Commit | Line | Data |
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01e293f1 | 1 | #!/usr/bin/perl |
d26c7dfd WD |
2 | # This script is used to turn one or more of the "patch/*" branches |
3 | # into one or more diffs in the "patches" directory. Pass the option | |
4 | # --gen if you want generated files in the diffs. Pass the name of | |
5 | # one or more diffs if you want to just update a subset of all the | |
6 | # diffs. | |
7 | ||
8 | use strict; | |
01e293f1 | 9 | use warnings; |
f2b7b64d | 10 | use Getopt::Long; |
d26c7dfd | 11 | |
4da9fcd4 | 12 | my $patches_dir = 'patches'; |
f2b7b64d | 13 | my $tmp_dir = "patches.$$"; |
5250c3bc | 14 | my $make_gen_cmd = 'make -f prepare-source.mak conf && ./config.status && make gen'; |
f2b7b64d WD |
15 | |
16 | &Getopt::Long::Configure('bundling'); | |
17 | &usage if !&GetOptions( | |
56fc9f70 | 18 | 'branch|b=s' => \( my $master_branch = 'master' ), |
f2b7b64d | 19 | 'skip-check' => \( my $skip_branch_check ), |
c202b4fa | 20 | 'shell|s' => \( my $launch_shell ), |
f2b7b64d WD |
21 | 'gen:s' => \( my $incl_generated_files ), |
22 | 'help|h' => \( my $help_opt ), | |
23 | ); | |
24 | &usage if $help_opt; | |
25 | ||
26 | if (defined $incl_generated_files) { | |
27 | $patches_dir = $incl_generated_files if $incl_generated_files ne ''; | |
4da9fcd4 | 28 | $incl_generated_files = 1; |
4da9fcd4 WD |
29 | } |
30 | ||
31 | die "No '$patches_dir' directory was found.\n" unless -d $patches_dir; | |
d26c7dfd WD |
32 | die "No '.git' directory present in the current dir.\n" unless -d '.git'; |
33 | ||
c202b4fa WD |
34 | my($status, $is_clean, $starting_branch) = &check_git_status; |
35 | if (!$skip_branch_check && !$is_clean) { | |
36 | die "The checkout is not clean:\n", $status; | |
f2b7b64d WD |
37 | } |
38 | ||
350242c5 WD |
39 | my $master_commit; |
40 | open PIPE, '-|', "git log -1 --no-color $master_branch" or die $!; | |
41 | while (<PIPE>) { | |
42 | if (/^commit (\S+)/) { | |
43 | $master_commit = $1; | |
44 | last; | |
45 | } | |
46 | } | |
47 | close PIPE; | |
48 | die "Unable to determine commit hash for master branch: $master_branch\n" unless defined $master_commit; | |
49 | ||
67b9b26f WD |
50 | my @extra_files; |
51 | open(IN, '<', 'Makefile.in') or die "Couldn't open Makefile.in: $!\n"; | |
52 | while (<IN>) { | |
53 | if (s/^GENFILES=//) { | |
54 | while (s/\\$//) { | |
55 | $_ .= <IN>; | |
56 | } | |
57 | @extra_files = split(' ', $_); | |
58 | last; | |
59 | } | |
60 | } | |
d26c7dfd WD |
61 | close IN; |
62 | ||
d26c7dfd | 63 | if ($incl_generated_files) { |
f2b7b64d WD |
64 | die "'$tmp_dir' must not exist in the current directory.\n" if -e $tmp_dir; |
65 | mkdir($tmp_dir, 0700) or die "Unable to mkdir($tmp_dir): $!\n"; | |
5250c3bc | 66 | system "$make_gen_cmd && rsync -a @extra_files $tmp_dir/master/" and exit 1; |
d26c7dfd | 67 | } |
8a5ae84e | 68 | our $last_touch = time; |
d26c7dfd | 69 | |
56fc9f70 | 70 | my %patches; |
970ce063 WD |
71 | |
72 | # Start by finding all patches so that we can load all possible parents. | |
