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MacOS 8.1

Win98

DOS

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+--------+-------------------------+-------------------------+--------+--------+
|00000000| 72 65 76 67 72 65 70 2f | 00 00 00 00 00 00 00 00 |revgrep/|........|
|00000010| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|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 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000060| 00 00 00 00 20 20 20 37 | 35 35 20 00 20 20 20 32 |....   7|55 .   2|
|00000070| 34 33 20 00 20 20 20 20 | 31 32 20 00 20 20 20 20 |43 .    |12 .    |
|00000080| 20 20 20 20 20 20 30 20 | 20 34 34 30 34 31 30 34 |      0 | 4404104|
|00000090| 30 37 35 20 20 20 35 34 | 36 34 00 20 00 00 00 00 |075   54|64. ....|
|000000a0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000000b0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000000c0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000000d0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000000e0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000000f0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000100| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000110| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000120| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000130| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000140| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000150| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000160| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000170| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000180| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000190| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000001a0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000001b0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000001c0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000001d0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000001e0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000001f0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000200| 72 65 76 67 72 65 70 2f | 53 68 61 72 46 69 6c 65 |revgrep/|SharFile|
|00000210| 2e 48 65 61 64 65 72 73 | 00 00 00 00 00 00 00 00 |.Headers|........|
|00000220| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000230| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000240| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000250| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000260| 00 00 00 00 20 20 20 36 | 34 34 20 00 20 20 20 32 |....   6|44 .   2|
|00000270| 34 33 20 00 20 20 20 20 | 31 32 20 00 20 20 20 20 |43 .    |12 .    |
|00000280| 20 20 20 32 33 37 30 20 | 20 34 34 30 34 31 30 34 |   2370 | 4404104|
|00000290| 30 37 35 20 20 31 30 35 | 34 35 00 20 00 00 00 00 |075  105|45. ....|
|000002a0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000002b0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000002c0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000002d0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000002e0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000002f0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000300| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000310| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000320| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000330| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000340| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000350| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000360| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000370| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000380| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000390| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000003a0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000003b0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000003c0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000003d0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000003e0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000003f0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000400| 3d 3d 3d 20 72 65 76 67 | 72 65 70 2e 73 68 61 72 |=== revg|rep.shar|
|00000410| 20 3d 3d 3d 3d 3d 3d 3d | 3d 3d 3d 3d 3d 3d 3d 3d | =======|========|
|00000420| 3d 3d 3d 3d 3d 3d 3d 3d | 3d 3d 0a 20 33 2d 4d 61 |========|==. 3-Ma|
|00000430| 72 2d 38 36 20 30 35 3a | 31 38 3a 31 32 2d 4d 53 |r-86 05:|18:12-MS|
|00000440| 54 2c 32 30 31 38 32 3b | 30 30 30 30 30 30 30 30 |T,20182;|00000000|
|00000450| 30 30 30 31 0a 52 65 74 | 75 72 6e 2d 50 61 74 68 |0001.Ret|urn-Path|
|00000460| 3a 20 3c 75 6e 69 78 2d | 73 6f 75 72 63 65 73 2d |: <unix-|sources-|
|00000470| 72 65 71 75 65 73 74 40 | 42 52 4c 2e 41 52 50 41 |request@|BRL.ARPA|
|00000480| 3e 0a 52 65 63 65 69 76 | 65 64 3a 20 66 72 6f 6d |>.Receiv|ed: from|
|00000490| 20 42 52 4c 2d 53 4d 4f | 4b 45 2e 41 52 50 41 20 | BRL-SMO|KE.ARPA |
|000004a0| 62 79 20 53 49 4d 54 45 | 4c 32 30 2e 41 52 50 41 |by SIMTE|L20.ARPA|
|000004b0| 20 77 69 74 68 20 54 43 | 50 3b 20 4d 6f 6e 20 33 | with TC|P; Mon 3|
|000004c0| 20 4d 61 72 20 38 36 20 | 30 35 3a 31 37 3a 32 35 | Mar 86 |05:17:25|
|000004d0| 2d 4d 53 54 0a 52 65 63 | 65 69 76 65 64 3a 20 66 |-MST.Rec|eived: f|
|000004e0| 72 6f 6d 20 55 53 45 4e | 45 54 20 62 79 20 53 4d |rom USEN|ET by SM|
|000004f0| 4f 4b 45 2e 42 52 4c 2e | 41 52 50 41 20 69 64 20 |OKE.BRL.|ARPA id |
|00000500| 61 30 31 32 34 39 36 3b | 20 32 20 4d 61 72 20 38 |a012496;| 2 Mar 8|
|00000510| 36 20 31 36 3a 30 37 20 | 45 53 54 0a 46 72 6f 6d |6 16:07 |EST.From|
|00000520| 3a 20 4e 65 61 6c 20 5a | 69 72 69 6e 67 20 3c 6e |: Neal Z|iring <n|
|00000530| 7a 40 77 75 63 73 2e 75 | 75 63 70 3e 0a 4e 65 77 |z@wucs.u|ucp>.New|
|00000540| 73 67 72 6f 75 70 73 3a | 20 6e 65 74 2e 73 6f 75 |sgroups:| net.sou|
|00000550| 72 63 65 73 0a 53 75 62 | 6a 65 63 74 3a 20 72 65 |rces.Sub|ject: re|
|00000560| 76 65 72 73 65 20 67 72 | 65 70 20 28 6e 6f 77 20 |verse gr|ep (now |
|00000570| 73 79 73 56 20 63 6f 6d | 70 61 74 69 62 6c 65 21 |sysV com|patible!|
|00000580| 29 0a 4d 65 73 73 61 67 | 65 2d 49 44 3a 20 3c 31 |).Messag|e-ID: <1|
|00000590| 34 35 38 40 77 75 63 73 | 2e 55 55 43 50 3e 0a 44 |458@wucs|.UUCP>.D|
|000005a0| 61 74 65 3a 20 32 35 20 | 46 65 62 20 38 36 20 31 |ate: 25 |Feb 86 1|
|000005b0| 37 3a 34 31 3a 33 34 20 | 47 4d 54 0a 4b 65 79 77 |7:41:34 |GMT.Keyw|
|000005c0| 6f 72 64 73 3a 20 67 72 | 65 70 20 73 65 61 72 63 |ords: gr|ep searc|
|000005d0| 68 20 66 69 6c 74 65 72 | 20 74 61 69 6c 20 73 6f |h filter| tail so|
|000005e0| 75 72 63 65 0a 54 6f 3a | 20 20 20 20 20 20 20 75 |urce.To:|       u|
|000005f0| 6e 69 78 2d 73 6f 75 72 | 63 65 73 40 62 72 6c 2d |nix-sour|ces@brl-|
|00000600| 73 6d 6f 6b 65 2e 61 72 | 70 61 0a 0a 3c 3c 49 20 |smoke.ar|pa..<<I |
|00000610| 74 72 69 65 64 20 73 65 | 6e 64 69 6e 67 20 74 68 |tried se|nding th|
|00000620| 69 73 20 74 6f 20 6d 6f | 64 2e 73 6f 75 72 63 65 |is to mo|d.source|
|00000630| 73 2c 20 62 75 74 20 69 | 74 20 63 6f 75 6c 64 6e |s, but i|t couldn|
|00000640| 27 74 20 67 65 74 20 74 | 68 65 72 65 3e 3e 0a 0a |'t get t|here>>..|
|00000650| 47 72 65 70 20 69 73 20 | 6f 6e 65 20 6f 66 20 74 |Grep is |one of t|
|00000660| 68 65 20 6d 6f 73 74 20 | 75 73 65 66 75 6c 20 66 |he most |useful f|
|00000670| 69 6c 74 65 72 73 20 61 | 72 6f 75 6e 64 2c 20 62 |ilters a|round, b|
|00000680| 75 74 20 73 6f 6d 65 74 | 69 6d 65 73 20 79 6f 75 |ut somet|imes you|
|00000690| 0a 61 72 65 20 6d 6f 72 | 65 20 69 6e 74 65 72 65 |.are mor|e intere|
|000006a0| 73 74 65 64 20 69 6e 20 | 77 68 61 74 20 69 73 20 |sted in |what is |
|000006b0| 67 6f 69 6e 67 20 6f 6e | 20 6e 65 61 72 20 74 68 |going on| near th|
|000006c0| 65 20 65 6e 64 20 6f 66 | 20 61 20 66 69 6c 65 20 |e end of| a file |
|000006d0| 74 68 61 6e 0a 79 6f 75 | 20 61 72 65 20 69 6e 20 |than.you| are in |
|000006e0| 77 68 61 74 20 69 73 20 | 67 6f 69 6e 67 20 6f 6e |what is |going on|
|000006f0| 20 61 74 20 74 68 65 20 | 66 72 6f 6e 74 2e 20 20 | at the |front.  |
|00000700| 47 72 65 70 2c 20 61 6e | 64 20 6d 6f 73 74 20 6f |Grep, an|d most o|
|00000710| 74 68 65 72 20 66 69 6c | 74 65 72 73 2c 0a 6c 6f |ther fil|ters,.lo|
|00000720| 6f 6b 20 61 74 20 74 68 | 65 20 66 72 6f 6e 74 20 |ok at th|e front |
|00000730| 6f 66 20 61 20 66 69 6c | 65 20 62 65 66 6f 72 65 |of a fil|e before|
|00000740| 20 70 72 6f 63 65 65 64 | 69 6e 67 20 74 6f 20 69 | proceed|ing to i|
|00000750| 74 73 20 65 6e 64 2e 20 | 20 4c 6f 67 20 66 69 6c |ts end. | Log fil|
|00000760| 65 73 0a 61 72 65 20 6f | 66 74 65 6e 20 6d 6f 73 |es.are o|ften mos|
|00000770| 74 20 69 6e 74 65 72 65 | 73 74 69 6e 67 20 6e 65 |t intere|sting ne|
|00000780| 61 72 20 74 68 65 20 65 | 6e 64 2e 0a 0a 52 65 76 |ar the e|nd...Rev|
|00000790| 67 72 65 70 20 62 65 68 | 61 76 65 73 20 76 65 72 |grep beh|aves ver|
|000007a0| 79 20 6d 75 63 68 20 6c | 69 6b 65 20 67 72 65 70 |y much l|ike grep|
|000007b0| 2c 20 65 78 63 65 70 74 | 20 74 68 61 74 20 69 74 |, except| that it|
|000007c0| 20 72 65 61 64 73 20 6c | 69 6e 65 73 20 6f 66 20 | reads l|ines of |
|000007d0| 61 0a 66 69 6c 65 20 69 | 6e 20 72 65 76 65 72 73 |a.file i|n revers|
|000007e0| 65 20 6f 72 64 65 72 20 | 2d 2d 20 65 6e 64 20 74 |e order |-- end t|
|000007f0| 6f 77 61 72 64 73 20 62 | 65 67 69 6e 6e 69 6e 67 |owards b|eginning|
|00000800| 2e 20 20 41 6c 73 6f 2c | 20 72 65 76 67 72 65 70 |.  Also,| revgrep|
|00000810| 20 73 75 62 73 75 6d 65 | 73 0a 74 68 65 20 66 75 | subsume|s.the fu|
|00000820| 6e 63 74 69 6f 6e 61 6c | 69 74 79 20 6f 66 20 74 |nctional|ity of t|
|00000830| 61 69 6c 2c 20 77 69 74 | 68 6f 75 74 20 74 61 69 |ail, wit|hout tai|
|00000840| 6c 27 73 20 6c 65 6e 67 | 74 68 20 72 65 73 74 72 |l's leng|th restr|
|00000850| 69 63 74 69 6f 6e 73 2e | 0a 0a 49 20 68 6f 70 65 |ictions.|..I hope|
|00000860| 20 42 65 72 6b 65 6c 65 | 79 20 61 6e 64 20 53 79 | Berkele|y and Sy|
|00000870| 73 74 65 6d 56 20 75 73 | 65 72 73 20 66 69 6e 64 |stemV us|ers find|
|00000880| 20 72 65 76 67 72 65 70 | 20 61 73 20 75 73 65 66 | revgrep| as usef|
|00000890| 75 6c 20 61 73 20 49 20 | 64 6f 2e 0a 0a 2e 2e 2e |ul as I |do......|
|000008a0| 6e 7a 20 28 4e 65 61 6c | 20 5a 69 72 69 6e 67 20 |nz (Neal| Ziring |
|000008b0| 40 20 57 61 73 68 69 6e | 67 74 6f 6e 20 55 6e 69 |@ Washin|gton Uni|
|000008c0| 76 65 72 73 69 74 79 20 | 45 6e 67 69 6e 65 65 72 |versity |Engineer|
|000008d0| 69 6e 67 20 43 6f 6d 70 | 75 74 65 72 20 4c 61 62 |ing Comp|uter Lab|
