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Added Tcl program to show commits graphicaly.

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Used to generate http://antirez.com/news/98.
This commit is contained in:
antirez 2015-11-20 15:45:25 +01:00
parent 4b0b28b469
commit 4d625bb4c8
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16
utils/graphs/commits-over-time/README.md Normal file
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This Tcl script is what I used in order to generate the graph you
can find at http://antirez.com/news/98. It's really quick & dirty, more
a trow away program than anything else, but probably could be reused or
modified in the future in order to visualize other similar data or an
updated version of the same data.
The usage is trivial:
./genhtml.tcl > output.html
The generated HTML is quite broken but good enough to grab a screenshot
from the browser. Feel free to improve it if you got time / interest.
Note that the code filtering the tags, and the hardcoded branch name, does
not make the script, as it is, able to analyze a different repository.
However the changes needed are trivial.

96
utils/graphs/commits-over-time/genhtml.tcl Executable file
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#!/usr/bin/env tclsh
# Load commits history as "sha1 unixtime".
set commits [exec git log unstable {--pretty="%H %at"}]
set raw_tags [exec git tag]
# Load all the tags that are about stable releases.
foreach tag $raw_tags {
if {[string match v*-stable $tag]} {
set tag [string range $tag 1 end-7]
puts $tag
}
if {[regexp {^[0-9]+.[0-9]+.[0-9]+$} $tag]} {
lappend tags $tag
}
}
# For each tag, create a list of "name unixtime"
foreach tag $tags {
set taginfo [exec git log $tag -n 1 "--pretty=\"$tag %at\""]
set taginfo [string trim $taginfo {"}]
lappend labels $taginfo
}
# For each commit, check the amount of code changed and create an array
# mapping the commit to the number of lines affected.
foreach c $commits {
set stat [exec git show --oneline --numstat [lindex $c 0]]
set linenum 0
set affected 0
foreach line [split $stat "\n"] {
incr linenum
if {$linenum == 1 || [string match *deps/* $line]} continue
if {[catch {llength $line} numfields]} continue
if {$numfields == 0} continue
catch {
incr affected [lindex $line 0]
incr affected [lindex $line 1]
}
}
set commit_to_affected([lindex $c 0]) $affected
}
set base_time [lindex [lindex $commits end] 1]
puts [clock format $base_time]
# Generate a graph made of HTML DIVs.
puts {<html>
<style>
.box {
position:absolute;
width:10px;
height:5px;
border:1px black solid;
background-color:#44aa33;
opacity: 0.04;
}
.label {
position:absolute;
background-color:#dddddd;
font-family:helvetica;
font-size:12px;
padding:2px;
color:#666;
border:1px #aaa solid;
border-radius: 5px;
}
#outer {
position:relative;
width:1500;
height:500;
border:1px #aaa solid;
}
</style>
<div id="outer">
}
foreach c $commits {
set sha [lindex $c 0]
set t [expr {([lindex $c 1]-$base_time)/(3600*24*2)}]
set affected [expr $commit_to_affected($sha)]
set left $t
set height [expr {log($affected)*20}]
puts "<div class=\"box\" style=\"left:$left; bottom:0; height:$height\"></div>"
}
set bottom -30
foreach l $labels {
set name [lindex $l 0]
set t [expr {([lindex $l 1]-$base_time)/(3600*24*2)}]
set left $t
if {$left < 0} continue
incr bottom -20
if {$bottom == -210} {set bottom -30}
puts "<div class=\"label\" style=\"left:$left; bottom:$bottom\">$name</div>"
}
puts {</div></html>}