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File tools/lib/log.tcl part of check-in [ebb94f75cb] - Semantics of the progress display extended to allow an empty maximum to signal use of an infinite (open-ended) display. by aku on 2007-09-17 01:41:58.

0000: 23 20 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d  # --------------
0010: 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d  ----------------
0020: 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d  ----------------
0030: 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d  ----------------
0040: 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 0a  ---------------.
0050: 23 20 54 6f 6f 6c 20 70 61 63 6b 61 67 65 73 2e  # Tool packages.
0060: 20 4c 6f 67 67 69 6e 67 20 28 61 6b 61 20 55 73   Logging (aka Us
0070: 65 72 20 66 65 65 64 62 61 63 6b 29 2e 0a 0a 23  er feedback)...#
0080: 20 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d   ---------------
0090: 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d  ----------------
00a0: 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d  ----------------
00b0: 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d  ----------------
00c0: 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 0a 23  --------------.#
00d0: 20 52 65 71 75 69 72 65 6d 65 6e 74 73 0a 0a 70   Requirements..p
00e0: 61 63 6b 61 67 65 20 72 65 71 75 69 72 65 20 54  ackage require T
00f0: 63 6c 20 38 2e 34 0a 6e 61 6d 65 73 70 61 63 65  cl 8.4.namespace
0100: 20 65 76 61 6c 20 3a 3a 76 63 3a 3a 74 6f 6f 6c   eval ::vc::tool
0110: 73 3a 3a 6c 6f 67 20 7b 7d 0a 0a 23 20 2d 2d 2d  s::log {}..# ---
0120: 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d  ----------------
0130: 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d  ----------------
0140: 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d  ----------------
0150: 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d  ----------------
0160: 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 0a 23 20 41 50 49  ----------.# API
0170: 0a 0a 23 20 46 65 65 64 62 61 63 6b 20 67 65 6e  ..# Feedback gen
0180: 65 72 61 74 69 6f 6e 2e 0a 23 0a 23 09 76 63 3a  eration..#.#.vc:
0190: 3a 74 6f 6f 6c 73 3a 3a 6c 6f 67 3a 3a 77 72 69  :tools::log::wri
01a0: 74 65 20 20 20 20 76 65 72 62 6f 73 69 74 79 20  te    verbosity 
01b0: 73 79 73 74 65 6d 20 74 65 78 74 20 20 2d 20 57  system text  - W
01c0: 72 69 74 65 20 6d 65 73 73 61 67 65 20 74 6f 20  rite message to 
01d0: 74 68 65 20 6c 6f 67 2e 0a 23 09 76 63 3a 3a 74  the log..#.vc::t
01e0: 6f 6f 6c 73 3a 3a 6c 6f 67 3a 3a 70 72 6f 67 72  ools::log::progr
01f0: 65 73 73 20 76 65 72 62 6f 73 69 74 79 20 73 79  ess verbosity sy
0200: 73 74 65 6d 20 6e 20 6d 61 78 20 2d 20 44 72 69  stem n max - Dri
0210: 76 65 20 61 20 70 72 6f 67 72 65 73 73 20 64 69  ve a progress di
0220: 73 70 6c 61 79 2e 0a 23 0a 23 20 20 20 20 20 20  splay..#.#      
0230: 20 4e 6f 74 65 3a 20 6d 61 78 20 65 6d 70 74 79   Note: max empty
0240: 20 3d 3e 20 69 6e 66 69 6e 69 74 65 20 70 72 6f   => infinite pro
0250: 67 72 65 73 73 20 64 69 73 70 6c 61 79 2c 20 6f  gress display, o
0260: 74 68 65 72 77 69 73 65 20 61 20 66 69 6e 69 74  therwise a finit
0270: 65 20 64 69 73 70 6c 61 79 2e 0a 0a 23 20 41 64  e display...# Ad
0280: 6d 69 6e 69 73 74 72 61 74 69 76 65 20 6f 70 65  ministrative ope
0290: 72 61 74 69 6f 6e 73 2e 0a 23 0a 23 09 76 63 3a  rations..#.#.vc:
02a0: 3a 74 6f 6f 6c 73 3a 3a 6c 6f 67 3a 3a 76 65 72  :tools::log::ver
02b0: 62 6f 73 69 74 79 20 6c 65 76 65 6c 20 20 2d 20  bosity level  - 
02c0: 53 65 74 20 74 68 65 20 76 65 72 62 6f 73 69 74  Set the verbosit
