From c244fba75805ccb0a8f5e4edec4c6057b3acd48c Mon Sep 17 00:00:00 2001
From: Lars-Dominik Braun <lars@6xq.net>
Date: Thu, 29 Sep 2016 17:56:36 +0200
Subject: Update character conversion map
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Should contain EUMEL’s entire charset now
---
 tools/eumel.py | 202 ++++++++++++++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 192 insertions(+), 10 deletions(-)

diff --git a/tools/eumel.py b/tools/eumel.py
index 0434b35..a421e0a 100644
--- a/tools/eumel.py
+++ b/tools/eumel.py
@@ -6,15 +6,196 @@ EUMEL utility functions, including:
 import logging
 import codecs
 
-# EUMEL character map. See “Benutzerhandbuch 1.7”, page 107.
-# map eumel character to unicode codepoint
-eumel2unicodemap = dict (
-    [(10, '\n'), (13, '\r')] +
-    # first part is same as ascii
-    [(i, chr (i)) for i in range (32, 126)] + 
-    [(126, '~')] +
-    [(214, 'Ä'), (215, 'Ö'), (216, 'Ü'), (217, 'ä'), (218, 'ö'), (219, 'ü'), (220, 'k'), (221, '-'), (222, '#'), (223, ' ')] +
-    [(251, 'ß')])
+# EUMEL character map. See “Benutzerhandbuch 1.7”, page 107 and file
+# ZEICHENSATZ from the archive disk std.graphik.
+eumel2unicodemap = dict ([
+    # standard newlines
+    (10, '\n'),
+    (13, '\r'),
+    # mark start. technically \15 and \14 would be a choice here, but they do
+    # different things on different systems and thus we’re just gonna strip
+    # them.
+    (15, ''),
+    (14, ''), # mark end
+    # same as ascii
+    (32, ' '),
+    (33, '!'),
+    (34, '"'),
+    (35, '#'),
+    (36, '$'),
+    (37, '%'),
+    (38, '&'),
+    (39, "'"),
+    (40, '('),
+    (41, ')'),
+    (42, '*'),
+    (43, '+'),
+    (44, ','),
+    (45, '-'),
+    (46, '.'),
+    (47, '/'),
+    (48, '0'),
+    (49, '1'),
+    (50, '2'),
+    (51, '3'),
+    (52, '4'),
+    (53, '5'),
+    (54, '6'),
+    (55, '7'),
+    (56, '8'),
+    (57, '9'),
+    (58, ':'),
+    (59, ';'),
+    (60, '<'),
+    (61, '='),
+    (62, '>'),
+    (63, '?'),
+    # then the paragraph symbol
+    (64, '§'),
+    # uppercase and lowercase letters from ascii
+    (65, 'A'),
+    (66, 'B'),
+    (67, 'C'),
+    (68, 'D'),
+    (69, 'E'),
+    (70, 'F'),
+    (71, 'G'),
+    (72, 'H'),
+    (73, 'I'),
+    (74, 'J'),
+    (75, 'K'),
+    (76, 'L'),
+    (77, 'M'),
+    (78, 'N'),
+    (79, 'O'),
+    (80, 'P'),
+    (81, 'Q'),
+    (82, 'R'),
+    (83, 'S'),
+    (84, 'T'),
+    (85, 'U'),
+    (86, 'V'),
+    (87, 'W'),
+    (88, 'X'),
+    (89, 'Y'),
+    (90, 'Z'),
+    (91, '['),
+    (92, '\\'),
+    (93, ']'),
+    (94, '^'),
+    (95, '_'),
+    (96, '`'),
+    (97, 'a'),
+    (98, 'b'),
+    (99, 'c'),
+    (100, 'd'),
+    (101, 'e'),
+    (102, 'f'),
+    (103, 'g'),
+    (104, 'h'),
+    (105, 'i'),
+    (106, 'j'),
+    (107, 'k'),
+    (108, 'l'),
+    (109, 'm'),
+    (110, 'n'),
+    (111, 'o'),
+    (112, 'p'),
+    (113, 'q'),
