From adc06ec6e6e32fafe4e0689bd8a5e9d31000012e Mon Sep 17 00:00:00 2001
From: Philipp Gesang <pgesang@ix.urz.uni-heidelberg.de>
Date: Tue, 10 May 2011 11:30:45 +0200
Subject: serbian transliteration tables & functions

---
 .../third/transliterator/trans_tables_sr.lua       | 116 +++++++++++++++++++++
 .../third/transliterator/transliterator.lua        |  11 +-
 2 files changed, 122 insertions(+), 5 deletions(-)
 create mode 100644 tex/context/third/transliterator/trans_tables_sr.lua

diff --git a/tex/context/third/transliterator/trans_tables_sr.lua b/tex/context/third/transliterator/trans_tables_sr.lua
new file mode 100644
index 0000000..9abe5b2
--- /dev/null
+++ b/tex/context/third/transliterator/trans_tables_sr.lua
@@ -0,0 +1,116 @@
+
+--===========================================================================--
+--                               Serbian                                     --
+--===========================================================================--
+
+
+if not translit.done_serbian then
+    --------------------------------------------
+    -- Lowercase Serbian (Cyrillic -> Latin)  --
+    --------------------------------------------
+    translit.sr_tolt_lower = translit.make_add_dict{
+        ["А"] = "A",
+        ["Б"] = "B",
+        ["В"] = "V",
+        ["Г"] = "G",
+        ["Д"] = "D",
+        ["Ђ"] = "Đ",
+        ["Е"] = "E",
+        ["Ж"] = "Ž",
+        ["З"] = "Z",
+        ["И"] = "I",
+        ["Ј"] = "J",
+        ["К"] = "K",
+        ["Л"] = "L",
+        ["Љ"] = "Lj",
+        ["М"] = "M",
+        ["Н"] = "N",
+        ["Њ"] = "Nj",
+        ["О"] = "O",
+        ["П"] = "P",
+        ["Р"] = "R",
+        ["С"] = "S",
+        ["Т"] = "T",
+        ["Ћ"] = "Ć",
+        ["У"] = "U",
+        ["Ф"] = "F",
+        ["Х"] = "H",
+        ["Ц"] = "C",
+        ["Ч"] = "Č",
+        ["Џ"] = "Dž",
+        ["Ш"] = "Š",
+    }
+
+    translit.tables["Serbian Cyr->Lat Transliteration lowercase"] = translit.sr_tolt_lower
+
+    --------------------------------------------
+    -- Uppercase Serbian (Cyrillic -> Latin)  --
+    --------------------------------------------
+
+    translit.sr_tolt_upper = translit.make_add_dict{
+        ["а"] = "a",
+        ["б"] = "b",
+        ["в"] = "v",
+        ["г"] = "g",
+        ["д"] = "d",
+        ["ђ"] = "đ",
+        ["е"] = "e",
+        ["ж"] = "ž",
+        ["з"] = "z",
+        ["и"] = "i",
+        ["ј"] = "j",
+        ["к"] = "k",
+        ["л"] = "l",
+        ["љ"] = "lj",
+        ["м"] = "m",
+        ["н"] = "n",
+        ["њ"] = "nj",
+        ["о"] = "o",
+        ["п"] = "p",
+        ["р"] = "r",
+        ["с"] = "s",
+        ["т"] = "t",
+        ["ћ"] = "ć",
+        ["у"] = "u",
+        ["ф"] = "f",
+        ["х"] = "h",
+        ["ц"] = "c",
+        ["ч"] = "č",
+        ["џ"] = "dž",
+        ["ш"] = "š",
+    }
+
+    translit.tables["Serbian Cyr->Lat Transliteration uppercase"] = translit.sr_tolt_upper
+
+    local function __inverse_tab (t)
+        local result = { }
+        for k,v in next,t do result[v] = k end
+        return result
+    end
+
+    translit.sr_tocy_lower = translit.make_add_dict(__inverse_tab(translit.sr_tolt_lower))
+    translit.sr_tocy_upper = translit.make_add_dict(__inverse_tab(translit.sr_tolt_upper))
+
+    translit.done_serbian = true
+end
+
+--===========================================================================--
+--                              End Of Tables                                --
+--===========================================================================--
+
+local t = translit
+local function sr (mode, text)
+    local P, R, S, V, Cs = lpeg.P, lpeg.R, lpeg.S, lpeg.V, lpeg.Cs
+    local utfchar  = translit.utfchar
+    local trl_sr   = translit.make_add_dict{}
+
+    trl_sr = t[mode.."_upper"] + t[mode.."_lower"]
+
+    local _p_sr = translit.addrules (trl_sr, _p_sr)
+    local p_sr  = Cs((_p_sr / trl_sr + utfchar)^0)
+
+    return p_sr:match(text)
+end
+
+translit.methods ["sr_tolt"] = function (text) return sr( "sr_tolt", text ) end
+translit.methods ["sr_tocy"] = function (text) return sr( "sr_tocy", text ) end
diff --git a/tex/context/third/transliterator/transliterator.lua b/tex/context/third/transliterator/transliterator.lua
index ddda144..d794c05 100644
--- a/tex/context/third/transliterator/transliterator.lua
+++ b/tex/context/third/transliterator/transliterator.lua
@@ -83,7 +83,8 @@ end
 
 -- Generate a rule pattern from hash table.
 do
-    local P = lpeg.P
+    local P, R, V = lpeg.P, lpeg.R, lpeg.V
+
     function translit.addrules (dict, rules)
         for i, _ in pairs(dict) do
             if rules == nil then rules = P(i)
@@ -92,12 +93,9 @@ do
         end
         return rules
     end
-end
 
 -- Modified version of Hans’s utf pattern (l-lpeg.lua).
 
-do
-    local P, R, V = lpeg.P, lpeg.R, lpeg.V
 
     translit.utfchar = P{
         V"utf8one" + V"utf8two" + V"utf8three" + V"utf8four",
@@ -194,6 +192,7 @@ function translit.show_all_tabs ()
     environment.loadluafile ("trans_tables_iso9")
     environment.loadluafile ("trans_tables_trsc")
     environment.loadluafile ("trans_tables_scntfc")
+    environment.loadluafile ("trans_tables_sr")
     environment.loadluafile ("trans_tables_trsc")
     environment.loadluafile ("trans_tables_glag")
     environment.loadluafile ("trans_tables_gr")
@@ -227,7 +226,7 @@ end
 -- corresponding function.
 
 -- Those supposedly are the most frequently used so it won’t hurt to preload
--- them.
+-- them.  The rest will be loaded on request.
 environment.loadluafile ("trans_tables_iso9")
 
 function translit.transliterate (method, text)
@@ -245,6 +244,8 @@ function translit.transliterate (method, text)
                 method == "ocs"           or
                 method == "ocs_gla"       then
             environment.loadluafile ("trans_tables_scntfc")
+        elseif  method:match("^sr_") then
+            environment.loadluafile ("trans_tables_sr")
         elseif  method == "gr"   or
                 method == "gr_n" then
             environment.loadluafile ("trans_tables_gr")
-- 
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