|000008e0| 29 0a 0a 2d 2d 2d 2d 2d | 2d 2d 2d 2d 2d 2d 2d 2d |)..-----|--------|
|000008f0| 2d 2d 2d 2d 2d 2d 2d 0a | 00 00 00 00 00 00 00 00 |-------.|........|
|00000900| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000910| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000920| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000930| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000940| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000950| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000960| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000970| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000980| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000990| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000009a0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000009b0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000009c0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000009d0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000009e0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000009f0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000a00| 72 65 76 67 72 65 70 2f | 52 45 41 44 4d 45 00 00 |revgrep/|README..|
|00000a10| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000a20| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000a30| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000a40| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000a50| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000a60| 00 00 00 00 20 20 20 36 | 34 34 20 00 20 20 20 32 |....   6|44 .   2|
|00000a70| 34 33 20 00 20 20 20 20 | 31 32 20 00 20 20 20 20 |43 .    |12 .    |
|00000a80| 20 20 20 20 33 35 36 20 | 20 34 34 30 34 31 30 34 |    356 | 4404104|
|00000a90| 30 36 37 20 20 20 36 34 | 31 36 00 20 00 00 00 00 |067   64|16. ....|
|00000aa0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000ab0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000ac0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000ad0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000ae0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000af0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000b00| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000b10| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000b20| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000b30| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000b40| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000b50| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000b60| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000b70| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000b80| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000b90| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000ba0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000bb0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000bc0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000bd0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000be0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000bf0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000c00| 54 68 65 20 4d 61 6b 65 | 66 69 6c 65 20 66 6f 72 |The Make|file for|
|00000c10| 20 72 65 76 67 72 65 70 | 20 69 73 20 64 65 73 69 | revgrep| is desi|
|00000c20| 67 6e 65 64 20 66 6f 72 | 20 42 65 72 6b 65 6c 65 |gned for| Berkele|
|00000c30| 79 20 55 6e 69 78 2c 20 | 74 6f 20 63 68 61 6e 67 |y Unix, |to chang|
|00000c40| 65 20 69 74 20 66 6f 72 | 0a 41 54 26 54 20 73 79 |e it for|.AT&T sy|
|00000c50| 73 74 65 6d 20 56 2c 20 | 63 68 61 6e 67 65 20 74 |stem V, |change t|
|00000c60| 68 65 20 43 46 4c 41 47 | 53 20 61 6e 64 20 4c 49 |he CFLAG|S and LI|
|00000c70| 42 45 53 20 76 61 72 69 | 61 62 6c 65 73 20 61 73 |BES vari|ables as|
|00000c80| 20 73 68 6f 77 6e 20 62 | 65 6c 6f 77 2e 0a 0a 43 | shown b|elow...C|
|00000c90| 46 4c 41 47 53 3d 20 2d | 44 55 53 47 0a 4c 49 42 |FLAGS= -|DUSG.LIB|
|00000ca0| 45 53 3d 20 2d 6c 50 57 | 0a 0a 53 65 6e 64 20 61 |ES= -lPW|..Send a|
|00000cb0| 6e 79 20 63 6f 6d 70 6c | 61 69 6e 74 73 20 6f 72 |ny compl|aints or|
|00000cc0| 20 73 75 67 67 65 73 74 | 69 6f 6e 73 20 61 62 6f | suggest|ions abo|
|00000cd0| 75 74 20 72 65 76 67 72 | 65 70 20 74 6f 20 6e 7a |ut revgr|ep to nz|
|00000ce0| 40 77 75 63 73 2e 55 55 | 43 50 20 2e 0a 0a 00 00 |@wucs.UU|CP .....|
|00000cf0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000d00| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000d10| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000d20| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000d30| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000d40| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000d50| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000d60| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000d70| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000d80| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000d90| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000da0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000db0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000dc0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000dd0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000de0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000df0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000e00| 72 65 76 67 72 65 70 2f | 4d 61 6b 65 66 69 6c 65 |revgrep/|Makefile|
|00000e10| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000e20| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000e30| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000e40| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000e50| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000e60| 00 00 00 00 20 20 20 36 | 34 34 20 00 20 20 20 32 |....   6|44 .   2|
|00000e70| 34 33 20 00 20 20 20 20 | 31 32 20 00 20 20 20 20 |43 .    |12 .    |
|00000e80| 20 20 20 20 37 36 33 20 | 20 34 34 30 34 31 30 34 |    763 | 4404104|
|00000e90| 30 37 30 20 20 20 37 31 | 37 32 00 20 00 00 00 00 |070   71|72. ....|
|00000ea0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000eb0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000ec0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000ed0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000ee0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000ef0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000f00| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000f10| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000f20| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000f30| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000f40| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000f50| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000f60| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000f70| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000f80| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000f90| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
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|00001400| 2e 54 48 20 52 45 56 47 | 52 45 50 20 31 20 22 37 |.TH REVG|REP 1 "7|
|00001410| 20 53 65 70 74 65 6d 62 | 65 72 20 31 39 38 35 22 | Septemb|er 1985"|
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|00001470| 2e 53 48 20 53 59 4e 4f | 50 53 49 53 0a 2e 42 20 |.SH SYNO|PSIS..B |
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|00002c00| 75 74 2e 0a 20 2a 20 20 | 20 20 6d 65 61 6e 69 6e |ut.. *  |  meanin|
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|00002c20| 3a 0a 20 2a 0a 20 2a 20 | 20 20 20 20 20 20 20 20 |:. *. * |        |
|00002c30| 20 20 2d 76 09 09 70 72 | 69 6e 74 20 6f 6e 6c 79 |  -v..pr|int only|
|00002c40| 20 6c 69 6e 65 73 20 74 | 68 61 74 20 64 6f 6e 27 | lines t|hat don'|
|00002c50| 74 20 6d 61 74 63 68 0a | 20 2a 20 20 20 20 20 20 |t match.| *      |
|00002c60| 20 20 20 20 20 2d 63 20 | 20 20 20 20 20 20 20 20 |     -c |        |
|00002c70| 70 72 69 6e 74 20 6f 6e | 6c 79 20 61 20 63 6f 75 |print on|ly a cou|
|00002c80| 6e 74 20 6f 66 20 6d 61 | 74 63 68 69 6e 67 20 6c |nt of ma|tching l|
|00002c90| 69 6e 65 73 0a 20 2a 20 | 20 20 20 20 20 20 20 20 |ines. * |        |
|00002ca0| 20 20 2d 6c 20 20 20 20 | 20 20 20 20 20 70 72 69 |  -l    |     pri|
|00002cb0| 6e 74 20 6f 6e 6c 79 20 | 66 69 6c 65 6e 61 6d 65 |nt only |filename|
|00002cc0| 73 20 6f 66 20 66 69 6c | 65 73 20 77 69 74 68 20 |s of fil|es with |
|00002cd0| 6d 61 74 63 68 65 73 0a | 20 2a 20 20 20 20 20 20 |matches.| *      |
|00002ce0| 20 20 20 20 20 2d 6e 20 | 20 20 20 20 20 20 20 20 |     -n |        |
|00002cf0| 70 72 69 6e 74 20 72 65 | 6c 61 74 69 76 65 20 6c |print re|lative l|
|00002d00| 69 6e 65 20 6e 75 6d 62 | 65 72 20 77 69 74 68 20 |ine numb|er with |
|00002d10| 6d 61 74 63 68 65 73 0a | 20 2a 20 20 20 20 20 20 |matches.| *      |
|00002d20| 20 20 20 20 20 2d 62 09 | 09 70 72 69 6e 74 20 62 |     -b.|.print b|
|00002d30| 6c 6f 63 6b 20 6e 75 6d | 62 65 72 20 69 6e 20 66 |lock num|ber in f|
|00002d40| 69 6c 65 20 77 69 74 68 | 20 6d 61 74 63 68 65 73 |ile with| matches|
|00002d50| 0a 20 2a 20 20 20 20 20 | 20 20 20 20 20 20 2d 73 |. *     |      -s|
|00002d60| 20 20 20 20 20 20 20 20 | 20 6e 6f 20 6f 75 74 70 |        | no outp|
|00002d70| 75 74 2c 20 6f 6e 6c 79 | 20 73 74 61 74 75 73 0a |ut, only| status.|
|00002d80| 20 2a 20 20 20 20 20 20 | 20 20 20 20 20 2d 68 20 | *      |     -h |
|00002d90| 20 20 20 20 20 20 20 20 | 64 6f 6e 27 74 20 70 72 |        |don't pr|
|00002da0| 69 6e 74 20 66 69 6c 65 | 6e 61 6d 65 73 20 77 69 |int file|names wi|
|00002db0| 74 68 20 6d 61 74 63 68 | 65 73 0a 20 2a 20 20 20 |th match|es. *   |
|00002dc0| 20 20 20 20 20 20 20 20 | 2d 79 20 20 20 20 20 20 |        |-y      |
|00002dd0| 20 20 20 66 6f 6c 64 20 | 75 70 70 65 72 20 63 61 |   fold |upper ca|
|00002de0| 73 65 20 74 6f 20 6c 6f | 77 65 72 20 6f 6e 20 69 |se to lo|wer on i|
|00002df0| 6e 70 75 74 0a 20 2a 20 | 20 20 20 20 20 20 20 20 |nput. * |        |
|00002e00| 20 20 2d 65 20 20 20 20 | 20 20 20 20 20 6e 65 78 |  -e    |     nex|
|00002e10| 74 20 61 72 67 75 6d 65 | 6e 74 20 69 73 20 74 68 |t argume|nt is th|
|00002e20| 65 20 65 78 70 72 65 73 | 73 69 6f 6e 0a 20 2a 0a |e expres|sion. *.|
|00002e30| 20 2a 20 20 20 20 20 20 | 20 20 20 20 20 2d 74 20 | *      |     -t |
|00002e40| 20 20 20 20 20 20 20 20 | 74 65 78 74 20 66 72 6f |        |text fro|
|00002e50| 6d 20 66 69 72 73 74 20 | 6d 61 74 63 68 20 28 62 |m first |match (b|
