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implemented mr config
[code/myrepos.git] / mr
diff --git a/mr b/mr
index 04a5cbf72f8c55bde7d5c05f839f0411eb72c6f0..235c17518ad546c868086b8dcb73e931d7c95794 100755 (executable)
--- a/mr
+++ b/mr
@@ -18,6 +18,8 @@ B<mr> [options] diff
 
 B<mr> [options] log
 
+B<mr> [options] config section [parameter=[value] ...]
+
 B<mr> [options] action [params ...]
 
 =head1 DESCRIPTION
@@ -74,6 +76,15 @@ Show the commit log.
 
 List the repositories that mr will act on.
 
+=item config
+
+Modifies the mrconfig file. The next parameter is the name of the section
+to add or modify, and it is followed by one or more instances of
+"parameter=value". Use "parameter=" to remove a parameter. For example,
+to register a new svn repository in src/foo:
+
+  mr config src/foo checkout="svn co svn://example.com/foo/trunk"
+
 =item help
 
 Displays this help.
@@ -166,6 +177,14 @@ If the "chain" parameter is set and its command returns nonzero, then B<mr>
 will try to load a .mrconfig file from the root of the repository. (You
 should avoid chaining from repositories with untrusted committers.)
 
+=item deleted
+
+If the "deleted" parameter is set and its command returns nonzero, then
+B<mr> will treat the repository as deleted. It won't ever actually delete
+the repository, but it will warn if it sees the repsoitory's directory.
+This is useful when one mrconfig file is shared amoung multiple machines,
+to keep track of and remember to delete old repositories.
+
 =item lib
 
 The "lib" parameter can specify some shell code that will be run before each
@@ -242,6 +261,23 @@ if (! exists $knownactions{$action}) {
 if ($action eq 'help') {
        exec($config{''}{DEFAULT}{help});
 }
+elsif ($action eq 'config') {
+       if (@ARGV < 2) {
+               die "mr config: not enough parameters\n";
+       }
+       my $section=shift;
+       my %fields;
+       foreach (@ARGV) {
+               if (/^([^=]+)=(.*)$/) {
+                       $fields{$1}=$2;
+               }
+               else {
+                       die "mr config: expected parameter=value, not \"$_\"\n";
+               }
+       }
+       modifyconfig($config, $section, %fields);
+       exit 0;
+}
 
 # work out what repos to act on
 my @repos;
@@ -284,7 +320,23 @@ sub action {
        my ($action, $dir, $topdir, $subdir) = @_;
        
        my $lib= exists $config{$topdir}{$subdir}{lib} ?
-                       $config{$topdir}{$subdir}{lib} : "";
+                       $config{$topdir}{$subdir}{lib}."\n" : "";
+
+       if (exists $config{$topdir}{$subdir}{deleted}) {
+               if (! -d $dir) {
+                       next;
+               }
+               else {
+                       my $test="set -e;".$lib.$config{$topdir}{$subdir}{deleted};
+                       print "mr $action: running deleted test >>$test<<\n" if $verbose;
+                       my $ret=system($test);
+                       if ($ret >> 8 == 0) {
+                               print STDERR "mr error: $dir should be deleted yet still exists\n\n";
+                               push @failed, $dir;
+                               return;
+                       }
+               }
+       }
 
        if ($action eq 'checkout') {
                if (-d $dir) {
@@ -304,7 +356,7 @@ sub action {
 
        if (exists $config{$topdir}{$subdir}{skip}) {
                my $test="set -e;".$lib.$config{$topdir}{$subdir}{skip};
-               print "mr $action: running skip test $test\n" if $verbose;
+               print "mr $action: running skip test >>$test<<\n" if $verbose;
                my $ret=system($test);
                if ($ret >> 8 == 0) {
                        print "mr $action: $dir skipped per config file\n" if $verbose;
@@ -323,15 +375,15 @@ sub action {
        }
        else {
                if (! $nochdir) {
-                       print "mr $action: $dir\n";
+                       print "mr $action: $topdir$subdir\n";
                }
                else {
-                       print "mr $action: $dir (in subdir $directory)\n";
+                       print "mr $action: $topdir$subdir (in subdir $directory)\n";
                }
                my $command="set -e; ".$lib.
-                       "my_action(){ $config{$topdir}{$subdir}{$action} ; }; my_action ".
+                       "my_action(){ $config{$topdir}{$subdir}{$action}\n }; my_action ".
                        join(" ", map { s/\//\/\//g; s/"/\"/g; '"'.$_.'"' } @ARGV);
-               print STDERR "mr $action: running $command\n" if $verbose;
+               print STDERR "mr $action: running >>$command<<\n" if $verbose;
                my $ret=system($command);
                if ($ret != 0) {
                        print STDERR "mr $action: failed ($ret)\n" if $verbose;
@@ -427,8 +479,8 @@ sub loadconfig {
                        my $value=$2;
 
