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+--------+-------------------------+-------------------------+--------+--------+
|00000000| ff 01 00 00 00 5c 43 42 | 54 52 45 45 5c 50 52 4f |.....\CB|TREE\PRO|
|00000010| 47 52 41 4d 53 5c 47 45 | 54 46 4e 41 4d 45 2e 43 |GRAMS\GE|TFNAME.C|
|00000020| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000030| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000040| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000050| 00 00 00 1c 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000060| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000070| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000080| 2f 2a 2a 2a 2a 2a 2a 2a | 2a 2a 2a 2a 2a 2a 2a 2a |/*******|********|
|00000090| 2a 2a 2a 2a 2a 2a 2a 2a | 2a 2a 2a 2a 2a 2a 2a 2a |********|********|
|000000a0| 2a 2a 2a 2a 2a 2a 2a 2a | 2a 2a 2a 2a 2a 2a 2a 2a |********|********|
|000000b0| 2a 2a 2a 2a 2a 2a 2a 2a | 2a 2a 2a 2a 2a 2a 2a 2a |********|********|
|000000c0| 2a 2a 2a 2a 2a 2a 2a 2a | 2a 0d 0a 20 2a 0d 0a 20 |********|*.. *.. |
|000000d0| 2a 20 67 65 74 66 6e 61 | 6d 65 2e 63 20 20 2d 2d |* getfna|me.c  --|
|000000e0| 20 20 70 72 6f 6d 70 74 | 20 75 73 65 72 20 66 6f |  prompt| user fo|
|000000f0| 72 20 6e 61 6d 65 20 6f | 66 20 65 78 69 73 74 69 |r name o|f existi|
|00000100| 6e 67 20 66 69 6c 65 2e | 0d 0a 20 2a 0d 0a 20 2a |ng file.|.. *.. *|
|00000110| 2f 0d 0a 0d 0a 23 69 6e | 63 6c 75 64 65 20 22 63 |/....#in|clude "c|
|00000120| 62 74 72 65 65 2e 68 22 | 0d 0a 2f 2a 20 62 74 66 |btree.h"|../* btf|
|00000130| 69 6f 2e 68 20 2a 6d 75 | 73 74 2a 20 62 65 20 69 |io.h *mu|st* be i|
|00000140| 6e 63 6c 75 64 65 64 20 | 77 68 65 6e 20 62 74 5f |ncluded |when bt_|
|00000150| 6f 70 65 6e 28 29 20 69 | 73 20 75 73 65 64 20 2a |open() i|s used *|
|00000160| 2f 0d 0a 23 69 6e 63 6c | 75 64 65 20 22 62 74 66 |/..#incl|ude "btf|
|00000170| 69 6f 2e 68 22 0d 0a 0d | 0a 67 65 74 66 6e 61 6d |io.h"...|.getfnam|
|00000180| 65 28 61 72 67 63 2c 20 | 61 72 67 76 2c 20 65 78 |e(argc, |argv, ex|
|00000190| 74 2c 20 66 69 6c 65 6e | 61 6d 65 29 0d 0a 69 6e |t, filen|ame)..in|
|000001a0| 74 20 20 20 61 72 67 63 | 3b 0d 0a 63 68 61 72 20 |t   argc|;..char |
|000001b0| 2a 61 72 67 76 5b 5d 3b | 0d 0a 63 68 61 72 20 2a |*argv[];|..char *|
|000001c0| 65 78 74 3b 20 20 20 20 | 20 2f 2a 20 64 65 66 61 |ext;    | /* defa|
|000001d0| 75 6c 74 20 65 78 74 65 | 6e 73 69 6f 6e 20 74 6f |ult exte|nsion to|
|000001e0| 20 61 64 64 20 2a 2f 0d | 0a 63 68 61 72 20 2a 66 | add */.|.char *f|
