This file is indexed.

/usr/bin/musicxml2ly is in lilypond 2.14.2-2.

This file is owned by root:root, with mode 0o755.

The actual contents of the file can be viewed below.

   1
   2
   3
   4
   5
   6
   7
   8
   9
  10
  11
  12
  13
  14
  15
  16
  17
  18
  19
  20
  21
  22
  23
  24
  25
  26
  27
  28
  29
  30
  31
  32
  33
  34
  35
  36
  37
  38
  39
  40
  41
  42
  43
  44
  45
  46
  47
  48
  49
  50
  51
  52
  53
  54
  55
  56
  57
  58
  59
  60
  61
  62
  63
  64
  65
  66
  67
  68
  69
  70
  71
  72
  73
  74
  75
  76
  77
  78
  79
  80
  81
  82
  83
  84
  85
  86
  87
  88
  89
  90
  91
  92
  93
  94
  95
  96
  97
  98
  99
 100
 101
 102
 103
 104
 105
 106
 107
 108
 109
 110
 111
 112
 113
 114
 115
 116
 117
 118
 119
 120
 121
 122
 123
 124
 125
 126
 127
 128
 129
 130
 131
 132
 133
 134
 135
 136
 137
 138
 139
 140
 141
 142
 143
 144
 145
 146
 147
 148
 149
 150
 151
 152
 153
 154
 155
 156
 157
 158
 159
 160
 161
 162
 163
 164
 165
 166
 167
 168
 169
 170
 171
 172
 173
 174
 175
 176
 177
 178
 179
 180
 181
 182
 183
 184
 185
 186
 187
 188
 189
 190
 191
 192
 193
 194
 195
 196
 197
 198
 199
 200
 201
 202
 203
 204
 205
 206
 207
 208
 209
 210
 211
 212
 213
 214
 215
 216
 217
 218
 219
 220
 221
 222
 223
 224
 225
 226
 227
 228
 229
 230
 231
 232
 233
 234
 235
 236
 237
 238
 239
 240
 241
 242
 243
 244
 245
 246
 247
 248
 249
 250
 251
 252
 253
 254
 255
 256
 257
 258
 259
 260
 261
 262
 263
 264
 265
 266
 267
 268
 269
 270
 271
 272
 273
 274
 275
 276
 277
 278
 279
 280
 281
 282
 283
 284
 285
 286
 287
 288
 289
 290
 291
 292
 293
 294
 295
 296
 297
 298
 299
 300
 301
 302
 303
 304
 305
 306
 307
 308
 309
 310
 311
 312
 313
 314
 315
 316
 317
 318
 319
 320
 321
 322
 323
 324
 325
 326
 327
 328
 329
 330
 331
 332
 333
 334
 335
 336
 337
 338
 339
 340
 341
 342
 343
 344
 345
 346
 347
 348
 349
 350
 351
 352
 353
 354
 355
 356
 357
 358
 359
 360
 361
 362
 363
 364
 365
 366
 367
 368
 369
 370
 371
 372
 373
 374
 375
 376
 377
 378
 379
 380
 381
 382
 383
 384
 385
 386
 387
 388
 389
 390
 391
 392
 393
 394
 395
 396
 397
 398
 399
 400
 401
 402
 403
 404
 405
 406
 407
 408
 409
 410
 411
 412
 413
 414
 415
 416
 417
 418
 419
 420
 421
 422
 423
 424
 425
 426
 427
 428
 429
 430
 431
 432
 433
 434
 435
 436
 437
 438
 439
 440
 441
 442
 443
 444
 445
 446
 447
 448
 449
 450
 451
 452
 453
 454
 455
 456
 457
 458
 459
 460
 461
 462
 463
 464
 465
 466
 467
 468
 469
 470
 471
 472
 473
 474
 475
 476
 477
 478
 479
 480
 481
 482
 483
 484
 485
 486
 487
 488
 489
 490
 491
 492
 493
 494
 495
 496
 497
 498
 499
 500
 501
 502
 503
 504
 505
 506
 507
 508
 509
 510
 511
 512
 513
 514
 515
 516
 517
 518
 519
 520
 521
 522
 523
 524
 525
 526
 527
 528
 529
 530
 531
 532
 533
 534
 535
 536
 537
 538
 539
 540
 541
 542
 543
 544
 545
 546
 547
 548
 549
 550
 551
 552
 553
 554
 555
 556
 557
 558
 559
 560
 561
 562
 563
 564
 565
 566
 567
 568
 569
 570
 571
 572
 573
 574
 575
 576
 577
 578
 579
 580
 581
 582
 583
 584
 585
 586
 587
 588
 589
 590
 591
 592
 593
 594
 595
 596
 597
 598
 599
 600
 601
 602
 603
 604
 605
 606
 607
 608
 609
 610
 611
 612
 613
 614
 615
 616
 617
 618
 619
 620
 621
 622
 623
 624
 625
 626
 627
 628
 629
 630
 631
 632
 633
 634
 635
 636
 637
 638
 639
 640
 641
 642
 643
 644
 645
 646
 647
 648
 649
 650
 651
 652
 653
 654
 655
 656
 657
 658
 659
 660
 661
 662
 663
 664
 665
 666
 667
 668
 669
 670
 671
 672
 673
 674
 675
 676
 677
 678
 679
 680
 681
 682
 683
 684
 685
 686
 687
 688
 689
 690
 691
 692
 693
 694
 695
 696
 697
 698
 699
 700
 701
 702
 703
 704
 705
 706
 707
 708
 709
 710
 711
 712
 713
 714
 715
 716
 717
 718
 719
 720
 721
 722
 723
 724
 725
 726
 727
 728
 729
 730
 731
 732
 733
 734
 735
 736
 737
 738
 739
 740
 741
 742
 743
 744
 745
 746
 747
 748
 749
 750
 751
 752
 753
 754
 755
 756
 757
 758
 759
 760
 761
 762
 763
 764
 765
 766
 767
 768
 769
 770
 771
 772
 773
 774
 775
 776
 777
 778
 779
 780
 781
 782
 783
 784
 785
 786
 787
 788
 789
 790
 791
 792
 793
 794
 795
 796
 797
 798
 799
 800
 801
 802
 803
 804
 805
 806
 807
 808
 809
 810
 811
 812
 813
 814
 815
 816
 817
 818
 819
 820
 821
 822
 823
 824
 825
 826
 827
 828
 829
 830
 831
 832
 833
 834
 835
 836
 837
 838
 839
 840
 841
 842
 843
 844
 845
 846
 847
 848
 849
 850
 851
 852
 853
 854
 855
 856
 857
 858
 859
 860
 861
 862
 863
 864
 865
 866
 867
 868
 869
 870
 871
 872
 873
 874
 875
 876
 877
 878
 879
 880
 881
 882
 883
 884
 885
 886
 887
 888
 889
 890
 891
 892
 893
 894
 895
 896
 897
 898
 899
 900
 901
 902
 903
 904
 905
 906
 907
 908
 909
 910
 911
 912
 913
 914
 915
 916
 917
 918
 919
 920
 921
 922
 923
 924
 925
 926
 927
 928
 929
 930
 931
 932
 933
 934
 935
 936
 937
 938
 939
 940
 941
 942
 943
 944
 945
 946
 947
 948
 949
 950
 951
 952
 953
 954
 955
 956
 957
 958
 959
 960
 961
 962
 963
 964
 965
 966
 967
 968
 969
 970
 971
 972
 973
 974
 975
 976
 977
 978
 979
 980
 981
 982
 983
 984
 985
 986
 987
 988
 989
 990
 991
 992
 993
 994
 995
 996
 997
 998
 999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945
2946
2947
#!/usr/bin/python
# -*- coding: utf-8 -*-
import optparse
import sys
import re
import os
import string
import codecs
import zipfile
import StringIO

"""

This generic code used for all python scripts.

The quotes are to ensure that the source .py file can still be
run as a python script, but does not include any sys.path handling.
Otherwise, the lilypond-book calls inside the build
might modify installed .pyc files.

"""

for d in ['/usr/share/lilypond/2.14.2',
	  '/usr/lib/lilypond/2.14.2']:
    sys.path.insert (0, os.path.join (d, 'python'))

# dynamic relocation, for GUB binaries.
bindir = os.path.abspath (os.path.dirname (sys.argv[0]))
for p in ['share', 'lib']:
    datadir = os.path.abspath (bindir + '/../%s/lilypond/current/python/' % p)
    sys.path.insert (0, datadir)
"""
"""

import lilylib as ly
_ = ly._

import musicxml
import musicexp

from rational import Rational

# Store command-line options in a global variable, so we can access them everythwere
options = None

class Conversion_Settings:
    def __init__(self):
       self.ignore_beaming = False

conversion_settings = Conversion_Settings ()
# Use a global variable to store the setting needed inside a \layout block.
# whenever we need to change a setting or add/remove an engraver, we can access
# this layout and add the corresponding settings
layout_information = musicexp.Layout ()

def progress (str):
    ly.stderr_write (str + '\n')
    sys.stderr.flush ()

def error_message (str):
    ly.stderr_write (str + '\n')
    sys.stderr.flush ()

needed_additional_definitions = []
additional_definitions = {

  "tuplet-note-wrapper": """      % a formatter function, which is simply a wrapper around an existing
      % tuplet formatter function. It takes the value returned by the given
      % function and appends a note of given length.
  #(define-public ((tuplet-number::append-note-wrapper function note) grob)
    (let* ((txt (if function (function grob) #f)))
      (if txt
        (markup txt #:fontsize -5 #:note note UP)
        (markup #:fontsize -5 #:note note UP)
      )
    )
  )""",

  "tuplet-non-default-denominator": """#(define ((tuplet-number::non-default-tuplet-denominator-text denominator) grob)
  (number->string (if denominator
                      denominator
                      (ly:event-property (event-cause grob) 'denominator))))
""",

  "tuplet-non-default-fraction": """#(define ((tuplet-number::non-default-tuplet-fraction-text denominator numerator) grob)
    (let* ((ev (event-cause grob))
           (den (if denominator denominator (ly:event-property ev 'denominator)))
           (num (if numerator numerator (ly:event-property ev 'numerator))))
       (format "~a:~a" den num)))
""",
}

def round_to_two_digits (val):
    return round (val * 100) / 100

def extract_paper_information (tree):
    paper = musicexp.Paper ()
    defaults = tree.get_maybe_exist_named_child ('defaults')
    if not defaults:
        return None
    tenths = -1
    scaling = defaults.get_maybe_exist_named_child ('scaling')
    if scaling:
        mm = scaling.get_named_child ('millimeters')
        mm = string.atof (mm.get_text ())
        tn = scaling.get_maybe_exist_named_child ('tenths')
        tn = string.atof (tn.get_text ())
        tenths = mm / tn
        paper.global_staff_size = mm * 72.27 / 25.4
    # We need the scaling (i.e. the size of staff tenths for everything!
    if tenths < 0:
        return None

    def from_tenths (txt):
        return round_to_two_digits (string.atof (txt) * tenths / 10)
    def set_paper_variable (varname, parent, element_name):
        el = parent.get_maybe_exist_named_child (element_name)
        if el: # Convert to cm from tenths
            setattr (paper, varname, from_tenths (el.get_text ()))

    pagelayout = defaults.get_maybe_exist_named_child ('page-layout')
    if pagelayout:
        # TODO: How can one have different margins for even and odd pages???
        set_paper_variable ("page_height", pagelayout, 'page-height')
        set_paper_variable ("page_width", pagelayout, 'page-width')

        pmargins = pagelayout.get_named_children ('page-margins')
        for pm in pmargins:
            set_paper_variable ("left_margin", pm, 'left-margin')
            set_paper_variable ("right_margin", pm, 'right-margin')
            set_paper_variable ("bottom_margin", pm, 'bottom-margin')
            set_paper_variable ("top_margin", pm, 'top-margin')

    systemlayout = defaults.get_maybe_exist_named_child ('system-layout')
    if systemlayout:
        sl = systemlayout.get_maybe_exist_named_child ('system-margins')
        if sl:
            set_paper_variable ("system_left_margin", sl, 'left-margin')
            set_paper_variable ("system_right_margin", sl, 'right-margin')
        set_paper_variable ("system_distance", systemlayout, 'system-distance')
        set_paper_variable ("top_system_distance", systemlayout, 'top-system-distance')

    stafflayout = defaults.get_named_children ('staff-layout')
    for sl in stafflayout:
        nr = getattr (sl, 'number', 1)
        dist = sl.get_named_child ('staff-distance')
        #TODO: the staff distance needs to be set in the Staff context!!!