02d0: 79 20 6c 65 76 65 6c 20 6f 66 20 74 68 65 20 61  y level of the a
02e0: 70 70 6c 69 63 61 74 69 6f 6e 2e 0a 23 09 76 63  pplication..#.vc
02f0: 3a 3a 74 6f 6f 6c 73 3a 3a 6c 6f 67 3a 3a 76 65  ::tools::log::ve
0300: 72 62 6f 73 69 74 79 3f 20 20 20 20 20 20 20 2d  rbosity?       -
0310: 20 51 75 65 72 79 20 74 68 65 20 76 65 72 62 6f   Query the verbo
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0340: 09 76 63 3a 3a 74 6f 6f 6c 73 3a 3a 6c 6f 67 3a  .vc::tools::log:
0350: 3a 73 65 74 43 6d 64 20 63 6d 64 70 72 65 66 69  :setCmd cmdprefi
0360: 78 20 2d 20 53 65 74 20 63 61 6c 6c 62 61 63 6b  x - Set callback
0370: 20 66 6f 72 20 6f 75 74 70 75 74 0a 23 09 76 63   for output.#.vc
0380: 3a 3a 74 6f 6f 6c 73 3a 3a 6c 6f 67 3a 3a 73 79  ::tools::log::sy
0390: 73 74 65 6d 20 6e 61 6d 65 20 20 20 20 20 20 2d  stem name      -
03a0: 20 52 65 67 69 73 74 65 72 20 61 20 73 79 73 74   Register a syst
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03d0: 6e 67 29 2e 0a 0a 23 20 43 61 6c 6c 62 61 63 6b  ng)...# Callback
03e0: 20 41 50 49 20 28 20 45 78 65 63 75 74 65 64 20   API ( Executed 
03f0: 61 74 20 74 68 65 20 67 6c 6f 62 61 6c 20 6c 65  at the global le
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0410: 66 69 78 20 27 77 72 69 74 65 27 20 20 20 20 73  fix 'write'    s
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0430: 70 72 65 66 69 78 20 27 70 72 6f 67 72 65 73 73  prefix 'progress
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0450: 23 20 53 74 61 6e 64 61 72 64 20 63 61 6c 6c 62  # Standard callb
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0490: 75 74 2e 0a 0a 23 20 2d 2d 2d 2d 2d 2d 2d 2d 2d  ut...# ---------
04a0: 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d  ----------------
04b0: 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d  ----------------
04c0: 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d  ----------------
04d0: 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d  ----------------
04e0: 2d 2d 2d 2d 0a 23 20 41 50 49 20 49 6d 70 6c 65  ----.# API Imple
04f0: 6d 65 6e 74 61 74 69 6f 6e 20 2d 20 46 65 65 64  mentation - Feed
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0580: 20 76 65 72 62 6f 73 69 74 79 20 69 73 20 6c 65   verbosity is le
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05a0: 23 20 63 68 6f 73 65 6e 20 76 65 72 62 6f 73 69  # chosen verbosi
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05c0: 20 76 65 72 62 6f 73 69 74 79 20 30 20 63 61 6e   verbosity 0 can
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05e0: 0a 70 72 6f 63 20 3a 3a 76 63 3a 3a 74 6f 6f 6c  .proc ::vc::tool
05f0: 73 3a 3a 6c 6f 67 3a 3a 77 72 69 74 65 20 7b 76  s::log::write {v
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06b0: 73 79 73 66 6d 74 20 24 73 79 73 74 65 6d 5d 20  sysfmt $system] 
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0790: 0a 0a 70 72 6f 63 20 3a 3a 76 63 3a 3a 74 6f 6f  ..proc ::vc::too
07a0: 6c 73 3a 3a 6c 6f 67 3a 3a 70 72 6f 67 72 65 73  ls::log::progres
07b0: 73 20 7b 76 65 72 62 6f 73 69 74 79 20 73 79 73  s {verbosity sys
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0890: 20 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d   ---------------
08a0: 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d  ----------------
08b0: 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d  ----------------
08c0: 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d  ----------------
08d0: 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 0a 23  --------------.#
