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ad7c54e13a
Followup to #14906, in which a nonexistent option was found in a man page. The xref script was designed to catch that, but I was too lax in my parsing: the option was documented using wrong syntax, and the script didn't catch it. Solution: do not allow *any* unrecognized cruft in the option description lines. And fix all improperly-written entries to conform to the rule: **--option**=*value(s)* Two asterisks around option, which must have two dashes. One asterisk around value(s). This is going to cause headaches for some people adding new options, but I don't think I can fix that: there are many factors that make an unparseable line. Adding 'hint' code would make the script even more complex than it is. I have to assume that our contributors are smart enough to look at surrounding context and figure out the right way to specify options. Signed-off-by: Ed Santiago <santiago@redhat.com>
623 lines
21 KiB
Perl
Executable File
623 lines
21 KiB
Perl
Executable File
#!/usr/bin/perl
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#
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# xref-helpmsgs-manpages - cross-reference --help options against man pages
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#
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package LibPod::CI::XrefHelpmsgsManpages;
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use v5.14;
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use utf8;
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use strict;
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use warnings;
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(our $ME = $0) =~ s|.*/||;
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our $VERSION = '0.1';
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# For debugging, show data structures using DumpTree($var)
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#use Data::TreeDumper; $Data::TreeDumper::Displayaddress = 0;
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# unbuffer output
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$| = 1;
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###############################################################################
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# BEGIN user-customizable section
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# Path to podman executable
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my $Default_Podman = './bin/podman';
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my $PODMAN = $ENV{PODMAN} || $Default_Podman;
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# Path to all doc files, including .rst and (down one level) markdown
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my $Docs_Path = 'docs/source';
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# Path to podman markdown source files (of the form podman-*.1.md)
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my $Markdown_Path = "$Docs_Path/markdown";
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# Global error count
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my $Errs = 0;
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# END user-customizable section
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###############################################################################
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use FindBin;
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###############################################################################
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# BEGIN boilerplate args checking, usage messages
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sub usage {
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print <<"END_USAGE";
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Usage: $ME [OPTIONS]
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$ME recursively runs 'podman --help' against
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all subcommands; and recursively reads podman-*.1.md files
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in $Markdown_Path, then cross-references that each --help
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option is listed in the appropriate man page and vice-versa.
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$ME invokes '\$PODMAN' (default: $Default_Podman).
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In the spirit of shoehorning functionality where it wasn't intended,
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$ME also checks the SEE ALSO section of each man page
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to ensure that references and links are properly formatted
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and valid.
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Exit status is zero if no inconsistencies found, one otherwise
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OPTIONS:
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-v, --verbose show verbose progress indicators
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-n, --dry-run make no actual changes
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--help display this message
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--version display program name and version
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END_USAGE
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exit;
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}
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# Command-line options. Note that this operates directly on @ARGV !
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our $debug = 0;
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our $verbose = 0;
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sub handle_opts {
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use Getopt::Long;
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GetOptions(
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'debug!' => \$debug,
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'verbose|v' => \$verbose,
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help => \&usage,
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version => sub { print "$ME version $VERSION\n"; exit 0 },
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) or die "Try `$ME --help' for help\n";
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}
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# END boilerplate args checking, usage messages
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###############################################################################
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############################## CODE BEGINS HERE ###############################
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# The term is "modulino".
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__PACKAGE__->main() unless caller();
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# Main code.
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sub main {
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# Note that we operate directly on @ARGV, not on function parameters.
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# This is deliberate: it's because Getopt::Long only operates on @ARGV
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# and there's no clean way to make it use @_.
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handle_opts(); # will set package globals
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# Fetch command-line arguments. Barf if too many.
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die "$ME: Too many arguments; try $ME --help\n" if @ARGV;
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my $help = podman_help();
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my $man = podman_man('podman');
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my $rst = podman_rst();
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xref_by_help($help, $man);
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xref_by_man($help, $man);
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xref_rst($help, $rst);
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exit !!$Errs;
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}
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###############################################################################
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# BEGIN cross-referencing
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##################
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# xref_by_help # Find keys in '--help' but not in man
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##################
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sub xref_by_help {
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my ($help, $man, @subcommand) = @_;
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for my $k (sort keys %$help) {
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if (exists $man->{$k}) {
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if (ref $help->{$k}) {
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xref_by_help($help->{$k}, $man->{$k}, @subcommand, $k);
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}
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# Otherwise, non-ref is leaf node such as a --option
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}
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else {
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my $man = $man->{_path} || 'man';
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warn "$ME: 'podman @subcommand --help' lists '$k', which is not in $man\n";
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++$Errs;
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}
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}
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}
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#################
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# xref_by_man # Find keys in man pages but not in --help
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#################
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#
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# In an ideal world we could share the functionality in one function; but
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# there are just too many special cases in man pages.