                        # continuation line
-                       while ($value=~/(.*)\\$/) {
-                               $value=$1.<$in>;
+                       while ($value=~/(.*)\\$/s) {
+                               $value=$1."\n".<$in>;
                                chomp $value;
                        }
 
@@ -445,7 +497,7 @@ sub loadconfig {
                                $alias{$parameter}=$value;
                        }
                        elsif ($parameter eq 'lib') {
-                               $config{$dir}{$section}{lib}.=$value." ; ";
+                               $config{$dir}{$section}{lib}.=$value."\n";
                        }
                        else {
                                $config{$dir}{$section}{$parameter}=$value;
@@ -469,6 +521,85 @@ sub loadconfig {
        }
 }
 
+sub modifyconfig {
+       my $f=shift;
+       # the section to modify or add
+       my $targetsection=shift;
+       # fields to change in the section
+       # To remove a field, set its value to "".
+       my %changefields=@_;
+
+       my @lines;
+       if (-e $f) {
+               open(my $in, "<", $f) || die "mr: open $f: $!\n";
+               @lines=<$in>;
+               close $in;
+       }
+
+       my $section;
+       my @out;
+       while (@lines) {
+               $_=shift(@lines);
+
+               if (/^\s*\#/ || /^\s*$/) {
+                       push @out, $_;
+               }
+               elsif (/^\s*\[([^\]]*)\]\s*$/) {
+                       if (defined $section && 
+                           $section eq $targetsection) {
+                               my @blanks;
+                               while ($out[$#out] =~ /^\s*$/) {
+                                       unshift @blanks, pop @out;
+                               }
+                               foreach my $field (sort keys %changefields) {
+                                       if (length $changefields{$field}) {
+                                               push @out, "$field = $changefields{$field}\n";
+                                       }
+                               }
+                               push @out, @blanks;
+                       }
+
+                       $section=$1;
+
+                       push @out, $_;
+               }
+               elsif (/^\s*(\w+)\s*=\s(.*)/) {
+                       my $parameter=$1;
+                       my $value=$2;
+
+                       # continuation line
+                       while ($value=~/(.*\\)$/s) {
+                               $value=$1."\n".shift(@lines);
+                               chomp $value;
+                       }
+
+                       if ($section eq $targetsection) {
+                               if (exists $changefields{$parameter}) {
+                                       if (length $changefields{$parameter}) {
+                                               $value=$changefields{$parameter};
+                                       }
+                                       delete $changefields{$parameter};
+                               }
+                       }
+
+                       push @out, "$parameter = $value\n";
+               }
+       }
+
+       if (%changefields) {
+               push @out, "\n[$targetsection]\n";
+               foreach my $field (sort keys %changefields) {
+                       if (length $changefields{$field}) {
+                               push @out, "$field = $changefields{$field}\n";
+                       }
+               }
+       }
+
+       open(my $out, ">", $f) || die "mr: write $f: $!\n";
+       print $out @out;
+       close $out;     
+}
+
 # Finally, some useful actions that mr knows about by default.
 # These can be overridden in ~/.mrconfig.
 __DATA__
@@ -478,79 +609,79 @@ __DATA__
        ls = list
 
 [DEFAULT]
-lib = \
-       error() { \
-               echo "mr: $@" >&2; \
-               exit 1; \
+lib =                                                  \
+       error() {                                       \
+               echo "mr: $@" >&2                       \
+               exit 1                                  \
        }
 