    # TODO: Finish appearance?, music-font?, word-font?, lyric-font*, lyric-language*
    appearance = defaults.get_named_child ('appearance')
    if appearance:
        lws = appearance.get_named_children ('line-width')
        for lw in lws:
            # Possible types are: beam, bracket, dashes,
            #    enclosure, ending, extend, heavy barline, leger,
            #    light barline, octave shift, pedal, slur middle, slur tip,
            #    staff, stem, tie middle, tie tip, tuplet bracket, and wedge
            tp = lw.type
            w = from_tenths (lw.get_text  ())
            # TODO: Do something with these values!
        nss = appearance.get_named_children ('note-size')
        for ns in nss:
            # Possible types are: cue, grace and large
            tp = ns.type
            sz = from_tenths (ns.get_text ())
            # TODO: Do something with these values!
        # <other-appearance> elements have no specified meaning

    rawmusicfont = defaults.get_named_child ('music-font')
    if rawmusicfont:
        # TODO: Convert the font
        pass
    rawwordfont = defaults.get_named_child ('word-font')
    if rawwordfont:
        # TODO: Convert the font
        pass
    rawlyricsfonts = defaults.get_named_children ('lyric-font')
    for lyricsfont in rawlyricsfonts:
        # TODO: Convert the font
        pass

    return paper



# score information is contained in the <work>, <identification> or <movement-title> tags
# extract those into a hash, indexed by proper lilypond header attributes
def extract_score_information (tree):
    header = musicexp.Header ()
    def set_if_exists (field, value):
        if value:
            header.set_field (field, musicxml.escape_ly_output_string (value))

    movement_title = tree.get_maybe_exist_named_child ('movement-title')
    if movement_title:
        set_if_exists ('title', movement_title.get_text ())
    work = tree.get_maybe_exist_named_child ('work')
    if work:
        # Overwrite the title from movement-title with work->title
        set_if_exists ('title', work.get_work_title ())
        set_if_exists ('worknumber', work.get_work_number ())
        set_if_exists ('opus', work.get_opus ())

    identifications = tree.get_named_children ('identification')
    for ids in identifications:
        set_if_exists ('copyright', ids.get_rights ())
        set_if_exists ('composer', ids.get_composer ())
        set_if_exists ('arranger', ids.get_arranger ())
        set_if_exists ('editor', ids.get_editor ())
        set_if_exists ('poet', ids.get_poet ())

        set_if_exists ('tagline', ids.get_encoding_software ())
        set_if_exists ('encodingsoftware', ids.get_encoding_software ())
        set_if_exists ('encodingdate', ids.get_encoding_date ())
        set_if_exists ('encoder', ids.get_encoding_person ())
        set_if_exists ('encodingdescription', ids.get_encoding_description ())

        set_if_exists ('texidoc', ids.get_file_description ());

        # Finally, apply the required compatibility modes
        # Some applications created wrong MusicXML files, so we need to
        # apply some compatibility mode, e.g. ignoring some features/tags
        # in those files
        software = ids.get_encoding_software_list ()

        # Case 1: "Sibelius 5.1" with the "Dolet 3.4 for Sibelius" plugin
        #         is missing all beam ends => ignore all beaming information
        ignore_beaming_software = {
            "Dolet 4 for Sibelius, Beta 2": "Dolet 4 for Sibelius, Beta 2",
            "Dolet 3.5 for Sibelius": "Dolet 3.5 for Sibelius",
            "Dolet 3.4 for Sibelius": "Dolet 3.4 for Sibelius",
            "Dolet 3.3 for Sibelius": "Dolet 3.3 for Sibelius",
            "Dolet 3.2 for Sibelius": "Dolet 3.2 for Sibelius",
            "Dolet 3.1 for Sibelius": "Dolet 3.1 for Sibelius",
            "Dolet for Sibelius 1.3": "Dolet for Sibelius 1.3",
            "Noteworthy Composer": "Noteworthy Composer's nwc2xm[",
        }
        for s in software:
            app_description = ignore_beaming_software.get (s, False);
            if app_description:
                conversion_settings.ignore_beaming = True
                progress (_ ("Encountered file created by %s, containing wrong beaming information. All beaming information in the MusicXML file will be ignored") % app_description)

    # TODO: Check for other unsupported features
    return header

class PartGroupInfo:
    def __init__ (self):
        self.start = {}
        self.end = {}
    def is_empty (self):
        return len (self.start) + len (self.end) == 0
    def add_start (self, g):
        self.start[getattr (g, 'number', "1")] = g
    def add_end (self, g):
        self.end[getattr (g, 'number', "1")] = g
    def print_ly (self, printer):
        error_message (_ ("Unprocessed PartGroupInfo %s encountered") % self)
    def ly_expression (self):
        error_message (_ ("Unprocessed PartGroupInfo %s encountered") % self)
        return ''

def musicxml_step_to_lily (step):
    if step:
        return (ord (step) - ord ('A') + 7 - 2) % 7
    else:
        return None


def staff_attributes_to_string_tunings (mxl_attr):
    details = mxl_attr.get_maybe_exist_named_child ('staff-details')
    if not details:
        return []
    lines = 6
    staff_lines = details.get_maybe_exist_named_child ('staff-lines')
    if staff_lines:
        lines = string.atoi (staff_lines.get_text ())

    tunings = [musicexp.Pitch()]*lines
    staff_tunings = details.get_named_children ('staff-tuning')
    for i in staff_tunings:
        p = musicexp.Pitch()
        line = 0
        try:
            line = string.atoi (i.line) - 1
        except ValueError:
            pass
        tunings[line] = p

        step = i.get_named_child (u'tuning-step')
        step = step.get_text ().strip ()
        p.step = musicxml_step_to_lily (step)

        octave = i.get_named_child (u'tuning-octave')
        octave = octave.get_text ().strip ()
        p.octave = int (octave) - 4

        alter = i.get_named_child (u'tuning-alter')
        if alter:
            p.alteration = int (alter.get_text ().strip ())
    # lilypond seems to use the opposite ordering than MusicXML...
    tunings.reverse ()

    return tunings


def staff_attributes_to_lily_staff (mxl_attr):
    if not mxl_attr:
        return musicexp.Staff ()

    (staff_id, attributes) = mxl_attr.items ()[0]

    # distinguish by clef:
    # percussion (percussion and rhythmic), tab, and everything else
    clef_sign = None
    clef = attributes.get_maybe_exist_named_child ('clef')
    if clef:
        sign = clef.get_maybe_exist_named_child ('sign')
        if sign:
            clef_sign = {"percussion": "percussion", "TAB": "tab"}.get (sign.get_text (), None)

    lines = 5
    details = attributes.get_named_children ('staff-details')
    for d in details:
        staff_lines = d.get_maybe_exist_named_child ('staff-lines')
        if staff_lines:
            lines = string.atoi (staff_lines.get_text ())

    # TODO: Handle other staff attributes like staff-space, etc.

    staff = None
    if clef_sign == "percussion" and lines == 1:
        staff = musicexp.RhythmicStaff ()
    elif clef_sign == "percussion":
        staff = musicexp.DrumStaff ()
        # staff.drum_style_table = ???
    elif clef_sign == "tab":
        staff = musicexp.TabStaff ()
        staff.string_tunings = staff_attributes_to_string_tunings (attributes)
        # staff.tablature_format = ???
    else:
        staff = musicexp.Staff ()
        # TODO: Handle case with lines <> 5!
        if (lines != 5):
            staff.add_context_modification ("\\override StaffSymbol #'line-count = #%s" % lines)


    return staff


def extract_score_structure (part_list, staffinfo):
    score = musicexp.Score ()
    structure = musicexp.StaffGroup (None)
    score.set_contents (structure)

    if not part_list:
        return structure

    def read_score_part (el):
        if not isinstance (el, musicxml.Score_part):
            return
        # Depending on the attributes of the first measure, we create different
        # types of staves (Staff, RhythmicStaff, DrumStaff, TabStaff, etc.)
        staff = staff_attributes_to_lily_staff (staffinfo.get (el.id, None))
        if not staff:
            return None
        staff.id = el.id
        partname = el.get_maybe_exist_named_child ('part-name')
        # Finale gives unnamed parts the name "MusicXML Part" automatically!
        if partname and partname.get_text() != "MusicXML Part":
            staff.instrument_name = partname.get_text ()
        # part-name-display overrides part-name!
        partname = el.get_maybe_exist_named_child ("part-name-display")
        if partname:
            staff.instrument_name = extract_display_text (partname)

        partdisplay = el.get_maybe_exist_named_child ('part-abbreviation')
        if partdisplay:
            staff.short_instrument_name = partdisplay.get_text ()
        # part-abbreviation-display overrides part-abbreviation!
        partdisplay = el.get_maybe_exist_named_child ("part-abbreviation-display")
        if partdisplay:
            staff.short_instrument_name = extract_display_text (partdisplay)
        # TODO: Read in the MIDI device / instrument

        return staff

    def read_score_group (el):
        if not isinstance (el, musicxml.Part_group):
            return
        group = musicexp.StaffGroup ()
        if hasattr (el, 'number'):
            id = el.number
            group.id = id
            #currentgroups_dict[id] = group
            #currentgroups.append (id)
        if el.get_maybe_exist_named_child ('group-name'):
            group.instrument_name = el.get_maybe_exist_named_child ('group-name').get_text ()
        if el.get_maybe_exist_named_child ('group-abbreviation'):
            group.short_instrument_name = el.get_maybe_exist_named_child ('group-abbreviation').get_text ()
        if el.get_maybe_exist_named_child ('group-symbol'):
            group.symbol = el.get_maybe_exist_named_child ('group-symbol').get_text ()
        if el.get_maybe_exist_named_child ('group-barline'):
            group.spanbar = el.get_maybe_exist_named_child ('group-barline').get_text ()
        return group


    parts_groups = part_list.get_all_children ()

    # the start/end group tags are not necessarily ordered correctly and groups
    # might even overlap, so we can't go through the children sequentially!

    # 1) Replace all Score_part objects by their corresponding Staff objects,
    #    also collect all group start/stop points into one PartGroupInfo object
    staves = []
    group_info = PartGroupInfo ()
    for el in parts_groups:
        if isinstance (el, musicxml.Score_part):
            if not group_info.is_empty ():
                staves.append (group_info)
                group_info = PartGroupInfo ()
            staff = read_score_part (el)
            if staff:
                staves.append (staff)
        elif isinstance (el, musicxml.Part_group):
            if el.type == "start":
                group_info.add_start (el)
            elif el.type == "stop":
                group_info.add_end (el)
    if not group_info.is_empty ():
        staves.append (group_info)

    # 2) Now, detect the groups:
    group_starts = []
    pos = 0
    while pos < len (staves):
        el = staves[pos]
        if isinstance (el, PartGroupInfo):
            prev_start = 0
            if len (group_starts) > 0:
                prev_start = group_starts[-1]
            elif len (el.end) > 0: # no group to end here
                el.end = {}
            if len (el.end) > 0: # closes an existing group
                ends = el.end.keys ()
                prev_started = staves[prev_start].start.keys ()
                grpid = None
                intersection = filter(lambda x:x in ends, prev_started)
                if len (intersection) > 0:
                    grpid = intersection[0]
                else:
                    # Close the last started group
                    grpid = staves[prev_start].start.keys () [0]
                    # Find the corresponding closing tag and remove it!
                    j = pos + 1
                    foundclosing = False
                    while j < len (staves) and not foundclosing:
                        if isinstance (staves[j], PartGroupInfo) and staves[j].end.has_key (grpid):
                            foundclosing = True
                            del staves[j].end[grpid]
                            if staves[j].is_empty ():
                                del staves[j]
                        j += 1
                grpobj = staves[prev_start].start[grpid]
                group = read_score_group (grpobj)
                # remove the id from both the start and end
                if el.end.has_key (grpid):
                    del el.end[grpid]
                del staves[prev_start].start[grpid]
                if el.is_empty ():
                    del staves[pos]
                # replace the staves with the whole group
                for j in staves[(prev_start + 1):pos]:
                    group.append_staff (j)
                del staves[(prev_start + 1):pos]
                staves.insert (prev_start + 1, group)
                # reset pos so that we continue at the correct position
                pos = prev_start
                # remove an empty start group
                if staves[prev_start].is_empty ():
                    del staves[prev_start]
                    group_starts.remove (prev_start)
                    pos -= 1
            elif len (el.start) > 0: # starts new part groups
                group_starts.append (pos)
        pos += 1

    if len (staves) == 1:
        return staves[0]
    for i in staves:
        structure.append_staff (i)
    return score


def musicxml_duration_to_lily (mxl_note):
    # if the note has no Type child, then that method returns None. In that case,
    # use the <duration> tag instead. If that doesn't exist, either -> Error
    dur = mxl_note.get_duration_info ()
    if dur:
        d = musicexp.Duration ()
        d.duration_log = dur[0]
        d.dots = dur[1]
        # Grace notes by specification have duration 0, so no time modification
        # factor is possible. It even messes up the output with *0/1
        if not mxl_note.get_maybe_exist_typed_child (musicxml.Grace):
            d.factor = mxl_note._duration / d.get_length ()
        return d

    else:
        if mxl_note._duration > 0:
            return rational_to_lily_duration (mxl_note._duration)
        else:
            mxl_note.message (_ ("Encountered note at %s without type and duration (=%s)") % (mxl_note.start, mxl_note._duration) )
            return None


def rational_to_lily_duration (rational_len):
    d = musicexp.Duration ()

    rational_len.normalize_self ()
    d_log = {1: 0, 2: 1, 4:2, 8:3, 16:4, 32:5, 64:6, 128:7, 256:8, 512:9}.get (rational_len.denominator (), -1)

    # Duration of the form 1/2^n or 3/2^n can be converted to a simple lilypond duration
    dots = {1: 0, 3: 1, 7: 2, 15: 3, 31: 4, 63: 5, 127: 6}.get (rational_len.numerator(), -1)
    if ( d_log >= dots >= 0 ):
        # account for the dots!
        d.duration_log = d_log - dots
        d.dots = dots
    elif (d_log >= 0):
        d.duration_log = d_log
        d.factor = Rational (rational_len.numerator ())
    else:
        error_message (_ ("Encountered rational duration with denominator %s, "
                       "unable to convert to lilypond duration") %
                       rational_len.denominator ())
        # TODO: Test the above error message
        return None

    return d

def musicxml_partial_to_lily (partial_len):
    if partial_len > 0:
        p = musicexp.Partial ()
        p.partial = rational_to_lily_duration (partial_len)
        return p
    else:
        return Null

