~bzr-pqm/bzr/bzr.dev

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
2948
2949
2950
2951
2952
2953
2954
2955
2956
2957
2958
2959
2960
2961
2962
2963
2964
2965
2966
2967
2968
2969
2970
2971
2972
2973
2974
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984
2985
2986
2987
2988
2989
2990
2991
2992
2993
2994
2995
2996
2997
2998
2999
3000
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021
3022
3023
3024
3025
3026
3027
3028
3029
3030
3031
3032
3033
3034
3035
3036
3037
3038
3039
3040
3041
3042
3043
3044
3045
3046
3047
3048
3049
3050
3051
3052
3053
3054
3055
3056
3057
3058
3059
3060
3061
3062
3063
3064
3065
3066
3067
3068
3069
3070
3071
3072
3073
3074
3075
3076
3077
3078
3079
3080
3081
3082
3083
3084
3085
3086
3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117
3118
3119
3120
3121
3122
3123
3124
3125
3126
3127
3128
3129
3130
3131
3132
3133
3134
3135
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145
3146
3147
3148
3149
3150
3151
3152
3153
3154
3155
3156
3157
3158
3159
3160
3161
3162
3163
3164
3165
3166
3167
3168
3169
3170
3171
3172
3173
3174
3175
3176
3177
3178
3179
3180
3181
3182
3183
3184
3185
3186
3187
3188
3189
3190
3191
3192
3193
3194
3195
3196
3197
3198
3199
3200
3201
3202
3203
3204
3205
3206
3207
3208
3209
3210
3211
3212
3213
3214
3215
3216
3217
3218
3219
3220
3221
3222
3223
3224
3225
3226
3227
3228
3229
3230
3231
3232
3233
3234
3235
3236
3237
3238
3239
3240
3241
3242
3243
3244
3245
3246
3247
3248
3249
3250
3251
3252
3253
3254
3255
3256
3257
3258
3259
3260
3261
3262
3263
3264
3265
3266
3267
3268
3269
3270
3271
3272
3273
3274
3275
3276
3277
3278
3279
3280
3281
3282
3283
3284
3285
3286
3287
3288
3289
3290
3291
3292
3293
3294
3295
3296
3297
3298
3299
3300
3301
3302
3303
3304
3305
3306
3307
3308
3309
3310
3311
3312
3313
3314
3315
3316
3317
3318
3319
3320
3321
3322
3323
3324
3325
3326
3327
3328
3329
3330
3331
3332
3333
3334
3335
3336
3337
3338
3339
3340
3341
3342
3343
3344
3345
3346
3347
3348
3349
3350
3351
3352
3353
3354
3355
3356
3357
3358
3359
3360
3361
3362
3363
# Copyright (C) 2005-2011 Canonical Ltd
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

"""Exceptions for bzr, and reporting of them.
"""

from __future__ import absolute_import

# TODO: is there any value in providing the .args field used by standard
# python exceptions?   A list of values with no names seems less useful
# to me.

# TODO: Perhaps convert the exception to a string at the moment it's
# constructed to make sure it will succeed.  But that says nothing about
# exceptions that are never raised.

# TODO: selftest assertRaises should probably also check that every error
# raised can be formatted as a string successfully, and without giving
# 'unprintable'.


# return codes from the bzr program
EXIT_OK = 0
EXIT_ERROR = 3
EXIT_INTERNAL_ERROR = 4


class BzrError(StandardError):
    """
    Base class for errors raised by bzrlib.

    :cvar internal_error: if True this was probably caused by a bzr bug and
        should be displayed with a traceback; if False (or absent) this was
        probably a user or environment error and they don't need the gory
        details.  (That can be overridden by -Derror on the command line.)

    :cvar _fmt: Format string to display the error; this is expanded
        by the instance's dict.
    """

    internal_error = False

    def __init__(self, msg=None, **kwds):
        """Construct a new BzrError.

        There are two alternative forms for constructing these objects.
        Either a preformatted string may be passed, or a set of named
        arguments can be given.  The first is for generic "user" errors which
        are not intended to be caught and so do not need a specific subclass.
        The second case is for use with subclasses that provide a _fmt format
        string to print the arguments.

        Keyword arguments are taken as parameters to the error, which can
        be inserted into the format string template.  It's recommended
        that subclasses override the __init__ method to require specific
        parameters.

        :param msg: If given, this is the literal complete text for the error,
           not subject to expansion. 'msg' is used instead of 'message' because
           python evolved and, in 2.6, forbids the use of 'message'.
        """
        StandardError.__init__(self)
        if msg is not None:
            # I was going to deprecate this, but it actually turns out to be
            # quite handy - mbp 20061103.
            self._preformatted_string = msg
        else:
            self._preformatted_string = None
            for key, value in kwds.items():
                setattr(self, key, value)

    def _format(self):
        s = getattr(self, '_preformatted_string', None)
        if s is not None:
            # contains a preformatted message
            return s
        try:
            fmt = self._get_format_string()
            if fmt:
                d = dict(self.__dict__)
                s = fmt % d
                # __str__() should always return a 'str' object
                # never a 'unicode' object.
                return s
        except Exception, e:
            pass # just bind to 'e' for formatting below
        else:
            e = None
        return 'Unprintable exception %s: dict=%r, fmt=%r, error=%r' \
            % (self.__class__.__name__,
               self.__dict__,
               getattr(self, '_fmt', None),
               e)

    def __unicode__(self):
        u = self._format()
        if isinstance(u, str):
            # Try decoding the str using the default encoding.
            u = unicode(u)
        elif not isinstance(u, unicode):
            # Try to make a unicode object from it, because __unicode__ must
            # return a unicode object.
            u = unicode(u)
        return u

    def __str__(self):
        s = self._format()
        if isinstance(s, unicode):
            s = s.encode('utf8')
        else:
            # __str__ must return a str.
            s = str(s)
        return s

    def __repr__(self):
        return '%s(%s)' % (self.__class__.__name__, str(self))

    def _get_format_string(self):
        """Return format string for this exception or None"""
        fmt = getattr(self, '_fmt', None)
        if fmt is not None:
            from bzrlib.i18n import gettext
            return gettext(unicode(fmt)) # _fmt strings should be ascii

    def __eq__(self, other):
        if self.__class__ is not other.__class__:
            return NotImplemented
        return self.__dict__ == other.__dict__


class InternalBzrError(BzrError):
    """Base class for errors that are internal in nature.

    This is a convenience class for errors that are internal. The
    internal_error attribute can still be altered in subclasses, if needed.
    Using this class is simply an easy way to get internal errors.
    """

    internal_error = True


class AlreadyBuilding(BzrError):

    _fmt = "The tree builder is already building a tree."


class BranchError(BzrError):
    """Base class for concrete 'errors about a branch'."""

    def __init__(self, branch):
        BzrError.__init__(self, branch=branch)


class BzrCheckError(InternalBzrError):

    _fmt = "Internal check failed: %(msg)s"

    def __init__(self, msg):
        BzrError.__init__(self)
        self.msg = msg


class DirstateCorrupt(BzrError):

    _fmt = "The dirstate file (%(state)s) appears to be corrupt: %(msg)s"

    def __init__(self, state, msg):
        BzrError.__init__(self)
        self.state = state
        self.msg = msg


class DisabledMethod(InternalBzrError):

    _fmt = "The smart server method '%(class_name)s' is disabled."

    def __init__(self, class_name):
        BzrError.__init__(self)
        self.class_name = class_name


class IncompatibleAPI(BzrError):

    _fmt = 'The API for "%(api)s" is not compatible with "%(wanted)s". '\
        'It supports versions "%(minimum)s" to "%(current)s".'

    def __init__(self, api, wanted, minimum, current):
        self.api = api
        self.wanted = wanted
        self.minimum = minimum
        self.current = current


class InProcessTransport(BzrError):

    _fmt = "The transport '%(transport)s' is only accessible within this " \
        "process."

    def __init__(self, transport):
        self.transport = transport


class InvalidEntryName(InternalBzrError):

    _fmt = "Invalid entry name: %(name)s"

    def __init__(self, name):
        BzrError.__init__(self)
        self.name = name


class InvalidRevisionNumber(BzrError):

    _fmt = "Invalid revision number %(revno)s"

    def __init__(self, revno):
        BzrError.__init__(self)
        self.revno = revno


class InvalidRevisionId(BzrError):

    _fmt = "Invalid revision-id {%(revision_id)s} in %(branch)s"

    def __init__(self, revision_id, branch):
        # branch can be any string or object with __str__ defined
        BzrError.__init__(self)
        self.revision_id = revision_id
        self.branch = branch


class ReservedId(BzrError):

    _fmt = "Reserved revision-id {%(revision_id)s}"

    def __init__(self, revision_id):
        self.revision_id = revision_id


class RootMissing(InternalBzrError):

    _fmt = ("The root entry of a tree must be the first entry supplied to "
        "the commit builder.")


class NoPublicBranch(BzrError):

    _fmt = 'There is no public branch set for "%(branch_url)s".'

    def __init__(self, branch):
        import bzrlib.urlutils as urlutils
        public_location = urlutils.unescape_for_display(branch.base, 'ascii')
        BzrError.__init__(self, branch_url=public_location)


class NoHelpTopic(BzrError):

    _fmt = ("No help could be found for '%(topic)s'. "
        "Please use 'bzr help topics' to obtain a list of topics.")

    def __init__(self, topic):
        self.topic = topic


class NoSuchId(BzrError):

    _fmt = 'The file id "%(file_id)s" is not present in the tree %(tree)s.'

    def __init__(self, tree, file_id):
        BzrError.__init__(self)
        self.file_id = file_id
        self.tree = tree


class NoSuchIdInRepository(NoSuchId):

    _fmt = ('The file id "%(file_id)s" is not present in the repository'
            ' %(repository)r')

    def __init__(self, repository, file_id):
        BzrError.__init__(self, repository=repository, file_id=file_id)


class NotStacked(BranchError):

    _fmt = "The branch '%(branch)s' is not stacked."


class InventoryModified(InternalBzrError):

    _fmt = ("The current inventory for the tree %(tree)r has been modified,"
            " so a clean inventory cannot be read without data loss.")

    def __init__(self, tree):
        self.tree = tree


class NoWorkingTree(BzrError):

    _fmt = 'No WorkingTree exists for "%(base)s".'

    def __init__(self, base):
        BzrError.__init__(self)
        self.base = base


class NotBuilding(BzrError):

    _fmt = "Not currently building a tree."


class NotLocalUrl(BzrError):

    _fmt = "%(url)s is not a local path."

    def __init__(self, url):
        self.url = url


class WorkingTreeAlreadyPopulated(InternalBzrError):

