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
3364
3365
3366
3367
3368
3369
3370
3371
3372
3373
3374
3375
3376
3377
3378
3379
3380
3381
3382
3383
3384
3385
3386
3387
3388
3389
3390
3391
3392
3393
3394
3395
3396
3397
3398
3399
3400
3401
3402
3403
3404
3405
3406
3407
3408
3409
3410
3411
3412
3413
3414
3415
3416
3417
3418
3419
3420
3421
3422
3423
3424
3425
3426
3427
3428
3429
3430
3431
3432
3433
3434
3435
3436
3437
3438
3439
3440
3441
3442
3443
3444
3445
3446
3447
3448
3449
3450
3451
3452
3453
3454
3455
3456
3457
3458
3459
3460
3461
3462
3463
3464
3465
3466
3467
3468
3469
3470
3471
3472
3473
3474
3475
3476
3477
3478
3479
3480
3481
3482
3483
3484
3485
3486
3487
3488
3489
3490
3491
3492
3493
3494
3495
3496
3497
3498
3499
3500
3501
3502
3503
3504
3505
3506
3507
3508
3509
3510
3511
3512
3513
3514
3515
3516
3517
3518
3519
3520
3521
3522
3523
3524
3525
3526
3527
3528
3529
3530
3531
3532
3533
3534
3535
3536
3537
3538
3539
3540
3541
3542
3543
3544
3545
3546
3547
3548
3549
3550
3551
3552
3553
3554
3555
3556
3557
3558
3559
3560
3561
3562
3563
3564
3565
3566
3567
3568
3569
3570
3571
3572
3573
3574
3575
3576
3577
3578
3579
3580
3581
3582
3583
3584
3585
3586
3587
3588
3589
3590
3591
3592
3593
3594
3595
3596
3597
3598
3599
3600
3601
3602
3603
3604
3605
3606
3607
3608
3609
3610
3611
3612
3613
3614
3615
3616
3617
3618
3619
3620
3621
3622
3623
3624
3625
3626
3627
3628
3629
3630
3631
3632
3633
3634
3635
3636
3637
3638
3639
3640
3641
3642
3643
3644
3645
3646
3647
3648
3649
3650
3651
3652
3653
3654
3655
3656
3657
3658
3659
3660
3661
3662
3663
3664
3665
3666
3667
3668
3669
3670
3671
3672
3673
3674
3675
3676
3677
3678
3679
3680
3681
3682
3683
3684
3685
3686
3687
3688
3689
3690
3691
3692
3693
3694
3695
3696
3697
3698
3699
3700
3701
3702
3703
3704
3705
3706
3707
3708
3709
3710
3711
3712
3713
3714
3715
3716
3717
3718
3719
3720
3721
3722
3723
3724
3725
3726
3727
3728
3729
3730
3731
3732
3733
3734
3735
3736
3737
3738
3739
3740
3741
3742
3743
3744
3745
3746
3747
3748
3749
3750
3751
3752
3753
3754
3755
3756
3757
3758
3759
3760
3761
3762
3763
3764
3765
3766
3767
3768
3769
3770
3771
3772
3773
3774
3775
3776
3777
3778
3779
3780
3781
3782
3783
3784
3785
3786
3787
3788
3789
3790
3791
3792
3793
3794
3795
3796
3797
3798
3799
3800
3801
3802
3803
3804
3805
3806
3807
3808
3809
3810
3811
3812
3813
3814
3815
3816
3817
3818
3819
3820
3821
3822
3823
3824
3825
3826
3827
3828
3829
3830
3831
3832
3833
3834
3835
3836
3837
3838
3839
3840
3841
3842
3843
3844
3845
3846
3847
3848
3849
3850
3851
3852
3853
3854
3855
3856
3857
3858
3859
3860
3861
3862
3863
3864
3865
3866
3867
3868
3869
3870
3871
3872
3873
3874
3875
3876
3877
3878
3879
3880
3881
3882
3883
3884
3885
3886
3887
3888
3889
3890
3891
3892
3893
3894
3895
3896
3897
3898
3899
3900
3901
3902
3903
3904
3905
3906
3907
3908
3909
3910
3911
3912
3913
3914
3915
3916
3917
3918
3919
3920
3921
3922
3923
3924
3925
3926
3927
3928
3929
3930
3931
3932
3933
3934
3935
3936
3937
3938
3939
3940
3941
3942
3943
3944
3945
3946
3947
3948
3949
3950
3951
3952
3953
3954
3955
3956
3957
3958
3959
3960
3961
3962
3963
3964
3965
3966
3967
3968
3969
3970
3971
3972
3973
3974
3975
3976
3977
3978
3979
3980
3981
3982
3983
3984
3985
3986
3987
3988
3989
3990
3991
3992
3993
3994
3995
3996
3997
3998
3999
4000
4001
4002
4003
4004
|
/** @file
Provides interface to shell functionality for shell commands and applications.
Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include "UefiShellLib.h"
#include <ShellBase.h>
#include <Library/SortLib.h>
#define FIND_XXXXX_FILE_BUFFER_SIZE (SIZE_OF_EFI_FILE_INFO + MAX_FILE_NAME_LEN)
//
// globals...
//
SHELL_PARAM_ITEM EmptyParamList[] = {
{NULL, TypeMax}
};
SHELL_PARAM_ITEM SfoParamList[] = {
{L"-sfo", TypeFlag},
{NULL, TypeMax}
};
EFI_SHELL_ENVIRONMENT2 *mEfiShellEnvironment2;
EFI_SHELL_INTERFACE *mEfiShellInterface;
EFI_SHELL_PROTOCOL *gEfiShellProtocol;
EFI_SHELL_PARAMETERS_PROTOCOL *gEfiShellParametersProtocol;
EFI_HANDLE mEfiShellEnvironment2Handle;
FILE_HANDLE_FUNCTION_MAP FileFunctionMap;
/**
Check if a Unicode character is a hexadecimal character.
This internal function checks if a Unicode character is a
numeric character. The valid hexadecimal characters are
L'0' to L'9', L'a' to L'f', or L'A' to L'F'.
@param Char The character to check against.
@retval TRUE If the Char is a hexadecmial character.
@retval FALSE If the Char is not a hexadecmial character.
**/
BOOLEAN
EFIAPI
ShellIsHexaDecimalDigitCharacter (
IN CHAR16 Char
)
{
return (BOOLEAN) ((Char >= L'0' && Char <= L'9') || (Char >= L'A' && Char <= L'F') || (Char >= L'a' && Char <= L'f'));
}
/**
Check if a Unicode character is a decimal character.
This internal function checks if a Unicode character is a
decimal character. The valid characters are
L'0' to L'9'.
@param Char The character to check against.
@retval TRUE If the Char is a hexadecmial character.
@retval FALSE If the Char is not a hexadecmial character.
**/
BOOLEAN
EFIAPI
ShellIsDecimalDigitCharacter (
IN CHAR16 Char
)
{
return (BOOLEAN) (Char >= L'0' && Char <= L'9');
}
/**
Helper function to find ShellEnvironment2 for constructor.
@param[in] ImageHandle A copy of the calling image's handle.
@retval EFI_OUT_OF_RESOURCES Memory allocation failed.
**/
EFI_STATUS
EFIAPI
ShellFindSE2 (
IN EFI_HANDLE ImageHandle
)
{
EFI_STATUS Status;
EFI_HANDLE *Buffer;
UINTN BufferSize;
UINTN HandleIndex;
BufferSize = 0;
Buffer = NULL;
Status = gBS->OpenProtocol(ImageHandle,
&gEfiShellEnvironment2Guid,
(VOID **)&mEfiShellEnvironment2,
ImageHandle,
NULL,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
//
// look for the mEfiShellEnvironment2 protocol at a higher level
//
if (EFI_ERROR (Status) || !(CompareGuid (&mEfiShellEnvironment2->SESGuid, &gEfiShellEnvironment2ExtGuid))){
//
// figure out how big of a buffer we need.
//
Status = gBS->LocateHandle (ByProtocol,
&gEfiShellEnvironment2Guid,
NULL, // ignored for ByProtocol
&BufferSize,
Buffer
);
//
// maybe it's not there???
//
if (Status == EFI_BUFFER_TOO_SMALL) {
Buffer = (EFI_HANDLE*)AllocateZeroPool(BufferSize);
if (Buffer == NULL) {
return (EFI_OUT_OF_RESOURCES);
}
Status = gBS->LocateHandle (ByProtocol,
&gEfiShellEnvironment2Guid,
NULL, // ignored for ByProtocol
&BufferSize,
Buffer
);
}
if (!EFI_ERROR (Status) && Buffer != NULL) {
//
// now parse the list of returned handles
//
Status = EFI_NOT_FOUND;
for (HandleIndex = 0; HandleIndex < (BufferSize/sizeof(Buffer[0])); HandleIndex++) {
Status = gBS->OpenProtocol(Buffer[HandleIndex],
&gEfiShellEnvironment2Guid,
(VOID **)&mEfiShellEnvironment2,
ImageHandle,
NULL,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
if (CompareGuid (&mEfiShellEnvironment2->SESGuid, &gEfiShellEnvironment2ExtGuid)) {
mEfiShellEnvironment2Handle = Buffer[HandleIndex];
Status = EFI_SUCCESS;
break;
}
}
}
}
if (Buffer != NULL) {
FreePool (Buffer);
}
return (Status);
}
/**
Function to do most of the work of the constructor. Allows for calling
multiple times without complete re-initialization.
@param[in] ImageHandle A copy of the ImageHandle.
@param[in] SystemTable A pointer to the SystemTable for the application.
@retval EFI_SUCCESS The operationw as successful.
**/
EFI_STATUS
EFIAPI
ShellLibConstructorWorker (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
//
// UEFI 2.0 shell interfaces (used preferentially)
//
Status = gBS->OpenProtocol(
ImageHandle,
&gEfiShellProtocolGuid,
(VOID **)&gEfiShellProtocol,
ImageHandle,
NULL,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
if (EFI_ERROR(Status)) {
//
// Search for the shell protocol
//
Status = gBS->LocateProtocol(
&gEfiShellProtocolGuid,
NULL,
(VOID **)&gEfiShellProtocol
);
if (EFI_ERROR(Status)) {
gEfiShellProtocol = NULL;
}
}
Status = gBS->OpenProtocol(
ImageHandle,
&gEfiShellParametersProtocolGuid,
(VOID **)&gEfiShellParametersProtocol,
ImageHandle,
NULL,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
if (EFI_ERROR(Status)) {
gEfiShellParametersProtocol = NULL;
}
if (gEfiShellParametersProtocol == NULL || gEfiShellProtocol == NULL) {
//
// Moved to seperate function due to complexity
//
Status = ShellFindSE2(ImageHandle);
if (EFI_ERROR(Status)) {
DEBUG((DEBUG_ERROR, "Status: 0x%08x\r\n", Status));
mEfiShellEnvironment2 = NULL;
}
Status = gBS->OpenProtocol(ImageHandle,
&gEfiShellInterfaceGuid,
(VOID **)&mEfiShellInterface,
ImageHandle,
NULL,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
if (EFI_ERROR(Status)) {
mEfiShellInterface = NULL;
}
}
//
// only success getting 2 of either the old or new, but no 1/2 and 1/2
//
if ((mEfiShellEnvironment2 != NULL && mEfiShellInterface != NULL) ||
(gEfiShellProtocol != NULL && gEfiShellParametersProtocol != NULL) ) {
if (gEfiShellProtocol != NULL) {
FileFunctionMap.GetFileInfo = gEfiShellProtocol->GetFileInfo;
FileFunctionMap.SetFileInfo = gEfiShellProtocol->SetFileInfo;
FileFunctionMap.ReadFile = gEfiShellProtocol->ReadFile;
FileFunctionMap.WriteFile = gEfiShellProtocol->WriteFile;
FileFunctionMap.CloseFile = gEfiShellProtocol->CloseFile;
FileFunctionMap.DeleteFile = gEfiShellProtocol->DeleteFile;
FileFunctionMap.GetFilePosition = gEfiShellProtocol->GetFilePosition;
FileFunctionMap.SetFilePosition = gEfiShellProtocol->SetFilePosition;
FileFunctionMap.FlushFile = gEfiShellProtocol->FlushFile;
FileFunctionMap.GetFileSize = gEfiShellProtocol->GetFileSize;
} else {
FileFunctionMap.GetFileInfo = (EFI_SHELL_GET_FILE_INFO)FileHandleGetInfo;
FileFunctionMap.SetFileInfo = (EFI_SHELL_SET_FILE_INFO)FileHandleSetInfo;
FileFunctionMap.ReadFile = (EFI_SHELL_READ_FILE)FileHandleRead;
FileFunctionMap.WriteFile = (EFI_SHELL_WRITE_FILE)FileHandleWrite;
FileFunctionMap.CloseFile = (EFI_SHELL_CLOSE_FILE)FileHandleClose;
FileFunctionMap.DeleteFile = (EFI_SHELL_DELETE_FILE)FileHandleDelete;
FileFunctionMap.GetFilePosition = (EFI_SHELL_GET_FILE_POSITION)FileHandleGetPosition;
FileFunctionMap.SetFilePosition = (EFI_SHELL_SET_FILE_POSITION)FileHandleSetPosition;
FileFunctionMap.FlushFile = (EFI_SHELL_FLUSH_FILE)FileHandleFlush;
FileFunctionMap.GetFileSize = (EFI_SHELL_GET_FILE_SIZE)FileHandleGetSize;
}
return (EFI_SUCCESS);
}
return (EFI_NOT_FOUND);
}
/**
Constructor for the Shell library.
Initialize the library and determine if the underlying is a UEFI Shell 2.0 or an EFI shell.
@param ImageHandle the image handle of the process
@param SystemTable the EFI System Table pointer
@retval EFI_SUCCESS the initialization was complete sucessfully
@return others an error ocurred during initialization
**/
EFI_STATUS
EFIAPI
ShellLibConstructor (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
mEfiShellEnvironment2 = NULL;
gEfiShellProtocol = NULL;
gEfiShellParametersProtocol = NULL;
mEfiShellInterface = NULL;
mEfiShellEnvironment2Handle = NULL;
//
// verify that auto initialize is not set false
//
if (PcdGetBool(PcdShellLibAutoInitialize) == 0) {
return (EFI_SUCCESS);
}
return (ShellLibConstructorWorker(ImageHandle, SystemTable));
}
/**
Destructor for the library. free any resources.
@param[in] ImageHandle A copy of the ImageHandle.
@param[in] SystemTable A pointer to the SystemTable for the application.
@retval EFI_SUCCESS The operation was successful.
@return An error from the CloseProtocol function.
**/
EFI_STATUS
EFIAPI
ShellLibDestructor (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
if (mEfiShellEnvironment2 != NULL) {
gBS->CloseProtocol(mEfiShellEnvironment2Handle==NULL?ImageHandle:mEfiShellEnvironment2Handle,
&gEfiShellEnvironment2Guid,
ImageHandle,
NULL);
mEfiShellEnvironment2 = NULL;
}
if (mEfiShellInterface != NULL) {
gBS->CloseProtocol(ImageHandle,
&gEfiShellInterfaceGuid,
ImageHandle,
NULL);
mEfiShellInterface = NULL;
}
if (gEfiShellProtocol != NULL) {
gBS->CloseProtocol(ImageHandle,
&gEfiShellProtocolGuid,
ImageHandle,
NULL);
gEfiShellProtocol = NULL;
}
if (gEfiShellParametersProtocol != NULL) {
gBS->CloseProtocol(ImageHandle,
&gEfiShellParametersProtocolGuid,
ImageHandle,
NULL);
gEfiShellParametersProtocol = NULL;
}
mEfiShellEnvironment2Handle = NULL;
return (EFI_SUCCESS);
}
/**
This function causes the shell library to initialize itself. If the shell library
is already initialized it will de-initialize all the current protocol poitners and
re-populate them again.
