EPIGRAPHIC LETTER INVERTED M (U+A7FD)
+ # Ɯ LATIN CAPITAL LETTER TURNED M (U+019C)
+ u'N': u'N', # LATIN CAPITAL LETTER N (U+004E), LATIN CAPITAL LETTER N (U+004E)
+ # Alternatives: ᴎ LATIN LETTER SMALL CAPITAL REVERSED N (U+1D0E)
+ u'O': u'O', # LATIN CAPITAL LETTER O (U+004F). Fall through.
+ u'P': u'Ԁ', # LATIN CAPITAL LETTER P (U+0050), CYRILLIC CAPITAL LETTER KOMI DE (U+0500)
+ u'Q': u'Ό', # LATIN CAPITAL LETTER Q (U+0051), GREEK CAPITAL LETTER OMICRON WITH TONOS (U+038C) HACK
+ u'R': u'ʁ', # LATIN CAPITAL LETTER R (U+0052), LATIN LETTER SMALL CAPITAL INVERTED R (U+0281) HACK:not rotated
+ # Alternatives: ᴚ LATIN LETTER SMALL CAPITAL TURNED R (U+1D1A)
+ u'S': u'S', # LATIN CAPITAL LETTER S (U+0053). Fall through.
+ u'T': u'⊥', # LATIN CAPITAL LETTER T (U+0054), UP TACK (U+22A5)
+ # Alternatives: ⟂ PERPENDICULAR (U+27C2)
+ u'U': u'∩', # LATIN CAPITAL LETTER U (U+0055), INTERSECTION (U+2229) HACK
+ u'V': u'Λ', # LATIN CAPITAL LETTER V (U+0056), GREEK CAPITAL LETTER LAMBDA (U+039B)
+ # Alternatives: Ʌ LATIN CAPITAL LETTER TURNED V (U+0245)
+ # W LATIN CAPITAL LETTER W (U+0057). Inverse of 'M' -> 'W'.
+ # X LATIN CAPITAL LETTER X (U+0058). Fall through.
+ u'Y': u'⅄', # LATIN CAPITAL LETTER Y (U+0059), TURNED SANS-SERIF CAPITAL Y (U+2144)
+ # Z LATIN CAPITAL LETTER Z (U+005A). Fall through.
+ u'[': u']', # LEFT SQUARE BRACKET (U+005B), RIGHT SQUARE BRACKET (U+005D)
+ # \ REVERSE SOLIDUS (U+005C). Fall through.
+ # ] RIGHT SQUARE BRACKET (U+005D). Inverse of '[' -> ']'
+ u'^': u'⌵', # CIRCUMFLEX ACCENT (U+005E), COUNTERSINK (U+2335)
+ u'_': u'‾', # LOW LINE (U+005F), OVERLINE (U+203E)
+ u'`': u'․', # GRAVE ACCENT (U+0060), ONE DOT LEADER (U+2024) HACK
+ # Alternatives: , COMMA (U+002C)
+ # ، ARABIC COMMA (U+060C)
+ u'a': u'ɐ', # LATIN SMALL LETTER A (U+0061), LATIN SMALL LETTER TURNED A (U+0250)
+ u'b': u'q', # LATIN SMALL LETTER B (U+0062), LATIN SMALL LETTER Q (U+0071)
+ u'c': u'ɔ', # LATIN SMALL LETTER C (U+0063), LATIN SMALL LETTER OPEN O (U+0254)
+ u'd': u'p', # LATIN SMALL LETTER D (U+0064), LATIN SMALL LETTER P (U+0070)
+ u'e': u'ǝ', # LATIN SMALL LETTER E (U+0065), LATIN SMALL LETTER TURNED E (U+01DD)
+ u'f': u'ɟ', # LATIN SMALL LETTER F (U+0066), LATIN SMALL LETTER DOTLESS J WITH STROKE (U+025F)
+ u'g': u'ƃ', # LATIN SMALL LETTER G (U+0067), LATIN SMALL LETTER B WITH TOPBAR (U+0183)
+ # Alternatives: ᵷ LATIN SMALL LETTER TURNED G (U+1D77)
+ u'h': u'ɥ', # LATIN SMALL LETTER H (U+0068), LATIN SMALL LETTER TURNED H (U+0265)
+ u'i': u'ı', # LATIN SMALL LETTER I (U+0069), LATIN SMALL LETTER DOTLESS I (U+0131)
+ u'j': u'ɾ', # LATIN SMALL LETTER J (U+006A), LATIN SMALL LETTER R WITH FISHHOOK (U+027E)
+ u'k': u'ʞ', # LATIN SMALL LETTER K (U+006B), LATIN SMALL LETTER TURNED K (U+029E)
+ # l LATIN SMALL LETTER L (U+006C). Fall through.
