xref: /curl/scripts/delta (revision 8d6db8cd) 
1#!/usr/bin/env perl
2#***************************************************************************
3#                                  _   _ ____  _
4#  Project                     ___| | | |  _ \| |
5#                             / __| | | | |_) | |
6#                            | (__| |_| |  _ <| |___
7#                             \___|\___/|_| \_\_____|
8#
9# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
10#
11# This software is licensed as described in the file COPYING, which
12# you should have received as part of this distribution. The terms
13# are also available at https://curl.se/docs/copyright.html.
14#
15# You may opt to use, copy, modify, merge, publish, distribute and/or sell
16# copies of the Software, and permit persons to whom the Software is
17# furnished to do so, under the terms of the COPYING file.
18#
19# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
20# KIND, either express or implied.
21#
22# SPDX-License-Identifier: curl
23#
24###########################################################################
25
26# Display changes done in the repository from [tag] until now.
27#
28# Uses git for repo data.
29# Uses docs/THANKS and RELEASE-NOTES for current status.
30#
31# In the git clone root, invoke 'scripts/delta [release tag]'
32
33$start = $ARGV[0];
34
35if($start eq "-h") {
36    print "Usage: summary [tag]\n";
37    exit;
38}
39elsif($start eq "") {
40    $start = `git tag --sort=taggerdate | grep "^curl-" | tail -1`;
41    chomp $start;
42}
43
44$commits = `git log --oneline $start.. | wc -l`;
45$committers = `git shortlog -s $start.. | wc -l`;
46$bcommitters = `git shortlog -s $start | wc -l`;
47
48$acommits = `git log --oneline | wc -l`;
49$acommitters = `git shortlog -s | wc -l`;
50
51# delta from now compared to before
52$ncommitters = $acommitters - $bcommitters;
53
54# number of contributors right now
55$acontribs = `./scripts/contrithanks.sh | grep -c '^[^ ]'`;
56# number when the tag was set
57$bcontribs = `git show $start:docs/THANKS | grep -c '^[^ ]'`;
58# delta
59$contribs = $acontribs - $bcontribs;
60
61# number of setops:
62sub setopts {
63    my ($f)=@_;
64    open(H, "$f");
65    my $opts;
66    while(<H>) {
67        if(/^  CURLOPT(|DEPRECATED)\(/ && ($_ !~ /OBSOLETE/))  {
68            $opts++;
69        }
70    }
71    close(H);
72    return $opts;
73}
74$asetopts = setopts("<include/curl/curl.h");
75$bsetopts = setopts("git show $start:include/curl/curl.h|");
76$nsetopts = $asetopts - $bsetopts;
77
78# Number of command line options:
79$aoptions=`grep -c '{"....--' src/tool_listhelp.c`;
80$boptions=`git show $start:src/tool_listhelp.c 2>/dev/null | grep -c '{"....--'`;
81$noptions=$aoptions - $boptions;
82
83# current local branch
84$branch=`git rev-parse --abbrev-ref HEAD 2>/dev/null`;
85chomp $branch;
86# Number of files in git
87$afiles=`git ls-files | wc -l`;
88$deletes=`git diff-tree --diff-filter=A -r --summary origin/$branch $start 2>/dev/null | wc -l`;
89$creates=`git diff-tree --diff-filter=D -r --summary origin/$branch $start 2>/dev/null| wc -l`;
90
91# Time since that tag
92$tagged=`git for-each-ref --format="%(refname:short) | %(taggerdate:unix)" refs/tags/* | grep ^$start | cut "-d|" -f2`; # Unix timestamp
93$taggednice=`git for-each-ref --format="%(refname:short) | %(creatordate)" refs/tags/* | grep ^$start | cut '-d|' -f2`; # human readable time
94chomp $taggednice;
95$now=`date +%s`;
96$elapsed=$now - $tagged; # number of seconds since tag
97$total=$now - `date -d 19980320 +%s`;
98
99# Number of public functions in libcurl
100$apublic=`git grep ^CURL_EXTERN -- include/curl | wc -l`;
101$bpublic=`git grep ^CURL_EXTERN $start -- include/curl | wc -l`;
102$public = $apublic - $bpublic;
103
104# diffstat
105$diffstat=`git diff --stat $start.. | tail -1`;
106if($diffstat =~ /^ *(\d+) files changed, (\d+) insertions\(\+\), (\d+)/) {
107    ($fileschanged, $insertions, $deletions)=($1, $2, $3);
108}
109
110# Changes/bug-fixes currently logged
111open(F, "<RELEASE-NOTES");
112while(<F>) {
113    if($_ =~ /following changes:/) {
114        $mode=1;
115    }
116    elsif($_ =~ /following bugfixes:/) {
117        $mode=2;
118    }
119    elsif($_ =~ /known bugs:/) {
120        $mode=3;
121    }
122    elsif($_ =~ /like these:/) {
123        $mode=4;
124    }
125    if($_ =~ /^ o /) {
126        if($mode == 1) {
127            $numchanges++;
128        }
129        elsif($mode == 2) {
130            $numbugfixes++;
131        }
132    }
133    if(($mode == 4) && ($_ =~ /^  \((\d+) contributors/)) {
134        $numcontributors = $1;
135    }
136}
137close(F);
138
139########################################################################
140# Produce the summary
141
142print "== Since $start $taggednice ==\n";
143my $days = $elapsed / 3600 / 24;
144printf "Elapsed time:                   %.1f days (total %d)\n",
145    $days, $total / 3600 / 24;
146printf "Commits:                        %d (total %d)\n",
147    $commits, $acommits;
148printf "Commit authors:                 %d, %d new (total %d)\n",
149    $committers, $ncommitters, $acommitters;
150printf "Contributors:                   %d, %d new (total %d)\n",
151    $numcontributors, $contribs, $acontribs;
152printf "New public functions:           %d (total %d)\n",
153    $public, $apublic;
154printf "New curl_easy_setopt() options: %d (total %d)\n",
155    $nsetopts, $asetopts;
156printf "New command line options:       %d (total %d)\n",
157    $noptions, $aoptions;
158printf "Changes logged:                 %d\n", $numchanges;
159printf "Bugfixes logged:                %d (%.2f per day)\n",
160    $numbugfixes, $numbugfixes / $days;
161printf "Added files:                    %d (total %d)\n",
162    $creates, $afiles;
163printf "Deleted files:                  %d (delta: %d)\n", $deletes,
164    $creates - $deletes;
165print "Diffstat:$diffstat" if(!$fileschanged);
166printf "Files changed:                  %d (%.2f%%)\n", $fileschanged, $fileschanged*100/$afiles;
167printf "Lines inserted:                 %d\n", $insertions;
168printf "Lines deleted:                  %d (delta: %d)\n", $deletions,
169    $insertions - $deletions;
170