# Detect repeats and alternative endings in the chord event list (music_list)
# and convert them to the corresponding musicexp objects, containing nested
# music
def group_repeats (music_list):
    repeat_replaced = True
    music_start = 0
    i = 0
    # Walk through the list of expressions, looking for repeat structure
    # (repeat start/end, corresponding endings). If we find one, try to find the
    # last event of the repeat, replace the whole structure and start over again.
    # For nested repeats, as soon as we encounter another starting repeat bar,
    # treat that one first, and start over for the outer repeat.
    while repeat_replaced and i < 100:
        i += 1
        repeat_start = -1  # position of repeat start / end
        repeat_end = -1 # position of repeat start / end
        repeat_times = 0
        ending_start = -1 # position of current ending start
        endings = [] # list of already finished endings
        pos = 0
        last = len (music_list) - 1
        repeat_replaced = False
        final_marker = 0
        while pos < len (music_list) and not repeat_replaced:
            e = music_list[pos]
            repeat_finished = False
            if isinstance (e, RepeatMarker):
                if not repeat_times and e.times:
                    repeat_times = e.times
                if e.direction == -1:
                    if repeat_end >= 0:
                        repeat_finished = True
                    else:
                        repeat_start = pos
                        repeat_end = -1
                        ending_start = -1
                        endings = []
                elif e.direction == 1:
                    if repeat_start < 0:
                        repeat_start = 0
                    if repeat_end < 0:
                        repeat_end = pos
                    final_marker = pos
            elif isinstance (e, EndingMarker):
                if e.direction == -1:
                    if repeat_start < 0:
                        repeat_start = 0
                    if repeat_end < 0:
                        repeat_end = pos
                    ending_start = pos
                elif e.direction == 1:
                    if ending_start < 0:
                        ending_start = 0
                    endings.append ([ending_start, pos])
                    ending_start = -1
                    final_marker = pos
            elif not isinstance (e, musicexp.BarLine):
                # As soon as we encounter an element when repeat start and end
                # is set and we are not inside an alternative ending,
                # this whole repeat structure is finished => replace it
                if repeat_start >= 0 and repeat_end > 0 and ending_start < 0:
                    repeat_finished = True

            # Finish off all repeats without explicit ending bar (e.g. when
            # we convert only one page of a multi-page score with repeats)
            if pos == last and repeat_start >= 0:
                repeat_finished = True
                final_marker = pos
                if repeat_end < 0:
                    repeat_end = pos
                if ending_start >= 0:
                    endings.append ([ending_start, pos])
                    ending_start = -1

            if repeat_finished:
                # We found the whole structure replace it!
                r = musicexp.RepeatedMusic ()
                if repeat_times <= 0:
                    repeat_times = 2
                r.repeat_count = repeat_times
                # don't erase the first element for "implicit" repeats (i.e. no
                # starting repeat bars at the very beginning)
                start = repeat_start+1
                if repeat_start == music_start:
                    start = music_start
                r.set_music (music_list[start:repeat_end])
                for (start, end) in endings:
                    s = musicexp.SequentialMusic ()
                    s.elements = music_list[start+1:end]
                    r.add_ending (s)
                del music_list[repeat_start:final_marker+1]
                music_list.insert (repeat_start, r)
                repeat_replaced = True
            pos += 1
        # TODO: Implement repeats until the end without explicit ending bar
    return music_list


# Extract the settings for tuplets from the <notations><tuplet> and the
# <time-modification> elements of the note:
def musicxml_tuplet_to_lily (tuplet_elt, time_modification):
    tsm = musicexp.TimeScaledMusic ()
    fraction = (1,1)
    if time_modification:
        fraction = time_modification.get_fraction ()
    tsm.numerator = fraction[0]
    tsm.denominator  = fraction[1]


    normal_type = tuplet_elt.get_normal_type ()
    if not normal_type and time_modification:
        normal_type = time_modification.get_normal_type ()
    if not normal_type and time_modification:
        note = time_modification.get_parent ()
        if note:
            normal_type = note.get_duration_info ()
    if normal_type:
        normal_note = musicexp.Duration ()
        (normal_note.duration_log, normal_note.dots) = normal_type
        tsm.normal_type = normal_note

    actual_type = tuplet_elt.get_actual_type ()
    if actual_type:
        actual_note = musicexp.Duration ()
        (actual_note.duration_log, actual_note.dots) = actual_type
        tsm.actual_type = actual_note

    # Obtain non-default nrs of notes from the tuplet object!
    tsm.display_numerator = tuplet_elt.get_normal_nr ()
    tsm.display_denominator = tuplet_elt.get_actual_nr ()


    if hasattr (tuplet_elt, 'bracket') and tuplet_elt.bracket == "no":
        tsm.display_bracket = None
    elif hasattr (tuplet_elt, 'line-shape') and getattr (tuplet_elt, 'line-shape') == "curved":
        tsm.display_bracket = "curved"
    else:
        tsm.display_bracket = "bracket"

    display_values = {"none": None, "actual": "actual", "both": "both"}
    if hasattr (tuplet_elt, "show-number"):
        tsm.display_number = display_values.get (getattr (tuplet_elt, "show-number"), "actual")

    if hasattr (tuplet_elt, "show-type"):
        tsm.display_type = display_values.get (getattr (tuplet_elt, "show-type"), None)

    return tsm


def group_tuplets (music_list, events):


    """Collect Musics from
    MUSIC_LIST demarcated by EVENTS_LIST in TimeScaledMusic objects.
    """


    indices = []
    brackets = {}

    j = 0
    for (ev_chord, tuplet_elt, time_modification) in events:
        while (j < len (music_list)):
            if music_list[j] == ev_chord:
                break
            j += 1
        nr = 0
        if hasattr (tuplet_elt, 'number'):
            nr = getattr (tuplet_elt, 'number')
        if tuplet_elt.type == 'start':
            tuplet_object = musicxml_tuplet_to_lily (tuplet_elt, time_modification)
            tuplet_info = [j, None, tuplet_object]
            indices.append (tuplet_info)
            brackets[nr] = tuplet_info
        elif tuplet_elt.type == 'stop':
            bracket_info = brackets.get (nr, None)
            if bracket_info:
                bracket_info[1] = j # Set the ending position to j
                del brackets[nr]

    new_list = []
    last = 0
    for (i1, i2, tsm) in indices:
        if i1 > i2:
            continue

        new_list.extend (music_list[last:i1])
        seq = musicexp.SequentialMusic ()
        last = i2 + 1
        seq.elements = music_list[i1:last]

        tsm.element = seq

        new_list.append (tsm)
        #TODO: Handle nested tuplets!!!!

    new_list.extend (music_list[last:])
    return new_list


def musicxml_clef_to_lily (attributes):
    change = musicexp.ClefChange ()
    (change.type, change.position, change.octave) = attributes.get_clef_information ()
    return change

def musicxml_time_to_lily (attributes):
    sig = attributes.get_time_signature ()
    if not sig:
        return None
    change = musicexp.TimeSignatureChange()
    change.fractions = sig

    time_elm = attributes.get_maybe_exist_named_child ('time')
    if time_elm and hasattr (time_elm, 'symbol'):
        change.style = { 'single-number': "'single-digit",
                         'cut': None,
                         'common': None,
                         'normal': "'()"}.get (time_elm.symbol, "'()")
    else:
        change.style = "'()"

    # TODO: Handle senza-misura measures
    # TODO: Handle hidden time signatures (print-object="no")
    # TODO: What shall we do if the symbol clashes with the sig? e.g. "cut"
    #       with 3/8 or "single-number" with (2+3)/8 or 3/8+2/4?

    return change

def musicxml_key_to_lily (attributes):
    key_sig = attributes.get_key_signature ()
    if not key_sig or not (isinstance (key_sig, list) or isinstance (key_sig, tuple)):
        error_message (_ ("Unable to extract key signature!"))
        return None

    change = musicexp.KeySignatureChange()

    if len (key_sig) == 2 and not isinstance (key_sig[0], list):
        # standard key signature, (fifths, mode)
        (fifths, mode) = key_sig
        change.mode = mode

        start_pitch  = musicexp.Pitch ()
        start_pitch.octave = 0
        try:
            (n,a) = {
                'major'     : (0,0),
                'minor'     : (5,0),
                'ionian'    : (0,0),
                'dorian'    : (1,0),
                'phrygian'  : (2,0),
                'lydian'    : (3,0),
                'mixolydian': (4,0),
                'aeolian'   : (5,0),
                'locrian'   : (6,0),
                }[mode]
            start_pitch.step = n
            start_pitch.alteration = a
        except  KeyError:
            error_message (_ ("unknown mode %s, expecting 'major' or 'minor' "
                "or a church mode!") % mode)

        fifth = musicexp.Pitch()
        fifth.step = 4
        if fifths < 0:
            fifths *= -1
            fifth.step *= -1
            fifth.normalize ()
        for x in range (fifths):
            start_pitch = start_pitch.transposed (fifth)
        change.tonic = start_pitch

    else:
        # Non-standard key signature of the form [[step,alter<,octave>],...]
        # MusicXML contains C,D,E,F,G,A,B as steps, lily uses 0-7, so convert
        alterations = []
        for k in key_sig:
            k[0] = musicxml_step_to_lily (k[0])
            alterations.append (k)
        change.non_standard_alterations = alterations
    return change

def musicxml_transpose_to_lily (attributes):
    transpose = attributes.get_transposition ()
    if not transpose:
        return None

    shift = musicexp.Pitch ()
    octave_change = transpose.get_maybe_exist_named_child ('octave-change')
    if octave_change:
        shift.octave = string.atoi (octave_change.get_text ())
    chromatic_shift = string.atoi (transpose.get_named_child ('chromatic').get_text ())
    chromatic_shift_normalized = chromatic_shift % 12;
    (shift.step, shift.alteration) = [
        (0,0), (0,1), (1,0), (2,-1), (2,0),
        (3,0), (3,1), (4,0), (5,-1), (5,0),
        (6,-1), (6,0)][chromatic_shift_normalized];

    shift.octave += (chromatic_shift - chromatic_shift_normalized) / 12

    diatonic = transpose.get_maybe_exist_named_child ('diatonic')
    if diatonic:
        diatonic_step = string.atoi (diatonic.get_text ()) % 7
        if diatonic_step != shift.step:
            # We got the alter incorrect!
            old_semitones = shift.semitones ()
            shift.step = diatonic_step
            new_semitones = shift.semitones ()
            shift.alteration += old_semitones - new_semitones

    transposition = musicexp.Transposition ()
    transposition.pitch = musicexp.Pitch ().transposed (shift)
    return transposition

def musicxml_staff_details_to_lily (attributes):
    details = attributes.get_maybe_exist_named_child ('staff-details')
    if not details:
        return None

    ## TODO: Handle staff-type, staff-lines, staff-tuning, capo, staff-size
    ret = []

    stafflines = details.get_maybe_exist_named_child ('staff-lines')
    if stafflines:
        lines = string.atoi (stafflines.get_text ());
        lines_event = musicexp.StaffLinesEvent (lines);
        ret.append (lines_event);

    return ret;


def musicxml_attributes_to_lily (attrs):
    elts = []
    attr_dispatch =  {
        'clef': musicxml_clef_to_lily,
        'time': musicxml_time_to_lily,
        'key': musicxml_key_to_lily,
        'transpose': musicxml_transpose_to_lily,
        'staff-details': musicxml_staff_details_to_lily,
    }
    for (k, func) in attr_dispatch.items ():
        children = attrs.get_named_children (k)
        if children:
            ev = func (attrs)
            if isinstance (ev, list):
              for e in ev:
                elts.append (e)
            elif ev:
                elts.append (ev)

    return elts

def extract_display_text (el):
    child = el.get_maybe_exist_named_child ("display-text")
    if child:
        return child.get_text ()
    else:
        return False


def musicxml_print_to_lily (el):
    # TODO: Implement other print attributes
    #  <!ELEMENT print (page-layout?, system-layout?, staff-layout*,
    #          measure-layout?, measure-numbering?, part-name-display?,
    #          part-abbreviation-display?)>
    #  <!ATTLIST print
    #      staff-spacing %tenths; #IMPLIED
    #      new-system %yes-no; #IMPLIED
    #      new-page %yes-no-number; #IMPLIED
    #      blank-page NMTOKEN #IMPLIED
    #      page-number CDATA #IMPLIED
    #  >
    elts = []
    if (hasattr (el, "new-system") and conversion_settings.convert_page_layout):
        val = getattr (el, "new-system")
        if (val == "yes"):
            elts.append (musicexp.Break ("break"))
    if (hasattr (el, "new-page") and conversion_settings.convert_page_layout):
        val = getattr (el, "new-page")
        if (val == "yes"):
            elts.append (musicexp.Break ("pageBreak"))
    child = el.get_maybe_exist_named_child ("part-name-display")
    if child:
        elts.append (musicexp.SetEvent ("Staff.instrumentName",
                                        "\"%s\"" % extract_display_text (child)))
    child = el.get_maybe_exist_named_child ("part-abbreviation-display")
    if child:
        elts.append (musicexp.SetEvent ("Staff.shortInstrumentName",
                                        "\"%s\"" % extract_display_text (child)))
    return elts


class Marker (musicexp.Music):
    def __init__ (self):
        self.direction = 0
        self.event = None
    def print_ly (self, printer):
        ly.stderr_write (_ ("Encountered unprocessed marker %s\n") % self)
        pass
    def ly_expression (self):
        return ""
class RepeatMarker (Marker):
    def __init__ (self):
        Marker.__init__ (self)
        self.times = 0
class EndingMarker (Marker):
    pass

