summaryrefslogtreecommitdiff
path: root/firstlast
blob: e46917c62951710a54bc4889e1b99ef3443dd6ce (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
#!/usr/bin/pypy
# -*- python -*-
#
# Crank through the log looking at when developers did their first and
# last patches.
#
# git log | firstlast -v versiondb
#
import argparse, pickle
import sys
import gitlog
import database
import ConfigFile

#
# Arg processing
#
def SetupArgs():
    p = argparse.ArgumentParser()
    p.add_argument('-v', '--versiondb', help = 'Version database file',
                   required = False, default = 'committags.db')
    p.add_argument('-c', '--config', help = 'Configuration file',
                   required = True)
    p.add_argument('-d', '--dbdir', help = 'Where to find the config database files',
                   required = False, default = '')
    p.add_argument('-f', '--first', help = 'First version for detailed tracking',
                   required = False, default = '')
    p.add_argument('-l', '--last', help = 'Last version for detailed tracking',
                   required = False, default = '')
    return p.parse_args()

#
# Try to track the first directory a new developer touches.
#
FirstDirs = { }

def TrackFirstDirs(patch):
    dirs = [ ]
    for file in patch.files:
        split = file.split('/')
        if split[0] in ['arch', 'drivers', 'fs']:
            track = '/'.join(split[0:2])
        else:
            track = split[0]
        if track not in dirs:
            dirs.append(track)
    for dir in dirs:
        try:
            FirstDirs[dir] += 1
        except KeyError:
            FirstDirs[dir] = 1

def cmpdirs(d1, d2):
    return FirstDirs[d2] - FirstDirs[d1]

def PrintFirstDirs():
    dirs = FirstDirs.keys()
    dirs.sort(cmpdirs)
    for dir in dirs[:20]:
        print '%5d: %s' % (FirstDirs[dir], dir)

#
# Let's also track who they worked for.
#
FirstEmpls = { }

def TrackFirstEmpl(name):
    try:
        FirstEmpls[name] += 1
    except KeyError:
        FirstEmpls[name] = 1

def cmpempls(e1, e2):
    return FirstEmpls[e2] - FirstEmpls[e1]

def PrintFirstEmpls():
    empls = FirstEmpls.keys()
    empls.sort(cmpempls)
    print '\nEmployers:'
    for e in empls[:20]:
        print '%5d: %s' % (FirstEmpls[e], e)

#
# Version comparison stuff.  Kernel-specific, obviously.
#
def die(gripe):
    sys.stderr.write(gripe + '\n')
    sys.exit(1)

def versionmap(vers):
    split = vers.split('.')
    if not (2 <= len(split) <= 3):
        die('funky version %s' % (vers))
    if split[0] in ['v2', '2']:
        return int(split[2])
    if split[0] in ['v3', '3']:
        return 100 + int(split[1])
    die('Funky version %s' % (vers))

T_First = 0
T_Last = 999999

def SetTrackingVersions(args):
    global T_First, T_Last
    if args.first:
        T_First = versionmap(args.first)
    if args.last:
        T_Last = versionmap(args.last)

def TrackingVersion(vers):
    return T_First <= versionmap(vers) <= T_Last

#
# Main program.
#
args = SetupArgs()
VDB = pickle.load(open(args.versiondb, 'r'))
ConfigFile.ConfigFile(args.config, args.dbdir)
SetTrackingVersions(args)

Firsts = { }
Lasts = { }

patch = gitlog.grabpatch(sys.stdin)
while patch:
    try:
        v = VDB[patch.commit]
    except KeyError:
        print 'Funky commit', patch.commit
        continue
    try:
        x = patch.author.patches
    except AttributeError:
        print 'Attr err', patch.commit
        continue
    #
    # The first patch we see is the last they committed, since git
    # lists things in backwards order.
    #
    if len(patch.author.patches) == 0:
        patch.author.lastvers = v
        try:
            Lasts[v].append(patch.author)
        except KeyError:
            Lasts[v] = [patch.author]
    patch.author.firstvers = v
    patch.author.addpatch(patch)
    patch = gitlog.grabpatch(sys.stdin)

for h in database.AllHackers():
    if len(h.patches) > 0:
        try:
            Firsts[h.firstvers].append(h)
        except KeyError:
            Firsts[h.firstvers] = [h]
        #
        # Track details, but only for versions we care about
        #
        if TrackingVersion(h.firstvers):
            p = h.patches[-1]
            TrackFirstDirs(p)
            empl = h.emailemployer(p.email, p.date)
            TrackFirstEmpl(empl.name)

for v in Lasts.keys():
    print v, len(Firsts[v]), len(Lasts[v])
PrintFirstDirs()
PrintFirstEmpls()