Doc: minor tweaks to tutorial text.

[lilypond.git] / scripts / abc2ly.py

diff --git a/scripts/abc2ly.py b/scripts/abc2ly.py
index f844b7dc13e2b84ab468d7718b1f418ff9a0844c..02ff95ba9341aae986daef18528595cf0b36b382 100644 (file)
--- a/scripts/abc2ly.py
+++ b/scripts/abc2ly.py
@@ -1,6 +1,23 @@
 #!@TARGET_PYTHON@
 # -*- coding: utf-8 -*-
+
 # once upon a rainy monday afternoon.
+
+#    This file is part of LilyPond, the GNU music typesetter.
+#
+#    LilyPond 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 3 of the License, or
+#    (at your option) any later version.
+#
+#    LilyPond 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 LilyPond.  If not, see <http://www.gnu.org/licenses/>.
+
 #
 #   ...
 #
@@ -255,19 +272,17 @@ def dump_voices (outf):
         outf.write ("\n}")
 
 def try_parse_q(a):
-    global midi_specs
-    #assume that Q takes the form "Q:1/4=120"
+    #assume that Q takes the form "Q:'opt. description' 1/4=120"
     #There are other possibilities, but they are deprecated
-    if a.count ('/') == 1:
-        array = a.split('/')
-        numerator=array[0]
-        if int(numerator) != 1:
-            sys.stderr.write("abc2ly: Warning, unable to translate a Q specification with a numerator of %s: %s\n" % (numerator, a))
-        array2 = array[1].split ('=')
-        denominator=array2[0]
-        perminute=array2[1]
-        duration = str (int (denominator) / int (numerator))
-        midi_specs = ' '.join(["\n\t\t\\context {\n\t\t \\Score tempoWholesPerMinute = #(ly:make-moment ", perminute, " ", duration, ")\n\t\t }\n"])
+    r = re.compile ('^(.*) *([0-9]+) */ *([0-9]+) *=* *([0-9]+)\s*')
+    m = r.match (a)
+    if m:
+        descr = m.group(1) # possibly empty
+        numerator = int(m.group (2))
+        denominator = int(m.group (3))
+        tempo = m.group (4)
+        dur = duration_to_lilypond_duration ((numerator,denominator), 1, 0)
+        voices_append ("\\tempo " + descr + " " + dur + "=" + tempo + "\n")
     else:
         sys.stderr.write("abc2ly: Warning, unable to parse Q specification: %s\n" % a)