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#
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sub xref_by_man {
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my ($help, $man, @subcommand) = @_;
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# FIXME: this generates way too much output
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for my $k (grep { $_ ne '_path' } sort keys %$man) {
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if (exists $help->{$k}) {
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if (ref $man->{$k}) {
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xref_by_man($help->{$k}, $man->{$k}, @subcommand, $k);
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}
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}
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elsif ($k ne '--help' && $k ne '-h') {
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my $man = $man->{_path} || 'man';
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# Special case: podman-inspect serves dual purpose (image, ctr)
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my %ignore = map { $_ => 1 } qw(-l -s -t --latest --size --type);
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next if $man =~ /-inspect/ && $ignore{$k};
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# Special case: podman-diff serves dual purpose (image, ctr)
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my %diffignore = map { $_ => 1 } qw(-l --latest );
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next if $man =~ /-diff/ && $diffignore{$k};
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# Special case: the 'trust' man page is a mess
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next if $man =~ /-trust/;
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# Special case: '--net' is an undocumented shortcut
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next if $k eq '--net' && $help->{'--network'};
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# Special case: these are actually global options
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next if $k =~ /^--(cni-config-dir|runtime)$/ && $man =~ /-build/;
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# Special case: weirdness with Cobra and global/local options
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next if $k eq '--namespace' && $man =~ /-ps/;
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next if "@subcommand" eq 'system' && $k eq 'service';
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# Special case: podman completion is a hidden command
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next if $k eq 'completion';
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warn "$ME: 'podman @subcommand': $k in $man, but not --help\n";
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++$Errs;
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}
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}
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}
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##############
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# xref_rst # Cross-check *.rst files against help
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##############
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sub xref_rst {
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my ($help, $rst, @subcommand) = @_;
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# Cross-check against rst (but only subcommands, not options).
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# We key on $help because that is Absolute Truth: anything in podman --help
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# must be referenced in an rst (the converse is not true).
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for my $k (sort grep { $_ !~ /^-/ } keys %$help) {
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# Check for subcommands, if any (eg podman system -> connection -> add)
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if (ref $help->{$k}) {
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xref_rst($help->{$k}, $rst->{$k}, @subcommand, $k);
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}
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}
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}
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# END cross-referencing
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###############################################################################
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# BEGIN data gathering
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#################
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# podman_help # Parse output of 'podman [subcommand] --help'
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#################
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sub podman_help {
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my %help;
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open my $fh, '-|', $PODMAN, @_, '--help'
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or die "$ME: Cannot fork: $!\n";
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my $section = '';
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while (my $line = <$fh>) {
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# Cobra is blessedly consistent in its output:
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# Usage: ...
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# Available Commands:
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# ....
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# Options:
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# ....
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#
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# Start by identifying the section we're in...
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if ($line =~ /^Available\s+(Commands):/) {
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$section = lc $1;
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}
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elsif ($line =~ /^(Options):/) {
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$section = lc $1;
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}
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# ...then track commands and options. For subcommands, recurse.