08e0: 20 41 50 49 20 49 6d 70 6c 65 6d 65 6e 74 61 74   API Implementat
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0980: 70 72 6f 63 20 3a 3a 76 63 3a 3a 74 6f 6f 6c 73  proc ::vc::tools
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09a0: 20 7b 6c 65 76 65 6c 7d 20 7b 0a 20 20 20 20 76   {level} {.    v
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0a50: 20 7b 7d 20 7b 0a 20 20 20 20 76 61 72 69 61 62   {} {.    variab
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0a70: 72 65 74 75 72 6e 20 20 24 6c 6f 67 6c 65 76 65  return  $logleve
0a80: 6c 0a 7d 0a 0a 23 20 53 65 74 20 74 68 65 20 6c  l.}..# Set the l
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0ab0: 6f 75 74 70 75 74 20 6f 66 20 6d 65 73 73 61 67  output of messag
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0ae0: 0a 70 72 6f 63 20 3a 3a 76 63 3a 3a 74 6f 6f 6c  .proc ::vc::tool
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0b00: 63 6d 64 70 72 65 66 69 78 7d 20 7b 0a 20 20 20  cmdprefix} {.   
0b10: 20 76 61 72 69 61 62 6c 65 20 6c 6f 67 63 6d 64   variable logcmd
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0b30: 72 65 74 75 72 6e 0a 7d 0a 0a 23 20 52 65 67 69  return.}..# Regi
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0c00: 73 0a 23 20 69 6e 76 6f 6b 65 64 2e 0a 0a 70 72  s.# invoked...pr
0c10: 6f 63 20 3a 3a 76 63 3a 3a 74 6f 6f 6c 73 3a 3a  oc ::vc::tools::
0c20: 6c 6f 67 3a 3a 73 79 73 74 65 6d 20 7b 6e 61 6d  log::system {nam
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0ca0: 0a 0a 20 20 20 20 73 65 74 20 73 79 73 6c 65 6e  ..    set syslen
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0ce0: 0a 23 20 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d  .# -------------
0cf0: 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d  ----------------
0d00: 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d  ----------------
0d10: 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d  ----------------
0d20: 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d  ----------------
0d30: 0a 23 20 49 6e 74 65 72 6e 61 6c 20 6f 70 65 72  .# Internal oper
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0da0: 20 3a 3a 76 63 3a 3a 74 6f 6f 6c 73 3a 3a 6c 6f   ::vc::tools::lo
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0e30: 70 72 6f 63 20 3a 3a 76 63 3a 3a 74 6f 6f 6c 73  proc ::vc::tools
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0e50: 20 7b 73 79 73 74 65 6d 20 74 65 78 74 7d 20 7b   {system text} {
0e60: 0a 20 20 20 20 70 75 74 73 20 22 24 73 79 73 74  .    puts "$syst
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0ed0: 6c 69 6e 65 20 77 69 74 68 6f 75 74 20 61 64 76  line without adv
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0ef0: 76 63 3a 3a 74 6f 6f 6c 73 3a 3a 6c 6f 67 3a 3a  vc::tools::log::
0f00: 4f 55 54 2f 70 72 6f 67 72 65 73 73 20 7b 73 79  OUT/progress {sy
0f10: 73 74 65 6d 20 6e 20 6d 61 78 7d 20 7b 0a 20 20  stem n max} {.  
0f20: 20 20 69 66 20 7b 24 6d 61 78 20 65 71 20 7b 7d    if {$max eq {}
0f30: 7d 20 7b 0a 09 70 75 74 73 20 2d 6e 6f 6e 65 77  } {..puts -nonew
0f40: 6c 69 6e 65 20 22 24 73 79 73 74 65 6d 20 24 6e  line "$system $n
0f50: 5c 72 22 0a 20 20 20 20 7d 20 65 6c 73 65 20 7b  \r".    } else {
0f60: 0a 09 70 75 74 73 20 2d 6e 6f 6e 65 77 6c 69 6e  ..puts -nonewlin
0f70: 65 20 22 24 73 79 73 74 65 6d 20 5b 66 6f 72 6d  e "$system [form
0f80: 61 74 20 25 5b 73 74 72 69 6e 67 20 6c 65 6e 67  at %[string leng
0f90: 74 68 20 24 6d 61 78 5d 73 20 24 6e 5d 2f 24 6d  th $max]s $n]/$m
0fa0: 61 78 5c 72 22 0a 20 20 20 20 7d 0a 20 20 20 20  ax\r".    }.    