+ # Alternatives: ʃ LATIN SMALL LETTER ESH (U+0283)
+ # ן HEBREW LETTER FINAL NUN (U+05DF, right to left)
+ u'm': u'ɯ', # LATIN SMALL LETTER M (U+006D), LATIN SMALL LETTER TURNED M (U+026F)
+ u'n': u'u', # LATIN SMALL LETTER N (U+006E), LATIN SMALL LETTER U (U+0075)
+ # Alternatives: и CYRILLIC SMALL LETTER I (U+0438)
+ # o LATIN SMALL LETTER Z (U+006F). Fall through.
+ # p LATIN SMALL LETTER P (U+0070). Inverse of 'd' -> 'p'.
+ # q LATIN SMALL LETTER Q (U+0071). Inverse of 'b' -> 'q'.
+ u'r': u'ɹ', # LATIN SMALL LETTER R (U+0072), LATIN SMALL LETTER TURNED R (U+0279)
+ # s LATIN SMALL LETTER S (U+0073). Fall through.
+ u't': u'ʇ', # LATIN SMALL LETTER T (U+0074), LATIN SMALL LETTER TURNED T (U+0287)
+ # u LATIN SMALL LETTER U (U+0075). Inverse of 'n' -> 'u'.
+ u'v': u'ʌ', # LATIN SMALL LETTER V (U+0076), LATIN SMALL LETTER TURNED V (U+028C)
+ u'w': u'ʍ', # LATIN SMALL LETTER W (U+0077), LATIN SMALL LETTER TURNED W (U+028D)
+ # x LATIN SMALL LETTER X (U+0078). Fall through.
+ u'y': u'ʎ', # LATIN SMALL LETTER Y (U+0079), LATIN SMALL LETTER TURNED Y (U+028E)
+ # z LATIN SMALL LETTER Z (U+007A). Fall through.
+ u'{': u'}', # LEFT CURLY BRACKET (U+007B), RIGHT CURLY BRACKET (U+007D)
+ # | VERTICAL LINE (U+007C). Fall through.
+ # } RIGHT CURLY BRACKET (U+007B). Inverse of '{' -> '}'.
+ # ~ TILDE (U+007E). Fall through.
+ # Code point U+007F (NULL) is whitespace. Fall through.
+ }
+
+INVERSE_ROTATE_TABLE = dict([[v,k] for k,v in ROTATE_TABLE.items()])
+
+def rotate(c):
+ return ROTATE_TABLE.get(c, INVERSE_ROTATE_TABLE.get(c, c))
+
+def write_in_rows(values, stream, encoding):
+ M = max([len(v) for v in values])
+ m = min([len(v) for v in values])
+ assert M == m, 'string lengths range from %d to %d' % (m, M)
+ columns = 80 / (2+m) # integer division rounds down
+ row = 0
+ for i,v in enumerate(values):
+ if row == columns:
+ stream.write('\n')
+ row = 0
+ elif i != 0:
+ stream.write(' ')
+ row += 1
+ stream.write(v.encode(encoding))
+ stream.write('\n')
+
+def test(stream=sys.stdout, encoding='utf-8'):
+ format = u'%2x %s %s'
+ stream.write('Printable rotations:\n')
+ write_in_rows(
+ values=[format % (i, chr(i), rotate(chr(i))) for i in range(33, 127)],
+ stream=stream, encoding=encoding)
+ collisions = [format % (i, chr(i), rotate(chr(i))) for i in range(0, 128)
+ if chr(i) != rotate(rotate(chr(i)))]
+ if len(collisions) > 0:
+ stream.write('Collisions:\n')
+ write_in_rows(values=collisions, stream=stream, encoding=encoding)
+
+
+if __name__ == '__main__':
+ if len(sys.argv) > 1: # print all the ascii chars and their inverse
+ encoding = sys.argv[1]
+ try:
+ u''.encode(encoding)
+ except LookupError:
+ encoding = 'utf-8' # default to utf-8
+ test(encoding=encoding)
+ sys.exit(0)
+ print ''.join([rotate(c) for c in reversed(sys.stdin.read().strip())])
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