|00002e60| 61 63 6b 77 61 72 64 73 | 29 20 74 6f 0a 20 2a 20 |ackwards|) to. * |
|00002e70| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 |        |        |
|00002e80| 20 20 20 20 20 65 6e 64 | 20 69 73 20 70 72 69 6e |     end| is prin|
|00002e90| 74 65 64 20 69 6e 20 63 | 6f 72 72 65 63 74 20 6f |ted in c|orrect o|
|00002ea0| 72 64 65 72 2e 0a 20 2a | 20 20 20 20 20 20 20 20 |rder.. *|        |
|00002eb0| 20 20 20 2d 6e 6e 6e 20 | 20 20 20 20 20 20 66 6f |   -nnn |      fo|
|00002ec0| 72 65 67 6f 20 6d 61 74 | 63 68 65 73 2c 20 64 6f |rego mat|ches, do|
|00002ed0| 20 61 20 2d 74 20 6f 6e | 20 74 68 69 73 20 6d 61 | a -t on| this ma|
|00002ee0| 6e 79 20 6c 69 6e 65 73 | 0a 20 2a 2f 0a 0a 23 69 |ny lines|. */..#i|
|00002ef0| 6e 63 6c 75 64 65 20 3c | 73 74 64 69 6f 2e 68 3e |nclude <|stdio.h>|
|00002f00| 0a 23 69 6e 63 6c 75 64 | 65 20 3c 63 74 79 70 65 |.#includ|e <ctype|
|00002f10| 2e 68 3e 0a 23 69 6e 63 | 6c 75 64 65 20 3c 73 69 |.h>.#inc|lude <si|
|00002f20| 67 6e 61 6c 2e 68 3e 0a | 23 69 66 64 65 66 20 55 |gnal.h>.|#ifdef U|
|00002f30| 53 47 0a 23 69 6e 63 6c | 75 64 65 20 3c 73 79 73 |SG.#incl|ude <sys|
|00002f40| 2f 74 79 70 65 73 2e 68 | 3e 0a 23 69 6e 63 6c 75 |/types.h|>.#inclu|
|00002f50| 64 65 20 3c 73 74 72 69 | 6e 67 2e 68 3e 0a 23 69 |de <stri|ng.h>.#i|
|00002f60| 6e 63 6c 75 64 65 20 3c | 66 63 6e 74 6c 2e 68 3e |nclude <|fcntl.h>|
|00002f70| 0a 23 65 6c 73 65 0a 23 | 69 6e 63 6c 75 64 65 20 |.#else.#|include |
|00002f80| 3c 73 74 72 69 6e 67 73 | 2e 68 3e 0a 23 65 6e 64 |<strings|.h>.#end|
|00002f90| 69 66 0a 23 69 6e 63 6c | 75 64 65 20 3c 73 79 73 |if.#incl|ude <sys|
|00002fa0| 2f 70 61 72 61 6d 2e 68 | 3e 0a 23 69 6e 63 6c 75 |/param.h|>.#inclu|
|00002fb0| 64 65 20 3c 73 79 73 2f | 73 74 61 74 2e 68 3e 0a |de <sys/|stat.h>.|
|00002fc0| 23 69 6e 63 6c 75 64 65 | 20 3c 73 79 73 2f 66 69 |#include| <sys/fi|
|00002fd0| 6c 65 2e 68 3e 0a 0a 23 | 69 66 64 65 66 20 55 53 |le.h>..#|ifdef US|
|00002fe0| 47 0a 23 64 65 66 69 6e | 65 20 52 42 55 46 20 31 |G.#defin|e RBUF 1|
|00002ff0| 30 32 34 0a 63 68 61 72 | 20 2a 63 6f 6d 70 69 6c |024.char| *compil|
|00003000| 65 64 5f 72 65 2c 20 2a | 72 65 67 65 78 28 29 3b |ed_re, *|regex();|
|00003010| 0a 23 65 6c 73 65 0a 23 | 64 65 66 69 6e 65 20 52 |.#else.#|define R|
|00003020| 42 55 46 20 32 30 34 38 | 0a 23 65 6e 64 69 66 0a |BUF 2048|.#endif.|
|00003030| 0a 23 64 65 66 69 6e 65 | 20 4e 4f 5f 46 49 4c 45 |.#define| NO_FILE|
|00003040| 5f 46 4c 41 47 20 2d 31 | 30 0a 0a 69 6e 74 20 72 |_FLAG -1|0..int r|
|00003050| 65 76 5f 66 64 20 3d 20 | 2d 31 3b 0a 69 6e 74 20 |ev_fd = |-1;.int |
|00003060| 73 74 79 20 20 20 20 3d | 20 20 30 3b 0a 69 6e 74 |sty    =|  0;.int|
|00003070| 20 66 66 6c 61 67 20 20 | 3d 20 20 31 3b 0a 65 78 | fflag  |=  1;.ex|
|00003080| 74 65 72 6e 20 69 6e 74 | 20 65 72 72 6e 6f 3b 0a |tern int| errno;.|
|00003090| 69 6e 74 20 65 78 69 74 | 76 61 6c 20 3d 20 31 3b |int exit|val = 1;|
|000030a0| 0a 23 69 66 64 65 66 20 | 55 53 47 0a 23 64 65 66 |.#ifdef |USG.#def|
|000030b0| 69 6e 65 20 49 73 5f 6e | 6f 6e 73 65 65 6b 28 46 |ine Is_n|onseek(F|
|000030c0| 44 2c 53 42 29 20 5c 0a | 20 20 28 20 28 53 42 2e |D,SB) \.|  ( (SB.|
|000030d0| 73 74 5f 6d 6f 64 65 20 | 3d 3d 20 30 29 20 7c 7c |st_mode |== 0) |||
|000030e0| 20 28 53 42 2e 73 74 5f | 6d 6f 64 65 20 26 20 53 | (SB.st_|mode & S|
|000030f0| 5f 49 46 4d 54 20 3d 3d | 20 53 5f 49 46 49 46 4f |_IFMT ==| S_IFIFO|
|00003100| 29 20 7c 7c 20 28 69 73 | 61 74 74 79 28 46 44 29 |) || (is|atty(FD)|
|00003110| 29 20 20 29 0a 23 65 6c | 73 65 0a 23 64 65 66 69 |)  ).#el|se.#defi|
|00003120| 6e 65 20 49 73 5f 6e 6f | 6e 73 65 65 6b 28 46 44 |ne Is_no|nseek(FD|
|00003130| 2c 53 42 29 20 5c 0a 20 | 20 28 20 28 53 42 2e 73 |,SB) \. | ( (SB.s|
|00003140| 74 5f 6d 6f 64 65 20 3d | 3d 20 30 29 20 7c 7c 20 |t_mode =|= 0) || |
|00003150| 28 53 42 2e 73 74 5f 6d | 6f 64 65 20 26 20 53 5f |(SB.st_m|ode & S_|
|00003160| 49 46 4d 54 20 3d 3d 20 | 53 5f 49 46 53 4f 43 4b |IFMT == |S_IFSOCK|
|00003170| 29 20 7c 7c 20 28 69 73 | 61 74 74 79 28 46 44 29 |) || (is|atty(FD)|
|00003180| 29 20 29 0a 23 65 6e 64 | 69 66 20 55 53 47 0a 0a |) ).#end|if USG..|
|00003190| 0a 63 68 61 72 20 64 6f | 6e 74 5f 6d 61 74 63 68 |.char do|nt_match|
|000031a0| 20 3d 20 30 3b 0a 63 68 | 61 72 20 70 72 69 6e 74 | = 0;.ch|ar print|
|000031b0| 5f 63 6f 75 6e 74 3d 20 | 30 3b 0a 63 68 61 72 20 |_count= |0;.char |
|000031c0| 70 72 69 6e 74 5f 6e 61 | 6d 65 73 3d 20 28 63 68 |print_na|mes= (ch|
|000031d0| 61 72 29 20 34 3b 0a 63 | 68 61 72 20 70 72 69 6e |ar) 4;.c|har prin|
|000031e0| 74 5f 62 6c 6f 63 6b 73 | 3d 30 3b 0a 63 68 61 72 |t_blocks|=0;.char|
|000031f0| 20 70 72 69 6e 74 5f 6c | 6e 75 6d 20 3d 20 30 3b | print_l|num = 0;|
|00003200| 0a 63 68 61 72 20 70 72 | 69 6e 74 5f 6d 61 74 63 |.char pr|int_matc|
|00003210| 68 65 73 3d 20 31 3b 0a | 63 68 61 72 20 66 6f 6c |hes= 1;.|char fol|
|00003220| 64 5f 75 70 70 65 72 20 | 3d 20 30 3b 0a 63 68 61 |d_upper |= 0;.cha|
|00003230| 72 20 75 73 65 5f 73 74 | 64 69 6e 20 20 3d 20 31 |r use_st|din  = 1|
|00003240| 3b 0a 63 68 61 72 20 64 | 6f 5f 74 61 69 6c 20 20 |;.char d|o_tail  |
|00003250| 20 20 3d 20 30 3b 0a 63 | 68 61 72 20 73 69 6c 65 |  = 0;.c|har sile|
|00003260| 6e 74 5f 6d 6f 64 65 3d | 20 30 3b 0a 69 6e 74 20 |nt_mode=| 0;.int |
|00003270| 20 74 61 69 6c 5f 63 6e | 74 20 20 20 3d 20 30 3b | tail_cn|t   = 0;|
|00003280| 0a 63 68 61 72 20 2a 74 | 6d 70 5f 6e 61 6d 65 20 |.char *t|mp_name |
|00003290| 20 20 3d 20 4e 55 4c 4c | 3b 0a 0a 20 6d 61 69 6e |  = NULL|;.. main|
|000032a0| 28 61 72 67 63 2c 61 72 | 67 76 29 0a 20 20 20 20 |(argc,ar|gv).    |
|000032b0| 20 69 6e 74 20 61 72 67 | 63 3b 0a 20 20 20 20 20 | int arg|c;.     |
|000032c0| 63 68 61 72 20 2a 61 72 | 67 76 5b 5d 3b 0a 7b 0a |char *ar|gv[];.{.|
|000032d0| 20 20 20 20 63 68 61 72 | 20 2a 73 31 2c 20 2a 73 |    char| *s1, *s|
|000032e0| 32 3b 0a 20 20 20 20 63 | 68 61 72 20 2a 65 78 70 |2;.    c|har *exp|
|000032f0| 72 20 3d 20 4e 55 4c 4c | 3b 0a 20 20 20 20 69 6e |r = NULL|;.    in|
|00003300| 74 20 69 3b 0a 20 20 20 | 20 73 74 72 75 63 74 20 |t i;.   | struct |
|00003310| 73 74 61 74 20 73 62 3b | 0a 0a 20 20 20 20 2f 2a |stat sb;|..    /*|
|00003320| 20 66 69 72 73 74 20 74 | 72 79 20 74 6f 20 70 72 | first t|ry to pr|
|00003330| 6f 63 65 73 73 20 6f 70 | 74 69 6f 6e 73 20 2a 2f |ocess op|tions */|
|00003340| 0a 20 20 20 20 66 6f 72 | 28 73 31 20 3d 20 2a 2b |.    for|(s1 = *+|
|00003350| 2b 61 72 67 76 2c 20 61 | 72 67 63 2d 2d 3b 20 61 |+argv, a|rgc--; a|
|00003360| 72 67 63 20 3e 20 30 20 | 26 26 20 73 31 20 21 3d |rgc > 0 |&& s1 !=|
|00003370| 20 4e 55 4c 4c 3b 20 73 | 31 20 3d 20 2a 2b 2b 61 | NULL; s|1 = *++a|
|00003380| 72 67 76 2c 20 61 72 67 | 63 2d 2d 29 20 7b 0a 09 |rgv, arg|c--) {..|
|00003390| 69 66 20 28 2a 73 31 20 | 21 3d 20 27 2d 27 29 20 |if (*s1 |!= '-') |
|000033a0| 62 72 65 61 6b 3b 0a 09 | 66 6f 72 28 73 32 3d 73 |break;..|for(s2=s|
|000033b0| 31 3b 20 2a 2b 2b 73 32 | 20 21 3d 20 27 5c 30 27 |1; *++s2| != '\0'|
|000033c0| 3b 20 29 20 7b 0a 0a 09 | 20 20 20 20 73 77 69 74 |; ) {...|    swit|
|000033d0| 63 68 20 28 2a 73 32 29 | 20 7b 0a 09 20 20 20 20 |ch (*s2)| {..    |
|000033e0| 20 20 63 61 73 65 20 27 | 76 27 3a 0a 09 09 64 6f |  case '|v':...do|
|000033f0| 6e 74 5f 6d 61 74 63 68 | 2b 2b 3b 0a 09 09 62 72 |nt_match|++;...br|
|00003400| 65 61 6b 3b 0a 09 20 20 | 20 20 20 20 63 61 73 65 |eak;..  |    case|
|00003410| 20 27 63 27 3a 0a 09 09 | 70 72 69 6e 74 5f 63 6f | 'c':...|print_co|
|00003420| 75 6e 74 2b 2b 3b 0a 09 | 09 70 72 69 6e 74 5f 6d |unt++;..|.print_m|
|00003430| 61 74 63 68 65 73 3d 30 | 3b 0a 09 09 62 72 65 61 |atches=0|;...brea|
|00003440| 6b 3b 0a 09 20 20 20 20 | 20 20 63 61 73 65 20 27 |k;..    |  case '|
|00003450| 6e 27 3a 0a 09 09 70 72 | 69 6e 74 5f 6c 6e 75 6d |n':...pr|int_lnum|
|00003460| 20 3d 20 31 3b 0a 09 09 | 62 72 65 61 6b 3b 0a 09 | = 1;...|break;..|
|00003470| 20 20 20 20 20 20 63 61 | 73 65 20 27 6c 27 3a 0a |      ca|se 'l':.|
|00003480| 09 09 70 72 69 6e 74 5f | 6e 61 6d 65 73 20 3d 20 |..print_|names = |
|00003490| 31 3b 0a 09 09 70 72 69 | 6e 74 5f 6d 61 74 63 68 |1;...pri|nt_match|
|000034a0| 65 73 3d 30 3b 0a 09 09 | 62 72 65 61 6b 3b 0a 09 |es=0;...|break;..|
|000034b0| 20 20 20 20 20 20 63 61 | 73 65 20 27 62 27 3a 0a |      ca|se 'b':.|
|000034c0| 09 09 70 72 69 6e 74 5f | 62 6c 6f 63 6b 73 2b 2b |..print_|blocks++|
|000034d0| 3b 0a 09 09 62 72 65 61 | 6b 3b 0a 09 20 20 20 20 |;...brea|k;..    |
|000034e0| 20 20 63 61 73 65 20 27 | 73 27 3a 0a 09 09 70 72 |  case '|s':...pr|
|000034f0| 69 6e 74 5f 6e 61 6d 65 | 73 20 3d 20 30 3b 0a 09 |int_name|s = 0;..|
|00003500| 09 70 72 69 6e 74 5f 6d | 61 74 63 68 65 73 3d 30 |.print_m|atches=0|
|00003510| 3b 0a 09 09 70 72 69 6e | 74 5f 62 6c 6f 63 6b 73 |;...prin|t_blocks|
|00003520| 20 3d 20 30 3b 0a 09 09 | 70 72 69 6e 74 5f 63 6f | = 0;...|print_co|
|00003530| 75 6e 74 20 3d 20 30 3b | 0a 09 09 64 6f 5f 74 61 |unt = 0;|...do_ta|
|00003540| 69 6c 20 20 20 20 20 3d | 20 30 3b 0a 09 09 73 69 |il     =| 0;...si|
|00003550| 6c 65 6e 74 5f 6d 6f 64 | 65 20 3d 20 31 3b 0a 09 |lent_mod|e = 1;..|
|00003560| 09 62 72 65 61 6b 3b 0a | 09 20 20 20 20 20 20 63 |.break;.|.      c|
|00003570| 61 73 65 20 27 68 27 3a | 0a 09 09 70 72 69 6e 74 |ase 'h':|...print|
|00003580| 5f 6e 61 6d 65 73 20 3d | 20 30 3b 0a 09 09 62 72 |_names =| 0;...br|
|00003590| 65 61 6b 3b 0a 09 20 20 | 20 20 20 20 63 61 73 65 |eak;..  |    case|
|000035a0| 20 27 69 27 3a 0a 09 20 | 20 20 20 20 20 63 61 73 | 'i':.. |     cas|
|000035b0| 65 20 27 79 27 3a 0a 09 | 09 66 6f 6c 64 5f 75 70 |e 'y':..|.fold_up|
|000035c0| 70 65 72 20 3d 20 31 3b | 0a 09 09 62 72 65 61 6b |per = 1;|...break|
|000035d0| 3b 0a 09 20 20 20 20 20 | 20 63 61 73 65 20 27 74 |;..     | case 't|
|000035e0| 27 3a 0a 09 09 64 6f 5f | 74 61 69 6c 20 3d 20 31 |':...do_|tail = 1|
|000035f0| 3b 0a 09 09 70 72 69 6e | 74 5f 6d 61 74 63 68 65 |;...prin|t_matche|
|00003600| 73 20 3d 20 30 3b 0a 09 | 09 62 72 65 61 6b 3b 0a |s = 0;..|.break;.|
|00003610| 09 20 20 20 20 20 20 63 | 61 73 65 20 27 65 27 3a |.      c|ase 'e':|
|00003620| 0a 09 09 65 78 70 72 20 | 3d 20 2a 2b 2b 61 72 67 |...expr |= *++arg|
|00003630| 76 3b 0a 09 09 62 72 65 | 61 6b 3b 0a 09 20 20 20 |v;...bre|ak;..   |
|00003640| 20 20 20 64 65 66 61 75 | 6c 74 3a 0a 09 09 69 66 |   defau|lt:...if|
|00003650| 20 28 20 69 73 64 69 67 | 69 74 28 2a 73 32 29 20 | ( isdig|it(*s2) |
|00003660| 29 20 7b 0a 09 09 20 20 | 20 20 64 6f 5f 74 61 69 |) {...  |  do_tai|
|00003670| 6c 20 3d 20 31 3b 0a 09 | 09 20 20 20 20 70 72 69 |l = 1;..|.    pri|