When the library is used with PcdShellLibAutoInitialize set to true this function
will return EFI_SUCCESS and perform no actions.
This function is intended for internal access for shell commands only.
@retval EFI_SUCCESS the initialization was complete sucessfully
**/
EFI_STATUS
EFIAPI
ShellInitialize (
)
{
//
// if auto initialize is not false then skip
//
if (PcdGetBool(PcdShellLibAutoInitialize) != 0) {
return (EFI_SUCCESS);
}
//
// deinit the current stuff
//
ASSERT_EFI_ERROR(ShellLibDestructor(gImageHandle, gST));
//
// init the new stuff
//
return (ShellLibConstructorWorker(gImageHandle, gST));
}
/**
This function will retrieve the information about the file for the handle
specified and store it in allocated pool memory.
This function allocates a buffer to store the file's information. It is the
caller's responsibility to free the buffer
@param FileHandle The file handle of the file for which information is
being requested.
@retval NULL information could not be retrieved.
@return the information about the file
**/
EFI_FILE_INFO*
EFIAPI
ShellGetFileInfo (
IN SHELL_FILE_HANDLE FileHandle
)
{
return (FileFunctionMap.GetFileInfo(FileHandle));
}
/**
This function sets the information about the file for the opened handle
specified.
@param[in] FileHandle The file handle of the file for which information
is being set.
@param[in] FileInfo The information to set.
@retval EFI_SUCCESS The information was set.
@retval EFI_INVALID_PARAMETER A parameter was out of range or invalid.
@retval EFI_UNSUPPORTED The FileHandle does not support FileInfo.
@retval EFI_NO_MEDIA The device has no medium.
@retval EFI_DEVICE_ERROR The device reported an error.
@retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.
@retval EFI_WRITE_PROTECTED The file or medium is write protected.
@retval EFI_ACCESS_DENIED The file was opened read only.
@retval EFI_VOLUME_FULL The volume is full.
**/
EFI_STATUS
EFIAPI
ShellSetFileInfo (
IN SHELL_FILE_HANDLE FileHandle,
IN EFI_FILE_INFO *FileInfo
)
{
return (FileFunctionMap.SetFileInfo(FileHandle, FileInfo));
}
/**
This function will open a file or directory referenced by DevicePath.
This function opens a file with the open mode according to the file path. The
Attributes is valid only for EFI_FILE_MODE_CREATE.
@param FilePath on input the device path to the file. On output
the remaining device path.
@param DeviceHandle pointer to the system device handle.
@param FileHandle pointer to the file handle.
@param OpenMode the mode to open the file with.
@param Attributes the file's file attributes.
@retval EFI_SUCCESS The information was set.
@retval EFI_INVALID_PARAMETER One of the parameters has an invalid value.
@retval EFI_UNSUPPORTED Could not open the file path.
@retval EFI_NOT_FOUND The specified file could not be found on the
device or the file system could not be found on
the device.
@retval EFI_NO_MEDIA The device has no medium.
@retval EFI_MEDIA_CHANGED The device has a different medium in it or the
medium is no longer supported.
@retval EFI_DEVICE_ERROR The device reported an error.
@retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.
@retval EFI_WRITE_PROTECTED The file or medium is write protected.
@retval EFI_ACCESS_DENIED The file was opened read only.
@retval EFI_OUT_OF_RESOURCES Not enough resources were available to open the
file.
@retval EFI_VOLUME_FULL The volume is full.
**/
EFI_STATUS
EFIAPI
ShellOpenFileByDevicePath(
IN OUT EFI_DEVICE_PATH_PROTOCOL **FilePath,
OUT EFI_HANDLE *DeviceHandle,
OUT SHELL_FILE_HANDLE *FileHandle,
IN UINT64 OpenMode,
IN UINT64 Attributes
)
{
CHAR16 *FileName;
EFI_STATUS Status;
EFI_SIMPLE_FILE_SYSTEM_PROTOCOL *EfiSimpleFileSystemProtocol;
EFI_FILE_PROTOCOL *Handle1;
EFI_FILE_PROTOCOL *Handle2;
if (FilePath == NULL || FileHandle == NULL || DeviceHandle == NULL) {
return (EFI_INVALID_PARAMETER);
}
//
// which shell interface should we use
//
if (gEfiShellProtocol != NULL) {
//
// use UEFI Shell 2.0 method.
//
FileName = gEfiShellProtocol->GetFilePathFromDevicePath(*FilePath);
if (FileName == NULL) {
return (EFI_INVALID_PARAMETER);
}
Status = ShellOpenFileByName(FileName, FileHandle, OpenMode, Attributes);
FreePool(FileName);
return (Status);
}
//
// use old shell method.
//
Status = gBS->LocateDevicePath (&gEfiSimpleFileSystemProtocolGuid,
FilePath,
DeviceHandle);
if (EFI_ERROR (Status)) {
return Status;
}
Status = gBS->OpenProtocol(*DeviceHandle,
&gEfiSimpleFileSystemProtocolGuid,
(VOID**)&EfiSimpleFileSystemProtocol,
gImageHandle,
NULL,
EFI_OPEN_PROTOCOL_GET_PROTOCOL);
if (EFI_ERROR (Status)) {
return Status;
}
Status = EfiSimpleFileSystemProtocol->OpenVolume(EfiSimpleFileSystemProtocol, &Handle1);
if (EFI_ERROR (Status)) {
FileHandle = NULL;
return Status;
}
//
// go down directories one node at a time.
//
while (!IsDevicePathEnd (*FilePath)) {
//
// For file system access each node should be a file path component
//
if (DevicePathType (*FilePath) != MEDIA_DEVICE_PATH ||
DevicePathSubType (*FilePath) != MEDIA_FILEPATH_DP
) {
FileHandle = NULL;
return (EFI_INVALID_PARAMETER);
}
//
// Open this file path node
//
Handle2 = Handle1;
Handle1 = NULL;
//
// Try to test opening an existing file
//
Status = Handle2->Open (
Handle2,
&Handle1,
((FILEPATH_DEVICE_PATH*)*FilePath)->PathName,
OpenMode &~EFI_FILE_MODE_CREATE,
0
);
//
// see if the error was that it needs to be created
//
if ((EFI_ERROR (Status)) && (OpenMode != (OpenMode &~EFI_FILE_MODE_CREATE))) {
Status = Handle2->Open (
Handle2,
&Handle1,
((FILEPATH_DEVICE_PATH*)*FilePath)->PathName,
OpenMode,
Attributes
);
}
//
// Close the last node
//
Handle2->Close (Handle2);
if (EFI_ERROR(Status)) {
return (Status);
}
//
// Get the next node
//
*FilePath = NextDevicePathNode (*FilePath);
}
//
// This is a weak spot since if the undefined SHELL_FILE_HANDLE format changes this must change also!
//
*FileHandle = (VOID*)Handle1;
return (EFI_SUCCESS);
}
/**
This function will open a file or directory referenced by filename.
If return is EFI_SUCCESS, the Filehandle is the opened file's handle;
otherwise, the Filehandle is NULL. The Attributes is valid only for
EFI_FILE_MODE_CREATE.
if FileName is NULL then ASSERT()
@param FileName pointer to file name
@param FileHandle pointer to the file handle.
@param OpenMode the mode to open the file with.
@param Attributes the file's file attributes.
@retval EFI_SUCCESS The information was set.
@retval EFI_INVALID_PARAMETER One of the parameters has an invalid value.
@retval EFI_UNSUPPORTED Could not open the file path.
@retval EFI_NOT_FOUND The specified file could not be found on the
device or the file system could not be found
on the device.
@retval EFI_NO_MEDIA The device has no medium.
@retval EFI_MEDIA_CHANGED The device has a different medium in it or the
medium is no longer supported.
@retval EFI_DEVICE_ERROR The device reported an error.
@retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.
@retval EFI_WRITE_PROTECTED The file or medium is write protected.
@retval EFI_ACCESS_DENIED The file was opened read only.
@retval EFI_OUT_OF_RESOURCES Not enough resources were available to open the
file.
@retval EFI_VOLUME_FULL The volume is full.
**/
EFI_STATUS
EFIAPI
ShellOpenFileByName(
IN CONST CHAR16 *FileName,
OUT SHELL_FILE_HANDLE *FileHandle,
IN UINT64 OpenMode,
IN UINT64 Attributes
)
{
EFI_HANDLE DeviceHandle;
EFI_DEVICE_PATH_PROTOCOL *FilePath;
EFI_STATUS Status;
EFI_FILE_INFO *FileInfo;
//
// ASSERT if FileName is NULL
//
ASSERT(FileName != NULL);
if (FileName == NULL) {
return (EFI_INVALID_PARAMETER);
}
if (gEfiShellProtocol != NULL) {
if ((OpenMode & EFI_FILE_MODE_CREATE) == EFI_FILE_MODE_CREATE && (Attributes & EFI_FILE_DIRECTORY) == EFI_FILE_DIRECTORY) {
return ShellCreateDirectory(FileName, FileHandle);
}
//
// Use UEFI Shell 2.0 method
//
Status = gEfiShellProtocol->OpenFileByName(FileName,
FileHandle,
OpenMode);
if (StrCmp(FileName, L"NUL") != 0 && !EFI_ERROR(Status) && ((OpenMode & EFI_FILE_MODE_CREATE) != 0)){
FileInfo = FileFunctionMap.GetFileInfo(*FileHandle);
ASSERT(FileInfo != NULL);
FileInfo->Attribute = Attributes;
Status = FileFunctionMap.SetFileInfo(*FileHandle, FileInfo);
FreePool(FileInfo);
}
return (Status);
}
//
// Using EFI Shell version
// this means convert name to path and call that function
// since this will use EFI method again that will open it.
//
ASSERT(mEfiShellEnvironment2 != NULL);
FilePath = mEfiShellEnvironment2->NameToPath ((CHAR16*)FileName);
if (FilePath != NULL) {
return (ShellOpenFileByDevicePath(&FilePath,
&DeviceHandle,
FileHandle,
OpenMode,
Attributes));
}
return (EFI_DEVICE_ERROR);
}
/**
This function create a directory
If return is EFI_SUCCESS, the Filehandle is the opened directory's handle;
otherwise, the Filehandle is NULL. If the directory already existed, this
function opens the existing directory.
@param DirectoryName pointer to directory name
@param FileHandle pointer to the file handle.
@retval EFI_SUCCESS The information was set.
@retval EFI_INVALID_PARAMETER One of the parameters has an invalid value.
@retval EFI_UNSUPPORTED Could not open the file path.
@retval EFI_NOT_FOUND The specified file could not be found on the
device or the file system could not be found
on the device.
@retval EFI_NO_MEDIA The device has no medium.
@retval EFI_MEDIA_CHANGED The device has a different medium in it or the
medium is no longer supported.
@retval EFI_DEVICE_ERROR The device reported an error.
@retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.
@retval EFI_WRITE_PROTECTED The file or medium is write protected.
@retval EFI_ACCESS_DENIED The file was opened read only.
@retval EFI_OUT_OF_RESOURCES Not enough resources were available to open the
file.
@retval EFI_VOLUME_FULL The volume is full.
@sa ShellOpenFileByName
**/
EFI_STATUS
EFIAPI
ShellCreateDirectory(
IN CONST CHAR16 *DirectoryName,
OUT SHELL_FILE_HANDLE *FileHandle
)
{
if (gEfiShellProtocol != NULL) {
//
// Use UEFI Shell 2.0 method
//
return (gEfiShellProtocol->CreateFile(DirectoryName,
EFI_FILE_DIRECTORY,
FileHandle
));
} else {
return (ShellOpenFileByName(DirectoryName,
FileHandle,
EFI_FILE_MODE_READ | EFI_FILE_MODE_WRITE | EFI_FILE_MODE_CREATE,
EFI_FILE_DIRECTORY
));
}
}
/**
This function reads information from an opened file.
If FileHandle is not a directory, the function reads the requested number of
bytes from the file at the file's current position and returns them in Buffer.
If the read goes beyond the end of the file, the read length is truncated to the
end of the file. The file's current position is increased by the number of bytes
returned. If FileHandle is a directory, the function reads the directory entry
at the file's current position and returns the entry in Buffer. If the Buffer
is not large enough to hold the current directory entry, then
EFI_BUFFER_TOO_SMALL is returned and the current file position is not updated.
BufferSize is set to be the size of the buffer needed to read the entry. On
success, the current position is updated to the next directory entry. If there
are no more directory entries, the read returns a zero-length buffer.
EFI_FILE_INFO is the structure returned as the directory entry.
@param FileHandle the opened file handle
@param BufferSize on input the size of buffer in bytes. on return
the number of bytes written.
@param Buffer the buffer to put read data into.
@retval EFI_SUCCESS Data was read.
@retval EFI_NO_MEDIA The device has no media.
@retval EFI_DEVICE_ERROR The device reported an error.
@retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.
@retval EFI_BUFFER_TO_SMALL Buffer is too small. ReadSize contains required
size.
**/
EFI_STATUS
EFIAPI
ShellReadFile(
IN SHELL_FILE_HANDLE FileHandle,
IN OUT UINTN *BufferSize,
OUT VOID *Buffer
)
{
return (FileFunctionMap.ReadFile(FileHandle, BufferSize, Buffer));
}
/**
Write data to a file.
This function writes the specified number of bytes to the file at the current
file position. The current file position is advanced the actual number of bytes
written, which is returned in BufferSize. Partial writes only occur when there
has been a data error during the write attempt (such as "volume space full").
The file is automatically grown to hold the data if required. Direct writes to
opened directories are not supported.
@param FileHandle The opened file for writing
@param BufferSize on input the number of bytes in Buffer. On output
the number of bytes written.
@param Buffer the buffer containing data to write is stored.
@retval EFI_SUCCESS Data was written.
@retval EFI_UNSUPPORTED Writes to an open directory are not supported.
@retval EFI_NO_MEDIA The device has no media.
@retval EFI_DEVICE_ERROR The device reported an error.
@retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.
@retval EFI_WRITE_PROTECTED The device is write-protected.
@retval EFI_ACCESS_DENIED The file was open for read only.
@retval EFI_VOLUME_FULL The volume is full.
**/
EFI_STATUS
EFIAPI
ShellWriteFile(
IN SHELL_FILE_HANDLE FileHandle,
IN OUT UINTN *BufferSize,
IN VOID *Buffer
)
{
return (FileFunctionMap.WriteFile(FileHandle, BufferSize, Buffer));
}
/**
Close an open file handle.
This function closes a specified file handle. All "dirty" cached file data is
flushed to the device, and the file is closed. In all cases the handle is
closed.
@param FileHandle the file handle to close.
@retval EFI_SUCCESS the file handle was closed sucessfully.
**/
EFI_STATUS
EFIAPI
ShellCloseFile (
IN SHELL_FILE_HANDLE *FileHandle
)
{
return (FileFunctionMap.CloseFile(*FileHandle));
}
/**
Delete a file and close the handle
This function closes and deletes a file. In all cases the file handle is closed.
If the file cannot be deleted, the warning code EFI_WARN_DELETE_FAILURE is
returned, but the handle is still closed.
@param FileHandle the file handle to delete
@retval EFI_SUCCESS the file was closed sucessfully
@retval EFI_WARN_DELETE_FAILURE the handle was closed, but the file was not
deleted
@retval INVALID_PARAMETER One of the parameters has an invalid value.
**/
EFI_STATUS
EFIAPI
ShellDeleteFile (
IN SHELL_FILE_HANDLE *FileHandle
)
{
return (FileFunctionMap.DeleteFile(*FileHandle));
}
/**
Set the current position in a file.
This function sets the current file position for the handle to the position
supplied. With the exception of seeking to position 0xFFFFFFFFFFFFFFFF, only
absolute positioning is supported, and seeking past the end of the file is
allowed (a subsequent write would grow the file). Seeking to position
0xFFFFFFFFFFFFFFFF causes the current position to be set to the end of the file.