# Convert the <barline> element to musicxml.BarLine (for non-standard barlines)
# and to RepeatMarker and EndingMarker objects for repeat and
# alternatives start/stops
def musicxml_barline_to_lily (barline):
    # retval contains all possible markers in the order:
    # 0..bw_ending, 1..bw_repeat, 2..barline, 3..fw_repeat, 4..fw_ending
    retval = {}
    bartype_element = barline.get_maybe_exist_named_child ("bar-style")
    repeat_element = barline.get_maybe_exist_named_child ("repeat")
    ending_element = barline.get_maybe_exist_named_child ("ending")

    bartype = None
    if bartype_element:
        bartype = bartype_element.get_text ()

    if repeat_element and hasattr (repeat_element, 'direction'):
        repeat = RepeatMarker ()
        repeat.direction = {"forward": -1, "backward": 1}.get (repeat_element.direction, 0)

        if ( (repeat_element.direction == "forward" and bartype == "heavy-light") or
             (repeat_element.direction == "backward" and bartype == "light-heavy") ):
            bartype = None
        if hasattr (repeat_element, 'times'):
            try:
                repeat.times = int (repeat_element.times)
            except ValueError:
                repeat.times = 2
        repeat.event = barline
        if repeat.direction == -1:
            retval[3] = repeat
        else:
            retval[1] = repeat

    if ending_element and hasattr (ending_element, 'type'):
        ending = EndingMarker ()
        ending.direction = {"start": -1, "stop": 1, "discontinue": 1}.get (ending_element.type, 0)
        ending.event = barline
        if ending.direction == -1:
            retval[4] = ending
        else:
            retval[0] = ending

    if bartype:
        b = musicexp.BarLine ()
        b.type = bartype
        retval[2] = b

    return retval.values ()

spanner_event_dict = {
    'beam' : musicexp.BeamEvent,
    'dashes' : musicexp.TextSpannerEvent,
    'bracket' : musicexp.BracketSpannerEvent,
    'glissando' : musicexp.GlissandoEvent,
    'octave-shift' : musicexp.OctaveShiftEvent,
    'pedal' : musicexp.PedalEvent,
    'slide' : musicexp.GlissandoEvent,
    'slur' : musicexp.SlurEvent,
    'wavy-line' : musicexp.TrillSpanEvent,
    'wedge' : musicexp.HairpinEvent
}
spanner_type_dict = {
    'start': -1,
    'begin': -1,
    'crescendo': -1,
    'decreschendo': -1,
    'diminuendo': -1,
    'continue': 0,
    'change': 0,
    'up': -1,
    'down': -1,
    'stop': 1,
    'end' : 1
}

def musicxml_spanner_to_lily_event (mxl_event):
    ev = None

    name = mxl_event.get_name()
    func = spanner_event_dict.get (name)
    if func:
        ev = func()
    else:
        error_message (_ ('unknown span event %s') % mxl_event)


    type = mxl_event.get_type ()
    span_direction = spanner_type_dict.get (type)
    # really check for None, because some types will be translated to 0, which
    # would otherwise also lead to the unknown span warning
    if span_direction != None:
        ev.span_direction = span_direction
    else:
        error_message (_ ('unknown span type %s for %s') % (type, name))

    ev.set_span_type (type)
    ev.line_type = getattr (mxl_event, 'line-type', 'solid')

    # assign the size, which is used for octave-shift, etc.
    ev.size = mxl_event.get_size ()

    return ev

def musicxml_direction_to_indicator (direction):
    return { "above": 1, "upright": 1, "up": 1, "below": -1, "downright": -1, "down": -1, "inverted": -1 }.get (direction, 0)

def musicxml_fermata_to_lily_event (mxl_event):
    ev = musicexp.ArticulationEvent ()
    txt = mxl_event.get_text ()
    # The contents of the element defined the shape, possible are normal, angled and square
    ev.type = { "angled": "shortfermata", "square": "longfermata" }.get (txt, "fermata")
    if hasattr (mxl_event, 'type'):
      dir = musicxml_direction_to_indicator (mxl_event.type)
      if dir and options.convert_directions:
        ev.force_direction = dir
    return ev

def musicxml_arpeggiate_to_lily_event (mxl_event):
    ev = musicexp.ArpeggioEvent ()
    ev.direction = musicxml_direction_to_indicator (getattr (mxl_event, 'direction', None))
    return ev

def musicxml_nonarpeggiate_to_lily_event (mxl_event):
    ev = musicexp.ArpeggioEvent ()
    ev.non_arpeggiate = True
    ev.direction = musicxml_direction_to_indicator (getattr (mxl_event, 'direction', None))
    return ev

def musicxml_tremolo_to_lily_event (mxl_event):
    ev = musicexp.TremoloEvent ()
    txt = mxl_event.get_text ()
    if txt:
      ev.bars = txt
    else:
      ev.bars = "3"
    return ev

def musicxml_falloff_to_lily_event (mxl_event):
    ev = musicexp.BendEvent ()
    ev.alter = -4
    return ev

def musicxml_doit_to_lily_event (mxl_event):
    ev = musicexp.BendEvent ()
    ev.alter = 4
    return ev

def musicxml_bend_to_lily_event (mxl_event):
    ev = musicexp.BendEvent ()
    ev.alter = mxl_event.bend_alter ()
    return ev

def musicxml_caesura_to_lily_event (mxl_event):
    ev = musicexp.MarkupEvent ()
    # FIXME: default to straight or curved caesura?
    ev.contents = "\\musicglyph #\"scripts.caesura.straight\""
    ev.force_direction = 1
    return ev

def musicxml_fingering_event (mxl_event):
    ev = musicexp.ShortArticulationEvent ()
    ev.type = mxl_event.get_text ()
    return ev

def musicxml_string_event (mxl_event):
    ev = musicexp.NoDirectionArticulationEvent ()
    ev.type = mxl_event.get_text ()
    return ev

def musicxml_accidental_mark (mxl_event):
    ev = musicexp.MarkupEvent ()
    contents = { "sharp": "\\sharp",
      "natural": "\\natural",
      "flat": "\\flat",
      "double-sharp": "\\doublesharp",
      "sharp-sharp": "\\sharp\\sharp",
      "flat-flat": "\\flat\\flat",
      "flat-flat": "\\doubleflat",
      "natural-sharp": "\\natural\\sharp",
      "natural-flat": "\\natural\\flat",
      "quarter-flat": "\\semiflat",
      "quarter-sharp": "\\semisharp",
      "three-quarters-flat": "\\sesquiflat",
      "three-quarters-sharp": "\\sesquisharp",
    }.get (mxl_event.get_text ())
    if contents:
        ev.contents = contents
        return ev
    else:
        return None

# translate articulations, ornaments and other notations into ArticulationEvents
# possible values:
#   -) string  (ArticulationEvent with that name)
#   -) function (function(mxl_event) needs to return a full ArticulationEvent-derived object
#   -) (class, name)  (like string, only that a different class than ArticulationEvent is used)
# TODO: Some translations are missing!
articulations_dict = {
    "accent": (musicexp.ShortArticulationEvent, ">"), # or "accent"
    "accidental-mark": musicxml_accidental_mark,
    "bend": musicxml_bend_to_lily_event,
    "breath-mark": (musicexp.NoDirectionArticulationEvent, "breathe"),
    "caesura": musicxml_caesura_to_lily_event,
    #"delayed-turn": "?",
    "detached-legato": (musicexp.ShortArticulationEvent, "_"), # or "portato"
    "doit": musicxml_doit_to_lily_event,
    #"double-tongue": "?",
    "down-bow": "downbow",
    "falloff": musicxml_falloff_to_lily_event,
    "fingering": musicxml_fingering_event,
    #"fingernails": "?",
    #"fret": "?",
    #"hammer-on": "?",
    "harmonic": "flageolet",
    #"heel": "?",
    "inverted-mordent": "prall",
    "inverted-turn": "reverseturn",
    "mordent": "mordent",
    "open-string": "open",
    #"plop": "?",
    #"pluck": "?",
    #"pull-off": "?",
    #"schleifer": "?",
    #"scoop": "?",
    #"shake": "?",
    "snap-pizzicato": "snappizzicato",
    #"spiccato": "?",
    "staccatissimo": (musicexp.ShortArticulationEvent, "|"), # or "staccatissimo"
    "staccato": (musicexp.ShortArticulationEvent, "."), # or "staccato"
    "stopped": (musicexp.ShortArticulationEvent, "+"), # or "stopped"
    #"stress": "?",
    "string": musicxml_string_event,
    "strong-accent": (musicexp.ShortArticulationEvent, "^"), # or "marcato"
    #"tap": "?",
    "tenuto": (musicexp.ShortArticulationEvent, "-"), # or "tenuto"
    "thumb-position": "thumb",
    #"toe": "?",
    "turn": "turn",
    "tremolo": musicxml_tremolo_to_lily_event,
    "trill-mark": "trill",
    #"triple-tongue": "?",
    #"unstress": "?"
    "up-bow": "upbow",
    #"wavy-line": "?",
}
articulation_spanners = [ "wavy-line" ]

def musicxml_articulation_to_lily_event (mxl_event):
    # wavy-line elements are treated as trill spanners, not as articulation ornaments
    if mxl_event.get_name () in articulation_spanners:
        return musicxml_spanner_to_lily_event (mxl_event)

    tmp_tp = articulations_dict.get (mxl_event.get_name ())
    if not tmp_tp:
        return

    if isinstance (tmp_tp, str):
        ev = musicexp.ArticulationEvent ()
        ev.type = tmp_tp
    elif isinstance (tmp_tp, tuple):
        ev = tmp_tp[0] ()
        ev.type = tmp_tp[1]
    else:
        ev = tmp_tp (mxl_event)

    # Some articulations use the type attribute, other the placement...
    dir = None
    if hasattr (mxl_event, 'type') and options.convert_directions:
        dir = musicxml_direction_to_indicator (mxl_event.type)
    if hasattr (mxl_event, 'placement') and options.convert_directions:
        dir = musicxml_direction_to_indicator (mxl_event.placement)
    if dir:
        ev.force_direction = dir
    return ev



def musicxml_dynamics_to_lily_event (dynentry):
    dynamics_available = (
        "ppppp", "pppp", "ppp", "pp", "p", "mp", "mf",
        "f", "ff", "fff", "ffff", "fp", "sf", "sff", "sp", "spp", "sfz", "rfz" )
    dynamicsname = dynentry.get_name ()
    if dynamicsname == "other-dynamics":
        dynamicsname = dynentry.get_text ()
    if not dynamicsname or dynamicsname=="#text":
        return

    if not dynamicsname in dynamics_available:
        # Get rid of - in tag names (illegal in ly tags!)
        dynamicstext = dynamicsname
        dynamicsname = string.replace (dynamicsname, "-", "")
        additional_definitions[dynamicsname] = dynamicsname + \
              " = #(make-dynamic-script \"" + dynamicstext + "\")"
        needed_additional_definitions.append (dynamicsname)
    event = musicexp.DynamicsEvent ()
    event.type = dynamicsname
    return event

# Convert single-color two-byte strings to numbers 0.0 - 1.0
def hexcolorval_to_nr (hex_val):
    try:
        v = int (hex_val, 16)
        if v == 255:
            v = 256
        return v / 256.
    except ValueError:
        return 0.

def hex_to_color (hex_val):
    res = re.match (r'#([0-9a-f][0-9a-f]|)([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])$', hex_val, re.IGNORECASE)
    if res:
        return map (lambda x: hexcolorval_to_nr (x), res.group (2,3,4))
    else:
        return None

def musicxml_words_to_lily_event (words):
    event = musicexp.TextEvent ()
    text = words.get_text ()
    text = re.sub ('^ *\n? *', '', text)
    text = re.sub (' *\n? *$', '', text)
    event.text = text

    if hasattr (words, 'default-y') and options.convert_directions:
        offset = getattr (words, 'default-y')
        try:
            off = string.atoi (offset)
            if off > 0:
                event.force_direction = 1
            else:
                event.force_direction = -1
        except ValueError:
            event.force_direction = 0

    if hasattr (words, 'font-weight'):
        font_weight = { "normal": '', "bold": '\\bold' }.get (getattr (words, 'font-weight'), '')
        if font_weight:
            event.markup += font_weight

    if hasattr (words, 'font-size'):
        size = getattr (words, 'font-size')
        font_size = {
            "xx-small": '\\teeny',
            "x-small": '\\tiny',
            "small": '\\small',
            "medium": '',
            "large": '\\large',
            "x-large": '\\huge',
            "xx-large": '\\larger\\huge'
        }.get (size, '')
        if font_size:
            event.markup += font_size

    if hasattr (words, 'color'):
        color = getattr (words, 'color')
        rgb = hex_to_color (color)
        if rgb:
            event.markup += "\\with-color #(rgb-color %s %s %s)" % (rgb[0], rgb[1], rgb[2])

    if hasattr (words, 'font-style'):
        font_style = { "italic": '\\italic' }.get (getattr (words, 'font-style'), '')
        if font_style:
            event.markup += font_style