+    (114, 'r'),
+    (115, 's'),
+    (116, 't'),
+    (117, 'u'),
+    (118, 'v'),
+    (119, 'w'),
+    (120, 'x'),
+    (121, 'y'),
+    (122, 'z'),
+    (123, '{'),
+    (124, '|'),
+    (125, '}'),
+    (126, '~'),
+    # uppercase greek
+    (129, 'Α'),
+    (130, 'Β'),
+    (131, 'Γ'),
+    (132, 'Δ'),
+    (133, 'Ε'),
+    (134, 'Ζ'),
+    (135, 'Η'),
+    (136, 'Θ'),
+    (137, 'Ι'),
+    (138, 'Κ'),
+    (139, 'Λ'),
+    (140, 'Μ'),
+    (141, 'Ν'),
+    (142, 'Ξ'),
+    (143, 'Ο'),
+    (144, 'Π'),
+    (145, 'Ρ'),
+    (146, 'Σ'),
+    (147, 'Τ'),
+    (148, 'Υ'),
+    (149, 'Φ'),
+    (150, 'Χ'),
+    (151, 'Ψ'),
+    (152, 'Ω'),
+    # lowercase greek
+    (161, 'α'),
+    (162, 'β'),
+    (163, 'γ'),
+    (164, 'δ'),
+    (165, 'ε'),
+    (166, 'ζ'),
+    (167, 'η'),
+    (168, 'θ'),
+    (169, 'ι'),
+    (170, 'κ'),
+    (171, 'λ'),
+    (172, 'μ'),
+    (173, 'ν'),
+    (174, 'ξ'),
+    (175, 'ο'),
+    (176, 'π'),
+    (177, 'ρ'),
+    (178, 'ς'),
+    (179, 'σ'),
+    (180, 'τ'),
+    (181, 'υ'),
+    (182, 'φ'),
+    (183, 'χ'),
+    (184, 'ψ'),
+    (185, 'ω'),
+    # these seem to be combining diacritic, not sure how they work though
+    # 192 looks like a cross, dunno what it could be
+    (193, '\u0301'), # acute
+    (194, '\u0300'), # grave
+    (195, '\u0302'), # circumflex
+    (196, '\u0303'), # tilde
+    (197, '\u0304'), # macron
+    # 198: dunno
+    (199, '\u0307'), # dot above
+    (200, '\u0308'), # diaeresis
+    # 201: dunno
+    (202, '\u030a'), # ring above
+    (203, '\u0317'), # acute below
+    # 204: dunno
+    (205, '\u030a'), # ring above (again for small letters?)
+    # 206: dunno
+    (207, '\u030c'), # caron
+    # german umlauts
+    (214, 'Ä'),
+    (215, 'Ö'),
+    (216, 'Ü'),
+    (217, 'ä'),
+    (218, 'ö'),
+    (219, 'ü'),
+    (220, 'k'), # handbuch says: Trenn-'k' bei der Umwandlung von 'ck' in 'kk'
+    (221, '\u00ad'), # soft hyphen, inserted by eumel’s hyphenation program
+    (222, '\\#'), # printable hash (i.e. literal hash, not a printer/editor command)
+    (223, '\u00a0'), # protected space
+    (251, 'ß'),
+    ])
 
 def decode (input, errors='strict'):
     ret = []
@@ -22,7 +203,7 @@ def decode (input, errors='strict'):
     for pos in range (len (input)):
         c = input[pos]
         m = eumel2unicodemap.get (c, None)
-        if m:
+        if m is not None:
             ret.append (m)
         else:
             if errors == 'strict':
@@ -30,6 +211,7 @@ def decode (input, errors='strict'):
             elif errors == 'ignore':
                 pass
             elif errors == 'replace':
+                logging.debug ('replacing unknown symbol {} at position {}, context {}'.format (c, pos, input[pos-30:pos+30]))
                 ret.append ('\uFFFD')
             else:
                 break
-- 
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