    _fmt = 'Working tree already populated in "%(base)s"'

    def __init__(self, base):
        self.base = base


class BzrCommandError(BzrError):
    """Error from user command"""

    # Error from malformed user command; please avoid raising this as a
    # generic exception not caused by user input.
    #
    # I think it's a waste of effort to differentiate between errors that
    # are not intended to be caught anyway.  UI code need not subclass
    # BzrCommandError, and non-UI code should not throw a subclass of
    # BzrCommandError.  ADHB 20051211


class NotWriteLocked(BzrError):

    _fmt = """%(not_locked)r is not write locked but needs to be."""

    def __init__(self, not_locked):
        self.not_locked = not_locked


class BzrOptionError(BzrCommandError):

    _fmt = "Error in command line options"


class BadIndexFormatSignature(BzrError):

    _fmt = "%(value)s is not an index of type %(_type)s."

    def __init__(self, value, _type):
        BzrError.__init__(self)
        self.value = value
        self._type = _type


class BadIndexData(BzrError):

    _fmt = "Error in data for index %(value)s."

    def __init__(self, value):
        BzrError.__init__(self)
        self.value = value


class BadIndexDuplicateKey(BzrError):

    _fmt = "The key '%(key)s' is already in index '%(index)s'."

    def __init__(self, key, index):
        BzrError.__init__(self)
        self.key = key
        self.index = index


class BadIndexKey(BzrError):

    _fmt = "The key '%(key)s' is not a valid key."

    def __init__(self, key):
        BzrError.__init__(self)
        self.key = key


class BadIndexOptions(BzrError):

    _fmt = "Could not parse options for index %(value)s."

    def __init__(self, value):
        BzrError.__init__(self)
        self.value = value


class BadIndexValue(BzrError):

    _fmt = "The value '%(value)s' is not a valid value."

    def __init__(self, value):
        BzrError.__init__(self)
        self.value = value


class BadOptionValue(BzrError):

    _fmt = """Bad value "%(value)s" for option "%(name)s"."""

    def __init__(self, name, value):
        BzrError.__init__(self, name=name, value=value)


class StrictCommitFailed(BzrError):

    _fmt = "Commit refused because there are unknown files in the tree"


# XXX: Should be unified with TransportError; they seem to represent the
# same thing
# RBC 20060929: I think that unifiying with TransportError would be a mistake
# - this is finer than a TransportError - and more useful as such. It
# differentiates between 'transport has failed' and 'operation on a transport
# has failed.'
class PathError(BzrError):

    _fmt = "Generic path error: %(path)r%(extra)s)"

    def __init__(self, path, extra=None):
        BzrError.__init__(self)
        self.path = path
        if extra:
            self.extra = ': ' + str(extra)
        else:
            self.extra = ''


class NoSuchFile(PathError):

    _fmt = "No such file: %(path)r%(extra)s"


class FileExists(PathError):

    _fmt = "File exists: %(path)r%(extra)s"


class RenameFailedFilesExist(BzrError):
    """Used when renaming and both source and dest exist."""

    _fmt = ("Could not rename %(source)s => %(dest)s because both files exist."
            " (Use --after to tell bzr about a rename that has already"
            " happened)%(extra)s")

    def __init__(self, source, dest, extra=None):
        BzrError.__init__(self)
        self.source = str(source)
        self.dest = str(dest)
        if extra:
            self.extra = ' ' + str(extra)
        else:
            self.extra = ''


class NotADirectory(PathError):

    _fmt = '"%(path)s" is not a directory %(extra)s'


class NotInWorkingDirectory(PathError):

    _fmt = '"%(path)s" is not in the working directory %(extra)s'


class DirectoryNotEmpty(PathError):

    _fmt = 'Directory not empty: "%(path)s"%(extra)s'


class HardLinkNotSupported(PathError):

    _fmt = 'Hard-linking "%(path)s" is not supported'


class ReadingCompleted(InternalBzrError):

    _fmt = ("The MediumRequest '%(request)s' has already had finish_reading "
            "called upon it - the request has been completed and no more "
            "data may be read.")

    def __init__(self, request):
        self.request = request


class ResourceBusy(PathError):

    _fmt = 'Device or resource busy: "%(path)s"%(extra)s'


class PermissionDenied(PathError):

    _fmt = 'Permission denied: "%(path)s"%(extra)s'


class InvalidURL(PathError):

    _fmt = 'Invalid url supplied to transport: "%(path)s"%(extra)s'


class InvalidURLJoin(PathError):

    _fmt = "Invalid URL join request: %(reason)s: %(base)r + %(join_args)r"

    def __init__(self, reason, base, join_args):
        self.reason = reason
        self.base = base
        self.join_args = join_args
        PathError.__init__(self, base, reason)


class InvalidRebaseURLs(PathError):

    _fmt = "URLs differ by more than path: %(from_)r and %(to)r"

    def __init__(self, from_, to):
        self.from_ = from_
        self.to = to
        PathError.__init__(self, from_, 'URLs differ by more than path.')


class UnavailableRepresentation(InternalBzrError):

    _fmt = ("The encoding '%(wanted)s' is not available for key %(key)s which "
        "is encoded as '%(native)s'.")

    def __init__(self, key, wanted, native):
        InternalBzrError.__init__(self)
        self.wanted = wanted
        self.native = native
        self.key = key


class UnknownHook(BzrError):

    _fmt = "The %(type)s hook '%(hook)s' is unknown in this version of bzrlib."

    def __init__(self, hook_type, hook_name):
        BzrError.__init__(self)
        self.type = hook_type
        self.hook = hook_name


class UnsupportedProtocol(PathError):

    _fmt = 'Unsupported protocol for url "%(path)s"%(extra)s'

    def __init__(self, url, extra=""):
        PathError.__init__(self, url, extra=extra)


class UnstackableBranchFormat(BzrError):

    _fmt = ("The branch '%(url)s'(%(format)s) is not a stackable format. "
        "You will need to upgrade the branch to permit branch stacking.")

    def __init__(self, format, url):
        BzrError.__init__(self)
        self.format = format
        self.url = url


class UnstackableLocationError(BzrError):

    _fmt = "The branch '%(branch_url)s' cannot be stacked on '%(target_url)s'."

    def __init__(self, branch_url, target_url):
        BzrError.__init__(self)
        self.branch_url = branch_url
        self.target_url = target_url


class UnstackableRepositoryFormat(BzrError):

    _fmt = ("The repository '%(url)s'(%(format)s) is not a stackable format. "
        "You will need to upgrade the repository to permit branch stacking.")

    def __init__(self, format, url):
        BzrError.__init__(self)
        self.format = format
        self.url = url


class ReadError(PathError):

    _fmt = """Error reading from %(path)r."""


class ShortReadvError(PathError):

    _fmt = ('readv() read %(actual)s bytes rather than %(length)s bytes'
            ' at %(offset)s for "%(path)s"%(extra)s')

    internal_error = True

    def __init__(self, path, offset, length, actual, extra=None):
        PathError.__init__(self, path, extra=extra)
        self.offset = offset
        self.length = length
        self.actual = actual


class PathNotChild(PathError):

    _fmt = 'Path "%(path)s" is not a child of path "%(base)s"%(extra)s'

    internal_error = False

    def __init__(self, path, base, extra=None):
        BzrError.__init__(self)
        self.path = path
        self.base = base
        if extra:
            self.extra = ': ' + str(extra)
        else:
            self.extra = ''


class InvalidNormalization(PathError):

    _fmt = 'Path "%(path)s" is not unicode normalized'


# TODO: This is given a URL; we try to unescape it but doing that from inside
# the exception object is a bit undesirable.
# TODO: Probably this behavior of should be a common superclass
class NotBranchError(PathError):

    _fmt = 'Not a branch: "%(path)s"%(detail)s.'

    def __init__(self, path, detail=None, bzrdir=None):
       import bzrlib.urlutils as urlutils
       path = urlutils.unescape_for_display(path, 'ascii')
       if detail is not None:
           detail = ': ' + detail
       self.detail = detail
       self.bzrdir = bzrdir
       PathError.__init__(self, path=path)

    def __repr__(self):
        return '<%s %r>' % (self.__class__.__name__, self.__dict__)

    def _format(self):
        # XXX: Ideally self.detail would be a property, but Exceptions in
        # Python 2.4 have to be old-style classes so properties don't work.
        # Instead we override _format.
        if self.detail is None:
            if self.bzrdir is not None:
                try:
                    self.bzrdir.open_repository()
                except NoRepositoryPresent:
                    self.detail = ''
                except Exception:
                    # Just ignore unexpected errors.  Raising arbitrary errors
                    # during str(err) can provoke strange bugs.  Concretely
                    # Launchpad's codehosting managed to raise NotBranchError
                    # here, and then get stuck in an infinite loop/recursion
                    # trying to str() that error.  All this error really cares
                    # about that there's no working repository there, and if
                    # open_repository() fails, there probably isn't.
                    self.detail = ''
                else:
                    self.detail = ': location is a repository'
            else:
                self.detail = ''
        return PathError._format(self)


class NoSubmitBranch(PathError):

    _fmt = 'No submit branch available for branch "%(path)s"'

    def __init__(self, branch):
       import bzrlib.urlutils as urlutils
       self.path = urlutils.unescape_for_display(branch.base, 'ascii')


class AlreadyControlDirError(PathError):

    _fmt = 'A control directory already exists: "%(path)s".'


class AlreadyBranchError(PathError):

    _fmt = 'Already a branch: "%(path)s".'


class InvalidBranchName(PathError):

    _fmt = "Invalid branch name: %(name)s"

    def __init__(self, name):
        BzrError.__init__(self)
        self.name = name


class ParentBranchExists(AlreadyBranchError):

    _fmt = 'Parent branch already exists: "%(path)s".'


class BranchExistsWithoutWorkingTree(PathError):

    _fmt = 'Directory contains a branch, but no working tree \
(use bzr checkout if you wish to build a working tree): "%(path)s"'


class AtomicFileAlreadyClosed(PathError):

    _fmt = ('"%(function)s" called on an AtomicFile after it was closed:'
            ' "%(path)s"')

    def __init__(self, path, function):
        PathError.__init__(self, path=path, extra=None)
        self.function = function


class InaccessibleParent(PathError):

    _fmt = ('Parent not accessible given base "%(base)s" and'
            ' relative path "%(path)s"')

    def __init__(self, path, base):
        PathError.__init__(self, path)
        self.base = base


class NoRepositoryPresent(BzrError):

    _fmt = 'No repository present: "%(path)s"'
    def __init__(self, bzrdir):
        BzrError.__init__(self)
        self.path = bzrdir.transport.clone('..').base


class UnsupportedFormatError(BzrError):

    _fmt = "Unsupported branch format: %(format)s\nPlease run 'bzr upgrade'"


class UnknownFormatError(BzrError):

    _fmt = "Unknown %(kind)s format: %(format)r"

    def __init__(self, format, kind='branch'):
        self.kind = kind
        self.format = format


class IncompatibleFormat(BzrError):

    _fmt = "Format %(format)s is not compatible with .bzr version %(bzrdir)s."

    def __init__(self, format, bzrdir_format):
        BzrError.__init__(self)
        self.format = format
        self.bzrdir = bzrdir_format


class ParseFormatError(BzrError):

    _fmt = "Parse error on line %(lineno)d of %(format)s format: %(line)s"

    def __init__(self, format, lineno, line, text):
        BzrError.__init__(self)
        self.format = format
        self.lineno = lineno
        self.line = line
        self.text = text


class IncompatibleRepositories(BzrError):
    """Report an error that two repositories are not compatible.