    # TODO: How should I best convert the font-family attribute?

    # TODO: How can I represent the underline, overline and line-through
    #       attributes in LilyPond? Values of these attributes indicate
    #       the number of lines

    return event


# convert accordion-registration to lilypond.
# Since lilypond does not have any built-in commands, we need to create
# the markup commands manually and define our own variables.
# Idea was taken from: http://lsr.dsi.unimi.it/LSR/Item?id=194
def musicxml_accordion_to_markup (mxl_event):
    commandname = "accReg"
    command = ""

    high = mxl_event.get_maybe_exist_named_child ('accordion-high')
    if high:
        commandname += "H"
        command += """\\combine
          \\raise #2.5 \\musicglyph #\"accordion.dot\"
          """
    middle = mxl_event.get_maybe_exist_named_child ('accordion-middle')
    if middle:
        # By default, use one dot (when no or invalid content is given). The
        # MusicXML spec is quiet about this case...
        txt = 1
        try:
          txt = string.atoi (middle.get_text ())
        except ValueError:
            pass
        if txt == 3:
            commandname += "MMM"
            command += """\\combine
          \\raise #1.5 \\musicglyph #\"accordion.dot\"
          \\combine
          \\raise #1.5 \\translate #(cons 1 0) \\musicglyph #\"accordion.dot\"
          \\combine
          \\raise #1.5 \\translate #(cons -1 0) \\musicglyph #\"accordion.dot\"
          """
        elif txt == 2:
            commandname += "MM"
            command += """\\combine
          \\raise #1.5 \\translate #(cons 0.5 0) \\musicglyph #\"accordion.dot\"
          \\combine
          \\raise #1.5 \\translate #(cons -0.5 0) \\musicglyph #\"accordion.dot\"
          """
        elif not txt <= 0:
            commandname += "M"
            command += """\\combine
          \\raise #1.5 \\musicglyph #\"accordion.dot\"
          """
    low = mxl_event.get_maybe_exist_named_child ('accordion-low')
    if low:
        commandname += "L"
        command += """\\combine
          \\raise #0.5 \musicglyph #\"accordion.dot\"
          """

    command += "\musicglyph #\"accordion.discant\""
    command = "\\markup { \\normalsize %s }" % command
    # Define the newly built command \accReg[H][MMM][L]
    additional_definitions[commandname] = "%s = %s" % (commandname, command)
    needed_additional_definitions.append (commandname)
    return "\\%s" % commandname

def musicxml_accordion_to_ly (mxl_event):
    txt = musicxml_accordion_to_markup (mxl_event)
    if txt:
        ev = musicexp.MarkEvent (txt)
        return ev
    return


def musicxml_rehearsal_to_ly_mark (mxl_event):
    text = mxl_event.get_text ()
    if not text:
        return
    # default is boxed rehearsal marks!
    encl = "box"
    if hasattr (mxl_event, 'enclosure'):
        encl = {"none": None, "square": "box", "circle": "circle" }.get (mxl_event.enclosure, None)
    if encl:
        text = "\\%s { %s }" % (encl, text)
    ev = musicexp.MarkEvent ("\\markup { %s }" % text)
    return ev

def musicxml_harp_pedals_to_ly (mxl_event):
    count = 0
    result = "\\harp-pedal #\""
    for t in mxl_event.get_named_children ('pedal-tuning'):
      alter = t.get_named_child ('pedal-alter')
      if alter:
        val = int (alter.get_text ().strip ())
        result += {1: "v", 0: "-", -1: "^"}.get (val, "")
      count += 1
      if count == 3:
        result += "|"
    ev = musicexp.MarkupEvent ()
    ev.contents = result + "\""
    return ev

def musicxml_eyeglasses_to_ly (mxl_event):
    needed_additional_definitions.append ("eyeglasses")
    return musicexp.MarkEvent ("\\markup { \\eyeglasses }")

def next_non_hash_index (lst, pos):
    pos += 1
    while pos < len (lst) and isinstance (lst[pos], musicxml.Hash_text):
        pos += 1
    return pos

def musicxml_metronome_to_ly (mxl_event):
    children = mxl_event.get_all_children ()
    if not children:
        return

    index = -1
    index = next_non_hash_index (children, index)
    if isinstance (children[index], musicxml.BeatUnit):
        # first form of metronome-mark, using unit and beats/min or other unit
        ev = musicexp.TempoMark ()
        if hasattr (mxl_event, 'parentheses'):
            ev.set_parentheses (mxl_event.parentheses == "yes")

        d = musicexp.Duration ()
        d.duration_log = musicxml.musicxml_duration_to_log (children[index].get_text ())
        index = next_non_hash_index (children, index)
        if isinstance (children[index], musicxml.BeatUnitDot):
            d.dots = 1
            index = next_non_hash_index (children, index)
        ev.set_base_duration (d)
        if isinstance (children[index], musicxml.BeatUnit):
            # Form "note = newnote"
            newd = musicexp.Duration ()
            newd.duration_log = musicxml.musicxml_duration_to_log (children[index].get_text ())
            index = next_non_hash_index (children, index)
            if isinstance (children[index], musicxml.BeatUnitDot):
                newd.dots = 1
                index = next_non_hash_index (children, index)
            ev.set_new_duration (newd)
        elif isinstance (children[index], musicxml.PerMinute):
            # Form "note = bpm"
            try:
                beats = int (children[index].get_text ())
                ev.set_beats_per_minute (beats)
            except ValueError:
                pass
        else:
            error_message (_ ("Unknown metronome mark, ignoring"))
            return
        return ev
    else:
        #TODO: Implement the other (more complex) way for tempo marks!
        error_message (_ ("Metronome marks with complex relations (<metronome-note> in MusicXML) are not yet implemented."))
        return

# translate directions into Events, possible values:
#   -) string  (MarkEvent with that command)
#   -) function (function(mxl_event) needs to return a full Event-derived object
#   -) (class, name)  (like string, only that a different class than MarkEvent is used)
directions_dict = {
    'accordion-registration' : musicxml_accordion_to_ly,
    'coda' : (musicexp.MusicGlyphMarkEvent, "coda"),
#     'damp' : ???
#     'damp-all' : ???
    'eyeglasses': musicxml_eyeglasses_to_ly,
    'harp-pedals' : musicxml_harp_pedals_to_ly,
#     'image' : ???
    'metronome' : musicxml_metronome_to_ly,
    'rehearsal' : musicxml_rehearsal_to_ly_mark,
#     'scordatura' : ???
    'segno' : (musicexp.MusicGlyphMarkEvent, "segno"),
    'words' : musicxml_words_to_lily_event,
}
directions_spanners = [ 'octave-shift', 'pedal', 'wedge', 'dashes', 'bracket' ]

def musicxml_direction_to_lily (n):
    # TODO: Handle the <staff> element!
    res = []
    # placement applies to all children!
    dir = None
    if hasattr (n, 'placement') and options.convert_directions:
        dir = musicxml_direction_to_indicator (n.placement)
    dirtype_children = []
    # TODO: The direction-type is used for grouping (e.g. dynamics with text),
    #       so we can't simply flatten them out!
    for dt in n.get_typed_children (musicxml.DirType):
        dirtype_children += dt.get_all_children ()

    for entry in dirtype_children:
        # backets, dashes, octave shifts. pedal marks, hairpins etc. are spanners:
        if entry.get_name() in directions_spanners:
            event = musicxml_spanner_to_lily_event (entry)
            if event:
                res.append (event)
            continue

        # now treat all the "simple" ones, that can be translated using the dict
        ev = None
        tmp_tp = directions_dict.get (entry.get_name (), None)
        if isinstance (tmp_tp, str): # string means MarkEvent
            ev = musicexp.MarkEvent (tmp_tp)
        elif isinstance (tmp_tp, tuple): # tuple means (EventClass, "text")
            ev = tmp_tp[0] (tmp_tp[1])
        elif tmp_tp:
            ev = tmp_tp (entry)
        if ev:
            # TODO: set the correct direction! Unfortunately, \mark in ly does
            #       not seem to support directions!
            ev.force_direction = dir
            res.append (ev)
            continue

        if entry.get_name () == "dynamics":
            for dynentry in entry.get_all_children ():
                ev = musicxml_dynamics_to_lily_event (dynentry)
                if ev:
                    res.append (ev)

    return res

def musicxml_frame_to_lily_event (frame):
    ev = musicexp.FretEvent ()
    ev.strings = frame.get_strings ()
    ev.frets = frame.get_frets ()
    #offset = frame.get_first_fret () - 1
    barre = []
    for fn in frame.get_named_children ('frame-note'):
        fret = fn.get_fret ()
        if fret <= 0:
            fret = "o"
        el = [ fn.get_string (), fret ]
        fingering = fn.get_fingering ()
        if fingering >= 0:
            el.append (fingering)
        ev.elements.append (el)
        b = fn.get_barre ()
        if b == 'start':
            barre[0] = el[0] # start string
            barre[2] = el[1] # fret
        elif b == 'stop':
            barre[1] = el[0] # end string
    if barre:
        ev.barre = barre
    return ev

def musicxml_harmony_to_lily (n):
    res = []
    for f in n.get_named_children ('frame'):
        ev = musicxml_frame_to_lily_event (f)
        if ev:
            res.append (ev)
    return res


notehead_styles_dict = {
    'slash': '\'slash',
    'triangle': '\'triangle',
    'diamond': '\'diamond',
    'square': '\'la', # TODO: Proper squared note head
    'cross': None, # TODO: + shaped note head
    'x': '\'cross',
    'circle-x': '\'xcircle',
    'inverted triangle': None, # TODO: Implement
    'arrow down': None, # TODO: Implement
    'arrow up': None, # TODO: Implement
    'slashed': None, # TODO: Implement
    'back slashed': None, # TODO: Implement
    'normal': None,
    'cluster': None, # TODO: Implement
    'none': '#f',
    'do': '\'do',
    're': '\'re',
    'mi': '\'mi',
    'fa': '\'fa',
    'so': None,
    'la': '\'la',
    'ti': '\'ti',
    }

def musicxml_notehead_to_lily (nh):
    styles = []

    # Notehead style
    style = notehead_styles_dict.get (nh.get_text ().strip (), None)
    style_elm = musicexp.NotestyleEvent ()
    if style:
        style_elm.style = style
    if hasattr (nh, 'filled'):
        style_elm.filled = (getattr (nh, 'filled') == "yes")
    if style_elm.style or (style_elm.filled != None):
        styles.append (style_elm)

    # parentheses
    if hasattr (nh, 'parentheses') and (nh.parentheses == "yes"):
        styles.append (musicexp.ParenthesizeEvent ())

    return styles

def musicxml_chordpitch_to_lily (mxl_cpitch):
    r = musicexp.ChordPitch ()
    r.alteration = mxl_cpitch.get_alteration ()
    r.step = musicxml_step_to_lily (mxl_cpitch.get_step ())
    return r

chordkind_dict = {
    'major': '5',
    'minor': 'm5',
    'augmented': 'aug5',
    'diminished': 'dim5',
        # Sevenths:
    'dominant': '7',
    'dominant-seventh': '7',
    'major-seventh': 'maj7',
    'minor-seventh': 'm7',
    'diminished-seventh': 'dim7',
    'augmented-seventh': 'aug7',
    'half-diminished': 'dim5m7',
    'major-minor': 'maj7m5',
        # Sixths:
    'major-sixth': '6',
    'minor-sixth': 'm6',
        # Ninths:
    'dominant-ninth': '9',
    'major-ninth': 'maj9',
    'minor-ninth': 'm9',
        # 11ths (usually as the basis for alteration):
    'dominant-11th': '11',
    'major-11th': 'maj11',
    'minor-11th': 'm11',
        # 13ths (usually as the basis for alteration):
    'dominant-13th': '13.11',
    'major-13th': 'maj13.11',
    'minor-13th': 'm13',
        # Suspended:
    'suspended-second': 'sus2',
    'suspended-fourth': 'sus4',
        # Functional sixths:
    # TODO
    #'Neapolitan': '???',
    #'Italian': '???',
    #'French': '???',
    #'German': '???',
        # Other:
    #'pedal': '???',(pedal-point bass)
    'power': '5^3',
    #'Tristan': '???',
    'other': '1',
    'none': None,
}

def musicxml_chordkind_to_lily (kind):
    res = chordkind_dict.get (kind, None)
    # Check for None, since a major chord is converted to ''
    if res == None:
        error_message (_ ("Unable to convert chord type %s to lilypond.") % kind)
    return res

def musicxml_harmony_to_lily_chordname (n):
    res = []
    root = n.get_maybe_exist_named_child ('root')
    if root:
        ev = musicexp.ChordNameEvent ()
        ev.root = musicxml_chordpitch_to_lily (root)
        kind = n.get_maybe_exist_named_child ('kind')
        if kind:
            ev.kind = musicxml_chordkind_to_lily (kind.get_text ())
            if not ev.kind:
                return res
        bass = n.get_maybe_exist_named_child ('bass')
        if bass:
            ev.bass = musicxml_chordpitch_to_lily (bass)
        inversion = n.get_maybe_exist_named_child ('inversion')
        if inversion:
            # TODO: LilyPond does not support inversions, does it?

            # Mail from Carl Sorensen on lilypond-devel, June 11, 2008:
            # 4. LilyPond supports the first inversion in the form of added
            # bass notes.  So the first inversion of C major would be c:/g.
            # To get the second inversion of C major, you would need to do
            # e:6-3-^5 or e:m6-^5.  However, both of these techniques
            # require you to know the chord and calculate either the fifth
            # pitch (for the first inversion) or the third pitch (for the
            # second inversion) so they may not be helpful for musicxml2ly.
            inversion_count = string.atoi (inversion.get_text ())
            if inversion_count == 1:
              # TODO: Calculate the bass note for the inversion...
              pass
            pass
        for deg in n.get_named_children ('degree'):
            d = musicexp.ChordModification ()
            d.type = deg.get_type ()
            d.step = deg.get_value ()
            d.alteration = deg.get_alter ()
            ev.add_modification (d)
        #TODO: convert the user-symbols attribute:
            #major: a triangle, like Unicode 25B3
            #minor: -, like Unicode 002D
            #augmented: +, like Unicode 002B
            #diminished: (degree), like Unicode 00B0
            #half-diminished: (o with slash), like Unicode 00F8
        if ev and ev.root:
            res.append (ev)

    return res

def musicxml_figured_bass_note_to_lily (n):
    res = musicexp.FiguredBassNote ()
    suffix_dict = { 'sharp' : "+",
                    'flat' : "-",
                    'natural' : "!",
                    'double-sharp' : "++",
                    'flat-flat' : "--",
                    'sharp-sharp' : "++",
                    'slash' : "/" }
    prefix = n.get_maybe_exist_named_child ('prefix')
    if prefix:
        res.set_prefix (suffix_dict.get (prefix.get_text (), ""))
    fnumber = n.get_maybe_exist_named_child ('figure-number')
    if fnumber:
        res.set_number (fnumber.get_text ())
    suffix = n.get_maybe_exist_named_child ('suffix')
    if suffix:
        res.set_suffix (suffix_dict.get (suffix.get_text (), ""))
    if n.get_maybe_exist_named_child ('extend'):
        # TODO: Implement extender lines (unfortunately, in lilypond you have
        #       to use \set useBassFigureExtenders = ##t, which turns them on
        #       globally, while MusicXML has a property for each note...
        #       I'm not sure there is a proper way to implement this cleanly
        #n.extend
        pass
    return res