56fc9f70 | 73 | open(PIPE, '-|', 'git', 'branch', '-l') or die $!; |
d26c7dfd | 74 | while (<PIPE>) { |
56fc9f70 | 75 | if (m# patch/(.*)#) { |
a5e0bf35 | 76 | $patches{$1} = 1; |
d26c7dfd WD |
77 | } |
78 | } | |
79 | close PIPE; | |
80 | ||
a5e0bf35 WD |
81 | my @patches = sort keys %patches; |
82 | ||
97f04215 | 83 | my(%parent, %description); |
d26c7dfd | 84 | foreach my $patch (@patches) { |
56fc9f70 | 85 | my $branch = "patch/$patch"; |
97f04215 | 86 | my $desc = ''; |
56fc9f70 | 87 | open(PIPE, '-|', 'git', 'diff', '-U1000', "$master_branch...$branch", '--', "PATCH.$patch") or die $!; |
97f04215 | 88 | while (<PIPE>) { |
5288be3a WD |
89 | last if /^@@ /; |
90 | } | |
91 | while (<PIPE>) { | |
6a2456c5 | 92 | next unless s/^[ +]//; |
97f04215 | 93 | if (m#patch -p1 <patches/(\S+)\.diff# && $1 ne $patch) { |
56fc9f70 WD |
94 | my $parent = $parent{$patch} = $1; |
95 | if (!$patches{$parent}) { | |
96 | die "Parent of $patch is not a local branch: $parent\n"; | |
97 | } | |
97f04215 WD |
98 | } |
99 | $desc .= $_; | |
100 | } | |
56fc9f70 | 101 | close PIPE; |
97f04215 WD |
102 | $description{$patch} = $desc; |
103 | } | |
104 | ||
970ce063 WD |
105 | if (@ARGV) { |
106 | # Limit the list of patches to actually process based on @ARGV. | |
107 | @patches = ( ); | |
108 | foreach (@ARGV) { | |
56fc9f70 | 109 | s{^patch(es)?/} {}; |
970ce063 | 110 | s{\.diff$} {}; |
56fc9f70 WD |
111 | if (!$patches{$_}) { |
112 | die "Local branch not available for patch: $_\n"; | |
113 | } | |
970ce063 WD |
114 | push(@patches, $_); |
115 | } | |
116 | } | |
117 | ||
97f04215 WD |
118 | my %completed; |
119 | foreach my $patch (@patches) { | |
120 | next if $completed{$patch}++; | |
c202b4fa | 121 | last unless update_patch($patch); |
97f04215 WD |
122 | } |
123 | ||
124 | if ($incl_generated_files) { | |
f2b7b64d | 125 | system "rm -rf $tmp_dir"; |
97f04215 WD |
126 | } |
127 | ||
8a5ae84e | 128 | sleep 1 while $last_touch >= time; |
16e24c20 | 129 | system "git checkout $starting_branch" and exit 1; |
aa6865d7 | 130 | |
97f04215 WD |
131 | exit; |
132 | ||
133 | ||
134 | sub update_patch | |
135 | { | |
136 | my($patch) = @_; | |
137 | ||
138 | my $parent = $parent{$patch}; | |
350242c5 | 139 | my $based_on; |
97f04215 WD |
140 | if (defined $parent) { |
141 | unless ($completed{$parent}++) { | |
142 | update_patch($parent); | |
143 | } | |
350242c5 | 144 | $based_on = $parent = "patch/$parent"; |
97f04215 | 145 | } else { |
56fc9f70 | 146 | $parent = $master_branch; |
350242c5 | 147 | $based_on = $master_commit; |
97f04215 WD |
148 | } |
149 | ||
d26c7dfd | 150 | print "======== $patch ========\n"; |
97f04215 | 151 | |
8a5ae84e | 152 | sleep 1 while $incl_generated_files && $last_touch >= time; |
56fc9f70 | 153 | system "git checkout patch/$patch" and return 0; |
18fa9129 | 154 | |
350242c5 | 155 | my $ok = system("git merge $based_on") == 0; |
c202b4fa | 156 | if (!$ok || $launch_shell) { |
350242c5 | 157 | print qq|"git merge $based_on" incomplete -- please fix.\n| if !$ok; |