If FileHandle is a directory, the only position that may be set is zero. This
has the effect of starting the read process of the directory entries over.
@param FileHandle The file handle on which the position is being set
@param Position Byte position from begining of file
@retval EFI_SUCCESS Operation completed sucessfully.
@retval EFI_UNSUPPORTED the seek request for non-zero is not valid on
directories.
@retval INVALID_PARAMETER One of the parameters has an invalid value.
**/
EFI_STATUS
EFIAPI
ShellSetFilePosition (
IN SHELL_FILE_HANDLE FileHandle,
IN UINT64 Position
)
{
return (FileFunctionMap.SetFilePosition(FileHandle, Position));
}
/**
Gets a file's current position
This function retrieves the current file position for the file handle. For
directories, the current file position has no meaning outside of the file
system driver and as such the operation is not supported. An error is returned
if FileHandle is a directory.
@param FileHandle The open file handle on which to get the position.
@param Position Byte position from begining of file.
@retval EFI_SUCCESS the operation completed sucessfully.
@retval INVALID_PARAMETER One of the parameters has an invalid value.
@retval EFI_UNSUPPORTED the request is not valid on directories.
**/
EFI_STATUS
EFIAPI
ShellGetFilePosition (
IN SHELL_FILE_HANDLE FileHandle,
OUT UINT64 *Position
)
{
return (FileFunctionMap.GetFilePosition(FileHandle, Position));
}
/**
Flushes data on a file
This function flushes all modified data associated with a file to a device.
@param FileHandle The file handle on which to flush data
@retval EFI_SUCCESS The data was flushed.
@retval EFI_NO_MEDIA The device has no media.
@retval EFI_DEVICE_ERROR The device reported an error.
@retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.
@retval EFI_WRITE_PROTECTED The file or medium is write protected.
@retval EFI_ACCESS_DENIED The file was opened for read only.
**/
EFI_STATUS
EFIAPI
ShellFlushFile (
IN SHELL_FILE_HANDLE FileHandle
)
{
return (FileFunctionMap.FlushFile(FileHandle));
}
/** Retrieve first entry from a directory.
This function takes an open directory handle and gets information from the
first entry in the directory. A buffer is allocated to contain
the information and a pointer to the buffer is returned in *Buffer. The
caller can use ShellFindNextFile() to get subsequent directory entries.
The buffer will be freed by ShellFindNextFile() when the last directory
entry is read. Otherwise, the caller must free the buffer, using FreePool,
when finished with it.
@param[in] DirHandle The file handle of the directory to search.
@param[out] Buffer The pointer to the buffer for the file's information.
@retval EFI_SUCCESS Found the first file.
@retval EFI_NOT_FOUND Cannot find the directory.
@retval EFI_NO_MEDIA The device has no media.
@retval EFI_DEVICE_ERROR The device reported an error.
@retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.
@return Others status of ShellGetFileInfo, ShellSetFilePosition,
or ShellReadFile
**/
EFI_STATUS
EFIAPI
ShellFindFirstFile (
IN SHELL_FILE_HANDLE DirHandle,
OUT EFI_FILE_INFO **Buffer
)
{
//
// pass to file handle lib
//
return (FileHandleFindFirstFile(DirHandle, Buffer));
}
/** Retrieve next entries from a directory.
To use this function, the caller must first call the ShellFindFirstFile()
function to get the first directory entry. Subsequent directory entries are
retrieved by using the ShellFindNextFile() function. This function can
be called several times to get each entry from the directory. If the call of
ShellFindNextFile() retrieved the last directory entry, the next call of
this function will set *NoFile to TRUE and free the buffer.
@param[in] DirHandle The file handle of the directory.
@param[out] Buffer The pointer to buffer for file's information.
@param[out] NoFile The pointer to boolean when last file is found.
@retval EFI_SUCCESS Found the next file, or reached last file
@retval EFI_NO_MEDIA The device has no media.
@retval EFI_DEVICE_ERROR The device reported an error.
@retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.
**/
EFI_STATUS
EFIAPI
ShellFindNextFile(
IN SHELL_FILE_HANDLE DirHandle,
OUT EFI_FILE_INFO *Buffer,
OUT BOOLEAN *NoFile
)
{
//
// pass to file handle lib
//
return (FileHandleFindNextFile(DirHandle, Buffer, NoFile));
}
/**
Retrieve the size of a file.
if FileHandle is NULL then ASSERT()
if Size is NULL then ASSERT()
This function extracts the file size info from the FileHandle's EFI_FILE_INFO
data.
@param FileHandle file handle from which size is retrieved
@param Size pointer to size
@retval EFI_SUCCESS operation was completed sucessfully
@retval EFI_DEVICE_ERROR cannot access the file
**/
EFI_STATUS
EFIAPI
ShellGetFileSize (
IN SHELL_FILE_HANDLE FileHandle,
OUT UINT64 *Size
)
{
return (FileFunctionMap.GetFileSize(FileHandle, Size));
}
/**
Retrieves the status of the break execution flag
this function is useful to check whether the application is being asked to halt by the shell.
@retval TRUE the execution break is enabled
@retval FALSE the execution break is not enabled
**/
BOOLEAN
EFIAPI
ShellGetExecutionBreakFlag(
VOID
)
{
//
// Check for UEFI Shell 2.0 protocols
//
if (gEfiShellProtocol != NULL) {
//
// We are using UEFI Shell 2.0; see if the event has been triggered
//
if (gBS->CheckEvent(gEfiShellProtocol->ExecutionBreak) != EFI_SUCCESS) {
return (FALSE);
}
return (TRUE);
}
//
// using EFI Shell; call the function to check
//
if (mEfiShellEnvironment2 != NULL) {
return (mEfiShellEnvironment2->GetExecutionBreak());
}
return (FALSE);
}
/**
return the value of an environment variable
this function gets the value of the environment variable set by the
ShellSetEnvironmentVariable function
@param EnvKey The key name of the environment variable.
@retval NULL the named environment variable does not exist.
@return != NULL pointer to the value of the environment variable
**/
CONST CHAR16*
EFIAPI
ShellGetEnvironmentVariable (
IN CONST CHAR16 *EnvKey
)
{
//
// Check for UEFI Shell 2.0 protocols
//
if (gEfiShellProtocol != NULL) {
return (gEfiShellProtocol->GetEnv(EnvKey));
}
//
// Check for EFI shell
//
if (mEfiShellEnvironment2 != NULL) {
return (mEfiShellEnvironment2->GetEnv((CHAR16*)EnvKey));
}
return NULL;
}
/**
set the value of an environment variable
This function changes the current value of the specified environment variable. If the
environment variable exists and the Value is an empty string, then the environment
variable is deleted. If the environment variable exists and the Value is not an empty
string, then the value of the environment variable is changed. If the environment
variable does not exist and the Value is an empty string, there is no action. If the
environment variable does not exist and the Value is a non-empty string, then the
environment variable is created and assigned the specified value.
This is not supported pre-UEFI Shell 2.0.
@param EnvKey The key name of the environment variable.
@param EnvVal The Value of the environment variable
@param Volatile Indicates whether the variable is non-volatile (FALSE) or volatile (TRUE).
@retval EFI_SUCCESS the operation was completed sucessfully
@retval EFI_UNSUPPORTED This operation is not allowed in pre UEFI 2.0 Shell environments
**/
EFI_STATUS
EFIAPI
ShellSetEnvironmentVariable (
IN CONST CHAR16 *EnvKey,
IN CONST CHAR16 *EnvVal,
IN BOOLEAN Volatile
)
{
//
// Check for UEFI Shell 2.0 protocols
//
if (gEfiShellProtocol != NULL) {
return (gEfiShellProtocol->SetEnv(EnvKey, EnvVal, Volatile));
}
//
// This feature does not exist under EFI shell
//
return (EFI_UNSUPPORTED);
}
/**
Cause the shell to parse and execute a command line.
This function creates a nested instance of the shell and executes the specified
command (CommandLine) with the specified environment (Environment). Upon return,
the status code returned by the specified command is placed in StatusCode.
If Environment is NULL, then the current environment is used and all changes made
by the commands executed will be reflected in the current environment. If the
Environment is non-NULL, then the changes made will be discarded.
The CommandLine is executed from the current working directory on the current
device.
The EnvironmentVariables and Status parameters are ignored in a pre-UEFI Shell 2.0
environment. The values pointed to by the parameters will be unchanged by the
ShellExecute() function. The Output parameter has no effect in a
UEFI Shell 2.0 environment.
@param[in] ParentHandle The parent image starting the operation.
@param[in] CommandLine The pointer to a NULL terminated command line.
@param[in] Output True to display debug output. False to hide it.
@param[in] EnvironmentVariables Optional pointer to array of environment variables
in the form "x=y". If NULL, the current set is used.
@param[out] Status The status of the run command line.
@retval EFI_SUCCESS The operation completed sucessfully. Status
contains the status code returned.
@retval EFI_INVALID_PARAMETER A parameter contains an invalid value.
@retval EFI_OUT_OF_RESOURCES Out of resources.
@retval EFI_UNSUPPORTED The operation is not allowed.
**/
EFI_STATUS
EFIAPI
ShellExecute (
IN EFI_HANDLE *ParentHandle,
IN CHAR16 *CommandLine OPTIONAL,
IN BOOLEAN Output OPTIONAL,
IN CHAR16 **EnvironmentVariables OPTIONAL,
OUT EFI_STATUS *Status OPTIONAL
)
{
//
// Check for UEFI Shell 2.0 protocols
//
if (gEfiShellProtocol != NULL) {
//
// Call UEFI Shell 2.0 version (not using Output parameter)
//
return (gEfiShellProtocol->Execute(ParentHandle,
CommandLine,
EnvironmentVariables,
Status));
}
//
// Check for EFI shell
//
if (mEfiShellEnvironment2 != NULL) {
//
// Call EFI Shell version (not using EnvironmentVariables or Status parameters)
// Due to oddity in the EFI shell we want to dereference the ParentHandle here
//
return (mEfiShellEnvironment2->Execute(*ParentHandle,
CommandLine,
Output));
}
return (EFI_UNSUPPORTED);
}
/**
Retreives the current directory path
If the DeviceName is NULL, it returns the current device's current directory
name. If the DeviceName is not NULL, it returns the current directory name
on specified drive.
@param DeviceName the name of the drive to get directory on
@retval NULL the directory does not exist
@return != NULL the directory
**/
CONST CHAR16*
EFIAPI
ShellGetCurrentDir (
IN CHAR16 * CONST DeviceName OPTIONAL
)
{
//
// Check for UEFI Shell 2.0 protocols
//
if (gEfiShellProtocol != NULL) {
return (gEfiShellProtocol->GetCurDir(DeviceName));
}
//
// Check for EFI shell
//
if (mEfiShellEnvironment2 != NULL) {
return (mEfiShellEnvironment2->CurDir(DeviceName));
}
return (NULL);
}
/**
sets (enabled or disabled) the page break mode
when page break mode is enabled the screen will stop scrolling
and wait for operator input before scrolling a subsequent screen.
@param CurrentState TRUE to enable and FALSE to disable
**/
VOID
EFIAPI
ShellSetPageBreakMode (
IN BOOLEAN CurrentState
)
{
//
// check for enabling
//
if (CurrentState != 0x00) {
//
// check for UEFI Shell 2.0
//
if (gEfiShellProtocol != NULL) {
//
// Enable with UEFI 2.0 Shell
//
gEfiShellProtocol->EnablePageBreak();
return;
} else {
//
// Check for EFI shell
//
if (mEfiShellEnvironment2 != NULL) {
//
// Enable with EFI Shell
//
mEfiShellEnvironment2->EnablePageBreak (DEFAULT_INIT_ROW, DEFAULT_AUTO_LF);
return;
}
}
} else {
//
// check for UEFI Shell 2.0
//
if (gEfiShellProtocol != NULL) {
//
// Disable with UEFI 2.0 Shell
//
gEfiShellProtocol->DisablePageBreak();
return;
} else {
//
// Check for EFI shell
//
if (mEfiShellEnvironment2 != NULL) {
//
// Disable with EFI Shell
//
mEfiShellEnvironment2->DisablePageBreak ();
return;
}
}
}
}
///
/// version of EFI_SHELL_FILE_INFO struct, except has no CONST pointers.
/// This allows for the struct to be populated.
///
typedef struct {
LIST_ENTRY Link;
EFI_STATUS Status;
CHAR16 *FullName;
CHAR16 *FileName;
SHELL_FILE_HANDLE Handle;
EFI_FILE_INFO *Info;
} EFI_SHELL_FILE_INFO_NO_CONST;
/**
Converts a EFI shell list of structures to the coresponding UEFI Shell 2.0 type of list.
if OldStyleFileList is NULL then ASSERT()
this function will convert a SHELL_FILE_ARG based list into a callee allocated
EFI_SHELL_FILE_INFO based list. it is up to the caller to free the memory via
the ShellCloseFileMetaArg function.
@param[in] FileList the EFI shell list type
@param[in, out] ListHead the list to add to
@retval the resultant head of the double linked new format list;
**/
LIST_ENTRY*
EFIAPI
InternalShellConvertFileListType (
IN LIST_ENTRY *FileList,
IN OUT LIST_ENTRY *ListHead
)
{
SHELL_FILE_ARG *OldInfo;
LIST_ENTRY *Link;
EFI_SHELL_FILE_INFO_NO_CONST *NewInfo;
//
// ASSERTs
//
ASSERT(FileList != NULL);
ASSERT(ListHead != NULL);
//
// enumerate through each member of the old list and copy
//
for (Link = FileList->ForwardLink; Link != FileList; Link = Link->ForwardLink) {
OldInfo = CR (Link, SHELL_FILE_ARG, Link, SHELL_FILE_ARG_SIGNATURE);
ASSERT(OldInfo != NULL);
//
// Skip ones that failed to open...
//
if (OldInfo->Status != EFI_SUCCESS) {
continue;
}
//
// make sure the old list was valid
//
ASSERT(OldInfo->Info != NULL);
ASSERT(OldInfo->FullName != NULL);
ASSERT(OldInfo->FileName != NULL);
//
// allocate a new EFI_SHELL_FILE_INFO object
//
NewInfo = AllocateZeroPool(sizeof(EFI_SHELL_FILE_INFO));
if (NewInfo == NULL) {
ShellCloseFileMetaArg((EFI_SHELL_FILE_INFO**)(&ListHead));
ListHead = NULL;
break;
}
//
// copy the simple items
//
NewInfo->Handle = OldInfo->Handle;
NewInfo->Status = OldInfo->Status;
// old shell checks for 0 not NULL
OldInfo->Handle = 0;
//
// allocate new space to copy strings and structure
//
NewInfo->FullName = AllocateZeroPool(StrSize(OldInfo->FullName));
NewInfo->FileName = AllocateZeroPool(StrSize(OldInfo->FileName));
NewInfo->Info = AllocateZeroPool((UINTN)OldInfo->Info->Size);
//
// make sure all the memory allocations were sucessful
//
if (NULL == NewInfo->FullName || NewInfo->FileName == NULL || NewInfo->Info == NULL) {
ShellCloseFileMetaArg((EFI_SHELL_FILE_INFO**)(&ListHead));
ListHead = NULL;
break;
}
//
// Copt the strings and structure
//
StrCpy(NewInfo->FullName, OldInfo->FullName);
StrCpy(NewInfo->FileName, OldInfo->FileName);
gBS->CopyMem (NewInfo->Info, OldInfo->Info, (UINTN)OldInfo->Info->Size);
//
// add that to the list
//
InsertTailList(ListHead, &NewInfo->Link);
}
return (ListHead);
}
/**
Opens a group of files based on a path.