    Note that the source and target repositories are permitted to be strings:
    this exception is thrown from the smart server and may refer to a
    repository the client hasn't opened.
    """

    _fmt = "%(target)s\n" \
            "is not compatible with\n" \
            "%(source)s\n" \
            "%(details)s"

    def __init__(self, source, target, details=None):
        if details is None:
            details = "(no details)"
        BzrError.__init__(self, target=target, source=source, details=details)


class IncompatibleRevision(BzrError):

    _fmt = "Revision is not compatible with %(repo_format)s"

    def __init__(self, repo_format):
        BzrError.__init__(self)
        self.repo_format = repo_format


class AlreadyVersionedError(BzrError):
    """Used when a path is expected not to be versioned, but it is."""

    _fmt = "%(context_info)s%(path)s is already versioned."

    def __init__(self, path, context_info=None):
        """Construct a new AlreadyVersionedError.

        :param path: This is the path which is versioned,
            which should be in a user friendly form.
        :param context_info: If given, this is information about the context,
            which could explain why this is expected to not be versioned.
        """
        BzrError.__init__(self)
        self.path = path
        if context_info is None:
            self.context_info = ''
        else:
            self.context_info = context_info + ". "


class NotVersionedError(BzrError):
    """Used when a path is expected to be versioned, but it is not."""

    _fmt = "%(context_info)s%(path)s is not versioned."

    def __init__(self, path, context_info=None):
        """Construct a new NotVersionedError.

        :param path: This is the path which is not versioned,
            which should be in a user friendly form.
        :param context_info: If given, this is information about the context,
            which could explain why this is expected to be versioned.
        """
        BzrError.__init__(self)
        self.path = path
        if context_info is None:
            self.context_info = ''
        else:
            self.context_info = context_info + ". "


class PathsNotVersionedError(BzrError):
    """Used when reporting several paths which are not versioned"""

    _fmt = "Path(s) are not versioned: %(paths_as_string)s"

    def __init__(self, paths):
        from bzrlib.osutils import quotefn
        BzrError.__init__(self)
        self.paths = paths
        self.paths_as_string = ' '.join([quotefn(p) for p in paths])


class PathsDoNotExist(BzrError):

    _fmt = "Path(s) do not exist: %(paths_as_string)s%(extra)s"

    # used when reporting that paths are neither versioned nor in the working
    # tree

    def __init__(self, paths, extra=None):
        # circular import
        from bzrlib.osutils import quotefn
        BzrError.__init__(self)
        self.paths = paths
        self.paths_as_string = ' '.join([quotefn(p) for p in paths])
        if extra:
            self.extra = ': ' + str(extra)
        else:
            self.extra = ''


class BadFileKindError(BzrError):

    _fmt = 'Cannot operate on "%(filename)s" of unsupported kind "%(kind)s"'

    def __init__(self, filename, kind):
        BzrError.__init__(self, filename=filename, kind=kind)


class BadFilenameEncoding(BzrError):

    _fmt = ('Filename %(filename)r is not valid in your current filesystem'
            ' encoding %(fs_encoding)s')

    def __init__(self, filename, fs_encoding):
        BzrError.__init__(self)
        self.filename = filename
        self.fs_encoding = fs_encoding


class ForbiddenControlFileError(BzrError):

    _fmt = 'Cannot operate on "%(filename)s" because it is a control file'


class LockError(InternalBzrError):

    _fmt = "Lock error: %(msg)s"

    # All exceptions from the lock/unlock functions should be from
    # this exception class.  They will be translated as necessary. The
    # original exception is available as e.original_error
    #
    # New code should prefer to raise specific subclasses
    def __init__(self, msg):
        self.msg = msg


class LockActive(LockError):

    _fmt = "The lock for '%(lock_description)s' is in use and cannot be broken."

    internal_error = False

    def __init__(self, lock_description):
        self.lock_description = lock_description


class CommitNotPossible(LockError):

    _fmt = "A commit was attempted but we do not have a write lock open."

    def __init__(self):
        pass


class AlreadyCommitted(LockError):

    _fmt = "A rollback was requested, but is not able to be accomplished."

    def __init__(self):
        pass


class ReadOnlyError(LockError):

    _fmt = "A write attempt was made in a read only transaction on %(obj)s"

    # TODO: There should also be an error indicating that you need a write
    # lock and don't have any lock at all... mbp 20070226

    def __init__(self, obj):
        self.obj = obj


class LockFailed(LockError):

    internal_error = False

    _fmt = "Cannot lock %(lock)s: %(why)s"

    def __init__(self, lock, why):
        LockError.__init__(self, '')
        self.lock = lock
        self.why = why


class OutSideTransaction(BzrError):

    _fmt = ("A transaction related operation was attempted after"
            " the transaction finished.")


class ObjectNotLocked(LockError):

    _fmt = "%(obj)r is not locked"

    # this can indicate that any particular object is not locked; see also
    # LockNotHeld which means that a particular *lock* object is not held by
    # the caller -- perhaps they should be unified.
    def __init__(self, obj):
        self.obj = obj


class ReadOnlyObjectDirtiedError(ReadOnlyError):

    _fmt = "Cannot change object %(obj)r in read only transaction"

    def __init__(self, obj):
        self.obj = obj


class UnlockableTransport(LockError):

    internal_error = False

    _fmt = "Cannot lock: transport is read only: %(transport)s"

    def __init__(self, transport):
        self.transport = transport


class LockContention(LockError):

    _fmt = 'Could not acquire lock "%(lock)s": %(msg)s'

    internal_error = False

    def __init__(self, lock, msg=''):
        self.lock = lock
        self.msg = msg


class LockBroken(LockError):

    _fmt = ("Lock was broken while still open: %(lock)s"
            " - check storage consistency!")

    internal_error = False

    def __init__(self, lock):
        self.lock = lock


class LockBreakMismatch(LockError):

    _fmt = ("Lock was released and re-acquired before being broken:"
            " %(lock)s: held by %(holder)r, wanted to break %(target)r")

    internal_error = False

    def __init__(self, lock, holder, target):
        self.lock = lock
        self.holder = holder
        self.target = target


class LockCorrupt(LockError):

    _fmt = ("Lock is apparently held, but corrupted: %(corruption_info)s\n"
            "Use 'bzr break-lock' to clear it")

    internal_error = False

    def __init__(self, corruption_info, file_data=None):
        self.corruption_info = corruption_info
        self.file_data = file_data


class LockNotHeld(LockError):

    _fmt = "Lock not held: %(lock)s"

    internal_error = False

    def __init__(self, lock):
        self.lock = lock


class TokenLockingNotSupported(LockError):

    _fmt = "The object %(obj)s does not support token specifying a token when locking."

    def __init__(self, obj):
        self.obj = obj


class TokenMismatch(LockBroken):

    _fmt = "The lock token %(given_token)r does not match lock token %(lock_token)r."

    internal_error = True

    def __init__(self, given_token, lock_token):
        self.given_token = given_token
        self.lock_token = lock_token


class PointlessCommit(BzrError):

    _fmt = "No changes to commit"


class CannotCommitSelectedFileMerge(BzrError):

    _fmt = 'Selected-file commit of merges is not supported yet:'\
        ' files %(files_str)s'

    def __init__(self, files):
        files_str = ', '.join(files)
        BzrError.__init__(self, files=files, files_str=files_str)


class ExcludesUnsupported(BzrError):

    _fmt = ('Excluding paths during commit is not supported by '
            'repository at %(repository)r.')

    def __init__(self, repository):
        BzrError.__init__(self, repository=repository)


class BadCommitMessageEncoding(BzrError):

    _fmt = 'The specified commit message contains characters unsupported by '\
        'the current encoding.'


class UpgradeReadonly(BzrError):

    _fmt = "Upgrade URL cannot work with readonly URLs."


class UpToDateFormat(BzrError):

    _fmt = "The branch format %(format)s is already at the most recent format."

    def __init__(self, format):
        BzrError.__init__(self)
        self.format = format


class StrictCommitFailed(Exception):

    _fmt = "Commit refused because there are unknowns in the tree."


class NoSuchRevision(InternalBzrError):

    _fmt = "%(branch)s has no revision %(revision)s"

    def __init__(self, branch, revision):
        # 'branch' may sometimes be an internal object like a KnitRevisionStore
        BzrError.__init__(self, branch=branch, revision=revision)


class RangeInChangeOption(BzrError):

    _fmt = "Option --change does not accept revision ranges"


class NoSuchRevisionSpec(BzrError):

    _fmt = "No namespace registered for string: %(spec)r"

    def __init__(self, spec):
        BzrError.__init__(self, spec=spec)


class NoSuchRevisionInTree(NoSuchRevision):
    """When using Tree.revision_tree, and the revision is not accessible."""