def musicxml_figured_bass_to_lily (n):
    if not isinstance (n, musicxml.FiguredBass):
        return
    res = musicexp.FiguredBassEvent ()
    for i in n.get_named_children ('figure'):
        note = musicxml_figured_bass_note_to_lily (i)
        if note:
            res.append (note)
    dur = n.get_maybe_exist_named_child ('duration')
    if dur:
        # apply the duration to res
        length = Rational(int(dur.get_text()), n._divisions)*Rational(1,4)
        res.set_real_duration (length)
        duration = rational_to_lily_duration (length)
        if duration:
            res.set_duration (duration)
    if hasattr (n, 'parentheses') and n.parentheses == "yes":
        res.set_parentheses (True)
    return res

instrument_drumtype_dict = {
    'Acoustic Snare Drum': 'acousticsnare',
    'Side Stick': 'sidestick',
    'Open Triangle': 'opentriangle',
    'Mute Triangle': 'mutetriangle',
    'Tambourine': 'tambourine',
    'Bass Drum': 'bassdrum',
}

def musicxml_note_to_lily_main_event (n):
    pitch  = None
    duration = None
    event = None

    mxl_pitch = n.get_maybe_exist_typed_child (musicxml.Pitch)
    if mxl_pitch:
        pitch = musicxml_pitch_to_lily (mxl_pitch)
        event = musicexp.NoteEvent ()
        event.pitch = pitch

        acc = n.get_maybe_exist_named_child ('accidental')
        if acc:
            # let's not force accs everywhere.
            event.cautionary = acc.cautionary
            # TODO: Handle editorial accidentals
            # TODO: Handle the level-display setting for displaying brackets/parentheses

    elif n.get_maybe_exist_typed_child (musicxml.Unpitched):
	# Unpitched elements have display-step and can also have
	# display-octave.
	unpitched = n.get_maybe_exist_typed_child (musicxml.Unpitched)
	event = musicexp.NoteEvent ()
	event.pitch = musicxml_unpitched_to_lily (unpitched)

    elif n.get_maybe_exist_typed_child (musicxml.Rest):
        # rests can have display-octave and display-step, which are
        # treated like an ordinary note pitch
        rest = n.get_maybe_exist_typed_child (musicxml.Rest)
        event = musicexp.RestEvent ()
        if options.convert_rest_positions:
            pitch = musicxml_restdisplay_to_lily (rest)
            event.pitch = pitch

    elif n.instrument_name:
        event = musicexp.NoteEvent ()
        drum_type = instrument_drumtype_dict.get (n.instrument_name)
        if drum_type:
            event.drum_type = drum_type
        else:
            n.message (_ ("drum %s type unknown, please add to instrument_drumtype_dict") % n.instrument_name)
            event.drum_type = 'acousticsnare'

    else:
        n.message (_ ("cannot find suitable event"))

    if event:
        event.duration = musicxml_duration_to_lily (n)

    noteheads = n.get_named_children ('notehead')
    for nh in noteheads:
        styles = musicxml_notehead_to_lily (nh)
        for s in styles:
            event.add_associated_event (s)

    return event

def musicxml_lyrics_to_text (lyrics):
    # TODO: Implement text styles for lyrics syllables
    continued = False
    extended = False
    text = ''
    for e in lyrics.get_all_children ():
        if isinstance (e, musicxml.Syllabic):
            continued = e.continued ()
        elif isinstance (e, musicxml.Text):
            # We need to convert soft hyphens to -, otherwise the ascii codec as well
            # as lilypond will barf on that character
            text += string.replace( e.get_text(), u'\xad', '-' )
        elif isinstance (e, musicxml.Elision):
            if text:
                text += " "
            continued = False
            extended = False
        elif isinstance (e, musicxml.Extend):
            if text:
                text += " "
            extended = True

    if text == "-" and continued:
        return "--"
    elif text == "_" and extended:
        return "__"
    elif continued and text:
        return musicxml.escape_ly_output_string (text) + " --"
    elif continued:
        return "--"
    elif extended and text:
        return musicxml.escape_ly_output_string (text) + " __"
    elif extended:
        return "__"
    elif text:
        return musicxml.escape_ly_output_string (text)
    else:
        return ""

## TODO
class NegativeSkip:
    def __init__ (self, here, dest):
        self.here = here
        self.dest = dest

class LilyPondVoiceBuilder:
    def __init__ (self):
        self.elements = []
        self.pending_dynamics = []
        self.end_moment = Rational (0)
        self.begin_moment = Rational (0)
        self.pending_multibar = Rational (0)
        self.ignore_skips = False
        self.has_relevant_elements = False
        self.measure_length = Rational (4, 4)

    def _insert_multibar (self):
        layout_information.set_context_item ('Score', 'skipBars = ##t')
        r = musicexp.MultiMeasureRest ()
        lenfrac = self.measure_length
        r.duration = rational_to_lily_duration (lenfrac)
        r.duration.factor *= self.pending_multibar / lenfrac
        self.elements.append (r)
        self.begin_moment = self.end_moment
        self.end_moment = self.begin_moment + self.pending_multibar
        self.pending_multibar = Rational (0)

    def set_measure_length (self, mlen):
        if (mlen != self.measure_length) and self.pending_multibar:
            self._insert_multibar ()
        self.measure_length = mlen

    def add_multibar_rest (self, duration):
        self.pending_multibar += duration

    def set_duration (self, duration):
        self.end_moment = self.begin_moment + duration
    def current_duration (self):
        return self.end_moment - self.begin_moment

    def add_music (self, music, duration, relevant = True):
        assert isinstance (music, musicexp.Music)
        if self.pending_multibar > Rational (0):
            self._insert_multibar ()

        self.has_relevant_elements = self.has_relevant_elements or relevant
        self.elements.append (music)
        self.begin_moment = self.end_moment
        self.set_duration (duration)

        # Insert all pending dynamics right after the note/rest:
        if isinstance (music, musicexp.ChordEvent) and self.pending_dynamics:
            for d in self.pending_dynamics:
                music.append (d)
            self.pending_dynamics = []

    # Insert some music command that does not affect the position in the measure
    def add_command (self, command, relevant = True):
        assert isinstance (command, musicexp.Music)
        if self.pending_multibar > Rational (0):
            self._insert_multibar ()
        self.has_relevant_elements = self.has_relevant_elements or relevant
        self.elements.append (command)
    def add_barline (self, barline, relevant = False):
        # Insert only if we don't have a barline already
        # TODO: Implement proper merging of default barline and custom bar line
        has_relevant = self.has_relevant_elements
        if (not (self.elements) or
            not (isinstance (self.elements[-1], musicexp.BarLine)) or
            (self.pending_multibar > Rational (0))):
            self.add_music (barline, Rational (0))
        self.has_relevant_elements = has_relevant or relevant
    def add_partial (self, command):
        self.ignore_skips = True
        # insert the partial, but restore relevant_elements (partial is not relevant)
        relevant = self.has_relevant_elements
        self.add_command (command)
        self.has_relevant_elements = relevant

    def add_dynamics (self, dynamic):
        # store the dynamic item(s) until we encounter the next note/rest:
        self.pending_dynamics.append (dynamic)

    def add_bar_check (self, number):
        # re/store has_relevant_elements, so that a barline alone does not
        # trigger output for figured bass, chord names
        b = musicexp.BarLine ()
        b.bar_number = number
        self.add_barline (b)

    def jumpto (self, moment):
        current_end = self.end_moment + self.pending_multibar
        diff = moment - current_end

        if diff < Rational (0):
            error_message (_ ('Negative skip %s (from position %s to %s)') %
                             (diff, current_end, moment))
            diff = Rational (0)

        if diff > Rational (0) and not (self.ignore_skips and moment == 0):
            skip = musicexp.SkipEvent()
            duration_factor = 1
            duration_log = {1: 0, 2: 1, 4:2, 8:3, 16:4, 32:5, 64:6, 128:7, 256:8, 512:9}.get (diff.denominator (), -1)
            duration_dots = 0
            # TODO: Use the time signature for skips, too. Problem: The skip
            #       might not start at a measure boundary!
            if duration_log > 0: # denominator is a power of 2...
                if diff.numerator () == 3:
                    duration_log -= 1
                    duration_dots = 1
                else:
                    duration_factor = Rational (diff.numerator ())
            else:
                # for skips of a whole or more, simply use s1*factor
                duration_log = 0
                duration_factor = diff
            skip.duration.duration_log = duration_log
            skip.duration.factor = duration_factor
            skip.duration.dots = duration_dots

            evc = musicexp.ChordEvent ()
            evc.elements.append (skip)
            self.add_music (evc, diff, False)

        if diff > Rational (0) and moment == 0:
            self.ignore_skips = False

    def last_event_chord (self, starting_at):

        value = None

        # if the position matches, find the last ChordEvent, do not cross a bar line!
        at = len( self.elements ) - 1
        while (at >= 0 and
               not isinstance (self.elements[at], musicexp.ChordEvent) and
               not isinstance (self.elements[at], musicexp.BarLine)):
            at -= 1

        if (self.elements
            and at >= 0
            and isinstance (self.elements[at], musicexp.ChordEvent)
            and self.begin_moment == starting_at):
            value = self.elements[at]
        else:
            self.jumpto (starting_at)
            value = None
        return value

    def correct_negative_skip (self, goto):
        self.end_moment = goto
        self.begin_moment = goto
        evc = musicexp.ChordEvent ()
        self.elements.append (evc)


class VoiceData:
    def __init__ (self):
        self.voicename = None
        self.voicedata = None
        self.ly_voice = None
        self.figured_bass = None
        self.chordnames = None
        self.lyrics_dict = {}
        self.lyrics_order = []

def measure_length_from_attributes (attr, current_measure_length):
    len = attr.get_measure_length ()
    if not len:
        len = current_measure_length
    return len

def musicxml_voice_to_lily_voice (voice):
    tuplet_events = []
    modes_found = {}
    lyrics = {}
    return_value = VoiceData ()
    return_value.voicedata = voice

    # First pitch needed for relative mode (if selected in command-line options)
    first_pitch = None

    # Needed for melismata detection (ignore lyrics on those notes!):
    inside_slur = False
    is_tied = False
    is_chord = False
    is_beamed = False
    ignore_lyrics = False

    current_staff = None

    pending_figured_bass = []
    pending_chordnames = []

    # Make sure that the keys in the dict don't get reordered, since
    # we need the correct ordering of the lyrics stanzas! By default,
    # a dict will reorder its keys
    return_value.lyrics_order = voice.get_lyrics_numbers ()
    for k in return_value.lyrics_order:
        lyrics[k] = []

    voice_builder = LilyPondVoiceBuilder ()
    figured_bass_builder = LilyPondVoiceBuilder ()
    chordnames_builder = LilyPondVoiceBuilder ()
    current_measure_length = Rational (4, 4)
    voice_builder.set_measure_length (current_measure_length)

    for n in voice._elements:
        tie_started = False
        if n.get_name () == 'forward':
            continue
        staff = n.get_maybe_exist_named_child ('staff')
        if staff:
            staff = staff.get_text ()
            if current_staff and staff <> current_staff and not n.get_maybe_exist_named_child ('chord'):
                voice_builder.add_command (musicexp.StaffChange (staff))
            current_staff = staff

        if isinstance (n, musicxml.Partial) and n.partial > 0:
            a = musicxml_partial_to_lily (n.partial)
            if a:
                voice_builder.add_partial (a)
                figured_bass_builder.add_partial (a)
                chordnames_builder.add_partial (a)
            continue

        is_chord = n.get_maybe_exist_named_child ('chord')
        is_after_grace = (isinstance (n, musicxml.Note) and n.is_after_grace ());
        if not is_chord and not is_after_grace:
            try:
                voice_builder.jumpto (n._when)
                figured_bass_builder.jumpto (n._when)
                chordnames_builder.jumpto (n._when)
            except NegativeSkip, neg:
                voice_builder.correct_negative_skip (n._when)
                figured_bass_builder.correct_negative_skip (n._when)
                chordnames_builder.correct_negative_skip (n._when)
                n.message (_ ("Negative skip found: from %s to %s, difference is %s") % (neg.here, neg.dest, neg.dest - neg.here))

        if isinstance (n, musicxml.Barline):
            barlines = musicxml_barline_to_lily (n)
            for a in barlines:
                if isinstance (a, musicexp.BarLine):
                    voice_builder.add_barline (a)
                    figured_bass_builder.add_barline (a, False)
                    chordnames_builder.add_barline (a, False)
                elif isinstance (a, RepeatMarker) or isinstance (a, EndingMarker):
                    voice_builder.add_command (a)
                    figured_bass_builder.add_barline (a, False)
                    chordnames_builder.add_barline (a, False)
            continue


        if isinstance (n, musicxml.Print):
            for a in musicxml_print_to_lily (n):
                voice_builder.add_command (a, False)
            continue

        # Continue any multimeasure-rests before trying to add bar checks!
        # Don't handle new MM rests yet, because for them we want bar checks!
        rest = n.get_maybe_exist_typed_child (musicxml.Rest)
        if (rest and rest.is_whole_measure ()
                 and voice_builder.pending_multibar > Rational (0)):
            voice_builder.add_multibar_rest (n._duration)
            continue


        # print a bar check at the beginning of each measure!
        if n.is_first () and n._measure_position == Rational (0) and n != voice._elements[0]:
            try:
                num = int (n.get_parent ().number)
            except ValueError:
                num = 0
            if num > 0:
                voice_builder.add_bar_check (num)
                figured_bass_builder.add_bar_check (num)
                chordnames_builder.add_bar_check (num)