|00003680| 6e 74 5f 6d 61 74 63 68 | 65 73 20 3d 20 30 3b 0a |nt_match|es = 0;.|
|00003690| 09 09 20 20 20 20 74 61 | 69 6c 5f 63 6e 74 20 3d |..    ta|il_cnt =|
|000036a0| 20 61 74 6f 69 28 73 32 | 29 3b 0a 09 09 20 20 20 | atoi(s2|);...   |
|000036b0| 20 66 6f 72 28 20 3b 20 | 2a 73 32 20 21 3d 20 27 | for( ; |*s2 != '|
|000036c0| 5c 30 27 20 3b 20 73 32 | 2b 2b 29 3b 0a 09 09 20 |\0' ; s2|++);... |
|000036d0| 20 20 20 73 32 2d 2d 3b | 0a 09 09 7d 0a 09 09 65 |   s2--;|...}...e|
|000036e0| 6c 73 65 20 7b 0a 09 09 | 20 20 20 20 69 66 20 28 |lse {...|    if (|
|000036f0| 73 69 6c 65 6e 74 5f 6d | 6f 64 65 29 20 65 78 69 |silent_m|ode) exi|
|00003700| 74 28 32 29 3b 0a 09 09 | 20 20 20 20 66 70 72 69 |t(2);...|    fpri|
|00003710| 6e 74 66 28 73 74 64 65 | 72 72 2c 22 72 65 76 67 |ntf(stde|rr,"revg|
|00003720| 72 65 70 3a 20 55 6e 6b | 6e 6f 77 6e 20 66 6c 61 |rep: Unk|nown fla|
|00003730| 67 2c 20 27 25 63 27 2e | 5c 6e 22 2c 2a 73 32 29 |g, '%c'.|\n",*s2)|
|00003740| 3b 0a 09 09 20 20 20 20 | 66 70 72 69 6e 74 66 28 |;...    |fprintf(|
|00003750| 73 74 64 65 72 72 2c 0a | 09 09 20 20 20 20 20 20 |stderr,.|..      |
|00003760| 20 22 20 75 73 61 67 65 | 3a 20 72 65 76 67 72 65 | " usage|: revgre|
|00003770| 70 20 5b 20 2d 73 6c 62 | 63 68 6e 79 65 74 23 20 |p [ -slb|chnyet# |
|00003780| 5d 20 65 78 70 72 20 5b | 20 66 69 6c 65 20 5d 20 |] expr [| file ] |
|00003790| 2e 2e 2e 5c 6e 22 29 3b | 0a 09 09 20 20 20 20 65 |...\n");|...    e|
|000037a0| 78 69 74 28 32 29 3b 0a | 09 09 7d 0a 09 20 20 20 |xit(2);.|..}..   |
|000037b0| 20 7d 0a 09 7d 0a 20 20 | 20 20 7d 0a 0a 20 20 20 | }..}.  |  }..   |
|000037c0| 20 69 66 20 28 73 31 20 | 21 3d 20 4e 55 4c 4c 20 | if (s1 |!= NULL |
|000037d0| 26 26 20 65 78 70 72 20 | 3d 3d 20 4e 55 4c 4c 20 |&& expr |== NULL |
|000037e0| 26 26 20 74 61 69 6c 5f | 63 6e 74 20 3d 3d 20 30 |&& tail_|cnt == 0|
|000037f0| 29 20 7b 0a 09 65 78 70 | 72 20 3d 20 73 31 3b 0a |) {..exp|r = s1;.|
|00003800| 09 61 72 67 76 2b 2b 3b | 20 61 72 67 63 2d 2d 3b |.argv++;| argc--;|
|00003810| 0a 20 20 20 20 7d 0a 20 | 20 20 20 69 66 20 28 65 |.    }. |   if (e|
|00003820| 78 70 72 20 3d 3d 20 4e | 55 4c 4c 20 26 26 20 74 |xpr == N|ULL && t|
|00003830| 61 69 6c 5f 63 6e 74 20 | 3d 3d 20 30 29 20 65 78 |ail_cnt |== 0) ex|
|00003840| 69 74 28 32 29 3b 0a 20 | 20 20 20 69 66 20 28 65 |it(2);. |   if (e|
|00003850| 78 70 72 20 21 3d 20 4e | 55 4c 4c 29 20 7b 0a 23 |xpr != N|ULL) {.#|
|00003860| 69 66 64 65 66 20 55 53 | 47 0a 09 63 68 61 72 20 |ifdef US|G..char |
|00003870| 2a 72 65 67 63 6d 70 28 | 29 3b 0a 09 69 66 20 28 |*regcmp(|);..if (|
|00003880| 20 28 63 6f 6d 70 69 6c | 65 64 5f 72 65 20 3d 20 | (compil|ed_re = |
|00003890| 72 65 67 63 6d 70 28 65 | 78 70 72 2c 4e 55 4c 4c |regcmp(e|xpr,NULL|
|000038a0| 29 29 20 3d 3d 20 4e 55 | 4c 4c 29 20 7b 0a 09 20 |)) == NU|LL) {.. |
|000038b0| 20 20 20 69 66 20 28 20 | 21 20 73 69 6c 65 6e 74 |   if ( |! silent|
|000038c0| 5f 6d 6f 64 65 20 29 20 | 66 70 72 69 6e 74 66 28 |_mode ) |fprintf(|
|000038d0| 73 74 64 65 72 72 2c 22 | 72 65 76 67 72 65 70 3a |stderr,"|revgrep:|
|000038e0| 20 62 61 64 20 65 78 70 | 72 65 73 73 69 6f 6e 2e | bad exp|ression.|
|000038f0| 5c 6e 22 29 3b 0a 09 20 | 20 20 20 65 78 69 74 28 |\n");.. |   exit(|
|00003900| 32 29 3b 0a 09 7d 0a 23 | 65 6c 73 65 0a 09 63 68 |2);..}.#|else..ch|
|00003910| 61 72 20 2a 72 65 5f 63 | 6f 6d 70 28 29 3b 0a 09 |ar *re_c|omp();..|
|00003920| 69 66 20 28 20 28 73 31 | 20 3d 20 72 65 5f 63 6f |if ( (s1| = re_co|
|00003930| 6d 70 28 65 78 70 72 29 | 29 20 21 3d 20 4e 55 4c |mp(expr)|) != NUL|
|00003940| 4c 29 20 7b 0a 09 20 20 | 20 20 69 66 20 28 20 21 |L) {..  |  if ( !|
|00003950| 20 73 69 6c 65 6e 74 5f | 6d 6f 64 65 20 29 20 66 | silent_|mode ) f|
|00003960| 70 72 69 6e 74 66 28 73 | 74 64 65 72 72 2c 22 72 |printf(s|tderr,"r|
|00003970| 65 76 67 72 65 70 3a 20 | 25 73 20 5c 6e 22 2c 73 |evgrep: |%s \n",s|
|00003980| 31 29 3b 0a 09 20 20 20 | 20 65 78 69 74 28 32 29 |1);..   | exit(2)|
|00003990| 3b 0a 09 7d 0a 23 65 6e | 64 69 66 0a 20 20 20 20 |;..}.#en|dif.    |
|000039a0| 7d 0a 0a 20 20 20 20 69 | 66 20 28 70 72 69 6e 74 |}..    i|f (print|
|000039b0| 5f 6e 61 6d 65 73 20 3e | 20 31 20 20 26 26 0a 09 |_names >| 1  &&..|
|000039c0| 28 20 28 2a 61 72 67 76 | 20 3d 3d 20 4e 55 4c 4c |( (*argv| == NULL|
|000039d0| 29 3f 28 31 29 3a 28 2a | 28 61 72 67 76 2b 31 29 |)?(1):(*|(argv+1)|
|000039e0| 20 3d 3d 20 4e 55 4c 4c | 29 29 29 20 70 72 69 6e | == NULL|))) prin|
|000039f0| 74 5f 6e 61 6d 65 73 20 | 3d 20 30 3b 0a 0a 20 20 |t_names |= 0;..  |
|00003a00| 20 20 69 66 20 28 2a 61 | 72 67 76 20 3d 3d 20 4e |  if (*a|rgv == N|
|00003a10| 55 4c 4c 29 20 7b 0a 09 | 72 65 76 5f 66 64 20 3d |ULL) {..|rev_fd =|
|00003a20| 20 30 3b 0a 09 73 74 79 | 20 3d 20 30 3b 0a 09 69 | 0;..sty| = 0;..i|
|00003a30| 66 20 28 20 66 73 74 61 | 74 28 30 2c 26 73 62 29 |f ( fsta|t(0,&sb)|
|00003a40| 20 3e 3d 20 30 20 29 20 | 7b 0a 09 20 20 20 20 69 | >= 0 ) |{..    i|
|00003a50| 66 20 28 20 49 73 5f 6e | 6f 6e 73 65 65 6b 28 30 |f ( Is_n|onseek(0|
|00003a60| 2c 73 62 29 20 29 0a 09 | 20 20 20 20 20 20 7b 0a |,sb) )..|      {.|
|00003a70| 09 09 69 66 20 28 20 20 | 74 6d 70 5f 73 65 74 75 |..if (  |tmp_setu|
|00003a80| 70 28 30 29 20 3c 20 30 | 20 29 20 7b 0a 09 09 20 |p(0) < 0| ) {... |
|00003a90| 20 20 20 69 66 20 28 20 | 21 20 73 69 6c 65 6e 74 |   if ( |! silent|
|00003aa0| 5f 6d 6f 64 65 20 29 20 | 70 65 72 72 6f 72 28 22 |_mode ) |perror("|
|00003ab0| 72 65 76 67 72 65 70 3a | 20 74 6d 70 5f 73 65 74 |revgrep:| tmp_set|
|00003ac0| 75 70 22 29 3b 0a 09 09 | 20 20 20 20 65 78 69 74 |up");...|    exit|
|00003ad0| 28 32 29 3b 0a 09 09 7d | 0a 09 20 20 20 20 20 20 |(2);...}|..      |
|00003ae0| 7d 0a 09 7d 0a 09 65 6c | 73 65 20 7b 0a 09 20 20 |}..}..el|se {..  |
|00003af0| 20 20 65 78 69 74 28 32 | 29 3b 0a 09 7d 0a 20 20 |  exit(2|);..}.  |
|00003b00| 20 20 7d 0a 20 20 20 20 | 69 20 3d 20 72 67 72 65 |  }.    |i = rgre|
|00003b10| 70 28 61 72 67 76 29 3b | 0a 0a 20 20 20 20 69 66 |p(argv);|..    if|
|00003b20| 20 28 20 74 6d 70 5f 6e | 61 6d 65 20 21 3d 20 4e | ( tmp_n|ame != N|
|00003b30| 55 4c 4c 20 29 0a 20 20 | 20 20 20 20 75 6e 6c 69 |ULL ).  |    unli|
|00003b40| 6e 6b 28 74 6d 70 5f 6e | 61 6d 65 29 3b 0a 0a 20 |nk(tmp_n|ame);.. |
|00003b50| 20 20 20 65 78 69 74 28 | 69 29 3b 0a 7d 0a 0a 0a |   exit(|i);.}...|
|00003b60| 2f 2a 20 2a 2a 2a 2a 2a | 2a 2a 2a 2a 2a 2a 2a 2a |/* *****|********|
|00003b70| 2a 2a 2a 2a 2a 2a 2a 2a | 2a 2a 2a 2a 2a 2a 2a 2a |********|********|
|00003b80| 2a 2a 2a 2a 2a 2a 2a 2a | 2a 2a 2a 2a 2a 2a 2a 2a |********|********|
|00003b90| 2a 2a 2a 2a 2a 2a 2a 2a | 2a 2a 2a 2a 2a 2a 2a 2a |********|********|
|00003ba0| 2a 0a 20 2a 20 74 61 69 | 6c 3a 20 70 72 69 6e 74 |*. * tai|l: print|
|00003bb0| 20 61 20 74 61 69 6c 2c | 20 67 69 76 65 6e 20 61 | a tail,| given a|
|00003bc0| 20 66 69 6c 65 20 70 6f | 73 69 74 69 6f 6e 0a 20 | file po|sition. |
|00003bd0| 2a 0a 20 2a 20 20 20 20 | 20 20 20 54 68 69 73 20 |*. *    |   This |
|00003be0| 72 6f 75 74 69 6e 65 20 | 63 6f 70 69 65 73 20 74 |routine |copies t|
|00003bf0| 6f 20 73 74 64 6f 75 74 | 20 61 6c 6c 20 74 68 65 |o stdout| all the|
|00003c00| 20 64 61 74 61 20 61 66 | 74 65 72 20 61 0a 20 2a | data af|ter a. *|
|00003c10| 20 20 20 63 65 72 74 61 | 69 6e 20 66 69 6c 65 20 |   certa|in file |
|00003c20| 70 6f 73 69 74 69 6f 6e | 2e 20 20 49 74 20 63 68 |position|.  It ch|
|00003c30| 65 63 6b 73 20 76 61 72 | 69 6f 75 73 20 67 6c 6f |ecks var|ious glo|
|00003c40| 62 61 6c 20 66 6c 61 67 | 73 0a 20 2a 20 20 20 62 |bal flag|s. *   b|
|00003c50| 65 66 6f 72 65 20 73 74 | 61 72 74 69 6e 67 20 74 |efore st|arting t|
|00003c60| 68 65 20 63 6f 70 79 2c | 20 61 6e 64 20 70 72 69 |he copy,| and pri|
|00003c70| 6e 74 73 20 61 20 6d 65 | 73 73 61 67 65 20 69 66 |nts a me|ssage if|
|00003c80| 0a 20 2a 20 20 20 61 70 | 70 72 6f 70 72 69 61 74 |. *   ap|propriat|
|00003c90| 65 2e 20 20 54 68 65 20 | 66 69 6c 65 20 6f 66 20 |e.  The |file of |
|00003ca0| 77 68 69 63 68 20 61 20 | 74 61 69 6c 20 69 73 20 |which a |tail is |
|00003cb0| 74 6f 20 62 65 20 64 6f | 6e 65 0a 20 2a 20 20 20 |to be do|ne. *   |
|00003cc0| 69 73 20 61 73 73 75 6d | 65 64 20 74 6f 20 62 65 |is assum|ed to be|
|00003cd0| 20 6f 70 65 6e 20 6f 6e | 20 72 65 76 5f 66 64 2e | open on| rev_fd.|
|00003ce0| 0a 20 2a 2f 0a 20 74 61 | 69 6c 28 66 70 6f 73 2c |. */. ta|il(fpos,|
|00003cf0| 66 6e 61 6d 65 29 0a 20 | 20 20 20 20 69 6e 74 20 |fname). |    int |
|00003d00| 66 70 6f 73 3b 0a 20 20 | 20 20 20 63 68 61 72 20 |fpos;.  |   char |
|00003d10| 2a 66 6e 61 6d 65 3b 0a | 7b 0a 20 20 20 20 69 6e |*fname;.|{.    in|
|00003d20| 74 20 6c 65 6e 3b 0a 20 | 20 20 20 63 68 61 72 20 |t len;. |   char |
|00003d30| 62 75 66 5b 52 42 55 46 | 5d 3b 0a 0a 20 20 20 20 |buf[RBUF|];..    |
|00003d40| 69 66 20 28 70 72 69 6e | 74 5f 6e 61 6d 65 73 29 |if (prin|t_names)|
|00003d50| 20 70 72 69 6e 74 66 28 | 22 25 73 3a 22 2c 66 6e | printf(|"%s:",fn|
|00003d60| 61 6d 65 29 3b 0a 20 20 | 20 20 69 66 20 28 70 72 |ame);.  |  if (pr|
|00003d70| 69 6e 74 5f 62 6c 6f 63 | 6b 73 29 20 70 72 69 6e |int_bloc|ks) prin|
|00003d80| 74 66 28 22 73 74 61 72 | 74 69 6e 67 20 69 6e 20 |tf("star|ting in |
|00003d90| 25 64 22 2c 66 70 6f 73 | 2f 35 31 32 29 3b 0a 20 |%d",fpos|/512);. |
|00003da0| 20 20 20 69 66 20 28 70 | 72 69 6e 74 5f 6e 61 6d |   if (p|rint_nam|
|00003db0| 65 73 20 7c 7c 20 70 72 | 69 6e 74 5f 62 6c 6f 63 |es || pr|int_bloc|
|00003dc0| 6b 73 29 20 70 75 74 63 | 68 61 72 28 27 5c 6e 27 |ks) putc|har('\n'|
|00003dd0| 29 3b 0a 0a 20 20 20 20 | 69 66 20 28 6c 73 65 65 |);..    |if (lsee|
|00003de0| 6b 28 72 65 76 5f 66 64 | 2c 28 66 70 6f 73 3d 3d |k(rev_fd|,(fpos==|
|00003df0| 30 29 3f 28 30 29 3a 28 | 66 70 6f 73 2b 31 29 2c |0)?(0):(|fpos+1),|
|00003e00| 30 29 20 3c 20 30 29 20 | 7b 0a 09 70 65 72 72 6f |0) < 0) |{..perro|
|00003e10| 72 28 22 72 65 76 67 72 | 65 70 3a 20 74 61 69 6c |r("revgr|ep: tail|
|00003e20| 22 29 3b 0a 09 72 65 74 | 75 72 6e 28 2d 31 29 3b |");..ret|urn(-1);|
|00003e30| 0a 20 20 20 20 7d 0a 20 | 20 20 20 77 68 69 6c 65 |.    }. |   while|
|00003e40| 28 20 28 6c 65 6e 3d 72 | 65 61 64 28 72 65 76 5f |( (len=r|ead(rev_|
|00003e50| 66 64 2c 62 75 66 2c 52 | 42 55 46 29 29 20 3e 20 |fd,buf,R|BUF)) > |
|00003e60| 30 29 0a 09 66 77 72 69 | 74 65 28 62 75 66 2c 73 |0)..fwri|te(buf,s|
|00003e70| 69 7a 65 6f 66 28 63 68 | 61 72 29 2c 6c 65 6e 2c |izeof(ch|ar),len,|
|00003e80| 73 74 64 6f 75 74 29 3b | 0a 0a 20 20 20 20 72 65 |stdout);|..    re|
|00003e90| 74 75 72 6e 28 30 29 3b | 0a 7d 0a 0a 0a 0a 2f 2a |turn(0);|.}..../*|