    _fmt = "The revision id {%(revision_id)s} is not present in the tree %(tree)s."

    def __init__(self, tree, revision_id):
        BzrError.__init__(self)
        self.tree = tree
        self.revision_id = revision_id


class InvalidRevisionSpec(BzrError):

    _fmt = ("Requested revision: '%(spec)s' does not exist in branch:"
            " %(branch_url)s%(extra)s")

    def __init__(self, spec, branch, extra=None):
        BzrError.__init__(self, branch=branch, spec=spec)
        self.branch_url = getattr(branch, 'user_url', str(branch))
        if extra:
            self.extra = '\n' + str(extra)
        else:
            self.extra = ''


class AppendRevisionsOnlyViolation(BzrError):

    _fmt = ('Operation denied because it would change the main history,'
           ' which is not permitted by the append_revisions_only setting on'
           ' branch "%(location)s".')

    def __init__(self, location):
       import bzrlib.urlutils as urlutils
       location = urlutils.unescape_for_display(location, 'ascii')
       BzrError.__init__(self, location=location)


class DivergedBranches(BzrError):

    _fmt = ("These branches have diverged."
            " Use the missing command to see how.\n"
            "Use the merge command to reconcile them.")

    def __init__(self, branch1, branch2):
        self.branch1 = branch1
        self.branch2 = branch2


class NotLefthandHistory(InternalBzrError):

    _fmt = "Supplied history does not follow left-hand parents"

    def __init__(self, history):
        BzrError.__init__(self, history=history)


class UnrelatedBranches(BzrError):

    _fmt = ("Branches have no common ancestor, and"
            " no merge base revision was specified.")


class CannotReverseCherrypick(BzrError):

    _fmt = ('Selected merge cannot perform reverse cherrypicks.  Try merge3'
            ' or diff3.')


class NoCommonAncestor(BzrError):

    _fmt = "Revisions have no common ancestor: %(revision_a)s %(revision_b)s"

    def __init__(self, revision_a, revision_b):
        self.revision_a = revision_a
        self.revision_b = revision_b


class NoCommonRoot(BzrError):

    _fmt = ("Revisions are not derived from the same root: "
           "%(revision_a)s %(revision_b)s.")

    def __init__(self, revision_a, revision_b):
        BzrError.__init__(self, revision_a=revision_a, revision_b=revision_b)


class NotAncestor(BzrError):

    _fmt = "Revision %(rev_id)s is not an ancestor of %(not_ancestor_id)s"

    def __init__(self, rev_id, not_ancestor_id):
        BzrError.__init__(self, rev_id=rev_id,
            not_ancestor_id=not_ancestor_id)


class NoCommits(BranchError):

    _fmt = "Branch %(branch)s has no commits."


class UnlistableStore(BzrError):

    def __init__(self, store):
        BzrError.__init__(self, "Store %s is not listable" % store)



class UnlistableBranch(BzrError):

    def __init__(self, br):
        BzrError.__init__(self, "Stores for branch %s are not listable" % br)


class BoundBranchOutOfDate(BzrError):

    _fmt = ("Bound branch %(branch)s is out of date with master branch"
            " %(master)s.%(extra_help)s")

    def __init__(self, branch, master):
        BzrError.__init__(self)
        self.branch = branch
        self.master = master
        self.extra_help = ''


class CommitToDoubleBoundBranch(BzrError):

    _fmt = ("Cannot commit to branch %(branch)s."
            " It is bound to %(master)s, which is bound to %(remote)s.")

    def __init__(self, branch, master, remote):
        BzrError.__init__(self)
        self.branch = branch
        self.master = master
        self.remote = remote


class OverwriteBoundBranch(BzrError):

    _fmt = "Cannot pull --overwrite to a branch which is bound %(branch)s"

    def __init__(self, branch):
        BzrError.__init__(self)
        self.branch = branch


class BoundBranchConnectionFailure(BzrError):

    _fmt = ("Unable to connect to target of bound branch %(branch)s"
            " => %(target)s: %(error)s")

    def __init__(self, branch, target, error):
        BzrError.__init__(self)
        self.branch = branch
        self.target = target
        self.error = error


class WeaveError(BzrError):

    _fmt = "Error in processing weave: %(msg)s"

    def __init__(self, msg=None):
        BzrError.__init__(self)
        self.msg = msg


class WeaveRevisionAlreadyPresent(WeaveError):

    _fmt = "Revision {%(revision_id)s} already present in %(weave)s"

    def __init__(self, revision_id, weave):

        WeaveError.__init__(self)
        self.revision_id = revision_id
        self.weave = weave


class WeaveRevisionNotPresent(WeaveError):

    _fmt = "Revision {%(revision_id)s} not present in %(weave)s"

    def __init__(self, revision_id, weave):
        WeaveError.__init__(self)
        self.revision_id = revision_id
        self.weave = weave


class WeaveFormatError(WeaveError):

    _fmt = "Weave invariant violated: %(what)s"

    def __init__(self, what):
        WeaveError.__init__(self)
        self.what = what


class WeaveParentMismatch(WeaveError):

    _fmt = "Parents are mismatched between two revisions. %(msg)s"


class WeaveInvalidChecksum(WeaveError):

    _fmt = "Text did not match its checksum: %(msg)s"


class WeaveTextDiffers(WeaveError):

    _fmt = ("Weaves differ on text content. Revision:"
            " {%(revision_id)s}, %(weave_a)s, %(weave_b)s")

    def __init__(self, revision_id, weave_a, weave_b):
        WeaveError.__init__(self)
        self.revision_id = revision_id
        self.weave_a = weave_a
        self.weave_b = weave_b


class WeaveTextDiffers(WeaveError):

    _fmt = ("Weaves differ on text content. Revision:"
            " {%(revision_id)s}, %(weave_a)s, %(weave_b)s")

    def __init__(self, revision_id, weave_a, weave_b):
        WeaveError.__init__(self)
        self.revision_id = revision_id
        self.weave_a = weave_a
        self.weave_b = weave_b


class VersionedFileError(BzrError):

    _fmt = "Versioned file error"


class RevisionNotPresent(VersionedFileError):

    _fmt = 'Revision {%(revision_id)s} not present in "%(file_id)s".'

    def __init__(self, revision_id, file_id):
        VersionedFileError.__init__(self)
        self.revision_id = revision_id
        self.file_id = file_id


class RevisionAlreadyPresent(VersionedFileError):

    _fmt = 'Revision {%(revision_id)s} already present in "%(file_id)s".'

    def __init__(self, revision_id, file_id):
        VersionedFileError.__init__(self)
        self.revision_id = revision_id
        self.file_id = file_id


class VersionedFileInvalidChecksum(VersionedFileError):

    _fmt = "Text did not match its checksum: %(msg)s"


class KnitError(InternalBzrError):

    _fmt = "Knit error"


class KnitCorrupt(KnitError):

    _fmt = "Knit %(filename)s corrupt: %(how)s"

    def __init__(self, filename, how):
        KnitError.__init__(self)
        self.filename = filename
        self.how = how


class SHA1KnitCorrupt(KnitCorrupt):

    _fmt = ("Knit %(filename)s corrupt: sha-1 of reconstructed text does not "
        "match expected sha-1. key %(key)s expected sha %(expected)s actual "
        "sha %(actual)s")

    def __init__(self, filename, actual, expected, key, content):
        KnitError.__init__(self)
        self.filename = filename
        self.actual = actual
        self.expected = expected
        self.key = key
        self.content = content


class KnitDataStreamIncompatible(KnitError):
    # Not raised anymore, as we can convert data streams.  In future we may
    # need it again for more exotic cases, so we're keeping it around for now.

    _fmt = "Cannot insert knit data stream of format \"%(stream_format)s\" into knit of format \"%(target_format)s\"."

    def __init__(self, stream_format, target_format):
        self.stream_format = stream_format
        self.target_format = target_format


class KnitDataStreamUnknown(KnitError):
    # Indicates a data stream we don't know how to handle.

    _fmt = "Cannot parse knit data stream of format \"%(stream_format)s\"."

    def __init__(self, stream_format):
        self.stream_format = stream_format


class KnitHeaderError(KnitError):

    _fmt = 'Knit header error: %(badline)r unexpected for file "%(filename)s".'

    def __init__(self, badline, filename):
        KnitError.__init__(self)
        self.badline = badline
        self.filename = filename

class KnitIndexUnknownMethod(KnitError):
    """Raised when we don't understand the storage method.

    Currently only 'fulltext' and 'line-delta' are supported.
    """

    _fmt = ("Knit index %(filename)s does not have a known method"
            " in options: %(options)r")

    def __init__(self, filename, options):
        KnitError.__init__(self)
        self.filename = filename
        self.options = options


class RetryWithNewPacks(BzrError):
    """Raised when we realize that the packs on disk have changed.

    This is meant as more of a signaling exception, to trap between where a
    local error occurred and the code that can actually handle the error and
    code that can retry appropriately.
    """

    internal_error = True

    _fmt = ("Pack files have changed, reload and retry. context: %(context)s"
            " %(orig_error)s")

    def __init__(self, context, reload_occurred, exc_info):
        """create a new RetryWithNewPacks error.

        :param reload_occurred: Set to True if we know that the packs have
            already been reloaded, and we are failing because of an in-memory
            cache miss. If set to True then we will ignore if a reload says
            nothing has changed, because we assume it has already reloaded. If
            False, then a reload with nothing changed will force an error.
        :param exc_info: The original exception traceback, so if there is a
            problem we can raise the original error (value from sys.exc_info())
        """
        BzrError.__init__(self)
        self.context = context
        self.reload_occurred = reload_occurred
        self.exc_info = exc_info
        self.orig_error = exc_info[1]
        # TODO: The global error handler should probably treat this by
        #       raising/printing the original exception with a bit about
        #       RetryWithNewPacks also not being caught


class RetryAutopack(RetryWithNewPacks):
    """Raised when we are autopacking and we find a missing file.

    Meant as a signaling exception, to tell the autopack code it should try
    again.
    """

    internal_error = True

    _fmt = ("Pack files have changed, reload and try autopack again."
            " context: %(context)s %(orig_error)s")


class NoSuchExportFormat(BzrError):

    _fmt = "Export format %(format)r not supported"

    def __init__(self, format):
        BzrError.__init__(self)
        self.format = format


class TransportError(BzrError):

    _fmt = "Transport error: %(msg)s %(orig_error)s"

    def __init__(self, msg=None, orig_error=None):
        if msg is None and orig_error is not None:
            msg = str(orig_error)
        if orig_error is None:
            orig_error = ''
        if msg is None:
            msg =  ''
        self.msg = msg
        self.orig_error = orig_error
        BzrError.__init__(self)


class TooManyConcurrentRequests(InternalBzrError):

    _fmt = ("The medium '%(medium)s' has reached its concurrent request limit."
            " Be sure to finish_writing and finish_reading on the"
            " currently open request.")

    def __init__(self, medium):
        self.medium = medium


class SmartProtocolError(TransportError):

    _fmt = "Generic bzr smart protocol error: %(details)s"

    def __init__(self, details):
        self.details = details


class UnexpectedProtocolVersionMarker(TransportError):

    _fmt = "Received bad protocol version marker: %(marker)r"

    def __init__(self, marker):
        self.marker = marker


class UnknownSmartMethod(InternalBzrError):

    _fmt = "The server does not recognise the '%(verb)s' request."

    def __init__(self, verb):
        self.verb = verb


class SmartMessageHandlerError(InternalBzrError):

    _fmt = ("The message handler raised an exception:\n"
            "%(traceback_text)s")

    def __init__(self, exc_info):
        import traceback
        # GZ 2010-08-10: Cycle with exc_tb/exc_info affects at least one test
        self.exc_type, self.exc_value, self.exc_tb = exc_info
        self.exc_info = exc_info
        traceback_strings = traceback.format_exception(
                self.exc_type, self.exc_value, self.exc_tb)
        self.traceback_text = ''.join(traceback_strings)