0fb0: 66 6c 75 73 68 20 73 74 64 6f 75 74 0a 20 20 20  flush stdout.   
0fc0: 20 72 65 74 75 72 6e 0a 7d 0a 0a 23 20 2d 2d 2d   return.}..# ---
0fd0: 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d  ----------------
0fe0: 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d  ----------------
0ff0: 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d  ----------------
1000: 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d  ----------------
1010: 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 0a 0a 6e 61 6d 65  ----------..name
1020: 73 70 61 63 65 20 65 76 61 6c 20 3a 3a 76 63 3a  space eval ::vc:
1030: 3a 74 6f 6f 6c 73 3a 3a 6c 6f 67 20 7b 0a 20 20  :tools::log {.  
1040: 20 20 76 61 72 69 61 62 6c 65 20 6c 6f 67 6c 65    variable logle
1050: 76 65 6c 20 30 20 20 20 20 20 20 20 20 20 20 20  vel 0           
1060: 20 20 20 20 20 20 20 20 20 20 3b 20 23 20 41 6c            ; # Al
1070: 6c 6f 77 20 6f 6e 6c 79 20 75 6e 69 6e 74 65 72  low only uninter
1080: 75 70 74 69 62 6c 65 20 6d 65 73 73 61 67 65 73  uptible messages
1090: 2e 0a 20 20 20 20 76 61 72 69 61 62 6c 65 20 6c  ..    variable l
10a0: 6f 67 63 6d 64 20 20 20 3a 3a 76 63 3a 3a 74 6f  ogcmd   ::vc::to
10b0: 6f 6c 73 3a 3a 6c 6f 67 3a 3a 4f 55 54 20 3b 20  ols::log::OUT ; 
10c0: 23 20 53 74 61 6e 64 61 72 64 20 6f 75 74 70 75  # Standard outpu
10d0: 74 20 74 6f 20 73 74 64 6f 75 74 2e 0a 20 20 20  t to stdout..   
10e0: 20 76 61 72 69 61 62 6c 65 20 73 79 73 66 6d 74   variable sysfmt
10f0: 20 25 73 20 20 20 20 20 20 20 20 20 20 20 20 20   %s             
1100: 20 20 20 20 20 20 20 20 20 3b 20 23 20 4e 6f 6e           ; # Non
1110: 2d 74 61 62 75 6c 61 72 20 66 6f 72 6d 61 74 74  -tabular formatt
1120: 69 6e 67 2e 0a 20 20 20 20 76 61 72 69 61 62 6c  ing..    variabl
1130: 65 20 73 79 73 6c 65 6e 20 30 20 20 20 20 20 20  e syslen 0      
1140: 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20                  
1150: 20 3b 20 23 20 44 69 74 74 6f 2e 0a 0a 20 20 20   ; # Ditto...   
1160: 20 6e 61 6d 65 73 70 61 63 65 20 65 78 70 6f 72   namespace expor
1170: 74 20 77 72 69 74 65 20 70 72 6f 67 72 65 73 73  t write progress
1180: 0a 7d 0a 0a 23 20 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d  .}..# ----------
1190: 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d  ----------------
11a0: 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d  ----------------
11b0: 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d  ----------------
11c0: 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d  ----------------
11d0: 2d 2d 2d 0a 23 20 52 65 61 64 79 0a 0a 70 61 63  ---.# Ready..pac
11e0: 6b 61 67 65 20 70 72 6f 76 69 64 65 20 76 63 3a  kage provide vc:
11f0: 3a 74 6f 6f 6c 73 3a 3a 6c 6f 67 20 31 2e 30 0a  :tools::log 1.0.
1200: 72 65 74 75 72 6e 0a                             return.