This function uses the Arg to open all the matching files. Each matched
file has a SHELL_FILE_ARG structure to record the file information. These
structures are placed on the list ListHead. Users can get the SHELL_FILE_ARG
structures from ListHead to access each file. This function supports wildcards
and will process '?' and '*' as such. the list must be freed with a call to
ShellCloseFileMetaArg().
If you are NOT appending to an existing list *ListHead must be NULL. If
*ListHead is NULL then it must be callee freed.
@param Arg pointer to path string
@param OpenMode mode to open files with
@param ListHead head of linked list of results
@retval EFI_SUCCESS the operation was sucessful and the list head
contains the list of opened files
@return != EFI_SUCCESS the operation failed
@sa InternalShellConvertFileListType
**/
EFI_STATUS
EFIAPI
ShellOpenFileMetaArg (
IN CHAR16 *Arg,
IN UINT64 OpenMode,
IN OUT EFI_SHELL_FILE_INFO **ListHead
)
{
EFI_STATUS Status;
LIST_ENTRY mOldStyleFileList;
//
// ASSERT that Arg and ListHead are not NULL
//
ASSERT(Arg != NULL);
ASSERT(ListHead != NULL);
//
// Check for UEFI Shell 2.0 protocols
//
if (gEfiShellProtocol != NULL) {
if (*ListHead == NULL) {
*ListHead = (EFI_SHELL_FILE_INFO*)AllocateZeroPool(sizeof(EFI_SHELL_FILE_INFO));
if (*ListHead == NULL) {
return (EFI_OUT_OF_RESOURCES);
}
InitializeListHead(&((*ListHead)->Link));
}
Status = gEfiShellProtocol->OpenFileList(Arg,
OpenMode,
ListHead);
if (EFI_ERROR(Status)) {
gEfiShellProtocol->RemoveDupInFileList(ListHead);
} else {
Status = gEfiShellProtocol->RemoveDupInFileList(ListHead);
}
if (*ListHead != NULL && IsListEmpty(&(*ListHead)->Link)) {
FreePool(*ListHead);
*ListHead = NULL;
return (EFI_NOT_FOUND);
}
return (Status);
}
//
// Check for EFI shell
//
if (mEfiShellEnvironment2 != NULL) {
//
// make sure the list head is initialized
//
InitializeListHead(&mOldStyleFileList);
//
// Get the EFI Shell list of files
//
Status = mEfiShellEnvironment2->FileMetaArg(Arg, &mOldStyleFileList);
if (EFI_ERROR(Status)) {
*ListHead = NULL;
return (Status);
}
if (*ListHead == NULL) {
*ListHead = (EFI_SHELL_FILE_INFO *)AllocateZeroPool(sizeof(EFI_SHELL_FILE_INFO));
if (*ListHead == NULL) {
return (EFI_OUT_OF_RESOURCES);
}
InitializeListHead(&((*ListHead)->Link));
}
//
// Convert that to equivalent of UEFI Shell 2.0 structure
//
InternalShellConvertFileListType(&mOldStyleFileList, &(*ListHead)->Link);
//
// Free the EFI Shell version that was converted.
//
mEfiShellEnvironment2->FreeFileList(&mOldStyleFileList);
if ((*ListHead)->Link.ForwardLink == (*ListHead)->Link.BackLink && (*ListHead)->Link.BackLink == &((*ListHead)->Link)) {
FreePool(*ListHead);
*ListHead = NULL;
Status = EFI_NOT_FOUND;
}
return (Status);
}
return (EFI_UNSUPPORTED);
}
/**
Free the linked list returned from ShellOpenFileMetaArg.
if ListHead is NULL then ASSERT().
@param ListHead the pointer to free.
@retval EFI_SUCCESS the operation was sucessful.
**/
EFI_STATUS
EFIAPI
ShellCloseFileMetaArg (
IN OUT EFI_SHELL_FILE_INFO **ListHead
)
{
LIST_ENTRY *Node;
//
// ASSERT that ListHead is not NULL
//
ASSERT(ListHead != NULL);
//
// Check for UEFI Shell 2.0 protocols
//
if (gEfiShellProtocol != NULL) {
return (gEfiShellProtocol->FreeFileList(ListHead));
} else if (mEfiShellEnvironment2 != NULL) {
//
// Since this is EFI Shell version we need to free our internally made copy
// of the list
//
for ( Node = GetFirstNode(&(*ListHead)->Link)
; *ListHead != NULL && !IsListEmpty(&(*ListHead)->Link)
; Node = GetFirstNode(&(*ListHead)->Link)) {
RemoveEntryList(Node);
((EFI_FILE_PROTOCOL*)((EFI_SHELL_FILE_INFO_NO_CONST*)Node)->Handle)->Close(((EFI_SHELL_FILE_INFO_NO_CONST*)Node)->Handle);
FreePool(((EFI_SHELL_FILE_INFO_NO_CONST*)Node)->FullName);
FreePool(((EFI_SHELL_FILE_INFO_NO_CONST*)Node)->FileName);
FreePool(((EFI_SHELL_FILE_INFO_NO_CONST*)Node)->Info);
FreePool((EFI_SHELL_FILE_INFO_NO_CONST*)Node);
}
return EFI_SUCCESS;
}
return (EFI_UNSUPPORTED);
}
/**
Find a file by searching the CWD and then the path.
If FileName is NULL then ASSERT.
If the return value is not NULL then the memory must be caller freed.
@param FileName Filename string.
@retval NULL the file was not found
@return !NULL the full path to the file.
**/
CHAR16 *
EFIAPI
ShellFindFilePath (
IN CONST CHAR16 *FileName
)
{
CONST CHAR16 *Path;
SHELL_FILE_HANDLE Handle;
EFI_STATUS Status;
CHAR16 *RetVal;
CHAR16 *TestPath;
CONST CHAR16 *Walker;
UINTN Size;
CHAR16 *TempChar;
RetVal = NULL;
//
// First make sure its not an absolute path.
//
Status = ShellOpenFileByName(FileName, &Handle, EFI_FILE_MODE_READ, 0);
if (!EFI_ERROR(Status)){
if (FileHandleIsDirectory(Handle) != EFI_SUCCESS) {
ASSERT(RetVal == NULL);
RetVal = StrnCatGrow(&RetVal, NULL, FileName, 0);
ShellCloseFile(&Handle);
return (RetVal);
} else {
ShellCloseFile(&Handle);
}
}
Path = ShellGetEnvironmentVariable(L"cwd");
if (Path != NULL) {
Size = StrSize(Path);
Size += StrSize(FileName);
TestPath = AllocateZeroPool(Size);
if (TestPath == NULL) {
return (NULL);
}
StrCpy(TestPath, Path);
StrCat(TestPath, FileName);
Status = ShellOpenFileByName(TestPath, &Handle, EFI_FILE_MODE_READ, 0);
if (!EFI_ERROR(Status)){
if (FileHandleIsDirectory(Handle) != EFI_SUCCESS) {
ASSERT(RetVal == NULL);
RetVal = StrnCatGrow(&RetVal, NULL, TestPath, 0);
ShellCloseFile(&Handle);
FreePool(TestPath);
return (RetVal);
} else {
ShellCloseFile(&Handle);
}
}
FreePool(TestPath);
}
Path = ShellGetEnvironmentVariable(L"path");
if (Path != NULL) {
Size = StrSize(Path)+sizeof(CHAR16);
Size += StrSize(FileName);
TestPath = AllocateZeroPool(Size);
if (TestPath == NULL) {
return (NULL);
}
Walker = (CHAR16*)Path;
do {
CopyMem(TestPath, Walker, StrSize(Walker));
if (TestPath != NULL) {
TempChar = StrStr(TestPath, L";");
if (TempChar != NULL) {
*TempChar = CHAR_NULL;
}
if (TestPath[StrLen(TestPath)-1] != L'\\') {
StrCat(TestPath, L"\\");
}
if (FileName[0] == L'\\') {
FileName++;
}
StrCat(TestPath, FileName);
if (StrStr(Walker, L";") != NULL) {
Walker = StrStr(Walker, L";") + 1;
} else {
Walker = NULL;
}
Status = ShellOpenFileByName(TestPath, &Handle, EFI_FILE_MODE_READ, 0);
if (!EFI_ERROR(Status)){
if (FileHandleIsDirectory(Handle) != EFI_SUCCESS) {
ASSERT(RetVal == NULL);
RetVal = StrnCatGrow(&RetVal, NULL, TestPath, 0);
ShellCloseFile(&Handle);
break;
} else {
ShellCloseFile(&Handle);
}
}
}
} while (Walker != NULL && Walker[0] != CHAR_NULL);
FreePool(TestPath);
}
return (RetVal);
}
/**
Find a file by searching the CWD and then the path with a variable set of file
extensions. If the file is not found it will append each extension in the list
in the order provided and return the first one that is successful.
If FileName is NULL, then ASSERT.
If FileExtension is NULL, then behavior is identical to ShellFindFilePath.
If the return value is not NULL then the memory must be caller freed.
@param[in] FileName Filename string.
@param[in] FileExtension Semi-colon delimeted list of possible extensions.
@retval NULL The file was not found.
@retval !NULL The path to the file.
**/
CHAR16 *
EFIAPI
ShellFindFilePathEx (
IN CONST CHAR16 *FileName,
IN CONST CHAR16 *FileExtension
)
{
CHAR16 *TestPath;
CHAR16 *RetVal;
CONST CHAR16 *ExtensionWalker;
UINTN Size;
CHAR16 *TempChar;
CHAR16 *TempChar2;
ASSERT(FileName != NULL);
if (FileExtension == NULL) {
return (ShellFindFilePath(FileName));
}
RetVal = ShellFindFilePath(FileName);
if (RetVal != NULL) {
return (RetVal);
}
Size = StrSize(FileName);
Size += StrSize(FileExtension);
TestPath = AllocateZeroPool(Size);
if (TestPath == NULL) {
return (NULL);
}
for (ExtensionWalker = FileExtension, TempChar2 = (CHAR16*)FileExtension; TempChar2 != NULL ; ExtensionWalker = TempChar2 + 1){
StrCpy(TestPath, FileName);
if (ExtensionWalker != NULL) {
StrCat(TestPath, ExtensionWalker);
}
TempChar = StrStr(TestPath, L";");
if (TempChar != NULL) {
*TempChar = CHAR_NULL;
}
RetVal = ShellFindFilePath(TestPath);
if (RetVal != NULL) {
break;
}
ASSERT(ExtensionWalker != NULL);
TempChar2 = StrStr(ExtensionWalker, L";");
}
FreePool(TestPath);
return (RetVal);
}
typedef struct {
LIST_ENTRY Link;
CHAR16 *Name;
SHELL_PARAM_TYPE Type;
CHAR16 *Value;
UINTN OriginalPosition;
} SHELL_PARAM_PACKAGE;
/**
Checks the list of valid arguments and returns TRUE if the item was found. If the
return value is TRUE then the type parameter is set also.
if CheckList is NULL then ASSERT();
if Name is NULL then ASSERT();
if Type is NULL then ASSERT();
@param Name pointer to Name of parameter found
@param CheckList List to check against
@param Type pointer to type of parameter if it was found
@retval TRUE the Parameter was found. Type is valid.
@retval FALSE the Parameter was not found. Type is not valid.
**/
BOOLEAN
EFIAPI
InternalIsOnCheckList (
IN CONST CHAR16 *Name,
IN CONST SHELL_PARAM_ITEM *CheckList,
OUT SHELL_PARAM_TYPE *Type
)
{
SHELL_PARAM_ITEM *TempListItem;
CHAR16 *TempString;
//
// ASSERT that all 3 pointer parameters aren't NULL
//
ASSERT(CheckList != NULL);
ASSERT(Type != NULL);
ASSERT(Name != NULL);
//
// question mark and page break mode are always supported
//
if ((StrCmp(Name, L"-?") == 0) ||
(StrCmp(Name, L"-b") == 0)
) {
*Type = TypeFlag;
return (TRUE);
}
//
// Enumerate through the list
//
for (TempListItem = (SHELL_PARAM_ITEM*)CheckList ; TempListItem->Name != NULL ; TempListItem++) {
//
// If the Type is TypeStart only check the first characters of the passed in param
// If it matches set the type and return TRUE
//
if (TempListItem->Type == TypeStart) {
if (StrnCmp(Name, TempListItem->Name, StrLen(TempListItem->Name)) == 0) {
*Type = TempListItem->Type;
return (TRUE);
}
TempString = NULL;
TempString = StrnCatGrow(&TempString, NULL, Name, StrLen(TempListItem->Name));
if (TempString != NULL) {
if (StringNoCaseCompare(&TempString, &TempListItem->Name) == 0) {
*Type = TempListItem->Type;
FreePool(TempString);
return (TRUE);
}
FreePool(TempString);
}
} else if (StringNoCaseCompare(&Name, &TempListItem->Name) == 0) {
*Type = TempListItem->Type;
return (TRUE);
}
}
return (FALSE);
}
/**
Checks the string for indicators of "flag" status. this is a leading '/', '-', or '+'
@param[in] Name pointer to Name of parameter found
@param[in] AlwaysAllowNumbers TRUE to allow numbers, FALSE to not.
@retval TRUE the Parameter is a flag.
@retval FALSE the Parameter not a flag.
**/
BOOLEAN
EFIAPI
InternalIsFlag (
IN CONST CHAR16 *Name,
IN BOOLEAN AlwaysAllowNumbers
)
{
//
// ASSERT that Name isn't NULL
//
ASSERT(Name != NULL);
//
// If we accept numbers then dont return TRUE. (they will be values)
//
if (((Name[0] == L'-' || Name[0] == L'+') && ShellIsHexaDecimalDigitCharacter(Name[1])) && AlwaysAllowNumbers) {
return (FALSE);
}
//
// If the Name has a /, +, or - as the first character return TRUE
//
if ((Name[0] == L'/') ||
(Name[0] == L'-') ||
(Name[0] == L'+')
) {
return (TRUE);
}
return (FALSE);
}
/**
Checks the command line arguments passed against the list of valid ones.
If no initialization is required, then return RETURN_SUCCESS.
@param[in] CheckList pointer to list of parameters to check
@param[out] CheckPackage pointer to pointer to list checked values
@param[out] ProblemParam optional pointer to pointer to unicode string for
the paramater that caused failure. If used then the
caller is responsible for freeing the memory.
@param[in] AutoPageBreak will automatically set PageBreakEnabled for "b" parameter
@param[in] Argv pointer to array of parameters
@param[in] Argc Count of parameters in Argv
@param[in] AlwaysAllowNumbers TRUE to allow numbers always, FALSE otherwise.
@retval EFI_SUCCESS The operation completed sucessfully.
@retval EFI_OUT_OF_RESOURCES A memory allocation failed
@retval EFI_INVALID_PARAMETER A parameter was invalid
@retval EFI_VOLUME_CORRUPTED the command line was corrupt. an argument was
duplicated. the duplicated command line argument
was returned in ProblemParam if provided.
@retval EFI_NOT_FOUND a argument required a value that was missing.
the invalid command line argument was returned in
ProblemParam if provided.