|00003ea0| 20 2a 2a 2a 2a 2a 2a 2a | 2a 2a 2a 2a 2a 2a 2a 2a | *******|********|
|00003eb0| 2a 2a 2a 2a 2a 2a 2a 2a | 2a 2a 2a 2a 2a 2a 2a 2a |********|********|
|00003ec0| 2a 2a 2a 2a 2a 2a 2a 2a | 2a 2a 2a 2a 2a 2a 2a 2a |********|********|
|00003ed0| 2a 2a 2a 2a 2a 2a 2a 2a | 2a 2a 2a 2a 2a 2a 2a 0a |********|*******.|
|00003ee0| 20 2a 20 72 67 72 65 70 | 3a 20 62 61 63 6b 77 61 | * rgrep|: backwa|
|00003ef0| 72 64 73 20 67 72 65 70 | 20 61 20 73 65 74 20 6f |rds grep| a set o|
|00003f00| 66 20 66 69 6c 65 73 2c | 20 6f 72 20 73 74 64 69 |f files,| or stdi|
|00003f10| 6e 0a 20 2a 0a 20 2a 20 | 20 20 20 20 20 52 67 72 |n. *. * |     Rgr|
|00003f20| 65 70 20 70 65 72 66 6f | 72 6d 73 20 61 20 62 61 |ep perfo|rms a ba|
|00003f30| 63 6b 77 61 72 64 73 20 | 67 72 65 70 20 6f 6e 20 |ckwards |grep on |
|00003f40| 61 6e 20 69 6e 70 75 74 | 20 76 65 63 74 6f 72 0a |an input| vector.|
|00003f50| 20 2a 20 20 20 6f 66 20 | 66 69 6c 65 73 2e 20 20 | *   of |files.  |
|00003f60| 49 66 20 74 68 65 20 69 | 6e 70 75 74 20 76 65 63 |If the i|nput vec|
|00003f70| 74 6f 72 20 69 73 20 4e | 75 6c 6c 2c 20 74 68 65 |tor is N|ull, the|
|00003f80| 6e 20 74 68 65 20 73 74 | 64 69 6e 0a 20 2a 20 20 |n the st|din. *  |
|00003f90| 20 69 73 20 61 73 73 75 | 6d 65 64 20 74 6f 20 62 | is assu|med to b|
|00003fa0| 65 20 74 68 65 20 69 6e | 70 75 74 20 66 69 6c 65 |e the in|put file|
|00003fb0| 2e 0a 20 2a 20 20 20 54 | 68 69 73 20 72 6f 75 74 |.. *   T|his rout|
|00003fc0| 69 6e 65 20 75 73 65 73 | 20 72 6c 69 6e 65 28 29 |ine uses| rline()|
|00003fd0| 20 74 6f 20 67 65 74 20 | 74 68 65 20 6e 65 78 74 | to get |the next|
|00003fe0| 20 6c 69 6e 65 20 62 61 | 63 6b 77 61 72 64 73 2c | line ba|ckwards,|
|00003ff0| 0a 20 2a 20 20 20 61 6e | 64 20 75 73 65 73 20 64 |. *   an|d uses d|
|00004000| 6f 6c 69 6e 65 28 29 20 | 74 6f 20 64 6f 20 70 61 |oline() |to do pa|
|00004010| 74 74 65 72 6e 2d 6d 61 | 74 63 68 69 6e 67 20 61 |ttern-ma|tching a|
|00004020| 6e 64 20 6f 75 74 70 75 | 74 20 6f 6e 0a 20 2a 20 |nd outpu|t on. * |
|00004030| 20 20 74 68 65 20 6c 69 | 6e 65 20 72 65 63 65 69 |  the li|ne recei|
|00004040| 76 65 64 2e 0a 20 2a 2f | 0a 20 72 67 72 65 70 28 |ved.. */|. rgrep(|
|00004050| 66 69 6c 65 73 29 0a 20 | 20 20 20 20 63 68 61 72 |files). |    char|
|00004060| 20 2a 66 69 6c 65 73 5b | 5d 3b 0a 7b 0a 20 20 20 | *files[|];.{.   |
|00004070| 20 63 68 61 72 20 2a 73 | 31 2c 20 2a 73 32 3b 0a | char *s|1, *s2;.|
|00004080| 20 20 20 20 63 68 61 72 | 20 2a 6c 62 75 66 3b 0a |    char| *lbuf;.|
|00004090| 20 20 20 20 69 6e 74 20 | 20 70 6f 73 2c 20 6c 63 |    int | pos, lc|
|000040a0| 6e 74 2c 20 6d 61 74 63 | 68 2c 20 6d 61 74 63 68 |nt, matc|h, match|
|000040b0| 5f 63 6e 74 3b 0a 20 20 | 20 20 63 68 61 72 20 64 |_cnt;.  |  char d|
|000040c0| 69 64 6f 6e 65 20 3d 20 | 30 3b 0a 0a 20 20 20 20 |idone = |0;..    |
|000040d0| 66 6f 72 28 64 69 64 6f | 6e 65 20 3d 20 30 3b 0a |for(dido|ne = 0;.|
|000040e0| 09 64 69 64 6f 6e 65 20 | 3d 3d 20 30 20 7c 7c 20 |.didone |== 0 || |
|000040f0| 2a 66 69 6c 65 73 20 21 | 3d 20 4e 55 4c 4c 3b 0a |*files !|= NULL;.|
|00004100| 09 66 69 6c 65 73 20 2b | 3d 20 28 28 2a 66 69 6c |.files +|= ((*fil|
|00004110| 65 73 3d 3d 4e 55 4c 4c | 29 3f 30 3a 31 29 29 0a |es==NULL|)?0:1)).|
|00004120| 20 20 20 20 7b 0a 09 63 | 68 61 72 20 2a 66 2c 20 |    {..c|har *f, |
|00004130| 2a 72 6c 69 6e 65 28 29 | 3b 0a 09 66 20 3d 20 2a |*rline()|;..f = *|
|00004140| 66 69 6c 65 73 3b 0a 09 | 66 6f 72 28 6c 63 6e 74 |files;..|for(lcnt|
|00004150| 3d 30 2c 20 6d 61 74 63 | 68 5f 63 6e 74 3d 30 2c |=0, matc|h_cnt=0,|
|00004160| 20 64 69 64 6f 6e 65 20 | 3d 20 31 3b 0a 09 20 20 | didone |= 1;..  |
|00004170| 20 20 28 20 6c 62 75 66 | 20 3d 20 72 6c 69 6e 65 |  ( lbuf| = rline|
|00004180| 28 26 70 6f 73 2c 66 29 | 20 29 20 21 3d 20 4e 55 |(&pos,f)| ) != NU|
|00004190| 4c 4c 3b 0a 09 20 20 20 | 20 66 3d 4e 55 4c 4c 2c |LL;..   | f=NULL,|
|000041a0| 20 6c 63 6e 74 2b 2b 29 | 0a 09 20 20 7b 0a 09 20 | lcnt++)|..  {.. |
|000041b0| 20 20 20 20 20 69 66 20 | 28 6d 61 74 63 68 20 3d |     if |(match =|
|000041c0| 20 64 6f 6c 69 6e 65 28 | 6c 62 75 66 2c 70 6f 73 | doline(|lbuf,pos|
|000041d0| 2c 6c 63 6e 74 2c 2a 66 | 69 6c 65 73 29 29 20 7b |,lcnt,*f|iles)) {|
|000041e0| 0a 09 09 20 20 6d 61 74 | 63 68 5f 63 6e 74 2b 2b |...  mat|ch_cnt++|
|000041f0| 3b 0a 09 09 20 20 65 78 | 69 74 76 61 6c 3d 30 3b |;...  ex|itval=0;|
|00004200| 0a 09 09 20 20 69 66 20 | 28 64 6f 5f 74 61 69 6c |...  if |(do_tail|
|00004210| 29 20 7b 0a 09 09 20 20 | 20 20 20 20 74 61 69 6c |) {...  |    tail|
|00004220| 28 70 6f 73 2c 2a 66 69 | 6c 65 73 29 3b 0a 09 09 |(pos,*fi|les);...|
|00004230| 20 20 20 20 20 20 64 69 | 64 6f 6e 65 20 3d 20 31 |      di|done = 1|
|00004240| 3b 0a 09 09 20 20 20 20 | 20 20 62 72 65 61 6b 3b |;...    |  break;|
|00004250| 0a 09 09 20 20 7d 0a 09 | 09 20 20 69 66 20 28 70 |...  }..|.  if (p|
|00004260| 72 69 6e 74 5f 6e 61 6d | 65 73 20 26 26 20 70 72 |rint_nam|es && pr|
|00004270| 69 6e 74 5f 6d 61 74 63 | 68 65 73 20 3d 3d 20 30 |int_matc|hes == 0|
|00004280| 20 26 26 20 70 72 69 6e | 74 5f 63 6f 75 6e 74 20 | && prin|t_count |
|00004290| 3d 3d 20 30 29 20 7b 0a | 09 09 20 20 20 20 20 20 |== 0) {.|..      |
|000042a0| 70 72 69 6e 74 66 28 22 | 25 73 5c 6e 22 2c 2a 66 |printf("|%s\n",*f|
|000042b0| 69 6c 65 73 29 3b 0a 09 | 09 20 20 20 20 20 20 62 |iles);..|.      b|
|000042c0| 72 65 61 6b 3b 0a 09 09 | 20 20 7d 0a 09 20 20 20 |reak;...|  }..   |
|000042d0| 20 20 20 7d 0a 09 20 20 | 7d 0a 09 69 66 20 28 70 |   }..  |}..if (p|
|000042e0| 72 69 6e 74 5f 63 6f 75 | 6e 74 29 20 7b 0a 09 20 |rint_cou|nt) {.. |
|000042f0| 20 20 20 69 66 20 28 70 | 72 69 6e 74 5f 6e 61 6d |   if (p|rint_nam|
|00004300| 65 73 29 20 70 72 69 6e | 74 66 28 22 25 73 3a 25 |es) prin|tf("%s:%|
|00004310| 64 5c 6e 22 2c 2a 66 69 | 6c 65 73 2c 6d 61 74 63 |d\n",*fi|les,matc|
|00004320| 68 5f 63 6e 74 29 3b 0a | 09 20 20 20 20 65 6c 73 |h_cnt);.|.    els|
|00004330| 65 20 70 72 69 6e 74 66 | 28 22 25 64 5c 6e 22 2c |e printf|("%d\n",|
|00004340| 6d 61 74 63 68 5f 63 6e | 74 29 3b 0a 09 7d 0a 20 |match_cn|t);..}. |
|00004350| 20 20 20 7d 0a 20 20 20 | 20 72 65 74 75 72 6e 28 |   }.   | return(|
|00004360| 65 78 69 74 76 61 6c 29 | 3b 0a 7d 0a 0a 2f 2a 20 |exitval)|;.}../* |
|00004370| 2a 2a 2a 2a 2a 2a 2a 2a | 2a 2a 2a 2a 2a 2a 2a 2a |********|********|
|00004380| 2a 2a 2a 2a 2a 2a 2a 2a | 2a 2a 2a 2a 2a 2a 2a 2a |********|********|
|00004390| 2a 2a 2a 2a 2a 2a 2a 2a | 2a 2a 2a 2a 2a 2a 2a 2a |********|********|
|000043a0| 2a 2a 2a 2a 2a 2a 2a 2a | 2a 2a 2a 2a 2a 2a 0a 20 |********|******. |
|000043b0| 2a 20 64 6f 6c 69 6e 65 | 3a 20 6d 61 74 63 68 20 |* doline|: match |
|000043c0| 61 6e 64 20 68 61 6e 64 | 6c 65 20 61 20 73 69 6e |and hand|le a sin|
|000043d0| 67 6c 65 20 6c 69 6e 65 | 20 6f 66 20 69 6e 70 75 |gle line| of inpu|
|000043e0| 74 0a 20 2a 0a 20 2a 20 | 20 20 20 20 20 20 54 68 |t. *. * |      Th|
|000043f0| 69 73 20 6c 69 6e 65 20 | 72 65 63 65 69 76 65 73 |is line |receives|
|00004400| 20 61 20 73 69 6e 67 6c | 65 20 74 65 78 74 20 6c | a singl|e text l|
|00004410| 69 6e 65 2c 20 61 6e 64 | 20 70 65 72 66 6f 72 6d |ine, and| perform|
|00004420| 73 0a 20 2a 20 20 20 20 | 70 61 74 74 65 72 6e 20 |s. *    |pattern |
|00004430| 6d 61 74 63 68 65 73 20 | 6f 6e 20 69 74 20 69 66 |matches |on it if|
|00004440| 20 6e 65 63 65 73 73 61 | 72 79 2e 20 20 44 65 70 | necessa|ry.  Dep|
|00004450| 65 6e 64 69 6e 67 20 6f | 6e 20 74 68 65 0a 20 2a |ending o|n the. *|
|00004460| 20 20 20 20 76 61 72 69 | 6f 75 73 20 6f 70 74 69 |    vari|ous opti|
|00004470| 6f 6e 73 2c 20 74 68 65 | 20 6c 69 6e 65 20 6d 61 |ons, the| line ma|
|00004480| 79 20 62 65 20 6f 75 74 | 70 75 74 20 77 69 74 68 |y be out|put with|
|00004490| 20 61 20 6d 65 73 73 61 | 67 65 0a 20 2a 20 20 20 | a messa|ge. *   |
|000044a0| 20 74 77 6f 2e 0a 20 2a | 20 20 20 20 20 20 20 57 | two.. *|       W|
|000044b0| 68 65 6e 20 61 20 6d 61 | 74 63 68 20 6f 66 20 61 |hen a ma|tch of a|
|000044c0| 6e 79 20 6b 69 6e 64 20 | 6f 63 63 75 72 73 2c 20 |ny kind |occurs, |
|000044d0| 31 20 69 73 20 72 65 74 | 75 72 6e 65 64 2e 0a 20 |1 is ret|urned.. |
|000044e0| 2a 20 20 20 20 4f 74 68 | 65 72 77 69 73 65 20 30 |*    Oth|erwise 0|
|000044f0| 20 69 73 20 72 65 74 75 | 72 6e 65 64 2e 0a 20 2a | is retu|rned.. *|
|00004500| 2f 0a 20 64 6f 6c 69 6e | 65 28 6c 62 75 66 2c 70 |/. dolin|e(lbuf,p|
|00004510| 6f 73 2c 6c 69 6e 2c 66 | 6e 61 6d 65 29 0a 20 20 |os,lin,f|name).  |
|00004520| 20 20 20 63 68 61 72 20 | 2a 6c 62 75 66 3b 0a 20 |   char |*lbuf;. |
|00004530| 20 20 20 20 69 6e 74 20 | 70 6f 73 2c 20 6c 69 6e |    int |pos, lin|
|00004540| 3b 0a 20 20 20 20 20 63 | 68 61 72 20 2a 66 6e 61 |;.     c|har *fna|
|00004550| 6d 65 3b 0a 7b 0a 20 20 | 20 20 72 65 67 69 73 74 |me;.{.  |  regist|
|00004560| 65 72 20 63 68 61 72 20 | 2a 73 31 2c 20 2a 73 32 |er char |*s1, *s2|
|00004570| 3b 0a 20 20 20 20 69 6e | 74 20 69 2c 6a 2c 6d 3b |;.    in|t i,j,m;|
|00004580| 0a 0a 20 20 20 20 69 66 | 20 28 74 61 69 6c 5f 63 |..    if| (tail_c|
|00004590| 6e 74 20 3e 20 30 29 20 | 7b 0a 09 20 20 20 20 69 |nt > 0) |{..    i|
|000045a0| 66 20 28 6c 69 6e 20 3e | 3d 20 74 61 69 6c 5f 63 |f (lin >|= tail_c|
|000045b0| 6e 74 20 7c 7c 20 70 6f | 73 20 3c 3d 20 31 29 20 |nt || po|s <= 1) |
|000045c0| 72 65 74 75 72 6e 28 31 | 29 3b 0a 09 20 20 20 20 |return(1|);..    |
|000045d0| 65 6c 73 65 20 72 65 74 | 75 72 6e 28 30 29 3b 0a |else ret|urn(0);.|
|000045e0| 20 20 20 20 7d 0a 0a 20 | 20 20 20 69 66 20 28 66 |    }.. |   if (f|
|000045f0| 6f 6c 64 5f 75 70 70 65 | 72 29 20 7b 0a 09 20 20 |old_uppe|r) {..  |
|00004600| 20 20 63 68 61 72 20 63 | 6d 70 62 75 66 5b 52 42 |  char c|mpbuf[RB|
|00004610| 55 46 2a 32 5d 3b 0a 09 | 20 20 20 20 66 6f 72 28 |UF*2];..|    for(|
|00004620| 73 31 3d 6c 62 75 66 2c | 20 73 32 3d 63 6d 70 62 |s1=lbuf,| s2=cmpb|
|00004630| 75 66 3b 0a 09 09 2a 73 | 31 20 21 3d 20 27 5c 30 |uf;...*s|1 != '\0|
|00004640| 27 20 26 26 20 28 73 32 | 2d 63 6d 70 62 75 66 29 |' && (s2|-cmpbuf)|
|00004650| 20 3c 20 28 52 42 55 46 | 2a 32 29 3b 20 73 31 2b | < (RBUF|*2); s1+|
|00004660| 2b 2c 20 73 32 2b 2b 20 | 29 0a 09 20 20 20 20 20 |+, s2++ |)..     |
|00004670| 20 2a 73 32 20 3d 20 28 | 69 73 75 70 70 65 72 28 | *s2 = (|isupper(|
|00004680| 2a 73 31 29 29 3f 28 74 | 6f 6c 6f 77 65 72 28 2a |*s1))?(t|olower(*|
|00004690| 73 31 29 29 3a 28 2a 73 | 31 29 3b 0a 09 20 20 20 |s1)):(*s|1);..   |
|000046a0| 20 2a 73 32 20 3d 20 27 | 5c 30 27 3b 0a 09 20 20 | *s2 = '|\0';..  |