-update = \
-       if [ -d "$MR_REPO"/.svn ]; then \
-               svn update "$@"; \
-       elif [ -d "$MR_REPO"/.git ]; then \
-               git pull origin master "$@"; \
-       elif [ -d "$MR_REPO"/.bzr ]; then \
-               bzr merge "$@"; \
-       elif [ -d "$MR_REPO"/CVS ]; then \
-               cvs update "$@"; \
-       else \
-               error "unknown repo type"; \
+update =                                               \
+       if [ -d "$MR_REPO"/.svn ]; then                 \
+               svn update "$@"                         \
+       elif [ -d "$MR_REPO"/.git ]; then               \
+               git pull origin master "$@"             \
+       elif [ -d "$MR_REPO"/.bzr ]; then               \
+               bzr merge "$@"                          \
+       elif [ -d "$MR_REPO"/CVS ]; then                \
+               cvs update "$@"                         \
+       else                                            \
+               error "unknown repo type"               \
        fi
-status = \
-       if [ -d "$MR_REPO"/.svn ]; then \
-               svn status "$@"; \
-       elif [ -d "$MR_REPO"/.git ]; then \
-               git status "$@" || true; \
-       elif [ -d "$MR_REPO"/.bzr ]; then \
-               bzr status "$@"; \
-       elif [ -d "$MR_REPO"/CVS ]; then \
-               cvs status "$@"; \
-       else \
-               error "unknown repo type"; \
+status =                                               \
+       if [ -d "$MR_REPO"/.svn ]; then                 \
+               svn status "$@"                         \
+       elif [ -d "$MR_REPO"/.git ]; then               \
+               git status "$@" || true                 \
+       elif [ -d "$MR_REPO"/.bzr ]; then               \
+               bzr status "$@"                         \
+       elif [ -d "$MR_REPO"/CVS ]; then                \
+               cvs status "$@"                         \
+       else                                            \
+               error "unknown repo type"               \
        fi
-commit = \
-       if [ -d "$MR_REPO"/.svn ]; then \
-               svn commit "$@"; \
-       elif [ -d "$MR_REPO"/.git ]; then \
-               git commit -a "$@" && git push --all; \
-       elif [ -d "$MR_REPO"/.bzr ]; then \
-               bzr commit "$@" && bzr push; \
-       elif [ -d "$MR_REPO"/CVS ]; then \
-               cvs commit "$@"; \
-       else \
-               error "unknown repo type"; \
+commit =                                               \
+       if [ -d "$MR_REPO"/.svn ]; then                 \
+               svn commit "$@"                         \
+       elif [ -d "$MR_REPO"/.git ]; then               \
+               git commit -a "$@" && git push --all    \
+       elif [ -d "$MR_REPO"/.bzr ]; then               \
+               bzr commit "$@" && bzr push             \
+       elif [ -d "$MR_REPO"/CVS ]; then                \
+               cvs commit "$@"                         \
+       else                                            \
+               error "unknown repo type"               \
        fi
-diff = \
-       if [ -d "$MR_REPO"/.svn ]; then \
-               svn diff "$@"; \
-       elif [ -d "$MR_REPO"/.git ]; then \
-               git diff "$@"; \
-       elif [ -d "$MR_REPO"/.bzr ]; then \
-               bzr diff "$@"; \
-       elif [ -d "$MR_REPO"/CVS ]; then \
-               cvs diff "$@"; \
-       else \
-               error "unknown repo type"; \
+diff =                                                 \
+       if [ -d "$MR_REPO"/.svn ]; then                 \
+               svn diff "$@"                           \
+       elif [ -d "$MR_REPO"/.git ]; then               \
+               git diff "$@"                           \
+       elif [ -d "$MR_REPO"/.bzr ]; then               \
+               bzr diff "$@"                           \
+       elif [ -d "$MR_REPO"/CVS ]; then                \
+               cvs diff "$@"                           \
+       else                                            \
+               error "unknown repo type"               \
        fi
-log = \
-       if [ -d "$MR_REPO"/.svn ]; then \
-               svn log"$@"; \
-       elif [ -d "$MR_REPO"/.git ]; then \
-               git log "$@"; \
-       elif [ -d "$MR_REPO"/.bzr ]; then \
-               bzr log "$@"; \
-       elif [ -d "$MR_REPO"/CVS ]; then \
-               cvs log "$@"; \
-       else \
-               error "unknown repo type"; \
+log =                                                  \
+       if [ -d "$MR_REPO"/.svn ]; then                 \
+               svn log"$@"                             \
+       elif [ -d "$MR_REPO"/.git ]; then               \
+               git log "$@"                            \
+       elif [ -d "$MR_REPO"/.bzr ]; then               \
+               bzr log "$@"                            \
+       elif [ -d "$MR_REPO"/CVS ]; then                \
+               cvs log "$@"                            \
+       else                                            \
+               error "unknown repo type"               \
        fi
 list = true
-
-help = \
-       if [ ! -e "$MR_PATH" ]; then \
-               error "cannot find program path";\
-       fi; \
-       (pod2man -c mr "$MR_PATH" | man -l -) || \
+config = 
+help =                                                 \
+       if [ ! -e "$MR_PATH" ]; then                    \
+               error "cannot find program path"        \
+       fi                                              \
+       (pod2man -c mr "$MR_PATH" | man -l -) ||        \
                error "pod2man or man failed"
 
 ed = echo "A horse is a horse, of course, of course.."