# A set of semi-meaningful errors which can be thrown
class TransportNotPossible(TransportError):

    _fmt = "Transport operation not possible: %(msg)s %(orig_error)s"


class ConnectionError(TransportError):

    _fmt = "Connection error: %(msg)s %(orig_error)s"


class SocketConnectionError(ConnectionError):

    _fmt = "%(msg)s %(host)s%(port)s%(orig_error)s"

    def __init__(self, host, port=None, msg=None, orig_error=None):
        if msg is None:
            msg = 'Failed to connect to'
        if orig_error is None:
            orig_error = ''
        else:
            orig_error = '; ' + str(orig_error)
        ConnectionError.__init__(self, msg=msg, orig_error=orig_error)
        self.host = host
        if port is None:
            self.port = ''
        else:
            self.port = ':%s' % port


# XXX: This is also used for unexpected end of file, which is different at the
# TCP level from "connection reset".
class ConnectionReset(TransportError):

    _fmt = "Connection closed: %(msg)s %(orig_error)s"


class ConnectionTimeout(ConnectionError):

    _fmt = "Connection Timeout: %(msg)s%(orig_error)s"


class InvalidRange(TransportError):

    _fmt = "Invalid range access in %(path)s at %(offset)s: %(msg)s"

    def __init__(self, path, offset, msg=None):
        TransportError.__init__(self, msg)
        self.path = path
        self.offset = offset


class InvalidHttpResponse(TransportError):

    _fmt = "Invalid http response for %(path)s: %(msg)s%(orig_error)s"

    def __init__(self, path, msg, orig_error=None):
        self.path = path
        if orig_error is None:
            orig_error = ''
        else:
            # This is reached for obscure and unusual errors so we want to
            # preserve as much info as possible to ease debug.
            orig_error = ': %r' % (orig_error,)
        TransportError.__init__(self, msg, orig_error=orig_error)


class CertificateError(TransportError):

    _fmt = "Certificate error: %(error)s"

    def __init__(self, error):
        self.error = error


class InvalidHttpRange(InvalidHttpResponse):

    _fmt = "Invalid http range %(range)r for %(path)s: %(msg)s"

    def __init__(self, path, range, msg):
        self.range = range
        InvalidHttpResponse.__init__(self, path, msg)


class HttpBoundaryMissing(InvalidHttpResponse):
    """A multipart response ends with no boundary marker.

    This is a special case caused by buggy proxies, described in
    <https://bugs.launchpad.net/bzr/+bug/198646>.
    """

    _fmt = "HTTP MIME Boundary missing for %(path)s: %(msg)s"

    def __init__(self, path, msg):
        InvalidHttpResponse.__init__(self, path, msg)


class InvalidHttpContentType(InvalidHttpResponse):

    _fmt = 'Invalid http Content-type "%(ctype)s" for %(path)s: %(msg)s'

    def __init__(self, path, ctype, msg):
        self.ctype = ctype
        InvalidHttpResponse.__init__(self, path, msg)


class RedirectRequested(TransportError):

    _fmt = '%(source)s is%(permanently)s redirected to %(target)s'

    def __init__(self, source, target, is_permanent=False):
        self.source = source
        self.target = target
        if is_permanent:
            self.permanently = ' permanently'
        else:
            self.permanently = ''
        TransportError.__init__(self)


class TooManyRedirections(TransportError):

    _fmt = "Too many redirections"


class ConflictsInTree(BzrError):

    _fmt = "Working tree has conflicts."


class ConfigContentError(BzrError):

    _fmt = "Config file %(filename)s is not UTF-8 encoded\n"

    def __init__(self, filename):
        BzrError.__init__(self)
        self.filename = filename


class ParseConfigError(BzrError):

    _fmt = "Error(s) parsing config file %(filename)s:\n%(errors)s"

    def __init__(self, errors, filename):
        BzrError.__init__(self)
        self.filename = filename
        self.errors = '\n'.join(e.msg for e in errors)


class ConfigOptionValueError(BzrError):

    _fmt = ('Bad value "%(value)s" for option "%(name)s".\n'
            'See ``bzr help %(name)s``')

    def __init__(self, name, value):
        BzrError.__init__(self, name=name, value=value)


class NoEmailInUsername(BzrError):

    _fmt = "%(username)r does not seem to contain a reasonable email address"

    def __init__(self, username):
        BzrError.__init__(self)
        self.username = username


class SigningFailed(BzrError):

    _fmt = 'Failed to GPG sign data with command "%(command_line)s"'

    def __init__(self, command_line):
        BzrError.__init__(self, command_line=command_line)


class SignatureVerificationFailed(BzrError):

    _fmt = 'Failed to verify GPG signature data with error "%(error)s"'

    def __init__(self, error):
        BzrError.__init__(self, error=error)


class DependencyNotPresent(BzrError):

    _fmt = 'Unable to import library "%(library)s": %(error)s'

    def __init__(self, library, error):
        BzrError.__init__(self, library=library, error=error)


class GpgmeNotInstalled(DependencyNotPresent):

    _fmt = 'python-gpgme is not installed, it is needed to verify signatures'

    def __init__(self, error):
        DependencyNotPresent.__init__(self, 'gpgme', error)


class WorkingTreeNotRevision(BzrError):

    _fmt = ("The working tree for %(basedir)s has changed since"
            " the last commit, but weave merge requires that it be"
            " unchanged")

    def __init__(self, tree):
        BzrError.__init__(self, basedir=tree.basedir)


class CantReprocessAndShowBase(BzrError):

    _fmt = ("Can't reprocess and show base, because reprocessing obscures "
           "the relationship of conflicting lines to the base")


class GraphCycleError(BzrError):

    _fmt = "Cycle in graph %(graph)r"

    def __init__(self, graph):
        BzrError.__init__(self)
        self.graph = graph


class WritingCompleted(InternalBzrError):

    _fmt = ("The MediumRequest '%(request)s' has already had finish_writing "
            "called upon it - accept bytes may not be called anymore.")

    def __init__(self, request):
        self.request = request


class WritingNotComplete(InternalBzrError):

    _fmt = ("The MediumRequest '%(request)s' has not has finish_writing "
            "called upon it - until the write phase is complete no "
            "data may be read.")

    def __init__(self, request):
        self.request = request


class NotConflicted(BzrError):

    _fmt = "File %(filename)s is not conflicted."

    def __init__(self, filename):
        BzrError.__init__(self)
        self.filename = filename


class MediumNotConnected(InternalBzrError):

    _fmt = """The medium '%(medium)s' is not connected."""

    def __init__(self, medium):
        self.medium = medium


class MustUseDecorated(Exception):

    _fmt = "A decorating function has requested its original command be used."


class NoBundleFound(BzrError):

    _fmt = 'No bundle was found in "%(filename)s".'

    def __init__(self, filename):
        BzrError.__init__(self)
        self.filename = filename


class BundleNotSupported(BzrError):

    _fmt = "Unable to handle bundle version %(version)s: %(msg)s"

    def __init__(self, version, msg):
        BzrError.__init__(self)
        self.version = version
        self.msg = msg


class MissingText(BzrError):

    _fmt = ("Branch %(base)s is missing revision"
            " %(text_revision)s of %(file_id)s")

    def __init__(self, branch, text_revision, file_id):
        BzrError.__init__(self)
        self.branch = branch
        self.base = branch.base
        self.text_revision = text_revision
        self.file_id = file_id


class DuplicateFileId(BzrError):

    _fmt = "File id {%(file_id)s} already exists in inventory as %(entry)s"

    def __init__(self, file_id, entry):
        BzrError.__init__(self)
        self.file_id = file_id
        self.entry = entry


class DuplicateKey(BzrError):

    _fmt = "Key %(key)s is already present in map"


class DuplicateHelpPrefix(BzrError):

    _fmt = "The prefix %(prefix)s is in the help search path twice."

    def __init__(self, prefix):
        self.prefix = prefix


class MalformedTransform(InternalBzrError):

    _fmt = "Tree transform is malformed %(conflicts)r"


class NoFinalPath(BzrError):

    _fmt = ("No final name for trans_id %(trans_id)r\n"
            "file-id: %(file_id)r\n"
            "root trans-id: %(root_trans_id)r\n")

    def __init__(self, trans_id, transform):
        self.trans_id = trans_id
        self.file_id = transform.final_file_id(trans_id)
        self.root_trans_id = transform.root


class BzrBadParameter(InternalBzrError):

    _fmt = "Bad parameter: %(param)r"

    # This exception should never be thrown, but it is a base class for all
    # parameter-to-function errors.

    def __init__(self, param):
        BzrError.__init__(self)
        self.param = param


class BzrBadParameterNotUnicode(BzrBadParameter):

    _fmt = "Parameter %(param)s is neither unicode nor utf8."


class ReusingTransform(BzrError):

    _fmt = "Attempt to reuse a transform that has already been applied."


class CantMoveRoot(BzrError):

    _fmt = "Moving the root directory is not supported at this time"


class TransformRenameFailed(BzrError):

    _fmt = "Failed to rename %(from_path)s to %(to_path)s: %(why)s"

    def __init__(self, from_path, to_path, why, errno):
        self.from_path = from_path
        self.to_path = to_path
        self.why = why
        self.errno = errno


class BzrMoveFailedError(BzrError):

    _fmt = ("Could not move %(from_path)s%(operator)s %(to_path)s"
        "%(_has_extra)s%(extra)s")

    def __init__(self, from_path='', to_path='', extra=None):
        from bzrlib.osutils import splitpath
        BzrError.__init__(self)
        if extra:
            self.extra, self._has_extra = extra, ': '
        else:
            self.extra = self._has_extra = ''

        has_from = len(from_path) > 0
        has_to = len(to_path) > 0
        if has_from:
            self.from_path = splitpath(from_path)[-1]
        else:
            self.from_path = ''

        if has_to:
            self.to_path = splitpath(to_path)[-1]
        else:
            self.to_path = ''

        self.operator = ""
        if has_from and has_to:
            self.operator = " =>"
        elif has_from:
            self.from_path = "from " + from_path
        elif has_to:
            self.operator = "to"
        else:
            self.operator = "file"


class BzrRenameFailedError(BzrMoveFailedError):

    _fmt = ("Could not rename %(from_path)s%(operator)s %(to_path)s"
        "%(_has_extra)s%(extra)s")

    def __init__(self, from_path, to_path, extra=None):
        BzrMoveFailedError.__init__(self, from_path, to_path, extra)


class BzrBadParameterNotString(BzrBadParameter):

    _fmt = "Parameter %(param)s is not a string or unicode string."


class BzrBadParameterMissing(BzrBadParameter):

    _fmt = "Parameter %(param)s is required but not present."


class BzrBadParameterUnicode(BzrBadParameter):