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elsif ($section eq 'commands') {
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if ($line =~ /^\s{1,4}(\S+)\s/) {
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my $subcommand = $1;
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print "> podman @_ $subcommand\n" if $debug;
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# check that the same subcommand is not listed twice (#12356)
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if (exists $help{$subcommand}) {
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warn "$ME: 'podman @_ help' lists '$subcommand' twice\n";
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++$Errs;
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}
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$help{$subcommand} = podman_help(@_, $subcommand)
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unless $subcommand eq 'help'; # 'help' not in man
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}
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}
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elsif ($section eq 'options') {
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# Handle '--foo' or '-f, --foo'
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if ($line =~ /^\s{1,10}(--\S+)\s/) {
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print "> podman @_ $1\n" if $debug;
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$help{$1} = 1;
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}
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elsif ($line =~ /^\s{1,10}(-\S),\s+(--\S+)\s/) {
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print "> podman @_ $1, $2\n" if $debug;
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$help{$1} = $help{$2} = 1;
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}
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}
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}
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close $fh
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or die "$ME: Error running 'podman @_ --help'\n";
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return \%help;
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}
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################
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# podman_man # Parse contents of podman-*.1.md
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################
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sub podman_man {
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my $command = shift;
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my $subpath = "$Markdown_Path/$command.1.md";
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my $manpath = "$FindBin::Bin/../$subpath";
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print "** $subpath \n" if $debug;
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my %man = (_path => $subpath);
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open my $fh, '<', $manpath
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or die "$ME: Cannot read $manpath: $!\n";
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my $section = '';
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my @most_recent_flags;
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my $previous_subcmd = '';
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my $previous_flag = '';
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while (my $line = <$fh>) {
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chomp $line;
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next unless $line; # skip empty lines
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# .md files designate sections with leading double hash
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if ($line =~ /^##\s*(GLOBAL\s+)?OPTIONS/) {
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$section = 'flags';
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$previous_flag = '';
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}
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elsif ($line =~ /^###\s+\w+\s+OPTIONS/) {
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# podman image trust has sections for set & show
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$section = 'flags';
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$previous_flag = '';
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}
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elsif ($line =~ /^\#\#\s+(SUB)?COMMANDS/) {
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$section = 'commands';
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}
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elsif ($line =~ /^\#\#\s+SEE\s+ALSO/) {
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$section = 'see-also';
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}
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elsif ($line =~ /^\#\#[^#]/) {
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$section = '';
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}
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# This will be a table containing subcommand names, links to man pages.
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# The format is slightly different between podman.1.md and subcommands.
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elsif ($section eq 'commands') {
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# In podman.1.md
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if ($line =~ /^\|\s*\[podman-(\S+?)\(\d\)\]/) {
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# $1 will be changed by recursion _*BEFORE*_ left-hand assignment
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my $subcmd = $1;
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$man{$subcmd} = podman_man("podman-$1");
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}
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# In podman-<subcommand>.1.md
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elsif ($line =~ /^\|\s+(\S+)\s+\|\s+\[\S+\]\((\S+)\.1\.md\)/) {
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# $1 will be changed by recursion _*BEFORE*_ left-hand assignment
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my $subcmd = $1;
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if ($previous_subcmd gt $subcmd) {
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warn "$ME: $subpath:$.: '$previous_subcmd' and '$subcmd' are out of order\n";
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++$Errs;
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}
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$previous_subcmd = $subcmd;
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$man{$subcmd} = podman_man($2);
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}
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}
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# Options should always be of the form '**-f**' or '**\-\-flag**',
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# possibly separated by comma-space.
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elsif ($section eq 'flags') {
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# e.g. 'podman run --ip6', documented in man page, but nonexistent
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if ($line =~ /^not\s+implemented/i) {
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delete $man{$_} for @most_recent_flags;
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}
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@most_recent_flags = ();
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# As of PR #8292, all options are <h4> and anchored
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if ($line =~ s/^\#{4}\s+//) {
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# If option has long and short form, long must come first.
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# This is a while-loop because there may be multiple long
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# option names, e.g. --net/--network
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my $is_first = 1;
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while ($line =~ s/^\*\*(--[a-z0-9-]+)\*\*(,\s+)?//g) {
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my $flag = $1;
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$man{$flag} = 1;
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if ($flag lt $previous_flag && $is_first) {
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warn "$ME: $subpath:$.: $flag should precede $previous_flag\n";
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++$Errs;
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}
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$previous_flag = $flag if $is_first;
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push @most_recent_flags, $flag;
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# Further iterations of /g are allowed to be out of order,
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# e.g., it's OK for "--namespace, -ns" to precede --nohead
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$is_first = 0;
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}
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# Short form
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if ($line =~ s/^\*\*(-[a-zA-Z0-9])\*\*//) {
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my $flag = $1;
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$man{$flag} = 1;
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# Keep track of them, in case we see 'Not implemented' below
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push @most_recent_flags, $flag;
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}
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# Options with no '=whatever'
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next if !$line;
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# Anything remaining *must* be of the form '=<possibilities>'
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if ($line !~ /^=/) {
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warn "$ME: $subpath:$.: could not parse '$line' in option description\n";
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++$Errs;
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}
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# For some years it was traditional, albeit wrong, to write
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# **--foo**=*bar*, **-f**
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# The correct way is to add =*bar* at the end.