        # Start any new multimeasure rests
        if (rest and rest.is_whole_measure ()):
            voice_builder.add_multibar_rest (n._duration)
            continue


        if isinstance (n, musicxml.Direction):
            for a in musicxml_direction_to_lily (n):
                if a.wait_for_note ():
                    voice_builder.add_dynamics (a)
                else:
                    voice_builder.add_command (a)
            continue

        if isinstance (n, musicxml.Harmony):
            for a in musicxml_harmony_to_lily (n):
                if a.wait_for_note ():
                    voice_builder.add_dynamics (a)
                else:
                    voice_builder.add_command (a)
            for a in musicxml_harmony_to_lily_chordname (n):
                pending_chordnames.append (a)
            continue

        if isinstance (n, musicxml.FiguredBass):
            a = musicxml_figured_bass_to_lily (n)
            if a:
                pending_figured_bass.append (a)
            continue

        if isinstance (n, musicxml.Attributes):
            for a in musicxml_attributes_to_lily (n):
                voice_builder.add_command (a)
            measure_length = measure_length_from_attributes (n, current_measure_length)
            if current_measure_length != measure_length:
                current_measure_length = measure_length
                voice_builder.set_measure_length (current_measure_length)
            continue

        if not n.__class__.__name__ == 'Note':
            n.message (_ ('unexpected %s; expected %s or %s or %s') % (n, 'Note', 'Attributes', 'Barline'))
            continue

        main_event = musicxml_note_to_lily_main_event (n)
        if main_event and not first_pitch:
            first_pitch = main_event.pitch
        # ignore lyrics for notes inside a slur, tie, chord or beam
        ignore_lyrics = inside_slur or is_tied or is_chord or is_beamed

        if main_event and hasattr (main_event, 'drum_type') and main_event.drum_type:
            modes_found['drummode'] = True

        ev_chord = voice_builder.last_event_chord (n._when)
        if not ev_chord:
            ev_chord = musicexp.ChordEvent()
            voice_builder.add_music (ev_chord, n._duration)

        # For grace notes:
        grace = n.get_maybe_exist_typed_child (musicxml.Grace)
        if n.is_grace ():
            is_after_grace = ev_chord.has_elements () or n.is_after_grace ();
            is_chord = n.get_maybe_exist_typed_child (musicxml.Chord)

            grace_chord = None

            # after-graces and other graces use different lists; Depending on
            # whether we have a chord or not, obtain either a new ChordEvent or
            # the previous one to create a chord
            if is_after_grace:
                if ev_chord.after_grace_elements and n.get_maybe_exist_typed_child (musicxml.Chord):
                    grace_chord = ev_chord.after_grace_elements.get_last_event_chord ()
                if not grace_chord:
                    grace_chord = musicexp.ChordEvent ()
                    ev_chord.append_after_grace (grace_chord)
            elif n.is_grace ():
                if ev_chord.grace_elements and n.get_maybe_exist_typed_child (musicxml.Chord):
                    grace_chord = ev_chord.grace_elements.get_last_event_chord ()
                if not grace_chord:
                    grace_chord = musicexp.ChordEvent ()
                    ev_chord.append_grace (grace_chord)

            if hasattr (grace, 'slash') and not is_after_grace:
                # TODO: use grace_type = "appoggiatura" for slurred grace notes
                if grace.slash == "yes":
                    ev_chord.grace_type = "acciaccatura"
            # now that we have inserted the chord into the grace music, insert
            # everything into that chord instead of the ev_chord
            ev_chord = grace_chord
            ev_chord.append (main_event)
            ignore_lyrics = True
        else:
            ev_chord.append (main_event)
            # When a note/chord has grace notes (duration==0), the duration of the
            # event chord is not yet known, but the event chord was already added
            # with duration 0. The following correct this when we hit the real note!
            if voice_builder.current_duration () == 0 and n._duration > 0:
                voice_builder.set_duration (n._duration)

        # if we have a figured bass, set its voice builder to the correct position
        # and insert the pending figures
        if pending_figured_bass:
            try:
                figured_bass_builder.jumpto (n._when)
            except NegativeSkip, neg:
                pass
            for fb in pending_figured_bass:
                # if a duration is given, use that, otherwise the one of the note
                dur = fb.real_duration
                if not dur:
                    dur = ev_chord.get_length ()
                if not fb.duration:
                    fb.duration = ev_chord.get_duration ()
                figured_bass_builder.add_music (fb, dur)
            pending_figured_bass = []

        if pending_chordnames:
            try:
                chordnames_builder.jumpto (n._when)
            except NegativeSkip, neg:
                pass
            for cn in pending_chordnames:
                # Assign the duration of the EventChord
                cn.duration = ev_chord.get_duration ()
                chordnames_builder.add_music (cn, ev_chord.get_length ())
            pending_chordnames = []

        notations_children = n.get_typed_children (musicxml.Notations)
        tuplet_event = None
        span_events = []

        # The <notation> element can have the following children (+ means implemented, ~ partially, - not):
        # +tied | +slur | +tuplet | glissando | slide |
        #    ornaments | technical | articulations | dynamics |
        #    +fermata | arpeggiate | non-arpeggiate |
        #    accidental-mark | other-notation
        for notations in notations_children:
            for tuplet_event in notations.get_tuplets():
                time_mod = n.get_maybe_exist_typed_child (musicxml.Time_modification)
                tuplet_events.append ((ev_chord, tuplet_event, time_mod))

            # First, close all open slurs, only then start any new slur
            # TODO: Record the number of the open slur to dtermine the correct
            #       closing slur!
            endslurs = [s for s in notations.get_named_children ('slur')
                if s.get_type () in ('stop')]
            if endslurs and not inside_slur:
                endslurs[0].message (_ ('Encountered closing slur, but no slur is open'))
            elif endslurs:
                if len (endslurs) > 1:
                    endslurs[0].message (_ ('Cannot have two simultaneous (closing) slurs'))
                # record the slur status for the next note in the loop
                inside_slur = False
                lily_ev = musicxml_spanner_to_lily_event (endslurs[0])
                ev_chord.append (lily_ev)

            startslurs = [s for s in notations.get_named_children ('slur')
                if s.get_type () in ('start')]
            if startslurs and inside_slur:
                startslurs[0].message (_ ('Cannot have a slur inside another slur'))
            elif startslurs:
                if len (startslurs) > 1:
                    startslurs[0].message (_ ('Cannot have two simultaneous slurs'))
                # record the slur status for the next note in the loop
                inside_slur = True
                lily_ev = musicxml_spanner_to_lily_event (startslurs[0])
                ev_chord.append (lily_ev)


            if not grace:
                mxl_tie = notations.get_tie ()
                if mxl_tie and mxl_tie.type == 'start':
                    ev_chord.append (musicexp.TieEvent ())
                    is_tied = True
                    tie_started = True
                else:
                    is_tied = False

            fermatas = notations.get_named_children ('fermata')
            for a in fermatas:
                ev = musicxml_fermata_to_lily_event (a)
                if ev:
                    ev_chord.append (ev)

            arpeggiate = notations.get_named_children ('arpeggiate')
            for a in arpeggiate:
                ev = musicxml_arpeggiate_to_lily_event (a)
                if ev:
                    ev_chord.append (ev)

            arpeggiate = notations.get_named_children ('non-arpeggiate')
            for a in arpeggiate:
                ev = musicxml_nonarpeggiate_to_lily_event (a)
                if ev:
                    ev_chord.append (ev)

            glissandos = notations.get_named_children ('glissando')
            glissandos += notations.get_named_children ('slide')
            for a in glissandos:
                ev = musicxml_spanner_to_lily_event (a)
                if ev:
                    ev_chord.append (ev)

            # accidental-marks are direct children of <notation>!
            for a in notations.get_named_children ('accidental-mark'):
                ev = musicxml_articulation_to_lily_event (a)
                if ev:
                    ev_chord.append (ev)

            # Articulations can contain the following child elements:
            #         accent | strong-accent | staccato | tenuto |
            #         detached-legato | staccatissimo | spiccato |
            #         scoop | plop | doit | falloff | breath-mark |
            #         caesura | stress | unstress
            # Technical can contain the following child elements:
            #         up-bow | down-bow | harmonic | open-string |
            #         thumb-position | fingering | pluck | double-tongue |
            #         triple-tongue | stopped | snap-pizzicato | fret |
            #         string | hammer-on | pull-off | bend | tap | heel |
            #         toe | fingernails | other-technical
            # Ornaments can contain the following child elements:
            #         trill-mark | turn | delayed-turn | inverted-turn |
            #         shake | wavy-line | mordent | inverted-mordent |
            #         schleifer | tremolo | other-ornament, accidental-mark
            ornaments = notations.get_named_children ('ornaments')
            ornaments += notations.get_named_children ('articulations')
            ornaments += notations.get_named_children ('technical')

            for a in ornaments:
                for ch in a.get_all_children ():
                    ev = musicxml_articulation_to_lily_event (ch)
                    if ev:
                        ev_chord.append (ev)

            dynamics = notations.get_named_children ('dynamics')
            for a in dynamics:
                for ch in a.get_all_children ():
                    ev = musicxml_dynamics_to_lily_event (ch)
                    if ev:
                        ev_chord.append (ev)


        mxl_beams = [b for b in n.get_named_children ('beam')
                     if (b.get_type () in ('begin', 'end')
                         and b.is_primary ())]
        if mxl_beams and not conversion_settings.ignore_beaming:
            beam_ev = musicxml_spanner_to_lily_event (mxl_beams[0])
            if beam_ev:
                ev_chord.append (beam_ev)
                if beam_ev.span_direction == -1: # beam and thus melisma starts here
                    is_beamed = True
                elif beam_ev.span_direction == 1: # beam and thus melisma ends here
                    is_beamed = False

        # Extract the lyrics
        if not rest and not ignore_lyrics:
            note_lyrics_processed = []
            note_lyrics_elements = n.get_typed_children (musicxml.Lyric)
            for l in note_lyrics_elements:
                if l.get_number () < 0:
                    for k in lyrics.keys ():
                        lyrics[k].append (musicxml_lyrics_to_text (l))
                        note_lyrics_processed.append (k)
                else:
                    lyrics[l.number].append(musicxml_lyrics_to_text (l))
                    note_lyrics_processed.append (l.number)
            for lnr in lyrics.keys ():
                if not lnr in note_lyrics_processed:
                    lyrics[lnr].append ("\skip4")

        # Assume that a <tie> element only lasts for one note.
        # This might not be correct MusicXML interpretation, but works for
        # most cases and fixes broken files, which have the end tag missing
        if is_tied and not tie_started:
            is_tied = False

    ## force trailing mm rests to be written out.
    voice_builder.add_music (musicexp.ChordEvent (), Rational (0))

    ly_voice = group_tuplets (voice_builder.elements, tuplet_events)
    ly_voice = group_repeats (ly_voice)

    seq_music = musicexp.SequentialMusic ()

    if 'drummode' in modes_found.keys ():
        ## \key <pitch> barfs in drummode.
        ly_voice = [e for e in ly_voice
                    if not isinstance(e, musicexp.KeySignatureChange)]

    seq_music.elements = ly_voice
    for k in lyrics.keys ():
        return_value.lyrics_dict[k] = musicexp.Lyrics ()
        return_value.lyrics_dict[k].lyrics_syllables = lyrics[k]


    if len (modes_found) > 1:
       error_message (_ ('cannot simultaneously have more than one mode: %s') % modes_found.keys ())

    if options.relative:
        v = musicexp.RelativeMusic ()
        v.element = seq_music
        v.basepitch = first_pitch
        seq_music = v

    return_value.ly_voice = seq_music
    for mode in modes_found.keys ():
        v = musicexp.ModeChangingMusicWrapper()
        v.element = seq_music
        v.mode = mode
        return_value.ly_voice = v

    # create \figuremode { figured bass elements }
    if figured_bass_builder.has_relevant_elements:
        fbass_music = musicexp.SequentialMusic ()
        fbass_music.elements = group_repeats (figured_bass_builder.elements)
        v = musicexp.ModeChangingMusicWrapper()
        v.mode = 'figuremode'
        v.element = fbass_music
        return_value.figured_bass = v

    # create \chordmode { chords }
    if chordnames_builder.has_relevant_elements:
        cname_music = musicexp.SequentialMusic ()
        cname_music.elements = group_repeats (chordnames_builder.elements)
        v = musicexp.ModeChangingMusicWrapper()
        v.mode = 'chordmode'
        v.element = cname_music
        return_value.chordnames = v

    return return_value

def musicxml_id_to_lily (id):
    digits = ['Zero', 'One', 'Two', 'Three', 'Four', 'Five',
              'Six', 'Seven', 'Eight', 'Nine', 'Ten']

    for digit in digits:
        d = digits.index (digit)
        id = re.sub ('%d' % d, digit, id)

    id = re.sub  ('[^a-zA-Z]', 'X', id)
    return id

def musicxml_pitch_to_lily (mxl_pitch):
    p = musicexp.Pitch ()
    p.alteration = mxl_pitch.get_alteration ()
    p.step = musicxml_step_to_lily (mxl_pitch.get_step ())
    p.octave = mxl_pitch.get_octave () - 4
    return p

def musicxml_unpitched_to_lily (mxl_unpitched):
    p = None
    step = mxl_unpitched.get_step ()
    if step:
	p = musicexp.Pitch ()
	p.step = musicxml_step_to_lily (step)
    octave = mxl_unpitched.get_octave ()
    if octave and p:
	p.octave = octave - 4
    return p

def musicxml_restdisplay_to_lily (mxl_rest):
    p = None
    step = mxl_rest.get_step ()
    if step:
        p = musicexp.Pitch ()
        p.step = musicxml_step_to_lily (step)
    octave = mxl_rest.get_octave ()
    if octave and p:
        p.octave = octave - 4
    return p

def voices_in_part (part):
    """Return a Name -> Voice dictionary for PART"""
    part.interpret ()
    part.extract_voices ()
    voices = part.get_voices ()
    part_info = part.get_staff_attributes ()

    return (voices, part_info)

def voices_in_part_in_parts (parts):
    """return a Part -> Name -> Voice dictionary"""
    # don't crash if p doesn't have an id (that's invalid MusicXML,
    # but such files are out in the wild!
    dictionary = {}
    for p in parts:
        voices = voices_in_part (p)
        if (hasattr (p, "id")):
             dictionary[p.id] = voices
        else:
             # TODO: extract correct part id from other sources
             dictionary[None] = voices
    return dictionary;


def get_all_voices (parts):
    all_voices = voices_in_part_in_parts (parts)

