Initial import

engine/greek_alphabet.py

@@ -0,0 +1,99 @@
+# vim:set et sts=4 sw=4:
+#
+# ibus-grc - The Input Bus polytonic Greek input method
+#
+# Copyright (c) 2011 David Baer <david.a.baer@gmail.com>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+alpha   = u"\u03b1"
+beta    = u"\u03b2"
+gamma   = u"\u03b3"
+delta   = u"\u03b4"
+epsilon = u"\u03b5"
+zeta    = u"\u03b6"
+eta     = u"\u03b7"
+theta   = u"\u03b8"
+iota    = u"\u03b9"
+kappa   = u"\u03ba"
+lambda_ = u"\u03bb"
+mu      = u"\u03bc"
+nu      = u"\u03bd"
+xi      = u"\u03be"
+omicron = u"\u03bf"
+pi      = u"\u03c0"
+rho     = u"\u03c1"
+sigma_final = u"\u03c2"
+sigma   = u"\u03c3"
+tau     = u"\u03c4"
+upsilon = u"\u03c5"
+phi     = u"\u03c6"
+chi     = u"\u03c7"
+psi     = u"\u03c8"
+omega   = u"\u03c9"
+
+Alpha   = u"\u0391"
+Beta    = u"\u0392"
+Gamma   = u"\u0393"
+Delta   = u"\u0394"
+Epsilon = u"\u0395"
+Zeta    = u"\u0396"
+Eta     = u"\u0397"
+Theta   = u"\u0398"
+Iota    = u"\u0399"
+Kappa   = u"\u039a"
+Lambda  = u"\u039b"
+Mu      = u"\u039c"
+Nu      = u"\u039d"
+Xi      = u"\u039e"
+Omicron = u"\u039f"
+Pi      = u"\u03a0"
+Rho     = u"\u03a1"
+Sigma   = u"\u03a3"
+Tau     = u"\u03a4"
+Upsilon = u"\u03a5"
+Phi     = u"\u03a6"
+Chi     = u"\u03a7"
+Psi     = u"\u03a8"
+Omega   = u"\u03a9"
+
+def isvowel(ch):
+    return ch == alpha or ch == Alpha or ch == epsilon or ch == Epsilon or \
+           ch == eta or ch == Eta or ch == iota or ch == Iota or \
+           ch == omicron or ch == Omicron or ch == upsilon or ch == Upsilon or \
+           ch == omega or ch == Omega
+
+def isconsonant(ch):
+    # note: because of tolower call, result is undefined for accented vowels
+    #       (it's best to strip the diacritics before calling this)
+    return tolower(ch) in [ beta, gamma, delta, zeta, theta, kappa, lambda_,
+                              mu, nu, xi, pi, rho, sigma, tau, phi, chi, psi,
+                              omega ]
+
+def tolower(word):
+    result = ""
+    for ch in word:
+        code = ord(ch)
+        if 0x0391 <= code <= 0x03a9:
+            result += unichr(code + 0x20)
+        else:
+            result += ch
+    return result
+
+def isdipthong(comb):
+    return tolower(comb) in [ alpha + iota, alpha + upsilon, epsilon + iota,
+                              epsilon + upsilon, epsilon + omega, eta + upsilon,
+                              omicron + iota, omicron + upsilon, upsilon + iota ]
+