|000001f0| 69 6c 65 6e 61 6d 65 3b | 20 20 20 2f 2a 20 77 68 |ilename;|   /* wh|
|00000200| 65 72 65 20 74 6f 20 70 | 75 74 20 63 6f 70 79 20 |ere to p|ut copy |
|00000210| 6f 66 20 76 61 6c 69 64 | 20 66 69 6c 65 6e 61 6d |of valid| filenam|
|00000220| 65 20 2a 2f 0d 0a 7b 0d | 0a 20 20 20 69 6e 74 20 |e */..{.|.   int |
|00000230| 20 66 64 69 64 78 2c 20 | 69 3b 0d 0a 0d 0a 20 20 | fdidx, |i;....  |
|00000240| 20 69 66 20 28 61 72 67 | 63 20 3e 20 31 29 0d 0a | if (arg|c > 1)..|
|00000250| 20 20 20 20 20 20 73 74 | 72 63 70 79 28 66 69 6c |      st|rcpy(fil|
|00000260| 65 6e 61 6d 65 2c 20 61 | 72 67 76 5b 31 5d 29 3b |ename, a|rgv[1]);|
|00000270| 0d 0a 20 20 20 65 6c 73 | 65 0d 0a 20 20 20 7b 0d |..   els|e..   {.|
|00000280| 0a 20 20 20 20 20 20 70 | 72 69 6e 74 66 28 22 5c |.      p|rintf("\|
|00000290| 6e 5c 6e 20 20 20 20 20 | 20 20 20 25 73 22 2c 22 |n\n     |   %s","|
|000002a0| 45 6e 74 65 72 20 46 69 | 6c 65 20 4e 61 6d 65 20 |Enter Fi|le Name |
|000002b0| 28 78 78 78 78 78 78 78 | 78 2e 78 78 78 29 20 3d |(xxxxxxx|x.xxx) =|
|000002c0| 3d 3e 20 22 29 3b 0d 0a | 0d 0a 20 20 20 20 20 20 |=> ");..|..      |
|000002d0| 67 65 74 73 28 66 69 6c | 65 6e 61 6d 65 29 3b 0d |gets(fil|ename);.|
|000002e0| 0a 20 20 20 7d 0d 0a 0d | 0a 20 20 20 72 65 70 65 |.   }...|.   repe|
|000002f0| 61 74 0d 0a 20 20 20 7b | 0d 0a 20 20 20 20 20 20 |at..   {|..      |
|00000300| 66 6f 72 20 28 69 20 3d | 20 30 3b 20 66 69 6c 65 |for (i =| 0; file|
|00000310| 6e 61 6d 65 5b 69 5d 20 | 21 3d 20 27 5c 30 27 3b |name[i] |!= '\0';|
|00000320| 20 2b 2b 69 29 0d 0a 20 | 20 20 20 20 20 7b 0d 0a | ++i).. |     {..|
|00000330| 20 20 20 20 20 20 20 20 | 20 69 66 20 28 66 69 6c |        | if (fil|
|00000340| 65 6e 61 6d 65 5b 69 5d | 20 3d 3d 20 27 2e 27 29 |ename[i]| == '.')|
|00000350| 20 20 20 2f 2a 20 69 66 | 20 65 78 74 65 6e 73 69 |   /* if| extensi|
|00000360| 6f 6e 20 77 61 73 20 73 | 70 65 63 69 66 69 65 64 |on was s|pecified|
|00000370| 2c 20 75 73 65 20 69 74 | 20 2a 2f 0d 0a 20 20 20 |, use it| */..   |
|00000380| 20 20 20 20 20 20 20 20 | 20 62 72 65 61 6b 3b 0d |        | break;.|
|00000390| 0a 20 20 20 20 20 20 7d | 0d 0a 20 20 20 20 20 20 |.      }|..      |
|000003a0| 69 66 20 28 66 69 6c 65 | 6e 61 6d 65 5b 69 5d 20 |if (file|name[i] |
|000003b0| 3d 3d 20 27 5c 30 27 29 | 0d 0a 20 20 20 20 20 20 |== '\0')|..      |
|000003c0| 7b 0d 0a 20 20 20 20 20 | 20 20 20 20 2a 28 66 69 |{..     |    *(fi|
|000003d0| 6c 65 6e 61 6d 65 20 2b | 20 69 29 20 3d 20 27 2e |lename +| i) = '.|
|000003e0| 27 3b 20 20 20 2f 2a 20 | 67 69 76 65 20 69 74 20 |';   /* |give it |