**/
EFI_STATUS
EFIAPI
InternalCommandLineParse (
IN CONST SHELL_PARAM_ITEM *CheckList,
OUT LIST_ENTRY **CheckPackage,
OUT CHAR16 **ProblemParam OPTIONAL,
IN BOOLEAN AutoPageBreak,
IN CONST CHAR16 **Argv,
IN UINTN Argc,
IN BOOLEAN AlwaysAllowNumbers
)
{
UINTN LoopCounter;
SHELL_PARAM_TYPE CurrentItemType;
SHELL_PARAM_PACKAGE *CurrentItemPackage;
UINTN GetItemValue;
UINTN ValueSize;
UINTN Count;
CONST CHAR16 *TempPointer;
CurrentItemPackage = NULL;
GetItemValue = 0;
ValueSize = 0;
Count = 0;
//
// If there is only 1 item we dont need to do anything
//
if (Argc < 1) {
*CheckPackage = NULL;
return (EFI_SUCCESS);
}
//
// ASSERTs
//
ASSERT(CheckList != NULL);
ASSERT(Argv != NULL);
//
// initialize the linked list
//
*CheckPackage = (LIST_ENTRY*)AllocateZeroPool(sizeof(LIST_ENTRY));
if (*CheckPackage == NULL) {
return (EFI_OUT_OF_RESOURCES);
}
InitializeListHead(*CheckPackage);
//
// loop through each of the arguments
//
for (LoopCounter = 0 ; LoopCounter < Argc ; ++LoopCounter) {
if (Argv[LoopCounter] == NULL) {
//
// do nothing for NULL argv
//
} else if (InternalIsOnCheckList(Argv[LoopCounter], CheckList, &CurrentItemType)) {
//
// We might have leftover if last parameter didnt have optional value
//
if (GetItemValue != 0) {
GetItemValue = 0;
InsertHeadList(*CheckPackage, &CurrentItemPackage->Link);
}
//
// this is a flag
//
CurrentItemPackage = AllocateZeroPool(sizeof(SHELL_PARAM_PACKAGE));
if (CurrentItemPackage == NULL) {
ShellCommandLineFreeVarList(*CheckPackage);
*CheckPackage = NULL;
return (EFI_OUT_OF_RESOURCES);
}
CurrentItemPackage->Name = AllocateZeroPool(StrSize(Argv[LoopCounter]));
if (CurrentItemPackage->Name == NULL) {
ShellCommandLineFreeVarList(*CheckPackage);
*CheckPackage = NULL;
return (EFI_OUT_OF_RESOURCES);
}
StrCpy(CurrentItemPackage->Name, Argv[LoopCounter]);
CurrentItemPackage->Type = CurrentItemType;
CurrentItemPackage->OriginalPosition = (UINTN)(-1);
CurrentItemPackage->Value = NULL;
//
// Does this flag require a value
//
switch (CurrentItemPackage->Type) {
//
// possibly trigger the next loop(s) to populate the value of this item
//
case TypeValue:
GetItemValue = 1;
ValueSize = 0;
break;
case TypeDoubleValue:
GetItemValue = 2;
ValueSize = 0;
break;
case TypeMaxValue:
GetItemValue = (UINTN)(-1);
ValueSize = 0;
break;
default:
//
// this item has no value expected; we are done
//
InsertHeadList(*CheckPackage, &CurrentItemPackage->Link);
ASSERT(GetItemValue == 0);
break;
}
} else if (GetItemValue != 0 && !InternalIsFlag(Argv[LoopCounter], AlwaysAllowNumbers)) {
ASSERT(CurrentItemPackage != NULL);
//
// get the item VALUE for a previous flag
//
CurrentItemPackage->Value = ReallocatePool(ValueSize, ValueSize + StrSize(Argv[LoopCounter]) + sizeof(CHAR16), CurrentItemPackage->Value);
ASSERT(CurrentItemPackage->Value != NULL);
if (ValueSize == 0) {
StrCpy(CurrentItemPackage->Value, Argv[LoopCounter]);
} else {
StrCat(CurrentItemPackage->Value, L" ");
StrCat(CurrentItemPackage->Value, Argv[LoopCounter]);
}
ValueSize += StrSize(Argv[LoopCounter]) + sizeof(CHAR16);
GetItemValue--;
if (GetItemValue == 0) {
InsertHeadList(*CheckPackage, &CurrentItemPackage->Link);
}
} else if (!InternalIsFlag(Argv[LoopCounter], AlwaysAllowNumbers) ){ //|| ProblemParam == NULL) {
//
// add this one as a non-flag
//
TempPointer = Argv[LoopCounter];
if ((*TempPointer == L'^' && *(TempPointer+1) == L'-')
|| (*TempPointer == L'^' && *(TempPointer+1) == L'/')
|| (*TempPointer == L'^' && *(TempPointer+1) == L'+')
){
TempPointer++;
}
CurrentItemPackage = AllocateZeroPool(sizeof(SHELL_PARAM_PACKAGE));
if (CurrentItemPackage == NULL) {
ShellCommandLineFreeVarList(*CheckPackage);
*CheckPackage = NULL;
return (EFI_OUT_OF_RESOURCES);
}
CurrentItemPackage->Name = NULL;
CurrentItemPackage->Type = TypePosition;
CurrentItemPackage->Value = AllocateZeroPool(StrSize(TempPointer));
if (CurrentItemPackage->Value == NULL) {
ShellCommandLineFreeVarList(*CheckPackage);
*CheckPackage = NULL;
return (EFI_OUT_OF_RESOURCES);
}
StrCpy(CurrentItemPackage->Value, TempPointer);
CurrentItemPackage->OriginalPosition = Count++;
InsertHeadList(*CheckPackage, &CurrentItemPackage->Link);
} else {
//
// this was a non-recognised flag... error!
//
if (ProblemParam != NULL) {
*ProblemParam = AllocateZeroPool(StrSize(Argv[LoopCounter]));
if (*ProblemParam != NULL) {
StrCpy(*ProblemParam, Argv[LoopCounter]);
}
}
ShellCommandLineFreeVarList(*CheckPackage);
*CheckPackage = NULL;
return (EFI_VOLUME_CORRUPTED);
}
}
if (GetItemValue != 0) {
GetItemValue = 0;
InsertHeadList(*CheckPackage, &CurrentItemPackage->Link);
}
//
// support for AutoPageBreak
//
if (AutoPageBreak && ShellCommandLineGetFlag(*CheckPackage, L"-b")) {
ShellSetPageBreakMode(TRUE);
}
return (EFI_SUCCESS);
}
/**
Checks the command line arguments passed against the list of valid ones.
Optionally removes NULL values first.
If no initialization is required, then return RETURN_SUCCESS.
@param[in] CheckList The pointer to list of parameters to check.
@param[out] CheckPackage The package of checked values.
@param[out] ProblemParam Optional pointer to pointer to unicode string for
the paramater that caused failure.
@param[in] AutoPageBreak Will automatically set PageBreakEnabled.
@param[in] AlwaysAllowNumbers Will never fail for number based flags.
@retval EFI_SUCCESS The operation completed sucessfully.
@retval EFI_OUT_OF_RESOURCES A memory allocation failed.
@retval EFI_INVALID_PARAMETER A parameter was invalid.
@retval EFI_VOLUME_CORRUPTED The command line was corrupt.
@retval EFI_DEVICE_ERROR The commands contained 2 opposing arguments. One
of the command line arguments was returned in
ProblemParam if provided.
@retval EFI_NOT_FOUND A argument required a value that was missing.
The invalid command line argument was returned in
ProblemParam if provided.
**/
EFI_STATUS
EFIAPI
ShellCommandLineParseEx (
IN CONST SHELL_PARAM_ITEM *CheckList,
OUT LIST_ENTRY **CheckPackage,
OUT CHAR16 **ProblemParam OPTIONAL,
IN BOOLEAN AutoPageBreak,
IN BOOLEAN AlwaysAllowNumbers
)
{
//
// ASSERT that CheckList and CheckPackage aren't NULL
//
ASSERT(CheckList != NULL);
ASSERT(CheckPackage != NULL);
//
// Check for UEFI Shell 2.0 protocols
//
if (gEfiShellParametersProtocol != NULL) {
return (InternalCommandLineParse(CheckList,
CheckPackage,
ProblemParam,
AutoPageBreak,
(CONST CHAR16**) gEfiShellParametersProtocol->Argv,
gEfiShellParametersProtocol->Argc,
AlwaysAllowNumbers));
}
//
// ASSERT That EFI Shell is not required
//
ASSERT (mEfiShellInterface != NULL);
return (InternalCommandLineParse(CheckList,
CheckPackage,
ProblemParam,
AutoPageBreak,
(CONST CHAR16**) mEfiShellInterface->Argv,
mEfiShellInterface->Argc,
AlwaysAllowNumbers));
}
/**
Frees shell variable list that was returned from ShellCommandLineParse.
This function will free all the memory that was used for the CheckPackage
list of postprocessed shell arguments.
this function has no return value.
if CheckPackage is NULL, then return
@param CheckPackage the list to de-allocate
**/
VOID
EFIAPI
ShellCommandLineFreeVarList (
IN LIST_ENTRY *CheckPackage
)
{
LIST_ENTRY *Node;
//
// check for CheckPackage == NULL
//
if (CheckPackage == NULL) {
return;
}
//
// for each node in the list
//
for ( Node = GetFirstNode(CheckPackage)
; !IsListEmpty(CheckPackage)
; Node = GetFirstNode(CheckPackage)
){
//
// Remove it from the list
//
RemoveEntryList(Node);
//
// if it has a name free the name
//
if (((SHELL_PARAM_PACKAGE*)Node)->Name != NULL) {
FreePool(((SHELL_PARAM_PACKAGE*)Node)->Name);
}
//
// if it has a value free the value
//
if (((SHELL_PARAM_PACKAGE*)Node)->Value != NULL) {
FreePool(((SHELL_PARAM_PACKAGE*)Node)->Value);
}
//
// free the node structure
//
FreePool((SHELL_PARAM_PACKAGE*)Node);
}
//
// free the list head node
//
FreePool(CheckPackage);
}
/**
Checks for presence of a flag parameter
flag arguments are in the form of "-<Key>" or "/<Key>", but do not have a value following the key
if CheckPackage is NULL then return FALSE.
if KeyString is NULL then ASSERT()
@param CheckPackage The package of parsed command line arguments
@param KeyString the Key of the command line argument to check for
@retval TRUE the flag is on the command line
@retval FALSE the flag is not on the command line
**/
BOOLEAN
EFIAPI
ShellCommandLineGetFlag (
IN CONST LIST_ENTRY * CONST CheckPackage,
IN CONST CHAR16 * CONST KeyString
)
{
LIST_ENTRY *Node;
CHAR16 *TempString;
//
// return FALSE for no package or KeyString is NULL
//
if (CheckPackage == NULL || KeyString == NULL) {
return (FALSE);
}
//
// enumerate through the list of parametrs
//
for ( Node = GetFirstNode(CheckPackage)
; !IsNull (CheckPackage, Node)
; Node = GetNextNode(CheckPackage, Node)
){
//
// If the Name matches, return TRUE (and there may be NULL name)
//
if (((SHELL_PARAM_PACKAGE*)Node)->Name != NULL) {
//
// If Type is TypeStart then only compare the begining of the strings
//
if (((SHELL_PARAM_PACKAGE*)Node)->Type == TypeStart) {
if (StrnCmp(KeyString, ((SHELL_PARAM_PACKAGE*)Node)->Name, StrLen(KeyString)) == 0) {
return (TRUE);
}
TempString = NULL;
TempString = StrnCatGrow(&TempString, NULL, KeyString, StrLen(((SHELL_PARAM_PACKAGE*)Node)->Name));
if (TempString != NULL) {
if (StringNoCaseCompare(&KeyString, &((SHELL_PARAM_PACKAGE*)Node)->Name) == 0) {
FreePool(TempString);
return (TRUE);
}
FreePool(TempString);
}
} else if (StringNoCaseCompare(&KeyString, &((SHELL_PARAM_PACKAGE*)Node)->Name) == 0) {
return (TRUE);
}
}
}
return (FALSE);
}
/**
Returns value from command line argument.
Value parameters are in the form of "-<Key> value" or "/<Key> value".
If CheckPackage is NULL, then return NULL.
@param[in] CheckPackage The package of parsed command line arguments.
@param[in] KeyString The Key of the command line argument to check for.
@retval NULL The flag is not on the command line.
@retval !=NULL The pointer to unicode string of the value.
**/
CONST CHAR16*
EFIAPI
ShellCommandLineGetValue (
IN CONST LIST_ENTRY *CheckPackage,
IN CHAR16 *KeyString
)
{
LIST_ENTRY *Node;
CHAR16 *TempString;
//
// return NULL for no package or KeyString is NULL
//
if (CheckPackage == NULL || KeyString == NULL) {
return (NULL);
}
//
// enumerate through the list of parametrs
//
for ( Node = GetFirstNode(CheckPackage)
; !IsNull (CheckPackage, Node)
; Node = GetNextNode(CheckPackage, Node)
){
//
// If the Name matches, return TRUE (and there may be NULL name)
//
if (((SHELL_PARAM_PACKAGE*)Node)->Name != NULL) {
//
// If Type is TypeStart then only compare the begining of the strings
//
if (((SHELL_PARAM_PACKAGE*)Node)->Type == TypeStart) {
if (StrnCmp(KeyString, ((SHELL_PARAM_PACKAGE*)Node)->Name, StrLen(KeyString)) == 0) {
return (((SHELL_PARAM_PACKAGE*)Node)->Name + StrLen(KeyString));
}
TempString = NULL;
TempString = StrnCatGrow(&TempString, NULL, KeyString, StrLen(((SHELL_PARAM_PACKAGE*)Node)->Name));
if (TempString != NULL) {
if (StringNoCaseCompare(&KeyString, &((SHELL_PARAM_PACKAGE*)Node)->Name) == 0) {
FreePool(TempString);
return (((SHELL_PARAM_PACKAGE*)Node)->Name + StrLen(KeyString));
}
FreePool(TempString);
}
} else if (StringNoCaseCompare(&KeyString, &((SHELL_PARAM_PACKAGE*)Node)->Name) == 0) {
return (((SHELL_PARAM_PACKAGE*)Node)->Value);
}
}
}
return (NULL);
}
/**
Returns raw value from command line argument.
Raw value parameters are in the form of "value" in a specific position in the list.
If CheckPackage is NULL, then return NULL.
@param[in] CheckPackage The package of parsed command line arguments.
@param[in] Position The position of the value.
@retval NULL The flag is not on the command line.
@retval !=NULL The pointer to unicode string of the value.
**/
CONST CHAR16*
EFIAPI
ShellCommandLineGetRawValue (
IN CONST LIST_ENTRY * CONST CheckPackage,
IN UINTN Position
)
{
LIST_ENTRY *Node;
//
// check for CheckPackage == NULL
//
if (CheckPackage == NULL) {
return (NULL);
}
//
// enumerate through the list of parametrs
//
for ( Node = GetFirstNode(CheckPackage)
; !IsNull (CheckPackage, Node)
; Node = GetNextNode(CheckPackage, Node)
){
//
// If the position matches, return the value
//
if (((SHELL_PARAM_PACKAGE*)Node)->OriginalPosition == Position) {
return (((SHELL_PARAM_PACKAGE*)Node)->Value);
}
}
return (NULL);
}
/**
returns the number of command line value parameters that were parsed.
this will not include flags.
@param[in] CheckPackage The package of parsed command line arguments.
@retval (UINTN)-1 No parsing has ocurred
@return other The number of value parameters found
**/
UINTN
EFIAPI
ShellCommandLineGetCount(
IN CONST LIST_ENTRY *CheckPackage
)
{
LIST_ENTRY *Node1;
UINTN Count;
if (CheckPackage == NULL) {
return (0);
}
for ( Node1 = GetFirstNode(CheckPackage), Count = 0
; !IsNull (CheckPackage, Node1)
; Node1 = GetNextNode(CheckPackage, Node1)
){
if (((SHELL_PARAM_PACKAGE*)Node1)->Name == NULL) {
Count++;
}
}
return (Count);
}
/**
Determins if a parameter is duplicated.
If Param is not NULL then it will point to a callee allocated string buffer
with the parameter value if a duplicate is found.
If CheckPackage is NULL, then ASSERT.
@param[in] CheckPackage The package of parsed command line arguments.
@param[out] Param Upon finding one, a pointer to the duplicated parameter.
@retval EFI_SUCCESS No parameters were duplicated.
@retval EFI_DEVICE_ERROR A duplicate was found.