8d321144 | 158 | $ENV{PS1} = "[$parent] patch/$patch: "; |
c202b4fa WD |
159 | while (1) { |
160 | if (system($ENV{SHELL}) != 0) { | |
161 | print "Abort? [n/y] "; | |
162 | $_ = <STDIN>; | |
163 | next unless /^y/i; | |
164 | return 0; | |
165 | } | |
166 | ($status, $is_clean) = &check_git_status; | |
167 | last if $is_clean; | |
168 | print $status; | |
169 | } | |
8d321144 | 170 | } |
d26c7dfd | 171 | |
c202b4fa | 172 | open(OUT, '>', "$patches_dir/$patch.diff") or die $!; |
350242c5 | 173 | print OUT $description{$patch}, "\nbased-on: $based_on\n"; |
c202b4fa | 174 | |
49ebb358 | 175 | if ($incl_generated_files) { |
5250c3bc | 176 | system "$make_gen_cmd && rsync -a @extra_files $tmp_dir/$patch/" and exit 1; |
d26c7dfd | 177 | } |
49ebb358 WD |
178 | $last_touch = time; |
179 | ||
350242c5 | 180 | open(PIPE, '-|', 'git', 'diff', $based_on) or die $!; |
49ebb358 WD |
181 | DIFF: while (<PIPE>) { |
182 | while (m{^diff --git a/PATCH}) { | |
183 | while (<PIPE>) { | |
184 | last if m{^diff --git a/}; | |
185 | } | |
186 | last DIFF if !defined $_; | |
187 | } | |
6a2456c5 | 188 | next if /^index /; |
49ebb358 | 189 | print OUT $_; |
d26c7dfd | 190 | } |
d26c7dfd WD |
191 | close PIPE; |
192 | ||
193 | if ($incl_generated_files) { | |
56fc9f70 WD |
194 | my $parent_dir; |
195 | if ($parent eq $master_branch) { | |
196 | $parent_dir = 'master'; | |
197 | } else { | |
198 | ($parent_dir) = $parent =~ m{([^/]+)$}; | |
199 | } | |
200 | open(PIPE, '-|', 'diff', '-up', "$tmp_dir/$parent_dir", "$tmp_dir/$patch") or die $!; | |
d26c7dfd | 201 | while (<PIPE>) { |
f2b7b64d WD |
202 | s#^(diff -up) $tmp_dir/[^/]+/(.*?) $tmp_dir/[^/]+/(.*)#$1 a/$2 b/$3#o; |
203 | s#^\Q---\E $tmp_dir/[^/]+/([^\t]+)\t.*#--- a/$1#o; | |
204 | s#^\Q+++\E $tmp_dir/[^/]+/([^\t]+)\t.*#+++ b/$1#o; | |
d26c7dfd WD |
205 | print OUT $_; |
206 | } | |
207 | close PIPE; | |
208 | } | |
209 | ||
210 | close OUT; | |
c202b4fa WD |
211 | |
212 | 1; | |
d26c7dfd | 213 | } |
f2b7b64d WD |
214 | |
215 | exit; | |
216 | ||
c202b4fa WD |
217 | sub check_git_status |
218 | { | |
219 | open(IN, '-|', 'git status') or die $!; | |
220 | my $status = join('', <IN>); | |
221 | close IN; | |
222 | my $is_clean = $status =~ /\nnothing to commit \(working directory clean\)/; | |
223 | my($starting_branch) = $status =~ /^# On branch (.+)\n/; | |
224 | ($status, $is_clean, $starting_branch); | |
225 | } | |
226 | ||
f2b7b64d WD |
227 | sub usage |
228 | { | |
229 | die <<EOT; | |
9ba4d44f WD |
230 | Usage: patch-update [OPTIONS] [patches/DIFF...] |
231 | ||
232 | Options: | |
233 | -b, --branch=BRANCH The master branch to merge into the patch/* branches. | |
234 | --gen[=DIR] Include generated files. Optional destination DIR | |
235 | arg overrides the default of using the "patches" dir. | |
236 | --skip-check Skip the check that ensures starting with a clean branch. | |
237 | -s, --shell Launch a shell for every patch/* branch updated, not | |
238 | just when a conflict occurs. | |
239 | -h, --help Output this help message. | |
f2b7b64d WD |
240 | EOT |
241 | } |