feeds: add option to force feed update despite modified files

Implement a new flag "-f" for the feeds update command which causes the
script to fall back to a more agressive git update strategy in case there
are locally modified files in the feeds directory.

Signed-off-by: Jo-Philipp Wich <jo@mein.io>

diff --git a/scripts/feeds b/scripts/feeds
index 83007f5e167e21edd3a84123f3d3b630c004ec07..3016eac92d087b0f6b30e56dfde152427b812832 100755 (executable)
--- a/scripts/feeds
+++ b/scripts/feeds
@@ -129,6 +129,7 @@ my %update_method = (
                'init_branch'   => "git clone --depth 1 --branch '%s' '%s' '%s'",
                'init_commit'   => "git clone '%s' '%s' && cd '%s' && git checkout -b '%s' '%s' && cd -",
                'update'        => "git pull --ff",
+               'update_force'  => "git pull --ff || (git reset --hard HEAD; git pull --ff; exit 1)",
                'controldir'    => ".git",
                'revision'      => "git rev-parse --short HEAD | tr -d '\n'"},
        'src-git-full' => {
@@ -136,6 +137,7 @@ my %update_method = (
                'init_branch'   => "git clone --branch '%s' '%s' '%s'",
                'init_commit'   => "git clone '%s' '%s' && cd '%s' && git checkout -b '%s' '%s' && cd -",
                'update'        => "git pull --ff",
+               'update_force'  => "git pull --ff || (git reset --hard HEAD; git pull --ff; exit 1)",
                'controldir'    => ".git",
                'revision'      => "git rev-parse --short HEAD | tr -d '\n'"},
        'src-gitsvn' => {
@@ -160,11 +162,12 @@ my %update_method = (
 # src-git: pull broken
 # src-cpy: broken if `basename $src` != $name
 
-sub update_feed_via($$$$) {
+sub update_feed_via($$$$$) {
        my $type = shift;
        my $name = shift;
        my $src = shift;
        my $relocate = shift;
+       my $force = shift;
 
        my $m = $update_method{$type};
        my $localpath = "./feeds/$name";
@@ -185,7 +188,11 @@ sub update_feed_via($$$$) {
        } elsif ($m->{'init_commit'} and $commit) {
                # in case git hash has been provided don't update the feed
        } else {
-               system("cd '$safepath'; $m->{'update'}") == 0 or return 1;
+               my $update_cmd = $m->{'update'};
+               if ($force && exists $m->{'update_force'}) {
+                       $update_cmd = $m->{'update_force'};
+               }
+               system("cd '$safepath'; $update_cmd") == 0 or return 1;
        }
 
        return 0;
@@ -663,13 +670,15 @@ sub uninstall {
        return 0;
 }
 
-sub update_feed($$$$)
+sub update_feed($$$$$)
 {
        my $type=shift;
        my $name=shift;
        my $src=shift;
        my $perform_update=shift;
+       my $force_update=shift;
        my $force_relocate=update_location( $name, "@$src" );
+       my $rv=0;
 
        if( $force_relocate ) {
                warn "Source of feed $name has changed, replacing copy\n";
@@ -682,9 +691,16 @@ sub update_feed($$$$)
                my $failed = 1;
                foreach my $feedsrc (@$src) {
                        warn "Updating feed '$name' from '$feedsrc' ...\n";
-                       next unless update_feed_via($type, $name, $feedsrc, $force_relocate) == 0;
+                       if (update_feed_via($type, $name, $feedsrc, $force_relocate, $force_update) != 0) {
+                               if ($force_update) {
+                                       $rv=1;
+                                       $failed=0;
+                                       warn "failed, ignore.\n";
+                                       next;
+                               }
+                               last;
+                       }
                        $failed = 0;
-                       last;
                }
                $failed and do {
                        warn "failed.\n";
@@ -696,7 +712,7 @@ sub update_feed($$$$)
                warn "failed.\n";
                return 1;
        };
-       return 0;
+       return $rv;
 }
 
 sub update {
@@ -708,7 +724,7 @@ sub update {
        $ENV{SCAN_COOKIE} = $$;
        $ENV{OPENWRT_VERBOSE} = 's';
 
-       getopts('ahi', \%opts);
+       getopts('ahif', \%opts);
 
        if ($opts{h}) {
                usage();
@@ -728,7 +744,7 @@ sub update {
        if ( ($#ARGV == -1) or $opts{a}) {
                foreach my $feed (@feeds) {
                        my ($type, $name, $src) = @$feed;
-                       update_feed($type, $name, $src, $perform_update) == 0 or $failed=1;
+                       update_feed($type, $name, $src, $perform_update, $opts{f}) == 0 or $failed=1;
                }
        } else {
                while ($feed_name = shift @ARGV) {
@@ -737,7 +753,7 @@ sub update {
                                if($feed_name ne $name) {
                                        next;
                                }
-                               update_feed($type, $name, $src, $perform_update) == 0 or $failed=1;
+                               update_feed($type, $name, $src, $perform_update, $opts{f}) == 0 or $failed=1;
                        }
                }
        }
@@ -795,6 +811,7 @@ Commands:
        Options:
            -a :           Update all feeds listed within feeds.conf. Otherwise the specified feeds will be updated.
            -i :           Recreate the index only. No feed update from repository is performed.
+           -f :           Force updating feeds even if there are changed, uncommitted files.
 
        clean:             Remove downloaded/generated files.