|000046b0| 20 20 73 31 20 3d 20 63 | 6d 70 62 75 66 3b 0a 20 |  s1 = c|mpbuf;. |
|000046c0| 20 20 20 7d 0a 20 20 20 | 20 65 6c 73 65 20 20 73 |   }.   | else  s|
|000046d0| 31 20 3d 20 6c 62 75 66 | 3b 0a 0a 23 69 66 64 65 |1 = lbuf|;..#ifde|
|000046e0| 66 20 55 53 47 0a 20 20 | 20 20 6d 20 3d 20 28 72 |f USG.  |  m = (r|
|000046f0| 65 67 65 78 28 63 6f 6d | 70 69 6c 65 64 5f 72 65 |egex(com|piled_re|
|00004700| 2c 73 31 29 3d 3d 4e 55 | 4c 4c 29 3f 28 30 29 3a |,s1)==NU|LL)?(0):|
|00004710| 28 31 29 3b 0a 23 65 6c | 73 65 0a 20 20 20 20 6d |(1);.#el|se.    m|
|00004720| 20 3d 20 72 65 5f 65 78 | 65 63 28 73 31 29 3b 0a | = re_ex|ec(s1);.|
|00004730| 23 65 6e 64 69 66 0a 0a | 20 20 20 20 6d 20 3d 20 |#endif..|    m = |
|00004740| 28 64 6f 6e 74 5f 6d 61 | 74 63 68 29 3f 28 21 20 |(dont_ma|tch)?(! |
|00004750| 6d 29 3a 28 6d 29 3b 0a | 20 20 20 20 69 66 20 28 |m):(m);.|    if (|
|00004760| 21 20 6d 29 20 72 65 74 | 75 72 6e 28 30 29 3b 0a |! m) ret|urn(0);.|
|00004770| 0a 20 20 20 20 69 66 20 | 28 70 72 69 6e 74 5f 6d |.    if |(print_m|
|00004780| 61 74 63 68 65 73 29 20 | 7b 0a 09 69 66 20 28 70 |atches) |{..if (p|
|00004790| 72 69 6e 74 5f 6e 61 6d | 65 73 29 20 70 72 69 6e |rint_nam|es) prin|
|000047a0| 74 66 28 22 25 73 3a 22 | 2c 66 6e 61 6d 65 29 3b |tf("%s:"|,fname);|
|000047b0| 0a 09 69 66 20 28 70 72 | 69 6e 74 5f 6c 6e 75 6d |..if (pr|int_lnum|
|000047c0| 29 20 70 72 69 6e 74 66 | 28 22 2d 25 64 3a 22 2c |) printf|("-%d:",|
|000047d0| 6c 69 6e 29 3b 0a 09 69 | 66 20 28 70 72 69 6e 74 |lin);..i|f (print|
|000047e0| 5f 62 6c 6f 63 6b 73 29 | 20 70 72 69 6e 74 66 28 |_blocks)| printf(|
|000047f0| 22 25 64 3a 22 2c 70 6f | 73 2f 35 31 32 29 3b 0a |"%d:",po|s/512);.|
|00004800| 09 70 72 69 6e 74 66 28 | 22 25 73 5c 6e 22 2c 6c |.printf(|"%s\n",l|
|00004810| 62 75 66 29 3b 0a 20 20 | 20 20 7d 0a 20 20 20 20 |buf);.  |  }.    |
|00004820| 72 65 74 75 72 6e 28 31 | 29 3b 0a 7d 0a 0a 0a 2f |return(1|);.}.../|
|00004830| 2a 20 2a 2a 2a 2a 2a 2a | 2a 2a 2a 2a 2a 2a 2a 2a |* ******|********|
|00004840| 2a 2a 2a 2a 2a 2a 2a 2a | 2a 2a 2a 2a 2a 2a 2a 2a |********|********|
|00004850| 2a 2a 2a 2a 2a 2a 2a 2a | 2a 2a 2a 2a 2a 2a 2a 2a |********|********|
|00004860| 2a 2a 2a 2a 2a 2a 2a 2a | 2a 2a 2a 2a 2a 2a 2a 2a |********|********|
|00004870| 0a 20 2a 20 74 6d 70 5f | 73 65 74 75 70 3a 20 72 |. * tmp_|setup: r|
|00004880| 65 61 64 20 61 20 6e 6f | 6e 2d 73 65 65 6b 61 62 |ead a no|n-seekab|
|00004890| 6c 65 20 63 68 61 6e 6e | 65 6c 20 69 6e 74 6f 20 |le chann|el into |
|000048a0| 61 20 74 65 6d 70 20 66 | 69 6c 65 0a 20 2a 0a 20 |a temp f|ile. *. |
|000048b0| 2a 20 20 20 20 20 20 20 | 54 68 69 73 20 72 6f 75 |*       |This rou|
|000048c0| 74 69 6e 65 20 72 65 61 | 64 73 20 74 68 65 20 63 |tine rea|ds the c|
|000048d0| 6f 6e 74 65 6e 74 73 20 | 6f 66 20 61 20 66 69 6c |ontents |of a fil|
|000048e0| 65 20 64 65 73 63 72 69 | 70 74 6f 72 0a 20 2a 20 |e descri|ptor. * |
|000048f0| 20 69 6e 74 6f 20 61 20 | 74 65 6d 70 6f 72 61 72 | into a |temporar|
|00004900| 79 20 66 69 6c 65 2c 20 | 61 6e 64 20 74 68 65 6e |y file, |and then|
|00004910| 20 70 61 73 73 65 73 20 | 62 61 63 6b 20 74 68 65 | passes |back the|
|00004920| 20 6e 61 6d 65 20 6f 66 | 20 74 68 65 0a 20 2a 20 | name of| the. * |
|00004930| 20 66 69 6c 65 20 69 6e | 20 61 20 4e 55 4c 4c 2d | file in| a NULL-|
|00004940| 74 65 72 6d 69 6e 61 74 | 65 64 20 76 65 63 74 6f |terminat|ed vecto|
|00004950| 72 2e 0a 20 2a 0a 20 2a | 20 20 20 20 20 20 20 41 |r.. *. *|       A|
|00004960| 20 73 69 67 6e 61 6c 20 | 63 61 74 63 68 65 72 20 | signal |catcher |
|00004970| 69 73 20 73 65 74 20 75 | 70 20 74 6f 20 64 65 6c |is set u|p to del|
|00004980| 65 74 65 20 74 68 65 20 | 66 69 6c 65 20 69 66 0a |ete the |file if.|
|00004990| 20 2a 20 20 74 68 65 20 | 75 73 65 72 20 68 69 74 | *  the |user hit|
|000049a0| 73 20 5e 43 20 6f 72 20 | 5e 5c 0a 20 2a 2f 0a 20 |s ^C or |^\. */. |
|000049b0| 74 6d 70 5f 73 65 74 75 | 70 28 69 66 64 29 0a 20 |tmp_setu|p(ifd). |
|000049c0| 20 20 20 20 69 6e 74 20 | 69 66 64 3b 0a 7b 0a 20 |    int |ifd;.{. |
|000049d0| 20 20 20 73 74 61 74 69 | 63 20 63 68 61 72 20 6e |   stati|c char n|
|000049e0| 61 6d 62 75 66 5b 36 30 | 5d 3b 0a 20 20 20 20 69 |ambuf[60|];.    i|
|000049f0| 6e 74 20 6f 66 64 2c 20 | 6c 65 6e 3b 0a 20 20 20 |nt ofd, |len;.   |
|00004a00| 20 69 6e 74 20 73 69 67 | 5f 65 78 69 74 28 29 3b | int sig|_exit();|
|00004a10| 0a 20 20 20 20 63 68 61 | 72 20 64 62 75 66 5b 52 |.    cha|r dbuf[R|
|00004a20| 42 55 46 5d 3b 0a 0a 20 | 20 20 20 73 70 72 69 6e |BUF];.. |   sprin|
|00004a30| 74 66 28 6e 61 6d 62 75 | 66 2c 22 2f 74 6d 70 2f |tf(nambu|f,"/tmp/|
|00004a40| 72 76 67 2e 61 25 64 22 | 2c 67 65 74 70 69 64 28 |rvg.a%d"|,getpid(|
|00004a50| 29 29 3b 0a 20 20 20 20 | 69 66 20 28 20 28 6f 66 |));.    |if ( (of|
|00004a60| 64 20 3d 20 6f 70 65 6e | 28 6e 61 6d 62 75 66 2c |d = open|(nambuf,|
|00004a70| 4f 5f 52 44 57 52 20 7c | 20 4f 5f 43 52 45 41 54 |O_RDWR || O_CREAT|
|00004a80| 2c 30 36 30 30 29 29 20 | 3c 20 30 29 20 72 65 74 |,0600)) |< 0) ret|
|00004a90| 75 72 6e 28 2d 31 29 3b | 0a 0a 20 20 20 20 69 66 |urn(-1);|..    if|
|00004aa0| 20 28 20 73 69 67 6e 61 | 6c 28 53 49 47 49 4e 54 | ( signa|l(SIGINT|
|00004ab0| 2c 73 69 67 5f 65 78 69 | 74 29 20 3d 3d 20 53 49 |,sig_exi|t) == SI|
|00004ac0| 47 5f 49 47 4e 29 20 73 | 69 67 6e 61 6c 28 53 49 |G_IGN) s|ignal(SI|
|00004ad0| 47 49 4e 54 2c 53 49 47 | 5f 49 47 4e 29 3b 0a 20 |GINT,SIG|_IGN);. |
|00004ae0| 20 20 20 69 66 20 28 20 | 73 69 67 6e 61 6c 28 53 |   if ( |signal(S|
|00004af0| 49 47 51 55 49 54 2c 73 | 69 67 5f 65 78 69 74 29 |IGQUIT,s|ig_exit)|
|00004b00| 20 3d 3d 20 53 49 47 5f | 49 47 4e 29 20 73 69 67 | == SIG_|IGN) sig|
|00004b10| 6e 61 6c 28 53 49 47 51 | 55 49 54 2c 53 49 47 5f |nal(SIGQ|UIT,SIG_|
|00004b20| 49 47 4e 29 3b 0a 20 20 | 20 20 69 66 20 28 20 73 |IGN);.  |  if ( s|
|00004b30| 69 67 6e 61 6c 28 53 49 | 47 48 55 50 2c 73 69 67 |ignal(SI|GHUP,sig|
|00004b40| 5f 65 78 69 74 29 20 3d | 3d 20 53 49 47 5f 49 47 |_exit) =|= SIG_IG|
|00004b50| 4e 29 20 73 69 67 6e 61 | 6c 28 53 49 47 48 55 50 |N) signa|l(SIGHUP|
|00004b60| 2c 53 49 47 5f 49 47 4e | 29 3b 0a 0a 20 20 20 20 |,SIG_IGN|);..    |
|00004b70| 66 6f 72 28 20 3b 20 28 | 6c 65 6e 20 3d 20 72 65 |for( ; (|len = re|
|00004b80| 61 64 28 69 66 64 2c 64 | 62 75 66 2c 52 42 55 46 |ad(ifd,d|buf,RBUF|
|00004b90| 29 29 20 3e 20 30 3b 20 | 77 72 69 74 65 28 6f 66 |)) > 0; |write(of|
|00004ba0| 64 2c 64 62 75 66 2c 6c | 65 6e 29 29 3b 0a 20 20 |d,dbuf,l|en));.  |
|00004bb0| 20 20 74 6d 70 5f 6e 61 | 6d 65 20 3d 20 6e 61 6d |  tmp_na|me = nam|
|00004bc0| 62 75 66 3b 0a 20 20 20 | 20 72 65 76 5f 66 64 20 |buf;.   | rev_fd |
|00004bd0| 3d 20 6f 66 64 3b 0a 20 | 20 20 20 72 65 74 75 72 |= ofd;. |   retur|
|00004be0| 6e 20 28 6f 66 64 29 3b | 0a 7d 0a 0a 73 69 67 5f |n (ofd);|.}..sig_|
|00004bf0| 65 78 69 74 28 29 0a 7b | 0a 20 20 20 20 63 6c 6f |exit().{|.    clo|
|00004c00| 73 65 28 30 29 3b 20 63 | 6c 6f 73 65 28 31 29 3b |se(0); c|lose(1);|
|00004c10| 20 63 6c 6f 73 65 28 32 | 29 3b 20 63 6c 6f 73 65 | close(2|); close|
|00004c20| 28 33 29 3b 20 63 6c 6f | 73 65 28 34 29 3b 20 63 |(3); clo|se(4); c|
|00004c30| 6c 6f 73 65 28 35 29 3b | 20 63 6c 6f 73 65 28 36 |lose(5);| close(6|
|00004c40| 29 3b 0a 20 20 20 20 63 | 6c 6f 73 65 28 72 65 76 |);.    c|lose(rev|
|00004c50| 5f 66 64 29 3b 0a 20 20 | 20 20 69 66 20 28 74 6d |_fd);.  |  if (tm|
|00004c60| 70 5f 6e 61 6d 65 20 21 | 3d 20 4e 55 4c 4c 29 20 |p_name !|= NULL) |
|00004c70| 75 6e 6c 69 6e 6b 28 74 | 6d 70 5f 6e 61 6d 65 29 |unlink(t|mp_name)|
|00004c80| 3b 0a 20 20 20 20 65 78 | 69 74 28 32 29 3b 0a 7d |;.    ex|it(2);.}|
|00004c90| 0a 0a 0a 0a 2f 2a 20 2a | 2a 2a 2a 2a 2a 2a 2a 2a |..../* *|********|
|00004ca0| 2a 2a 2a 2a 2a 2a 2a 2a | 2a 2a 2a 2a 2a 2a 2a 2a |********|********|
|00004cb0| 2a 2a 2a 2a 2a 2a 2a 2a | 2a 2a 2a 2a 2a 2a 2a 2a |********|********|
|00004cc0| 2a 2a 2a 2a 2a 2a 2a 2a | 2a 2a 2a 2a 2a 2a 2a 2a |********|********|
|00004cd0| 2a 2a 2a 2a 2a 0a 20 2a | 20 72 6c 69 6e 65 3a 20 |*****. *| rline: |
|00004ce0| 67 65 74 20 6e 65 78 74 | 20 6c 69 6e 65 20 67 6f |get next| line go|
|00004cf0| 69 6e 67 20 62 61 63 6b | 77 61 72 64 73 2c 20 72 |ing back|wards, r|
|00004d00| 65 74 75 72 6e 20 70 65 | 72 74 69 6e 65 6e 74 20 |eturn pe|rtinent |
|00004d10| 69 6e 66 6f 0a 20 2a 0a | 20 2a 20 20 20 20 20 20 |info. *.| *      |
|00004d20| 20 20 54 68 69 73 20 72 | 6f 75 74 69 6e 65 20 72 |  This r|outine r|
|00004d30| 65 74 75 72 6e 73 20 74 | 68 65 20 6e 65 78 74 20 |eturns t|he next |
|00004d40| 6c 69 6e 65 20 67 6f 69 | 6e 67 20 62 61 63 6b 77 |line goi|ng backw|
|00004d50| 61 72 64 73 20 66 72 6f | 6d 0a 20 2a 20 20 20 74 |ards fro|m. *   t|
|00004d60| 68 65 20 65 6e 64 20 6f | 66 20 61 20 66 69 6c 65 |he end o|f a file|
|00004d70| 2e 20 20 49 74 20 61 6c | 73 6f 20 77 69 6c 6c 20 |.  It al|so will |
|00004d80| 6f 70 65 6e 20 61 20 6e | 65 77 20 66 69 6c 65 2c |open a n|ew file,|
|00004d90| 20 69 66 0a 20 2a 20 20 | 20 6e 65 63 63 65 73 61 | if. *  | neccesa|
|00004da0| 72 79 2c 20 61 6e 64 20 | 69 66 20 67 69 76 65 6e |ry, and |if given|
|00004db0| 20 61 20 66 69 6c 65 20 | 6e 61 6d 65 20 61 73 20 | a file |name as |
|00004dc0| 61 20 70 61 72 61 6d 65 | 74 65 72 2e 0a 20 2a 0a |a parame|ter.. *.|
|00004dd0| 20 2a 20 20 20 54 68 65 | 20 6c 69 6e 65 20 69 73 | *   The| line is|
|00004de0| 20 77 72 69 74 74 65 6e | 20 69 6e 74 6f 20 61 20 | written| into a |
|00004df0| 73 74 61 74 69 63 20 62 | 75 66 66 65 72 2c 20 61 |static b|uffer, a|
|00004e00| 6e 64 20 61 20 70 6f 69 | 6e 74 65 72 20 74 6f 0a |nd a poi|nter to.|
|00004e10| 20 2a 20 20 20 74 68 61 | 74 20 73 6d 61 6c 6c 20 | *   tha|t small |
|00004e20| 62 75 66 66 65 72 20 69 | 73 20 72 65 74 75 72 6e |buffer i|s return|
|00004e30| 65 64 2e 20 20 41 6c 73 | 6f 2c 20 74 68 65 20 70 |ed.  Als|o, the p|
|00004e40| 6f 73 69 74 69 6f 6e 20 | 69 6e 20 74 68 65 0a 20 |osition |in the. |
|00004e50| 2a 20 20 20 66 69 6c 65 | 20 6f 66 20 74 68 65 20 |*   file| of the |
|00004e60| 73 74 61 72 74 20 6f 66 | 20 74 68 65 20 6c 69 6e |start of| the lin|
|00004e70| 65 20 69 73 20 72 65 74 | 75 72 6e 65 64 2e 0a 20 |e is ret|urned.. |
|00004e80| 2a 2f 0a 20 63 68 61 72 | 20 2a 72 6c 69 6e 65 28 |*/. char| *rline(|
|00004e90| 70 6f 73 70 2c 20 66 6e | 61 6d 65 29 0a 20 20 20 |posp, fn|ame).   |
|00004ea0| 20 20 69 6e 74 20 2a 70 | 6f 73 70 3b 0a 20 20 20 |  int *p|osp;.   |
|00004eb0| 20 20 63 68 61 72 20 2a | 66 6e 61 6d 65 3b 0a 7b |  char *|fname;.{|
|00004ec0| 0a 09 72 65 67 69 73 74 | 65 72 20 63 68 61 72 20 |..regist|er char |