**/
EFI_STATUS
EFIAPI
ShellCommandLineCheckDuplicate (
IN CONST LIST_ENTRY *CheckPackage,
OUT CHAR16 **Param
)
{
LIST_ENTRY *Node1;
LIST_ENTRY *Node2;
ASSERT(CheckPackage != NULL);
for ( Node1 = GetFirstNode(CheckPackage)
; !IsNull (CheckPackage, Node1)
; Node1 = GetNextNode(CheckPackage, Node1)
){
for ( Node2 = GetNextNode(CheckPackage, Node1)
; !IsNull (CheckPackage, Node2)
; Node2 = GetNextNode(CheckPackage, Node2)
){
if ((((SHELL_PARAM_PACKAGE*)Node1)->Name != NULL) && (((SHELL_PARAM_PACKAGE*)Node2)->Name != NULL) && StrCmp(((SHELL_PARAM_PACKAGE*)Node1)->Name, ((SHELL_PARAM_PACKAGE*)Node2)->Name) == 0) {
if (Param != NULL) {
*Param = NULL;
*Param = StrnCatGrow(Param, NULL, ((SHELL_PARAM_PACKAGE*)Node1)->Name, 0);
}
return (EFI_DEVICE_ERROR);
}
}
}
return (EFI_SUCCESS);
}
/**
This is a find and replace function. Upon successful return the NewString is a copy of
SourceString with each instance of FindTarget replaced with ReplaceWith.
If SourceString and NewString overlap the behavior is undefined.
If the string would grow bigger than NewSize it will halt and return error.
@param[in] SourceString The string with source buffer.
@param[in, out] NewString The string with resultant buffer.
@param[in] NewSize The size in bytes of NewString.
@param[in] FindTarget The string to look for.
@param[in] ReplaceWith The string to replace FindTarget with.
@param[in] SkipPreCarrot If TRUE will skip a FindTarget that has a '^'
immediately before it.
@param[in] ParameterReplacing If TRUE will add "" around items with spaces.
@retval EFI_INVALID_PARAMETER SourceString was NULL.
@retval EFI_INVALID_PARAMETER NewString was NULL.
@retval EFI_INVALID_PARAMETER FindTarget was NULL.
@retval EFI_INVALID_PARAMETER ReplaceWith was NULL.
@retval EFI_INVALID_PARAMETER FindTarget had length < 1.
@retval EFI_INVALID_PARAMETER SourceString had length < 1.
@retval EFI_BUFFER_TOO_SMALL NewSize was less than the minimum size to hold
the new string (truncation occurred).
@retval EFI_SUCCESS The string was successfully copied with replacement.
**/
EFI_STATUS
EFIAPI
ShellCopySearchAndReplace(
IN CHAR16 CONST *SourceString,
IN OUT CHAR16 *NewString,
IN UINTN NewSize,
IN CONST CHAR16 *FindTarget,
IN CONST CHAR16 *ReplaceWith,
IN CONST BOOLEAN SkipPreCarrot,
IN CONST BOOLEAN ParameterReplacing
)
{
UINTN Size;
CHAR16 *Replace;
if ( (SourceString == NULL)
|| (NewString == NULL)
|| (FindTarget == NULL)
|| (ReplaceWith == NULL)
|| (StrLen(FindTarget) < 1)
|| (StrLen(SourceString) < 1)
){
return (EFI_INVALID_PARAMETER);
}
Replace = NULL;
if (StrStr(ReplaceWith, L" ") == NULL || !ParameterReplacing) {
Replace = StrnCatGrow(&Replace, NULL, ReplaceWith, 0);
} else {
Replace = AllocateZeroPool(StrSize(ReplaceWith) + 2*sizeof(CHAR16));
if (Replace != NULL) {
UnicodeSPrint(Replace, StrSize(ReplaceWith) + 2*sizeof(CHAR16), L"\"%s\"", ReplaceWith);
}
}
if (Replace == NULL) {
return (EFI_OUT_OF_RESOURCES);
}
NewString = SetMem16(NewString, NewSize, CHAR_NULL);
while (*SourceString != CHAR_NULL) {
//
// if we find the FindTarget and either Skip == FALSE or Skip and we
// dont have a carrot do a replace...
//
if (StrnCmp(SourceString, FindTarget, StrLen(FindTarget)) == 0
&& ((SkipPreCarrot && *(SourceString-1) != L'^') || !SkipPreCarrot)
){
SourceString += StrLen(FindTarget);
Size = StrSize(NewString);
if ((Size + (StrLen(Replace)*sizeof(CHAR16))) > NewSize) {
FreePool(Replace);
return (EFI_BUFFER_TOO_SMALL);
}
StrCat(NewString, Replace);
} else {
Size = StrSize(NewString);
if (Size + sizeof(CHAR16) > NewSize) {
FreePool(Replace);
return (EFI_BUFFER_TOO_SMALL);
}
StrnCat(NewString, SourceString, 1);
SourceString++;
}
}
FreePool(Replace);
return (EFI_SUCCESS);
}
/**
Internal worker function to output a string.
This function will output a string to the correct StdOut.
@param[in] String The string to print out.
@retval EFI_SUCCESS The operation was sucessful.
@retval !EFI_SUCCESS The operation failed.
**/
EFI_STATUS
EFIAPI
InternalPrintTo (
IN CONST CHAR16 *String
)
{
UINTN Size;
Size = StrSize(String) - sizeof(CHAR16);
if (Size == 0) {
return (EFI_SUCCESS);
}
if (gEfiShellParametersProtocol != NULL) {
return (gEfiShellProtocol->WriteFile(gEfiShellParametersProtocol->StdOut, &Size, (VOID*)String));
}
if (mEfiShellInterface != NULL) {
if (mEfiShellInterface->RedirArgc == 0) {
//
// Divide in half for old shell. Must be string length not size.
//
Size /=2; // Divide in half only when no redirection.
}
return (mEfiShellInterface->StdOut->Write(mEfiShellInterface->StdOut, &Size, (VOID*)String));
}
ASSERT(FALSE);
return (EFI_UNSUPPORTED);
}
/**
Print at a specific location on the screen.
This function will move the cursor to a given screen location and print the specified string
If -1 is specified for either the Row or Col the current screen location for BOTH
will be used.
if either Row or Col is out of range for the current console, then ASSERT
if Format is NULL, then ASSERT
In addition to the standard %-based flags as supported by UefiLib Print() this supports
the following additional flags:
%N - Set output attribute to normal
%H - Set output attribute to highlight
%E - Set output attribute to error
%B - Set output attribute to blue color
%V - Set output attribute to green color
Note: The background color is controlled by the shell command cls.
@param[in] Col the column to print at
@param[in] Row the row to print at
@param[in] Format the format string
@param[in] Marker the marker for the variable argument list
@return EFI_SUCCESS The operation was successful.
@return EFI_DEVICE_ERROR The console device reported an error.
**/
EFI_STATUS
EFIAPI
InternalShellPrintWorker(
IN INT32 Col OPTIONAL,
IN INT32 Row OPTIONAL,
IN CONST CHAR16 *Format,
IN VA_LIST Marker
)
{
EFI_STATUS Status;
CHAR16 *ResumeLocation;
CHAR16 *FormatWalker;
UINTN OriginalAttribute;
CHAR16 *mPostReplaceFormat;
CHAR16 *mPostReplaceFormat2;
mPostReplaceFormat = AllocateZeroPool (PcdGet16 (PcdShellPrintBufferSize));
mPostReplaceFormat2 = AllocateZeroPool (PcdGet16 (PcdShellPrintBufferSize));
if (mPostReplaceFormat == NULL || mPostReplaceFormat2 == NULL) {
SHELL_FREE_NON_NULL(mPostReplaceFormat);
SHELL_FREE_NON_NULL(mPostReplaceFormat2);
return (EFI_OUT_OF_RESOURCES);
}
Status = EFI_SUCCESS;
OriginalAttribute = gST->ConOut->Mode->Attribute;
//
// Back and forth each time fixing up 1 of our flags...
//
Status = ShellCopySearchAndReplace(Format, mPostReplaceFormat, PcdGet16 (PcdShellPrintBufferSize), L"%N", L"%%N", FALSE, FALSE);
ASSERT_EFI_ERROR(Status);
Status = ShellCopySearchAndReplace(mPostReplaceFormat, mPostReplaceFormat2, PcdGet16 (PcdShellPrintBufferSize), L"%E", L"%%E", FALSE, FALSE);
ASSERT_EFI_ERROR(Status);
Status = ShellCopySearchAndReplace(mPostReplaceFormat2, mPostReplaceFormat, PcdGet16 (PcdShellPrintBufferSize), L"%H", L"%%H", FALSE, FALSE);
ASSERT_EFI_ERROR(Status);
Status = ShellCopySearchAndReplace(mPostReplaceFormat, mPostReplaceFormat2, PcdGet16 (PcdShellPrintBufferSize), L"%B", L"%%B", FALSE, FALSE);
ASSERT_EFI_ERROR(Status);
Status = ShellCopySearchAndReplace(mPostReplaceFormat2, mPostReplaceFormat, PcdGet16 (PcdShellPrintBufferSize), L"%V", L"%%V", FALSE, FALSE);
ASSERT_EFI_ERROR(Status);
//
// Use the last buffer from replacing to print from...
//
UnicodeVSPrint (mPostReplaceFormat2, PcdGet16 (PcdShellPrintBufferSize), mPostReplaceFormat, Marker);
if (Col != -1 && Row != -1) {
Status = gST->ConOut->SetCursorPosition(gST->ConOut, Col, Row);
}
FormatWalker = mPostReplaceFormat2;
while (*FormatWalker != CHAR_NULL) {
//
// Find the next attribute change request
//
ResumeLocation = StrStr(FormatWalker, L"%");
if (ResumeLocation != NULL) {
*ResumeLocation = CHAR_NULL;
}
//
// print the current FormatWalker string
//
if (StrLen(FormatWalker)>0) {
Status = InternalPrintTo(FormatWalker);
if (EFI_ERROR(Status)) {
break;
}
}
//
// update the attribute
//
if (ResumeLocation != NULL) {
if (*(ResumeLocation-1) == L'^') {
//
// Print a simple '%' symbol
//
Status = InternalPrintTo(L"%");
ResumeLocation = ResumeLocation - 1;
} else {
switch (*(ResumeLocation+1)) {
case (L'N'):
gST->ConOut->SetAttribute(gST->ConOut, OriginalAttribute);
break;
case (L'E'):
gST->ConOut->SetAttribute(gST->ConOut, EFI_TEXT_ATTR(EFI_YELLOW, ((OriginalAttribute&(BIT4|BIT5|BIT6))>>4)));
break;
case (L'H'):
gST->ConOut->SetAttribute(gST->ConOut, EFI_TEXT_ATTR(EFI_WHITE, ((OriginalAttribute&(BIT4|BIT5|BIT6))>>4)));
break;
case (L'B'):
gST->ConOut->SetAttribute(gST->ConOut, EFI_TEXT_ATTR(EFI_BLUE, ((OriginalAttribute&(BIT4|BIT5|BIT6))>>4)));
break;
case (L'V'):
gST->ConOut->SetAttribute(gST->ConOut, EFI_TEXT_ATTR(EFI_GREEN, ((OriginalAttribute&(BIT4|BIT5|BIT6))>>4)));
break;
default:
//
// Print a simple '%' symbol
//
Status = InternalPrintTo(L"%");
if (EFI_ERROR(Status)) {
break;
}
ResumeLocation = ResumeLocation - 1;
break;
}
}
} else {
//
// reset to normal now...
//
break;
}
//
// update FormatWalker to Resume + 2 (skip the % and the indicator)
//
FormatWalker = ResumeLocation + 2;
}
gST->ConOut->SetAttribute(gST->ConOut, OriginalAttribute);
SHELL_FREE_NON_NULL(mPostReplaceFormat);
SHELL_FREE_NON_NULL(mPostReplaceFormat2);
return (Status);
}
/**
Print at a specific location on the screen.
This function will move the cursor to a given screen location and print the specified string.
If -1 is specified for either the Row or Col the current screen location for BOTH
will be used.
If either Row or Col is out of range for the current console, then ASSERT.
If Format is NULL, then ASSERT.
In addition to the standard %-based flags as supported by UefiLib Print() this supports
the following additional flags:
%N - Set output attribute to normal
%H - Set output attribute to highlight
%E - Set output attribute to error
%B - Set output attribute to blue color
%V - Set output attribute to green color
Note: The background color is controlled by the shell command cls.
@param[in] Col the column to print at
@param[in] Row the row to print at
@param[in] Format the format string
@param[in] ... The variable argument list.
@return EFI_SUCCESS The printing was successful.
@return EFI_DEVICE_ERROR The console device reported an error.
**/
EFI_STATUS
EFIAPI
ShellPrintEx(
IN INT32 Col OPTIONAL,
IN INT32 Row OPTIONAL,
IN CONST CHAR16 *Format,
...
)
{
VA_LIST Marker;
EFI_STATUS RetVal;
if (Format == NULL) {
return (EFI_INVALID_PARAMETER);
}
VA_START (Marker, Format);
RetVal = InternalShellPrintWorker(Col, Row, Format, Marker);
VA_END(Marker);
return(RetVal);
}
/**
Print at a specific location on the screen.
This function will move the cursor to a given screen location and print the specified string.
If -1 is specified for either the Row or Col the current screen location for BOTH
will be used.
If either Row or Col is out of range for the current console, then ASSERT.
If Format is NULL, then ASSERT.
In addition to the standard %-based flags as supported by UefiLib Print() this supports
the following additional flags:
%N - Set output attribute to normal.
%H - Set output attribute to highlight.
%E - Set output attribute to error.
%B - Set output attribute to blue color.
%V - Set output attribute to green color.
Note: The background color is controlled by the shell command cls.
@param[in] Col The column to print at.
@param[in] Row The row to print at.
@param[in] Language The language of the string to retrieve. If this parameter
is NULL, then the current platform language is used.
@param[in] HiiFormatStringId The format string Id for getting from Hii.
@param[in] HiiFormatHandle The format string Handle for getting from Hii.
@param[in] ... The variable argument list.
@return EFI_SUCCESS The printing was successful.
@return EFI_DEVICE_ERROR The console device reported an error.
**/
EFI_STATUS
EFIAPI
ShellPrintHiiEx(
IN INT32 Col OPTIONAL,
IN INT32 Row OPTIONAL,
IN CONST CHAR8 *Language OPTIONAL,
IN CONST EFI_STRING_ID HiiFormatStringId,
IN CONST EFI_HANDLE HiiFormatHandle,
...
)
{
VA_LIST Marker;
CHAR16 *HiiFormatString;
EFI_STATUS RetVal;
VA_START (Marker, HiiFormatHandle);
HiiFormatString = HiiGetString(HiiFormatHandle, HiiFormatStringId, Language);
ASSERT(HiiFormatString != NULL);
RetVal = InternalShellPrintWorker(Col, Row, HiiFormatString, Marker);
SHELL_FREE_NON_NULL(HiiFormatString);
VA_END(Marker);
return (RetVal);
}
/**
Function to determine if a given filename represents a file or a directory.
@param[in] DirName Path to directory to test.
@retval EFI_SUCCESS The Path represents a directory
@retval EFI_NOT_FOUND The Path does not represent a directory
@retval EFI_OUT_OF_RESOURCES A memory allocation failed.
@return The path failed to open
**/
EFI_STATUS
EFIAPI
ShellIsDirectory(
IN CONST CHAR16 *DirName
)
{
EFI_STATUS Status;
SHELL_FILE_HANDLE Handle;
CHAR16 *TempLocation;
CHAR16 *TempLocation2;
ASSERT(DirName != NULL);
Handle = NULL;
TempLocation = NULL;
Status = ShellOpenFileByName(DirName, &Handle, EFI_FILE_MODE_READ, 0);
if (EFI_ERROR(Status)) {
//
// try good logic first.