|000003f0| 74 68 65 20 64 65 66 61 | 75 6c 74 20 2a 2f 0d 0a |the defa|ult */..|
|00000400| 20 20 20 20 20 20 20 20 | 20 73 74 72 63 70 79 28 |        | strcpy(|
|00000410| 66 69 6c 65 6e 61 6d 65 | 20 2b 20 69 20 2b 20 31 |filename| + i + 1|
|00000420| 2c 20 65 78 74 29 3b 20 | 20 20 2f 2a 20 67 69 76 |, ext); |  /* giv|
|00000430| 65 20 69 74 20 74 68 65 | 20 64 65 66 61 75 6c 74 |e it the| default|
|00000440| 20 2a 2f 0d 0a 20 20 20 | 20 20 20 7d 0d 0a 0d 0a | */..   |   }....|
|00000450| 20 20 20 20 20 20 69 66 | 28 28 66 64 69 64 78 20 |      if|((fdidx |
|00000460| 3d 20 62 74 5f 6f 70 65 | 6e 28 66 69 6c 65 6e 61 |= bt_ope|n(filena|
|00000470| 6d 65 2c 4f 5f 52 44 57 | 52 29 29 20 3d 3d 20 45 |me,O_RDW|R)) == E|
|00000480| 52 52 29 0d 0a 20 20 20 | 20 20 20 7b 0d 0a 20 20 |RR)..   |   {..  |
|00000490| 20 20 20 20 20 20 20 70 | 72 69 6e 74 66 28 22 5c |       p|rintf("\|
|000004a0| 6e 4c 4f 4f 4b 48 44 52 | 3a 20 63 61 6e 27 74 20 |nLOOKHDR|: can't |
|000004b0| 6f 70 65 6e 20 66 69 6c | 65 20 27 25 73 27 22 2c |open fil|e '%s'",|
|000004c0| 20 66 69 6c 65 6e 61 6d | 65 29 3b 0d 0a 20 20 20 | filenam|e);..   |
|000004d0| 20 20 20 20 20 20 70 72 | 69 6e 74 66 28 22 5c 6e |      pr|intf("\n|
|000004e0| 5c 6e 20 20 20 20 20 20 | 20 20 25 73 22 2c 22 45 |\n      |  %s","E|
|000004f0| 6e 74 65 72 20 46 69 6c | 65 20 4e 61 6d 65 20 28 |nter Fil|e Name (|
|00000500| 78 78 78 78 78 78 78 78 | 2e 78 78 78 29 20 3d 3d |xxxxxxxx|.xxx) ==|
|00000510| 3e 20 22 29 3b 0d 0a 20 | 20 20 20 20 20 20 20 20 |> ");.. |        |
|00000520| 67 65 74 73 28 66 69 6c | 65 6e 61 6d 65 29 3b 0d |gets(fil|ename);.|
|00000530| 0a 20 20 20 20 20 20 20 | 20 20 69 66 20 28 2a 66 |.       |  if (*f|
|00000540| 69 6c 65 6e 61 6d 65 20 | 3d 3d 20 4e 55 4c 20 20 |ilename |== NUL  |
|00000550| 7c 7c 20 74 6f 75 70 70 | 65 72 28 2a 66 69 6c 65 ||| toupp|er(*file|
|00000560| 6e 61 6d 65 29 20 3d 3d | 20 27 58 27 29 0d 0a 20 |name) ==| 'X').. |
|00000570| 20 20 20 20 20 20 20 20 | 20 20 20 65 78 69 74 28 |        |   exit(|
|00000580| 30 29 3b 0d 0a 20 20 20 | 20 20 20 7d 0d 0a 20 20 |0);..   |   }..  |
|00000590| 20 7d 0d 0a 20 20 20 75 | 6e 74 69 6c 28 66 64 69 | }..   u|ntil(fdi|
|000005a0| 64 78 20 21 3d 20 45 52 | 52 29 3b 0d 0a 20 20 20 |dx != ER|R);..   |
|000005b0| 72 65 74 75 72 6e 20 28 | 66 64 69 64 78 29 3b 0d |return (|fdidx);.|
|000005c0| 0a 7d 0d 0a             |                         |.}..    |        |
+--------+-------------------------+-------------------------+--------+--------+