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1 | #!/usr/bin/perl -w |
2 | |
3 | |
4 | # p4genpatch - Generate a perl patch from the repository |
5 | |
6 | # Usage: $0 -h |
7 | |
8 | # andreas.koenig@anima.de |
9 | |
10 | use strict; |
11 | use File::Temp qw(tempdir); |
12 | use File::Compare; |
13 | use Time::Local; |
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14 | use Getopt::Long; |
15 | use Cwd qw(cwd); |
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16 | |
17 | sub correctmtime ($$$); |
18 | sub Usage (); |
19 | |
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20 | $0 =~ s|^.*[\\/]||; |
21 | my $VERSION = '0.05'; |
22 | my $TOPDIR = cwd(); |
23 | my @P4opt; |
24 | our %OPT = ( "d" => "u", b => "//depot/perl", "D" => "diff" ); |
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25 | Getopt::Long::Configure("no_ignore_case"); |
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26 | GetOptions(\%OPT, "b=s", "p=s", "d=s", "D=s", "h", "v", "V") or die Usage; |
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27 | print Usage and exit if $OPT{h}; |
28 | print "$VERSION\n" and exit if $OPT{V}; |
29 | die Usage unless @ARGV == 1; |
30 | |
31 | for my $p4opt (qw(p)) { |
32 | push @P4opt, "-$p4opt $OPT{$p4opt}" if $OPT{$p4opt}; |
33 | } |
34 | |
35 | my $system = "p4 @P4opt describe -s @ARGV |"; |
36 | open my $p4, $system or die "Could not run $system"; |
37 | my @action; |
38 | while (<$p4>) { |
39 | print; |
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40 | next unless m|($OPT{b})|; |
41 | my($prefix) = $1; |
42 | $prefix =~ s|/[^/]+$||; # up to the last "/" in the match is to be stripped |
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43 | if (my($file,$action) = m|^\.\.\. (//depot.*)\s(\w+)$|) { |
44 | next if $action eq "delete"; |
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45 | push @action, [$action, $file, $prefix]; |
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46 | } |
47 | } |
48 | close $p4; |
49 | |
50 | my $tempdir; |
51 | print "Differences ...\n"; |
52 | for my $a (@action) { |
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53 | $tempdir ||= tempdir( "tmp-XXXX", CLEANUP => 1, TMPDIR => 1 ); |
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54 | my($action,$file,$prefix) = @$a; |
55 | my($path,$basename,$number) = $file =~ m|\Q$prefix\E/(.+/)?([^/]+)#(\d+)|; |
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56 | my($prevfile) = $file =~ m|^(.+)#\d+\z|; |
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57 | die "Panic: Could not parse file[$file]" unless $number; |
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58 | $path = "" unless defined $path; |
59 | my($d1,$d2,$prev); |
60 | $prev = $number-1; |
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61 | $prevfile .= "#$prev"; |
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62 | if ($prev==0 or $action =~ /^(add|branch)$/) { |
63 | $d1 = "/dev/null"; |
64 | } elsif ($action =~ /^(edit|integrate)$/) { |
65 | $d1 = "$path$basename#$prev"; |
66 | warn "==> $d1 <==\n" if $OPT{v}; |
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67 | my $system = "p4 @P4opt print -o $tempdir/$d1 $prevfile"; |
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68 | my $status = `$system`; |
69 | if ($?) { |
70 | warn "$0: system[$system] failed, status[$?]\n"; |
71 | next; |
72 | } |
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73 | chmod 0644, "$tempdir/$d1"; |
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74 | if (my($prevch) = $status =~ / \s change \s (\d+) \s /x) { |
75 | my $oldd1 = $d1; |
76 | $d1 .= "~$prevch~"; |
77 | rename "$tempdir/$oldd1", "$tempdir/$d1"; |
78 | } |
79 | } else { |
80 | die "Unknown action[$action]"; |
81 | } |
82 | $d2 = "$path$basename"; |
83 | warn "==> $d2#$number <==\n" if $OPT{v}; |
84 | my $system = "p4 @P4opt print -o $tempdir/$d2 $file"; |
85 | # warn "system[$system]"; |
86 | my $type = `$system`; |
87 | if ($?) { |
88 | warn "$0: `$system` failed, status[$?]\n"; |
89 | next; |
90 | } |
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91 | chmod 0644, "$tempdir/$d2"; |
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92 | $type =~ m|^//.*\((.+)\)$| or next; |
93 | $type = $1; |
94 | if (File::Compare::compare("$tempdir/$d1", "$tempdir/$d2")) { |
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95 | print "\n==== $file ($type) ====\n"; |
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96 | unless ($type =~ /text/) { |
97 | next; |
98 | } |
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99 | print "Index: $path$basename\n"; |
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100 | my @filelog = `p4 @P4opt filelog $file`; |
101 | correctmtime(\@filelog,$prev,"$tempdir/$d1"); |
102 | correctmtime(\@filelog,$number,"$tempdir/$d2"); |
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103 | chdir $tempdir or warn "Could not chdir '$tempdir': $!"; |
104 | $system = qq[$OPT{D} -$OPT{d} "$d1" "$d2"]; |
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105 | system($system); # no return check because diff doesn't always return 0 |
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106 | chdir $TOPDIR or warn "Could not chdir '$TOPDIR': $!"; |
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107 | } |
108 | for ("$tempdir/$d1","$tempdir/$d2") { |
109 | unlink or warn "Could not unlink $_: $!" if -f; |
110 | } |
111 | } |
112 | print "End of Patch.\n"; |
113 | |
114 | sub correctmtime ($$$) { |
115 | my($filelog,$nr,$file) = @_; |
116 | for my $line (@$filelog) { |
117 | my($rev,$change,$action,$date) = |
118 | $line =~ m{ ^ \.\.\. \s |
119 | \# |
120 | (\d+) # rev |
121 | \s change \s |
122 | (\d+) # change |
123 | \s (\w+) \s # action |
124 | on \s (\S+) # date |
125 | }x or next; |
126 | # warn "rev[$rev]"; |
127 | next unless $rev == $nr; |
128 | my(@date) = split m|/|, $date; |
129 | $date[0] -= 1900; |
130 | $date[1]--; |
131 | my $time = timelocal(0,0,0,reverse @date); |
132 | utime $time, $time, $file; |
133 | last; |
134 | } |
135 | } |
136 | |
137 | sub Usage () { |
138 | qq{Usage: $0 [OPTIONS] patchnumber |
139 | |
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140 | -p host:port p4 port (e.g. myhost:1666) |
141 | -d diffopt option to pass to diff(1) |
142 | -D diff diff(1) to use |
143 | -b branch(es) which branches to include (regex); everything up |
144 | to the last slash of matched portion of path is |
145 | stripped on local copy (default: //depot/perl) |
146 | -v verbose |
147 | -h print this help and exit |
148 | -V print version number and exit |
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149 | |
150 | Fetches all required files from the repository, puts them into a |
151 | temporary directory with sensible names and sensible modification |
152 | times and composes a patch to STDOUT using external diff command. |
153 | Requires repository access. |
154 | |
155 | Examples: |
156 | perl $0 12345 | gzip -c > 12345.gz |
157 | perl $0 -dc 12345 > change-12345.patch |
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158 | perl $0 -b //depot/maint-5.6/perl -v 8571 > 8571 |
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159 | }; |
160 | } |