//
if (gEfiShellProtocol != NULL) {
TempLocation = StrnCatGrow(&TempLocation, NULL, DirName, 0);
if (TempLocation == NULL) {
ShellCloseFile(&Handle);
return (EFI_OUT_OF_RESOURCES);
}
TempLocation2 = StrStr(TempLocation, L":");
if (TempLocation2 != NULL && StrLen(StrStr(TempLocation, L":")) == 2) {
*(TempLocation2+1) = CHAR_NULL;
}
if (gEfiShellProtocol->GetDevicePathFromMap(TempLocation) != NULL) {
FreePool(TempLocation);
return (EFI_SUCCESS);
}
FreePool(TempLocation);
} else {
//
// probably a map name?!?!!?
//
TempLocation = StrStr(DirName, L"\\");
if (TempLocation != NULL && *(TempLocation+1) == CHAR_NULL) {
return (EFI_SUCCESS);
}
}
return (Status);
}
if (FileHandleIsDirectory(Handle) == EFI_SUCCESS) {
ShellCloseFile(&Handle);
return (EFI_SUCCESS);
}
ShellCloseFile(&Handle);
return (EFI_NOT_FOUND);
}
/**
Function to determine if a given filename represents a file.
@param[in] Name Path to file to test.
@retval EFI_SUCCESS The Path represents a file.
@retval EFI_NOT_FOUND The Path does not represent a file.
@retval other The path failed to open.
**/
EFI_STATUS
EFIAPI
ShellIsFile(
IN CONST CHAR16 *Name
)
{
EFI_STATUS Status;
SHELL_FILE_HANDLE Handle;
ASSERT(Name != NULL);
Handle = NULL;
Status = ShellOpenFileByName(Name, &Handle, EFI_FILE_MODE_READ, 0);
if (EFI_ERROR(Status)) {
return (Status);
}
if (FileHandleIsDirectory(Handle) != EFI_SUCCESS) {
ShellCloseFile(&Handle);
return (EFI_SUCCESS);
}
ShellCloseFile(&Handle);
return (EFI_NOT_FOUND);
}
/**
Function to determine if a given filename represents a file.
This will search the CWD and then the Path.
If Name is NULL, then ASSERT.
@param[in] Name Path to file to test.
@retval EFI_SUCCESS The Path represents a file.
@retval EFI_NOT_FOUND The Path does not represent a file.
@retval other The path failed to open.
**/
EFI_STATUS
EFIAPI
ShellIsFileInPath(
IN CONST CHAR16 *Name
)
{
CHAR16 *NewName;
EFI_STATUS Status;
if (!EFI_ERROR(ShellIsFile(Name))) {
return (EFI_SUCCESS);
}
NewName = ShellFindFilePath(Name);
if (NewName == NULL) {
return (EFI_NOT_FOUND);
}
Status = ShellIsFile(NewName);
FreePool(NewName);
return (Status);
}
/**
Function to determine whether a string is decimal or hex representation of a number
and return the number converted from the string.
@param[in] String String representation of a number
@return the number
@retval (UINTN)(-1) An error ocurred.
**/
UINTN
EFIAPI
ShellStrToUintn(
IN CONST CHAR16 *String
)
{
UINT64 RetVal;
BOOLEAN Hex;
Hex = FALSE;
if (!InternalShellIsHexOrDecimalNumber(String, Hex, TRUE)) {
Hex = TRUE;
}
if (!EFI_ERROR(ShellConvertStringToUint64(String, &RetVal, Hex, TRUE))) {
return ((UINTN)RetVal);
}
return ((UINTN)(-1));
}
/**
Safely append with automatic string resizing given length of Destination and
desired length of copy from Source.
append the first D characters of Source to the end of Destination, where D is
the lesser of Count and the StrLen() of Source. If appending those D characters
will fit within Destination (whose Size is given as CurrentSize) and
still leave room for a NULL terminator, then those characters are appended,
starting at the original terminating NULL of Destination, and a new terminating
NULL is appended.
If appending D characters onto Destination will result in a overflow of the size
given in CurrentSize the string will be grown such that the copy can be performed
and CurrentSize will be updated to the new size.
If Source is NULL, there is nothing to append, just return the current buffer in
Destination.
if Destination is NULL, then ASSERT()
if Destination's current length (including NULL terminator) is already more then
CurrentSize, then ASSERT()
@param[in, out] Destination The String to append onto
@param[in, out] CurrentSize on call the number of bytes in Destination. On
return possibly the new size (still in bytes). if NULL
then allocate whatever is needed.
@param[in] Source The String to append from
@param[in] Count Maximum number of characters to append. if 0 then
all are appended.
@return Destination return the resultant string.
**/
CHAR16*
EFIAPI
StrnCatGrow (
IN OUT CHAR16 **Destination,
IN OUT UINTN *CurrentSize,
IN CONST CHAR16 *Source,
IN UINTN Count
)
{
UINTN DestinationStartSize;
UINTN NewSize;
//
// ASSERTs
//
ASSERT(Destination != NULL);
//
// If there's nothing to do then just return Destination
//
if (Source == NULL) {
return (*Destination);
}
//
// allow for un-initialized pointers, based on size being 0
//
if (CurrentSize != NULL && *CurrentSize == 0) {
*Destination = NULL;
}
//
// allow for NULL pointers address as Destination
//
if (*Destination != NULL) {
ASSERT(CurrentSize != 0);
DestinationStartSize = StrSize(*Destination);
ASSERT(DestinationStartSize <= *CurrentSize);
} else {
DestinationStartSize = 0;
// ASSERT(*CurrentSize == 0);
}
//
// Append all of Source?
//
if (Count == 0) {
Count = StrLen(Source);
}
//
// Test and grow if required
//
if (CurrentSize != NULL) {
NewSize = *CurrentSize;
while (NewSize < (DestinationStartSize + (Count*sizeof(CHAR16)))) {
NewSize += 2 * Count * sizeof(CHAR16);
}
*Destination = ReallocatePool(*CurrentSize, NewSize, *Destination);
*CurrentSize = NewSize;
} else {
*Destination = AllocateZeroPool((Count+1)*sizeof(CHAR16));
}
//
// Now use standard StrnCat on a big enough buffer
//
if (*Destination == NULL) {
return (NULL);
}
return StrnCat(*Destination, Source, Count);
}
/**
Prompt the user and return the resultant answer to the requestor.
This function will display the requested question on the shell prompt and then
wait for an apropriate answer to be input from the console.
if the SHELL_PROMPT_REQUEST_TYPE is SHELL_PROMPT_REQUEST_TYPE_YESNO, ShellPromptResponseTypeQuitContinue
or SHELL_PROMPT_REQUEST_TYPE_YESNOCANCEL then *Response is of type SHELL_PROMPT_RESPONSE.
if the SHELL_PROMPT_REQUEST_TYPE is ShellPromptResponseTypeFreeform then *Response is of type
CHAR16*.
In either case *Response must be callee freed if Response was not NULL;
@param Type What type of question is asked. This is used to filter the input
to prevent invalid answers to question.
@param Prompt Pointer to string prompt to use to request input.
@param Response Pointer to Response which will be populated upon return.
@retval EFI_SUCCESS The operation was sucessful.
@retval EFI_UNSUPPORTED The operation is not supported as requested.
@retval EFI_INVALID_PARAMETER A parameter was invalid.
@return other The operation failed.
**/
EFI_STATUS
EFIAPI
ShellPromptForResponse (
IN SHELL_PROMPT_REQUEST_TYPE Type,
IN CHAR16 *Prompt OPTIONAL,
IN OUT VOID **Response OPTIONAL
)
{
EFI_STATUS Status;
EFI_INPUT_KEY Key;
UINTN EventIndex;
SHELL_PROMPT_RESPONSE *Resp;
UINTN Size;
CHAR16 *Buffer;
Status = EFI_UNSUPPORTED;
Resp = NULL;
Buffer = NULL;
Size = 0;
if (Type != ShellPromptResponseTypeFreeform) {
Resp = (SHELL_PROMPT_RESPONSE*)AllocateZeroPool(sizeof(SHELL_PROMPT_RESPONSE));
if (Resp == NULL) {
return (EFI_OUT_OF_RESOURCES);
}
}
switch(Type) {
case ShellPromptResponseTypeQuitContinue:
if (Prompt != NULL) {
ShellPrintEx(-1, -1, L"%s", Prompt);
}
//
// wait for valid response
//
gBS->WaitForEvent (1, &gST->ConIn->WaitForKey, &EventIndex);
Status = gST->ConIn->ReadKeyStroke (gST->ConIn, &Key);
ASSERT_EFI_ERROR(Status);
ShellPrintEx(-1, -1, L"%c", Key.UnicodeChar);
if (Key.UnicodeChar == L'Q' || Key.UnicodeChar ==L'q') {
*Resp = ShellPromptResponseQuit;
} else {
*Resp = ShellPromptResponseContinue;
}
break;
case ShellPromptResponseTypeYesNoCancel:
if (Prompt != NULL) {
ShellPrintEx(-1, -1, L"%s", Prompt);
}
//
// wait for valid response
//
*Resp = ShellPromptResponseMax;
while (*Resp == ShellPromptResponseMax) {
gBS->WaitForEvent (1, &gST->ConIn->WaitForKey, &EventIndex);
Status = gST->ConIn->ReadKeyStroke (gST->ConIn, &Key);
ASSERT_EFI_ERROR(Status);
ShellPrintEx(-1, -1, L"%c", Key.UnicodeChar);
switch (Key.UnicodeChar) {
case L'Y':
case L'y':
*Resp = ShellPromptResponseYes;
break;
case L'N':
case L'n':
*Resp = ShellPromptResponseNo;
break;
case L'C':
case L'c':
*Resp = ShellPromptResponseCancel;
break;
}
}
break; case ShellPromptResponseTypeYesNoAllCancel:
if (Prompt != NULL) {
ShellPrintEx(-1, -1, L"%s", Prompt);
}
//
// wait for valid response
//
*Resp = ShellPromptResponseMax;
while (*Resp == ShellPromptResponseMax) {
gBS->WaitForEvent (1, &gST->ConIn->WaitForKey, &EventIndex);
Status = gST->ConIn->ReadKeyStroke (gST->ConIn, &Key);
ASSERT_EFI_ERROR(Status);
ShellPrintEx(-1, -1, L"%c", Key.UnicodeChar);
switch (Key.UnicodeChar) {
case L'Y':
case L'y':
*Resp = ShellPromptResponseYes;
break;
case L'N':
case L'n':
*Resp = ShellPromptResponseNo;
break;
case L'A':
case L'a':
*Resp = ShellPromptResponseAll;
break;
case L'C':
case L'c':
*Resp = ShellPromptResponseCancel;
break;
}
}
break;
case ShellPromptResponseTypeEnterContinue:
case ShellPromptResponseTypeAnyKeyContinue:
if (Prompt != NULL) {
ShellPrintEx(-1, -1, L"%s", Prompt);
}
//
// wait for valid response
//
*Resp = ShellPromptResponseMax;
while (*Resp == ShellPromptResponseMax) {
gBS->WaitForEvent (1, &gST->ConIn->WaitForKey, &EventIndex);
if (Type == ShellPromptResponseTypeEnterContinue) {
Status = gST->ConIn->ReadKeyStroke (gST->ConIn, &Key);
ASSERT_EFI_ERROR(Status);
ShellPrintEx(-1, -1, L"%c", Key.UnicodeChar);
if (Key.UnicodeChar == CHAR_CARRIAGE_RETURN) {
*Resp = ShellPromptResponseContinue;
break;
}
}
if (Type == ShellPromptResponseTypeAnyKeyContinue) {
Status = gST->ConIn->ReadKeyStroke (gST->ConIn, &Key);
ASSERT_EFI_ERROR(Status);
*Resp = ShellPromptResponseContinue;
break;
}
}
break;
case ShellPromptResponseTypeYesNo:
if (Prompt != NULL) {
ShellPrintEx(-1, -1, L"%s", Prompt);
}
//
// wait for valid response
//
*Resp = ShellPromptResponseMax;
while (*Resp == ShellPromptResponseMax) {
gBS->WaitForEvent (1, &gST->ConIn->WaitForKey, &EventIndex);
Status = gST->ConIn->ReadKeyStroke (gST->ConIn, &Key);
ASSERT_EFI_ERROR(Status);
ShellPrintEx(-1, -1, L"%c", Key.UnicodeChar);
switch (Key.UnicodeChar) {
case L'Y':
case L'y':
*Resp = ShellPromptResponseYes;
break;
case L'N':
case L'n':
*Resp = ShellPromptResponseNo;
break;
}
}
break;
case ShellPromptResponseTypeFreeform:
if (Prompt != NULL) {
ShellPrintEx(-1, -1, L"%s", Prompt);
}
while(1) {
gBS->WaitForEvent (1, &gST->ConIn->WaitForKey, &EventIndex);
Status = gST->ConIn->ReadKeyStroke (gST->ConIn, &Key);
ASSERT_EFI_ERROR(Status);
ShellPrintEx(-1, -1, L"%c", Key.UnicodeChar);
if (Key.UnicodeChar == CHAR_CARRIAGE_RETURN) {
break;
}
ASSERT((Buffer == NULL && Size == 0) || (Buffer != NULL));
StrnCatGrow(&Buffer, &Size, &Key.UnicodeChar, 1);
}
break;
//
// This is the location to add new prompt types.
//
default:
ASSERT(FALSE);
}
if (Response != NULL) {
if (Resp != NULL) {
*Response = Resp;
} else if (Buffer != NULL) {
*Response = Buffer;
}
} else {
if (Resp != NULL) {
FreePool(Resp);
}
if (Buffer != NULL) {
FreePool(Buffer);
}
}
ShellPrintEx(-1, -1, L"\r\n");
return (Status);
}
/**
Prompt the user and return the resultant answer to the requestor.
This function is the same as ShellPromptForResponse, except that the prompt is
automatically pulled from HII.
@param Type What type of question is asked. This is used to filter the input
to prevent invalid answers to question.
@param[in] HiiFormatStringId The format string Id for getting from Hii.
@param[in] HiiFormatHandle The format string Handle for getting from Hii.
@param Response Pointer to Response which will be populated upon return.
@retval EFI_SUCCESS the operation was sucessful.
@return other the operation failed.
@sa ShellPromptForResponse
**/
EFI_STATUS
EFIAPI
ShellPromptForResponseHii (
IN SHELL_PROMPT_REQUEST_TYPE Type,
IN CONST EFI_STRING_ID HiiFormatStringId,
IN CONST EFI_HANDLE HiiFormatHandle,
IN OUT VOID **Response
)
{
CHAR16 *Prompt;
EFI_STATUS Status;
Prompt = HiiGetString(HiiFormatHandle, HiiFormatStringId, NULL);
Status = ShellPromptForResponse(Type, Prompt, Response);
FreePool(Prompt);
return (Status);
}
/**
Function to determin if an entire string is a valid number.
If Hex it must be preceeded with a 0x or has ForceHex, set TRUE.
@param[in] String The string to evaluate.
@param[in] ForceHex TRUE - always assume hex.
@param[in] StopAtSpace TRUE to halt upon finding a space, FALSE to keep going.
@retval TRUE It is all numeric (dec/hex) characters.
@retval FALSE There is a non-numeric character.
