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haas:spring2016:cprog:projects:cbf0 [2016/03/22 17:13] – [Bonus Opportunities] wedgehaas:spring2016:cprog:projects:cbf0 [2016/03/22 19:56] (current) – [Unthrottled display (512 bytes)] wedge
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       * error message should be of the form: **Error: Terminal height is less than 20 lines!**       * error message should be of the form: **Error: Terminal height is less than 20 lines!**
       * Unlike the width, the height can impact program output (taller terminals, if not otherwise throttled by a second command-line argument, can auto-expand if there is more room and data to display).       * Unlike the width, the height can impact program output (taller terminals, if not otherwise throttled by a second command-line argument, can auto-expand if there is more room and data to display).
-  * If a second command-line argument exists, assume it is a sizing throttle (controlling the number of lines your program will display). If no argument is given (or that argument is a **0**), assume autosize (use the detected height to be your maximum in your calculations).+  * The second command-line argument is a sizing throttle (controlling the number of lines your program will display). If a  **0** is given, assume autosize (use the detected height to be your maximum in your calculations).
   * Display an ASCII header identifying the various fields (offset, hex, ascii), surrounded by dashed lines, running 79 characters in width. See below for more details.   * Display an ASCII header identifying the various fields (offset, hex, ascii), surrounded by dashed lines, running 79 characters in width. See below for more details.
   * Each row after the header will display:   * Each row after the header will display:
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 <cli> <cli>
-lab46:~/src/cprog$ ./hexview win7.mbr+lab46:~/src/cprog$ ./hexview win7.mbr 0
 ------------------------------------------------------------------------------- -------------------------------------------------------------------------------
 offset      0  1  2  3   4  5  6  7   8  9  a  b   c  d  e  f  ascii offset      0  1  2  3   4  5  6  7   8  9  a  b   c  d  e  f  ascii
Line 213: Line 213:
  
 ====Sample output==== ====Sample output====
 +
 +As an example, running the program with the following arguments could produce results like this:
  
 <cli> <cli>
-lab46:~/src/cprog$ ./fdisk win7.mbr 1 +lab46:~/src/cprog$ ./hexview win7.mbr 0 0x1be 1 0x1c2 1 0x1c6 4 0x1ca 4 0x1fe 2 
-------------------------------------------------------------------------------- +</cli>
-offset      0  1  2  3   4  5  6  7   8  9  a  b   c  d  e  f  ascii +
-------------------------------------------------------------------------------- +
-0x00000000 33 c0 8e d0  bc 00 7c 8e  c0 8e d8 be  00 7c bf 00  3.....|......|.. +
-0x00000010 06 b9 00 02  fc f3 a4 50  68 1c 06 cb  fb b9 04 00  .......Ph....... +
-0x00000020 bd be 07 80  7e 00 00 7c  0b 0f 85 0e  01 83 c5 10  ....~..|........ +
-0x00000030 e2 f1 cd 18  88 56 00 55  c6 46 11 05  c6 46 10 00  .....V.U.F...F.. +
-0x00000040 b4 41 bb aa  55 cd 13 5d  72 0f 81 fb  55 aa 75 09  .A..U..]r...U.u. +
-0x00000050 f7 c1 01 00  74 03 fe 46  10 66 60 80  7e 10 00 74  ....t..F.f`.~..t +
-0x00000060 26 66 68 00  00 00 00 66  ff 76 08 68  00 00 68 00  &fh....f.v.h..h. +
-0x00000070 7c 68 01 00  68 10 00 b4  42 8a 56 00  8b f4 cd 13  |h..h...B.V..... +
-0x00000080 9f 83 c4 10  9e eb 14 b8  01 02 bb 00  7c 8a 56 00  ............|.V. +
-0x00000090 8a 76 01 8a  4e 02 8a 6e  03 cd 13 66  61 73 1c fe  .v..N..n...fas.. +
-0x000000a0 4e 11 75 0c  80 7e 00 80  0f 84 8a 00  b2 80 eb 84  N.u..~.......... +
-0x000000b0 55 32 e4 8a  56 00 cd 13  5d eb 9e 81  3e fe 7d 55  U2..V...]...>.}U +
-0x000000c0 aa 75 6e ff  76 00 e8 8d  00 75 17 fa  b0 d1 e6 64  .un.v....u.....d +
-0x000000d0 e8 83 00 b0  df e6 60 e8  7c 00 b0 ff  e6 64 e8 75  ......`.|....d.u +
-0x000000e0 00 fb b8 00  bb cd 1a 66  23 c0 75 3b  66 81 fb 54  .......f#.u;f..T +
-0x000000f0 43 50 41 75  32 81 f9 02  01 72 2c 66  68 07 bb 00  CPAu2....r,fh... +
-0x00000100 00 66 68 00  02 00 00 66  68 08 00 00  00 66 53 66  .fh....fh....fSf +
-0x00000110 53 66 55 66  68 00 00 00  00 66 68 00  7c 00 00 66  SfUfh....fh.|..f +
-0x00000120 61 68 00 00  07 cd 1a 5a  32 f6 ea 00  7c 00 00 cd  ah.....Z2...|... +
-0x00000130 18 a0 b7 07  eb 08 a0 b6  07 eb 03 a0  b5 07 32 e4  ..............2. +
-0x00000140 05 00 07 8b  f0 ac 3c 00  74 09 bb 07  00 b4 0e cd  ......<.t....... +
-0x00000150 10 eb f2 f4  eb fd 2b c9  e4 64 eb 00  24 02 e0 f8  ......+..d..$... +
-0x00000160 24 02 c3 49  6e 76 61 6c  69 64 20 70  61 72 74 69  $..Invalid parti +
-0x00000170 74 69 6f 6e  20 74 61 62  6c 65 00 45  72 72 6f 72  tion table.Error +
-0x00000180 20 6c 6f 61  64 69 6e 67  20 6f 70 65  72 61 74 69   loading operati +
-0x00000190 6e 67 20 73  79 73 74 65  6d 00 4d 69  73 73 69 6e  ng system.Missin +
-0x000001a0 67 20 6f 70  65 72 61 74  69 6e 67 20  73 79 73 74  g operating syst +
-0x000001b0 65 6d 00 00  00 63 7b 9a  98 a8 b3 d9  00 00 80 01  em...c{......... +
-0x000001c0 01 00 0b 7f  3f 03 3f 00  00 00 c1 7d  00 00 00 00  ....?.?....}.... +
-0x000001d0 01 04 07 6d  ed df 00 7e  00 00 80 8d  79 00 00 00  ...m...~....y... +
-0x000001e0 00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  ................ +
-0x000001f0 00 00 00 00  00 00 00 00  00 00 00 00  00 00 55 aa  ..............U. +
--------------------------------------------------------------------------------+
  
-</cli>+{{:haas:spring2016:cprog:projects:hexviewer.png?640|}}
 ====ANSI escape sequences for color==== ====ANSI escape sequences for color====
 This probably isn't very portable, and depending on the terminal, it may not work for some people. This probably isn't very portable, and depending on the terminal, it may not work for some people.
haas/spring2016/cprog/projects/cbf0.1458666811.txt.gz · Last modified: 2016/03/22 17:13 by wedge

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