    all_ly_voices = {}
    all_ly_staffinfo = {}
    for p, (name_voice, staff_info) in all_voices.items ():

        part_ly_voices = {}
        for n, v in name_voice.items ():
            progress (_ ("Converting to LilyPond expressions..."))
            # musicxml_voice_to_lily_voice returns (lily_voice, {nr->lyrics, nr->lyrics})
            part_ly_voices[n] = musicxml_voice_to_lily_voice (v)

        all_ly_voices[p] = part_ly_voices
        all_ly_staffinfo[p] = staff_info

    return (all_ly_voices, all_ly_staffinfo)


def option_parser ():
    p = ly.get_option_parser (usage = _ ("musicxml2ly [OPTION]... FILE.xml"),
                             description =
_ ("""Convert MusicXML from FILE.xml to LilyPond input.
If the given filename is -, musicxml2ly reads from the command line.
"""), add_help_option=False)

    p.add_option("-h", "--help",
                 action="help",
                 help=_ ("show this help and exit"))

    p.version = ('''%prog (LilyPond) 2.14.2\n\n'''
+
_ ("""Copyright (c) 2005--2011 by
    Han-Wen Nienhuys <hanwen@xs4all.nl>,
    Jan Nieuwenhuizen <janneke@gnu.org> and
    Reinhold Kainhofer <reinhold@kainhofer.com>
"""
+
"""
This program is free software.  It is covered by the GNU General Public
License and you are welcome to change it and/or distribute copies of it
under certain conditions.  Invoke as `%s --warranty' for more
information.""") % 'lilypond')

    p.add_option("--version",
                 action="version",
                 help=_ ("show version number and exit"))

    p.add_option ('-v', '--verbose',
                  action = "store_true",
                  dest = 'verbose',
                  help = _ ("be verbose"))

    p.add_option ('', '--lxml',
                  action = "store_true",
                  default = False,
                  dest = "use_lxml",
                  help = _ ("use lxml.etree; uses less memory and cpu time"))

    p.add_option ('-z', '--compressed',
                  action = "store_true",
                  dest = 'compressed',
                  default = False,
                  help = _ ("input file is a zip-compressed MusicXML file"))

    p.add_option ('-r', '--relative',
                  action = "store_true",
                  default = True,
                  dest = "relative",
                  help = _ ("convert pitches in relative mode (default)"))

    p.add_option ('-a', '--absolute',
                  action = "store_false",
                  dest = "relative",
                  help = _ ("convert pitches in absolute mode"))

    p.add_option ('-l', '--language',
                  metavar = _ ("LANG"),
                  action = "store",
                  help = _ ("use LANG for pitch names, e.g. 'deutsch' for note names in German"))

    p.add_option ('--nd', '--no-articulation-directions',
                  action = "store_false",
                  default = True,
                  dest = "convert_directions",
                  help = _ ("do not convert directions (^, _ or -) for articulations, dynamics, etc."))

    p.add_option ('--nrp', '--no-rest-positions',
                  action = "store_false",
                  default = True,
                  dest = "convert_rest_positions",
                  help = _ ("do not convert exact vertical positions of rests"))

    p.add_option ('--npl', '--no-page-layout',
                  action = "store_false",
                  default = True,
                  dest = "convert_page_layout",
                  help = _ ("do not convert the exact page layout and breaks"))

    p.add_option ('--no-beaming',
                  action = "store_false",
                  default = True,
                  dest = "convert_beaming",
                  help = _ ("do not convert beaming information, use lilypond's automatic beaming instead"))

    p.add_option ('-o', '--output',
                  metavar = _ ("FILE"),
                  action = "store",
                  default = None,
                  type = 'string',
                  dest = 'output_name',
                  help = _ ("set output filename to FILE, stdout if -"))
    p.add_option_group ('',
                        description = (
            _ ("Report bugs via %s")
            % 'http://post.gmane.org/post.php'
            '?group=gmane.comp.gnu.lilypond.bugs') + '\n')
    return p

def music_xml_voice_name_to_lily_name (part_id, name):
    str = "Part%sVoice%s" % (part_id, name)
    return musicxml_id_to_lily (str)

def music_xml_lyrics_name_to_lily_name (part_id, name, lyricsnr):
    str = "Part%sVoice%sLyrics%s" % (part_id, name, lyricsnr)
    return musicxml_id_to_lily (str)

def music_xml_figuredbass_name_to_lily_name (part_id, voicename):
    str = "Part%sVoice%sFiguredBass" % (part_id, voicename)
    return musicxml_id_to_lily (str)

def music_xml_chordnames_name_to_lily_name (part_id, voicename):
    str = "Part%sVoice%sChords" % (part_id, voicename)
    return musicxml_id_to_lily (str)

def print_voice_definitions (printer, part_list, voices):
    for part in part_list:
        part_id = part.id
        nv_dict = voices.get (part_id, {})
        for (name, voice) in nv_dict.items ():
            k = music_xml_voice_name_to_lily_name (part_id, name)
            printer.dump ('%s = ' % k)
            voice.ly_voice.print_ly (printer)
            printer.newline()
            if voice.chordnames:
                cnname = music_xml_chordnames_name_to_lily_name (part_id, name)
                printer.dump ('%s = ' % cnname )
                voice.chordnames.print_ly (printer)
                printer.newline()
            for l in voice.lyrics_order:
                lname = music_xml_lyrics_name_to_lily_name (part_id, name, l)
                printer.dump ('%s = ' % lname )
                voice.lyrics_dict[l].print_ly (printer)
                printer.newline()
            if voice.figured_bass:
                fbname = music_xml_figuredbass_name_to_lily_name (part_id, name)
                printer.dump ('%s = ' % fbname )
                voice.figured_bass.print_ly (printer)
                printer.newline()


def uniq_list (l):
    return dict ([(elt,1) for elt in l]).keys ()

# format the information about the staff in the form
#     [staffid,
#         [
#            [voiceid1, [lyricsid11, lyricsid12,...], figuredbassid1],
#            [voiceid2, [lyricsid21, lyricsid22,...], figuredbassid2],
#            ...
#         ]
#     ]
# raw_voices is of the form [(voicename, lyricsids, havefiguredbass)*]
def format_staff_info (part_id, staff_id, raw_voices):
    voices = []
    for (v, lyricsids, figured_bass, chordnames) in raw_voices:
        voice_name = music_xml_voice_name_to_lily_name (part_id, v)
        voice_lyrics = [music_xml_lyrics_name_to_lily_name (part_id, v, l)
                   for l in lyricsids]
        figured_bass_name = ''
        if figured_bass:
            figured_bass_name = music_xml_figuredbass_name_to_lily_name (part_id, v)
        chordnames_name = ''
        if chordnames:
            chordnames_name = music_xml_chordnames_name_to_lily_name (part_id, v)
        voices.append ([voice_name, voice_lyrics, figured_bass_name, chordnames_name])
    return [staff_id, voices]

def update_score_setup (score_structure, part_list, voices):

    for part_definition in part_list:
        part_id = part_definition.id
        nv_dict = voices.get (part_id)
        if not nv_dict:
            error_message (_ ('unknown part in part-list: %s') % part_id)
            continue

        staves = reduce (lambda x,y: x+ y,
                [voice.voicedata._staves.keys ()
                 for voice in nv_dict.values ()],
                [])
        staves_info = []
        if len (staves) > 1:
            staves_info = []
            staves = uniq_list (staves)
            staves.sort ()
            for s in staves:
                thisstaff_raw_voices = [(voice_name, voice.lyrics_order, voice.figured_bass, voice.chordnames)
                    for (voice_name, voice) in nv_dict.items ()
                    if voice.voicedata._start_staff == s]
                staves_info.append (format_staff_info (part_id, s, thisstaff_raw_voices))
        else:
            thisstaff_raw_voices = [(voice_name, voice.lyrics_order, voice.figured_bass, voice.chordnames)
                for (voice_name, voice) in nv_dict.items ()]
            staves_info.append (format_staff_info (part_id, None, thisstaff_raw_voices))
        score_structure.set_part_information (part_id, staves_info)

# Set global values in the \layout block, like auto-beaming etc.
def update_layout_information ():
    if not conversion_settings.ignore_beaming and layout_information:
        layout_information.set_context_item ('Score', 'autoBeaming = ##f')

def print_ly_preamble (printer, filename):
    printer.dump_version ()
    printer.print_verbatim ('%% automatically converted from %s\n' % filename)

def print_ly_additional_definitions (printer, filename):
    if needed_additional_definitions:
        printer.newline ()
        printer.print_verbatim ('%% additional definitions required by the score:')
        printer.newline ()
    for a in set(needed_additional_definitions):
        printer.print_verbatim (additional_definitions.get (a, ''))
        printer.newline ()
    printer.newline ()

# Read in the tree from the given I/O object (either file or string) and
# demarshall it using the classes from the musicxml.py file
def read_xml (io_object, use_lxml):
    if use_lxml:
        import lxml.etree
        tree = lxml.etree.parse (io_object)
        mxl_tree = musicxml.lxml_demarshal_node (tree.getroot ())
        return mxl_tree
    else:
        from xml.dom import minidom, Node
        doc = minidom.parse(io_object)
        node = doc.documentElement
        return musicxml.minidom_demarshal_node (node)
    return None


def read_musicxml (filename, compressed, use_lxml):
    raw_string = None
    if compressed:
        if filename == "-":
             progress (_ ("Input is compressed, extracting raw MusicXML data from stdin") )
             z = zipfile.ZipFile (sys.stdin)
        else:
            progress (_ ("Input file %s is compressed, extracting raw MusicXML data") % filename)
            z = zipfile.ZipFile (filename, "r")
        container_xml = z.read ("META-INF/container.xml")
        if not container_xml:
            return None
        container = read_xml (StringIO.StringIO (container_xml), use_lxml)
        if not container:
            return None
        rootfiles = container.get_maybe_exist_named_child ('rootfiles')
        if not rootfiles:
            return None
        rootfile_list = rootfiles.get_named_children ('rootfile')
        mxml_file = None
        if len (rootfile_list) > 0:
            mxml_file = getattr (rootfile_list[0], 'full-path', None)
        if mxml_file:
            raw_string = z.read (mxml_file)

    if raw_string:
        io_object = StringIO.StringIO (raw_string)
    elif filename == "-":
        io_object = sys.stdin
    else:
        io_object = filename

    return read_xml (io_object, use_lxml)


def convert (filename, options):
    if filename == "-":
        progress (_ ("Reading MusicXML from Standard input ...") )
    else:
        progress (_ ("Reading MusicXML from %s ...") % filename)

    tree = read_musicxml (filename, options.compressed, options.use_lxml)
    score_information = extract_score_information (tree)
    paper_information = extract_paper_information (tree)

    parts = tree.get_typed_children (musicxml.Part)
    (voices, staff_info) = get_all_voices (parts)

    score = None
    mxl_pl = tree.get_maybe_exist_typed_child (musicxml.Part_list)
    if mxl_pl:
        score = extract_score_structure (mxl_pl, staff_info)
        part_list = mxl_pl.get_named_children ("score-part")

    # score information is contained in the <work>, <identification> or <movement-title> tags
    update_score_setup (score, part_list, voices)
    # After the conversion, update the list of settings for the \layout block
    update_layout_information ()

    if not options.output_name:
        options.output_name = os.path.basename (filename)
        options.output_name = os.path.splitext (options.output_name)[0]
    elif re.match (".*\.ly", options.output_name):
        options.output_name = os.path.splitext (options.output_name)[0]


    #defs_ly_name = options.output_name + '-defs.ly'
    if (options.output_name == "-"):
      output_ly_name = 'Standard output'
    else:
      output_ly_name = options.output_name + '.ly'

    progress (_ ("Output to `%s'") % output_ly_name)
    printer = musicexp.Output_printer()
    #progress (_ ("Output to `%s'") % defs_ly_name)
    if (options.output_name == "-"):
      printer.set_file (codecs.getwriter ("utf-8")(sys.stdout))
    else:
      printer.set_file (codecs.open (output_ly_name, 'wb', encoding='utf-8'))
    print_ly_preamble (printer, filename)
    print_ly_additional_definitions (printer, filename)
    if score_information:
        score_information.print_ly (printer)
    if paper_information and conversion_settings.convert_page_layout:
        paper_information.print_ly (printer)
    if layout_information:
        layout_information.print_ly (printer)
    print_voice_definitions (printer, part_list, voices)

    printer.newline ()
    printer.dump ("% The score definition")
    printer.newline ()
    score.print_ly (printer)
    printer.newline ()

    return voices

def get_existing_filename_with_extension (filename, ext):
    if os.path.exists (filename):
        return filename
    newfilename = filename + "." + ext
    if os.path.exists (newfilename):
        return newfilename;
    newfilename = filename + ext
    if os.path.exists (newfilename):
        return newfilename;
    return ''

def main ():
    opt_parser = option_parser()

    global options
    (options, args) = opt_parser.parse_args ()
    if not args:
        opt_parser.print_usage()
        sys.exit (2)

    if options.language:
        musicexp.set_pitch_language (options.language)
        needed_additional_definitions.append (options.language)
        additional_definitions[options.language] = "\\language \"%s\"\n" % options.language
    conversion_settings.ignore_beaming = not options.convert_beaming
    conversion_settings.convert_page_layout = options.convert_page_layout

    # Allow the user to leave out the .xml or xml on the filename
    basefilename = args[0].decode('utf-8')
    if basefilename == "-": # Read from stdin
        filename = "-"
    else:
        filename = get_existing_filename_with_extension (basefilename, "xml")
        if not filename:
            filename = get_existing_filename_with_extension (basefilename, "mxl")
            options.compressed = True
    if filename and filename.endswith ("mxl"):
        options.compressed = True

    if filename and (filename == "-" or os.path.exists (filename)):
        voices = convert (filename, options)
    else:
        progress (_ ("Unable to find input file %s") % basefilename)

if __name__ == '__main__':
    main()