**/
BOOLEAN
EFIAPI
InternalShellIsHexOrDecimalNumber (
IN CONST CHAR16 *String,
IN CONST BOOLEAN ForceHex,
IN CONST BOOLEAN StopAtSpace
)
{
BOOLEAN Hex;
//
// chop off a single negative sign
//
if (String != NULL && *String == L'-') {
String++;
}
if (String == NULL) {
return (FALSE);
}
//
// chop leading zeroes
//
while(String != NULL && *String == L'0'){
String++;
}
//
// allow '0x' or '0X', but not 'x' or 'X'
//
if (String != NULL && (*String == L'x' || *String == L'X')) {
if (*(String-1) != L'0') {
//
// we got an x without a preceeding 0
//
return (FALSE);
}
String++;
Hex = TRUE;
} else if (ForceHex) {
Hex = TRUE;
} else {
Hex = FALSE;
}
//
// loop through the remaining characters and use the lib function
//
for ( ; String != NULL && *String != CHAR_NULL && !(StopAtSpace && *String == L' ') ; String++){
if (Hex) {
if (!ShellIsHexaDecimalDigitCharacter(*String)) {
return (FALSE);
}
} else {
if (!ShellIsDecimalDigitCharacter(*String)) {
return (FALSE);
}
}
}
return (TRUE);
}
/**
Function to determine if a given filename exists.
@param[in] Name Path to test.
@retval EFI_SUCCESS The Path represents a file.
@retval EFI_NOT_FOUND The Path does not represent a file.
@retval other The path failed to open.
**/
EFI_STATUS
EFIAPI
ShellFileExists(
IN CONST CHAR16 *Name
)
{
EFI_STATUS Status;
EFI_SHELL_FILE_INFO *List;
ASSERT(Name != NULL);
List = NULL;
Status = ShellOpenFileMetaArg((CHAR16*)Name, EFI_FILE_MODE_READ, &List);
if (EFI_ERROR(Status)) {
return (Status);
}
ShellCloseFileMetaArg(&List);
return (EFI_SUCCESS);
}
/**
Convert a Unicode character to upper case only if
it maps to a valid small-case ASCII character.
This internal function only deal with Unicode character
which maps to a valid small-case ASCII character, i.e.
L'a' to L'z'. For other Unicode character, the input character
is returned directly.
@param Char The character to convert.
@retval LowerCharacter If the Char is with range L'a' to L'z'.
@retval Unchanged Otherwise.
**/
CHAR16
EFIAPI
InternalShellCharToUpper (
IN CHAR16 Char
)
{
if (Char >= L'a' && Char <= L'z') {
return (CHAR16) (Char - (L'a' - L'A'));
}
return Char;
}
/**
Convert a Unicode character to numerical value.
This internal function only deal with Unicode character
which maps to a valid hexadecimal ASII character, i.e.
L'0' to L'9', L'a' to L'f' or L'A' to L'F'. For other
Unicode character, the value returned does not make sense.
@param Char The character to convert.
@return The numerical value converted.
**/
UINTN
EFIAPI
InternalShellHexCharToUintn (
IN CHAR16 Char
)
{
if (ShellIsDecimalDigitCharacter (Char)) {
return Char - L'0';
}
return (UINTN) (10 + InternalShellCharToUpper (Char) - L'A');
}
/**
Convert a Null-terminated Unicode hexadecimal string to a value of type UINT64.
This function returns a value of type UINTN by interpreting the contents
of the Unicode string specified by String as a hexadecimal number.
The format of the input Unicode string String is:
[spaces][zeros][x][hexadecimal digits].
The valid hexadecimal digit character is in the range [0-9], [a-f] and [A-F].
The prefix "0x" is optional. Both "x" and "X" is allowed in "0x" prefix.
If "x" appears in the input string, it must be prefixed with at least one 0.
The function will ignore the pad space, which includes spaces or tab characters,
before [zeros], [x] or [hexadecimal digit]. The running zero before [x] or
[hexadecimal digit] will be ignored. Then, the decoding starts after [x] or the
first valid hexadecimal digit. Then, the function stops at the first character that is
a not a valid hexadecimal character or NULL, whichever one comes first.
If String has only pad spaces, then zero is returned.
If String has no leading pad spaces, leading zeros or valid hexadecimal digits,
then zero is returned.
@param[in] String A pointer to a Null-terminated Unicode string.
@param[out] Value Upon a successful return the value of the conversion.
@param[in] StopAtSpace FALSE to skip spaces.
@retval EFI_SUCCESS The conversion was successful.
@retval EFI_INVALID_PARAMETER A parameter was NULL or invalid.
@retval EFI_DEVICE_ERROR An overflow occured.
**/
EFI_STATUS
EFIAPI
InternalShellStrHexToUint64 (
IN CONST CHAR16 *String,
OUT UINT64 *Value,
IN CONST BOOLEAN StopAtSpace
)
{
UINT64 Result;
if (String == NULL || StrSize(String) == 0 || Value == NULL) {
return (EFI_INVALID_PARAMETER);
}
//
// Ignore the pad spaces (space or tab)
//
while ((*String == L' ') || (*String == L'\t')) {
String++;
}
//
// Ignore leading Zeros after the spaces
//
while (*String == L'0') {
String++;
}
if (InternalShellCharToUpper (*String) == L'X') {
if (*(String - 1) != L'0') {
return 0;
}
//
// Skip the 'X'
//
String++;
}
Result = 0;
//
// Skip spaces if requested
//
while (StopAtSpace && *String == L' ') {
String++;
}
while (ShellIsHexaDecimalDigitCharacter (*String)) {
//
// If the Hex Number represented by String overflows according
// to the range defined by UINTN, then ASSERT().
//
if (!(Result <= (RShiftU64((((UINT64) ~0) - InternalShellHexCharToUintn (*String)), 4)))) {
// if (!(Result <= ((((UINT64) ~0) - InternalShellHexCharToUintn (*String)) >> 4))) {
return (EFI_DEVICE_ERROR);
}
Result = (LShiftU64(Result, 4));
Result += InternalShellHexCharToUintn (*String);
String++;
//
// Skip spaces if requested
//
while (StopAtSpace && *String == L' ') {
String++;
}
}
*Value = Result;
return (EFI_SUCCESS);
}
/**
Convert a Null-terminated Unicode decimal string to a value of
type UINT64.
This function returns a value of type UINT64 by interpreting the contents
of the Unicode string specified by String as a decimal number. The format
of the input Unicode string String is:
[spaces] [decimal digits].
The valid decimal digit character is in the range [0-9]. The
function will ignore the pad space, which includes spaces or
tab characters, before [decimal digits]. The running zero in the
beginning of [decimal digits] will be ignored. Then, the function
stops at the first character that is a not a valid decimal character
or a Null-terminator, whichever one comes first.
If String has only pad spaces, then 0 is returned.
If String has no pad spaces or valid decimal digits,
then 0 is returned.
@param[in] String A pointer to a Null-terminated Unicode string.
@param[out] Value Upon a successful return the value of the conversion.
@param[in] StopAtSpace FALSE to skip spaces.
@retval EFI_SUCCESS The conversion was successful.
@retval EFI_INVALID_PARAMETER A parameter was NULL or invalid.
@retval EFI_DEVICE_ERROR An overflow occured.
**/
EFI_STATUS
EFIAPI
InternalShellStrDecimalToUint64 (
IN CONST CHAR16 *String,
OUT UINT64 *Value,
IN CONST BOOLEAN StopAtSpace
)
{
UINT64 Result;
if (String == NULL || StrSize (String) == 0 || Value == NULL) {
return (EFI_INVALID_PARAMETER);
}
//
// Ignore the pad spaces (space or tab)
//
while ((*String == L' ') || (*String == L'\t')) {
String++;
}
//
// Ignore leading Zeros after the spaces
//
while (*String == L'0') {
String++;
}
Result = 0;
//
// Skip spaces if requested
//
while (StopAtSpace && *String == L' ') {
String++;
}
while (ShellIsDecimalDigitCharacter (*String)) {
//
// If the number represented by String overflows according
// to the range defined by UINT64, then ASSERT().
//
if (!(Result <= (DivU64x32((((UINT64) ~0) - (*String - L'0')),10)))) {
return (EFI_DEVICE_ERROR);
}
Result = MultU64x32(Result, 10) + (*String - L'0');
String++;
//
// Stop at spaces if requested
//
if (StopAtSpace && *String == L' ') {
break;
}
}
*Value = Result;
return (EFI_SUCCESS);
}
/**
Function to verify and convert a string to its numerical value.
If Hex it must be preceeded with a 0x, 0X, or has ForceHex set TRUE.
@param[in] String The string to evaluate.
@param[out] Value Upon a successful return the value of the conversion.
@param[in] ForceHex TRUE - always assume hex.
@param[in] StopAtSpace FALSE to skip spaces.
@retval EFI_SUCCESS The conversion was successful.
@retval EFI_INVALID_PARAMETER String contained an invalid character.
@retval EFI_NOT_FOUND String was a number, but Value was NULL.
**/
EFI_STATUS
EFIAPI
ShellConvertStringToUint64(
IN CONST CHAR16 *String,
OUT UINT64 *Value,
IN CONST BOOLEAN ForceHex,
IN CONST BOOLEAN StopAtSpace
)
{
UINT64 RetVal;
CONST CHAR16 *Walker;
EFI_STATUS Status;
BOOLEAN Hex;
Hex = ForceHex;
if (!InternalShellIsHexOrDecimalNumber(String, Hex, StopAtSpace)) {
if (!Hex) {
Hex = TRUE;
if (!InternalShellIsHexOrDecimalNumber(String, Hex, StopAtSpace)) {
return (EFI_INVALID_PARAMETER);
}
} else {
return (EFI_INVALID_PARAMETER);
}
}
//
// Chop off leading spaces
//
for (Walker = String; Walker != NULL && *Walker != CHAR_NULL && *Walker == L' '; Walker++);
//
// make sure we have something left that is numeric.
//
if (Walker == NULL || *Walker == CHAR_NULL || !InternalShellIsHexOrDecimalNumber(Walker, Hex, StopAtSpace)) {
return (EFI_INVALID_PARAMETER);
}
//
// do the conversion.
//
if (Hex || StrnCmp(Walker, L"0x", 2) == 0 || StrnCmp(Walker, L"0X", 2) == 0){
Status = InternalShellStrHexToUint64(Walker, &RetVal, StopAtSpace);
} else {
Status = InternalShellStrDecimalToUint64(Walker, &RetVal, StopAtSpace);
}
if (Value == NULL && !EFI_ERROR(Status)) {
return (EFI_NOT_FOUND);
}
if (Value != NULL) {
*Value = RetVal;
}
return (Status);
}
/**
Function to determin if an entire string is a valid number.
If Hex it must be preceeded with a 0x or has ForceHex, set TRUE.
@param[in] String The string to evaluate.
@param[in] ForceHex TRUE - always assume hex.
@param[in] StopAtSpace TRUE to halt upon finding a space, FALSE to keep going.
@retval TRUE It is all numeric (dec/hex) characters.
@retval FALSE There is a non-numeric character.
**/
BOOLEAN
EFIAPI
ShellIsHexOrDecimalNumber (
IN CONST CHAR16 *String,
IN CONST BOOLEAN ForceHex,
IN CONST BOOLEAN StopAtSpace
)
{
if (ShellConvertStringToUint64(String, NULL, ForceHex, StopAtSpace) == EFI_NOT_FOUND) {
return (TRUE);
}
return (FALSE);
}
/**
Function to read a single line from a SHELL_FILE_HANDLE. The \n is not included in the returned
buffer. The returned buffer must be callee freed.
If the position upon start is 0, then the Ascii Boolean will be set. This should be
maintained and not changed for all operations with the same file.
@param[in] Handle SHELL_FILE_HANDLE to read from.
@param[in, out] Ascii Boolean value for indicating whether the file is
Ascii (TRUE) or UCS2 (FALSE).
@return The line of text from the file.
@retval NULL There was not enough memory available.
@sa ShellFileHandleReadLine
**/
CHAR16*
EFIAPI
ShellFileHandleReturnLine(
IN SHELL_FILE_HANDLE Handle,
IN OUT BOOLEAN *Ascii
)
{
CHAR16 *RetVal;
UINTN Size;
EFI_STATUS Status;
Size = 0;
RetVal = NULL;
Status = ShellFileHandleReadLine(Handle, RetVal, &Size, FALSE, Ascii);
if (Status == EFI_BUFFER_TOO_SMALL) {
RetVal = AllocateZeroPool(Size);
if (RetVal == NULL) {
return (NULL);
}
Status = ShellFileHandleReadLine(Handle, RetVal, &Size, FALSE, Ascii);
}
if (EFI_ERROR(Status) && (RetVal != NULL)) {
FreePool(RetVal);
RetVal = NULL;
}
return (RetVal);
}
/**
Function to read a single line (up to but not including the \n) from a SHELL_FILE_HANDLE.
If the position upon start is 0, then the Ascii Boolean will be set. This should be
maintained and not changed for all operations with the same file.
@param[in] Handle SHELL_FILE_HANDLE to read from.
@param[in, out] Buffer The pointer to buffer to read into.
@param[in, out] Size The pointer to number of bytes in Buffer.
@param[in] Truncate If the buffer is large enough, this has no effect.
If the buffer is is too small and Truncate is TRUE,
the line will be truncated.
If the buffer is is too small and Truncate is FALSE,
then no read will occur.
@param[in, out] Ascii Boolean value for indicating whether the file is
Ascii (TRUE) or UCS2 (FALSE).
@retval EFI_SUCCESS The operation was successful. The line is stored in
Buffer.
@retval EFI_INVALID_PARAMETER Handle was NULL.
@retval EFI_INVALID_PARAMETER Size was NULL.
@retval EFI_BUFFER_TOO_SMALL Size was not large enough to store the line.
Size was updated to the minimum space required.
**/
EFI_STATUS
EFIAPI
ShellFileHandleReadLine(
IN SHELL_FILE_HANDLE Handle,
IN OUT CHAR16 *Buffer,
IN OUT UINTN *Size,
IN BOOLEAN Truncate,
IN OUT BOOLEAN *Ascii
)
{
EFI_STATUS Status;
CHAR16 CharBuffer;
UINTN CharSize;
UINTN CountSoFar;
UINT64 OriginalFilePosition;
if (Handle == NULL
||Size == NULL
){
return (EFI_INVALID_PARAMETER);
}
if (Buffer == NULL) {
ASSERT(*Size == 0);
} else {
*Buffer = CHAR_NULL;
}
gEfiShellProtocol->GetFilePosition(Handle, &OriginalFilePosition);
if (OriginalFilePosition == 0) {
CharSize = sizeof(CHAR16);
Status = gEfiShellProtocol->ReadFile(Handle, &CharSize, &CharBuffer);
ASSERT_EFI_ERROR(Status);
if (CharBuffer == gUnicodeFileTag) {
*Ascii = FALSE;
} else {
*Ascii = TRUE;
gEfiShellProtocol->SetFilePosition(Handle, OriginalFilePosition);
}
}
for (CountSoFar = 0;;CountSoFar++){
CharBuffer = 0;
if (*Ascii) {
CharSize = sizeof(CHAR8);
} else {
CharSize = sizeof(CHAR16);
}
Status = gEfiShellProtocol->ReadFile(Handle, &CharSize, &CharBuffer);
if ( EFI_ERROR(Status)
|| CharSize == 0
|| (CharBuffer == L'\n' && !(*Ascii))
|| (CharBuffer == '\n' && *Ascii)
){
break;
}
//
// if we have space save it...
//
if ((CountSoFar+1)*sizeof(CHAR16) < *Size){
ASSERT(Buffer != NULL);
((CHAR16*)Buffer)[CountSoFar] = CharBuffer;
((CHAR16*)Buffer)[CountSoFar+1] = CHAR_NULL;
}
}
//
// if we ran out of space tell when...
//
if ((CountSoFar+1)*sizeof(CHAR16) > *Size){
*Size = (CountSoFar+1)*sizeof(CHAR16);
if (!Truncate) {
gEfiShellProtocol->SetFilePosition(Handle, OriginalFilePosition);
} else {
DEBUG((DEBUG_WARN, "The line was truncated in ShellFileHandleReadLine"));
}
return (EFI_BUFFER_TOO_SMALL);
}
while(Buffer[StrLen(Buffer)-1] == L'\r') {
Buffer[StrLen(Buffer)-1] = CHAR_NULL;
}
return (Status);
}
|