    _fmt = ("Parameter %(param)s is unicode but"
            " only byte-strings are permitted.")


class BzrBadParameterContainsNewline(BzrBadParameter):

    _fmt = "Parameter %(param)s contains a newline."


class ParamikoNotPresent(DependencyNotPresent):

    _fmt = "Unable to import paramiko (required for sftp support): %(error)s"

    def __init__(self, error):
        DependencyNotPresent.__init__(self, 'paramiko', error)


class PointlessMerge(BzrError):

    _fmt = "Nothing to merge."


class UninitializableFormat(BzrError):

    _fmt = "Format %(format)s cannot be initialised by this version of bzr."

    def __init__(self, format):
        BzrError.__init__(self)
        self.format = format


class BadConversionTarget(BzrError):

    _fmt = "Cannot convert from format %(from_format)s to format %(format)s." \
            "    %(problem)s"

    def __init__(self, problem, format, from_format=None):
        BzrError.__init__(self)
        self.problem = problem
        self.format = format
        self.from_format = from_format or '(unspecified)'


class NoDiffFound(BzrError):

    _fmt = 'Could not find an appropriate Differ for file "%(path)s"'

    def __init__(self, path):
        BzrError.__init__(self, path)


class ExecutableMissing(BzrError):

    _fmt = "%(exe_name)s could not be found on this machine"

    def __init__(self, exe_name):
        BzrError.__init__(self, exe_name=exe_name)


class NoDiff(BzrError):

    _fmt = "Diff is not installed on this machine: %(msg)s"

    def __init__(self, msg):
        BzrError.__init__(self, msg=msg)


class NoDiff3(BzrError):

    _fmt = "Diff3 is not installed on this machine."


class ExistingContent(BzrError):
    # Added in bzrlib 0.92, used by VersionedFile.add_lines.

    _fmt = "The content being inserted is already present."


class ExistingLimbo(BzrError):

    _fmt = """This tree contains left-over files from a failed operation.
    Please examine %(limbo_dir)s to see if it contains any files you wish to
    keep, and delete it when you are done."""

    def __init__(self, limbo_dir):
       BzrError.__init__(self)
       self.limbo_dir = limbo_dir


class ExistingPendingDeletion(BzrError):

    _fmt = """This tree contains left-over files from a failed operation.
    Please examine %(pending_deletion)s to see if it contains any files you
    wish to keep, and delete it when you are done."""

    def __init__(self, pending_deletion):
       BzrError.__init__(self, pending_deletion=pending_deletion)


class ImmortalLimbo(BzrError):

    _fmt = """Unable to delete transform temporary directory %(limbo_dir)s.
    Please examine %(limbo_dir)s to see if it contains any files you wish to
    keep, and delete it when you are done."""

    def __init__(self, limbo_dir):
       BzrError.__init__(self)
       self.limbo_dir = limbo_dir


class ImmortalPendingDeletion(BzrError):

    _fmt = ("Unable to delete transform temporary directory "
    "%(pending_deletion)s.  Please examine %(pending_deletion)s to see if it "
    "contains any files you wish to keep, and delete it when you are done.")

    def __init__(self, pending_deletion):
       BzrError.__init__(self, pending_deletion=pending_deletion)


class OutOfDateTree(BzrError):

    _fmt = "Working tree is out of date, please run 'bzr update'.%(more)s"

    def __init__(self, tree, more=None):
        if more is None:
            more = ''
        else:
            more = ' ' + more
        BzrError.__init__(self)
        self.tree = tree
        self.more = more


class PublicBranchOutOfDate(BzrError):

    _fmt = 'Public branch "%(public_location)s" lacks revision '\
        '"%(revstring)s".'

    def __init__(self, public_location, revstring):
        import bzrlib.urlutils as urlutils
        public_location = urlutils.unescape_for_display(public_location,
                                                        'ascii')
        BzrError.__init__(self, public_location=public_location,
                          revstring=revstring)


class MergeModifiedFormatError(BzrError):

    _fmt = "Error in merge modified format"


class ConflictFormatError(BzrError):

    _fmt = "Format error in conflict listings"


class CorruptDirstate(BzrError):

    _fmt = ("Inconsistency in dirstate file %(dirstate_path)s.\n"
            "Error: %(description)s")

    def __init__(self, dirstate_path, description):
        BzrError.__init__(self)
        self.dirstate_path = dirstate_path
        self.description = description


class CorruptRepository(BzrError):

    _fmt = ("An error has been detected in the repository %(repo_path)s.\n"
            "Please run bzr reconcile on this repository.")

    def __init__(self, repo):
        BzrError.__init__(self)
        self.repo_path = repo.user_url


class InconsistentDelta(BzrError):
    """Used when we get a delta that is not valid."""

    _fmt = ("An inconsistent delta was supplied involving %(path)r,"
            " %(file_id)r\nreason: %(reason)s")

    def __init__(self, path, file_id, reason):
        BzrError.__init__(self)
        self.path = path
        self.file_id = file_id
        self.reason = reason


class InconsistentDeltaDelta(InconsistentDelta):
    """Used when we get a delta that is not valid."""

    _fmt = ("An inconsistent delta was supplied: %(delta)r"
            "\nreason: %(reason)s")

    def __init__(self, delta, reason):
        BzrError.__init__(self)
        self.delta = delta
        self.reason = reason


class UpgradeRequired(BzrError):

    _fmt = "To use this feature you must upgrade your branch at %(path)s."

    def __init__(self, path):
        BzrError.__init__(self)
        self.path = path


class RepositoryUpgradeRequired(UpgradeRequired):

    _fmt = "To use this feature you must upgrade your repository at %(path)s."


class RichRootUpgradeRequired(UpgradeRequired):

    _fmt = ("To use this feature you must upgrade your branch at %(path)s to"
           " a format which supports rich roots.")


class LocalRequiresBoundBranch(BzrError):

    _fmt = "Cannot perform local-only commits on unbound branches."


class UnsupportedOperation(BzrError):

    _fmt = ("The method %(mname)s is not supported on"
            " objects of type %(tname)s.")

    def __init__(self, method, method_self):
        self.method = method
        self.mname = method.__name__
        self.tname = type(method_self).__name__


class CannotSetRevisionId(UnsupportedOperation):
    """Raised when a commit is attempting to set a revision id but cant."""


class NonAsciiRevisionId(UnsupportedOperation):
    """Raised when a commit is attempting to set a non-ascii revision id
       but cant.
    """


class GhostTagsNotSupported(BzrError):

    _fmt = "Ghost tags not supported by format %(format)r."

    def __init__(self, format):
        self.format = format


class BinaryFile(BzrError):

    _fmt = "File is binary but should be text."


class IllegalPath(BzrError):

    _fmt = "The path %(path)s is not permitted on this platform"

    def __init__(self, path):
        BzrError.__init__(self)
        self.path = path


class TestamentMismatch(BzrError):

    _fmt = """Testament did not match expected value.
       For revision_id {%(revision_id)s}, expected {%(expected)s}, measured
       {%(measured)s}"""

    def __init__(self, revision_id, expected, measured):
        self.revision_id = revision_id
        self.expected = expected
        self.measured = measured


class NotABundle(BzrError):

    _fmt = "Not a bzr revision-bundle: %(text)r"

    def __init__(self, text):
        BzrError.__init__(self)
        self.text = text


class BadBundle(BzrError):

    _fmt = "Bad bzr revision-bundle: %(text)r"

    def __init__(self, text):
        BzrError.__init__(self)
        self.text = text


class MalformedHeader(BadBundle):

    _fmt = "Malformed bzr revision-bundle header: %(text)r"


class MalformedPatches(BadBundle):

    _fmt = "Malformed patches in bzr revision-bundle: %(text)r"


class MalformedFooter(BadBundle):

    _fmt = "Malformed footer in bzr revision-bundle: %(text)r"


class UnsupportedEOLMarker(BadBundle):

    _fmt = "End of line marker was not \\n in bzr revision-bundle"

    def __init__(self):
        # XXX: BadBundle's constructor assumes there's explanatory text,
        # but for this there is not
        BzrError.__init__(self)


class IncompatibleBundleFormat(BzrError):

    _fmt = "Bundle format %(bundle_format)s is incompatible with %(other)s"

    def __init__(self, bundle_format, other):
        BzrError.__init__(self)
        self.bundle_format = bundle_format
        self.other = other


class BadInventoryFormat(BzrError):

    _fmt = "Root class for inventory serialization errors"


class UnexpectedInventoryFormat(BadInventoryFormat):

    _fmt = "The inventory was not in the expected format:\n %(msg)s"

    def __init__(self, msg):
        BadInventoryFormat.__init__(self, msg=msg)


class RootNotRich(BzrError):

    _fmt = """This operation requires rich root data storage"""


class NoSmartMedium(InternalBzrError):

    _fmt = "The transport '%(transport)s' cannot tunnel the smart protocol."

    def __init__(self, transport):
        self.transport = transport


class UnknownSSH(BzrError):

    _fmt = "Unrecognised value for BZR_SSH environment variable: %(vendor)s"

    def __init__(self, vendor):
        BzrError.__init__(self)
        self.vendor = vendor


class SSHVendorNotFound(BzrError):

    _fmt = ("Don't know how to handle SSH connections."
            " Please set BZR_SSH environment variable.")


class GhostRevisionsHaveNoRevno(BzrError):
    """When searching for revnos, if we encounter a ghost, we are stuck"""

    _fmt = ("Could not determine revno for {%(revision_id)s} because"
            " its ancestry shows a ghost at {%(ghost_revision_id)s}")

    def __init__(self, revision_id, ghost_revision_id):
        self.revision_id = revision_id
        self.ghost_revision_id = ghost_revision_id


class GhostRevisionUnusableHere(BzrError):

    _fmt = "Ghost revision {%(revision_id)s} cannot be used here."

    def __init__(self, revision_id):
        BzrError.__init__(self)
        self.revision_id = revision_id


class IllegalUseOfScopeReplacer(InternalBzrError):

    _fmt = ("ScopeReplacer object %(name)r was used incorrectly:"
            " %(msg)s%(extra)s")

    def __init__(self, name, msg, extra=None):
        BzrError.__init__(self)
        self.name = name
        self.msg = msg
        if extra:
            self.extra = ': ' + str(extra)
        else:
            self.extra = ''


class InvalidImportLine(InternalBzrError):

    _fmt = "Not a valid import statement: %(msg)\n%(text)s"

    def __init__(self, text, msg):
        BzrError.__init__(self)
        self.text = text
        self.msg = msg


class ImportNameCollision(InternalBzrError):