|00004ed0| 20 2a 73 31 2c 20 2a 73 | 32 3b 0a 09 73 74 61 74 | *s1, *s|2;..stat|
|00004ee0| 69 63 20 63 68 61 72 20 | 2a 62 75 66 70 3b 0a 09 |ic char |*bufp;..|
|00004ef0| 73 74 61 74 69 63 20 63 | 68 61 72 20 62 66 5b 52 |static c|har bf[R|
|00004f00| 42 55 46 5d 3b 0a 09 73 | 74 61 74 69 63 20 63 68 |BUF];..s|tatic ch|
|00004f10| 61 72 20 6c 62 66 5b 52 | 42 55 46 20 2a 20 32 5d |ar lbf[R|BUF * 2]|
|00004f20| 2c 20 72 6c 62 66 5b 52 | 42 55 46 20 2a 20 32 5d |, rlbf[R|BUF * 2]|
|00004f30| 3b 0a 09 73 74 61 74 69 | 63 20 69 6e 74 20 20 62 |;..stati|c int  b|
|00004f40| 66 5f 6c 65 6e 2c 20 66 | 70 6f 73 3b 0a 0a 09 69 |f_len, f|pos;...i|
|00004f50| 66 20 28 66 6e 61 6d 65 | 20 21 3d 20 4e 55 4c 4c |f (fname| != NULL|
|00004f60| 20 7c 7c 20 66 66 6c 61 | 67 29 20 7b 0a 09 09 69 | || ffla|g) {...i|
|00004f70| 66 20 28 20 28 62 66 5f | 6c 65 6e 20 3d 20 72 62 |f ( (bf_|len = rb|
|00004f80| 6c 6f 63 6b 28 26 66 70 | 6f 73 2c 20 62 66 2c 20 |lock(&fp|os, bf, |
|00004f90| 66 6e 61 6d 65 29 29 20 | 3c 20 30 29 20 72 65 74 |fname)) |< 0) ret|
|00004fa0| 75 72 6e 28 4e 55 4c 4c | 29 3b 0a 09 09 62 75 66 |urn(NULL|);...buf|
|00004fb0| 70 20 3d 20 62 66 20 2b | 20 28 62 66 5f 6c 65 6e |p = bf +| (bf_len|
|00004fc0| 20 2d 20 31 29 3b 0a 09 | 09 66 66 6c 61 67 20 3d | - 1);..|.fflag =|
|00004fd0| 20 30 3b 0a 09 7d 0a 0a | 09 2f 2a 20 62 79 20 6e | 0;..}..|./* by n|
|00004fe0| 6f 77 20 77 65 20 68 61 | 76 65 20 61 20 62 6c 6f |ow we ha|ve a blo|
|00004ff0| 63 6b 2c 20 73 6f 20 73 | 65 61 72 63 68 20 62 61 |ck, so s|earch ba|
|00005000| 63 6b 77 61 72 64 73 20 | 66 6f 72 20 6e 65 77 6c |ckwards |for newl|
|00005010| 69 6e 65 20 2a 2f 0a 09 | 66 6f 72 28 73 31 3d 6c |ine */..|for(s1=l|
|00005020| 62 66 2c 20 73 32 3d 73 | 31 20 2b 20 28 32 2a 52 |bf, s2=s|1 + (2*R|
|00005030| 42 55 46 20 2d 20 31 29 | 2c 20 2a 73 32 2d 2d 20 |BUF - 1)|, *s2-- |
|00005040| 3d 20 27 5c 30 27 3b 0a | 09 20 20 20 20 2a 62 75 |= '\0';.|.    *bu|
|00005050| 66 70 20 21 3d 20 27 5c | 6e 27 20 26 26 20 20 20 |fp != '\|n' &&   |
|00005060| 73 32 20 3e 3d 20 73 31 | 3b 0a 09 20 20 20 20 62 |s2 >= s1|;..    b|
|00005070| 75 66 70 2d 2d 2c 20 66 | 70 6f 73 2d 2d 29 0a 09 |ufp--, f|pos--)..|
|00005080| 20 20 7b 0a 09 09 2a 73 | 32 2d 2d 20 3d 20 2a 62 |  {...*s|2-- = *b|
|00005090| 75 66 70 3b 0a 09 09 69 | 66 20 28 62 75 66 70 20 |ufp;...i|f (bufp |
|000050a0| 3d 3d 20 62 66 29 20 7b | 0a 09 09 09 69 66 20 28 |== bf) {|....if (|
|000050b0| 28 62 66 5f 6c 65 6e 20 | 3d 20 72 62 6c 6f 63 6b |(bf_len |= rblock|
|000050c0| 28 26 66 70 6f 73 2c 62 | 66 2c 4e 55 4c 4c 29 29 |(&fpos,b|f,NULL))|
|000050d0| 20 3c 20 30 29 20 7b 0a | 09 09 09 09 66 66 6c 61 | < 0) {.|....ffla|
|000050e0| 67 20 3d 20 31 3b 0a 09 | 09 09 09 69 66 20 28 62 |g = 1;..|...if (b|
|000050f0| 66 5f 6c 65 6e 20 3d 3d | 20 4e 4f 5f 46 49 4c 45 |f_len ==| NO_FILE|
|00005100| 5f 46 4c 41 47 29 0a 09 | 09 09 09 20 20 72 65 74 |_FLAG)..|...  ret|
|00005110| 75 72 6e 28 4e 55 4c 4c | 29 3b 0a 09 09 09 09 62 |urn(NULL|);.....b|
|00005120| 72 65 61 6b 3b 0a 09 09 | 09 7d 0a 09 09 09 62 75 |reak;...|.}....bu|
|00005130| 66 70 20 3d 20 62 66 20 | 2b 20 62 66 5f 6c 65 6e |fp = bf |+ bf_len|
|00005140| 3b 0a 09 09 09 66 70 6f | 73 2b 2b 3b 0a 09 09 7d |;....fpo|s++;...}|
|00005150| 0a 09 7d 0a 09 66 70 6f | 73 2d 2d 3b 0a 09 69 66 |..}..fpo|s--;..if|
|00005160| 20 28 20 2d 2d 62 75 66 | 70 20 3c 20 62 66 20 29 | ( --buf|p < bf )|
|00005170| 20 66 66 6c 61 67 20 3d | 20 31 3b 0a 09 2a 70 6f | fflag =| 1;..*po|
|00005180| 73 70 20 3d 20 66 70 6f | 73 3b 0a 0a 09 72 65 74 |sp = fpo|s;...ret|
|00005190| 75 72 6e 28 2b 2b 73 32 | 29 3b 0a 7d 0a 0a 2f 2a |urn(++s2|);.}../*|
|000051a0| 20 2a 2a 2a 2a 2a 2a 2a | 2a 2a 2a 2a 2a 2a 2a 2a | *******|********|
|000051b0| 2a 2a 2a 2a 2a 2a 2a 2a | 2a 2a 2a 2a 2a 2a 2a 2a |********|********|
|000051c0| 2a 2a 2a 2a 2a 2a 2a 2a | 2a 2a 2a 2a 2a 2a 2a 2a |********|********|
|000051d0| 2a 2a 2a 2a 2a 2a 2a 2a | 2a 2a 2a 2a 2a 2a 2a 0a |********|*******.|
|000051e0| 20 2a 20 72 62 6c 6f 63 | 6b 3a 20 72 65 74 75 72 | * rbloc|k: retur|
|000051f0| 6e 20 6e 65 78 74 20 62 | 6c 6f 63 6b 20 67 6f 69 |n next b|lock goi|
|00005200| 6e 67 20 62 61 63 6b 77 | 61 72 64 20 69 6e 20 61 |ng backw|ard in a|
|00005210| 20 66 69 6c 65 0a 20 2a | 0a 20 2a 20 20 20 20 20 | file. *|. *     |
|00005220| 20 20 54 68 69 73 20 72 | 6f 75 74 69 6e 65 20 72 |  This r|outine r|
|00005230| 65 61 64 73 20 74 68 65 | 20 6e 65 78 74 2d 6c 61 |eads the| next-la|
|00005240| 73 74 20 62 6c 6f 63 6b | 20 69 6e 20 61 20 66 69 |st block| in a fi|
|00005250| 6c 65 2c 0a 20 2a 20 20 | 20 20 6f 72 20 73 74 61 |le,. *  |  or sta|
|00005260| 72 74 73 20 61 20 6e 65 | 77 20 66 69 6c 65 2c 20 |rts a ne|w file, |
|00005270| 67 69 76 65 6e 20 61 20 | 6e 61 6d 65 2e 0a 20 2a |given a |name.. *|
|00005280| 20 20 20 20 54 68 65 20 | 66 6c 61 67 20 20 73 74 |    The |flag  st|
|00005290| 79 20 20 74 65 6c 6c 73 | 20 77 68 65 74 68 65 72 |y  tells| whether|
|000052a0| 20 74 68 65 20 63 75 72 | 72 65 6e 74 20 66 69 6c | the cur|rent fil|
|000052b0| 65 20 64 65 73 63 72 69 | 70 74 6f 72 0a 20 2a 20 |e descri|ptor. * |
|000052c0| 20 20 20 68 61 73 20 62 | 65 65 6e 20 73 74 61 74 |   has b|een stat|
|000052d0| 2d 65 64 20 79 65 74 2e | 20 20 49 66 20 6e 6f 74 |-ed yet.|  If not|
|000052e0| 2c 20 69 74 20 69 73 20 | 69 6d 70 6c 69 63 69 74 |, it is |implicit|
|000052f0| 20 74 68 61 74 20 74 68 | 65 0a 20 2a 20 20 20 20 | that th|e. *    |
|00005300| 62 6c 6f 63 6b 73 20 77 | 69 6c 6c 20 62 65 20 74 |blocks w|ill be t|
|00005310| 61 6b 65 6e 20 66 72 6f | 6d 20 74 68 65 20 65 6e |aken fro|m the en|
|00005320| 64 20 6f 66 20 74 68 65 | 20 66 69 6c 65 2e 0a 20 |d of the| file.. |
|00005330| 2a 0a 20 2a 20 20 20 20 | 20 20 20 4e 6f 74 65 2c |*. *    |   Note,|
|00005340| 20 69 66 20 74 68 69 73 | 20 72 6f 75 74 69 6e 65 | if this| routine|
|00005350| 20 66 61 69 6c 73 20 77 | 69 74 68 20 65 72 72 6f | fails w|ith erro|
|00005360| 72 73 20 32 39 20 6f 72 | 20 35 20 74 68 65 6e 0a |rs 29 or| 5 then.|
|00005370| 20 2a 20 20 20 20 61 20 | 6d 65 73 73 61 67 65 20 | *    a |message |
|00005380| 69 73 20 70 72 69 6e 74 | 65 64 20 61 6e 64 20 74 |is print|ed and t|
|00005390| 68 65 20 77 68 6f 6c 65 | 20 70 72 6f 67 72 61 6d |he whole| program|
|000053a0| 20 61 62 6f 72 74 73 2e | 0a 20 2a 0a 20 2a 20 20 | aborts.|. *. *  |
|000053b0| 20 20 20 20 54 68 65 20 | 6c 65 6e 67 74 68 20 6f |    The |length o|
|000053c0| 66 20 74 68 65 20 62 6c | 6f 63 6b 20 72 65 61 64 |f the bl|ock read|
|000053d0| 2d 61 6e 64 2d 72 65 74 | 75 72 6e 65 64 20 69 73 |-and-ret|urned is|
|000053e0| 20 72 65 74 75 72 6e 65 | 64 2e 0a 20 2a 2f 0a 20 | returne|d.. */. |
|000053f0| 72 62 6c 6f 63 6b 28 66 | 70 6f 73 70 2c 20 62 75 |rblock(f|posp, bu|
|00005400| 66 2c 20 66 6e 61 6d 65 | 29 0a 20 20 20 20 20 69 |f, fname|).     i|
|00005410| 6e 74 20 2a 66 70 6f 73 | 70 3b 0a 20 20 20 20 20 |nt *fpos|p;.     |
|00005420| 63 68 61 72 20 2a 62 75 | 66 2c 20 2a 66 6e 61 6d |char *bu|f, *fnam|
|00005430| 65 3b 0a 7b 0a 09 73 74 | 61 74 69 63 20 69 6e 74 |e;.{..st|atic int|
|00005440| 20 6e 62 70 3b 0a 09 69 | 6e 74 20 20 20 20 6c 65 | nbp;..i|nt    le|
|00005450| 6e 3b 0a 0a 09 69 66 20 | 28 66 6e 61 6d 65 20 21 |n;...if |(fname !|
|00005460| 3d 20 4e 55 4c 4c 29 20 | 7b 0a 09 09 69 66 20 28 |= NULL) |{...if (|
|00005470| 20 72 65 76 5f 66 64 20 | 3e 20 2d 31 20 29 20 63 | rev_fd |> -1 ) c|
|00005480| 6c 6f 73 65 28 72 65 76 | 5f 66 64 29 3b 0a 09 09 |lose(rev|_fd);...|
|00005490| 69 66 20 28 20 28 72 65 | 76 5f 66 64 3d 6f 70 65 |if ( (re|v_fd=ope|
|000054a0| 6e 28 66 6e 61 6d 65 2c | 4f 5f 52 44 4f 4e 4c 59 |n(fname,|O_RDONLY|
|000054b0| 2c 30 29 29 20 3c 20 30 | 29 20 7b 0a 09 09 09 66 |,0)) < 0|) {....f|
|000054c0| 70 72 69 6e 74 66 28 73 | 74 64 65 72 72 2c 22 72 |printf(s|tderr,"r|
|000054d0| 65 76 67 72 65 70 3a 20 | 22 29 3b 0a 09 09 09 70 |evgrep: |");....p|
|000054e0| 65 72 72 6f 72 28 66 6e | 61 6d 65 29 3b 0a 09 09 |error(fn|ame);...|
|000054f0| 09 72 65 74 75 72 6e 28 | 4e 4f 5f 46 49 4c 45 5f |.return(|NO_FILE_|
|00005500| 46 4c 41 47 29 3b 0a 09 | 09 7d 0a 09 09 73 74 79 |FLAG);..|.}...sty|
|00005510| 20 3d 20 30 3b 0a 09 7d | 0a 0a 09 69 66 20 28 21 | = 0;..}|...if (!|
|00005520| 20 73 74 79 29 20 7b 0a | 09 09 73 74 72 75 63 74 | sty) {.|..struct|
|00005530| 20 73 74 61 74 20 73 62 | 3b 0a 09 09 69 66 20 28 | stat sb|;...if (|
|00005540| 66 73 74 61 74 28 72 65 | 76 5f 66 64 2c 20 26 73 |fstat(re|v_fd, &s|
|00005550| 62 29 20 3c 20 30 29 20 | 72 65 74 75 72 6e 28 2d |b) < 0) |return(-|
|00005560| 31 29 3b 0a 09 09 6e 62 | 70 20 3d 20 28 73 62 2e |1);...nb|p = (sb.|
|00005570| 73 74 5f 73 69 7a 65 20 | 20 2f 20 52 42 55 46 20 |st_size | / RBUF |
|00005580| 29 20 2a 20 52 42 55 46 | 3b 0a 09 09 73 74 79 20 |) * RBUF|;...sty |
|00005590| 3d 20 31 3b 0a 09 7d 0a | 0a 09 69 66 20 28 6e 62 |= 1;..}.|..if (nb|
|000055a0| 70 20 3c 20 30 29 20 72 | 65 74 75 72 6e 28 2d 31 |p < 0) r|eturn(-1|
|000055b0| 29 3b 0a 09 69 66 20 28 | 20 6c 73 65 65 6b 28 72 |);..if (| lseek(r|
|000055c0| 65 76 5f 66 64 2c 6e 62 | 70 2c 30 29 20 3c 20 30 |ev_fd,nb|p,0) < 0|
|000055d0| 29 20 7b 0a 09 09 69 66 | 20 28 65 72 72 6e 6f 20 |) {...if| (errno |
|000055e0| 3d 3d 20 32 39 20 20 7c | 7c 20 20 65 72 72 6e 6f |== 29  |||  errno|
|000055f0| 20 3d 3d 20 35 29 20 7b | 0a 09 09 09 70 65 72 72 | == 5) {|....perr|
|00005600| 6f 72 28 22 72 65 76 67 | 72 65 70 3a 20 72 62 6c |or("revg|rep: rbl|
|00005610| 6f 63 6b 22 29 3b 0a 09 | 09 09 65 78 69 74 28 31 |ock");..|..exit(1|
|00005620| 29 3b 0a 09 09 7d 0a 09 | 09 65 6c 73 65 20 72 65 |);...}..|.else re|
|00005630| 74 75 72 6e 28 2d 31 29 | 3b 0a 09 7d 0a 0a 09 69 |turn(-1)|;..}...i|
|00005640| 66 20 28 20 28 6c 65 6e | 20 3d 20 72 65 61 64 28 |f ( (len| = read(|
|00005650| 72 65 76 5f 66 64 2c 62 | 75 66 2c 52 42 55 46 29 |rev_fd,b|uf,RBUF)|
|00005660| 29 20 3c 20 30 29 20 72 | 65 74 75 72 6e 28 2d 31 |) < 0) r|eturn(-1|
|00005670| 29 3b 0a 09 2a 66 70 6f | 73 70 20 3d 20 6e 62 70 |);..*fpo|sp = nbp|
|00005680| 20 2b 20 6c 65 6e 3b 0a | 09 6e 62 70 20 3d 20 6e | + len;.|.nbp = n|
|00005690| 62 70 20 2d 20 52 42 55 | 46 3b 0a 09 72 65 74 75 |bp - RBU|F;..retu|
|000056a0| 72 6e 28 20 6c 65 6e 20 | 29 3b 0a 7d 0a 2a 2a 2a |rn( len |);.}.***|
|000056b0| 2a 2a 2a 2a 2a 2a 2a 2a | 2a 2a 2a 2a 2a 2a 2a 2a |********|********|
|000056c0| 2a 2a 2a 2a 2a 2a 2a 2a | 2a 2a 2a 2a 2a 2a 2a 2a |********|********|
|000056d0| 2a 2a 2a 2a 2a 2a 2a 2a | 2a 2a 2a 2a 2a 2a 2a 0a |********|*******.|
|000056e0| 20 2a 20 72 67 72 65 70 | 3a 20 62 61 63 6b 77 61 | * rgrep|: backwa|