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if ($line =~ s/,\s\*\*(-[a-zA-Z])\*\*//) {
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$man{$1} = 1;
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warn "$ME: $subpath:$.: please rewrite as ', **$1**$line'\n";
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++$Errs;
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}
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# List of possibilities ('=*a* | *b*') must be space-separated
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if ($line =~ /\|/) {
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if ($line =~ /[^\s]\|[^\s]/) {
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# Sigh, except for this one special case
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if ($line !~ /SOURCE-VOLUME.*HOST-DIR.*CONTAINER-DIR/) {
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warn "$ME: $subpath:$.: values must be space-separated: '$line'\n";
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++$Errs;
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}
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}
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my $copy = $line;
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if ($copy =~ s/\**true\**//) {
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if ($copy =~ s/\**false\**//) {
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if ($copy !~ /[a-z]/) {
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warn "$ME: $subpath:$.: Do not enumerate true/false for boolean-only options\n";
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++$Errs;
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}
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}
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}
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}
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}
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}
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# It's easy to make mistakes in the SEE ALSO elements.
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elsif ($section eq 'see-also') {
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_check_seealso_links( "$subpath:$.", $line );
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}
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}
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close $fh;
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# Special case: the 'image trust' man page tries hard to cover both set
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# and show, which means it ends up not being machine-readable.
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if ($command eq 'podman-image-trust') {
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my %set = %man;
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my %show = %man;
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$show{$_} = 1 for qw(--raw -j --json);
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return +{ set => \%set, show => \%show }
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}
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return \%man;
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}
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################
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# podman_rst # Parse contents of docs/source/*.rst
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################
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sub podman_rst {
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my %rst;
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# Read all .rst files, looking for ":doc:`subcmd <target>` description"
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for my $rst (glob "$Docs_Path/*.rst") {
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open my $fh, '<', $rst
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or die "$ME: Cannot read $rst: $!\n";
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# The basename of foo.rst is usually, but not always, the name of
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# a podman subcommand. There are a few special cases:
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(my $command = $rst) =~ s!^.*/(.*)\.rst!$1!;
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my $subcommand_href = \%rst;
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if ($command eq 'Commands') {
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;
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}
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elsif ($command eq 'managecontainers') {
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$subcommand_href = $rst{container} //= { };
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}
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elsif ($command eq 'connection') {
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$subcommand_href = $rst{system}{connection} //= { };
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}
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else {
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$subcommand_href = $rst{$command} //= { };
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}
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my $previous_subcommand = '';
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while (my $line = <$fh>) {
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if ($line =~ /^:doc:`(\S+)\s+<(.*?)>`\s+(.*)/) {
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my ($subcommand, $target, $desc) = ($1, $2, $3);
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# Check that entries are in alphabetical order
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if ($subcommand lt $previous_subcommand) {
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warn "$ME: $rst:$.: '$previous_subcommand' and '$subcommand' are out of order\n";
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++$Errs;
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}
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$previous_subcommand = $subcommand;
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# Mark this subcommand as documented.
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$subcommand_href->{$subcommand}{_desc} = $desc;
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# Check for invalid links. These will be one of two forms:
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# <markdown/foo.1> -> markdown/foo.1.md
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# <foo> -> foo.rst
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if ($target =~ m!^markdown/!) {
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if (! -e "$Docs_Path/$target.md") {
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warn "$ME: $rst:$.: '$subcommand' links to nonexistent $target\n";
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++$Errs;
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}
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}
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else {
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if (! -e "$Docs_Path/$target.rst") {
|
|
warn "$ME: $rst:$.: '$subcommand' links to nonexistent $target.rst\n";
|
|
}
|
|
}
|
|
}
|
|
}
|
|
close $fh;
|
|
}
|
|
|
|
# Special case: 'image trust set/show' are documented in image-trust.1
|
|
$rst{image}{trust}{$_} = { _desc => 'ok' } for (qw(set show));
|
|
|
|
return \%rst;
|
|
}
|
|
|
|
# END data gathering
|
|
###############################################################################
|
|
# BEGIN sanity checking of SEE ALSO links
|
|
|
|
##########################
|
|
# _check_seealso_links # Check formatting and link validity.
|
|
##########################
|
|
sub _check_seealso_links {
|
|
my $path = shift;
|
|
my $line = shift;
|
|
|
|
return if ! $line;