    _fmt = ("Tried to import an object to the same name as"
            " an existing object. %(name)s")

    def __init__(self, name):
        BzrError.__init__(self)
        self.name = name


class NotAMergeDirective(BzrError):
    """File starting with %(firstline)r is not a merge directive"""
    def __init__(self, firstline):
        BzrError.__init__(self, firstline=firstline)


class NoMergeSource(BzrError):
    """Raise if no merge source was specified for a merge directive"""

    _fmt = "A merge directive must provide either a bundle or a public"\
        " branch location."


class IllegalMergeDirectivePayload(BzrError):
    """A merge directive contained something other than a patch or bundle"""

    _fmt = "Bad merge directive payload %(start)r"

    def __init__(self, start):
        BzrError(self)
        self.start = start


class PatchVerificationFailed(BzrError):
    """A patch from a merge directive could not be verified"""

    _fmt = "Preview patch does not match requested changes."


class PatchMissing(BzrError):
    """Raise a patch type was specified but no patch supplied"""

    _fmt = "Patch_type was %(patch_type)s, but no patch was supplied."

    def __init__(self, patch_type):
        BzrError.__init__(self)
        self.patch_type = patch_type


class TargetNotBranch(BzrError):
    """A merge directive's target branch is required, but isn't a branch"""

    _fmt = ("Your branch does not have all of the revisions required in "
            "order to merge this merge directive and the target "
            "location specified in the merge directive is not a branch: "
            "%(location)s.")

    def __init__(self, location):
        BzrError.__init__(self)
        self.location = location


class UnsupportedInventoryKind(BzrError):

    _fmt = """Unsupported entry kind %(kind)s"""

    def __init__(self, kind):
        self.kind = kind


class BadSubsumeSource(BzrError):

    _fmt = "Can't subsume %(other_tree)s into %(tree)s. %(reason)s"

    def __init__(self, tree, other_tree, reason):
        self.tree = tree
        self.other_tree = other_tree
        self.reason = reason


class SubsumeTargetNeedsUpgrade(BzrError):

    _fmt = """Subsume target %(other_tree)s needs to be upgraded."""

    def __init__(self, other_tree):
        self.other_tree = other_tree


class BadReferenceTarget(InternalBzrError):

    _fmt = "Can't add reference to %(other_tree)s into %(tree)s." \
           "%(reason)s"

    def __init__(self, tree, other_tree, reason):
        self.tree = tree
        self.other_tree = other_tree
        self.reason = reason


class NoSuchTag(BzrError):

    _fmt = "No such tag: %(tag_name)s"

    def __init__(self, tag_name):
        self.tag_name = tag_name


class TagsNotSupported(BzrError):

    _fmt = ("Tags not supported by %(branch)s;"
            " you may be able to use bzr upgrade.")

    def __init__(self, branch):
        self.branch = branch


class TagAlreadyExists(BzrError):

    _fmt = "Tag %(tag_name)s already exists."

    def __init__(self, tag_name):
        self.tag_name = tag_name


class MalformedBugIdentifier(BzrError):

    _fmt = ('Did not understand bug identifier %(bug_id)s: %(reason)s. '
            'See "bzr help bugs" for more information on this feature.')

    def __init__(self, bug_id, reason):
        self.bug_id = bug_id
        self.reason = reason


class InvalidBugTrackerURL(BzrError):

    _fmt = ("The URL for bug tracker \"%(abbreviation)s\" doesn't "
            "contain {id}: %(url)s")

    def __init__(self, abbreviation, url):
        self.abbreviation = abbreviation
        self.url = url


class UnknownBugTrackerAbbreviation(BzrError):

    _fmt = ("Cannot find registered bug tracker called %(abbreviation)s "
            "on %(branch)s")

    def __init__(self, abbreviation, branch):
        self.abbreviation = abbreviation
        self.branch = branch


class InvalidLineInBugsProperty(BzrError):

    _fmt = ("Invalid line in bugs property: '%(line)s'")

    def __init__(self, line):
        self.line = line


class InvalidBugStatus(BzrError):

    _fmt = ("Invalid bug status: '%(status)s'")

    def __init__(self, status):
        self.status = status


class UnexpectedSmartServerResponse(BzrError):

    _fmt = "Could not understand response from smart server: %(response_tuple)r"

    def __init__(self, response_tuple):
        self.response_tuple = response_tuple


class ErrorFromSmartServer(BzrError):
    """An error was received from a smart server.

    :seealso: UnknownErrorFromSmartServer
    """

    _fmt = "Error received from smart server: %(error_tuple)r"

    internal_error = True

    def __init__(self, error_tuple):
        self.error_tuple = error_tuple
        try:
            self.error_verb = error_tuple[0]
        except IndexError:
            self.error_verb = None
        self.error_args = error_tuple[1:]


class UnknownErrorFromSmartServer(BzrError):
    """An ErrorFromSmartServer could not be translated into a typical bzrlib
    error.

    This is distinct from ErrorFromSmartServer so that it is possible to
    distinguish between the following two cases:

    - ErrorFromSmartServer was uncaught.  This is logic error in the client
      and so should provoke a traceback to the user.
    - ErrorFromSmartServer was caught but its error_tuple could not be
      translated.  This is probably because the server sent us garbage, and
      should not provoke a traceback.
    """

    _fmt = "Server sent an unexpected error: %(error_tuple)r"

    internal_error = False

    def __init__(self, error_from_smart_server):
        """Constructor.

        :param error_from_smart_server: An ErrorFromSmartServer instance.
        """
        self.error_from_smart_server = error_from_smart_server
        self.error_tuple = error_from_smart_server.error_tuple


class ContainerError(BzrError):
    """Base class of container errors."""


class UnknownContainerFormatError(ContainerError):

    _fmt = "Unrecognised container format: %(container_format)r"

    def __init__(self, container_format):
        self.container_format = container_format


class UnexpectedEndOfContainerError(ContainerError):

    _fmt = "Unexpected end of container stream"


class UnknownRecordTypeError(ContainerError):

    _fmt = "Unknown record type: %(record_type)r"

    def __init__(self, record_type):
        self.record_type = record_type


class InvalidRecordError(ContainerError):

    _fmt = "Invalid record: %(reason)s"

    def __init__(self, reason):
        self.reason = reason


class ContainerHasExcessDataError(ContainerError):

    _fmt = "Container has data after end marker: %(excess)r"

    def __init__(self, excess):
        self.excess = excess


class DuplicateRecordNameError(ContainerError):

    _fmt = "Container has multiple records with the same name: %(name)s"

    def __init__(self, name):
        self.name = name.decode("utf-8")


class NoDestinationAddress(InternalBzrError):

    _fmt = "Message does not have a destination address."


class RepositoryDataStreamError(BzrError):

    _fmt = "Corrupt or incompatible data stream: %(reason)s"

    def __init__(self, reason):
        self.reason = reason


class SMTPError(BzrError):

    _fmt = "SMTP error: %(error)s"

    def __init__(self, error):
        self.error = error


class NoMessageSupplied(BzrError):

    _fmt = "No message supplied."


class NoMailAddressSpecified(BzrError):

    _fmt = "No mail-to address (--mail-to) or output (-o) specified."


class MailClientNotFound(BzrError):

    _fmt = "Unable to find mail client with the following names:"\
        " %(mail_command_list_string)s"

    def __init__(self, mail_command_list):
        mail_command_list_string = ', '.join(mail_command_list)
        BzrError.__init__(self, mail_command_list=mail_command_list,
                          mail_command_list_string=mail_command_list_string)

class SMTPConnectionRefused(SMTPError):

    _fmt = "SMTP connection to %(host)s refused"

    def __init__(self, error, host):
        self.error = error
        self.host = host


class DefaultSMTPConnectionRefused(SMTPConnectionRefused):

    _fmt = "Please specify smtp_server.  No server at default %(host)s."


class BzrDirError(BzrError):

    def __init__(self, bzrdir):
        import bzrlib.urlutils as urlutils
        display_url = urlutils.unescape_for_display(bzrdir.user_url,
                                                    'ascii')
        BzrError.__init__(self, bzrdir=bzrdir, display_url=display_url)


class UnsyncedBranches(BzrDirError):

    _fmt = ("'%(display_url)s' is not in sync with %(target_url)s.  See"
            " bzr help sync-for-reconfigure.")

    def __init__(self, bzrdir, target_branch):
        BzrDirError.__init__(self, bzrdir)
        import bzrlib.urlutils as urlutils
        self.target_url = urlutils.unescape_for_display(target_branch.base,
                                                        'ascii')


class AlreadyBranch(BzrDirError):

    _fmt = "'%(display_url)s' is already a branch."


class AlreadyTree(BzrDirError):

    _fmt = "'%(display_url)s' is already a tree."


class AlreadyCheckout(BzrDirError):

    _fmt = "'%(display_url)s' is already a checkout."


class AlreadyLightweightCheckout(BzrDirError):

    _fmt = "'%(display_url)s' is already a lightweight checkout."


class AlreadyUsingShared(BzrDirError):

    _fmt = "'%(display_url)s' is already using a shared repository."


class AlreadyStandalone(BzrDirError):

    _fmt = "'%(display_url)s' is already standalone."


class AlreadyWithTrees(BzrDirError):

    _fmt = ("Shared repository '%(display_url)s' already creates "
            "working trees.")


class AlreadyWithNoTrees(BzrDirError):

    _fmt = ("Shared repository '%(display_url)s' already doesn't create "
            "working trees.")


class ReconfigurationNotSupported(BzrDirError):

    _fmt = "Requested reconfiguration of '%(display_url)s' is not supported."


class NoBindLocation(BzrDirError):

    _fmt = "No location could be found to bind to at %(display_url)s."


class UncommittedChanges(BzrError):

    _fmt = ('Working tree "%(display_url)s" has uncommitted changes'
            ' (See bzr status).%(more)s')

    def __init__(self, tree, more=None):
        if more is None:
            more = ''
        else:
            more = ' ' + more
        import bzrlib.urlutils as urlutils
        user_url = getattr(tree, "user_url", None)
        if user_url is None:
            display_url = str(tree)
        else:
            display_url = urlutils.unescape_for_display(user_url, 'ascii')
        BzrError.__init__(self, tree=tree, display_url=display_url, more=more)


class StoringUncommittedNotSupported(BzrError):

    _fmt = ('Branch "%(display_url)s" does not support storing uncommitted'
            ' changes.')

    def __init__(self, branch):
        import bzrlib.urlutils as urlutils
        user_url = getattr(branch, "user_url", None)
        if user_url is None:
            display_url = str(branch)
        else:
            display_url = urlutils.unescape_for_display(user_url, 'ascii')
        BzrError.__init__(self, branch=branch, display_url=display_url)


class ShelvedChanges(UncommittedChanges):

    _fmt = ('Working tree "%(display_url)s" has shelved changes'
            ' (See bzr shelve --list).%(more)s')


class MissingTemplateVariable(BzrError):