|000056f0| 72 64 73 20 67 72 65 70 | 20 61 20 73 65 74 20 6f |rds grep| a set o|
|00005700| 66 20 66 69 6c 65 73 2c | 20 6f 72 20 73 74 64 69 |f files,| or stdi|
|00005710| 6e 0a 20 2a 0a 20 2a 20 | 20 20 20 20 20 52 67 72 |n. *. * |     Rgr|
|00005720| 65 70 20 70 65 72 66 6f | 72 6d 73 20 61 20 62 61 |ep perfo|rms a ba|
|00005730| 63 6b 77 61 72 64 73 20 | 67 72 65 70 20 6f 6e 20 |ckwards |grep on |
|00005740| 61 6e 20 69 6e 70 75 74 | 20 76 65 63 74 6f 72 0a |an input| vector.|
|00005750| 20 2a 20 20 20 6f 66 20 | 66 69 6c 65 73 2e 20 20 | *   of |files.  |
|00005760| 49 66 20 74 68 65 20 69 | 6e 70 75 74 20 76 65 63 |If the i|nput vec|
|00005770| 74 6f 72 20 69 73 20 4e | 75 6c 6c 2c 20 74 68 65 |tor is N|ull, the|
|00005780| 6e 20 74 68 65 20 73 74 | 64 69 6e 0a 20 2a 20 20 |n the st|din. *  |
|00005790| 20 69 73 20 61 73 73 75 | 6d 65 64 20 74 6f 20 62 | is assu|med to b|
|000057a0| 65 20 74 68 65 20 69 6e | 70 75 74 20 66 69 6c 65 |e the in|put file|
|000057b0| 2e 0a 20 2a 20 20 20 54 | 68 69 73 20 72 6f 75 74 |.. *   T|his rout|
|000057c0| 69 6e 65 20 75 73 65 73 | 20 72 6c 69 6e 65 28 29 |ine uses| rline()|
|000057d0| 20 74 6f 20 67 65 74 20 | 74 68 65 20 6e 65 78 74 | to get |the next|
|000057e0| 20 6c 69 6e 65 20 62 61 | 63 6b 77 61 72 64 73 2c | line ba|ckwards,|
|000057f0| 0a 20 2a 20 20 20 61 6e | 64 20 75 73 65 73 20 64 |. *   an|d uses d|
|00005800| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005810| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005820| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005830| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005840| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005850| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005860| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005870| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005880| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005890| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000058a0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000058b0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000058c0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000058d0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000058e0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000058f0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005900| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005910| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005920| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005930| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005940| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005950| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005960| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005970| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005980| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005990| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000059a0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000059b0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000059c0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000059d0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000059e0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000059f0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005a00| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005a10| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005a20| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005a30| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005a40| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005a50| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005a60| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005a70| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005a80| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005a90| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005aa0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005ab0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005ac0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005ad0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005ae0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005af0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005b00| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005b10| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005b20| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005b30| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005b40| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005b50| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005b60| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005b70| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005b80| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005b90| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005ba0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005bb0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005bc0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005bd0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005be0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005bf0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005c00| 20 64 61 74 61 20 61 66 | 74 65 72 20 61 0a 20 2a | data af|ter a. *|
|00005c10| 20 20 20 63 65 72 74 61 | 69 6e 20 66 69 6c 65 20 |   certa|in file |
|00005c20| 70 6f 73 69 74 69 6f 6e | 2e 20 20 49 74 20 63 68 |position|.  It ch|
|00005c30| 65 63 6b 73 20 76 61 72 | 69 6f 75 73 20 67 6c 6f |ecks var|ious glo|
|00005c40| 62 61 6c 20 66 6c 61 67 | 73 0a 20 2a 20 20 20 62 |bal flag|s. *   b|
|00005c50| 65 66 6f 72 65 20 73 74 | 61 72 74 69 6e 67 20 74 |efore st|arting t|
|00005c60| 68 65 20 63 6f 70 79 2c | 20 61 6e 64 20 70 72 69 |he copy,| and pri|
|00005c70| 6e 74 73 20 61 20 6d 65 | 73 73 61 67 65 20 69 66 |nts a me|ssage if|
|00005c80| 0a 20 2a 20 20 20 61 70 | 70 72 6f 70 72 69 61 74 |. *   ap|propriat|
|00005c90| 65 2e 20 20 54 68 65 20 | 66 69 6c 65 20 6f 66 20 |e.  The |file of |
|00005ca0| 77 68 69 63 68 20 61 20 | 74 61 69 6c 20 69 73 20 |which a |tail is |
|00005cb0| 74 6f 20 62 65 20 64 6f | 6e 65 0a 20 2a 20 20 20 |to be do|ne. *   |
|00005cc0| 69 73 20 61 73 73 75 6d | 65 64 20 74 6f 20 62 65 |is assum|ed to be|
|00005cd0| 20 6f 70 65 6e 20 6f 6e | 20 72 65 76 5f 66 64 2e | open on| rev_fd.|
|00005ce0| 0a 20 2a 2f 0a 20 74 61 | 69 6c 28 66 70 6f 73 2c |. */. ta|il(fpos,|
|00005cf0| 66 6e 61 6d 65 29 0a 20 | 20 20 20 20 69 6e 74 20 |fname). |    int |
|00005d00| 66 70 6f 73 3b 0a 20 20 | 20 20 20 63 68 61 72 20 |fpos;.  |   char |
|00005d10| 2a 66 6e 61 6d 65 3b 0a | 7b 0a 20 20 20 20 69 6e |*fname;.|{.    in|
|00005d20| 74 20 6c 65 6e 3b 0a 20 | 20 20 20 63 68 61 72 20 |t len;. |   char |
|00005d30| 62 75 66 5b 52 42 55 46 | 5d 3b 0a 0a 20 20 20 20 |buf[RBUF|];..    |
|00005d40| 69 66 20 28 70 72 69 6e | 74 5f 6e 61 6d 65 73 29 |if (prin|t_names)|
|00005d50| 20 70 72 69 6e 74 66 28 | 22 25 73 3a 22 2c 66 6e | printf(|"%s:",fn|
|00005d60| 61 6d 65 29 3b 0a 20 20 | 20 20 69 66 20 28 70 72 |ame);.  |  if (pr|
|00005d70| 69 6e 74 5f 62 6c 6f 63 | 6b 73 29 20 70 72 69 6e |int_bloc|ks) prin|
|00005d80| 74 66 28 22 73 74 61 72 | 74 69 6e 67 20 69 6e 20 |tf("star|ting in |
|00005d90| 25 64 22 2c 66 70 6f 73 | 2f 35 31 32 29 3b 0a 20 |%d",fpos|/512);. |
|00005da0| 20 20 20 69 66 20 28 70 | 72 69 6e 74 5f 6e 61 6d |   if (p|rint_nam|
|00005db0| 65 73 20 7c 7c 20 70 72 | 69 6e 74 5f 62 6c 6f 63 |es || pr|int_bloc|
|00005dc0| 6b 73 29 20 70 75 74 63 | 68 61 72 28 27 5c 6e 27 |ks) putc|har('\n'|
|00005dd0| 29 3b 0a 0a 20 20 20 20 | 69 66 20 28 6c 73 65 65 |);..    |if (lsee|
|00005de0| 6b 28 72 65 76 5f 66 64 | 2c 28 66 70 6f 73 3d 3d |k(rev_fd|,(fpos==|
|00005df0| 30 29 3f 28 30 29 3a 28 | 66 70 6f 73 2b 31 29 2c |0)?(0):(|fpos+1),|
|00005e00| 30 29 20 3c 20 30 29 20 | 7b 0a 09 70 65 72 72 6f |0) < 0) |{..perro|
|00005e10| 72 28 22 72 65 76 67 72 | 65 70 3a 20 74 61 69 6c |r("revgr|ep: tail|
|00005e20| 22 29 3b 0a 09 72 65 74 | 75 72 6e 28 2d 31 29 3b |");..ret|urn(-1);|
|00005e30| 0a 20 20 20 20 7d 0a 20 | 20 20 20 77 68 69 6c 65 |.    }. |   while|
|00005e40| 28 20 28 6c 65 6e 3d 72 | 65 61 64 28 72 65 76 5f |( (len=r|ead(rev_|
|00005e50| 66 64 2c 62 75 66 2c 52 | 42 55 46 29 29 20 3e 20 |fd,buf,R|BUF)) > |
|00005e60| 30 29 0a 09 66 77 72 69 | 74 65 28 62 75 66 2c 73 |0)..fwri|te(buf,s|
|00005e70| 69 7a 65 6f 66 28 63 68 | 61 72 29 2c 6c 65 6e 2c |izeof(ch|ar),len,|
|00005e80| 73 74 64 6f 75 74 29 3b | 0a 0a 20 20 20 20 72 65 |stdout);|..    re|
|00005e90| 74 75 72 6e 28 30 29 3b | 0a 7d 0a 0a 0a 0a 2f 2a |turn(0);|.}..../*|
|00005ea0| 20 2a 2a 2a 2a 2a 2a 2a | 2a 2a 2a 2a 2a 2a 2a 2a | *******|********|
|00005eb0| 2a 2a 2a 2a 2a 2a 2a 2a | 2a 2a 2a 2a 2a 2a 2a 2a |********|********|
|00005ec0| 2a 2a 2a 2a 2a 2a 2a 2a | 2a 2a 2a 2a 2a 2a 2a 2a |********|********|
|00005ed0| 2a 2a 2a 2a 2a 2a 2a 2a | 2a 2a 2a 2a 2a 2a 2a 0a |********|*******.|
|00005ee0| 20 2a 20 72 67 72 65 70 | 3a 20 62 61 63 6b 77 61 | * rgrep|: backwa|
|00005ef0| 72 64 73 20 67 72 65 70 | 20 61 20 73 65 74 20 6f |rds grep| a set o|
|00005f00| 66 20 66 69 6c 65 73 2c | 20 6f 72 20 73 74 64 69 |f files,| or stdi|
|00005f10| 6e 0a 20 2a 0a 20 2a 20 | 20 20 20 20 20 52 67 72 |n. *. * |     Rgr|
|00005f20| 65 70 20 70 65 72 66 6f | 72 6d 73 20 61 20 62 61 |ep perfo|rms a ba|
|00005f30| 63 6b 77 61 72 64 73 20 | 67 72 65 70 20 6f 6e 20 |ckwards |grep on |
|00005f40| 61 6e 20 69 6e 70 75 74 | 20 76 65 63 74 6f 72 0a |an input| vector.|
|00005f50| 20 2a 20 20 20 6f 66 20 | 66 69 6c 65 73 2e 20 20 | *   of |files.  |
|00005f60| 49 66 20 74 68 65 20 69 | 6e 70 75 74 20 76 65 63 |If the i|nput vec|
|00005f70| 74 6f 72 20 69 73 20 4e | 75 6c 6c 2c 20 74 68 65 |tor is N|ull, the|
|00005f80| 6e 20 74 68 65 20 73 74 | 64 69 6e 0a 20 2a 20 20 |n the st|din. *  |
|00005f90| 20 69 73 20 61 73 73 75 | 6d 65 64 20 74 6f 20 62 | is assu|med to b|
|00005fa0| 65 20 74 68 65 20 69 6e | 70 75 74 20 66 69 6c 65 |e the in|put file|
|00005fb0| 2e 0a 20 2a 20 20 20 54 | 68 69 73 20 72 6f 75 74 |.. *   T|his rout|
|00005fc0| 69 6e 65 20 75 73 65 73 | 20 72 6c 69 6e 65 28 29 |ine uses| rline()|
|00005fd0| 20 74 6f 20 67 65 74 20 | 74 68 65 20 6e 65 78 74 | to get |the next|
|00005fe0| 20 6c 69 6e 65 20 62 61 | 63 6b 77 61 72 64 73 2c | line ba|ckwards,|
|00005ff0| 0a 20 2a 20 20 20 61 6e | 64 20 75 73 65 73 20 64 |. *   an|d uses d|
+--------+-------------------------+-------------------------+--------+--------+