|
|
|
|
# Line must be a comma-separated list of man page references, e.g.
|
|
# **foo(1)**, **[podman-bar(1)](podman-bar.1.md)**, **[xxx(8)](http...)**
|
|
TOKEN:
|
|
for my $token (split /,\s+/, $line) {
|
|
# Elements must be separated by comma and space. (We don't do further
|
|
# checks here, so it's possible for the dev to add the space and then
|
|
# have us fail on the next iteration. I choose not to address that.)
|
|
if ($token =~ /,/) {
|
|
warn "$ME: $path: please add space after comma: '$token'\n";
|
|
++$Errs;
|
|
next TOKEN;
|
|
}
|
|
|
|
# Each token must be of the form '**something**'
|
|
if ($token !~ s/^\*\*(.*)\*\*$/$1/) {
|
|
if ($token =~ /\*\*/) {
|
|
warn "$ME: $path: '$token' has asterisks in the wrong place\n";
|
|
}
|
|
else {
|
|
warn "$ME: $path: '$token' should be bracketed by '**'\n";
|
|
}
|
|
++$Errs;
|
|
next TOKEN;
|
|
}
|
|
|
|
# Is it a markdown link?
|
|
if ($token =~ /^\[(\S+)\]\((\S+)\)$/) {
|
|
my ($name, $link) = ($1, $2);
|
|
if ($name =~ /^(.*)\((\d)\)$/) {
|
|
my ($base, $section) = ($1, $2);
|
|
if (-e "$Markdown_Path/$base.$section.md" || -e "$Markdown_Path/links/$base.$section") {
|
|
if ($link ne "$base.$section.md") {
|
|
warn "$ME: $path: inconsistent link $name -> $link, expected $base.$section.md\n";
|
|
++$Errs;
|
|
}
|
|
}
|
|
else {
|
|
if (! _is_valid_external_link($base, $section, $link)) {
|
|
warn "$ME: $path: invalid link $name -> $link\n";
|
|
++$Errs;
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
warn "$ME: $path: could not parse '$name' as 'manpage(N)'\n";
|
|
++$Errs;
|
|
}
|
|
}
|
|
|
|
# Not a markdown link; it must be a plain man reference, e.g. 'foo(5)'
|
|
elsif ($token =~ m!^(\S+)\((\d+)\)$!) {
|
|
my ($base, $section) = ($1, $2);
|
|
|
|
# Unadorned 'podman-foo(1)' must be a link.
|
|
if (-e "$Markdown_Path/$base.$section.md" || -e "$Markdown_Path/links/$base.$section") {
|
|
warn "$ME: $path: '$token' should be '[$token]($base.$section.md)'\n";
|
|
++$Errs;
|
|
}
|
|
|
|
# Link to man page foo(5) but without a link. This is not an error
|
|
# but Ed may sometimes want to see those on a manual test run.
|
|
warn "$ME: $path: plain '$token' would be so much nicer as a link\n"
|
|
if $verbose;
|
|
}
|
|
else {
|
|
warn "$ME: $path: invalid token '$token'\n";
|
|
++$Errs;
|
|
}
|
|
}
|
|
}
|
|
|
|
#############################
|
|
# _is_valid_external_link # Tries to validate links to external man pages
|
|
#############################
|
|
#
|
|
# This performs no actual fetches, so we can't actually check for 404.
|
|
# All we do is ensure that links conform to standard patterns. This is
|
|
# good for catching things like 'conmon(8)' pointing to a .5 URL, or
|
|
# linking to .md instead of .html.
|
|
#
|
|
# FIXME: we could actually rewrite this so as to offer hints on what to fix.
|
|
# That's a lot of work, and a lot of convoluted code, for questionable ROI.
|
|
#
|
|
sub _is_valid_external_link {
|
|
my ($base, $section, $link) = @_;
|
|
|
|
return 1 if $link =~ m!^https://github\.com/\S+/blob/(main|master)(/.*)?/\Q$base\E\.$section\.md!;
|
|
|
|
return 1 if $link =~ m!^https://.*unix\.com/man-page/(linux|redhat)/$section/$base$!;
|
|
return 1 if $link eq "https://man7\.org/linux/man-pages/man$section/$base\.$section\.html";
|
|
|
|
if ($base =~ /systemd/) {
|
|
return 1 if $link eq "https://www.freedesktop.org/software/systemd/man/$base.html";
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
|
|
|
|
# END sanity checking of SEE ALSO links
|
|
###############################################################################
|
|
|
|
1;
|