    _fmt = 'Variable {%(name)s} is not available.'

    def __init__(self, name):
        self.name = name


class NoTemplate(BzrError):

    _fmt = 'No template specified.'


class UnableCreateSymlink(BzrError):

    _fmt = 'Unable to create symlink %(path_str)son this platform'

    def __init__(self, path=None):
        path_str = ''
        if path:
            try:
                path_str = repr(str(path))
            except UnicodeEncodeError:
                path_str = repr(path)
            path_str += ' '
        self.path_str = path_str


class UnsupportedTimezoneFormat(BzrError):

    _fmt = ('Unsupported timezone format "%(timezone)s", '
            'options are "utc", "original", "local".')

    def __init__(self, timezone):
        self.timezone = timezone


class CommandAvailableInPlugin(StandardError):

    internal_error = False

    def __init__(self, cmd_name, plugin_metadata, provider):

        self.plugin_metadata = plugin_metadata
        self.cmd_name = cmd_name
        self.provider = provider

    def __str__(self):

        _fmt = ('"%s" is not a standard bzr command. \n'
                'However, the following official plugin provides this command: %s\n'
                'You can install it by going to: %s'
                % (self.cmd_name, self.plugin_metadata['name'],
                    self.plugin_metadata['url']))

        return _fmt


class NoPluginAvailable(BzrError):
    pass


class UnableEncodePath(BzrError):

    _fmt = ('Unable to encode %(kind)s path %(path)r in '
            'user encoding %(user_encoding)s')

    def __init__(self, path, kind):
        from bzrlib.osutils import get_user_encoding
        self.path = path
        self.kind = kind
        self.user_encoding = get_user_encoding()


class NoSuchConfig(BzrError):

    _fmt = ('The "%(config_id)s" configuration does not exist.')

    def __init__(self, config_id):
        BzrError.__init__(self, config_id=config_id)


class NoSuchConfigOption(BzrError):

    _fmt = ('The "%(option_name)s" configuration option does not exist.')

    def __init__(self, option_name):
        BzrError.__init__(self, option_name=option_name)


class NoSuchAlias(BzrError):

    _fmt = ('The alias "%(alias_name)s" does not exist.')

    def __init__(self, alias_name):
        BzrError.__init__(self, alias_name=alias_name)


class DirectoryLookupFailure(BzrError):
    """Base type for lookup errors."""

    pass


class InvalidLocationAlias(DirectoryLookupFailure):

    _fmt = '"%(alias_name)s" is not a valid location alias.'

    def __init__(self, alias_name):
        DirectoryLookupFailure.__init__(self, alias_name=alias_name)


class UnsetLocationAlias(DirectoryLookupFailure):

    _fmt = 'No %(alias_name)s location assigned.'

    def __init__(self, alias_name):
        DirectoryLookupFailure.__init__(self, alias_name=alias_name[1:])


class CannotBindAddress(BzrError):

    _fmt = 'Cannot bind address "%(host)s:%(port)i": %(orig_error)s.'

    def __init__(self, host, port, orig_error):
        # nb: in python2.4 socket.error doesn't have a useful repr
        BzrError.__init__(self, host=host, port=port,
            orig_error=repr(orig_error.args))


class UnknownRules(BzrError):

    _fmt = ('Unknown rules detected: %(unknowns_str)s.')

    def __init__(self, unknowns):
        BzrError.__init__(self, unknowns_str=", ".join(unknowns))


class TipChangeRejected(BzrError):
    """A pre_change_branch_tip hook function may raise this to cleanly and
    explicitly abort a change to a branch tip.
    """

    _fmt = u"Tip change rejected: %(msg)s"

    def __init__(self, msg):
        self.msg = msg


class ShelfCorrupt(BzrError):

    _fmt = "Shelf corrupt."


class DecompressCorruption(BzrError):

    _fmt = "Corruption while decompressing repository file%(orig_error)s"

    def __init__(self, orig_error=None):
        if orig_error is not None:
            self.orig_error = ", %s" % (orig_error,)
        else:
            self.orig_error = ""
        BzrError.__init__(self)


class NoSuchShelfId(BzrError):

    _fmt = 'No changes are shelved with id "%(shelf_id)d".'

    def __init__(self, shelf_id):
        BzrError.__init__(self, shelf_id=shelf_id)


class InvalidShelfId(BzrError):

    _fmt = '"%(invalid_id)s" is not a valid shelf id, try a number instead.'

    def __init__(self, invalid_id):
        BzrError.__init__(self, invalid_id=invalid_id)


class JailBreak(BzrError):

    _fmt = "An attempt to access a url outside the server jail was made: '%(url)s'."

    def __init__(self, url):
        BzrError.__init__(self, url=url)


class UserAbort(BzrError):

    _fmt = 'The user aborted the operation.'


class MustHaveWorkingTree(BzrError):

    _fmt = ("Branching '%(url)s'(%(format)s) must create a working tree.")

    def __init__(self, format, url):
        BzrError.__init__(self, format=format, url=url)


class NoSuchView(BzrError):
    """A view does not exist.
    """

    _fmt = u"No such view: %(view_name)s."

    def __init__(self, view_name):
        self.view_name = view_name


class ViewsNotSupported(BzrError):
    """Views are not supported by a tree format.
    """

    _fmt = ("Views are not supported by %(tree)s;"
            " use 'bzr upgrade' to change your tree to a later format.")

    def __init__(self, tree):
        self.tree = tree


class FileOutsideView(BzrError):

    _fmt = ('Specified file "%(file_name)s" is outside the current view: '
            '%(view_str)s')

    def __init__(self, file_name, view_files):
        self.file_name = file_name
        self.view_str = ", ".join(view_files)


class UnresumableWriteGroup(BzrError):

    _fmt = ("Repository %(repository)s cannot resume write group "
            "%(write_groups)r: %(reason)s")

    internal_error = True

    def __init__(self, repository, write_groups, reason):
        self.repository = repository
        self.write_groups = write_groups
        self.reason = reason


class UnsuspendableWriteGroup(BzrError):

    _fmt = ("Repository %(repository)s cannot suspend a write group.")

    internal_error = True

    def __init__(self, repository):
        self.repository = repository


class LossyPushToSameVCS(BzrError):

    _fmt = ("Lossy push not possible between %(source_branch)r and "
            "%(target_branch)r that are in the same VCS.")

    internal_error = True

    def __init__(self, source_branch, target_branch):
        self.source_branch = source_branch
        self.target_branch = target_branch


class NoRoundtrippingSupport(BzrError):

    _fmt = ("Roundtripping is not supported between %(source_branch)r and "
            "%(target_branch)r.")

    internal_error = True

    def __init__(self, source_branch, target_branch):
        self.source_branch = source_branch
        self.target_branch = target_branch


class FileTimestampUnavailable(BzrError):

    _fmt = "The filestamp for %(path)s is not available."

    internal_error = True

    def __init__(self, path):
        self.path = path


class NoColocatedBranchSupport(BzrError):

    _fmt = ("%(bzrdir)r does not support co-located branches.")

    def __init__(self, bzrdir):
        self.bzrdir = bzrdir


class NoWhoami(BzrError):

    _fmt = ('Unable to determine your name.\n'
        "Please, set your name with the 'whoami' command.\n"
        'E.g. bzr whoami "Your Name <name@example.com>"')


class InvalidPattern(BzrError):

    _fmt = ('Invalid pattern(s) found. %(msg)s')

    def __init__(self, msg):
        self.msg = msg


class RecursiveBind(BzrError):

    _fmt = ('Branch "%(branch_url)s" appears to be bound to itself. '
        'Please use `bzr unbind` to fix.')

    def __init__(self, branch_url):
        self.branch_url = branch_url


# FIXME: I would prefer to define the config related exception classes in
# config.py but the lazy import mechanism proscribes this -- vila 20101222
class OptionExpansionLoop(BzrError):

    _fmt = 'Loop involving %(refs)r while expanding "%(string)s".'

    def __init__(self, string, refs):
        self.string = string
        self.refs = '->'.join(refs)


class ExpandingUnknownOption(BzrError):

    _fmt = 'Option %(name)s is not defined while expanding "%(string)s".'

    def __init__(self, name, string):
        self.name = name
        self.string = string


class NoCompatibleInter(BzrError):

    _fmt = ('No compatible object available for operations from %(source)r '
            'to %(target)r.')

    def __init__(self, source, target):
        self.source = source
        self.target = target


class HpssVfsRequestNotAllowed(BzrError):

    _fmt = ("VFS requests over the smart server are not allowed. Encountered: "
            "%(method)s, %(arguments)s.")

    def __init__(self, method, arguments):
        self.method = method
        self.arguments = arguments


class UnsupportedKindChange(BzrError):

    _fmt = ("Kind change from %(from_kind)s to %(to_kind)s for "
            "%(path)s not supported by format %(format)r")

    def __init__(self, path, from_kind, to_kind, format):
        self.path = path
        self.from_kind = from_kind
        self.to_kind = to_kind
        self.format = format


class MissingFeature(BzrError):

    _fmt = ("Missing feature %(feature)s not provided by this "
            "version of Bazaar or any plugin.")

    def __init__(self, feature):
        self.feature = feature


class PatchSyntax(BzrError):
    """Base class for patch syntax errors."""


class BinaryFiles(BzrError):

    _fmt = 'Binary files section encountered.'

    def __init__(self, orig_name, mod_name):
        self.orig_name = orig_name
        self.mod_name = mod_name


class MalformedPatchHeader(PatchSyntax):

    _fmt = "Malformed patch header.  %(desc)s\n%(line)r"

    def __init__(self, desc, line):
        self.desc = desc
        self.line = line


class MalformedHunkHeader(PatchSyntax):

    _fmt = "Malformed hunk header.  %(desc)s\n%(line)r"

    def __init__(self, desc, line):
        self.desc = desc
        self.line = line


class MalformedLine(PatchSyntax):

    _fmt = "Malformed line.  %(desc)s\n%(line)r"

    def __init__(self, desc, line):
        self.desc = desc
        self.line = line


class PatchConflict(BzrError):

    _fmt = ('Text contents mismatch at line %(line_no)d.  Original has '
            '"%(orig_line)s", but patch says it should be "%(patch_line)s"')

    def __init__(self, line_no, orig_line, patch_line):
        self.line_no = line_no
        self.orig_line = orig_line.rstrip('\n')
        self.patch_line = patch_line.rstrip('\n')


class FeatureAlreadyRegistered(BzrError):

    _fmt = 'The feature %(feature)s has already been registered.'

    def __init__(self, feature):
        self.feature = feature


class ChangesAlreadyStored(BzrCommandError):

    _fmt = ('Cannot store uncommitted changes because this branch already'
            ' stores uncommitted changes.')